Antigens, CD
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.
Antigens, CD8
Antigens, Neoplasm
Antigens, CD3
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, Surface
Antigens, CD38
Antigens, CD34
Antigens, CD19
Antigens, CD40
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.
CD40 Ligand
Antigens, CD20
Antigens, CD28
Antigens, CD44
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)
Antigens, CD7
Antigens, CD14
Antigens, CD2
CD4-CD8 Ratio
Antigens, CD5
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, Differentiation
CD4-Positive T-Lymphocytes
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.
Antigens, CD1
Antigens, CD56
Antigens, Differentiation, T-Lymphocyte
ADP-ribosyl Cyclase
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.
Antigens, Differentiation, Myelomonocytic
Antigens, CD80
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.
Antigens, CD53
Antigens, CD24
Antigens, CD13
Antigens, Protozoan
T-Lymphocytes
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.
Antigens, CD86
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.
Flow Cytometry
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.
B-Lymphocytes
Antigens, Polyomavirus Transforming
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.
Antigens, CD95
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.
HLA Antigens
Antigens, Differentiation, B-Lymphocyte
Antigens, CD45
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.
Immunophenotyping
Molecular Sequence Data
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.
Sialic Acid Binding Ig-like Lectin 3
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.
Antigens, Helminth
Receptors, Antigen, T-Cell
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.
Antigens, CD18
Lymphocyte Activation
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.
Antigens, CD30
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.
CD8-Positive T-Lymphocytes
Antigens, CD9
Carcinoembryonic Antigen
HLA-DR Antigens
Antigens, CD15
Antigens, Viral, Tumor
Antigens, CD43
Antigens, CD36
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.
Amino Acid Sequence
Antigens, CD11
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.
Histocompatibility Antigens Class II
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.
Histocompatibility Antigens
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.
Antigens, CD59
Receptors, Antigen, B-Cell
Proliferating Cell Nuclear Antigen
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.
Antigens, CD57
Antigens, CD70
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.
Antigens, CD46
Lectins, C-Type
Antigens, CD58
Antigens, CD4
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.
Antigens, CD47
Antigens, CD11b
Base Sequence
Prostate-Specific Antigen
Antigens, CD11c
O Antigens
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)
HLA-A2 Antigen
Enzyme-Linked Immunosorbent Assay
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.
Immunohistochemistry
CD4 Lymphocyte Count
Immunoglobulin G
Antigens, Tumor-Associated, Carbohydrate
Antigens, CD55
Antigens, CD31
Tumor Cells, Cultured
Histocompatibility Antigens Class I
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.
Antigens, CD81
Cells, Cultured
Antigens, CD137
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.
Cell Differentiation
Lymphocytes
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.
Monocytes
HLA-A Antigens
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.
Cross Reactions
Dendritic Cells
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, Interleukin-2
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.
Blood Group Antigens
Hepatitis B Surface Antigens
Antigens, CD63
Transfection
Antibody Specificity
Antigens, CD151
Antigens, CD79
Fluorescent Antibody Technique
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.
HLA-D Antigens
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.
CD30 Ligand
Phenotype
N-Glycosyl Hydrolases
Burkitt Lymphoma
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.
Receptors, Antigen
Immunization
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).
Antibody Formation
Antigens, CD11a
RNA, Messenger
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.
Hepatitis B Antigens
Bone Marrow
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.
Antigen-Antibody Reactions
Immune Sera
Macrophages
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, SCID
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.
T-Lymphocytes, Cytotoxic
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 Fusion Proteins
Cell Division
Antigen-Presenting Cells
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.
Herpesvirus 4, Human
Receptors, Antigen, T-Cell, alpha-beta
HLA-B 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.
Immunologic Memory
Bone Marrow Cells
Cytotoxicity, Immunologic
Mice, Transgenic
MART-1 Antigen
Antigens, CD147
HIV Antigens
CTLA-4 Antigen
HL-60 Cells
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)
Antigens, CD82
Immunoenzyme Techniques
Antibodies
Gene Expression
Antigens, Thy-1
Cytokines
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.
Immune Tolerance
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.
Immunity, Cellular
Thymus Gland
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.
Autoantigens
Clone Cells
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)
Epstein-Barr Virus Nuclear Antigens
Interleukin-2
Immunoglobulin M
Biological Markers
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.
H-Y Antigen
Antigens, CD146
Antigens, Heterophile
T-Lymphocytes, Regulatory
Antibodies, Monoclonal, Murine-Derived
Epitopes, T-Lymphocyte
Interferon-gamma
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.
Antigens, CD98
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.
Hepatitis B Core Antigens
Peptides
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.
Antigen-Antibody Complex
Lymph Nodes
Immunodiffusion
HLA-DQ Antigens
Signal Transduction
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.
Mice, Inbred Strains
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.
Forssman Antigen
Rabbits
Antigens, CD274
Complement Fixation Tests
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.
Simian virus 40
Glycoproteins
Adjuvants, Immunologic
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.
Isoantigens
Hybridomas
gp100 Melanoma Antigen
Major Histocompatibility Complex
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.
Killer Cells, Natural
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.
Immunoelectrophoresis
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.
