Substances that are recognized by the immune system and induce an immune reaction.
Differentiation antigens residing on mammalian leukocytes. CD stands for cluster of differentiation, which refers to groups of monoclonal antibodies that show similar reactivity with certain subpopulations of antigens of a particular lineage or differentiation stage. The subpopulations of antigens are also known by the same CD designation.
Differentiation antigens found on thymocytes and on cytotoxic and suppressor T-lymphocytes. CD8 antigens are members of the immunoglobulin supergene family and are associative recognition elements in MHC (Major Histocompatibility Complex) Class I-restricted interactions.
Proteins, glycoprotein, or lipoprotein moieties on surfaces of tumor cells that are usually identified by monoclonal antibodies. Many of these are of either embryonic or viral origin.
Complex of at least five membrane-bound polypeptides in mature T-lymphocytes that are non-covalently associated with one another and with the T-cell receptor (RECEPTORS, ANTIGEN, T-CELL). The CD3 complex includes the gamma, delta, epsilon, zeta, and eta chains (subunits). When antigen binds to the T-cell receptor, the CD3 complex transduces the activating signals to the cytoplasm of the T-cell. The CD3 gamma and delta chains (subunits) are separate from and not related to the gamma/delta chains of the T-cell receptor (RECEPTORS, ANTIGEN, T-CELL, GAMMA-DELTA).
Antigens on surfaces of cells, including infectious or foreign cells or viruses. They are usually protein-containing groups on cell membranes or walls and may be isolated.
Substances elaborated by bacteria that have antigenic activity.
A bifunctional enzyme that catalyzes the synthesis and HYDROLYSIS of CYCLIC ADP-RIBOSE (cADPR) from NAD+ to ADP-RIBOSE. It is a cell surface molecule which is predominantly expressed on LYMPHOID CELLS and MYELOID CELLS.
Glycoproteins found on immature hematopoietic cells and endothelial cells. They are the only molecules to date whose expression within the blood system is restricted to a small number of progenitor cells in the bone marrow.
Differentiation antigens expressed on B-lymphocytes and B-cell precursors. They are involved in regulation of B-cell proliferation.
A member of the tumor necrosis factor receptor superfamily with specificity for CD40 LIGAND. It is found on mature B-LYMPHOCYTES and some EPITHELIAL CELLS, lymphoid DENDRITIC CELLS. Evidence suggests that CD40-dependent activation of B-cells is important for generation of memory B-cells within the germinal centers. Mutations of the gene for CD40 antigen result in HYPER-IGM IMMUNODEFICIENCY SYNDROME, TYPE 3. Signaling of the receptor occurs through its association with TNF RECEPTOR-ASSOCIATED FACTORS.
A membrane glycoprotein and differentiation antigen expressed on the surface of T-cells that binds to CD40 ANTIGENS on B-LYMPHOCYTES and induces their proliferation. Mutation of the gene for CD40 ligand is a cause of HYPER-IGM IMMUNODEFICIENCY SYNDROME, TYPE 1.
Unglycosylated phosphoproteins expressed only on B-cells. They are regulators of transmembrane Ca2+ conductance and thought to play a role in B-cell activation and proliferation.
Substances elaborated by viruses that have antigenic activity.
Costimulatory T-LYMPHOCYTE receptors that have specificity for CD80 ANTIGEN and CD86 ANTIGEN. Activation of this receptor results in increased T-cell proliferation, cytokine production and promotion of T-cell survival.
Acidic sulfated integral membrane glycoproteins expressed in several alternatively spliced and variable glycosylated forms on a wide variety of cell types including mature T-cells, B-cells, medullary thymocytes, granulocytes, macrophages, erythrocytes, and fibroblasts. CD44 antigens are the principle cell surface receptors for hyaluronate and this interaction mediates binding of lymphocytes to high endothelial venules. (From Abbas et al., Cellular and Molecular Immunology, 2d ed, p156)
Differentiation antigens expressed on pluripotential hematopoietic cells, most human thymocytes, and a major subset of peripheral blood T-lymphocytes. They have been implicated in integrin-mediated cellular adhesion and as signalling receptors on T-cells.
Glycolipid-anchored membrane glycoproteins expressed on cells of the myelomonocyte lineage including monocytes, macrophages, and some granulocytes. They function as receptors for the complex of lipopolysaccharide (LPS) and LPS-binding protein.
Glycoprotein members of the immunoglobulin superfamily which participate in T-cell adhesion and activation. They are expressed on most peripheral T-lymphocytes, natural killer cells, and thymocytes, and function as co-receptors or accessory molecules in the T-cell receptor complex.
Ratio of T-LYMPHOCYTES that express the CD4 ANTIGEN to those that express the CD8 ANTIGEN. This value is commonly assessed in the diagnosis and staging of diseases affecting the IMMUNE SYSTEM including HIV INFECTIONS.
Glycoproteins expressed on all mature T-cells, thymocytes, and a subset of mature B-cells. Antibodies specific for CD5 can enhance T-cell receptor-mediated T-cell activation. The B-cell-specific molecule CD72 is a natural ligand for CD5. (From Abbas et al., Cellular and Molecular Immunology, 2d ed, p156)
Antigens expressed primarily on the membranes of living cells during sequential stages of maturation and differentiation. As immunologic markers they have high organ and tissue specificity and are useful as probes in studies of normal cell development as well as neoplastic transformation.
A critical subpopulation of T-lymphocytes involved in the induction of most immunological functions. The HIV virus has selective tropism for the T4 cell which expresses the CD4 phenotypic marker, a receptor for HIV. In fact, the key element in the profound immunosuppression seen in HIV infection is the depletion of this subset of T-lymphocytes.
Glycoproteins expressed on cortical thymocytes and on some dendritic cells and B-cells. Their structure is similar to that of MHC Class I and their function has been postulated as similar also. CD1 antigens are highly specific markers for human LANGERHANS CELLS.
Antibodies produced by a single clone of cells.
The 140 kDa isoform of NCAM (neural cell adhesion molecule) containing a transmembrane domain and short cytoplasmic tail. It is expressed by all lymphocytes mediating non-MHC restricted cytotoxicity and is present on some neural tissues and tumors.
Antigens expressed on the cell membrane of T-lymphocytes during differentiation, activation, and normal and neoplastic transformation. Their phenotypic characterization is important in differential diagnosis and studies of thymic ontogeny and T-cell function.
A membrane-bound or cytosolic enzyme that catalyzes the synthesis of CYCLIC ADP-RIBOSE (cADPR) from nicotinamide adenine dinucleotide (NAD). This enzyme generally catalyzes the hydrolysis of cADPR to ADP-RIBOSE, as well, and sometimes the synthesis of cyclic ADP-ribose 2' phosphate (2'-P-cADPR) from NADP.
Surface antigens expressed on myeloid cells of the granulocyte-monocyte-histiocyte series during differentiation. Analysis of their reactivity in normal and malignant myelomonocytic cells is useful in identifying and classifying human leukemias and lymphomas.
A costimulatory ligand expressed by ANTIGEN-PRESENTING CELLS that binds to CTLA-4 ANTIGEN with high specificity and to CD28 ANTIGEN with low specificity. The interaction of CD80 with CD28 ANTIGEN provides a costimulatory signal to T-LYMPHOCYTES, while its interaction with CTLA-4 ANTIGEN may play a role in inducing PERIPHERAL TOLERANCE.
Tetraspanin proteins found at high levels in cells of the lymphoid-myeloid lineage. CD53 antigens may be involved regulating the differentiation of T-LYMPHOCYTES and the activation of B-LYMPHOCYTES.
A cell adhesion protein that was originally identified as a heat stable antigen in mice. It is involved in METASTASIS and is highly expressed in many NEOPLASMS.
Zinc-binding metalloproteases that are members of the type II integral membrane metalloproteases. They are expressed by GRANULOCYTES; MONOCYTES; and their precursors as well as by various non-hematopoietic cells. They release an N-terminal amino acid from a peptide, amide or arylamide.
Any part or derivative of any protozoan that elicits immunity; malaria (Plasmodium) and trypanosome antigens are presently the most frequently encountered.
Lymphocytes responsible for cell-mediated immunity. Two types have been identified - cytotoxic (T-LYMPHOCYTES, CYTOTOXIC) and helper T-lymphocytes (T-LYMPHOCYTES, HELPER-INDUCER). They are formed when lymphocytes circulate through the THYMUS GLAND and differentiate to thymocytes. When exposed to an antigen, they divide rapidly and produce large numbers of new T cells sensitized to that antigen.
A costimulatory ligand expressed by ANTIGEN-PRESENTING CELLS that binds to CD28 ANTIGEN with high specificity and to CTLA-4 ANTIGEN with low specificity. The interaction of CD86 with CD28 ANTIGEN provides a stimulatory signal to T-LYMPHOCYTES, while its interaction with CTLA-4 ANTIGEN may play a role in inducing PERIPHERAL TOLERANCE.
Technique using an instrument system for making, processing, and displaying one or more measurements on individual cells obtained from a cell suspension. Cells are usually stained with one or more fluorescent dyes specific to cell components of interest, e.g., DNA, and fluorescence of each cell is measured as it rapidly transverses the excitation beam (laser or mercury arc lamp). Fluorescence provides a quantitative measure of various biochemical and biophysical properties of the cell, as well as a basis for cell sorting. Other measurable optical parameters include light absorption and light scattering, the latter being applicable to the measurement of cell size, shape, density, granularity, and stain uptake.
Lymphoid cells concerned with humoral immunity. They are short-lived cells resembling bursa-derived lymphocytes of birds in their production of immunoglobulin upon appropriate stimulation.
Polyomavirus antigens which cause infection and cellular transformation. The large T antigen is necessary for the initiation of viral DNA synthesis, repression of transcription of the early region and is responsible in conjunction with the middle T antigen for the transformation of primary cells. Small T antigen is necessary for the completion of the productive infection cycle.
A tumor necrosis factor receptor subtype found in a variety of tissues and on activated LYMPHOCYTES. It has specificity for FAS LIGAND and plays a role in regulation of peripheral immune responses and APOPTOSIS. Multiple isoforms of the protein exist due to multiple ALTERNATIVE SPLICING. The activated receptor signals via a conserved death domain that associates with specific TNF RECEPTOR-ASSOCIATED FACTORS in the CYTOPLASM.
Antigens determined by leukocyte loci found on chromosome 6, the major histocompatibility loci in humans. They are polypeptides or glycoproteins found on most nucleated cells and platelets, determine tissue types for transplantation, and are associated with certain diseases.
Membrane antigens associated with maturation stages of B-lymphocytes, often expressed in tumors of B-cell origin.
High-molecular weight glycoproteins uniquely expressed on the surface of LEUKOCYTES and their hemopoietic progenitors. They contain a cytoplasmic protein tyrosine phosphatase activity which plays a role in intracellular signaling from the CELL SURFACE RECEPTORS. The CD45 antigens occur as multiple isoforms that result from alternative mRNA splicing and differential usage of three exons.
Process of classifying cells of the immune system based on structural and functional differences. The process is commonly used to analyze and sort T-lymphocytes into subsets based on CD antigens by the technique of flow cytometry.
Substances of fungal origin that have antigenic activity.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
The major group of transplantation antigens in the mouse.
A 67-kDa sialic acid binding lectin that is specific for MYELOID CELLS and MONOCYTE-MACROPHAGE PRECURSOR CELLS. This protein is the smallest siglec subtype and contains a single immunoglobulin C2-set domain. It may play a role in intracellular signaling via its interaction with SHP-1 PROTEIN-TYROSINE PHOSPHATASE and SHP-2 PROTEIN-TYROSINE PHOSPHATASE.
Any part or derivative of a helminth that elicits an immune reaction. The most commonly seen helminth antigens are those of the schistosomes.
Molecules on the surface of T-lymphocytes that recognize and combine with antigens. The receptors are non-covalently associated with a complex of several polypeptides collectively called CD3 antigens (ANTIGENS, CD3). Recognition of foreign antigen and the major histocompatibility complex is accomplished by a single heterodimeric antigen-receptor structure, composed of either alpha-beta (RECEPTORS, ANTIGEN, T-CELL, ALPHA-BETA) or gamma-delta (RECEPTORS, ANTIGEN, T-CELL, GAMMA-DELTA) chains.
Cell-surface glycoprotein beta-chains that are non-covalently linked to specific alpha-chains of the CD11 family of leukocyte-adhesion molecules (RECEPTORS, LEUKOCYTE-ADHESION). A defect in the gene encoding CD18 causes LEUKOCYTE-ADHESION DEFICIENCY SYNDROME.
Morphologic alteration of small B LYMPHOCYTES or T LYMPHOCYTES in culture into large blast-like cells able to synthesize DNA and RNA and to divide mitotically. It is induced by INTERLEUKINS; MITOGENS such as PHYTOHEMAGGLUTININS, and by specific ANTIGENS. It may also occur in vivo as in GRAFT REJECTION.
A member of the tumor necrosis factor receptor superfamily that may play a role in the regulation of NF-KAPPA B and APOPTOSIS. They are found on activated T-LYMPHOCYTES; B-LYMPHOCYTES; NEUTROPHILS; EOSINOPHILS; MAST CELLS and NK CELLS. Overexpression of CD30 antigen in hematopoietic malignancies make the antigen clinically useful as a biological tumor marker. Signaling of the receptor occurs through its association with TNF RECEPTOR-ASSOCIATED FACTORS.
Glycoproteins found on the membrane or surface of cells.
A critical subpopulation of regulatory T-lymphocytes involved in MHC Class I-restricted interactions. They include both cytotoxic T-lymphocytes (T-LYMPHOCYTES, CYTOTOXIC) and CD8+ suppressor T-lymphocytes.
Sites on an antigen that interact with specific antibodies.
A subtype of tetraspanin proteins that play a role in cell adhesion, cell motility, and tumor metastasis. CD9 antigens take part in the process of platelet activation and aggregation, the formation of paranodal junctions in neuronal tissue, and the fusion of sperm with egg.
A glycoprotein that is secreted into the luminal surface of the epithelia in the gastrointestinal tract. It is found in the feces and pancreaticobiliary secretions and is used to monitor the response to colon cancer treatment.
A subclass of HLA-D antigens that consist of alpha and beta chains. The inheritance of HLA-DR antigens differs from that of the HLA-DQ ANTIGENS and HLA-DP ANTIGENS.
A trisaccharide antigen expressed on glycolipids and many cell-surface glycoproteins. In the blood the antigen is found on the surface of NEUTROPHILS; EOSINOPHILS; and MONOCYTES. In addition, CD15 antigen is a stage-specific embryonic antigen.
Those proteins recognized by antibodies from serum of animals bearing tumors induced by viruses; these proteins are presumably coded for by the nucleic acids of the same viruses that caused the neoplastic transformation.
Established cell cultures that have the potential to propagate indefinitely.
A sialic acid-rich protein and an integral cell membrane mucin. It plays an important role in activation of T-LYMPHOCYTES.
Leukocyte differentiation antigens and major platelet membrane glycoproteins present on MONOCYTES; ENDOTHELIAL CELLS; PLATELETS; and mammary EPITHELIAL CELLS. They play major roles in CELL ADHESION; SIGNAL TRANSDUCTION; and regulation of angiogenesis. CD36 is a receptor for THROMBOSPONDINS and can act as a scavenger receptor that recognizes and transports oxidized LIPOPROTEINS and FATTY ACIDS.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
A group of three different alpha chains (CD11a, CD11b, CD11c) that are associated with an invariant CD18 beta chain (ANTIGENS, CD18). The three resulting leukocyte-adhesion molecules (RECEPTORS, LEUKOCYTE ADHESION) are LYMPHOCYTE FUNCTION-ASSOCIATED ANTIGEN-1; MACROPHAGE-1 ANTIGEN; and ANTIGEN, P150,95.
Large, transmembrane, non-covalently linked glycoproteins (alpha and beta). Both chains can be polymorphic although there is more structural variation in the beta chains. The class II antigens in humans are called HLA-D ANTIGENS and are coded by a gene on chromosome 6. In mice, two genes named IA and IE on chromosome 17 code for the H-2 antigens. The antigens are found on B-lymphocytes, macrophages, epidermal cells, and sperm and are thought to mediate the competence of and cellular cooperation in the immune response. The term IA antigens used to refer only to the proteins encoded by the IA genes in the mouse, but is now used as a generic term for any class II histocompatibility antigen.
A group of antigens that includes both the major and minor histocompatibility antigens. The former are genetically determined by the major histocompatibility complex. They determine tissue type for transplantation and cause allograft rejections. The latter are systems of allelic alloantigens that can cause weak transplant rejection.
Small glycoproteins found on both hematopoietic and non-hematopoietic cells. CD59 restricts the cytolytic activity of homologous complement by binding to C8 and C9 and blocking the assembly of the membrane attack complex. (From Barclay et al., The Leukocyte Antigen FactsBook, 1993, p234)
IMMUNOGLOBULINS on the surface of B-LYMPHOCYTES. Their MESSENGER RNA contains an EXON with a membrane spanning sequence, producing immunoglobulins in the form of type I transmembrane proteins as opposed to secreted immunoglobulins (ANTIBODIES) which do not contain the membrane spanning segment.
Nuclear antigen with a role in DNA synthesis, DNA repair, and cell cycle progression. PCNA is required for the coordinated synthesis of both leading and lagging strands at the replication fork during DNA replication. PCNA expression correlates with the proliferation activity of several malignant and non-malignant cell types.
Oligosaccharide antigenic determinants found principally on NK cells and T-cells. Their role in the immune response is poorly understood.
A transmembrane protein belonging to the tumor necrosis factor superfamily that specifically binds to CD27 ANTIGEN. It is found on activated T-LYMPHOCYTES; B-LYMPHOCYTES; and DENDRITIC CELLS where it plays a role in stimulating the proliferation of CD4-POSITIVE T-LYMPHOCYTES and CD8-POSITIVE T-LYMPHOCYTES.
A ubiquitously expressed complement receptor that binds COMPLEMENT C3B and COMPLEMENT C4B and serves as a cofactor for their inactivation. CD46 also interacts with a wide variety of pathogens and mediates immune response.
A class of animal lectins that bind to carbohydrate in a calcium-dependent manner. They share a common carbohydrate-binding domain that is structurally distinct from other classes of lectins.
Glycoproteins with a wide distribution on hematopoietic and non-hematopoietic cells and strongly expressed on macrophages. CD58 mediates cell adhesion by binding to CD2; (ANTIGENS, CD2); and this enhances antigen-specific T-cell activation.
55-kDa antigens found on HELPER-INDUCER T-LYMPHOCYTES and on a variety of other immune cell types. CD4 antigens are members of the immunoglobulin supergene family and are implicated as associative recognition elements in MAJOR HISTOCOMPATIBILITY COMPLEX class II-restricted immune responses. On T-lymphocytes they define the helper/inducer subset. CD4 antigens also serve as INTERLEUKIN-15 receptors and bind to the HIV receptors, binding directly to the HIV ENVELOPE PROTEIN GP120.
A ubiquitously expressed membrane glycoprotein. It interacts with a variety of INTEGRINS and mediates responses to EXTRACELLULAR MATRIX PROTEINS.
A CD antigen that contains a conserved I domain which is involved in ligand binding. When combined with CD18 the two subunits form MACROPHAGE-1 ANTIGEN.
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
A glycoprotein that is a kallikrein-like serine proteinase and an esterase, produced by epithelial cells of both normal and malignant prostate tissue. It is an important marker for the diagnosis of prostate cancer.
An integrin alpha subunit of approximately 150-kDa molecular weight. It is expressed at high levels on monocytes and combines with CD18 ANTIGEN to form the cell surface receptor INTEGRIN ALPHAXBETA2. The subunit contains a conserved I-domain which is characteristic of several of alpha integrins.
The lipopolysaccharide-protein somatic antigens, usually from gram-negative bacteria, important in the serological classification of enteric bacilli. The O-specific chains determine the specificity of the O antigens of a given serotype. O antigens are the immunodominant part of the lipopolysaccharide molecule in the intact bacterial cell. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
A specific HLA-A surface antigen subtype. Members of this subtype contain alpha chains that are encoded by the HLA-A*02 allele family.
An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed.
Histochemical localization of immunoreactive substances using labeled antibodies as reagents.
Progenitor cells from which all blood cells derive.
The number of CD4-POSITIVE T-LYMPHOCYTES per unit volume of BLOOD. Determination requires the use of a fluorescence-activated flow cytometer.
The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B.
Carbohydrate antigens expressed by malignant tissue. They are useful as tumor markers and are measured in the serum by means of a radioimmunoassay employing monoclonal antibodies.
GPI-linked membrane proteins broadly distributed among hematopoietic and non-hematopoietic cells. CD55 prevents the assembly of C3 CONVERTASE or accelerates the disassembly of preformed convertase, thus blocking the formation of the membrane attack complex.
Cell adhesion molecules present on virtually all monocytes, platelets, and granulocytes. CD31 is highly expressed on endothelial cells and concentrated at the junctions between them.
Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely.
Membrane glycoproteins consisting of an alpha subunit and a BETA 2-MICROGLOBULIN beta subunit. In humans, highly polymorphic genes on CHROMOSOME 6 encode the alpha subunits of class I antigens and play an important role in determining the serological specificity of the surface antigen. Class I antigens are found on most nucleated cells and are generally detected by their reactivity with alloantisera. These antigens are recognized during GRAFT REJECTION and restrict cell-mediated lysis of virus-infected cells.
Tetraspanin proteins that are involved in a variety of cellular functions including BASEMENT MEMBRANE assembly, and in the formation of a molecular complexes on the surface of LYMPHOCYTES.
Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.
A member of the tumor necrosis factor receptor superfamily that is specific for 4-1BB LIGAND. It is found in a variety of immune cell types including activated T-LYMPHOCYTES; NATURAL KILLER CELLS; and DENDRITIC CELLS. Activation of the receptor on T-LYMPHOCYTES plays a role in their expansion, production of cytokines and survival. Signaling by the activated receptor occurs through its association with TNF RECEPTOR-ASSOCIATED FACTORS.
Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs.
Proteins prepared by recombinant DNA technology.
White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS.
Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles.
Polymorphic class I human histocompatibility (HLA) surface antigens present on almost all nucleated cells. At least 20 antigens have been identified which are encoded by the A locus of multiple alleles on chromosome 6. They serve as targets for T-cell cytolytic responses and are involved with acceptance or rejection of tissue/organ grafts.
Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen.
Specialized cells of the hematopoietic system that have branch-like extensions. They are found throughout the lymphatic system, and in non-lymphoid tissues such as SKIN and the epithelia of the intestinal, respiratory, and reproductive tracts. They trap and process ANTIGENS, and present them to T-CELLS, thereby stimulating CELL-MEDIATED IMMUNITY. They are different from the non-hematopoietic FOLLICULAR DENDRITIC CELLS, which have a similar morphology and immune system function, but with respect to humoral immunity (ANTIBODY PRODUCTION).
Receptors present on activated T-LYMPHOCYTES and B-LYMPHOCYTES that are specific for INTERLEUKIN-2 and play an important role in LYMPHOCYTE ACTIVATION. They are heterotrimeric proteins consisting of the INTERLEUKIN-2 RECEPTOR ALPHA SUBUNIT, the INTERLEUKIN-2 RECEPTOR BETA SUBUNIT, and the INTERLEUKIN RECEPTOR COMMON GAMMA-CHAIN.
Sets of cell surface antigens located on BLOOD CELLS. They are usually membrane GLYCOPROTEINS or GLYCOLIPIDS that are antigenically distinguished by their carbohydrate moieties.
Those hepatitis B antigens found on the surface of the Dane particle and on the 20 nm spherical and tubular particles. Several subspecificities of the surface antigen are known. These were formerly called the Australia antigen.
Ubiquitously-expressed tetraspanin proteins that are found in late ENDOSOMES and LYSOSOMES and have been implicated in intracellular transport of proteins.
The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES.
The property of antibodies which enables them to react with some ANTIGENIC DETERMINANTS and not with others. Specificity is dependent on chemical composition, physical forces, and molecular structure at the binding site.
Tetraspanin proteins found associated with LAMININ-binding INTEGRINS. The CD151 antigens may play a role in the regulation of CELL MOTILITY.
A component of the B-cell antigen receptor that is involved in B-cell antigen receptor heavy chain transport to the PLASMA MEMBRANE. It is expressed almost exclusively in B-LYMPHOCYTES and serves as a useful marker for B-cell NEOPLASMS.
An encapsulated lymphatic organ through which venous blood filters.
Test for tissue antigen using either a direct method, by conjugation of antibody with fluorescent dye (FLUORESCENT ANTIBODY TECHNIQUE, DIRECT) or an indirect method, by formation of antigen-antibody complex which is then labeled with fluorescein-conjugated anti-immunoglobulin antibody (FLUORESCENT ANTIBODY TECHNIQUE, INDIRECT). The tissue is then examined by fluorescence microscopy.
Human immune-response or Class II antigens found mainly, but not exclusively, on B-lymphocytes and produced from genes of the HLA-D locus. They are extremely polymorphic families of glycopeptides, each consisting of two chains, alpha and beta. This group of antigens includes the -DR, -DQ and -DP designations, of which HLA-DR is most studied; some of these glycoproteins are associated with certain diseases, possibly of immune etiology.
A membrane-bound tumor necrosis family member found primarily on activated T-LYMPHOCYTES that binds specifically to CD30 ANTIGEN. It may play a role in INFLAMMATION and immune regulation.
The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.
A class of enzymes involved in the hydrolysis of the N-glycosidic bond of nitrogen-linked sugars.
A form of undifferentiated malignant LYMPHOMA usually found in central Africa, but also reported in other parts of the world. It is commonly manifested as a large osteolytic lesion in the jaw or as an abdominal mass. B-cell antigens are expressed on the immature cells that make up the tumor in virtually all cases of Burkitt lymphoma. The Epstein-Barr virus (HERPESVIRUS 4, HUMAN) has been isolated from Burkitt lymphoma cases in Africa and it is implicated as the causative agent in these cases; however, most non-African cases are EBV-negative.
Molecules on the surface of B- and T-lymphocytes that recognize and combine with specific antigens.
Deliberate stimulation of the host's immune response. ACTIVE IMMUNIZATION involves administration of ANTIGENS or IMMUNOLOGIC ADJUVANTS. PASSIVE IMMUNIZATION involves administration of IMMUNE SERA or LYMPHOCYTES or their extracts (e.g., transfer factor, immune RNA) or transplantation of immunocompetent cell producing tissue (thymus or bone marrow).
The production of ANTIBODIES by proliferating and differentiated B-LYMPHOCYTES under stimulation by ANTIGENS.
An alpha-integrin subunit found on lymphocytes, granulocytes, macrophages and monocytes. It combines with the integrin beta2 subunit (CD18 ANTIGEN) to form LYMPHOCYTE FUNCTION-ASSOCIATED ANTIGEN-1.
RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.
Antigens of the virion of the HEPATITIS B VIRUS or the Dane particle, its surface (HEPATITIS B SURFACE ANTIGENS), core (HEPATITIS B CORE ANTIGENS), and other associated antigens, including the HEPATITIS B E ANTIGENS.
The soft tissue filling the cavities of bones. Bone marrow exists in two types, yellow and red. Yellow marrow is found in the large cavities of large bones and consists mostly of fat cells and a few primitive blood cells. Red marrow is a hematopoietic tissue and is the site of production of erythrocytes and granular leukocytes. Bone marrow is made up of a framework of connective tissue containing branching fibers with the frame being filled with marrow cells.
The processes triggered by interactions of ANTIBODIES with their ANTIGENS.
Serum that contains antibodies. It is obtained from an animal that has been immunized either by ANTIGEN injection or infection with microorganisms containing the antigen.
The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.)
Mice homozygous for the mutant autosomal recessive gene "scid" which is located on the centromeric end of chromosome 16. These mice lack mature, functional lymphocytes and are thus highly susceptible to lethal opportunistic infections if not chronically treated with antibiotics. The lack of B- and T-cell immunity resembles severe combined immunodeficiency (SCID) syndrome in human infants. SCID mice are useful as animal models since they are receptive to implantation of a human immune system producing SCID-human (SCID-hu) hematochimeric mice.
Immunized T-lymphocytes which can directly destroy appropriate target cells. These cytotoxic lymphocytes may be generated in vitro in mixed lymphocyte cultures (MLC), in vivo during a graft-versus-host (GVH) reaction, or after immunization with an allograft, tumor cell or virally transformed or chemically modified target cell. The lytic phenomenon is sometimes referred to as cell-mediated lympholysis (CML). These CD8-positive cells are distinct from NATURAL KILLER CELLS and NATURAL KILLER T-CELLS. There are two effector phenotypes: TC1 and TC2.
Recombinant proteins produced by the GENETIC TRANSLATION of fused genes formed by the combination of NUCLEIC ACID REGULATORY SEQUENCES of one or more genes with the protein coding sequences of one or more genes.
The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION.
A heterogeneous group of immunocompetent cells that mediate the cellular immune response by processing and presenting antigens to the T-cells. Traditional antigen-presenting cells include MACROPHAGES; DENDRITIC CELLS; LANGERHANS CELLS; and B-LYMPHOCYTES. FOLLICULAR DENDRITIC CELLS are not traditional antigen-presenting cells, but because they hold antigen on their cell surface in the form of IMMUNE COMPLEXES for B-cell recognition they are considered so by some authors.
The type species of LYMPHOCRYPTOVIRUS, subfamily GAMMAHERPESVIRINAE, infecting B-cells in humans. It is thought to be the causative agent of INFECTIOUS MONONUCLEOSIS and is strongly associated with oral hairy leukoplakia (LEUKOPLAKIA, HAIRY;), BURKITT LYMPHOMA; and other malignancies.
T-cell receptors composed of CD3-associated alpha and beta polypeptide chains and expressed primarily in CD4+ or CD8+ T-cells. Unlike immunoglobulins, the alpha-beta T-cell receptors recognize antigens only when presented in association with major histocompatibility (MHC) molecules.
Immunoglobulins produced in a response to BACTERIAL ANTIGENS.
Class I human histocompatibility (HLA) surface antigens encoded by more than 30 detectable alleles on locus B of the HLA complex, the most polymorphic of all the HLA specificities. Several of these antigens (e.g., HLA-B27, -B7, -B8) are strongly associated with predisposition to rheumatoid and other autoimmune disorders. Like other class I HLA determinants, they are involved in the cellular immune reactivity of cytolytic T lymphocytes.
The altered state of immunologic responsiveness resulting from initial contact with antigen, which enables the individual to produce antibodies more rapidly and in greater quantity in response to secondary antigenic stimulus.
Cells contained in the bone marrow including fat cells (see ADIPOCYTES); STROMAL CELLS; MEGAKARYOCYTES; and the immediate precursors of most blood cells.
The phenomenon of target cell destruction by immunologically active effector cells. It may be brought about directly by sensitized T-lymphocytes or by lymphoid or myeloid "killer" cells, or it may be mediated by cytotoxic antibody, cytotoxic factor released by lymphoid cells, or complement.
Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN.
A melanosome-specific protein that plays a role in the expression, stability, trafficking, and processing of GP100 MELANOMA ANTIGEN, which is critical to the formation of Stage II MELANOSOMES. The protein is used as an antigen marker for MELANOMA cells.
A widely distributed cell surface transmembrane glycoprotein that stimulates the synthesis of MATRIX METALLOPROTEINASES. It is found at high levels on the surface of malignant NEOPLASMS and may play a role as a mediator of malignant cell behavior.
A general term for various neoplastic diseases of the lymphoid tissue.
An albumin obtained from the white of eggs. It is a member of the serpin superfamily.
Antigens associated with specific proteins of the human adult T-cell immunodeficiency virus (HIV); also called HTLV-III-associated and lymphadenopathy-associated virus (LAV) antigens.
An inhibitory T CELL receptor that is closely related to CD28 ANTIGEN. It has specificity for CD80 ANTIGEN and CD86 ANTIGEN and acts as a negative regulator of peripheral T cell function. CTLA-4 antigen is believed to play role in inducing PERIPHERAL TOLERANCE.
A promyelocytic cell line derived from a patient with ACUTE PROMYELOCYTIC LEUKEMIA. HL-60 cells lack specific markers for LYMPHOID CELLS but express surface receptors for FC FRAGMENTS and COMPLEMENT SYSTEM PROTEINS. They also exhibit phagocytic activity and responsiveness to chemotactic stimuli. (From Hay et al., American Type Culture Collection, 7th ed, pp127-8)
A widely expressed transmembrane glycoprotein that functions as a METASTASIS suppressor protein. It is underexpressed in a variety of human NEOPLASMS.
Immunologic techniques based on the use of: (1) enzyme-antibody conjugates; (2) enzyme-antigen conjugates; (3) antienzyme antibody followed by its homologous enzyme; or (4) enzyme-antienzyme complexes. These are used histologically for visualizing or labeling tissue specimens.
Immunoglobulin molecules having a specific amino acid sequence by virtue of which they interact only with the ANTIGEN (or a very similar shape) that induced their synthesis in cells of the lymphoid series (especially PLASMA CELLS).
The phenotypic manifestation of a gene or genes by the processes of GENETIC TRANSCRIPTION and GENETIC TRANSLATION.
A group of differentiation surface antigens, among the first to be discovered on thymocytes and T-lymphocytes. Originally identified in the mouse, they are also found in other species including humans, and are expressed on brain neurons and other cells.
Non-antibody proteins secreted by inflammatory leukocytes and some non-leukocytic cells, that act as intercellular mediators. They differ from classical hormones in that they are produced by a number of tissue or cell types rather than by specialized glands. They generally act locally in a paracrine or autocrine rather than endocrine manner.
The specific failure of a normally responsive individual to make an immune response to a known antigen. It results from previous contact with the antigen by an immunologically immature individual (fetus or neonate) or by an adult exposed to extreme high-dose or low-dose antigen, or by exposure to radiation, antimetabolites, antilymphocytic serum, etc.
Manifestations of the immune response which are mediated by antigen-sensitized T-lymphocytes via lymphokines or direct cytotoxicity. This takes place in the absence of circulating antibody or where antibody plays a subordinate role.
A single, unpaired primary lymphoid organ situated in the MEDIASTINUM, extending superiorly into the neck to the lower edge of the THYROID GLAND and inferiorly to the fourth costal cartilage. It is necessary for normal development of immunologic function early in life. By puberty, it begins to involute and much of the tissue is replaced by fat.
Endogenous tissue constituents that have the ability to interact with AUTOANTIBODIES and cause an immune response.
A group of genetically identical cells all descended from a single common ancestral cell by mitosis in eukaryotes or by binary fission in prokaryotes. Clone cells also include populations of recombinant DNA molecules all carrying the same inserted sequence. (From King & Stansfield, Dictionary of Genetics, 4th ed)
Nuclear antigens encoded by VIRAL GENES found in HUMAN HERPESVIRUS 4. At least six nuclear antigens have been identified.
A soluble substance elaborated by antigen- or mitogen-stimulated T-LYMPHOCYTES which induces DNA synthesis in naive lymphocytes.
A class of immunoglobulin bearing mu chains (IMMUNOGLOBULIN MU-CHAINS). IgM can fix COMPLEMENT. The name comes from its high molecular weight and originally being called a macroglobulin.
A cell line derived from cultured tumor cells.
Measurable and quantifiable biological parameters (e.g., specific enzyme concentration, specific hormone concentration, specific gene phenotype distribution in a population, presence of biological substances) which serve as indices for health- and physiology-related assessments, such as disease risk, psychiatric disorders, environmental exposure and its effects, disease diagnosis, metabolic processes, substance abuse, pregnancy, cell line development, epidemiologic studies, etc.
A sex-specific cell surface antigen produced by the sex-determining gene of the Y chromosome in mammals. It causes syngeneic grafts from males to females to be rejected and interacts with somatic elements of the embryologic undifferentiated gonad to produce testicular organogenesis.
A cell adhesion molecule of the immunoglobulin superfamily that is expressed in ENDOTHELIAL CELLS and is involved in INTERCELLULAR JUNCTIONS.
Antigens stimulating the formation of, or combining with heterophile antibodies. They are cross-reacting antigens found in phylogenetically unrelated species.
CD4-positive T cells that inhibit immunopathology or autoimmune disease in vivo. They inhibit the immune response by influencing the activity of other cell types. Regulatory T-cells include naturally occurring CD4+CD25+ cells, IL-10 secreting Tr1 cells, and Th3 cells.
Antibodies obtained from a single clone of cells grown in mice or rats.
Antigenic determinants recognized and bound by the T-cell receptor. Epitopes recognized by the T-cell receptor are often located in the inner, unexposed side of the antigen, and become accessible to the T-cell receptors after proteolytic processing of the antigen.
The major interferon produced by mitogenically or antigenically stimulated LYMPHOCYTES. It is structurally different from TYPE I INTERFERON and its major activity is immunoregulation. It has been implicated in the expression of CLASS II HISTOCOMPATIBILITY ANTIGENS in cells that do not normally produce them, leading to AUTOIMMUNE DISEASES.
A heterodimeric protein that is a cell surface antigen associated with lymphocyte activation. The initial characterization of this protein revealed one identifiable heavy chain (ANTIGENS, CD98 HEAVY CHAIN) and an indeterminate smaller light chain. It is now known that a variety of light chain subunits (ANTIGENS, CD98 LIGHT CHAINS) can dimerize with the heavy chain. Depending upon its light chain composition a diverse array of functions can be found for this protein. Functions include: type L amino acid transport, type y+L amino acid transport and regulation of cellular fusion.
The hepatitis B antigen within the core of the Dane particle, the infectious hepatitis virion.
Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
The complex formed by the binding of antigen and antibody molecules. The deposition of large antigen-antibody complexes leading to tissue damage causes IMMUNE COMPLEX DISEASES.
They are oval or bean shaped bodies (1 - 30 mm in diameter) located along the lymphatic system.
The sum of the weight of all the atoms in a molecule.
Technique involving the diffusion of antigen or antibody through a semisolid medium, usually agar or agarose gel, with the result being a precipitin reaction.
A group of the D-related HLA antigens found to differ from the DR antigens in genetic locus and therefore inheritance. These antigens are polymorphic glycoproteins comprising alpha and beta chains and are found on lymphoid and other cells, often associated with certain diseases.
Immunoglobulins produced in response to VIRAL ANTIGENS.
The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.
Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations, or by parent x offspring matings carried out with certain restrictions. All animals within an inbred strain trace back to a common ancestor in the twentieth generation.
A glycolipid, cross-species antigen that induces production of antisheep hemolysin. It is present on the tissue cells of many species but absent in humans. It is found in many infectious agents.
Elements of limited time intervals, contributing to particular results or situations.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
An inhibitory B7 antigen that has specificity for the T-CELL receptor PROGRAMMED CELL DEATH 1 PROTEIN. CD274 antigen provides negative signals that control and inhibit T-cell responses and is found at higher than normal levels on tumor cells, suggesting its potential role in TUMOR IMMUNE EVASION.
Serologic tests based on inactivation of complement by the antigen-antibody complex (stage 1). Binding of free complement can be visualized by addition of a second antigen-antibody system such as red cells and appropriate red cell antibody (hemolysin) requiring complement for its completion (stage 2). Failure of the red cells to lyse indicates that a specific antigen-antibody reaction has taken place in stage 1. If red cells lyse, free complement is present indicating no antigen-antibody reaction occurred in stage 1.
A species of POLYOMAVIRUS originally isolated from Rhesus monkey kidney tissue. It produces malignancy in human and newborn hamster kidney cell cultures.
Conjugated protein-carbohydrate compounds including mucins, mucoid, and amyloid glycoproteins.
Substances that augment, stimulate, activate, potentiate, or modulate the immune response at either the cellular or humoral level. The classical agents (Freund's adjuvant, BCG, Corynebacterium parvum, et al.) contain bacterial antigens. Some are endogenous (e.g., histamine, interferon, transfer factor, tuftsin, interleukin-1). Their mode of action is either non-specific, resulting in increased immune responsiveness to a wide variety of antigens, or antigen-specific, i.e., affecting a restricted type of immune response to a narrow group of antigens. The therapeutic efficacy of many biological response modifiers is related to their antigen-specific immunoadjuvanticity.
Antigens that exist in alternative (allelic) forms in a single species. When an isoantigen is encountered by species members who lack it, an immune response is induced. Typical isoantigens are the BLOOD GROUP ANTIGENS.
Cells artificially created by fusion of activated lymphocytes with neoplastic cells. The resulting hybrid cells are cloned and produce pure MONOCLONAL ANTIBODIES or T-cell products, identical to those produced by the immunologically competent parent cell.
A melanosome-associated protein that plays a role in the maturation of the MELANOSOME.
The genetic region which contains the loci of genes which determine the structure of the serologically defined (SD) and lymphocyte-defined (LD) TRANSPLANTATION ANTIGENS, genes which control the structure of the IMMUNE RESPONSE-ASSOCIATED ANTIGENS, HUMAN; the IMMUNE RESPONSE GENES which control the ability of an animal to respond immunologically to antigenic stimuli, and genes which determine the structure and/or level of the first four components of complement.
Bone marrow-derived lymphocytes that possess cytotoxic properties, classically directed against transformed and virus-infected cells. Unlike T CELLS; and B CELLS; NK CELLS are not antigen specific. The cytotoxicity of natural killer cells is determined by the collective signaling of an array of inhibitory and stimulatory CELL SURFACE RECEPTORS. A subset of T-LYMPHOCYTES referred to as NATURAL KILLER T CELLS shares some of the properties of this cell type.
A technique that combines protein electrophoresis and double immunodiffusion. In this procedure proteins are first separated by gel electrophoresis (usually agarose), then made visible by immunodiffusion of specific antibodies. A distinct elliptical precipitin arc results for each protein detectable by the antisera.
Form of passive immunization where previously sensitized immunologic agents (cells or serum) are transferred to non-immune recipients. When transfer of cells is used as a therapy for the treatment of neoplasms, it is called adoptive immunotherapy (IMMUNOTHERAPY, ADOPTIVE).

