GPVI Antibody

GPVI Antibody: Glycoprotein VI (GP6) is a 58kD platelet membrane glycoprotein that plays a crucial role in the collagen-induced activation and aggregation of platelets. It is uniquely expressed by cells of the megakaryocytic/platelet lineage, and is a member of the immunoglobulin gene superfamily, closely related to Fc receptor gamma chain (FcRgamma) and natural killer receptors. Glycoprotein VI plays a key role in platelet procoagulant activity and subsequent thrombin and fibrin formation. This procoagulant function may contribute to arterial and venous thrombus formation. The signaling pathway involves the FcRgamma, the Src kinases (likely Fyn/Lyn), the adapter protein LAT and leads to the activation of phospholipase C gamma2. GPVI deficiency can result in bleeding disorders. Further study should reveal the extent of GPVI involvement in thrombotic disease and allow the development of alternative anti-thrombotic compounds.

GPVI antibody can be stored at 4˚ C for three months and -20˚ C, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.

At least three GPVI isoforms are known to exist; this antibody will detect the two longest isoforms. Because of its extensive glycosylation, GPVI often migrates at a higher than expected molecular weight in SDS-PAGE.

Jarvis GE, Atkinson BT, Snell DC, et al. Distinct roles of GPVI and integrin alpha (2) beta (1) in platelet shape change and aggregation induced by different collagens. Br. J. Pharmacol. 2002; 137:107-17.

Inoue O, Suzuki-Inoue K, Dean WL, et al. Integrin alpha2beta1 mediates outside-in regulation of platelet spreading on collagen through activation of Src kinases and PLCgamma2. J. Cell Biol. 2003;160:769-80.

Clemetson JM, Polgar J, Magnenat E, et al. The platelet collagen receptor glycoprotein VI is a member of the immunoglobulin superfamily closely related to Fcα R and the natural killer receptors. J Biol. Chem. 1999; 274:29019-24.

Jandrot-Perrus M, Busfield S, Lagrue AH, et al. Cloning, characterization, and functional studies of human and mouse glycoprotein VI: a platelet-specific collagen receptor from the immunoglobulin superfamily. Blood 2000; 96:1798-807.