Resistance of paroxysmal nocturnal hemoglobinuria cells to the glycosylphosphatidylinositol-binding toxin aerolysin. (1/479)
Paroxysmal nocturnal hemoglobinuria (PNH) is a clonal stem cell disorder caused by a somatic mutation of the PIGA gene. The product of this gene is required for the biosynthesis of glycosylphosphatidylinositol (GPI) anchors; therefore, the phenotypic hallmark of PNH cells is an absence or marked deficiency of all GPI-anchored proteins. Aerolysin is a toxin secreted by the bacterial pathogen Aeromonas hydrophila and is capable of killing target cells by forming channels in their membranes after binding to GPI-anchored receptors. We found that PNH blood cells (erythrocytes, lymphocytes, and granulocytes), but not blood cells from normals or other hematologic disorders, are resistant to the cytotoxic effects of aerolysin. The percentage of lysis of PNH cells after aerolysin exposure paralleled the percentage of CD59(+) cells in the samples measured by flow cytometry. The kinetics of red blood cell lysis correlated with the type of PNH erythrocytes. PNH type III cells were completely resistant to aerolysin, whereas PNH type II cells displayed intermediate sensitivity. Importantly, the use of aerolysin allowed us to detect PNH populations that could not be detected by standard flow cytometry. Resistance of PNH cells to aerolysin allows for a simple, inexpensive assay for PNH that is sensitive and specific. Aerolysin should also be useful in studying PNH biology. (+info)Identification of the individual residues that determine human CD59 species selective activity. (2/479)
Formation of the cytolytic membrane attack complex of complement on host cells is inhibited by the membrane-bound glycoprotein, CD59. The inhibitory activity of CD59 is species restricted, and human CD59 is not effective against rat complement. Previous functional analysis of chimeric human/rat CD59 proteins indicated that the residues responsible for the species selective function of human CD59 map to a region contained between positions 40 and 66 in the primary structure. By comparative analysis of rat and human CD59 models and by mutational analysis of candidate residues, we now identify the individual residues within the 40-66 region that confer species selective function on human CD59. All nonconserved residues within the 40-66 sequence were substituted from human to rat residues in a series of chimeric human/rat CD59 mutant proteins. Functional analysis revealed that the individual human to rat residue substitutions F47A, T51L, R55E, and K65Q each produced a mutant human CD59 protein with enhanced rat complement inhibitory activity with the single F47A substitution having the most significant effect. Interestingly, the side chains of the residues at positions 47, 51, and 55 are all located on the short single helix (residues 47-55) of CD59 and form an exposed continuous strip parallel to the helix axis. A single human CD59 mutant protein containing rat residue substitutions at all three helix residues produced a protein with species selective activity comparable to that of rat CD59. We further found that synthetic peptides spanning the human CD59 helix sequence were able to inhibit the binding of human CD59 to human C8, but had little effect on the binding of rat CD59 to rat C8. (+info)Complement activation and expression of membrane regulators in the middle ear mucosa in otitis media with effusion. (3/479)
The aetiopathogenesis of chronic otitis media with effusion (OME) in children is not yet fully understood. OME is characterized by metaplasia of the epithelium and accumulation of sticky, glue-like effusion in the middle ear containing different mediators of inflammation, including activation fragments of the complement system. Here we examined whether the fluid phase complement activation is reflected in the middle ear mucosa and how the mucosa is protected against the cytolytic activity of complement. Mucosal biopsies from 18 middle ears of children with a history of chronic OME were taken. The biopsies were analysed by immunofluorescence microscopy after staining for complement fragments iC3b/C3c, C3d and C9, and regulators membrane cofactor protein (MCP; CD46), decay-accelerating factor (DAF; CD55) and protectin (CD59). There was a strong staining for iC3b/C3c, and a weaker one for C3d and C9 on the surface of the middle ear epithelial cells of OME patients but not in controls without OME. MCP was expressed on the hyperplastic three to four outer cell layers of the epithelium, while CD59 was expressed throughout the middle ear mucosa. The results suggest a strong ongoing complement activation and consequent inflammation in the middle ear cavity. Unrestricted complement damage of the epithelial lining is prevented by the strong expression of MCP and CD59. (+info)Induction of decay-accelerating factor by cytokines or the membrane-attack complex protects vascular endothelial cells against complement deposition. (4/479)
Vascular endothelium is continuously exposed to complement-mediated challenge, and this is enhanced during inflammation. Although the complement-regulatory proteins decay-accelerating factor (DAF), CD59, and membrane cofactor protein (MCP) protect endothelial cells (ECs) against complement-mediated injury, the control of their expression and relative contributions to vascular protection is unclear. We explored the hypothesis that mechanisms exist which induce upregulation of complement-regulatory proteins on ECs to maintain vascular function in inflammation. Tumor necrosis factor alpha (TNFalpha) and interferon gamma (IFNgamma) each increased DAF expression but not CD59 or MCP expression, and a combination of these cytokines was more potent than either alone. Cytokine-induced expression depended on increased DAF mRNA and de novo protein synthesis and was maximal by 72 hours. In addition, assembly of the membrane-attack complex (MAC) on ECs induced a 3-fold increase in DAF expression, and this was enhanced by cytokines. DAF upregulation was not inhibited by protein kinase C (PKC) antagonists. The increase in DAF was functionally relevant since it reduced complement 3 (C3) deposition by 40%, and this was inhibited by an anti-DAF monoclonal antibody. These observations indicate that upregulation of DAF expression by cytokines or MAC may represent an important feedback mechanism to maintain the integrity of the microvasculature during subacute and chronic inflammatory processes involving complement activation. (+info)Synovial PMN show a coordinated up-regulation of CD66 molecules. (5/479)