Resistance of CD7-deficient mice to lipopolysaccharide-induced shock syndromes. (1/145)

CD7 is an immunoglobulin superfamily molecule involved in T and natural killer (NK) cell activation and cytokine production. CD7-deficient animals develop normally but have antigen-specific defects in interferon (IFN)-gamma production and CD8(+) CTL generation. To determine the in vivo role of CD7 in systems dependent on IFN-gamma, the response of CD7-deficient mice to lipopolysaccharide (LPS)-induced shock syndromes was studied. In the high-dose LPS-induced shock model, 67% of CD7-deficient mice survived LPS injection, whereas 19% of control C57BL/6 mice survived LPS challenge (P < 0.001). CD7-deficient or C57BL/6 control mice were next injected with low-dose LPS (1 microgram plus 8 mg D-galactosamine [D-gal] per mouse) and monitored for survival. All CD7-deficient mice were alive 72 h after injection of LPS compared with 20% of C57BL/6 control mice (P < 0.001). After injection of LPS and D-gal, CD7-deficient mice had decreased serum IFN-gamma and tumor necrosis factor (TNF)-alpha levels compared with control C57BL/6 mice (P < 0.001). Steady-state mRNA levels for IFN-gamma and TNF-alpha in liver tissue were also significantly decreased in CD7-deficient mice compared with controls (P < 0.05). In contrast, CD7-deficient animals had normal liver interleukin (IL)-12, IL-18, and interleukin 1 converting enzyme (ICE) mRNA levels, and CD7-deficient splenocytes had normal IFN-gamma responses when stimulated with IL-12 and IL-18 in vitro. NK1.1(+)/ CD3(+) T cells are known to be key effector cells in the pathogenesis of toxic shock. Phenotypic analysis of liver mononuclear cells revealed that CD7-deficient mice had fewer numbers of liver NK1.1(+)/CD3(+) T cells (1.5 +/- 0.3 x 10(5)) versus C57BL/6 control mice (3.7 +/- 0.8 x 10(5); P < 0.05), whereas numbers of liver NK1.1(+)/CD3(-) NK cells were not different from controls. Thus, targeted disruption of CD7 leads to a selective deficiency of liver NK1.1(+)/ CD3(+) T cells, and is associated with resistance to LPS shock. These data suggest that CD7 is a key molecule in the inflammatory response leading to LPS-induced shock.  (+info)

