The rat anti-mouse CD49b monoclonal antibody (clone DX5) specifically binds to the integrin α2 chain (CD49b). CD49b is a 150 kDa transmembrane glycoprotein that non-covalently associates with CD29 (integrin β1) to form the integrin α2β1 complex known as VLA-2. The rat anti-mouse CD49b antibody (clone DX5) has been reported to identify the majority of NK cells and a small T-cell subpopulation in most mouse strains (e.g., A/J, AKR, BALB/c, C3H/HeJ, C57BL/6, C57BL/10, C57BR, C58, CBA/Ca, DBA/1, DBA/2, SJL, SWR, 129/J, but not NOD). The DX5 antibody also recognizes platelets that express high levels of CD49b. Multiparameter flow cytometric analysis has demonstrated that most lymphocytes which express NK-1.1 (NKR-P1B and NKR-P1C), as detectable by mouse anti-mouse NK-1.1 antibody (clone PK136), also express the DX5 antigen. Small DX5+ NK-1.1- and DX5- NK-1.1+ cell subsets are found, especially among the CD3-positive cell population. Some CD49b+ NK cells have been reported to gradually lose reactivity with the rat anti-mouse CD49b antibody (clone DX5) when cultured in the presence of recombinant human IL-2. The resulting DX5-negative cells have weakened cytotoxic activity when compared to the remaining DX5+ cells. This indicates that the DX5 antibody distinguishes functional subsets of NK cells. No activation or blocking activity of the rat anti-mouse antibody (clone DX5) has been observed. Staining of splenic NK cells with this antibody reportedly can be blocked by hamster anti-mouse CD49b antibody (clone HMα2). Detection of NK cells with monoclonal antibodies. Freshly isolated splenocytes from a C57BL/6 mouse were simultaneously stained with FITC Mouse anti-Mouse NK-1.1 antibody (Cat. No. 553164, both panels) and Biotin Rat anti-Mouse CD49b antibody (clone DX5) (right panel) followed by PE-Streptavidin (Cat. No. 554061, both panels). Flow cytometry was performed on a BD FACScan™ instrument .
BD Pharmingen™ Biotin Rat Anti-Mouse CD49b - Biotin - Clone DX5 - Isotype Rat IgM, κ - Reactivity Ms - 0.5 mg
Aufreinigung
The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.
Immunogen
Mouse (C57BL/6) NK1.1+ cells propagated with rIL-2
This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Handhabung
The antibody was conjugated with biotin under optimum conditions, and unreacted biotin was removed.
Lagerung
4 °C
Informationen zur Lagerung
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
Arase, Saito, Phillips, Lanier: "Cutting edge: the mouse NK cell-associated antigen recognized by DX5 monoclonal antibody is CD49b (alpha 2 integrin, very late antigen-2)." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 167, Issue 3, pp. 1141-4, (2001) (PubMed).
Ortaldo, Winkler-Pickett, Mason, Mason: "The Ly-49 family: regulation of cytotoxicity and cytokine production in murine CD3+ cells." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 160, Issue 3, pp. 1158-65, (1998) (PubMed).
Moore, von Freeden-Jeffry, Murray, Zlotnik: "Inhibition of gamma delta T cell development and early thymocyte maturation in IL-7 -/- mice." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 157, Issue 6, pp. 2366-73, (1996) (PubMed).