Changes in the expression of various activation-dependent surface markers have been reported for polymorphonuclear neutrophils (PMN) isolated from synovial fluid of patients with inflammatory joint diseases. We extend these findings to the expression of CD66 molecules and several other surface markers. Three members of the CD66 family, namely CD66a, CD66b, and CD66c, showed an up to fourfold up-regulation on synovial fluid PMN compared with peripheral blood PMN (PBG) of the same patients; CD59 was increased twofold, the expression of CD16 did not change, whereas CD62L was reduced by more than 50% on synovial fluid PMN. It is interesting that CD66a, CD66b, and CD66c showed a coordinated expression on PBG of patients and controls and a coordinated up-regulation on synovial neutrophils. In contrast, after in vitro stimulation of peripheral blood PMN with phorbol myristate acetate, CD66c was much less up-regulated compared with CD66a and CD66b. All samples of synovial fluid PMN exhibited an additional increase in the expression of CD66a, CD66b, and CD66c when stimulated with phorbol myristate acetate in vitro. Prostaglandins are known to inhibit various responses of neutrophils to inflammatory stimuli. We could show that prostaglandins inhibit N-formyl-methionyl-leucyl-phenylalanine-induced up-regulation of CD66 on peripheral blood PMN in a concentration-dependent manner. (+info)Biochemical background of paroxysmal nocturnal hemoglobinuria. (6/479)
Paroxysmal nocturnal hemoglobinuria (PNH) is an acquired disorder characterized by paroxysms of intravascular hemolysis. A considerable part of erythrocytes in patient blood is susceptible to autologous complement activation because of the deficiency of CD59, which is a glycosylphosphatidylinositol (GPI)-anchored protein and inhibits the formation of the membrane attack complex (MAC) of complement. The deficiency of CD59 is derived from the inability of GPI-anchor synthesis. Although more than 10 proteins are involved in the GPI-anchor synthesis, the mutation of only one protein, PIG-A, causes the defect in about 200 patients with PNH who have been analyzed. The reason why only PIG-A causes the deficiency of GPI anchor is due to the location of its gene on X chromosome. The clonal stem cell mutated with PIG-A gene in the bone marrow loses the capability of the synthesis of GPI-anchor. The mutation of PIG-A gene alone, however, seems to be insufficient to account for the survival of the PIG-A-deficient cells in the bone marrow. Thus, a fraction of the mutant stem cells probably gain a survival advantage by some additional changes, either additional mutations or changes in immunological circumstances. The release of the surviving cells into blood stream results in a clinical syndrome with PNH. (+info)Development of adenovirus vectors encoding rat complement regulators for use in therapy in rodent models of inflammatory diseases. (7/479)
C activation has been implicated in the pathogenesis of numerous inflammatory human diseases and disease models. A therapy based on C inhibition might therefore be of benefit to reduce inflammation and ameliorate disease. C inhibition in vivo can be accomplished by the delivery of soluble recombinant C regulators either systemically or directly to a target site, but effects are transitory. We have developed a strategy for the efficient delivery of the membrane-bound rat C inhibitors, CD59, Crry, and decay-accelerating factor (DAF), using replication-deficient adenovirus vectors with the intention of treating rat models of disease in which C is implicated. The adenovirus recombinants(RAd), RAdCD59, RAdCrry, and RAdDAF, respectively, have been tested for expression and function of the transgene in vitro. Infection of human fetal foreskin fibroblasts resulted in high levels of expression of each of the rat inhibitors. The constructs were also tested for inhibition of rat C-mediated cell lysis and C3b deposition. In a cell lysis assay, each inhibited to varying degrees of efficiency in the order RAdCD59 = RAdDAF > RAdCrry. In a C3b deposition assay, RAdDAF caused a greater reduction in C3b deposition than RAdCrry and RAdCD59 was ineffective. These agents, individually or in combination, provide the tools for testing the effects of prolonged inhibition of C at a target site on the progress of experimental models of disease. (+info)Thyrotropin-releasing hormone-induced depletion of G(q)alpha/G(11)alpha proteins from detergent-insensitive membrane domains. (8/479)
The role of detergent-insensitive membrane domains (DIMs) in desensitisation of the G protein-coupled receptor-mediated hormone response was studied in clone E2M11 of HEK293 cells which stably express high levels of both thyrotropin-releasing hormone (TRH) receptors and G(11)alpha G protein. DIMs were prepared by flotation in equilibrium sucrose density gradients and characterised by a panel of membrane markers representing peripheral, glycosylphosphatidylinositol-bound as well as integral membrane proteins (caveolin, CD29, CD55, CD59, CD147, the alpha subunit of Na, K-ATPase) and enzyme activities (alkaline phosphatase, adenylyl cyclase). Caveolin-containing DIMs represented only a small fraction of the overall pool of G(q)alpha/G(11)alpha-rich domains. Prolonged stimulation of E2M11 cells with TRH resulted in dramatic depletion of G(q)alpha/G(11)alpha from all DIMs, which was paralleled by a concomitant G(q)alpha/G(11)alpha increase in the high-density gradient fractions containing the bulk-phase membrane constituents soluble in 1% Triton X-100. Distribution of membrane markers was unchanged under these conditions. Membrane domains thus represent a substantial structural determinant of the G protein pool relevant to desensitisation of hormone action. (+info)
Homologous restriction factor legal definition of homologous restriction factor
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Three-finger protein
Other LU proteins, such as the CD59 antigen, have well-studied functions in regulation of the immune system. Snake three-finger ... Other LU domain proteins are small globular proteins such as CD59 antigen, LYNX1, SLURP1, and SLURP2. Many LU domain containing ... The family is named for two representative groups of members, the small globular protein lymphocyte antigen 6 (LY6) family and ... "High-resolution structures of bacterially expressed soluble human CD59". Acta Crystallographica. Section F, Structural Biology ...