Reduced IL-4 and interferon-gamma (IFN-gamma) expression by CD4 T cells in patients with chronic lymphocytic leukaemia. (2/145)

CD7 co-expression by CD4 T cells has been reported to be higher in the Th1 compared with the Th2 functional subset. Clinical immunodeficiency and immune dysregulation are more prevalent in the advanced stages of B cell chronic lymphocytic leukaemia (B-CLL). To analyse this further 25 patients with B-CLL and 11 healthy subjects were examined for cell surface CD7 and intracellular IFN-gamma and IL-4 expression in the peripheral blood CD4+ T helper cell population. Significantly decreased CD7, IFN-gamma and IL-4 expression was observed in the patients with B-CLL (P < 0.001). While CD7 negativity and IL-4 expression were more frequent in the later stages of the disease, this did not attain statistical significance. These results suggest a possible explanation for the reduced cellular and humoral immunity in B-CLL.  (+info)

CD56+CD7+ stem cell leukemia/lymphoma with D2-Jdelta1 rearrangement. (3/145)

OBJECT: We describe the characteristics of three patients with CD56+CD7+ stem cell leukemia/lymphoma. METHODS: These blasts were analyzed for morphologic, karyotypic, immunophenotypic, and immunogenotypic features using Southern blot and polymerase chain reaction analysis. MATERIALS: Peripheral blood, bone marrow aspirates, or biopsied mediastinal tumor specimens of three CD56+CD7+ stem cell leukemia/lymphoma patients were investigated. RESULTS: The bone marrow of all patients showed myeloperoxidase (MPO) negative blast cells with basophilic cytoplasm and distinct nucleoli with no azurophilic granules. The blasts of two patients were classified as acute lymphoblastic leukemia (L2). The liver, spleen, and lymph nodes were unaffected in all patients. All had an aggressive clinical course. The blasts were strongly positive for both CD7 and CD56 but negative for other T-lineage associated antigens, including CD1, CD2, surface membrane CD3, cytoplasmic CD3c (2/2), CD4, CD5 and CD8. The additional antigens were recognized as follows: CD19 (1/3 cases) as a B lineage, CD33 (1/3) as a myeloid marker, CD34 (2/3) as a stem cell, CD38 (1/1) and HLA-DR (2/3). When the patients relapsed, the phenotypes changed to blasts positive for CD5, CD10 and CD13 in patient 1, CD5 in patient 2, and CD33 in patient 3. MPO, however, remained negative. Cytogenetic analysis showed no common abnormal karyotype. All had a common D2-Jdelta1 induced by T-cell specific enhancer. Rearrangement of TCR beta and gamma genes occurred in patient 2, and IgH and TCR beta underwent rearrangement in patient 3. CONCLUSION: Although a more comprehensive case analysis is necessary, these data suggest the possibility that the blasts of the present cases come from a common lymphoid precursor (T, NK, and B cell) or from a NKT precursor as the fourth lymphoid lineage.  (+info)

Flow cytometric immunophenotyping in fine-needle aspiration of lymph nodes. (4/145)

Fine-needle aspiration (FNA) of lymph nodes has been regarded as a useful method in the diagnosis of lymphadenopathy. However, this procedure has been shown to be of limited value in the diagnosis of low or intermediate grade malignant lymphomas in some studies. Immunophenotyping is an essential adjunct to cytomorphology for the diagnosis of lymphoma by FNA. Immunophenotyping using flow cytometry (FCM) is rapid, objective and reliable. Using FCM, multiparametric analysis of 33 FNA materials from lymph nodes was performed and profiles of surface markers of lymphoid cells were assessed. In reactive hyperplasia, patterns of cell surface markers were quite variable, but disclosed polyclonality. Most of the B-cell lymphomas showed immunophenotypes for B-cell lineages with their kappa: lambda or lambda: kappa ratio being over 3:1. In T-cell lymphomas, T-cell surface markers were predominantly expressed as well. In conclusion, our results suggest that immunophenotyping of lymph node aspirates is a valuable diagnostic adjunct for lymphoproliferative disorders, particularly in B-cell lymphomas because immunophenotyping can be easily and adequately performed by FCM.  (+info)

Restricted receptor segregation into membrane microdomains occurs on human T cells during apoptosis induced by galectin-1. (5/145)

Galectin-1 induces apoptosis of human thymocytes and activated T cells by an unknown mechanism. Apoptosis is a novel function for a mammalian lectin; moreover, given the ubiquitous distribution of the oligosaccharide ligand recognized by galectin-1, it is not clear how susceptibility to and signaling by galectin-1 is regulated. We have determined that galectin-1 binds to a restricted set of T cell surface glycoproteins, and that only CD45, CD43, and CD7 appear to directly participate in galectin-1-induced apoptosis. To determine whether these specific glycoproteins interact cooperatively or independently to deliver the galectin-1 death signal, we examined the cell surface localization of CD45, CD43, CD7, and CD3 after galectin-1 binding to human T cell lines and human thymocytes. We found that galectin-1 binding resulted in a dramatic redistribution of these glycoproteins into segregated membrane microdomains on the cell surface. CD45 and CD3 colocalized on large islands on apoptotic blebs protruding from the cell surface. These islands also included externalized phosphatidylserine. In addition, the exposure of phosphatidylserine on the surface of galectin-1-treated cells occurred very rapidly. CD7 and CD43 colocalized in small patches away from the membrane blebs, which excluded externalized phosphatidylserine. Receptor segregation was not seen on cells that did not die in response to galectin-1, including mature thymocytes, suggesting that spatial redistribution of receptors into specific microdomains is required for triggering apoptosis.  (+info)

Skewed expression of activation, differentiation and homing-related antigens in circulating cells from patients with cutaneous T cell lymphoma associated with CD7- T helper lymphocytes expansion. (6/145)

Mycosis fungoides and Sezary syndrome represent the most frequent forms of cutaneous T cell lymphoma. Both are characterized by skin infiltrating and/or circulating malignant cells displaying a CD4+CD7- phenotype in the majority of cases. Because an expansion of CD4+CD7- cells may also be found in inflammatory dermatoses or in the aging process, we evaluated, by flow cytometry, the relationship between CD7 expression and the distribution of differentiation/activation or homing antigens on peripheral blood lymphocytes from 36 cutaneous T cell lymphoma patients and from healthy donors. CD4+CD7- cells were increased in all patients with cutaneous T cell lymphoma. As a consequence, the CD7+/- ratio was reduced in stage I-II mycosis fungoides (3.96 vs 6.55 in healthy donors), and inverted in stage III-IV MF and Sezary syndrome (0.28 and 0.12 respectively). In the late stage of disease, the CD7+/- inverted ratio was strictly related to the expression of CD15s, CD60, and CD45R0, and the lack of expression of CD26 and CD49d. Interestingly, in leukemic patients, this phenotype was also associated with peculiar morphologic (large size) or phenotypical (CD3dim expression) characteristics. Furthermore, a progressive reduction of circulating CD8+ cells was also seen throughout all stages of disease. The presence of these populations in cutaneous T cell lymphoma at late phases of disease and Sezary syndrome suggests that all of these molecules may play an important part in the activation pathway and skin homing of circulating T cells in lymphoproliferative disorders. Therefore, this may constitute a distinctive feature in cutaneous T cell lymphoma patients with more aggressive characteristics.  (+info)

CD4 + /CD7- T cell frequency and polymerase chain reaction-based clonality assay correlate with stage in cutaneous T cell lymphomas. (7/145)

In cutaneous T cell lymphomas, tumor cells can be found in skin and in other compartments. A precise definition of extracutaneous spread including blood involvement is necessary for staging and treatment design. We investigated peripheral blood in 51 patients with various types of cutaneous T cell lymphomas by the analysis of blood smears for Sezary cells, the CD4 + /CD7- T helper cell frequency in the peripheral blood by fluorescence activated cell sorter analysis and by polymerase chain reaction for the T cell receptor gamma-chain followed by denaturing gradient gel electrophoresis. Eleven polymerase chain reaction products were sequenced. Thirty-five per cent of patients with stage Ia-IIb cutaneous T cell lymphomas presented a peripheral blood T cell clone. In patients with stage III-IVb cutaneous T cell lymphomas 75% were positive for clonality in the peripheral blood by polymerase chain reaction. Interestingly, three of 13 Sezary patients showed a TCR-gamma joining region pseudogene (JgammaP1/JgammaP2) usage. CD4 + /CD7- cell counts were significantly higher in patients with advanced cutaneous T cell lymphomas than in patients with early cutaneous T cell lymphomas. There was a correlation between increased percentage of circulating CD4 + /CD7- cells and detection of clonality by polymerase chain reaction (p = 0.001). There was no significant correlation between the polymerase chain reaction data and the percentage of Sezary cells on blood smears. A significant correlation between CD4 + /CD7- cells and Sezary cells was found, however. Stepwise logistic regression analysis showed that the CD4 + /CD7- cell count and clonal T cell detection in peripheral blood are independently correlated with stage. The combination of both parameters gives more information than each one separately. In conclusion, our data indicate that fluorescence activated cell sorter analysis of peripheral blood and polymerase chain reaction-based clonality assays can improve the accuracy of staging investigations in cutaneous T cell lymphomas patients.  (+info)

Identification of CD7 as a cognate of the human K12 (SECTM1) protein. (8/145)

CD7 is a 40-kDa protein found primarily on T, NK, and pre-B cells; the function of the CD7 protein in the immune system is largely unknown. The K12 (SECTM1) protein was originally identified by its location just upstream of the CD7 locus. The K12 gene encodes a transmembrane protein of unknown function. In order to clone a K12-binding protein, we generated a soluble version of the human K12 protein by fusing its extracellular domain to the Fc portion of human IgG(1). Flow cytometry experiments showed that the K12-Fc fusion protein bound at high levels to both human T and NK cells. Precipitation experiments using K12-Fc on (35)S-radiolabeled NK cells lysates indicated that the K12 cognate was an approximately 40-kDa protein. A human peripheral blood T cell cDNA expression library was screened with the K12-Fc protein, and two independent, positive cDNA clones were identified and sequenced. Both cDNAs encoded the same protein, which was CD7. Thus, K12 and CD7 are cognate proteins that are located next to each other on human chromosome 17q25. Additionally, we have cloned the gene encoding the mouse homologue of K12, shown that it maps near the mouse CD7 gene on chromosome 11, and established that the mouse K12 protein binds to mouse, but not human, CD7. Mouse K12-Fc inhibited in a dose-dependent manner concanavalin A-induced proliferation, but not anti-TcRalpha/beta induced proliferation, of mouse lymph node T cells. Human K12-Fc stimulated the up-regulation of CD25, CD54, and CD69 on human NK cells in vitro.  (+info)

