Target: CD278.
Clone: 7E.17G9.
Specificity: Anti-CD278 In Vivo Antibody - Low Endotoxin (7E.17G9) recognizes an epitope on Mouse ICOS.
Purification method: This monoclonal antibody was purified using multi-step affinity chromatography methods such as Protein A or G depending on the species and isotype.
Background: Inducible co-stimulator (ICOS), also called ALIM and H4, is a homodimeric protein and member of the CD28 family of immune co-stimulatory receptors. Other family members are CD28, CTLA-4 and PD-1. ICOS enhances all basic T cell responses to a foreign antigen, namely proliferation, secretion of lymphokines, up-regulation of molecules that mediate cell-cell interaction, and effective help for antibody secretion by B cells. Unlike the constitutively expressed CD28, ICOS has to be de novo induced on the T cell surface, does not up-regulate the production of IL-2, but superinduces the synthesis of IL-10, a B cell-differentiation factor. In vivo, ICOS is highly expressed on tonsillar T cells, which are closely associated with B cells in the apical light zone of germinal centres, the site of terminal B cell maturation. ICOS regulates CD28-dependent and CD28-independent CD4 (+) subset (Th1 and Th2) responses. It is a major regulator of the adaptive immune system and therefore, has a protective role in inflammatory autoimmune diseases.
Concentration: 1.0 - 5.0 mg/ml.
Formulation: 0.01 M phosphate buffered saline (PBS) pH 7.2, 150 mM NaCl with no carrier protein, potassium or preservatives added.
Purity: >95% by SDS-PAGE and HPLC.
Endotoxin: ≤ 1.0 EU/mg as determined by the LAL method.
Aggregation: Aggregation level ≤ 5%.
Use: Products are for research use only. Not for use in diagnostic or therapeutic procedures.
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