The R1-2 antibody reacts with the integrin α4 chain (CD49d), which is expressed as a heterdimer with either of two β, β1 or β7 (also known as βp). The α4β1 integrin (VLA-4, CD49d/CD29) is expressed on most peripheral lymphocytes, thymocytes, and monocytes, while the α4β7 integrin (LPAM-1) is expressed on peripheral lymphocytes, but on only a small subset of thymocytes. These integrins mediate a variety of cell-cell and cell-matrix interactions, recognizing the ligands VCAM-1 (CD106) and fibronectin. There is evidence that levels of VLA-4 expression regulate the transendothelial migration of T lymphocytes into inflamed tissues. Integrin α4β7 also preferentially binds to the mucosal vascular addressin, MAdCAM-1. The R1-2 antibody blocks some α4 integrin-mediated binding functions. In combination with mAb 9C10 (MFR4.B) (Cat. No. 553313), binding of VLA-4 expressing cells to VCAM-1 can be almost completely inhibited.
BD Pharmingen™ Purified Rat Anti-Mouse CD49d - Purified - Clone R1-2 - Isotype Rat IgG2b, κ - 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.
Storage
4 °C
Storage Comment
Store undiluted at 4°C.
Makwana, Werner, Acosta-Saltos, Gonitel, Pararajasingam, Pararajasingham, Ruff, Rumajogee, Cuthill, Galiano, Bohatschek, Wallace, Anderson, Mayer, Behrens, Raivich: "Peripheral facial nerve axotomy in mice causes sprouting of motor axons into perineuronal central white matter: time course and molecular characterization." in: The Journal of comparative neurology, Vol. 518, Issue 5, pp. 699-721, (2010) (PubMed).
Brocke, Piercy, Steinman, Weissman, Veromaa: "Antibodies to CD44 and integrin alpha4, but not L-selectin, prevent central nervous system inflammation and experimental encephalomyelitis by blocking secondary leukocyte recruitment." in: Proceedings of the National Academy of Sciences of the United States of America, Vol. 96, Issue 12, pp. 6896-901, (1999) (PubMed).
Romanic, Graesser, Baron, Visintin, Janeway, Madri: "T cell adhesion to endothelial cells and extracellular matrix is modulated upon transendothelial cell migration." in: Laboratory investigation; a journal of technical methods and pathology, Vol. 76, Issue 1, pp. 11-23, (1997) (PubMed).
Kinashi, Springer: "Adhesion molecules in hematopoietic cells." in: Blood cells, Vol. 20, Issue 1, pp. 25-44, (1995) (PubMed).
Andrew, Berlin, Honda, Yoshino, Hamann, Holzmann, Kilshaw, Butcher: "Distinct but overlapping epitopes are involved in alpha 4 beta 7-mediated adhesion to vascular cell adhesion molecule-1, mucosal addressin-1, fibronectin, and lymphocyte aggregation." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 153, Issue 9, pp. 3847-61, (1994) (PubMed).
Baron, Reich, Visintin, Janeway: "The pathogenesis of adoptive murine autoimmune diabetes requires an interaction between alpha 4-integrins and vascular cell adhesion molecule-1." in: The Journal of clinical investigation, Vol. 93, Issue 4, pp. 1700-8, (1994) (PubMed).
Chisholm, Williams, Lobb: "Monoclonal antibodies to the integrin alpha-4 subunit inhibit the murine contact hypersensitivity response." in: European journal of immunology, Vol. 23, Issue 3, pp. 682-8, (1993) (PubMed).
Ferguson, Kupper: "Antigen-independent processes in antigen-specific immunity. A role for alpha 4 integrin." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 150, Issue 4, pp. 1172-82, (1993) (PubMed).
Rosen, Sanes, LaChance, Cunningham, Roman, Dean: "Roles for the integrin VLA-4 and its counter receptor VCAM-1 in myogenesis." in: Cell, Vol. 69, Issue 7, pp. 1107-19, (1992) (PubMed).
Kilshaw, Murant: "Expression and regulation of beta 7(beta p) integrins on mouse lymphocytes: relevance to the mucosal immune system." in: European journal of immunology, Vol. 21, Issue 10, pp. 2591-7, (1991) (PubMed).
Holzmann, McIntyre, Weissman: "Identification of a murine Peyer's patch--specific lymphocyte homing receptor as an integrin molecule with an alpha chain homologous to human VLA-4 alpha." in: Cell, Vol. 56, Issue 1, pp. 37-46, (1989) (PubMed).