Antigens cd70. Medical search

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).

CD28-independent costimulation of T cells by OX40 ligand and CD70 on activated B cells. (1/159)

OX40 and its ligand (OX40L) have been implicated in T cell-dependent humoral immune responses. To further characterize the role of OX40/OX40L in T-B cell interaction, we newly generated an anti-mouse OX40L mAb (RM134L) that can inhibit the costimulatory activity of OX40L transfectants for anti-CD3-stimulated T cell proliferation. Flow cytometric analyses using RM134L and an anti-mouse OX40 mAb indicated that OX40 was inducible on splenic T cells by stimulation with immobilized anti-CD3 mAb in a CD28-independent manner, while OX40L was not expressed on resting or activated T cells. OX40L was inducible on splenic B cells by stimulation with anti-IgM Ab plus anti-CD40 mAb, but not by either alone. These activated B cells exhibited a potent costimulatory activity for anti-CD3-stimulated T cell proliferation and IL-2 production. Anti-CD80 and anti-CD86 mAbs partially inhibited the costimulatory activity, and further inhibition was obtained by their combination with RM134L and/or anti-CD70 mAb. We also found the anti-IgM Ab- plus anti-CD40 mAb-stimulated B cells exhibited a potent costimulatory activity for proliferation of and IL-2 production by anti-CD3-stimulated CD28- T cells from CD28-deficient mice, which was substantially inhibited by RM134L and/or anti-CD70 mAb. These results indicated that OX40L and CD70 expressed on surface Ig- and CD40-stimulated B cells can provide CD28-independent costimulatory signals to T cells. (+info)

Constitutive expression and role of the TNF family ligands in apoptotic killing of tumor cells by human NK cells. (2/159)

Natural killer cells mediate spontaneously secretory/necrotic killing against rare leukemia cell lines and a nonsecretory/apoptotic killing against a large variety of tumor cell lines. The molecules involved in nonsecretory/apoptotic killing are largely undefined. In the present study, freshly isolated, nonactivated, human NK cells were shown to express TNF, lymphotoxin (LT)-alpha, LT-beta, Fas ligand (L), CD27L, CD30L, OX40L, 4-1BBL, and TNF-related apoptosis-inducing ligand (TRAIL), but not CD40L or nerve growth factor. Complementary receptors were demonstrated to be expressed on the cell surface of solid tumor cell lines susceptible to apoptotic killing mediated by NK cells. Individually applied, antagonists of TNF, LT-alpha1beta2, or FasL fully inhibited NK cell-mediated apoptotic killing of tumor cells. On the other hand, recombinant TNF, LT-alpha1beta2, or FasL applied individually or as pairs were not cytotoxic. In contrast, a mixture of the three ligands mediated significant apoptosis in tumor cells. These findings demonstrate that human NK cells constitutively express several of the TNF family ligands and induce apoptosis in tumor cells by simultaneous engagement of at least three of these cytotoxic molecules. (+info)

Critical contribution of OX40 ligand to T helper cell type 2 differentiation in experimental leishmaniasis. (3/159)

Infection of inbred mouse strains with Leishmania major is a well characterized model for analysis of T helper (Th)1 and Th2 cell development in vivo. In this study, to address the role of costimulatory molecules CD27, CD30, 4-1BB, and OX40, which belong to the tumor necrosis factor receptor superfamily, in the development of Th1 and Th2 cells in vivo, we administered monoclonal antibody (mAb) against their ligands, CD70, CD30 ligand (L), 4-1BBL, and OX40L, to mice infected with L. major. Whereas anti-CD70, anti-CD30L, and anti-4-1BBL mAb exhibited no effect in either susceptible BALB/c or resistant C57BL/6 mice, the administration of anti-OX40L mAb abrogated progressive disease in BALB/c mice. Flow cytometric analysis indicated that OX40 was expressed on CD4(+) T cells and OX40L was expressed on CD11c(+) dendritic cells in the popliteal lymph nodes of L. major-infected BALB/c mice. In vitro stimulation of these CD4(+) T cells showed that anti-OX40L mAb treatment resulted in substantially reduced production of Th2 cytokines. Moreover, this change in cytokine levels was associated with reduced levels of anti-L. major immunoglobulin (Ig)G1 and serum IgE. These results indicate that anti-OX40L mAb abrogated progressive leishmaniasis in BALB/c mice by suppressing the development of Th2 responses, substantiating a critical role of OX40-OX40L interaction in Th2 development in vivo. (+info)

CD27-mediated activation of murine NK cells. (4/159)

CD27, a member of the TNF receptor superfamily, has been implicated in T cell activation, T cell development, and T cell-dependent Ab production by B cells. In the present study we examined the expression and function of CD27 on murine NK cells. Murine NK cells constitutively expressed CD27 on their surface. Stimulation with immobilized anti-CD27 mAb or murine CD27 ligand (CD70) transfectans solely could induce proliferation and IFN-gamma production of freshly isolated NK cells and enhanced the proliferation and IFN-gamma production of anti-NK1.1-sutimulated NK cells. Although NK cell cytotoxicity was not triggered by anti-CD27 mAb or against CD70 transfectants, prestimulation via CD27 enhanced the cytotoxic activity of NK cells in an IFN-gamma-dependent manner. These results suggest that CD27-mediated activation may be involved in the NK cell-mediated innate immunity against virus-infected or transformed cells expressing CD70. (+info)

