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PE Mouse Anti-Human CD8 RPA-T8 RUO

PE Mouse Anti-Human CD8 

Clone  RPA-T8   (RUO)

  • Brand BD Pharmingen™
  • Alternative Name CD8α; CD8A; CD8 alpha; Leu2; MAL; T8; p32
  • Vol. Per Test 20 µl
  • Isotype Mouse IgG1, κ
  • Reactivity Human (QC Testing)  Rhesus, Cynomolgus, Baboon (Tested in Development) 
  • Application Flow cytometry (Routinely Tested) 
  • Immunogen Human CD8a
  • Workshop No. IV T171; V T-CD08.03; VI 6T-CD8.1, 6T-081
  • Entrez Gene ID 925 
  • Storage Buffer Aqueous buffered solution containing BSA, protein stabilizer, and ≤0.09% sodium azide.
  • Regulatory Status RUO
Product Details Recommended Assay References

Description

The RPA-T8 monoclonal antibody specifically binds to CD8 alpha (CD8á). CD8α is a type I transmembrane glycoprotein and a member of the immunoglobulin superfamily. CD8α is expressed by the majority of thymocytes, by subpopulations of αβ T cells and γδ T cells and by some NK cells. Cell surface CD8á is expressed either as a disulfide-linked homodimer (CD8αα) or as a heterodimer (CD8αâ) when disulfide-bonded to a CD8 beta chain (CD8â). CD8-positive αβ T cells coexpress both CD8áá homodimers and CD8αβ heterodimers whereas some γä T cells and NK cells express CD8αα homodimers. CD8 plays important roles in T cell activation and selection. The extracellular IgSF domain of CD8α binds to a non-polymorphic determinant on HLA class I molecules (α3 domain) and enables CD8 to function as a co-receptor with MHC class I-restricted TCR during T cell recognition of antigen. The cytoplasmic domain of CD8α associates with Lck, a Src family protein tyrosine kinase that is involved in intracellular signaling. The RPA-T8 and HIT8a monoclonal antibodies are not cross-blocking. This clone has been reported to react with a subset of peripheral blood lymphocytes, but not monocytes nor granuloyctes, of baboon and both rhesus and cynomolgus macaque monkey. In general, a higher frequency of CD8+ and CD4+CD8+ lymphocytes are observed in non-human primates compared to normal human donors.

Format
  • Format PE
  • Excitation Source Blue 488 nm,Green 532 nm,Yellow/Green 561 nm
  • Excitation Max 496 nm
  • Emission Max 578 nm

R-phycoerythrin (PE) is an accessory photosynthetic pigment found in red algae. It exists in vitro as a 240-kDa protein with 23 phycoerythrobilin chromophores per molecule. This makes PE one of the brightest fluorochromes for flow cytometry applications, but its photobleaching properties make it unsuitable for fluorescence microscopy.

Other Formats →

Suggested Companion Products

PE Mouse IgG1, κ Isotype Control RUO
100 Tests Cat No: 555749

Stain Buffer (FBS) RUO
500 mL Cat No: 554656

Stain Buffer (BSA) RUO
500 mL Cat No: 554657

Lysing Solution 10X Concentrate CE/IVD
100 Cat No: 349202

Lysing Buffer RUO
100 mL Cat No: 555899

PE Mouse Anti-Human CD8 RPA-T8 RUO
25 Tests Cat No: 561949

PE Mouse Anti-Human CD8 RPA-T8 RUO
50 Tests Cat No: 557086

PE Mouse Anti-Human CD8 RPA-T8 RUO
500 Tests Cat No: 561950

Resources & Tools
 Spectrum Viewer  Panel Designer  Spectrum Viewer  Download TDS  Regulatory Document Website
Preparation and Storage

Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated with R-PE under optimum conditions, and unconjugated antibody and free PE were removed.

Product Notices

  1. This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
  2. An isotype control should be used at the same concentration as the antibody of interest.
  3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  4. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
  5. Species cross-reactivity detected in product development may not have been confirmed on every format and/or application.
  6. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
  7. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.


  1. Garbrecht F, Loebel A, Disanto JP, Flomenberg N. Chatacterization of Workshop antiCD8 mAb using human CD8-expressing murine L-cell transfectants. In: Schlossman SF. Stuart F. Schlossman .. et al., ed. Leucocyte typing V : white cell differentiation antigens : proceedings of the fifth international workshop and conference held in Boston, USA, 3-7 November, 1993. Oxford: Oxford University Press; 1995; :354-356.

  2. Kersh EN, Kersh GJ, Allen PM. Partially phosphorylated T cell receptor zeta molecules can inhibit T cell activation. J Exp Med. 1999; 190(11):1627-1636. (Clone-specific: Flow cytometry). View reference

  3. Knapp W. W. Knapp .. et al., ed. Leucocyte typing IV : white cell differentiation antigens. Oxford New York: Oxford University Press; 1989; :1-1182.

  4. Rabin RL, Park MK, Liao F, Swofford R, Stephany D, Farber JM. Chemokine receptor responses on T cells are achieved through regulation of both receptor expression and signaling. J Immunol. 1999; 162(7):3840-3850. (Clone-specific: Flow cytometry). View reference

  5. Schlossman SF. Stuart F. Schlossman .. et al., ed. Leucocyte typing V : white cell differentiation antigens : proceedings of the fifth international workshop and conference held in Boston, USA, 3-7 November, 1993. Oxford: Oxford University Press; 1995; .

  6. Schlossman SF. Stuart F. Schlossman .. et al., ed. Leucocyte typing V : white cell differentiation antigens : proceedings of the fifth international workshop and conference held in Boston, USA, 3-7 November, 1993. Oxford: Oxford University Press; 1995; .

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