CD22 Human Monoclonal Antibody [Clone ID: hL22 (Epratuzumab)]

Specifications

Product Data
Clone Name	hL22 (Epratuzumab)
Applications	Bl, FC, IP
Reactivity	Human, Monkey
Host	Human
Clonality	Monoclonal
Immunogen	This antibody was prepared by the humanization of LL2 (EPB-2), a murine anti-CD22 IgG2a raised against Raji Burkitt lymphoma cells. Murine sequences comprise 5–10% of the molecule, with the remainder being human framework sequences, which greatly reduces the potential for immunogenicity (Traczewski, 2010).
Specificity	This antibody is specific for the 3rd Ig-like domain of human CD22 (epitope B), a cell surface glycoprotein present on mature B-cells and on many types of malignant B-cells. Epratuzumab binds to the third extracellular domain of CD22, inducing CD22 phosphorylation, resulting in negative modulation of BCR activation, and rapid CD22 internalization, leading to modulation of B-cell homing (Traczewski, 2010). Initial phase II and two terminated early phase III studies suggest that the use of this antibody to treat systemic lupus erythematosus is effective and well tolerated, but both phase III trials failed to meet primary clinical efficacy endpoints. Additionally, in vitro studies and clinical trials indicate that this antibody can be used in combination therapy with another inhibitor of B-cell activity, rituximab (anti-CD20), in the treatment of non-Hodgkin lymphoma (Traczewski, 2010).
Formulation	PBS with 0.02% Proclin 300.
Concentration	lot specific
Conjugation	Unconjugated
Storage Condition	Please store at 4°C for up to 3 months. For longer storage, aliquot and store at -20°C. Avoid freeze and thaw cycles.
Gene Name	CD22 molecule
Database Link	Entrez Gene 933 Human UniProt ID P20273
Synonyms	BL-CAM; FLJ22814; Leu-14; MGC130020; Siglec-2; SIGLEC2
Reference Data

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