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CD23 Rat anti-Mouse, Brilliant Violet 650, Clone: B3B4, BD Optibuild™

Rat Monoclonal Antibody

Manufacturer:  BD Biosciences 740456

Catalog No. BDB740456


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Description

Description

The B3B4 monoclonal antibody specifically binds to CD23, the low affinity IgE Fc receptor (Fc ε RII) expressed on mature resting conventional B lymphocytes, but not on B-1 cells (CD5+ B cells) or T lymphocytes. It does not react with high-affinity IgE receptors, as demonstrated on mouse mast cell lines. The regulation of CD23 surface expression on activated B cells appears to be complex, depending upon the mode of activation and the presence of cytokines. IgE synthesis is negatively regulated by CD23, and CD23 expression is upregulated on splenocytes in the presence of IgE. CD23 is also upregulated on follicular dendritic cells in the lymph nodes of immunized mice, and a subset of splenic dendritic cells expresses CD23. The B3B4 antibody abrogates antigen-specific IgE-dependent modulation of immune responses in normal mice. This monoclonal antibody also blocks IgE binding and eosinophil infiltration in the lung of immunized mice. Different in vivo results have been obtained when using the intact B3B4 antibody or the F(ab')2 fragments. B3B4 mAb does not cross-react with rat or human IgE Fc Receptor.

The antibody was conjugated to BD Horizon™ BV650 which is part of the BD Horizon Brilliant™ Violet family of dyes. This dye is a tandem fluorochrome of BD Horizon BV421 with an Ex Max of 405-nm and an acceptor dye with an Em Max at 650-nm. BD Horizon BV650 can be excited by the violet laser and detected in a filter used to detect APC-like dyes (eg, 660/20-nm filter). Due to the excitation and emission characteristics of the acceptor dye, there will be spillover into the APC and Alexa Fluor™ 700 detectors. However, the spillover can be corrected through compensation as with any other dye combination.

Specifications

Specifications

CD23
B3B4
Brilliant Violet 650
Aqueous buffered solution containing ≤0.09% sodium azide.
Rat
IgG2a, κ
50μg
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
Monoclonal
Flow Cytometry
0.2mg/mL
FcεRII; Fc-epsilon-RII; Fcer2a; Ly-42; Low-affinity IgE receptor; Fcer2
Affinity Purified
FcεR isolated from the mouse B hybridoma line O1.2B2
The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.
RUO
Primary
Murine
Documents
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