CD134L engagement enhances human B cell Ig production: CD154/CD40, CD70/CD27, and CD134/CD134L interactions coordinately regulate T cell-dependent B cell responses. (5/159)

CD134 is a member of the TNFR family expressed on activated T cells, whose ligand, CD134L, is found preferentially on activated B cells. We have previously reported that the CD70/CD27 interaction may be more important in the induction of plasma cell differentiation after the expansion phase induced by the CD154/CD40 interaction has occurred. When CD134-transfected cells were added to PBMCs stimulated with pokeweed mitogen, IgG production was enhanced in a dose-dependent fashion. Addition of CD134-transfected cells to B cells stimulated with Staphylococcus aureus Cowan I strain/IL-2 resulted in little if any enhancement of B cell IgG production and proliferation. We found that while CD134-transfected cells induced no IgG production by themselves, it greatly enhanced IgG production in the presence of CD40 stimulation or T cell cytokines such as IL-4 and IL-10. The addition of CD134-transfected cells showed only a slight increase in the number of plasma cells compared with that in the culture without them, indicating that an increased Ig production rate per cell is responsible for the observed enhancing effect of CD134L engagement rather than increase in plasma cell generation. These results strongly suggest different and sequential roles of the TNF/TNFR family molecules in human T cell-dependent B cell responses through cell-cell contacts and the cytokine network. (+info)

Apoptosis in coxsackievirus B3-caused diseases: interaction between the capsid protein VP2 and the proapoptotic protein siva. (6/159)

Coxsackievirus B3 (CVB3) is a common factor in human myocarditis. Apoptotic events are present in CVB3-induced disease, but it is unclear how CVB3 is involved in apoptosis and which viral proteins may induce the apoptotic pathway. In this report we demonstrate that the human and murine proapoptotic protein Siva specifically interact with the CVB3 capsid protein VP2. Furthermore, the transcription of Siva is strongly induced in tissue of CVB3-infected mice and is present in the same area which is positively stained for apoptosis, CD27, and CD70. It has been proposed that Siva is involved in the CD27/CD70-transduced apoptosis. Therefore, we suggest a molecular mechanism through which apoptotic events contributes to CVB3-caused pathogenesis. (+info)

The expression of CD70 and CD80 by gene-modified tumor cells induces an antitumor response depending on the MHC status. (7/159)

The expression of costimulatory molecules such as CD70 or CD80 by gene-modified tumor cells has been shown to enhance the antitumor immune response based mainly on T lymphocytes. However, most human tumors show defects of major histocompatibility complex (MHC) expression, preventing them from being recognized by MHC-restricted T cells. To investigate if coexpression of CD70 and CD80 costimulatory molecules induces comparable antitumor responses in low and high MHC-expressing tumor cells, we used two low immunogenic murine tumor models, the B16.F10 melanoma and the TS/A mammary adenocarcinoma cell lines expressing, respectively, low and high levels of MHC class I molecules. Transfection of both CD70 and CD80 genes resulted in an increased capacity of gene-modified tumor cells to costimulate in vitro the proliferation and cytokine production of optimally activated lymphoid cells. Coexpression of CD70 and CD80 by the two tumor cell lines, TS/A and B16.F10, resulted in both cases in partial regression of subcutaneous tumors. Immunochemical analysis and studies in nude mice showed that, even in the B16.F10 model, T cells had a significant role in the antitumor response induced by combining CD70 and CD80. However, rejection of the CD70/CD80-transfected tumor cells appeared more effective in the MHC class I high TS/A model, leading to a protection against parental tumor cells. B16.F10 and TS/A transfectants were then tested with fibroblasts genetically modified to secrete interleukin-12 (IL-12) as a therapeutic vaccine in mice bearing parental tumors. In the two models tested, the injections of irradiated IL-12 and CD70/CD80 gene-modified cells generated an antitumor response to established tumors leading to the slowing down of the tumor growth rate. Although the mechanisms remain to be defined, these findings suggest that the combination of several immuno-modulatory molecules could provide additional strategies for cancer immuno-gene therapy, even for MHC expression-deficient tumors. (+info)

Enhancement of adenovirus vector entry into CD70-positive B-cell Lines by using a bispecific CD70-adenovirus fiber antibody. (8/159)

Although many recombinant adenovirus vectors (rAd) have been developed, especially by using group C adenoviruses, to transfer and express genes, such rAd do not readily infect B-cell lines due to the lack of the coxsackievirus-adenovirus receptor. Bispecific antibodies have been used in different cell systems to facilitate entry of rAd into otherwise nonpermissive cells. Bispecific antibody is synthesized by covalently linking two monoclonal antibodies with distinct specificities. It has been shown that lymphoproliferative tumors commonly express the cell surface protein CD70, while this receptor is normally expressed on only a small subset of highly activated B cells and T cells. We therefore investigated whether a bispecific antibody with specificities for the adenovirus fiber protein and CD70 can facilitate rAd entry and subsequent expression of rAd-encoded genes in CD70-positive B cells. We found high CD70 expression on Epstein-Barr virus (EBV)-transformed lymphoblastoid cell lines (LCLs), as well as some, but not all, Burkitt lymphoma (BL) lines. We show here that rAd encoding green fluorescent protein (Ad-GFP) infects EBV-transformed LCLs and a CD70-positive BL line 10- to 20-fold more efficiently in the presence of the CD70-fiber bispecific antibody. In contrast, the bispecific antibody does not enhance Ad-GFP infection in CD70-deficient BL cells. Using the CD70-fiber bispecific antibody, we increased the ability of rAd vectors encoding the EBV immediate-early proteins BZLF1 and BRLF1 to induce the lytic form of EBV infection in LCLs. These results indicate that the CD70-fiber bispecific antibody can enhance rAd infection of CD70-positive B cells and suggest the use of this vector to explore EBV-positive LCLs. (+info)