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Waters MassTrak™ immunossuppressants solutions integrating HPLC, mass spectrometry, software and support services, have been enhanced to include a reagent kit for the quantification of whole blood samples as an aid in the management of tacrolimus therapy.
Objectives: To evaluate the impact of myeloid antigen expression on complete remission (CR), event-free survival (EFS), and overall survival (OS) in patients with T-cell acute lymphoblastic leukemia (T-ALL) treated with intensive chemotherapy. Methods: We retrospectively reviewed consecutive patients diagnosed with T-ALL and treated in Sultan Qaboos University Hospital and Royal Hospital in Oman between 2004 and 2010. The diagnosis of T-ALL was established using French-American-British classification or World Health Organization criteria. Patients were considered having myeloid antigen expression if they expressed CD13, CD33, or both (My+ and My-). Results: Of the 39 patients, 38 were included in the study (25 patients with My- and median age of 18.4 years, 13 patients with My+ and median age of 22.0 years). Median follow-up was 12 months. Thirty-two out of the total cohort were eligible for response-rate assessment. Twenty-nine patients (90.6%) achieved CR with one or two courses of ...
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Cutaneous T cell lymphomas (CTCLs) are a heterogenous group of lymphoproliferative disorders caused by clonally derived, skin-invasive T cells. Mycosis fungoides (MF) and Sézary syndrome (SS) are the most common types of CTCLs and are characterized by malignant CD4+/CLA+/CCR4+ T cells that also lack the usual T cell surface markers CD7 and/or CD26. As MF/SS advances, the clonal dominance of the malignant cells results in the expression of predominantly Th2 cytokines, progressive immune dysregulation in patients, and further tumor cell growth. This review summarizes recent insights into the pathogenesis and immunobiology of MF/SS and how these have shaped current therapeutic approaches, in particular the growing emphasis on enhancement of host antitumor immune responses as the key to successful therapy.. ...
Build: Fri Apr 12 22:16:45 EDT 2019 (commit: 82eed56). National Center for Advancing Translational Sciences (NCATS), 6701 Democracy Boulevard, Bethesda MD 20892-4874 • 301-435-0888. ...
Sézary syndrome is very rare, making up ,5% of cutaneous T cell lymphomas (therefore at least 10 times less common than mycosis fungoides). It has a similar age of onset and no known aetiology. It can be considered a leukaemic version of mycosis fungoides.. ...
Patients with cutaneous T cell lymphoma experience refractory and progressive disease despite current treatment, necessitating chronic disease management. In addition, there needs to be greater emphasis on combination treatment, which correlates with increased response rate, more rapid onset of response, and decreased side effect profile compared to monotherapy. The goal for the use of Lenalidomide as an adjuvant treatment in patients with refractory cutaneous T cell lymphoma is to increase response rates, maintain a durable long-term response, relieve associated symptoms, and minimize toxic side effects ...
Allogeneic stem cell transplantation may result in long-term remissions in a subset of patients with cutaneous T cell lymphomas (CTCL).
New epidemiological data have been provided regarding the incidence of different types of skin cancers, the effect of certain risk factors or drug or food protective factors, the overall improvement of survival in melanoma, the epidemiological, clinical, and/or therapeutic particularities of rapidely growing melanomas and thick melanomas, and the relations between sun exposure, skin cancers, and other solid tumors ...
Sezary syndrome is a subtype of cutaneous T cell lymphoma which usually presents as generalized skin disease with erytheroderma. Distal organ involvement is rare and is usually a late finding in the course of the disease. Breast involvement is extremely rare. Herein, we present a case report of a patient whose initial presentation involved an intramammary lymph node prior to the onset of more characteristic skin disease. Sezary syndrome was confirmed by cythopathologic findings.
These are a superbly written set of notes with coloured annotated diagrams on the respiratory system and the circulatory system. Although written for the OCR specification they would be useful to any biology student needing to study these topics for their specification. Team these up with a set of flashcards and a quiz or two for a complete set of resources.. - ****, 2014. ...
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This volume brings together preeminent basic researchers and clinical investigators who work on cutaneous T cell lymphoma (CTCL) from different perspectives, and suggests opportunities for valuable new interdisciplinary collaborations.
Looking for online definition of cutaneous t's in the Medical Dictionary? cutaneous t's explanation free. What is cutaneous t's? Meaning of cutaneous t's medical term. What does cutaneous t's mean?
Low dose dangerous substance eases cutaneous t - cell lymphoma in men charge with bph. Istodax side effects should make you deploy more sensitive to cutaneous t - cell lymphoma. Researchers who studied 299 women who were experiencing diarrhea from ais and randomly assigned them to receive 12 weeks is of preparation to be heard used with care
Immunophenotyping is the analysis of heterogeneous populations of cells for the purpose of identifying the presence and proportions of the various populations of interest. Clusters of Differentiation (CD) antigens are widely used for immunophenotyping.
Bogen SA, Pelley D, Charif M, McCusker M, Koh H, Foss F, Garifallou M, Arkin C, Zucker-Franklin D. Immunophenotypic identification of Sezary cells in peripheral blood. Am J Clin Pathol. 1996 Dec; 106(6):739-48. PMID: 8980349. ...
Cutaneous T cell lymphomas (CTCLs) represent a heterogeneous group of non-Hodgkin lymphomas that affect the skin. The pathogenesis of these conditions is poorly understood. For example, the signaling mechanisms contributing to the dysregulated growth of the neoplastic T cells are not well defined. Here, we demonstrate that loss of nuclear localization of pro-IL-16 facilitates CTCL cell proliferation by causing a decrease in expression of the cyclin dependent-kinase inhibitor p27Kip1. The decrease in p27Kip1 expression was directly attributable to an increase in expression of S-phase kinase-associated protein 2 (Skp2). Regulation of Skp2 is in part attributed to the nuclear presence of the scaffold protein pro-IL-16. T cells isolated from 11 patients with advanced CTCL, but not those from healthy controls or patients with T cell acute lymphocytic leukemia (T-ALL), demonstrated reduction in nuclear pro-IL-16 levels. Sequence analysis identified the presence of mutations in the 5ι end of the PDZ1 ...
Mycosis fungoides (MF) and Sézary syndrome (SS) are the most common subtypes of cutaneous T cell lymphoma (CTCL).MF is a mature T cell non-Hodgkin lymphoma with presentation in the skin but with potential involvement of the nodes, blood, and viscera.
Lindahl, Lise M. and Fredholm, Simon and Joseph, Claudine and Nielsen, Boye Schnack and Jønson, Lars and Willerslev-Olsen, Andreas and Gluud, Maria and Blümel, Edda and Petersen, David L. and Sibbesen, Nina and Hu, Tengpeng and Nastasi, Claudia and Krejsgaard, Thorbjørn and Jæhger, Ditte and Persson, Jenny L. and Mongan, Nigel P. and Wasik, Mariusz A. and Litvinov, Ivan V. and Sasseville, Denis and Koralov, Sergei B. and Bonefeld, Charlotte M. and Geisler, Carsten and Woetmann, Anders and Ralfkiaer, Elisabeth and Iversen, Lars and Odum, Niels (2016) STAT5 induces miR-21 expression in cutaneous T cell lymphoma. Oncotarget . ISSN 1949-2553 ...
0012] According to the present invention, antibody or immunoglobulin have the same meaning, and will be used equally in the present invention. The term antibody as used herein refers to immunoglobulin molecules and immunologically active portions of immunoglobulin molecules, i.e., molecules that contain an antigen binding site that immunospecifically binds an antigen. As such, the term antibody encompasses not only whole antibody molecules, but also antibody fragments as well as variants (including derivatives) of antibodies and antibody fragments. In natural antibodies, two heavy chains are linked to each other by disulfide bonds and each heavy chain is linked to a light chain by a disulfide bond. There are two types of light chain, lambda (l) and kappa (k). There are five main heavy chain classes (or isotypes) which determine the functional activity of an antibody molecule: IgM, IgD, IgG, IgA and IgE. Each chain contains distinct sequence domains. The light chain includes two domains, a ...
Vorinostat is a targeted therapy medicine used in the treatment of Cutaneous T Cell Lymphoma (CTCL). Vorinostat is thought to work by reducing the growth and division of lymphoma cells a process in the DNA which is involved in the gene regulation in these lymphomas.. Vorinostat is an oral capsule that you take every day. Vorinostat may have the following side effects:. ...
Cutaneous T cell lymphomas (CTCL) are a heterogeneous group of non-Hodgkin lymphomas of skin-homing T- lymphocytes. The most common forms are sk...
A purine nucleoside analog and antineoplastic agent used for the treatment of with acute T-cell lymphoblastic leukemia and T-cell lymphoblastic lymphoma with inadequate clinical response to prior chemotherapeutic treatments.
Citation. Finak G, Langweiler M, Jaimes M, Malek M, Taghiyar J, Korin Y, Raddassi K, Devine L, Obermoser G, Pekalski ML, Pontikos N, Diaz A, Heck S, Villanova F, Terrazzini N, Kern F, Qian Y, Stanton R, Wang K, Brandes A, Ramey J, Aghaeepour N, Mosmann T, Scheuermann RH, Reed E, Palucka K, Pascual V, Blomberg BB, Nestle F, Nussenblatt RB, Brinkman RR, Gottardo R, Maecker H, McCoy JP. Standardizing Flow Cytometry Immunophenotyping Analysis from the Human ImmunoPhenotyping Consortium.. Scientific Reports. 2016 Feb 10; 6: 20686.. External Citation. Abstract. Standardization of immunophenotyping requires careful attention to reagents, sample handling, instrument setup, and data analysis, and is essential for successful cross-study and cross-center comparison of data. Experts developed five standardized, eight-color panels for identification of major immune cell subsets in peripheral blood. These were produced as pre-configured, lyophilized, reagents in 96-well plates. We present the results of a ...
A 55 y/o woman was admitted to our hospital to be considered for the second renal transplant. She had agenesis of the left kidney and several stenotic segments in the right ureter which were associated with repeated pyenonephritides during her childhood. Ureteroplastic operation and partial resection of the right kidney were performed when she was 15 year old. Her renal function slowly deteriorated and at the age of 35 she started haemodialysis. A year later she received a cadaveric kidney and that graft functioned for 18 years. She underwent graftectomia and after one year on dialysis she received the second cadaveric kidney. The surgery was followed by delayed graft function, and a renal biopsy was performed on the day 6. C4d was negative and acute T-cell mediated rejection (ATCMR) grade IIA was diagnosed. She was treated with solumedrol. Her renal function slowly improved and the serum creatinine level (S-Cr) stabilized on 170μmol/l (1.9mg/dl). She felt well and came to the hospital 3 months ...
This process prevents the circulation of T cells that are self-reactive and recognise self antigen. Both galectin-1 and ... but specifically CD7, CD43 and CD45 are involved in apoptosis. Galectin-7 is expressed under the p53 promoter and may have a ...
Subrahmanyam G, Rudd CE, Schneider H (2003). "Association of T cell antigen CD7 with type II phosphatidylinositol-4 kinase, a ...
In Lutzner cells, there is a mutation in the T-cell receptor that inhibits antigens like CD8 and CD7, but stimulates the over ... It binds to a specific antigen to initiate an immune response. T-cell antibodies bind to antigens such as virus infected cells ... Once this antigen is lost, the T-cell antibodies will never be able to detect the pathogen, allowing the pathogen to increase ... When a cutaneous lymphocyte antigen is expressed in the skin, the CD4+ Lutzner cell travels to the epidermis and dermis layers ...
... and the neoplastic cells are typically positive for pan-T antigens CD2, CD3, and CD7 and negative for TdT and CD1a. The ...
The proliferating lymphocytes in NKCE and LG express CD56 and CD7 proteins on their cell surface membrane, CD3γ protein in ... their cytoplasm, and granzyme B, perforin, and T-cell intracellular antigen-1 cytotoxic proteins within their cytoplasmic ...
... antigens, cd4 MeSH D23.050.301.264.035.105 - antigens, cd5 MeSH D23.050.301.264.035.107 - antigens, cd7 MeSH D23.050.301.264. ... antigens, cd4 MeSH D23.050.301.264.894.101 - antigens, cd5 MeSH D23.050.301.264.894.107 - antigens, cd7 MeSH D23.050.301.264. ... antigens, cd4 MeSH D23.101.100.110.105 - antigens, cd5 MeSH D23.101.100.110.107 - antigens, cd7 MeSH D23.101.100.110.108 - ... antigens, cd4 MeSH D23.101.100.894.101 - antigens, cd5 MeSH D23.101.100.894.107 - antigens, cd7 MeSH D23.101.100.894.108 - ...
Aruffo A, Seed B (November 1987). "Molecular cloning of two CD7 (T-cell leukemia antigen) cDNAs by a COS cell expression system ... CD7+protein,+human at the US National Library of Medicine Medical Subject Headings (MeSH) Human CD7 genome location and CD7 ... "Entrez Gene: CD7 CD7 molecule". Lee DM, Patel DD, Pendergast AM, Haynes BF (August 1996). "Functional association of CD7 with ... Baker E, Sandrin MS, Garson OM, Sutherland GR, McKenzie IF, Webber LM (1990). "Localization of the cell surface antigen CD7 by ...
... are antigens found on all T cells. They include CD2, CD3, CD5 and CD7. Mario Roederer (October 2004). Cytometry ...
These surface molecules in turn can transmit important antigen-sensing signals during infection. CD49a+NKG2C+ NK cells are the ... In comparison to CD56dim cNK cells, adaptive NK cells generally show decreased expression of surface CD7, CD161, NKp30, NKp46, ... This so-called memory-like functionality is antigen-unspecific and characterized by an increased proliferative capacity, long- ... Importantly, both memory-like functionalities are antigen-unspecific and mean "remembering" a previous state of increased ...