LU domain
Other LU domain proteins are small globular proteins such as CD59 antigen, LYNX1, SLURP1, and SLURP2. Urokinase plasminogen ... such as the CD59 antigen, have well-studied functions in regulation of the immune system. PDB: 2J8B; Leath KJ, Johnson S, ... The LU domain (Ly-6 antigen/uPAR) is an evolutionarily conserved protein domain of the three-finger protein superfamily. This ... activator surface receptor InterPro: IPR003631 Cell-surface glycoprotein Ly-6/CD59 InterPro: IPR003632 ARS; CD177; CD59; LY6D; ...
Augustine blood group system
AUG2 was first identified as Ata in 1967 as a common human antigen. The SLC29A1 gene was identified in 1997 and found to encode ... CD59, and Augustine blood group systems". Immunohematology. 34 (3): 85-90. doi:10.21307/immunohematology-2018-013. ISSN 0894- ... There are four known variants of the antigen: AUG1, AUG2, AUG3, and AUG4. One person may express multiple variants; AUG:1,2,4 ( ... It includes four red blood cell surface glycoprotein antigens which are encoded by alleles of the gene SLC29A1. The protein ...
Lan blood group system
The antigen was first described in 1961, and Lan was officially designated a blood group in 2012. The Lan antigen is carried on ... CD59, and Augustine blood group systems" (PDF). Immunohematology. 34 (3): 85-90. doi:10.21307/immunohematology-2018-013. PMID ... van der Hart M, Moes M, van der Veer M, van Loghem JJ (1961). "Ho and Lan-two new blood group antigens". Proceedings of the 8th ... The Lan blood group system (short for Langereis) is a human blood group defined by the presence or absence of the Lan antigen ...
Junior blood group system
The Junior blood group system (or JR) is a human blood group defined by the presence or absence of the Jr(a) antigen, a high- ... CD59, and Augustine blood group systems" (PDF). Immunohematology. 34 (3): 85-90. doi:10.21307/immunohematology-2018-013. PMID ... They named the causative antigen "JR" after Rose Jacobs, one of the five patients - the common name "Junior" is in fact a ... Moghaddam M, Naghi AA (2019). "Clinical significance of antibodies to antigens in the Raph, John Milton Hagen, I, Globoside, ...
List of MeSH codes (D23)
... antigens, cd57 MeSH D23.050.301.264.035.158 - antigens, cd58 MeSH D23.050.301.264.035.159 - antigens, cd59 MeSH D23.050.301.264 ... antigens, cd57 MeSH D23.101.100.110.158 - antigens, cd58 MeSH D23.101.100.110.159 - antigens, cd59 MeSH D23.101.100.110.179 - ... antigens, cd15 MeSH D23.101.100.900.131 - antigens, cd31 MeSH D23.101.100.920 - antigens, ly MeSH D23.101.100.930 - antigens, ... forssman antigen MeSH D23.050.285.018 - antigens, cd24 MeSH D23.050.285.025 - antigens, cd30 MeSH D23.050.285.040 - antigens, ...
CD59
... +Antigen at the US National Library of Medicine Medical Subject Headings (MeSH) Human CD59 genome location and CD59 gene ... 1990). "The CD59 antigen is a structural homologue of murine Ly-6 antigens but lacks interferon inducibility". Eur. J. Immunol ... 1990). "Isolation and expression of the full-length cDNA encoding CD59 antigen of human lymphocytes". DNA Cell Biol. 9 (3): 213 ... 1992). "Structure of the CD59-encoding gene: further evidence of a relationship to murine lymphocyte antigen Ly-6 protein". ...
Schistosoma mansoni
Antibodies and antigens can be detected in the blood using ELISA to identify infection. Adult worm antigens can be detected by ... In addition, schistosomes have six homologues of human CD59 which are strong inhibitors of MAC. The presence of S. mansoni is ... Circulating cathodic antigen (CCA) in urine can be tested with lateral flow immune-chromatographic reagent strip and point-of- ... This fibrosis occurs only many years after the infection and is presumed to be caused in part by soluble egg antigens and ...
CD2
... +Antigen at the US National Library of Medicine Medical Subject Headings (MeSH) Mouse CD Antigen Chart Human CD Antigen ... "Overlapping but nonidentical binding sites on CD2 for CD58 and a second ligand CD59". Science. 256 (5065): 1805-7. Bibcode: ... The great majority of T cell lymphomas and leukaemias also express CD2, making it possible to use the presence of the antigen ... It has also been called T-cell surface antigen T11/Leu-5, LFA-2, LFA-3 receptor, erythrocyte receptor and rosette receptor. It ...
Complement system
C3b binds to antigen-associated Ig and to the microbe surface. Ability of C3b to bind to antigen-associated Ig would work ... One example is CD59, also known as protectin, which inhibits C9 polymerization during the formation of the membrane attack ... which has formed a complex with antigens. C4b and C3b are also able to bind to antigen-associated IgG or IgM, to its Fc portion ... Upon immunization with an antigen, more of these receptors are formed, and they are then shed from the cells to circulate in ...
Extracellular RNA
Babiker, AA; Nilsson, B; Ronquist, G; Carlsson, L; Ekdahl, KN (February 1, 2005). "Transfer of functional prostasomal CD59 of ... "Tumor-derived exosomes are a source of shared tumor rejection antigens for CTL cross-priming". Nature Medicine. 7 (3): 297-303 ...
CD9
Ninomiya H, Sims PJ (July 1992). "The human complement regulatory protein CD59 binds to the alpha-chain of C8 and to the "b" ... "Molecular cloning of the CD9 antigen. A new family of cell surface proteins". The Journal of Biological Chemistry. 266 (1): 117 ... "Molecular cloning of the mouse equivalent of CD9 antigen". Thrombosis Research. 71 (5): 377-83. doi:10.1016/0049-3848(93)90162- ... "Purification and partial characterization of CD9 antigen of human platelets". FEBS Letters. 264 (2): 270-4. doi:10.1016/0014- ...