Borst J, Hendriks J, Xiao Y (June 2005). "CD27 and CD70 in T cell and B cell activation". Current Opinion in Immunology. 17 (3 ... CD27: This molecule supports antigen-specific expansion of naïve T cells and is vital for the generation of T cell memory. CD27 ... The ligand for GITR is mainly expressed on antigen presenting cells. Antibodies to GITR have been shown to promote an anti- ... CD40: This molecule, found on a variety of immune system cells including antigen presenting cells has CD40L, otherwise known as ...

https://en.wikipedia.org/wiki/Immune_checkpoint

... s do not express immunoglobulins and are unable to respond to the follicular dendritic cell antigens present in the ... However, they are able to promote the secretion of immunoglobulins though CD27/CD70 interactions. B cells begin expressing CD27 ... allowing the B cell receptor to potentially gain stronger affinity for an antigen. In the absence of FDC and helper T cell ...

https://en.wikipedia.org/wiki/Centroblast

Seattle Genetics Third Quarter 2013 Financial Report[permanent dead link] CD70+Antigens at the US National Library of Medicine ... CD70 (Cluster of Differentiation 70) is a protein that in humans is encoded by CD70 gene. CD70 is a ligand for CD27. The CD70 ... that anti-CD70 antibodies might be a possible treatment for CD70 positive lymphomas as normal lymphocytes have low CD70 ... Cluster of differentiation "NCBI". Israel BF, Gulley M, Elmore S, Ferrini S, Feng WH, Kenney SC (2005). "Anti-CD70 antibodies: ...

https://en.wikipedia.org/wiki/CD70

Borst, Jannie; Hendriks, Jenny; Xiao, Yanling (June 2005). "CD27 and CD70 in T cell and B cell activation". Current Opinion in ... that recognizes a common epitope on the human T cell receptor for antigen". Journal of Immunology. 135 (3): 1922-1928. ISSN ... The identification of TNF receptor CD27 and CD70 ligand as important costimulatory system on T cells LUMC. "Prof. Jannie Borst ... Church, J. A. (2004-08-01). "Lethal T Cell Immunodeficiency Induced by Chronic Costimulation via CD27-CD70 Interactions". ...

https://en.wikipedia.org/wiki/Jannie_Borst

B1b cells seem to recognize more types of antigens including intracellular antigens. Previously, B1b cell antigen recognition ... Human B1 cells have been found to have marker profile of CD20+CD27+CD43+CD70- and could either be CD5+ or CD5-, which has been ... making antibodies against antigens and acting as antigen-presenting cells. These B1 cells are commonly found in peripheral ... Hence, there appears to be a role for self or foreign antigen in shaping the repertoire of the B-1 B cell compartment. B1 cells ...

https://en.wikipedia.org/wiki/B1_cell

CD70. In normal lymphoid tissues CD27 and its ligand CD70 have a restricted expression pattern, but a 1999 study found CD70 on ... B-cells that have not encountered an antigen are called naive B cells. When naïve B-cells encounter an antigen, one of the ... that bind to a specific antigen. Once activated by an antigen, B-cells proliferate and further differentiate into plasma cells ... Follicular dendritic cells and T cells help to select the B-cells that have a high affinity to the antigen for further ...

https://en.wikipedia.org/wiki/Germinal_center_B-cell_like_diffuse_large_B-cell_lymphoma

"PLCE1 is a poor prognostic marker and may promote immune escape from osteosarcoma by the CD70-CD27 signaling pathway". Bosnian ... "Human immunodeficiency virus-1 glycoproteins gp120 and gp160 specifically inhibit the CD3/T cell-antigen receptor ...

https://en.wikipedia.org/wiki/PLCE1

When CD27 binds CD70, a signaling cascade leads to the differentiation and clonal expansion of T cells. The cascade also ... CD27+Antigens at the US National Library of Medicine Medical Subject Headings (MeSH) Human CD27 genome location and CD27 gene ... Lens SM, de Jong R, Hintzen RQ, Koopman G, van Lier RA, van Oers RH (June 1995). "CD27-CD70 interaction: unravelling its ... It binds to ligand CD70, and plays a key role in regulating B-cell activation and immunoglobulin synthesis. ...

https://en.wikipedia.org/wiki/CD27

... pathway induced by the CD27 antigen, a member of the tumor necrosis factor receptor (TFNR) superfamily. The CD27 antigen ... Held-Feindt J, Mentlein R (2002). "CD70/CD27 ligand, a member of the TNF family, is expressed in human brain tumors". Int. J. ...

https://en.wikipedia.org/wiki/SIVA1

Shulzhenko N, Morgun A, Chinellato AP, Rampim GF, Diniz RV, Almeida DR, Gerbase-DeLima M (March 2002). "CD27 but not CD70 and 4 ... Although it is thought to function mainly in co-stimulating those cell types to support their activation by antigen presenting ... November 2008). "Rapid identification and sorting of viable virus-reactive CD4(+) and CD8(+) T cells based on antigen-triggered ...