The ability of T cells to recognize foreign antigens is mediated by the T cell receptor (TCR), which is a surface protein able ... Early, double negative thymocytes express (and can be identified by) CD2, CD5 and CD7. Still during the double negative stage, ... This allows single positive thymocytes to be exposed to a more complex set of self-antigens than is present in the cortex, and ... Cells which do not have a high affinity for self-antigens survive negative selection. At this stage, some cells are also ...
It is also called Lewis x and SSEA-1 (stage-specific embryonic antigen 1) and represents a marker for murine pluripotent stem ... CD15 Antigen at the US National Library of Medicine Medical Subject Headings (MeSH) ... CD15 (3-fucosyl-N-acetyl-lactosamine) is a cluster of differentiation antigen - an immunologically significant molecule. CD15 ...
"Direct association of adenosine deaminase with a T cell activation antigen, CD26". Science. 261 (5120): 466-9. doi:10.1126/ ...
In addition to aiding with cytotoxic T cell antigen interactions the CD8 co-receptor also plays a role in T cell signaling. The ... the CD8 co-receptor plays a role in T cell signaling and aiding with cytotoxic T cell antigen interactions. ... This affinity keeps the T cell receptor of the cytotoxic T cell and the target cell bound closely together during antigen- ... Once the T cell receptor binds its specific antigen Lck phosphorylates the cytoplasmic CD3 and ζ-chains of the TCR complex ...
... is a co-receptor of the T cell receptor (TCR) and assists the latter in communicating with antigen-presenting cells. The ... Leucocyte typing: human leucocyte differentiation antigens detected by monoclonal antibodies: specification, classification, ... T cells displaying CD4 molecules (and not CD8) on their surface, therefore, are specific for antigens presented by MHC II and ... CD1+Antigen at the US National Library of Medicine Medical Subject Headings (MeSH) ...
CD64+Antigens at the US National Library of Medicine Medical Subject Headings (MeSH) ...
Human Antibodies Against Cell Surface Tumor Antigens Selected From Repertoires Displayed on T Cell Chimeric Antigen Receptors" ... CD2, CD3, CD4, CD5, CD7, CD8 - + TdT + + CytogeneticsEdit. Cytogenetic analysis has shown different proportions and frequencies ... TdT is a protein expressed early in the development of pre-T and pre-B cells, whereas CALLA is an antigen found in 80% of ALL ... Chimeric antigen receptors (CARs) have been developed as a promising immunotherapy for ALL. This technology uses a single chain ...
CD7 It often presents as a mediastinal mass because of involvement of the thymus. It is highly associated with NOTCH1 mutations ... Four chimeric antigen receptor CAR-T cell therapies are FDA-approved for non-Hodgkin lymphoma, including lisocabtagene ...
1997). "The Oka blood group antigen is a marker for the M6 leukocyte activation antigen, the human homolog of OX-47 antigen, ... 1992). "Human leukocyte activation antigen M6, a member of the Ig superfamily, is the species homologue of rat OX-47, mouse ... Kasinrerk W, Fiebiger E, Stefanová I, Baumruker T, Knapp W, Stockinger H (1992). "Human leukocyte activation antigen M6, a ... Ok blood group system at BGMUT Blood Group Antigen Gene Mutation Database at NCBI, NIH ...
Tissue Antigens (англ.)русск. : journal. - 2007. - Vol. 68, no. 6. - P. 509-517. - DOI:10.1111/j.1399-0039.2006.00726.x. - PMID ...
In humans, the CD44 antigen is encoded by the CD44 gene on Chromosome 11.[5] CD44 has been referred to as HCAM (homing cell ... The CD44 antigen is a cell-surface glycoprotein involved in cell-cell interactions, cell adhesion and migration. ... Indian blood group system at BGMUT Blood Group Antigen Gene Mutation Database at NCBI, NIH ... "Carcinoembryonic antigen and CD44 variant isoforms cooperate to mediate colon carcinoma cell adhesion to E- and L-selectin in ...
CD74 (англ. HLA class II histocompatibility antigen gamma chain; HLA-DR antigens-associated invariant chain) - мембранный белок ... II histocompatibility antigen gamma chaingamma chain of class II antigensIiHLA-DR antigens-associated invariant chainIa antigen ... Riberdy J.M., Newcomb J.R., Surman M.J., Barbosa J.A., Cresswell P. HLA-DR molecules from an antigen-processing mutant cell ... Machamer C.E., Cresswell P. Biosynthesis and glycosylation of the invariant chain associated with HLA-DR antigens (англ.) // ...
... uveitis antigens induce CXCR3- and CXCR5-expressing lymphocytes and immature dendritic cells to migrate (англ.) // Blood (англ ...
primaarne CD7 T-rakkude defitsiit. *IL-2 defitsiit (põhjuseks ilmselt IL-2 geeni võimetus transkribeerida, sündroomi esineb ... Changying Ling, Matyas Sandor, M. Suresh, ja Zsuzsa Fabry, Traumatic Injury and the Presence of Antigen Differentially ...
Seligman P. A., Butler C. D., Massey E. J., etal. The p97 antigen is mapped to the q24-qter region of chromosome 3; the same ... Le Beau M. M., Diaz M. O., Plowman G. D., etal. Chromosomal sublocalization of the human p97 melanoma antigen. (англ.) // Hum. ... Plowman G. D., Brown J. P., Enns C. A., etal. Assignment of the gene for human melanoma-associated antigen p97 to chromosome 3 ... Rose T. M., Plowman G. D., Teplow D. B., etal. Primary structure of the human melanoma-associated antigen p97 ( ...
CD1 (a-c, 1A, 1D, 1E) • CD2 • CD3 (γ, δ, ε) • CD4 • CD5 • CD6 • CD7 • CD8 (a) • CD9 • CD10 • CD11 (a, b, c) • CD13 • CD14 • ... CD97 antigen je protein koji je kod ljudi kodiran CD97 genom.[1][2][3] ... 2001). „Tissue distribution of the human CD97 EGF-TM7 receptor". Tissue Antigens. 57 (4): 325-31. PMID 11380941. doi:10.1034/j. ... Expression cloning and chromosomal mapping of the leukocyte activation antigen CD97, a new seven-span transmembrane molecule of ...
A new ligand for human leukocyte antigen class II antigens". The Journal of Experimental Medicine. 176 (2): 327-37. doi:10.1084 ... A new ligand for human leukocyte antigen class II antigens". The Journal of Experimental Medicine. 176 (2): 327-37. doi:10.1084 ... antigen processing and presentation of exogenous peptide antigen via MHC class II. ... antigen binding. • transmembrane signaling receptor activity. • MHC class II protein binding. Cellular component. • membrane. • ...
Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5) also known as CD66e (Cluster of Differentiation 66e), is a ... 2001). "Heterogeneous RNA-binding protein M4 is a receptor for carcinoembryonic antigen in Kupffer cells". J. Biol. Chem. 276 ( ... CEACAM5, CD66e, CEA, carcinoembryonic antigen related cell adhesion molecule 5. External IDs. HomoloGene: 128801 GeneCards: ... Oikawa S, Nakazato H, Kosaki G (1987). "Primary structure of human carcinoembryonic antigen (CEA) deduced from cDNA sequence". ...
van Rhenen A., van Dongen G. A., Kelder A., et al. The novel AML stem cell associated antigen CLL-1 aids in discrimination ...
CD1 (a-c, 1A, 1D, 1E) • CD2 • CD3 (γ, δ, ε) • CD4 • CD5 • CD6 • CD7 • CD8 (a) • CD9 • CD10 • CD11 (a, b, c) • CD13 • CD14 • ... 1991). „Expression of the YB5.B8 antigen (c-kit proto-oncogene product) in normal human bone marrow". Blood. 78 (1): 30-7. PMID ... 2003). „Signal transduction-associated and cell activation-linked antigens expressed in human mast cells". Int. J. Hematol. 75 ...
CD1 (a-c, 1A, 1D, 1E) • CD2 • CD3 (γ, δ, ε) • CD4 • CD5 • CD6 • CD7 • CD8 (a) • CD9 • CD10 • CD11 (a, b, c) • CD13 • CD14 • ... 1996). "CD88 antibodies specifically bind to C5aR on dermal CD117+ and CD14+ cells and react with a desmosomal antigen in human ...
CD1 (a-c, 1A, 1D, 1E) • CD2 • CD3 (γ, δ, ε) • CD4 • CD5 • CD6 • CD7 • CD8 (a) • CD9 • CD10 • CD11 (a, b, c) • CD13 • CD14 • ... 2000). "Characterization of a new member of the TNF family expressed on antigen presenting cells.". Biol. Chem. 380 (12): 1443- ... "BLyS receptor signatures resolve homeostatically independent compartments among naïve and antigen-experienced B cells.". Semin ...
I. Partial characterization of soluble Ki-1 antigen and detection of the antigen in cell culture supernatants and in serum by ... Josimovic-Alasevic O, Dürkop H, Schwarting R, Backé E, Stein H, Diamantstein T (Jan 1989). "Ki-1 (CD30) antigen is released by ... CD30+Antigens at the US National Library of Medicine Medical Subject Headings (MeSH) ... results from cDNA cloning and sequence comparison of the CD30 antigen from different sources". Molecular Immunology. 31 (17): ...
Macrophage-1 antigen (CD11b+CD18). *VLA-4 (CD49d+CD29). *Glycoprotein IIb/IIIa (ITGA2B+ITGB3) ...
"Interaction of glycogen synthase kinase 3beta with the DF3/MUC1 carcinoma-associated antigen and beta-catenin". Molecular and ...
Ebert LM, McColl SR (2002). "Up-regulation of CCR5 and CCR6 on distinct subpopulations of antigen-activated CD4+ T lymphocytes ... This receptor has been shown to be important for B-lineage maturation and antigen-driven B-cell differentiation, and it may ... dendritic cells induce antitumor immunity when genetically fused with nonimmunogenic tumor antigens". J. Immunol. 167 (11): ...
CD1 (a-c, 1A, 1D, 1E) • CD2 • CD3 (γ, δ, ε) • CD4 • CD5 • CD6 • CD7 • CD8 (a) • CD9 • CD10 • CD11 (a, b, c) • CD13 • CD14 • ... CD97 antigen je protein koji je kod ljudi kodiran CD97 genom.[1][2][3] ... 2001). "Tissue distribution of the human CD97 EGF-TM7 receptor". Tissue Antigens 57 (4): 325-31. PMID 11380941. doi:10.1034/j. ... "Expression cloning and chromosomal mapping of the leukocyte activation antigen CD97, a new seven-span transmembrane molecule of ...
"Entrez Gene: ITGB3 integrin, beta 3 (platelet glycoprotein IIIa, antigen CD61)".. *^ May, K. E.; Villar, J.; Kirtley, S.; ... CD61+Antigens at the US National Library of Medicine Medical Subject Headings (MeSH) ...
B cells can present antigens to a specialized group of helper T cells called TFH cells. If an activated TFH cell recognizes the ... Roles of T cell-B-cell-activating molecule (5c8 antigen) and CD40 in contact-dependent help". Journal of Immunology. 149 (12): ... It binds to CD40 (protein) on antigen-presenting cells (APC), which leads to many effects depending on the target cell type. In ... Grewal, IS; Xu, J; Flavell, RA (7 December 1995). "Impairment of antigen-specific T-cell priming in mice lacking CD40 ligand". ...
antigen processing and presentation of peptide antigen via MHC class I. • antigen processing and presentation of exogenous ... antigen processing and presentation of exogenous peptide antigen via MHC class I. • lipoprotein transport. • negative ... peptide antigen via MHC class I, TAP-dependent. • platelet degranulation. • MyD88-dependent toll-like receptor signaling ...
Primarily, the VCAM-1 protein is an endothelial ligand for VLA-4 (Very Late Antigen-4 or integrin α4β1) of the β1 subfamily of ...
antigen binding. • virus receptor activity. • protein binding. • transmembrane signaling receptor activity. • identical protein ...
T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell. • T cell antigen ... CD1 (a-c, 1A, 1D, 1E) · CD2 · CD3 (γ, δ, ε) · CD4 · CD5 · CD6 · CD7 · CD8 (a) · CD9 · CD10 · CD11 (a, b, c, d) · CD13 · CD14 · ...
Eichler W, Hamann J, Aust G (Nov 1997). "Expression characteristics of the human CD97 antigen". Tissue Antigens. 50 (5): 429-38 ... Hamann J, Wishaupt JO, van Lier RA, Smeets TJ, Breedveld FC, Tak PP (Apr 1999). "Expression of the activation antigen CD97 and ... Tissue Antigens. 57 (4): 325-31. doi:10.1034/j.1399-0039.2001.057004325.x. PMID 11380941.. ... "Expression cloning and chromosomal mapping of the leukocyte activation antigen CD97, a new seven-span transmembrane molecule of ...
We selected CD7 as a target because of its consistent expression in T-cell acute lymphoblastic leukemia (T-ALL), including the ... We devised a novel approach based on chimeric antigen receptor (CAR)-redirected T lymphocytes. ... T cells with downregulated CD7 by PEBL acquire powerful cytotoxicity against CD7+leukemic cells after expression of anti-CD7 ... Blockade of CD7 Expression in T Cells for Effective Chimeric Antigen Receptor Targeting of T-cell Malignancies Yi Tian Png 1 , ...
CD7 antigen products including antibody, recombinant protein and clone gene. ... CD7 plays an essential role in T-cell interactions and also in T-cell/B-cell interaction during early lymphoid development. ... CD7 antigens. CD7 antigens research reagents. CD7 Protein, Antibody, ELISA Kit, cDNA Clone. CD7 Proteins. CD7 Antibody. CD7 ... CD7 Function T-cell interactions. CD7 Summary This gene encodes a transmembrane protein which is a member of the immunoglobulin ...
This gene encodes a transmembrane protein which is a member of the immunoglobulin superfamily. This protein is found on thymocytes and mature T cells. It plays an essential role in T-cell interactions and also in T-cell/B-cell interaction during early lymphoid development. [provided by RefSeq, Jul 2008 ...
The CD7 antigen is a membrane-embedded glycoprotein with a molecular weight of 40 kDa. It is expressed at an early stage of T ... CD7 Antigen. The CD7 antigen is a membrane-embedded glycoprotein with a molecular weight of 40 kDa. It is expressed at an early ... CD7 expression persists throughout T lymphocytes differentiation defining CD7 as a pan-T marker. It is also expressed on ... Mature B-lymphocytes, cells from erythroid, myeloid and megacaryocytic lineage do not express the CD7 molecule. The CD7 ...
Browse our 4 CD7 resource search results. Abcam provides a large range of protocols, pathways, webinars, guides, articles, ...
CD7 Molecule, including: function, proteins, disorders, pathways, orthologs, and expression. GeneCards - The Human Gene ... Protein details for CD7 Gene (UniProtKB/Swiss-Prot). Protein Symbol:. P09564-CD7_HUMAN. Recommended name:. T-cell antigen CD7 ... GeneCards Summary for CD7 Gene CD7 (CD7 Molecule) is a Protein Coding gene. Diseases associated with CD7 include Pityriasis ... No data available for DME Specific Peptides for CD7 Gene Domains & Families for CD7 Gene Gene Families for CD7 Gene. HGNC:. * ...
Ausgesuchte Qualitäts-Hersteller für CD7 Antikörper. Hier bestellen. ... Monoklonale und polyklonale CD7 Antikörper für viele Methoden. ... CD7) Antikörper CD7 antigen (p41) , T-cell antigen CD7 , T-cell ... anti-CD7 (CD7) Antikörper. Bezeichnung:. anti-CD7 Antikörper (CD7). Auf www.antikoerper-online.de finden Sie aktuell 534 CD7 ... Am meisten referenzierte anti-CD7 Antikörper. Show all anti-CD7 (CD7) Antikörper with Pubmed References. * Human Monoclonal CD7 ...
CD7. CD7 is an NK and T cell marker that is highly expressed in 30% of AML cases. Its expression is associated with a worse ... These antigens are classified as tumor-specific antigens and mutation-causing over-expression antigens [ 82. ]. CD19 is a ... Blood group-related antigens. Int J Cancer. 1997;73:50. PubMedCrossRef Zhang S. Selection of tumor antigens as targets for ... Most of the antigens currently studied are mutation-causing over-expression antigens, which result in fatal "on-target/off- ...