Outline of immunology
Antigen Antigenicity Immunogen Superantigen Allergen Hapten Epitope Linear Conformational Mimotope Tumor antigen Antigen- ... CD59) - Classical, Lectin, Alternate Factor I - Classical, Lectin, Alternate C4BP - Classical, Lectin Factor H - Alternate ... T cells Antigen receptor - T cell receptor (TCR) Subunits - [email protected] / [email protected] / [email protected] / [email protected] Co-receptors CD8 (CD8α / CD8β) CD4 ... CD18 Macrophage-1 antigen (CR3) - Heterodimer: CD11b / CD18 Integrin alphaXbeta2 (CR4) - Heterodimer: CD11c / CD18 Very late ...
Xenotransplantation
Indirect xenorecognition involves the presentation of antigens from the xenograft by recipient antigen presenting cells to CD4+ ... Experiments have shown this reduces α-Gal expression by 70%. Expression of human complement regulators (CD55, CD46, and CD59) ... Antigens of phagocytosed graft cells can also be presented by the host's class I MHC molecules to CD8+ T cells. The strength of ... These antigens (foreign objects) are often treated with powerful immunosuppressive drugs that could, in turn, make the patient ...
CD90
It was originally named theta (θ) antigen, then Thy-1 (THYmocyte differentiation antigen 1) due to its prior identification in ... it can also be involved in cell to cell transfer of GPI anchored proteins like CD55 and CD59. Thy-1 is one of the most heavily ... The antigen Thy-1 was the first T cell marker to be identified. Thy-1 was discovered by Reif and Allen in 1964 during a search ... Reif AE, Allen JM (1964). "The AKR thymic antigen and its distribution in leukemias and nervous tissue". J. Exp. Med. 120 (3): ...
Cholesterol-dependent cytolysin
Cholesterol is not required for intermedilysin (ILY) to bind to a target cell, as it uses human CD59 for initial attachment, ... of the lectin regulatory domain of the cholesterol-dependent cytolysin lectinolysin reveals the basis for its lewis antigen ... the recognition of human CD59 membrane-anchored protein. The recognition of cholesterol provides specificity for eukaryotic ... cells and the specificity for the glycosylphosphatidylinositol-anchored protein CD59 provides specificity for human cells. ...
NCR3
December 2003). "CD59 is physically and functionally associated with natural cytotoxicity receptors and activates human NK cell ... Tissue Antigens. 58 (4): 255-8. doi:10.1034/j.1399-0039.2001.580406.x. PMID 11782277. "Entrez Gene: NCR3 natural cytotoxicity ...
List of primary immunodeficiencies
CD59) deficiency Paroxysmal nocturnal hemoglobinuria Ficolin 3 deficiency Properdin deficiency Factor I deficiency Factor H ... selective immunoglobulin A deficiency Specific antibody deficiency to specific antigens with normal B cell and normal Ig ...
Decay-accelerating factor
List of human clusters of differentiation CD59 GRCh38: Ensembl release 89: ENSG00000196352 - Ensembl, May 2017 GRCm38: Ensembl ... Cromer blood group system at BGMUT Blood Group Antigen Gene Mutation Database at NCBI, NIH Overview of all the structural ... red blood cells with very low levels of DAF and CD59 undergo complement-mediated hemolysis. Symptoms include low red blood cell ...
Sertoli cell
CD59, a surface molecule on SCs and a member of the complement regulatory proteins (CRP), inhibits the last step of the ... "Mouse Sertoli cells display phenotypical and functional traits of antigen-presenting cells in response to interferon gamma". ... Clusterin, a soluble molecule with functions similar to CD59, forms a complex with Granzyme B and inhibits activation of ...
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Myelodysplastic Syndrome (MDS) Workup: Approach Considerations, Complete Blood Count and Peripheral Blood Smear, Bone Marrow...
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SMART: LU domain annotation
The cell surface antigen CD59 is an inhibitor of complement-mediated lysis and a member of the Ly6 superfamily (Ly6SF) of ... CD59, thymocyte B cell antigen, Sgp-2). Topology of these domains is similar to that of snake venom neurotoxins. ... Structure of a disulfide locked mutant of Intermedilysin with human CD59. 4k24. Structure of anti-uPAR Fab ATN-658 in complex ... Domains homologous with the internal repeats of u-PAR constitute the extracellular part of Ly-6 antigens and of the squid ...
NKp46 Protein Human Recombinant | NCR1 Antigen | ProSpec
CD59 is an NKp46 coreceptor (by physical association) together they activate cytotoxicity of human NK-cells, their engagement ... Lymphocyte antigen 94 homolog, CD335 antigen, NCR1, LY94, NCRNKp46, CD335. ... In addition, engagement of the antigen with the monoclonal antibody stimulates intracellular calcium levels and the synthesis ...
DeCS 2018 - Changed terms
Antigens, CD56. CD56 Antigen. Antigens, CD58. CD58 Antigens. Antigens, CD59. CD59 Antigens. ... 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. ...
DeCS
2018; see ANTIGENS, CD59 1996-2017 and CD59 ANTIGEN 1989-1995; CD59 ANTIGEN was indexed under ANTIGENS, CD 1990-1995; under ... CD59 Antigens Entry term(s). Antigens, CD59 CD59 Antigen HRF20 Homologous Restriction Factor 20 MACIF Membrane Attack Complex ... Antigènes CD59 Entry term(s):. Antigens, CD59. CD59 Antigen. HRF20. Homologous Restriction Factor 20. MACIF. Membrane Attack ... CD59 Antigens - Preferred Concept UI. M0028327. Scope note. Small glycoproteins found on both hematopoietic and non- ...