https://en.wikipedia.org/wiki/CD137

OX40L is the ligand for OX40 (also known as CD134 or TNFRSF4) and is stably expressed on many antigen-presenting cells such as ... CD70, and 4-1BBL on dendritic cells". Blood. 113 (11): 2451-60. doi:10.1182/blood-2008-05-157123. PMID 19029446. S2CID 43707862 ...

https://en.wikipedia.org/wiki/OX40_ligand

CD70 is expressed on activated T, B and NK cells, activated plasmacytoid dendritic cells (pDCs), and chronic B cell lymphocytic ... CD70, also known as CD27L, is a 50 kD type II transmembrane glycoprotein and member of the tumor necrosis factor superfamily. ... Antigen References 1. Bowman MR, et al. 1994. J. Immunol. 152:1756.. 2. Shaw J, et al. 2010. Blood 115:3051.. 3. Keller AM, et ... CD70-transfected L cells Formulation Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and 1 mM EDTA. ...

https://www.biolegend.com/nl-be/products/totalseq-c0027-anti-human-cd70-antibody-17345

CD27 Ligand, also known as CD70 and TNFSF7, is a type II transmembrane glycoprotein belonging to the TNF superfamily (TNFSF). ... CD27 Ligand expression is induced by antigen-receptor activation in B cells. CD27/TNFRSF7 is expressed on natural killer (NK) ...

https://www.rndsystems.com/target/cd27-ligand-tnfsf7

Antigens, CD30 D23.101.840.55 D23.101.140.55 Antigens, CD70 D12.644.276.972.30 D12.776.467.972.30 D23.529.972.30 Antigens, Thy- ... CA-125 Antigen D23.101.840.75.225 D23.101.140.75.225 CA-19-9 Antigen D23.101.840.75.119 D23.101.140.75.119 Calcium Hydroxide ... Antigens, CD15 D23.101.840.75.50 D23.101.140.75.50 Antigens, CD29 D23.50.301.264.129 D23.101.100.129 ... Proliferating Cell Nuclear Antigen D23.101.840.600 D23.101.140.600 Proline-Rich Protein Domains G2.111.570.790.709.600.40.752 ...

https://decs.bvs.br/P/mnchg2016.txt

Antigens, CD70. CD27 Ligand. Antigens, CD79. CD79 Antigens. Antigens, CD80. B7-1 Antigen. ... Antigens, CD98 Heavy Chain. Fusion Regulatory Protein 1, Heavy Chain. Antigens, CD98 Light Chains. Fusion Regulatory Protein 1 ... Antigen Peptide Transporter-1. ATP-Binding Cassette Sub-Family B Member 2. ... Antigen Peptide Transporter-2. ATP-Binding Cassette, Sub-Family B, Member 3. ...

https://decs2020.bvsalud.org/I/rep_i2018.htm

https://decs2019.bvsalud.org/I/rep_i2018.htm

https://decs.bvsalud.org/I/rep_i2018.htm

https://decs2018.bvsalud.org/I/rep_i2018.htm

Jiang J, Wang X, Wang X, Cao Z, Liu Y, Dong M, Tong A, Cheng X. Reduced CD27 expression on antigen-specific CD4+ T cells ... CD27-CD70. To avoid over-reactivation, effector T cell response also require suppression signals generated upon co-inhibitory ... BTLA-expressing CD11c antigen presenting cells in patients with active tuberculosis exhibit low capacity to stimulate T cell ... CD5 instructs extrathymic regulatory T cell development in response to self and tolerizing antigens. Immunity. 2015;42(3):471- ...

https://bmcinfectdis.biomedcentral.com/articles/10.1186/s12879-022-07506-z

Observation of antigen-dependent CD8+ T-cell/ dendritic cell interactions in vivo. Cell Immunol 2001;214:110-22. doi:10.1006/ ... also known as CD70, is a costimulatory molecule that is constitutively expressed by gut-resident APCs.31 ,32 Thus, we ... CD70+ antigen-presenting cells control the proliferation and differentiation of T cells in the intestinal mucosa. Nat Immunol ... Secreted products, such as antigens34 and metabolites,22 ,35 ,36 by gut commensal bacteria are key contributors to the ...

https://gut.bmj.com/content/67/5/847

Lymphocyte antigen CD70 (substance). Code System Preferred Concept Name. Lymphocyte antigen CD70 (substance). ...

https://phinvads.cdc.gov/vads/ViewCodeSystemConcept.action?oid=2.16.840.1.113883.6.96&code=35092000

Antigens, CD70. 1. + 309. Chemokines, C. 1. + 310. Pyridones. 1. + 311. Quinones. 1. + ...

https://lookfordiagnosis.com/results.php?symptoms=Melanoma%3B%20Malignant%20Melanoma&lang=1&parent=%2F&mode=F&therapy_ap=1

Novel Immunotherapy for Cancer Treatment: Chimeric Antigen Receptors Targeting CD70 Antigen. The National Cancer Institutes ... Surgery Branch seeks partners interested in licensing or co-developing chimeric antigen receptors targeting CD70 antigen for ... Chimeric Antigen Receptors that Recognize Mesothelin for Cancer Immunotherapy. Researchers at the NCI have developed chimeric ... T cell receptors (TCRs) are proteins that recognize antigens in the context of infected or transformed cells and activate T ...

