國家衛生研究院 NHRI:Item 3990099045/1493

NHRI > Institute of Biomedical Engineering and Nanomedicine > Jeng-Jiann Chiu > Periodical Articles > Item 3990099045/1493

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Title:	Mechanisms of induction of endothelial cell E-selectin expression by smooth muscle cells and its inhibition by shear stress
Authors:	Chiu, JJ;Chen, LJ;Lee, CI;Lee, PL;Lee, DY;Tsai, MC;Lin, CW;Usami, S;Chien, S
Contributors:	Division of Medical Engineering Research
Abstract:	E-selectin is a major adhesion molecule expressed by endothelial cells (ECs), which are exposed to shear stress and neighboring smooth muscle cells (SMCs). We investigated the mechanisms underlying the modulation of EC E-selectin expression by SMCs and shear stress. SMC coculture induced rapid and sustained increases in expression of E-selectin and phosphorylation of interleukin-1 (IL-1) receptor-associated kinase and glycoprotein-130, as well as the downstream mitogen-activated protein kinases (MAPKs) and Akt. By using specific inhibitors, dominant-negative mutants, and small interfering RNA, we demonstrated that activations of c-Jun-NH2-terminal kinase (JNK) and p38 of the MAPK pathways are critical for the coculture-induced E-selectin expression. Gel shifting and chromatin immunoprecipitation assays showed that SMC coculture increased the nuclear factor-KB (NF-KB)promoter binding activity in ECs; inhibition of NF-KB activation by p65-antisense, lactacystin, and N-acetyl-cysteine blocked the coculture-induced E-selectin promoter activity. Protein arrays and blocking assays using neutralizing antibodies demonstrated that IL-I beta and IL-6 produced by EC/SMC cocultures are major contributors to the coculture induction of EC signaling and E-selectin expression. Preshearing of ECs at 12 dynes/cm(2) inhibited the coculture-induced EC signaling and E-selectin expression. Our findings have elucidated the molecular mechanisms underlying the SMC induction of EC E-selectin expression and the shear stress protection against this SMC induction.
Keywords:	Hematology
Date:	2007-07-15
Relation:	Blood. 2007 Jul;110(2):519-528.
Link to:	http://dx.doi.org/10.1182/blood-2006-08-040097
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0006-4971&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000248112400013
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=34547118365
Appears in Collections:	[Jeng-Jiann Chiu] Periodical Articles

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