DeCS 2018 - Changed terms
Antigens, CD56. CD56 Antigen. Antigens, CD58. CD58 Antigens. Antigens, CD59. CD59 Antigens. ... 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. ...
DeCS 2018 - Changed terms
Antigens, CD56. CD56 Antigen. Antigens, CD58. CD58 Antigens. Antigens, CD59. CD59 Antigens. ... 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. ...
CD59 purified MaxPab mouse polyclonal antibody (B02P) - (H00000966-B02P) - Products - Abnova
CD59 (NP_000602.1, 1 a.a. ~ 128 a.a) full-length human protein. (H00000966-B02P) - Products - Abnova ... Mouse polyclonal antibody raised against a full-length human CD59 protein. ... CD59 antigen,CD59 antigen p18-20 (antigen identified by monoclonal antibodies 16.3A5, EJ16, EJ30, EL32 and G344),CD59 ... Western Blot analysis of CD59 expression in transfected 293T cell line (H00000966-T02) by CD59 MaxPab polyclonal antibody.. ...
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Code System Concept
CD59 Mouse anti-Human, FITC, Clone: MEM-43, Invitrogen™ 2 mL; FITC CD59 Mouse anti-Human, FITC, Clone: MEM-43, Invitrogen™
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Flow Cytometry Shop CD59 Mouse anti-Human, FITC, Clone: MEM-43, Invitrogen™ ... CD59 Antibody FITC conjugate (MEM-43) from Invitrogen™. Species Reactivity: Human; Applications: ... Antigen. CD59. Classification. Monoclonal. Conjugate. FITC. Gene. CD59. Gene Alias. CD59, CD59 molecule complement regulatory ... CD59 is the key regulator that preserves the autologous cells from terminal effector mechanism of the complement cascade. CD59 ...
Transfection of human CD59 complementary DNA into rat cells confers resistance to human complement. - Oxford Neuroscience
... immunofluorescence staining using the anti-CD59 monoclonal antibody YTH53.1 demonstrated the presence of human CD59 antigen on ... A cDNA encoding CD59 was subcloned into the expression vector pSFSVneo and stably transfected into the rat T cell line NB2-6TG ... To determine the biological effect of expression of human CD59 in rat cells, an assay was devised which measured the relative ... It was observed that CD59-transfected rat cells are less susceptible to lysis by human complement and that this effect was ...
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Erythroid-specific expression of human CD59 and transfer to vascular endothelial cells. | [email protected]
Erythroid-specific expression of human CD59 and transfer to vascular endothelial cells. ... Antigens, CD * Antigens, CD59 * Complement Inactivator Proteins * Gene Expression * Gene Transfer Techniques ... Erythroid-specific expression of human CD59 and transfer to vascular endothelial cells. Journal Article (Journal Article) ...
Pesquisa | Portal Regional da BVS
Intermedilysin binds to the sialyl-TF O-glycan on its erythrocyte receptor, CD59. Removing sialyl-TF from CD59 reduces ... We present a structure for suilysin domain 4 in complex with two distinct glycan receptors, P1 antigen and αGal/Galili. We ... antigen expression. Removal of linkage-specific fucose, galactose, N-acetylgalactosamine, and sialic acid modulated GAS ... that colonization of human oral epithelial cells by GAS serotypes M3 and M12 is mediated by human blood group antigens [ABO(H ...
The glycosylation of the complement regulatory protein, human erythrocyte CD59. - ORA - Oxford University Research Archive
"The Glycosylation of the Complement Regulatory Protein, Human Erythrocyte CD59." In Advances in Experimental Medicine and ... "The Glycosylation of the Complement Regulatory Protein, Human Erythrocyte CD59." Advances in Experimental Medicine and Biology ... human erythrocyte CD59. Advances in Experimental Medicine and Biology, 435, 153-162. ... Antigens, CD59. Polysaccharides. Humans. Blood Platelets. Carbohydrate Sequence. Phosphatidylinositols. Molecular Sequence Data ...
Heterogeneity of Acetylcholine Receptor Autoantibody-Mediated Complement Activity in Patients With Myasthenia Gravis |...
... transfected with self-antigens, in which the complement regulators (CD46, CD55, and CD59) were knocked out. NHS was added as ... CD46, CD55, and CD59 CRISPR sgRNAs (Table e2) were cloned into the pSpCas9(BB)-2A-Puro (PX459) V2.021 vector (a gift from Dr. ... CD46, CD55, CD59 KO HEK293T cells or CHO cells were prepared as outlined in the live CBA. Cells were washed twice and ... Deficiency of decay accelerating factor and CD59 leads to crisis in experimental myasthenia. Exp Neurol. 2006;202(2):287-293. ...
Fogo Selvagem: Background, Pathophysiology, Etiology
... suggested that the environmental antigen or antigens triggering the autoimmune response in fogo selvagem may be linked to ... 21] Higher CD59 transcriptional levels may be related to susceptibility, particularly in women. [22] ... A 2015 study suggested that IgE anti-LJM11 sand fly salivary antigen may facilitate the development of fogo selvagem. [12] A ... Neural System Antigens Are Recognized by Autoantibodies from Patients Affected by a New Variant of Endemic Pemphigus Foliaceus ...
Myelodysplastic Syndrome (MDS) Workup: Approach Considerations, Complete Blood Count and Peripheral Blood Smear, Bone Marrow...
