CD23 Mouse Monoclonal Antibody [Clone ID: 9P25]

Specifications

Product Data
Clone Name	9P25
Applications	FC, FN
Recommend Dilution	Study of IgE binding to CD23 (Fc epsilon R2), FACS surface. Usage recommendation: *This monoclonal antibody may be used between 5-20 μg/ml. *Optimal dilution should be determined by each laboratory for each application. *Coupled antibody: to maintain RT before using.
Reactivity	Human
Host	Mouse
Clonality	Monoclonal
Immunogen	EBV transformed lymphoblastoïd cell line.
Formulation	100 μg in 200μl / 50 μg in 100 μl Tris-NaCl pH 8 State: Purified
Concentration	lot specific
Purification	QMA Hyper D ion exchange chromatography
Conjugation	Unconjugated
Storage Condition	-20°C. KEEP CONTENTS STERILE: no preservative. Purified antibodies: avoid repeated freeze/thaw cycles. Coupled antibodies: glycerol protects from freezing.
Background	CD23, also known as Fc epsilon RII, or FcεRII, is the "low affinity" receptor for IgE, an antibody isotype involved in allergy and resistance to parasites and is important in regulation of IgE levels. Human rIL-4 is able to induce the expression of low-affinity receptors for IgE (Fc epsilon RL/CD23) on resting B lymphocytes, as determined by the binding of either the anti Fc epsilon RL/CD23-specific mAb 25 or IgE. Stimulation of B cells with insolubilized anti-IgM antibody increases the number of cells expressing Fc epsilon RL/CD23 upon culturing with IL-4 and enhances the level of Fc epsilon RL/CD23 expression on these cells. Fc epsilon RL/CD23 induction is specific for IL-4 since IL-1 alpha, IL-2, IFN-gamma, B cell-derived B cell growth factor (BCGF), and a low-molecular-weight BCGF were ineffective. IFN-gamma strongly inhibited the induction of Fc epsilon RL/CD23 by IL-4. CD23 is a 45 kDa transmembrane glycoprotein associated with MHC Class II antigen, which belongs to the C-type lectin family. Expression of CD23 by B lymphocytes is up-regulated following mitogen or antigen activation. Soluble forms of CD23 are generated by proteolytic cleavage of the membrane molecule. (Defrance T. et al., J Exp Med, 1987,165, 1459 ; Bonnefoy J-Y., et al., 1996, Eur.Respir.J., 9, 635-665).
Synonyms	Fc-epsilon-RII, FCER2, CD23A, FCE2, IGEBF
Reference Data

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