CD8 alpha antibody

Catalog No. ABIN2689434

Product Details anti-CD8 alpha Antibody

Target: CD8 alpha (CD8A) (CD8a Molecule (CD8A))

Reactivity: Mouse

Host: Rat

Clonality: Monoclonal

Conjugate: This CD8 alpha antibody is un-conjugated

Application: Flow Cytometry (FACS), Immunohistochemistry (Frozen Sections) (IHC (fro)), Immunohistochemistry (Formalin-fixed Sections) (IHC (f)), Immunohistochemistry (Zinc-fixed Sections) (IHC (zinc))

Brand: BD Pharmingen™

Characteristics: The 53-6.7 antibody monoclonal antibody specifically binds to the 38 kDa α and 34 kDa α' chains of the CD8 differentiation antigen (Ly-2 or Lyt-2) of all mouse strains tested. The CD8 α and α' chains (CD8a) form heterodimers with the CD8 β chain (CD8b, Ly-3, or Lyt-3) on the surface of most thymocytes. A subpopulation of mature T lymphocytes (i.e., MHC class I-restricted T cells, including most T suppressor/cytotoxic cells) expresses almost exclusively the CD8 αβ heterodimer (the α' chain is absent). Subsets of γδ TCR-bearing T cells, intestinal intrapithelial lymphocytes, and dendritic cells express CD8a without CD8b. It has been suggested that the expression of the CD8a/CD8b heterodimer is restricted to T lymphocytes which matured in the thymus or in an extrathymic environment that had been influenced by thymus-initiated neuroendocrine signals. CD8 is an antigen coreceptor on the T-cell surface which interacts with MHC class I molecules on antigen-presenting cells or epithelial cells. It participates in T-cell activation through its association with the T-cell receptor complex and protein tyrosine kinase lck (p56 [lck]). The CD8 α and α' chains arise from alternatively spliced messengers of a single CD8a gene. The longer α form associates with p56 [lck] via a CXCP motif in its cytoplasmic domain, which it shares with CD4, but not with CD8b. The truncated α' chain is unable to associate with p56 [lck], and it may function to attenuate the CD8-mediated costimulatory signal during intrathymic T-cell maturation. In vivo and in vitro treatment with 53-6.7 mAb has reportedly been effective at depleting CD8+ peripheral T lymphocytes. The 53-6.7 antibody has also been reported to cross-reaact with CD8 α- and α'-like polypeptides on subsets of thymic and peripheral lymphocytes in the Egyptian toad, Bufo regularis. Immunohistochemical staining of CD8+ T lymphocytes. Frozen sections of normal mouse spleen was reacted with 53-6.7 antibody. CD8+ T lymphocytes can be identified by the intense brown labeling of their cell surface membranes.

BD Pharmingen™ Purified Rat Anti-Mouse CD8a - Purified - Clone 53-6.7 - Isotype Rat IgG2a, κ - Reactivity Ms - 1 mL

Purification: The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.

Immunogen: Mouse thymus / spleen Cells

Clone: 53

Isotype: IgG2a kappa

Application Details

Application Notes: Optimal working dilution should be determined by the investigator.

Restrictions: For Research Use only

Handling

Format: Liquid

Concentration: 62.5 μg/mL

Buffer: Aqueous buffered solution containing BSA, goat serum, and ≤0.09 % sodium azide.

Preservative: Sodium azide

Precaution of Use: This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.

Storage: 4 °C

Storage Comment: Store undiluted at 4°C.

References for anti-CD8 alpha antibody (ABIN2689434)

Alexander-Miller, Leggatt, Sarin, Berzofsky: "Role of antigen, CD8, and cytotoxic T lymphocyte (CTL) avidity in high dose antigen induction of apoptosis of effector CTL." in: The Journal of experimental medicine, Vol. 184, Issue 2, pp. 485-92, (1996) (PubMed).

Sydora, Brossay, Hagenbaugh, Kronenberg, Cheroutre: "TAP-independent selection of CD8+ intestinal intraepithelial lymphocytes." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 156, Issue 11, pp. 4209-16, (1996) (PubMed).

Wang, Klein: "Thymus-neuroendocrine interactions in extrathymic T cell development." in: Science (New York, N.Y.), Vol. 265, Issue 5180, pp. 1860-2, (1994) (PubMed).

Nakayama, Nakayama, Negishi, Kuida, Louie, Kanagawa, Nakauchi, Loh: "Requirement for CD8 beta chain in positive selection of CD8-lineage T cells." in: Science (New York, N.Y.), Vol. 263, Issue 5150, pp. 1131-3, (1994) (PubMed).

Janeway: "The T cell receptor as a multicomponent signalling machine: CD4/CD8 coreceptors and CD45 in T cell activation." in: Annual review of immunology, Vol. 10, pp. 645-74, (1992) (PubMed).

Takahashi, Nakata, Tanaka, Adachi, Nakauchi, Yagita, Okumura: "CD4 and CD8 regulate interleukin 2 responses of T cells." in: Proceedings of the National Academy of Sciences of the United States of America, Vol. 89, Issue 12, pp. 5557-61, (1992) (PubMed).

Zamoyska, Derham, Gorman, von Hoegen, Bolen, Veillette, Parnes: "Inability of CD8 alpha' polypeptides to associate with p56lck correlates with impaired function in vitro and lack of expression in vivo." in: Nature, Vol. 342, Issue 6247, pp. 278-81, (1989) (PubMed).

Bierer, Sleckman, Ratnofsky, Burakoff: "The biologic roles of CD2, CD4, and CD8 in T-cell activation." in: Annual review of immunology, Vol. 7, pp. 579-99, (1989) (PubMed).

Ledbetter, Herzenberg: "Xenogeneic monoclonal antibodies to mouse lymphoid differentiation antigens." in: Immunological reviews, Vol. 47, pp. 63-90, (1980) (PubMed).

Target Details for CD8 alpha

Target: CD8 alpha (CD8A) (CD8a Molecule (CD8A))

Alternative Name: CD8a (CD8A Products)

Synonyms: cd8 antibody, LOC100136450 antibody, BB154331 antibody, Ly-2 antibody, Ly-35 antibody, Ly-B antibody, Lyt-2 antibody, zgc:136643 antibody, CD8 antibody, Leu2 antibody, MAL antibody, p32 antibody, RHACD8-4 antibody, CD8a molecule antibody, uncharacterized LOC100125537 antibody, CD8 alpha antibody, CD8 antigen, alpha chain antibody, T-cell surface glycoprotein CD8 alpha chain antibody, Cd8a antibody, LOC100125537 antibody, LOC100136450 antibody, CD8A antibody, cd8a antibody, LOC100126556 antibody

Background: Synonyms: Cd8a, CD8 alpha chain, Ly-2, Lyt2, Lyt-2, Ly-35, Ly-B

Pathways: TCR Signaling