Activation of the Classical Complement Pathway - Immunology
A complement cascade similar to that of the alternative pathway can be activated through specific antibody-antigen interactions ... In the classical pathway the initiating step is the specific binding of IgG or IgM to antigen. Once this occurs, a complement ... The host proteins that serve key regulatory functions within the alternative pathway (DAF, CR1 factor I, CD59) also serve ... The C4b covalently associates with the antibody-antigen complex on the surface of a microbial membrane and can serve as an ...
glacial acetic acid Tenders in Delhi
... should be able to detect cd55 and cd59 antigens on blood cells 59 immersion oil for microscopy 60 immunohistochemistry ... antigen retrieval buffer 20 x each ml 653 tris base ( 9.5 ph ) antigen retrieval buffer rtu each ml 654 tbs wash buffer 20 x ... 181 rapid test antigen covid 19 kit 182 chromogranin a elisa kit 183 widal antigen kit ( slide & tube test ) 184 poly excel hrp ... epithelial membrane antigen ) for ihc conc 578 antibody to ema ( epithelial membrane antigen ) for ihc rtu 579 antibody to ...
Affinity and Kinetic Analysis of the Molecular Interaction of ICAM-1 and Leukocyte Function-Associated Antigen-1 | The Journal...
... molecule CD2 binds CD58 with a very low affinity and an extremely fast dissociation rate but does not bind CD48 or CD59. ... Affinity and Kinetic Analysis of the Molecular Interaction of ICAM-1 and Leukocyte Function-Associated Antigen-1 Yuichi ... Identification of amino acids in the CD11a I-domain important for binding of the leukocyte function-associated antigen-1 (LFA-1 ... A binding interface on the I domain of lymphocyte function-associated antigen-1 (LFA-1) required for specific interaction with ...
Circulating plasmablasts/plasma cells: a potential biomarker for IgG4-related disease | Arthritis Research & Therapy | Full Text
... and human leukocyte antigen (HLA)-DR, by flow cytometric assay. In addition, various B-cell lineage subsets were cultured in ... and PE-anti-CD59 monoclonal antibodies (mAbs) (BD Biosciences, San Jose, CA, USA), as well as PE-anti-B-cell maturation antigen ... As expected, BCR complex, CD19, CD20, CIITA, human leukocyte antigen (HLA)-DRA, and HLA-DRB1 gene expression was downregulated ... BAFF B-cell activating factor, BCMA B-cell maturation antigen, Ig Immunoglobulin, IL-6R Interleukin-6 receptor, TACI ...
Swiss-Prot Protein Knowledgebase - UniProt
Lymphocyte function-associated antigen 3 (Surface glycoprotein LFA-3) CD59 CD59_HUMAN P13987 107271 CD59 CD59 glycoprotein ( ... Carcinoembryonic antigen-related cell adhesion molecule 5 (Carcinoembryonic antigen) (Meconium antigen 100) CD67 N.A. N.A. N.A ... Melanoma-associated antigen p97) CD229 LY9_HUMAN Q9HBG7 600684 LY9 T-lymphocyte surface antigen Ly-9 (Lymphocyte antigen 9) ( ... Melanoma-associated antigen MUC8) (Melanoma-associated antigen A32) (S-endo 1 endothelial-associated antigen) CD147 BASI_HUMAN ...
People
Polyomavirus small T antigen interacts with yes-associated protein to regulate cell survival and differentiation. Journal of ... Overlapping but nonidentical binding sites on CD2 for CD58 and a second ligand CD59. Science 256, 1805-1807. ... Polyomavirus small T antigen interacts with yes-associated protein to regulate cell survival and differentiation. Journal of ... Papillomavirus E7 oncoproteins share functions with polyomavirus small T antigens. Journal of virology 89, 2857-2865.. Luo, L. ...
DIFFERENTIATION1
- A group of differentiation surface antigens, among the first to be discovered on thymocytes and T-lymphocytes. (rush.edu)
Receptor2
- This entry represents a three-fold repeated domain in urokinase-type plasminogen activator receptor (uPAR) that occurs singly in other GPI-linked cell-surface glycoproteins (Ly-6 family, CD59, thymocyte B cell antigen, Sgp-2). (embl.de)
- A KIR receptor that has specificity for HLA-C ANTIGENS. (wakehealth.edu)
CD581
- The primary ligand for CD2 is CD58 (LFA-3) located on antigen-presenting cells, with additional ligands comprising CD15 (SSEA-1), CD48 and CD59. (stemcell.com)
Lymphocyte1
- Further, CD59 is a low-affinity ligand of human CD2, causes T cell costimulation, and is involved in lymphocyte signal transduction. (fishersci.se)
Monoclonal antibody3
- In addition, engagement of the antigen with the monoclonal antibody stimulates intracellular calcium levels and the synthesis of cytokines. (prospecbio.com)
- Indirect immunofluorescence staining using the anti-CD59 monoclonal antibody YTH53.1 demonstrated the presence of human CD59 antigen on transfected cells and its attachment to the cell surface by a rat glycolipid anchor. (ox.ac.uk)
- To determine the biological effect of expression of human CD59 in rat cells, an assay was devised which measured the relative lysis of transfected cells compared to untransfected cells in the presence of human complement and a lytic monoclonal antibody. (ox.ac.uk)
Restriction Factor1
- These experiments provide a direct demonstration that CD59 can function as an homologous complement restriction factor for nucleated cells. (ox.ac.uk)
Complement-mediated lysis2
- The cell surface antigen CD59 is an inhibitor of complement-mediated lysis and a member of the Ly6 superfamily (Ly6SF) of cysteine-rich cell-surface molecules whose sequences are related to those of snake venom neurotoxins. (embl.de)
- We have examined the role of the human CD59 antigen in inhibiting complement-mediated lysis by transfer and expression of a CD59 cDNA in rat cells. (ox.ac.uk)
Regulatory protein2
CD271