... products and learn more about CD7 Mouse anti-Human, Brilliant Violet 711, Clone: M-T701, BD 100 Tests; 100 Tests; Brilliant ... The CD7 antigen is also known as Leu-9, TP41, Tp40, GP40, and T-cell leukemia antigen. It is expressed on thymocytes, T cells, ... The M-T701 monoclonal antibody specifically binds to CD7. CD7 is a 40 kDa type I transmembrane glycoprotein that belongs to the ... CD7 is present in reduced density on monocytic cells and cell lines. Functional studies demonstrate that crosslinking of the ...
Flow Cytometry Shop CD7 Mouse anti-Human, Biotin, Clone: ... Antigen. CD7. Classification. Monoclonal. Conjugate. Biotin. ... CD7 Antibody Biotin conjugate (MG34), MA1-12025, from Invitrogen™. Species Reactivity: Human; Applications: ... CD7 is expressed on the majority of immature and mature T-lymphocytes, and T cell leukemia. Further, CD7 is also found on ... CD7 (gp40, Leu9) is a 40 kDa member of the immunoglobulin gene superfamily. CD7 contains N-terminal amino acids 1-107 are ...
Thy 1 cell surface antigen. *Thy 1 membrane glycoprotein. *Thy 1 T cell antigen ...
what cells are positive for CD138 (syndecan 1), high-density CD38 antigen, and monoclonal cytoplasmic immunoglobulins ... absence of CD7 antigen 36 How many sezary cells to be classified as sezary syndrome ...
... and CD7 are preferred pan-T cell markers, although they are also expressed on subsets of other cell types (3). The mouse CD7 ... Mouse Cell Surface Antigens: Nomenclature and Immunophenotyping Message Subject (Your Name) has forwarded a page to you from ... Mouse Cell Surface Antigens: Nomenclature and Immunophenotyping. Lily Lai, Noosheen Alaverdi, Lois Maltais and Herbert C. Morse ... Cell surface antigens expressed by subsets of pre-B cells and B cells. J. Immunol. 132: 332. ...
Pan-T antigens are antigens found on all T cells. They include CD2, CD3, CD5 and CD7. Mario Roederer (October 2004). Cytometry ...
CD79A antigen K06507 CD79B; CD79B antigen K05412 CD80; CD80 antigen K06508 CD81; CD81 antigen K06509 KAI1; CD82 antigen K06510 ... 924 CD7; CD7 molecule 925 CD8A; CD8a molecule 926 CD8B; CD8b molecule 927 CD8B2; CD8b2 molecule 928 CD9; CD9 molecule 4311 MME ... CD300 antigen K06719 CD300; CD300 antigen K06719 CD300; CD300 antigen K06719 CD300; CD300 antigen K06721 CLEC10A; C-type lectin ... CD96 antigen K08446 ADGRE5; CD97 antigen K06519 SLC3A2; solute carrier family 3, member 2 K06520 CD99; CD99 antigen K06521 ...
Expression of CD7 antigen precludes t(8;21)(q22;q22) chromosome aberration in acute myeloblastic leukemia. Blood 1992; 79: 3092 ... and an absence of CD7 antigen expression when compared to t(8;21) negative M2 AML.9,12,30 In this study, we demonstrated that t ... frequent expression of immature B-cell antigen CD19 together with the stem cell antigen CD34. Blood 1992; 80: 470-477. ... Expression of surface antigens on t(8;21) AML. Table 4 and Figure 2 show the median percentage of positive cells, and the range ...
CD7/C13 Cocktail Antibody, FITC, PE conjugate from Invitrogen for Flow Cytometry applications. This antibody reacts with Human ... T-cell antigen CD7; T-cell leukemia antigen; T-cell surface antigen Leu-9; Tp40; TP41 ... CD7; CD7 antigen (p41); gp150; GP40; hAPN; LEU-9; membrane alanyl aminopeptidase; membrane protein p161; Microsomal ... Cite CD7/C13 Antibody Cocktail, FITC, PE. The following antibody was used in this experiment: CD7/C13 Antibody Cocktail, FITC, ...
Chimeric antigen receptor T-cell therapies have shown remarkable efficacy in leukemia and lymphoma patients who relapsed or ... GC027 targets CD7, an antigen present in about 95 percent of T-ALL. Gracell engineered the allogeneic CAR-T therapy with its ... Chimeric antigen receptor T-cell therapies have shown remarkable efficacy in leukemia and lymphoma patients who relapsed or ... These next-generation approaches attempt to address issues such as CAR-T cell persistence, loss of response due to antigen ...
Thymus cell surface antigen Gene Aliases: CD7; CD90; T25; Thy-1; Thy-1.2; Thy1; Thy1.1; Thy1.2 ... CD90 (Thy 1) antigen is a GPI linked glycoprotein member of the Immunoglobulin super family. It is expressed in murine T cells ... Protein Aliases: CD90; FLJ33325; Thy 1.2; Thy-1 antigen; thy-1 glycoprotein; Thy-1 membrane glycoprotein; Thy-1 protein; thymus ...
CD7 activates phosphatidylinositol 3-kinase which is involved in CD7-mediated regulation of integrin adhesiveness. Furthermore ... CD7 appears early in T cell ontogeny and is expressed by most T cells in the periphery. It is also found on NK cells, ... Although the ligand is yet not identified, CD7 has been recognized as a costimulatory molecule. ... it has been reported that the β-galactoside-binding lectin galectin-1 binds CD7, leading to induction of apoptosis of ...
CD7 activates phosphatidylinositol 3-kinase which is involved in CD7-mediated regulation of integrin adhesiveness. Furthermore ... CD7 appears early in T cell ontogeny and is expressed by most T cells in the periphery. It is also found on natural killer (NK ... Although the ligand is yet not identified, CD7 has been recognized as a costimulatory molecule. ... it has been reported that the β-galactoside-binding lectin galectin-1 binds CD7, leading to induction of apoptosis of ...
5] The malignant clone frequently lacks normal T-cell antigens such as CD2, CD5, or CD7. ... Cutaneous T cells express cutaneous lymphocyte antigen (CLA), an adhesion molecule that mediates tethering of the T lymphocyte ...
Known as immunophenotyping - flow cytometry looks at the antigens expressed on the cells. ...
The most frequent down-regulated antigen is CD7, closely followed by CD5. (285) However, that downregulation is not absolute, ... and some benign inflammatory infiltrates, especially acute ones, show loss of CD7. (293) Therefore, interpretation of CD7 ... Factor VIII-related antigen (von Willebrand factor) is specific for endothelial cells but has a low sensitivity, and because it ... Latency-associated nuclear antigen expression and human herpesvirus-8 polymerase chain reaction in the evaluation of Kaposi ...
Have 1+ myeloid-associated antigens (CD13, CD33, CD117). ● CD34, CD99 and HLA-DR (70%, Mod Pathol 2000;13:452). ● CD7 (30%); ...
Antigen CD90 (THY1) Synonyme für dieses Antigen anzeigen * CD90 * CD7 * T25 * Thy-1 ... anti-CD74 Antigen (Invariant Polypeptide of Major Histocompatibility Complex, Class II Antigen-Associated) Antikörper ...
AML cases appear to have unique immature characteristics including low expression of myelomonocytic differentiation antigens ( ... The typical expression pattern of myelomonocytic differentiation antigens and cytokine receptors in CD4+ AML was ... The putative anti-leukemic effects of anti-thymocyte globulins in patients with CD7-positive acute myeloid leukemia *Kiyosumi ... The typical expression pattern of myelomonocytic differentiation antigens and cytokine receptors in CD4+ AML was CD34lowCD33 ...
Aruffo A, Seed B (November 1987). "Molecular cloning of two CD7 (T-cell leukemia antigen) cDNAs by a COS cell expression system ... CD7+protein,+human at the US National Library of Medicine Medical Subject Headings (MeSH) Human CD7 genome location and CD7 ... "Entrez Gene: CD7 CD7 molecule". Lee DM, Patel DD, Pendergast AM, Haynes BF (August 1996). "Functional association of CD7 with ... Baker E, Sandrin MS, Garson OM, Sutherland GR, McKenzie IF, Webber LM (1990). "Localization of the cell surface antigen CD7 by ...
Immunostains for CD2, TIA-1 (T-cell intracellular antigen 1), CD56, CD4, CD7, EBV-LMP, CD8, and PAX5 were performed by USLABS ( ... The EBV-VCA (viral capsid antigen) IgM level was 6.37 IU (normal range: 0.00-0.99), and EBV early antigen IgG was 4.72 IU ( ... Second, despite a preponderance of T-cell antigens in one cell type and B-cell antigens in the other, only immunoglobulin gene ... Unlike the current case, this case expressed CD3 and other T-cell antigens, lacked B-cell antigens (PAX-5 was not performed), ...
113247004 CD6; T-cell differentiation antigen CD6 isoform X1 113244475 CD7; T-cell antigen CD7 113242873 CD8A; T-cell surface ... CD79A antigen K06507 CD79B; CD79B antigen K05412 CD80; CD80 antigen K06508 CD81; CD81 antigen K06509 KAI1; CD82 antigen K06510 ... CD33 antigen K06474 CD34; CD34 antigen K06259 CD36; CD36 antigen K06475 CD37; CD37 antigen K01242 CD38; ADP-ribosyl cyclase 1 [ ... CD300 antigen K06719 CD300; CD300 antigen K06719 CD300; CD300 antigen K06719 CD300; CD300 antigen K06721 CLEC10A; C-type lectin ...
  • Mature B-lymphocytes, cells from erythroid, myeloid and megacaryocytic lineage do not express the CD7 molecule. (beckman.com)
  • The CD7 molecule is involved in T lymphocytes activation. (beckman.com)
  • CD7 (CD7 Molecule) is a Protein Coding gene. (genecards.org)
  • Rabinowich, Pricop, Herberman, Whiteside: Expression and function of CD7 molecule on human natural killer cells. (antikoerper-online.de)
  • The CD7 molecule is absent in a subset of human T cells under certain physiologic conditions. (thermofisher.com)
  • Although the ligand is yet not identified, CD7 has been recognized as a costimulatory molecule. (miltenyibiotec.com)
  • Cutaneous T cells express cutaneous lymphocyte antigen (CLA), an adhesion molecule that mediates tethering of the T lymphocyte to endothelial cells in cutaneous postcapillary venules via its interaction with E selectin. (medscape.com)
  • CD7 is an immunoglobulin superfamily molecule expressed on T, NK, and pre-B lymphocytes. (springer.com)
  • Sempowski GD, Lee DM, Kaufman RE, Haynes BF: Structure and function of the CD7 molecule. (springer.com)
  • Rabinowich H, Pricop L, Herberman RB, Whiteside TL: Expression and function of CD7 molecule on human natural killer cells. (springer.com)
  • To identify the intracellular signals which increase the adhesiveness of leukocyte function-associated antigen 1 (LFA-1), we established an assay system for activation-dependent adhesion through LFA-1/intercellular adhesion molecule 1 ICAM-1 using mouse lymphoid cells reconstituted with human LFA-1 and then introduced constitutively active forms of signaling molecules. (asm.org)
  • CD7-6B7 recognizes the human CD7 antigen, a single-pass type I membrane protein, also known as leu-9 or GP40. (miltenyibiotec.com)
  • Carrel S, Salvi S, Rafti F, Favrot M, Rapin C, Sekaly RP: Direct involvement of CD7 (gp40) in activation of TcR gamma/delta + T cells. (springer.com)
  • We devised a novel approach based on chimeric antigen receptor (CAR)-redirected T lymphocytes. (nih.gov)
  • CAR is an artificial antigen receptor that mediates antibody-targeted recognition. (springermedizin.de)
  • Chimeric antigen receptor T-cell therapies have shown remarkable efficacy in leukemia and lymphoma patients who relapsed or were refractory to several prior treatments, but many challenges remain in the cancer cell therapy field. (xconomy.com)
  • Nishimura M, Takanashi M, Okazaki H, Satake M, Nakajima K: Role of CD7 expressed in lung microvascular endothelial cells as Fc receptor for immunoglobulin M. Endothelium. (exbio.cz)
  • In this study, investigators attach the CD7 chimeric receptor with CD28 added to it to T cells that have had CD7 removed from their surface. (bcm.edu)
  • In addition, markers recently developed for PDCs, including CD123 (the interleukin-3 receptor), blood dendritic cell antigen 2 (BDCA2/CD303), (5) and T-cell leukemia/lymphoma 1 (TCL1) and CD2-associated protein (CD2AP), (6) were rarely tested in the literature published prior to 2008. (thefreelibrary.com)
  • Southern blot analysis revealed rearranged bands on both heavy- and lambda light-chain genes, in contrast to germline configuration on T cell antigen receptor (beta, gamma and delta) genes. (biomedsearch.com)
  • In 60% of patients with transfusion dependency or progressive disease, myeloid blasts expressed CD7 or CD56, in contrast to only 9% of non-transfusion-dependent patients. (bloodjournal.org)
  • CD57 is the most commonly expressed cell antigen and CD56 is the least commonly expressed cell antigen. (scielo.br)
  • CD7, CD56) identified low levels (11-2684 mL −1 ) of CLCs. (rsc.org)
  • 90% of all AML patients using the markers selected for this study (selection markers CD33, CD34, CD117 and aberrant markers such as CD7 and CD56). (rsc.org)
  • The typical expression pattern of myelomonocytic differentiation antigens and cytokine receptors in CD4 + AML was CD34 low CD33 high CD11b high GM-CSFR high . (nature.com)
  • However, CD4 + CD34 high AML cases appear to have unique immature characteristics including low expression of myelomonocytic differentiation antigens (ie CD33 and CD11b), and accumulation of chromosome abnormalities (ie t(8;21) in CD4 low CD34 high AML and chromosome 7 abnormalities in CD4 high CD34 high AML). (nature.com)
  • The microfluidic devices targeted CD33, CD34, and CD117 cell surface antigens commonly expressed by AML leukemic cells so that each subpopulation's CLC numbers could be tracked to determine the onset of relapse. (rsc.org)
  • Immobilized Delta-1 also induced a multifold expansion of cells with the phenotype of common lymphoid precursors (CD34 + CD7 + CD45RA + ) and promoted the development of cytoplasmic CD3 + T/NK cell precursors. (jci.org)
  • Precursor B-cell ALL cells typically express CD10, CD19, and CD34 on their surface, along with nuclear terminal deoxynucleotide transferase (TdT), while precursor T-cell ALL cells commonly express CD2, CD3, CD7, CD34, and TdT. (rexhealth.com)
  • Anti-human CD7 antibodies. (agilent.com)
  • Fully human antibodies against a specific antigen can be prepared by administering the antigen to a transgenic animal which has been modified to produce such antibodies in response to antigenic challenge, but whose endogenous loci have been disabled. (freepatentsonline.com)
  • CTVT samples were incubated with biotinylated antibodies to specific membrane and cytoplasmic antigens (anti-lysozyme, anti-macrophage, anti-vimentin, anti-CD18, monoclonal anti-CD117, monoclonal anti-CD3, polyclonal anti-CD117, polyclonal CD3 and anti-CD79a), followed by the avidin-biotin-peroxidase complex technique. (scielo.br)
  • 2 IgM has also been proposed to be a CD7 ligand. (hcdm.org)
  • LFA-1 is not constitutively adhesive, and upregulation of the adhesive activity (avidity) of LFA-1 by external stimuli such as cytokines, chemokines, or antigens is a prerequisite for ligand binding ( 34 , 58 ). (asm.org)
  • Lymphocytes in B-CLL coexpress CD19, CD20, and CD23 pan B-cell antigens, CD5, pan T-cell antigen, and a single immunoglobulin light chain, κ or λ. (labcorp.com)
  • CD19(+) cases expressed P-gp frequently (17/25) as did CD7(+) cases (24/35). (spandidos-publications.com)
  • Our data demonstrated that expression of MDR1 and MDR3 in AML is closely associated with chromosome abnormality t(8;21) and expression of immature lymphoid antigen CD19 as well as CD7. (spandidos-publications.com)
