Human CD272 (BTLA, B and T Lymphocyte Attenuator) is a member of the Immunoglobulin superfamily and has sequence homology to PD-1 and CTLA4. It is expressed on T and B lymphocytes and other hemopoetic lineages. Engagement of this molecule by its ligand, CD270(HVEM, a TNF superfamily member) can down regulate activated T and B cell responses. CD272 levels on antigen specific CD8+ T cells have been reported to decrease in viral specific, but not melanoma specific activated lines (1). Polymorphism of the CD272 molecule has been linked to rheumatoid arthritis (3).
Antibodies ANC6E9(cat #272-020) and ANC5A5(cat #372-020) each bind to a distinct epitope of CD272 and are suitable as a matched pair for EIA (see attachment).
Isotype: Murine IgG1k
Immunogen: Recombinant extracellular human CD272
Specificity: Antibody from clone ANC5A5 binds to CD272 on the cell surface of human PBMC in Flow cytometry, and to recombinant CD272-muIg (cat #542-020) in EIA.
1) Derre’ L, DE Speiser, et al. (2010) J Clin Invest 120(1):157-167.
3) Lin SC, Chan CH, et al. (2006) J Biomed Sci 13(6): 853-860.
4) Pasero C, D Olive, et al. (2009) Curr Mol Med 9(7): 911-927.
5) Gavrieli M, KM Murphy, et al. (2006) Adv Immunol 92: 152-185.