Specificity
alpha chain of the murine CD8 heterodimer, Mr 32-34 kDa
In the mouse, CD8 exists in two forms: (i) a CD8 heterodimer composed of an alpha chain (CD8 alpha /Lyt-2) and a beta chain (CD8 beta /Lyt-3); and (ii) a homodimer of two alpha chains. The heterodimer is found on the surface of essentially all thymocytes and the "suppressor/cytotoxic" subpopulation of mature T lymphocytes. Subsets of intestinal intraepithelial lymphocytes express CD8 alpha without CD8 beta. It has been suggested that CD8^+ beta ^- T cells mature extrathymically, while development of the CD8 alpha ^+ beta ^+ population of T cells is thymus-dependent. CD8 acts as a coreceptor with MHC Class I-restricted T cell receptors in antigen recognition and positive selection of MHC class I-restricted CD8^+ T cells. In vivo and in vitro treatment with the 53-6.7 monoclonal antibody effectively depletes CD8 alpha ^+ cells. The 53-6.7 monoclonal antibody also blocks allogeneic help specific for class I MHC antigens and T cell responses to IL-2. 1-8
Characterization
To ensure lot-to-lot consistency, each batch of monoclonal antibody is tested by flow cytometry to conform to characteristics of a standard reference. Representative data are included in this product insert.
Preparation and Storage
The purified (UNLB) antibody is supplied as 0.5 mg of purified immunoglobulin in 1.0 mL of 100 mM borate buffered saline, pH 8.2. No preservatives or amine-containing buffer salts added. Store at 2- 8 degree C.
The fluorescein (FITC) conjugate is supplied as 0.5 mg or 0.1 mg in 1.0 mL of PBS/NaN3. Store at 2- 8 degree C.
The biotin (BIOT) conjugate is supplied as 0.5 mg in 1.0 mL of PBS/NaN3. Store at 2-8 degree C.
The R-phycoerythrin (R-PE) conjugate is supplied as 0.1 mg in 1.0 mL or 0.2 mg in 2.0 mL of PBS/NaN3 and a stabilizing agent. Store at 2-8 degree C. Do not freeze!
The allophycocyanin (APC) conjugate is supplied as 0.1 mg in 1.0 mL of PBS/NaN3 and a stabilizing agent. Store at 2-8 degree C. Do not freeze!
The Spectral Red (SPRD), R-phycoerythrin-Cyanine 7 (R-PE-CY 7), R-phycoerythrin-Cyanine 5.5 (R-PE-CY 5.5), allophycocyanin-Cyanine 5.5 conjugate (APC-CY 5.5), allophycocyanin-Cyanine 7 (APC-CY 7) and R-phycoerythrin-Texas Red (R-PE-TXRD) conjugates are supplied as 0.1 mg in 1.0 mL of PBS/NaN3 and a stabilizing agent. Store at 2-8 degree C. Do not freeze!
The low endotoxin, azide-free (LE/AF) antibody is supplied as 0.5 mg purified immunoglobulin in 1.0 mL of PBS. Aliquot and store at or below -20 degree C.
The Cyanine 5 (CY 5) conjugate is supplied as 0.1 mg in 1.0 mL of PBS/NaN3. Store at 2-8 degree C.
Protect conjugated forms from light. Each reagent is stable for the period shown on the bottle label if stored as directed.
Other Notes
Small volumes of anti-CD8 alpha /Lyt-2 antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.
Product References and Citations for
anti-CD8 alpha /Lyt-2 antibody
1. Ledbetter, J. A. and W. E. Seaman. 1982. Immunol. Rev. 68:197.
2. Lefrancois, L. 1991. J. Immunol. 147:1746.
3. Lefrancois, L. 1991. Immunology Today 12:436.
4. Takahasi, K., M. Nakata, T. Tanaka, H. Adachi, H. Nakauchi, H. Yagita, and K. Okumura. 1992. Proc. Natl. Acad. Sci. USA. 89:5557.
5. Mage, M. G. 1991. In Current Protocols in Immunology. John Wiley & Sons, New York, p. 3.4.1.
6. Kruisbeek, A. M. 1991. In Current Protocols in Immunology. John Wiley & Sons, New York, p. 4.1.1.
7. Swain, S. L., D. P. Dialynas, F. W. Fitch, and M. English. 1984. J. Immunol. 132:1118.
8. Ledbetter, J. A. and L. A. Herzenberg. 1979. Immunol. Rev. 47:63.
9. Ledbetter, J. A., R. V. Rouse, H. S. Micklem, and L. A. Herzenberg. 1980. J. Exp. Med. 152:280.
10. Jia, W. and J. F. Kearney. 1996. Personal communication.
Precautions
All of MyBioSource's Products are for scientific laboratory research purposes and are not for diagnostic, therapeutics, prophylactic or in vivo use. Through your purchase, you expressly represent and warrant to MyBioSource that you will properly test and use any Products purchased from MyBioSource in accordance with industry standards. MyBioSource and its authorized distributors reserve the right to refuse to process any order where we reasonably believe that the intended use will fall outside of our acceptable guidelines.
Disclaimer
While every efforts were made to ensure the accuracy of the information provided in this datasheet, MyBioSource will not be liable for any omissions or errors contained herein. MyBioSource reserves the right to make changes to this datasheet at any time without prior notice.
It is the responsibility of the customer to report product performance issues to MyBioSource within 30 days of receipt of the product. Please visit our
Terms & Conditions page for more information.