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Expression of synaptopodin in endothelial cells exposed to laminar shear stress and its role in endothelial wound healing
Author(s) -
Mun Gyeong In,
Park Soojin,
Kremerskothen Joachim,
Boo Yong Chool
Publication year - 2014
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2014.02.012
Subject(s) - wound healing , umbilical vein , synaptopodin , microbiology and biotechnology , endothelial stem cell , mediator , endothelium , chemistry , biology , immunology , biochemistry , in vitro , endocrinology , podocyte , proteinuria , kidney
We examined the hypothesis that certain actin binding proteins might be upregulated by laminar shear stress (LSS) and could contribute to endothelial wound healing. Analysis of mRNA expression profiles of human umbilical vein endothelial cells under static and LSS‐exposed conditions provided a list of LSS‐induced actin binding proteins including synaptopodin (SYNPO) whose endothelial expression has not been previously reported. Additional studies demonstrated that SYNPO is a key mediator of endothelial wound healing because small interfering RNA‐mediated suppression of SYNPO attenuated wound closure under LSS whereas overexpression of exogenous SYNPO enhanced endothelial wound closure in the absence of LSS. This study suggests that LSS‐induced actin binding proteins including SYNPO may play a critical role in the endothelial wound healing stimulated by LSS.