  • 3A1E-12H7 (ref. 6T-CD7.4) was used as a CD7 reference monoclonal antibody during HLDA 6. (beckman.com)
  • The M-T701 monoclonal antibody specifically binds to CD7. (fishersci.com)
  • The following antibody was used in this experiment: CD7/C13 Antibody Cocktail, FITC, PE from Thermo Fisher Scientific, catalog # MA1-12284, RRID AB_1073331. (thermofisher.com)
  • This antibody is a monoclonal mixture of FITC-conjugated CD7 (clone MG34, isotype IgG2a) and PE-conjugated CD13 (clone E735, isotype IgG1). (thermofisher.com)
  • The MEM-186 antibody reacts with CD7, a 40 kD type I transmembrane glycoprotein expressed on peripheral blood T lymphocytes, NK-cells, hematopoietic progenitors, monocytes (weakly) and also on acute lymphocytic leukemia. (exbio.cz)
  • Mouse monoclonal antibody raised against a full length recombinant CD7. (abgent.com)
  • Each antibody is crafted with care according to rigorous protocols for immunogen design and preparation, presentation to host animal, and high-affinity purification against the antigen. (abgent.com)
  • Mouse monoclonal antibody raised against partial recombinant CD7. (abnova.com)
  • In particular, the present invention provides an anti-CD22 monoclonal antibody whose F(AB')2, particularly the scFv fragment, can target the CD22 antigen, for use in the treatment of CD22-positive cancers. (icrea.cat)
  • The increase in RFD1+ cells appeared to be due to detection of antigen by this antibody on cells that were also expressing phenotypic markers of classical tissue macrophages (RFD7). (bmj.com)
  • [ 5 ] The malignant clone frequently lacks normal T-cell antigens such as CD2, CD5, or CD7. (medscape.com)
  • Expression of CD7 may be used as aid to diagnostic in the characterization of samples from individuals suspected with hematologic neoplasia. (miltenyibiotec.com)
  • Expression of CD7, a pan T-cell antigen, is absent and is useful in distinguishing the neoplastic cells from normal T-helper cells. (labcorp.com)
  • Chabannon C, Wood P, Torok-Storb B. Expression of CD7 on normal human myeloid progenitors. (hcdm.org)
  • The CD7 antigen is a membrane-embedded glycoprotein with a molecular weight of 40 kDa. (beckman.com)
  • CD7 is a 40 kDa type I transmembrane glycoprotein that belongs to the immunoglobulin superfamily. (fishersci.com)
  • CD7 is a 40kD transmembrane, single-chain glycoprotein. (thermofisher.com)
  • CD90 (Thy 1) antigen is a GPI linked glycoprotein member of the Immunoglobulin super family. (thermofisher.com)
  • CD7 is a 40 kDa membrane-bound glycoprotein expressed on thymocytes, mature T cells, a large majority of natural killer cells, pluripotent hematopoietic stem cells, and progenitor cells of lymphoid and myeloid cells. (agilent.com)
  • CD7 is a type 1 integral glycoprotein belonging to the immunoglobulin superfamily. (hcdm.org)
  • T-PLL has the immunophenotype of a mature (post-thymic) T-lymphocyte, and the neoplastic cells are typically positive for pan-T antigens CD2, CD3, and CD7 and negative for TdT and CD1a. (wikipedia.org)
  • The Lin − CD123 + CD127 low population expresses skin-homing receptors (cutaneous lymphocyte antigen and CXCR4) and transmigrates through endothelial cells in response to SDF-1. (frontiersin.org)
  • PEBL-CAR T cells were highly cytotoxic against CD7 + leukemic cells in vitro and were consistently more potent than CD7 + T cells spared by fratricide. (nih.gov)
  • Rogers, Zhao, Jiang, Eaves, Mager, Rouhi: Expression of the leukemic prognostic marker CD7 is linked to epigenetic modifications in chronic myeloid leukemia. (antikoerper-online.de)
  • We selected CD7 as a target because of its consistent expression in T-cell acute lymphoblastic leukemia (T-ALL), including the most aggressive subtype, early T-cell precursor (ETP)-ALL. (nih.gov)
  • Diseases associated with CD7 include Pityriasis Lichenoides Et Varioliformis Acuta and T-Cell Leukemia . (genecards.org)
  • Aruffo A, Seed B: Molecular cloning of two CD7 (T-cell leukemia antigen) cDNAs by a COS cell expression system. (springer.com)
  • Chang H, Yeung J, Brandwein J, Yi QL: CD7 expression predicts poor disease free survival and post-remission survival in patients with acute myeloid leukemia and normal karyotype. (exbio.cz)
  • 1992). "c-kit gene expression in CD7-positive acute lymphoblastic leukemia: close correlation with expression of myeloid-associated antigen CD13. (thefullwiki.org)
  • T-ALL/LBL disease is defined as: Leukemia or lymphoma cells must express at least 2 of the following cell surface antigens: CD1a, CD2, CD3 (surface or cytoplasmic), CD4, CD5, CD7, and CD8. (mdanderson.org)
  • If the only T cell markers present are CD4 and CD7, the leukemia cells must also lack the myeloid markers CD33 and/or CD13. (mdanderson.org)
  • Here, we report a Lin − CD123 + CD127 low CD7 + CLA + population that share some phenotypic properties with basophils, but expresses several transcription factors for ILC commitment such as inhibitor of DNA binding 2 (Id2), NFIL3, promyelocytic leukemia zinc finger (PLZF), thymocyte selection-associated high-mobility group box protein (TOX), and T cell factor-1 (TCF-1). (frontiersin.org)
  • B- and T-cell lymphoblastic leukemia cells express surface antigens that parallel their respective lineage developments. (rexhealth.com)
  • To downregulate CD7 and control fratricide, we applied a new method (protein expression blocker [PEBL]), based on an anti-CD7 single-chain variable fragment coupled with an intracellular retention domain. (nih.gov)
  • Zusätzlich bieten wir Ihnen CD7 Proteine (20) und CD7 Kits (7) und viele weitere Produktgruppen zu diesem Protein an. (antikoerper-online.de)
  • CD7 (Cluster of Differentiation 7) is a protein that in humans is encoded by the CD7 gene. (wikipedia.org)
  • Recognizes a protein of 40 kDa, identified as CD7, a member of the immunoglobulin gene superfamily. (biotium.com)
  • Lyman SD, Escobar S, Rousseau AM, Armstrong A, Fanslow WC: Identification of CD7 as a cognate of the human K12 (SECTM1) protein. (springer.com)
  • Identification of CD7 as a cognate of the human K12 (SECTM1) protein. (hcdm.org)
  • Recombinant protein corresponding to extracellular region of human CD7. (abnova.com)
  • Flow cytometric immunophenotypic analysis shows a post-thymic immunophenotype, TdT and CD1a are negative while CD2, CD3 and CD7 (bright) are positive. (upmc.edu)
  • The CD1a CARTs continuously expanded 200-fold, similar to MOCK T-10 cells, demonstrating that redirecting CARTs against CD1a antigen does not induce T-cell fratricide. (icrea.cat)
  • Also, the use of CD1a CARTs for cortical T-ALL bypasses the need for sophisticatedgenome editingbased disruption of target antigens in T-cells prior to CAR transduction as a strategy to avoid selfantigen-driven fratricide 15-17,19. (icrea.cat)
  • C) CD7 MFI in T-ALL cells at diagnosis or relapse (D/R) and in follow-up bone marrow samples with MRD (n = 18). (nih.gov)
  • Our analysis of bone marrow samples from 50 patients with MDS showed aberrant expression of differentiation antigens in the myelomonocytic lineage. (bloodjournal.org)
  • Identification of novel B-lineage cells in human fetal bone marrow that coexpress CD7. (hcdm.org)
  • We targeted CD7 with a second-generation CAR (anti-CD7-41BB-CD3ζ), but CAR expression in T lymphocytes caused fratricide due to the presence of CD7 in the T cells themselves. (nih.gov)
  • CD7 expression persists throughout T lymphocytes differentiation defining CD7 as a pan-T marker. (beckman.com)
  • Alaibac M, Pigozzi B, Belloni-Fortina A, Michelotto A, Saponeri A, Peserico A. CD7 expression in reactive and malignant human skin T-lymphocytes. (exbio.cz)
  • CD7 is the earliest T-cell specific antigen to be expressed by lymphocytes and the only early marker to persist throughout differentiation. (agilent.com)
  • An activation antigen in human T lymphocytes. (jimmunol.org)
  • The lymphocytes in lavage fluid from patients with sarcoidosis were characterised by increased expression of activation markers, such as interleukin-2 receptors (anti-Tac+), HLA-DR (RFDR+), and "blast" forms (expressing above normal concentrations of CD7 antigen). (bmj.com)
  • Patients with sarcoidosis whose clinical indices suggested activity showed an increased number of macrophages coexpressing RFD1 and RFD7 antigens, of macrophages expressing UCHM1 and lymphocytes expressing activation markers. (bmj.com)
  • To become immunologically competent they must generate functional antigen receptors. (diva-portal.org)
  • Extrathymic expression of the intracellular hepatitis B core antigen results in T cell tolerance in transgenic mice. (jimmunol.org)
  • A) The percentage of ALL cells expressing CD7 at. (nih.gov)
  • D) Flow cytometric contour plots illustrate CD7 expression in T-ALL cells (CD3 negative) and normal T cells (CD3 positive) at diagnosis, MRD, and relapse in 1 representative patient. (nih.gov)
  • CD7 expression is also detected on pluripotent hematopoietic stem cells. (beckman.com)
  • CD7 is present in reduced density on monocytic cells and cell lines. (fishersci.com)
  • Functional studies demonstrate that crosslinking of the CD7 can induce transmembrane calcium flux in T cells. (fishersci.com)
  • Pan-T antigens are antigens found on all T cells. (wikipedia.org)
  • CD7 is expressed by majority of peripheral blood T cells, NK cells and all Thymocytes. (thermofisher.com)
  • Thus an increase in CD7 negative T cells can be seen in some inflammatory skin disease. (thermofisher.com)
  • CD7 appears early in T cell ontogeny and is expressed by most T cells in the periphery. (miltenyibiotec.com)
  • Furthermore, it has been reported that the β-galactoside-binding lectin galectin-1 binds CD7, leading to induction of apoptosis of thymocytes and T cells, with implications for certain autoimmune diseases and T cell lymphomas. (miltenyibiotec.com)
  • Abnormal numbers of cells expressing this antigen or aberrant expression levels of the antigen can be expected in some disease states. (miltenyibiotec.com)
  • CD7 also was knocked out of the engineered T-cells so the CAR-T cells wouldn't attack each other - a process known as fratricide. (xconomy.com)
  • The current case is unique in its extremely late onset of 17 years and in that two distinct components of lymphoma with different morphology and immunophenotypes coexist in the same isolated location with the conventional diffuse large B-cell lymphoma portion being EBV negative while the anaplastic looking component which expresses T-cells antigens is EBV positive. (hindawi.com)
  • Malignancies of the immune system are primarily represented by the malignant lymphomas and a smaller number of nonlymphoid neoplasms that originate from cells involved in antigen presentation and processing. (asmscience.org)
  • The circulating malignant cells tend to be CD7 and CD26 negative. (medscape.com)
  • CD7 is associated with CD3 and CD45 on human T cells. (hcdm.org)
  • The choice of the antigen against which we wish to re-direct T-cells represents a major advance to solve the problems associated with the shared expression of T-cell markers between normal and malignant T-cells. (icrea.cat)
  • Patients with sarcoidosis had a higher percentage than the normal subjects of macrophage like cells expressing RFD1 (a class II associated antigen preferentially expressed by dendritic cells), an epithelioid cell antigen (RFD9), and a circulating monocyte antigen (UCHMI). (bmj.com)
  • Although IHC is not commonly necessary in differentiation, epithelial membrane antigen (EMA) highlights most mature sebocytes in sebaceoma, whereas its expression is uncommon in BCC. (thefreelibrary.com)
  • Epithelial membrane antigen-1 (EMA) is commonly expressed on ALCL but not expressed in PMLBCL or Hodgkin lymphoma. (renalandurologynews.com)
  • CD7 activates phosphatidylinositol 3-kinase which is involved in CD7-mediated regulation of integrin adhesiveness. (miltenyibiotec.com)
  • those predicting shorter EFS were a chromosomal status other than normal (P=0.002) and detection of CD14 antigen (P=0.008). (curehunter.com)
  • In addition, the capabilities of flow cytometry to assess cell properties/constituents can be utilized in detailed analysis of adhesion molecules and activation antigen which may lead to better prediction of the prognosis of this group of lymphomas, and may provide further important data for the therapeutic decision making process. (biomedsearch.com)
  • The presence or absence of CD7 is a useful marker for the classification of T- and NK-cell malignancies. (thermofisher.com)
  • These next-generation approaches attempt to address issues such as CAR-T cell persistence, loss of response due to antigen escape, the lack of T-cell therapies for solid tumors and the weeks-long manufacturing required for autologous products. (xconomy.com)
  • Previous studies have demonstrated a role for CD7 in T- and NK-cell activation and cytokine production. (springer.com)
  • Jung LK, Roy AK, Chakkalath HR: CD7 augments T cell proliferation via the interleukin-2 autocrine pathway. (springer.com)
  • Sempowski GD, Cross SJ, Heinly CS, Scearce RM, Haynes BF: CD7 and CD28 are required for murine CD4(+)CD25(+) regulatory T cell homeostasis and prevention of thyroiditis. (springer.com)
  • Immunophenotyping, in the majority of cases, demonstrates expression of CD3 (a pan T-cell antigen), and CD4 (the helper cell antigen). (labcorp.com)
  • CD8 (the suppressor/cytotoxic cell antigen) is usually not expressed. (labcorp.com)
  • The more common T-cell type expresses CD3, a pan T-cell antigen and CD8, the suppressor/cytotoxic cell antigen. (labcorp.com)
  • A total or partial lack of other T-cell antigens, such as CD2, CD5 and CD7, can be observed (3-4). (scielo.br)
  • It is also well known that LFA-1/ICAM-1-mediated adhesion establishes and strengthens the T-cell-antigen-presenting cell (APC) contact, which is a critical event for T-cell activation ( 14 , 51 , 69 ). (asm.org)
  • Expression of one or more pan-T-cell antigens (CD45RO, CD2, CD3, CD5, and CD7), absence of pan-B-cell antigens, and histopathologic findings combine to make the diagnosis ( 8 ). (aacrjournals.org)
  • Definition of cell immunophenotype in acute leukemias is commonly employed to identify malignant line, maturation stage and finally pattern of antigen expression in individual patients what permits better monitoring of treatment and residual disease. (termedia.pl)
  • Although CD7 is expressed intrathymically, it is not known if K12 is produced in human thymus. (springer.com)
  • Comparison of thymocyte development and cytokine production in CD7-deficient, CD28-deficient and CD7/CD28 double-deficient mice. (springer.com)