Wortmannin inhibits store-mediated calcium entry and protein tyrosine phosphorylation in human platelets

被引：16

作者：

Jenner, S ^{[1
]}

Farndale, RW ^{[1
]}

Sage, SO ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,DEPT BIOCHEM,CAMBRIDGE CB2 1QW,ENGLAND

来源：

FEBS LETTERS | 1996年 / 381卷 / 03期

关键词：

thapsigargin; tyrosine phosphorylation; store-mediated calcium influx; Wortmannin; platelet;

D O I：

10.1016/0014-5793(96)00130-5

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The effects of the WT on store-mediated Ca2+ entry and protein tyrosine phosphorylation were investigated in fura-2-loaded human platelets, Wortmannin (2 mu M) attenuated the rise in [Ca2+](i) caused by Ca2+ entry,while having no effect on the mobilisation of Ca2+ from internal stores. It also reduced store-depletion-evoked protein tyrosine phosphorylation. These findings demonstrate that WT is an inhibitor of tyrosine phosphorylation and store-mediated calcium entry and provide further evidence for the involvement of a tyrosine phosphorylation step in the link between Ca2+ store depletion and Ca2+ influx in human platelets.

引用

页码：249 / 251

页数：3

共 20 条

[1] CYTOCHROME-P-450 MAY LINK INTRACELLULAR CA2+ STORES WITH PLASMA-MEMBRANE CA2+ INFLUX [J].