https://techtransfer.cancer.gov/availabletechnologies/all?f%5B0%5D=field_product_type%3A3&f%5B1%5D=field_product_type%3A1&f%5B2%5D=field_therapeutic_area%3A17&%3Bf%5B1%5D=field_therapeutic_area%3A20&%3Babstract_sort=changed%20ASC&abstract_sort=changed%20DESC

We generated CD70 knocked-out novel nanobody-based anti-CD70-CAR T-cells (nb70CAR-T) with two different VHHs for antigen ... CD70 was reported as a promising AML-specific antigen. Preclinically, CAR T-cell with single-chain-variable fragment (scFv) or ... However, CD70 expression in primary AML blasts was not consistently high and nb70CAR-T potently respond to an estimated 40.4% ... the CD70 expression on primary AML blasts by flow cytometry and associated the efficacy of nb70CAR-T with the target antigen ...

https://pesquisa.bvsalud.org/portal/?lang=pt&q=au:Zhou,+Jianfeng

Cd70. CD70 antigen. 0.012. Hmbs. hydroxymethylbilane synthase. 0.012. Zrsr1. zinc finger (CCCH type), RNA binding motif and ...

http://imp.princeton.edu/predictions/process/mouse-context-global/7590/?gene=76144

CD70. CD70 antigen. U: 1. CDK5R1. cyclin-dependent kinase 5, regulatory subunit 1 (p35). U: 2 ...

https://senequest.net/search?type=go_term&search=protease%20binding

These data indicate that CD70 represents a potential target antigen for toxin-conjugated therapeutic antibody treatment of RCC. ... Immunohistochemical analysis of CD70 expression in multiple carcinoma types demonstrated strong CD70 staining in RCC tissues. ... Immunocytochemical analysis demonstrated that binding of an anti-CD70 antibody to CD70 endogenously expressed on the surface of ... One unusual protein identified at high levels in A498 and 786-O cells was CD70 (TNFSF7), a type II transmembrane receptor ...

https://www.oncology.ox.ac.uk/publications/119051

... one targeting the CD70 tumor antigen and the other target to be determined. In addition, the companies will bring together ... or CD70, an antigen expressed on various solid tumors and hematologic malignancies. CTX130 is being developed for the treatment ... CRISPR Therapeutics has begun dosing patients in the pivotal trial of CTX110, its wholly-owned allogeneic chimeric antigen ... its wholly-owned allogeneic CAR-T investigational therapy targeting B-cell maturation antigen for the treatment of relapsed or ...

https://crisprtx.com/about-us/press-releases-and-presentations/crispr-therapeutics-provides-business-update-and-reports-fourth-quarter-and-full-year-2021-financial-results

... including but not limited to antibodies or antigen binding fragments thereof that specifically bind to an antigen selected from ... CD70, OX-40, 4-1BB, and ICOS). The additional therapeutic agent can be selected from the group consisting of STING agonists, ... Antigen binding portions include, for example, Fab, Fab, F(ab)2, Fd, Fv, fragments including CDRs, and single chain variable ... Purification of antigen is not necessary for the generation of antibodies. Animals can be immunized with cells bearing the ...

https://www.sumobrain.com/patents/wipo/Dosing-regimens-anti-ilt4-antibody/WO2022060767A1.html

Tissue section of human prostate containing adenocarcinoma that has been immunostained for the cell-surface antigen CD70. ... Tissue section of human prostate containing adenocarcinoma that has been immunostained for the cell-surface antigen CD90. ... Tissue section of human prostate containing adenocarcinoma that has been immunostained for the cell-surface antigen CD73. ... Tissue section of human prostate containing adenocarcinoma that has been immunostained for the cell-surface antigen CD75s. ...

http://flagella.crbs.ucsd.edu/images?image_search_parms%5Bcellular_component%5D=cell%20surface&advanced_search=Advanced+Search&per_page=10&page=2&per_page=10&page=5&per_page=10&page=3&per_page=10&page=9&per_page=10&page=138&per_page=10&page=134&per_page=10&page=136

Antigen Presentation, Antigens, C-Type, C-type lectin, cancer, CD70, CD8-Positive T-Lymphocytes, CD8+ T cells, CD8+ T‐cell ... keywords = {Animals, Antibodies, antibody, Antigen, Antigen Presentation, ANTIGEN PRESENTING CELLS, Antigen-Presenting Cells, ... Antigen Presentation, ANTIGEN PRESENTING CELLS, Antigen-Presenting Cells, Antigens, BASEMENT MEMBRANE, C-Type, C-type lectin, ... keywords = {agonists, Animals, Antibodies, antibody, Antigen, Antigen Presentation, Antigens, C-Type, C-type lectin, cancer, ...

https://ibmc.cnrs.fr/en/laboratoire/other-platforms-and-technical-platforms/equipes/imaging/publications/?tgid=8903

D12.776.543.750.705.222.500 Antigens, CD70 D12.776.543.550.172 D12.776.543.550.170 Antigens, CD8 D23.50.301.264.35.108 Antigens ... E5.478.594.49 Antigens, CD147 D12.776.543.550.188 D12.776.543.550.187 Antigens, CD28 D12.776.543.750.705.816.824.133 ... D23.529.168.100 Antigens, CD86 D12.776.395.550.17 D12.776.467.150.200 D12.776.543.550.186 D12.776.543.95.200 D23.50.301.264. ... A1.923.47.365 H-2 Antigens D23.50.301.500.400.350 D23.50.301.500.100.350 D23.50.705.552.400.350 D23.50.301.500.400.199 D23.50. ...

