Mfg Part Number
Ab02210-10.3

Vector Labs Ab02210-10.3 Anti-CD19 [B4], Human IgG1, Fc Silent™, kappa (200 μg)

Quick Overview
The original antibody was generated against CD19 antigen present on human B cells.
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Product Class:Purified
Clone ID:B4
Heavy Chain Modification:Fc Silent™
Synonyms:B4 antigen; B-lymphocyte antigen CD19; B-lymphocyte surface antigen B4; Differentiation antigen CD19; T-cell surface antigen Leu-12
Amount:200 μg
Application Codes Clone:IF; FC; IHC
Shipping Temperature:Wet Ice
Buffer Composition:PBS with 0.02% Proclin 300.
Original Format:IgG1
Storage Temperature:Store at 4⁰C for up to 3 months. For longer storage, aliquot and store at -20⁰C.
Chimeric Use Statement:This chimeric human antibody was made using the variable domain sequences of the original Mouse IgG1 format, for improved compatibility with existing reagents, assays and techniques.
Specificity Statement:This antibody reacts with the B4 antigen present on the peripheral blood cells and lymphoid organs, on cell lines derived from normal and malignant B cells, and on tumor cells isolated from patients with B cell-derived neoplasms
Application Notes:This antibody is recommended to be used for the cell surface expression of the B4 antigen. It is reported that in mitogen stimulated B cells the expression of the B4 antigen increases initially with the B cell activation and then is lost with the B cell differentiation (PMID: 6408173). Conjugate of DC1 with murine and humanizsed versions of anti-B4 antibody was found to be potent and effective in selective killing of target cells in culture. It is also reported that the anti-B4-DC1 conjugate showed antitumor efficacy in an aggressive metastatic human B-cell lymphoma survival model in SCID mice and completely cured animals hearing large tumors (PMID: 7545085). Anti-B4 when conjugated with blocked ricin increased the antibody induced cell calcium mobilization and CD19 internalization. Modulation of CD19 induced by anti-B4 or anti-B4–bR was evaluated by indirect immunofluoresecence and flow cytometry (PMID: 9310487). Anti-B4-blocked ricin (anti-B4-bR) recognizes CD19-positive cells, which includes most B-cell non-Hodgkin’s lymphomas (NHLs). Phase II clinical studies of anti-B4-bR suggested that it does not actively penetrate in certain sites of the disease and is not an active agent in relapsed NHLs (PMID: 9829722)
More Information
Brand Vector Labs
UNSPSC 12161500