- Further characterization of CD19 + CD24 − CD38 hi plasmablasts/plasma cells was carried out by evaluating additional surface markers, including CD27, CD95, and human leukocyte antigen (HLA)-DR, by flow cytometric assay. (biomedcentral.com)
Protein4
- Mouse polyclonal antibody raised against a full-length human CD59 protein. (abnova.com)
- CD59 (NP_000602.1, 1 a.a. ~ 128 a.a) full-length human protein. (abnova.com)
- Once this occurs, a complement protein termed C1 (which comprises a single C1q subunit, two C1r subunits and two C1s subunits) binds to adjacent Fc domains in the antibody-antigen complex. (pharmacy180.com)
- The classical pathway can additionally lead to complement protein deposition on insoluble antibody- antigen immune complexes circulating within blood, and in doing so promote the clearance of such potentially harmful complexes by Kupffer cells of the liver. (pharmacy180.com)
Glycoprotein1
- CD133 antigen , also known as prominin-1 , is a glycoprotein that in humans is encoded by the PROM1 gene . (wikidoc.org)
Leukocyte4
- The epidemiology, age distribution, and human leukocyte antigen (HLA) associations distinguish fogo selvagem from nonendemic pemphigus foliaceus. (medscape.com)
- The scope of leukocyte surface antigens detected in Stage II was readjusted in Stage III. (padiracinnovation.org)
- A total of 34 leukocyte antigens types were examined by flow cytometry immunophenotyping. (padiracinnovation.org)
- The main uses of FC in TM are detection of fetomaternal hemorrhage, diagnosis of paroxysmal nocturnal hemoglobinuria, quantification of D antigen, detection of platelet antibody, quality control of blood components, for example, residual leukocyte counts and evaluation of CD34-positive hematopoietic progenitor cells in stem cell grafts. (ajts.org)
Molecule1
- CD59 molecule (CD59 blood group) [Sourc. (gsea-msigdb.org)
Membrane5
- CD59 restricts the cytolytic activity of homologous complement by binding to C8 and C9 and blocking the assembly of the membrane attack complex. (bvsalud.org)
- CD59 (Protectin) is a small (18-20 kDa) GPI-anchored ubiquitously expressed inhibitor of the membrane attack complex (MAC). (fishersci.se)
- CD59 also associates with C5b-8 complex and counteracts appropriate formation of cytolytic pore within the plasma membrane. (fishersci.se)
- CD59 is a potent inhibitor of the complement membrane attack complex, whereby it binds complement C8 and/or C9 during the assembly of this complex, thereby inhibiting the incorporation of multiple copies of C9 into the complex, which is necessary for osmolytic pore formation. (fishersci.se)
- The C4b covalently associates with the antibody-antigen complex on the surface of a microbial membrane and can serve as an opsonin. (pharmacy180.com)
Endothelial cells1
- Erythroid-specific expression of human CD59 and transfer to vascular endothelial cells. (duke.edu)
Aberrant2
- Many workers considered FC as a very good complement when aberrant expression of various erythrocyte antigens needs to be elucidated. (ajts.org)
- Aberrant antigen processing and presentation: Key pathogenic factors leading to immune activation in Ankylosing spondylitis. (nigilharoon.com)
MRNA2
Descriptor1
- Antigens, Thy-1" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (rush.edu)
Intracellular1
- This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. (nih.gov)
Surface2
- occurs singly in other GPI-linked cell-surface glycoproteins (Ly-6 family, CD59, thymocyte B cell antigen, Sgp-2). (embl.de)
- This huge surface area combined with the intense exposure to foreign invaders, toxins and other immune stimulating antigens, makes the intestinal tract the largest organ of immune surveillance and response in the body. (healmindbody.com)
Human3
- CD59 is an NKp46 coreceptor (by physical association) together they activate cytotoxicity of human NK-cells, their engagement results in tyrosine phosphorylation of CD3-zeta chains associated with NKp46. (prospecbio.com)
- Transfection of human CD59 complementary DNA into rat cells confers resistance to human complement. (ox.ac.uk)
- It was observed that CD59-transfected rat cells are less susceptible to lysis by human complement and that this effect was blocked by a F(ab')2 fragment of YTH53.1. (ox.ac.uk)
Genes2
- Among the six significantly relevant genes for EGR1 expression, high expression levels of genes, including CD59, GAS1, CXCR7, and RAMP3, were associated with a good survival prognosis. (researchsquare.com)
- The in vitro test showed EGR1 modulated the transcriptional activity of the target genes including CD59, GAS1, CXCR7, and RAMP3. (researchsquare.com)
Factor1
- The host proteins that serve key regulatory functions within the alternative pathway (DAF, CR1 factor I, CD59) also serve similar functions within the classical pathway. (pharmacy180.com)
Cells1
- CD59 is the key regulator that preserves the autologous cells from terminal effector mechanism of the complement cascade. (fishersci.se)
Cell2
- Western Blot analysis of CD59 expression in transfected 293T cell line ( H00000966-T02 ) by CD59 MaxPab polyclonal antibody. (abnova.com)
- A cDNA encoding CD59 was subcloned into the expression vector pSFSVneo and stably transfected into the rat T cell line NB2-6TG. (ox.ac.uk)
Patients1
- Multiple CD59 Polymorphisms in Chinese Patients with Mycobacterium tuberculosis Infection. (cdc.gov)
Activation1
- However, in contrast to the alternative pathway the activation step in the classical pathway requires specific antibody-antigen interactions. (pharmacy180.com)
Similar1
- A complement cascade similar to that of the alternative pathway can be activated through specific antibody-antigen interactions. (pharmacy180.com)