https://decs2017.bvsalud.org/E/mnchg2012.txt

https://decs2015.bvsalud.org/E/mnchg2012.txt

https://decs2016.bvsalud.org/E/mnchg2016.txt

https://decs2013.bvsalud.org/P/mnchg2012.txt

https://decs2014.bvsalud.org/I/mnchg2012.txt

https://decs2012.bvsalud.org/P/mnchg2012.txt

A novel chimeric antigen receptor T-cell therapy targeting CD70 showed encouraging activity in a small group of pat… https://t. ...

https://gcgglobalhealthcare.com/tag/health-management-organisations/

AE, adverse events; CBR, clinical benefit rate; CTLA-4, cytotoxic T-lymphocyte antigen 4; GM-CSF, granulocyte-macrophage colony ... CD70. ARGX-110. [53]. 0.1, 1, 5, 10 mg/kg Q3W. Advanced solid and hematologic tumors. Phase I. DLT. N/A. Ongoing. ... AE, adverse event; ALT, alanine aminotransferase; AST, aspartate aminotransferase; CTLA-4, cytotoxic T-lymphocyte antigen 4; PD ... cytotoxic T-lymphocyte antigen 4; DLBCL, diffuse large B-cell lymphoma; DLT, dose-limiting toxicity; FDA, US Food and Drug ...

https://www.medscape.com/viewarticle/879051

METHODS: Monocyte-derived dendritic cells electroporated with mRNA encoding CD70, CD40 ligand, and constitutively active TLR4 ( ... TriMix and tumor antigen mRNA electroporated dendritic cell vaccination plus ipilimumab: link between T-cell activation and ... We evaluated tumor-associated antigen specific T-cell responses in previously collected peripheral blood mononuclear cells, ... TriMix) as well as the tumor-associated antigens tyrosinase, gp100, MAGE-A3, or MAGE-C2 were administered together with IPI for ...

https://www.iozk.de/2020/02/trimix-and-tumor-antigen-mrna-electroporated-dendritic-cell-vaccination-plus-ipilimumab-link-between-t-cell-activation-and-clinical-responses-in-advanced-melanoma/

UF Health researchers have found a way to target a molecule, known as CD70, found on the surface of glioblastoma tumors, that ... Receptors on the T-cells surface bind to a specific protein on glioblastoma cells, a process called chimeric antigen receptor ... can be extracted from a patient and genetically reprogrammed to recognize and attack glioblastoma tumors that feature CD70. ...

https://cares.cancer.ufl.edu/2019/09/18/uf-cancer-research-in-the-news/

The National Cancer Institute's Surgery Branch seeks partners interested in licensing or co-developing chimeric antigen receptors targeting CD70 antigen for the treatment of cancer. (cancer.gov)
Researchers at the NCI have developed chimeric antigen receptors (CARs) with a high affinity for mesothelin to be used as an immunotherapy to treat pancreatic cancer, ovarian cancer, and mesothelioma. (cancer.gov)
CRISPR Therapeutics has begun dosing patients in the pivotal trial of CTX110, its wholly-owned allogeneic chimeric antigen receptor T cell (CAR-T) investigational therapy targeting CD19+ B-cell malignancies. (crisprtx.com)
Receptors on the T-cell's surface bind to a specific protein on glioblastoma cells, a process called chimeric antigen receptor T-cell, or CAR-T cell, therapy. (ufl.edu)
Allogene Therapeutics , with headquarters in South San Francisco, is a clinical-stage biotechnology company pioneering the development of allogeneic chimeric antigen receptor T cell (AlloCAR T™) therapies for cancer. (allogene.com)

CD27 Ligand expression is induced by antigen-receptor activation in B cells. (rndsystems.com)
Receptor-ligand interaction is required for the transduction of second signal, following the first signal conveyed by the interaction of MHC molecules on APCs and T cell receptors on effector T cells loaded with cognate antigens [ 3 ]. (biomedcentral.com)
Co-stimulatory receptor-ligand interactions that help amplify effector T cell responses include CD28-CD80, 4-1BB (also known as CD137)-4-1BB ligand, CD27-CD70. (biomedcentral.com)
One unusual protein identified at high levels in A498 and 786-O cells was CD70 (TNFSF7), a type II transmembrane receptor normally expressed on a subset of B, T and NK cells, where it plays a costimulatory role in immune cell activation. (ox.ac.uk)
Immunocytochemical analysis demonstrated that binding of an anti-CD70 antibody to CD70 endogenously expressed on the surface of A498 and 786-O cell lines resulted in the rapid internalisation of the antibody-receptor complex. (ox.ac.uk)
A KIR receptor that has specificity for HLA-C ANTIGENS. (wakehealth.edu)

T cell receptors (TCRs) are proteins that recognize antigens in the context of infected or transformed cells and activate T cells to mediate an immune response and destroy abnormal cells. (cancer.gov)
The National Cancer Institute's Surgery Branch seeks interested parties to license or co-develop the use of T cell receptors (TCRs) cloned against the SSX-2 antigen for the treatment of cancer. (cancer.gov)

CD27 Ligand, also known as CD70 and TNFSF7, is a type II transmembrane glycoprotein belonging to the TNF superfamily (TNFSF). (rndsystems.com)

CD70 costimulates T cell proliferation and differentiation. (biolegend.com)
CD27 binds to CD70 and plays an important role in costimulation of T cell activation, and regulation of B cell differentiation and proliferation. (biolegend.com)
A group of differentiation surface antigens, among the first to be discovered on thymocytes and T-lymphocytes. (rush.edu)

