Factor XII-dependent Contact Activation on Endothelial Cells and Binding Proteins gC1qR and Cytokeratin 1
Factor XII-dependent Contact Activation on Endothelial Cells and Binding Proteins gC1qR and Cytokeratin 1
复制标题
内皮细胞和结合蛋白 gC1qR 和细胞角蛋白 1 上的因子 XII 依赖性接触激活
作者:
K. Joseph;Y. Shibayama;B. Ghebrehiwet;A. Kaplan
Summary Although proteins of the kinin-forming pathway are bound along the surface of endothelial cells, the mechanism of activation of this proteolytic cascade is unclear. Endothelial cell surface proteins, gC1qR and cytokeratin 1, are capable of binding Factor XII and high molecular weight kininogen (HK) in a zinc-dependent reaction thus we considered the possibility that these proteins might catalyze initiation of the cascade. Incubation of Factor XII, prekallikrein, and HK with gC1qR or cytokeratin 1 leads to a zinc-dependent and Factor XII-dependent conversion of prekallikrein to kallikrein. We also demonstrate that normal plasma is capable of activating upon interaction with the cells whereas plasma deficient in Factor XII, prekallikrein and HK do not activate. Normal plasma activation was inhibitable by antibody to gC1qR and cytokeratin 1. Thus, gC1qR and cytokeratin 1, represent potential initiating surfaces for activation of the plasma kinin-forming cascade and may do so as a result of their expression along cell surfaces.
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DOI:
10.1073/pnas.95.7.3615
发表时间:
1998-03-31
影响因子:
11.1
作者:
Hasan, AAK;Zisman, T;Schmaier, AH
通讯作者:
Schmaier, AH
DOI:
10.1016/s0021-9258(18)89258-4
发表时间:
1985-04
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
P. Harpel;M. Lewin;A. Kaplan
通讯作者:
P. Harpel;M. Lewin;A. Kaplan
DOI:
10.1016/s0021-9258(18)37596-3
发表时间:
1988-11
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Alvin H. Schmaier;A. Kuo;D. Lundberg;S. Murray;D. Cines
通讯作者:
Alvin H. Schmaier;A. Kuo;D. Lundberg;S. Murray;D. Cines
影响因子:
20.3
作者:
Motta, G;Rojkjaer, R;Schmaier, AH
通讯作者:
Schmaier, AH
影响因子:
20.3
作者:
Lin,Y;Harris,RB;Yan,W;McCrae,KR;Zhang,H;Colman,RW
通讯作者:
Colman,RW