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C57Bl/6 splenocytes were stained with 0.5 ug Anti-Mouse CD8a FITC (35-0081) (solid line) or 0.5 ug Rat IgG2a FITC isotype control (dashed line).

FITC Anti-Mouse CD8a (53-6.7)

SKU 35-0081-U025
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The 53-6.7 antibody reacts with the 32-34 kDa alpha subunit of mouse CD8, known as CD8a or CD8 alpha. CD8a can form a homodimer (CD8 alpha-alpha), but is more commonly expressed as a heterodimer with a second chain known as CD8b or CD8 beta. CD8 acts as a co-receptor in antigen recognition and subsequent T cell activation that is initiated upon binding of the T cell receptor (TCR) to antigen-bearing MHC Class I molecules. The cytoplasmic domains of CD8 provide binding sites for the tyrosine kinase lck, facilitating intracellular signaling events that lead to T cell activation, development, and cytotoxic effector functions. CD8+ cytotoxic T cells (CTLs) play an important role in inducing cell death of tumor cells, as well as cells infected by virus, bacteria or parasites.

The 53-6.7 antibody is widely used as a phenotypic marker for mouse CD8a expression on cytotoxic T cells, thymocytes, as well as on certain cell types that do not also express the TCR, including some NK cells and lymphoid dendritic cells.

Recent Publications:

Sun Y, Lu D, Yin Y, Song J, Liu Y, Hao W, Qi F, Zhang G, Zhang X, Liu L, Lin Z, Liang H, Zhao X, Jin Y, Yin Y. PTENα functions as an immune suppressor and promotes immune resistance in PTEN-mutant cancer. Nat Commun. 2021 Aug 26;12(1):5147. doi: 10.1038/s41467-021-25417-6. PMID: 34446716.

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Pingili AK, Chaib M, Sipe LM, et al. Immune checkpoint blockade reprograms systemic immune landscape and tumor microenvironment in obesity-associated breast cancer. Cell Rep. 2021 Jun 22;35(12):109285. doi: 10.1016/j.celrep.2021.109285. PMID: 34161764.

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Burbach BJ, O'Flanagan SD, Shao Q, et al. Irreversible electroporation augments checkpoint immunotherapy in prostate cancer and promotes tumor antigen-specific tissue-resident memory CD8+ T cells. Nat Commun. 2021 Jun 23;12(1):3862. doi: 10.1038/s41467-021-24132-6. PMID: 34162858.

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Baba T, Yoshida T, Tanabe Y, et al. Cytoplasmic DNA accumulation preferentially triggers cell death of myeloid leukemia cells by interacting with intracellular DNA sensing pathway. Cell Death Dis. 2021 Mar 26;12(4):322. doi: 10.1038/s41419-021-03587-x. PMID: 33771977.  

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Yang BH, Wang K, Wan S, et al. TCF1 and LEF1 Control Treg Competitive Survival and Tfr Development to Prevent Autoimmune Diseases. Cell Rep. 2019;27(12):3629-3645.e6. doi:10.1016/j.celrep.2019.05.061.

Kim IS, Gao Y, Welte T, et al. Immuno-subtyping of breast cancer reveals distinct myeloid cell profiles and immunotherapy resistance mechanisms. Nat Cell Biol. 2019;21(9):1113-1126. doi:10.1038/s41556-019-0373-7.

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Avery L, Filderman J, Szymczak-Workman AL, Kane LP4. Tim-3 co-stimulation promotes short-lived effector T cells, restricts memory precursors, and is dispensable for T cell exhaustion. Proc Natl Acad Sci U S A. 2018 Mar 6;115(10):2455-2460. doi: 10.1073/pnas.1712107115

Bally APR, Lu P, Tang Y, Austin JW, Scharer CD, Ahmed R and Boss JM. 2015. J Immunol. doi: 10.4049/jimmunol.1402550. (Flow Cytometry)

Name FITC Anti-Mouse CD8a (53-6.7)
Cat. No. 35-0081
Alternative Names CD8 alpha, Ly-2, Ly-35, Ly-B, Lyt-2
Gene ID 12525
Clone 53-6.7
Isotype Rat IgG2a, κ
Reactivity Mouse
Format FITC
Application Flow Cytometry
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