Plasmin Induces Cyr61 Gene Expression in Fibroblasts Via Protease-Activated Receptor-1 and p44/42 Mitogen-Activated Protein Kinase–Dependent Signaling Pathway

Author:

Pendurthi Usha R.1,Ngyuen Mylinh1,Andrade-Gordon Patricia1,Petersen Lars C.1,Rao L. Vijaya Mohan1

Affiliation:

1. From Biomedical Research (U.R.P., M.N., L.V.M.R.), The University of Texas Health Center at Tyler, Tex; Drug Discovery, Johnson & Johnson Pharmaceutical & Development, L.L.C. (P.A.), Spring House, Pa; and Health Care Discovery (L.C.P.), Novo-Nordisk, Måløv, Denmark.

Abstract

Objective— The plasminogen system has been proposed to participate in vascular remodeling and angiogenesis. Although plasmin-mediated proteolysis could contribute these processes, proteolytic targets for plasmin and their downstream effector molecules are yet to be fully defined. The aim of the present study was to elucidate potential mechanisms by which plasmin affects various cellular processes. Methods and Results— Plasmin upregulated the expression of Cyr61 , a growth factor–like gene that has been implicated in cell proliferation, adhesion, and migration. Plasmin-induced gene expression is dependent on its proteolytic activity and requires its binding to cells. Studies that used wild-type fibroblasts and fibroblasts derived from PAR-1– and PAR-2–deficient mice showed that plasmin induced Cyr61 gene expression in wild-type fibroblasts and PAR-2–deficient cells but not in PAR-1–deficient cells. Consistent with this, plasmin induced the activation of p44/42 mitogen-activated protein kinase in wild-type, PAR-2 −/− cells but not in PAR-1 −/− cells. In contrast with thrombin, plasmin failed to induce Ca 2+ signaling in fibroblasts. Conclusions— Plasmin induced an angiogenic and wound-healing promoter, Cyr61, in fibroblasts through activation of PAR-1. Plasmin-induced Cyr61 expression is mediated via the p44/42 mitogen-activated protein kinase pathway independent of Ca 2+ signaling.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Cardiology and Cardiovascular Medicine

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3