Over the past 20 years, extensive research has been performed to understand the role of various components of peripheral immune tolerance, with the co-inhibitory immune checkpoint molecules cytotoxic T-lymphocyte antigen 4 (CTLA-4), programmed death 1 (PD-1), and its ligand (PD-L1) being the most well-characterized at preclinical and clinical levels. (medscape.com)
A current focus is the CD70 surface protein that is critical for cytotoxic T lymphocyte activity. (boun.edu.tr)

CD70 (TNFSF7) is expressed at high prevalence in renal cell carcinomas and is rapidly internalised on antibody binding. (ox.ac.uk)

CD70 is expressed on activated T, B and NK cells, activated plasmacytoid dendritic cells (pDCs), and chronic B cell lymphocytic leukemia and large B cell lymphomas. (biolegend.com)
Monocyte-derived dendritic cells electroporated with mRNA encoding CD70, CD40 ligand, and constitutively active TLR4 (TriMix) as well as the tumor-associated antigens tyrosinase, gp100, MAGE-A3, or MAGE-C2 were administered together with IPI for four cycles. (iozk.de)
CD40 is expressed broadly on antigen-presenting cells (APCs) such as dendritic cells, B cells, macrophages, and monocytes as well as non-immune endothelial cells, basal epithelial cells, and a range of tumors. (bioxcell.com)
Dendritic cells (DCs) are a type of immune system cell that process and present fragments of infectious agents to T cells, a function known as antigen presentation. (treatmentactiongroup.org)
Induction of an effective anti-tumour response requires the active and integrated participation of host dendritic cells (DCs), taking up tumour-associated antigens (TAAgs) and generating Ag-specific T cells[ 1 ]. (biomedcentral.com)
We previously described mRNA electroporation as an efficient gene delivery method to introduce tumor-antigens (Ag) into murine immature dendritic cells (DC). (dc-research.eu)

The vaccine is composed by autologous DCs electroporated with mRNA encoding CD40L, CD70, caTLR4 and one tumorantigen (gp100, Tyrosinase, Mage-C2 or Mage-A3). (dc-research.eu)
DC were electroporated with mRNA encoding tumor antigens and a putative TLR3 ligand. (dc-research.eu)

Coincubation of the internalising anti-CD70 antibody with a saporin-conjugated secondary antibody before addition to A498 cells resulted in 50% cell killing. (ox.ac.uk)
These data indicate that CD70 represents a potential target antigen for toxin-conjugated therapeutic antibody treatment of RCC. (ox.ac.uk)
11. The method of any one of claims 1 to 10, wherein the anti-ILT4 antibody or antigen binding fragment thereof comprises a heavy chain variable region of SEQ ID NO: 19 and a light chain variable region of SEQ ID NO: 14. (sumobrain.com)
15. The method of claim 13 or 14, wherein the PD-1 antagonist is an anti-PD-1 antibody or antigen binding fragment thereof. (sumobrain.com)
18. The method of claim 15, wherein the anti-PD-1 antibody or antigen binding fragment thereof comprises a heavy chain variable region of SEQ ID NO:9 and a light chain variable region of SEQ ID NON. (sumobrain.com)
19. The method of claim 15, wherein the anti-PD-1 antibody or antigen binding fragment thereof comprises a heavy chain of SEQ ID NO: 10 and a light chain of SEQ ID NO:5. (sumobrain.com)

CD70, also known as CD27L, is a 50 kD type II transmembrane glycoprotein and member of the tumor necrosis factor superfamily. (biolegend.com)

Cells that express CARs, most notably T cells, are highly reactive against their specific tumor antigen in an MHC-unrestricted manner to generate an immune response that promotes robust tumor cell elimination when infused into cancer patients. (cancer.gov)

The ligand for CD27 is CD70, which is a member of the TNF ligand superfamily. (adipogen.com)

Immune checkpoint proteins can regulate the immune response in malignancies and infectious diseases via numerous types of activating and inhibitory signals between antigen-presenting cells (APCs) and T cells [ 3 , 4 ]. (biomedcentral.com)
eTheRNA s TriMix contains three naked, injectable mRNA molecules (coding for naturally occurring proteins called CD40L, CD70 and constitutive active TLR4) that together generate a safer and potent enhancement of the patient s own Çdendritic cell-mediated immune response against cancer or microbial antigens than any other similar approach investigated until now. (biostartups.club)

Tissue section of human prostate containing adenocarcinoma that has been immunostained for the cell-surface antigen CD90. (ucsd.edu)
UF Health researchers have found a way to target a molecule, known as CD70, found on the surface of glioblastoma tumors, that lets the tumor grow, migrate and evade the body's immune system. (ufl.edu)
In this system, nanobodies, encoded by selectable plasmids are expressed on the surface of the yeast S. cerevisiae and captured using magnetic beads conjugated to a target antigen. (boun.edu.tr)

Antigens, CD36" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (uchicago.edu)
Below are the most recent publications written about "Antigens, CD36" by people in Profiles. (uchicago.edu)

The UF researchers discovered that a T cell, a type of white blood cell, can be extracted from a patient and genetically reprogrammed to recognize and attack glioblastoma tumors that feature CD70. (ufl.edu)
Millennium's initial payment bought an exclusive ADC license to an initial antigen expressed on solid tumors. (drugdiscoverynews.com)

