The B12-1 monoclonal antibody reacts with CD127, the 65-75- kDa type I transmembrane protein IL- 7Rα. The high affinity IL-7 receptor complex is composed of at least two transmembrane proteins, IL-7Rα and CD132, the common γ chain. CD127 has some sequence homology to the cytokine receptor superfamily (also known as the hematopoietin receptor superfamily). Interaction between IL-7 and its receptor is important for the proliferation of pre-B lymphocytes and can also trigger proliferation of CD4-CD8- immature thymocytes, as well as mature T cells in the periphery. Mice lacking CD127 display profoundly impaired development of the B and T lymphoid cell lineages, but display no obvious non-lymphoid abnormalities.5 IL-7Rα is expressed on common lymphoid progenitors and early stages of B lineage development in the bone marrow, on the earliest thymocyte progenitors and CD4-CD8- double-negative and CD4+ and CD8+ singlepositive thymocytes, and on most peripheral T lymphocytes. Intestinal intraepithelial lymphocytes with low-density γδ TCR upregulate CD127 expression in response to IL-2, which may be secreted by neighboring αβ TCR-bearing T cells. Expression of CD127 in the bone marrow and spleen. C57BL/6 bone marrow leukocytes (Left panels) and splenocytes (Right panels) were stained with either biotinylated rat IgG2a, κ isotype control mAb R35- 95 (Cat. no. 553928, Top panels) or biotinylated B12-1 antibody (Bottom panels) and either FITC-conjugated RA3-6B2 anti-mouse CD45R/B220, Cat. no. 553087/553088, Left panels) or FITC- conjugated 145-2C11 mAb (anti-mouse CD3e, Cat. no. 553061/553062, Right panels), followed by Streptavidin-PE (Cat. no. 554061, all panels). Flow cytometry was performed on a FACScan .
BD Pharmingen™ Biotin Rat Anti-Mouse CD127 - Biotin - Clone B12-1 - Isotype Rat IgG2a, λ - Reactivity Ms - 0.5 mg
Purification
The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.
This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Conseil sur la manipulation
The antibody was conjugated with biotin under optimum conditions, and unreacted biotin was removed.
Stock
4 °C
Stockage commentaire
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
Akashi, Kondo, Weissman: "Role of interleukin-7 in T-cell development from hematopoietic stem cells." dans: Immunological reviews, Vol. 165, pp. 13-28, (1999) (PubMed).
Fujihashi, Kawabata, Hiroi, Yamamoto, McGhee, Nishikawa, Kiyono: "Interleukin 2 (IL-2) and interleukin 7 (IL-7) reciprocally induce IL-7 and IL-2 receptors on gamma delta T-cell receptor-positive intraepithelial lymphocytes." dans: Proceedings of the National Academy of Sciences of the United States of America, Vol. 93, Issue 8, pp. 3613-8, (1996) (PubMed).
Noguchi, Nakamura, Russell, Ziegler, Tsang, Cao, Leonard: "Interleukin-2 receptor gamma chain: a functional component of the interleukin-7 receptor." dans: Science (New York, N.Y.), Vol. 262, Issue 5141, pp. 1877-80, (1994) (PubMed).
Peschon, Morrissey, Grabstein, Ramsdell, Maraskovsky, Gliniak, Park, Ziegler, Williams, Ware, Meyer, Davison: "Early lymphocyte expansion is severely impaired in interleukin 7 receptor-deficient mice." dans: The Journal of experimental medicine, Vol. 180, Issue 5, pp. 1955-60, (1994) (PubMed).
Faust, Saffran, Toksoz, Williams, Witte: "Distinctive growth requirements and gene expression patterns distinguish progenitor B cells from pre-B cells." dans: The Journal of experimental medicine, Vol. 177, Issue 4, pp. 915-23, (1993) (PubMed).
Sudo, Nishikawa, Ohno, Akiyama, Tamakoshi, Yoshida, Nishikawa: "Expression and function of the interleukin 7 receptor in murine lymphocytes." dans: Proceedings of the National Academy of Sciences of the United States of America, Vol. 90, Issue 19, pp. 9125-9, (1993) (PubMed).
Henderson, Narayanan, Collins, Dorshkind: "Status of kappa L chain gene rearrangements and c-kit and IL-7 receptor expression in stromal cell-dependent pre-B cells." dans: Journal of immunology (Baltimore, Md. : 1950), Vol. 149, Issue 6, pp. 1973-9, (1992) (PubMed).
Goodwin, Friend, Ziegler, Jerzy, Falk, Gimpel, Cosman, Dower, March, Namen: "Cloning of the human and murine interleukin-7 receptors: demonstration of a soluble form and homology to a new receptor superfamily." dans: Cell, Vol. 60, Issue 6, pp. 941-51, (1990) (PubMed).