CD19 (cluster of differentiation 19) is a 95kDa protein localized on the surface of nearly all B lymphocytes and is considered to be the specific surface marker for B cells.This protein belongs to the immunoglobulin (Ig) superfamily with a cytoplasmic region of 240 amino acids and is involved in the regulation of B cell function.The protein is encoded by the 7.41kb cd19 gene, mapped on the short arm of human chromosome 16p11.2. There are certain localized regions of strong net negative charges with nine tyrosine residues in the cytoplasmic region of CD19. These regions might regulate the interaction of CD19 with the proto-oncogene Vav, phosphatidylinositol-3 kinase (PI-3 kinase) and the Lyn, Lck and Fyn protein tyrosine kinases.
Immunogen
Daudi human Burkitt lymphoma cell line
Anwendung
The reagent is designed for Flow Cytometry analysis of human blood cells using 20 μL reagent / 100 μL of whole blood or 1e6 cells in a suspension. The content of a vial (2 mL) is sufficient for 100 tests.
Biochem./physiol. Wirkung
CD19 (cluster of differentiation 19) expression is restricted to normal and malignant B-lineage cells. Therefore, it is considered to be a striking target for immunotherapies aimed at B-cell malignancies. CD19 helps B lymphocytes to initiate primary immune response even at low concentrations of antigen.The encoded protein plays a crucial role in initiating intrinsic B cell signaling thresholds by regulating both B cell receptor (BCR)-dependent and independent signaling. It also functions as a biomarker for B-cell development.
Leistungsmerkmale und Vorteile
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Physikalische Form
Solution in phosphate buffered saline containing 15 mM sodium azide and 0.2% high-grade protease free BSA as a stabilizing agent.
Haftungsausschluss
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
CD19: a biomarker for B cell development, lymphoma diagnosis and therapy.
Wang K
Experimental Hematology & Oncology, 1 (2012)
The CD19-CD21 complex regulates signal transduction thresholds governing humoral immunity and autoimmunity.
Tedder TF
Immunity, 6, 107-118 (1997)
B-cell depletion and remissions of malignancy along with cytokine-associated toxicity in a clinical trial of anti-CD19 chimeric-antigen-receptor-transduced T cells.
Kochenderfer JN
Blood, 119, 2709-2720 (2012)
CD19 monoclonal antibody HD37 inhibits anti-immunoglobulin-induced B cell activation and proliferation.
Pezzutto A
Journal of Immunology, 138, 2793-2799 (1987)
The CD19/CD21 signal transducing complex of human B lymphocytes includes the target of antiproliferative antibody-1 and Leu-13 molecules.
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