We evaluated tumor-associated antigen specific T-cell responses in previously collected peripheral blood mononuclear cells, available from 15 patients. (iozk.de)
Tumor cells exploit certain immune-checkpoint pathways as a major mechanism of immune resistance, particularly against T cells that are specific for tumor antigens. (bioxcell.com)
CD1d-restricted immunoglobulin G formation to GPI-anchored antigens mediated by NKT cells. (harvard.edu)
After several stimulations, the CD8 T cells become evaluated on their cytokine secretion, cytotoxicity and % of antigen specific T cells. (dc-research.eu)

IL-2 Restores T-Cell Dysfunction Induced by Persistent Mycobacterium tuberculosis Antigen Stimulation. (mit.edu)

Seattle Genetics is also developing a number of preclinical ADC programs, including SGN-75, which the company is advancing towards a planned 2009 investigational new drug submission for CD70-positive malignancies. (drugdiscoverynews.com)

Immune checkpoints are regulators of the immune system which prevent the immune system from attacking self-antigens indiscriminately. (bioxcell.com)

Allogene Overland will have an exclusive license to develop, manufacture and commercialize specific Allogene candidates targeting BCMA, CD70, FLT3, and DLL3 in the licensed territories. (allogene.com)

The DCs were then exposed to an inactivated SIV vaccine (leading to the processing and presenting of SIV antigens - the researchers described these DCs as SIV-loaded) or left unloaded with any antigens. (treatmentactiongroup.org)

Identification of sVSG117 as an immunodiagnostic antigen and evaluation of a dual-antigen lateral flow test for the diagnosis of human African trypanosomiasis. (harvard.edu)

Gut bacterial products, particularly those of gut anaerobes, and gut-resident antigen-presenting cell (APC) TNLG8A are key contributors of SLAMF4 induction in the intestine. (bmj.com)

This graph shows the total number of publications written about "Antigens, Thy-1" by people in this website by year, and whether "Antigens, Thy-1" was a major or minor topic of these publications. (rush.edu)

Anatomy29

Organisms10

Diseases3

Chemicals and Drugs157

Analytical, Diagnostic and Therapeutic Techniques and Equipment27

Phenomena and Processes31

Disciplines and Occupations1

Information Science3

Health Care3

CD28-independent costimulation of T cells by OX40 ligand and CD70 on activated B cells. (1/159)

Constitutive expression and role of the TNF family ligands in apoptotic killing of tumor cells by human NK cells. (2/159)

Critical contribution of OX40 ligand to T helper cell type 2 differentiation in experimental leishmaniasis. (3/159)

CD27-mediated activation of murine NK cells. (4/159)

CD134L engagement enhances human B cell Ig production: CD154/CD40, CD70/CD27, and CD134/CD134L interactions coordinately regulate T cell-dependent B cell responses. (5/159)

Apoptosis in coxsackievirus B3-caused diseases: interaction between the capsid protein VP2 and the proapoptotic protein siva. (6/159)

The expression of CD70 and CD80 by gene-modified tumor cells induces an antitumor response depending on the MHC status. (7/159)

Enhancement of adenovirus vector entry into CD70-positive B-cell Lines by using a bispecific CD70-adenovirus fiber antibody. (8/159)

Antigens

Antigens, CD

Antigens, CD8

Antigens, Neoplasm

Antigens, CD3

Antigens, Surface

Antigens, Bacterial

Antigens, CD38

Antigens, CD34

Antigens, CD19

Antigens, CD40

CD40 Ligand

Antigens, CD20

Antigens, Viral

Antigens, CD28

Antigens, CD44

Antigens, CD7

Antigens, CD14

Antigens, CD2

CD4-CD8 Ratio

Antigens, CD5

Antigens, Differentiation

CD4-Positive T-Lymphocytes

Antigens, CD1

Antibodies, Monoclonal

Antigens, CD56

Antigens, Differentiation, T-Lymphocyte

ADP-ribosyl Cyclase

Antigens, Differentiation, Myelomonocytic

Antigens, CD80

Antigens, CD53

Antigens, CD24

Antigens, CD13

Antigens, Protozoan

T-Lymphocytes

Antigens, CD86

Flow Cytometry

B-Lymphocytes

Antigens, Polyomavirus Transforming

Antigens, CD95

HLA Antigens

Antigens, Differentiation, B-Lymphocyte

Antigens, CD45

Immunophenotyping

NAD+ Nucleosidase

Antigens, Fungal

Molecular Sequence Data

H-2 Antigens

Sialic Acid Binding Ig-like Lectin 3

Antigens, Helminth

Receptors, Antigen, T-Cell

Antigens, CD18

Lymphocyte Activation

Antigens, CD30

Membrane Glycoproteins

CD8-Positive T-Lymphocytes

Epitopes

Antigens, CD9

Carcinoembryonic Antigen

HLA-DR Antigens

Antigens, CD15

Antigens, Viral, Tumor

Cell Line

Antigens, CD43

Antigens, CD36

Amino Acid Sequence

Antigens, CD11

Histocompatibility Antigens Class II

Histocompatibility Antigens

Antigens, CD59

Receptors, Antigen, B-Cell

Proliferating Cell Nuclear Antigen

Antigens, CD57

Antigens, CD70

Antigens, CD46

Lectins, C-Type

Antigens, CD58

Antigens, CD4

Antigens, CD47

Antigens, CD11b