Actin enhances the activation of human neutrophil NADPH oxidase in a cell-free system

被引:40
|
作者
Morimatsu, T [1 ]
Kawagoshi, A [1 ]
Yoshida, K [1 ]
Tamura, M [1 ]
机构
[1] EHIME UNIV,FAC ENGN,DEPT APPL BIOCHEM,MATSUYAMA,EHIME 790,JAPAN
关键词
D O I
10.1006/bbrc.1996.5881
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 cell-free activation of human neutrophil NADPH oxidase (O-2(-) generating enzyme) was enhanced by exogenously added G-actin (actin monomer). When cytosol, a constituent of the system, was pretreated with DNase I, which may bind to G-actin (endogenous) to block polymerization, the activation of NADPH oxidase was significantly suppressed. The activation was also impaired when cytosol G-actin was removed by DNase I-linked resin, being completely restored by the addition of G-actin. These results suggest a role of actin and its polymerization in the activation of NADPH oxidase of human neutrophils. (C) 1997 Academic Press
引用
收藏
页码:206 / 210
页数:5
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