The 3/23 clone reacts with CD40, a 40-50 kDa glycoprotein expressed on B lymphocytes and other antigen-presenting cells. CD40 has been reported to be transiently expressed on activated CD4+ and CD8+ T cells and in some mouse strains, the 3/23 mAb has been reported to react with 5-10 % of T lymphocytes in adult mouse, but not neonatal, spleen. CD40 plays a key role in B-cell growth and differentiation where interactions of CD40 with its ligand, CD154, are involved in the initiation, effector, and memory stages of cell-mediated immune responses. In addition, CD40 has been reported to be involved with the triggering of NK cells and NK-T cells. Ligation of CD40 with the 3/23 antibody has been reported to induce splenic B cells to express the costimulatory molecule CD86 (B7-2). In addition, although the 3/23 antibody by itself is a weak B-cell mitogen, it has been reported to synergize markedly with mitogenic anti-IgM, anti-IgD mAb or IL-4 to promote B-cell proliferation. This antibody is routinely tested by flow cytometric analysis. Other applications were tested during antibody development only or reported in the literature. Two-color analysis of the expression of CD40 on mouse spleen cells. BALB/c splenocytes were simultaneously stained with PE-conjugated anti-mouse CD3e mAb 145-2C11 (Cat. No. 553063) and biotinylated mAb 3/23 (right panel), followed by Avidin-FITC (Cat. No. 554057). Please note that staining of a T-cell subset by mAb 3/23 has not been consistently observed. Flow cytometry was performed on a BD FACScan™ flow cytometry system.
BD Pharmingen™ Biotin Rat Anti-Mouse CD40 - Biotin - Clone 3/23 - Isotype Rat IgG2a, 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.
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.
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