Over-expression of calpastatin inhibits calpain activation and attenuates post-infarction myocardial remodeling

Calpain is activated following myocardial infarction and ablation of calpastatin (CAST), an endogenous inhibitor of calpains, promotes left ventricular remodeling after myocardial infarction (MI). The present study aimed to investigate the effect of transgenic over-expression of CAST on the post-inf...

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Veröffentlicht in:PloS one 2015-03, Vol.10 (3), p.e0120178-e0120178
Hauptverfasser: Ye, Tingqiao, Wang, Qiang, Zhang, Yan, Song, Xiaofeng, Yang, Dachun, Li, De, Li, Dan, Su, Linan, Yang, Yongjian, Ma, Shuangtao
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container_title PloS one
container_volume 10
creator Ye, Tingqiao
Wang, Qiang
Zhang, Yan
Song, Xiaofeng
Yang, Dachun
Li, De
Li, Dan
Su, Linan
Yang, Yongjian
Ma, Shuangtao
description Calpain is activated following myocardial infarction and ablation of calpastatin (CAST), an endogenous inhibitor of calpains, promotes left ventricular remodeling after myocardial infarction (MI). The present study aimed to investigate the effect of transgenic over-expression of CAST on the post-infarction myocardial remodeling process. We established transgenic mice (TG) ubiquitously over-expressing human CAST protein and produced MI in TG mice and C57BL/6J wild-type (WT) littermates. The CAST protein expression was profoundly upregulated in the myocardial tissue of TG mice compared with WT littermates (P < 0.01). Overexpression of CAST significantly reduced the infarct size (P < 0.01) and blunted MI-induced interventricular hypertrophy, global myocardial fibrosis and collagen I and collagen III deposition, hypotension and hemodynamic disturbances at 21 days after MI. Moreover, the MI-induced up-regulation and activation of calpains were obviously attenuated in CAST TG mice. MI-induced down-regulation of CAST was partially reversed in TG mice. Additionally, the MI-caused imbalance of matrix metalloproteinases and their inhibitors was improved in TG mice. Transgenic over-expression of CAST inhibits calpain activation and attenuates post-infarction myocardial remodeling.
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genetics</topic><topic>Calpain - metabolism</topic><topic>Calpastatin</topic><topic>Cardiology</topic><topic>Cardiomegaly - enzymology</topic><topic>Cardiomegaly - genetics</topic><topic>Cardiomegaly - mortality</topic><topic>Cardiomegaly - pathology</topic><topic>Cholesterol</topic><topic>Collagen</topic><topic>Collagen (type I)</topic><topic>Collagen (type III)</topic><topic>Collagen Type I - genetics</topic><topic>Collagen Type I - metabolism</topic><topic>Collagen Type III - genetics</topic><topic>Collagen Type III - metabolism</topic><topic>Comparative analysis</topic><topic>Cytoskeletal Proteins - genetics</topic><topic>Cytoskeletal Proteins - metabolism</topic><topic>Diabetes</topic><topic>Disease Models, Animal</topic><topic>Enzyme Activation</topic><topic>Female</topic><topic>Fibrosis</topic><topic>Gene Expression Regulation</topic><topic>Genetic engineering</topic><topic>Heart</topic><topic>Heart attack</topic><topic>Heart attacks</topic><topic>Heart failure</topic><topic>House mouse</topic><topic>Humans</topic><topic>Hypertrophy</topic><topic>Hypotension</topic><topic>Isoenzymes - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ye, Tingqiao</au><au>Wang, Qiang</au><au>Zhang, Yan</au><au>Song, Xiaofeng</au><au>Yang, Dachun</au><au>Li, De</au><au>Li, Dan</au><au>Su, Linan</au><au>Yang, Yongjian</au><au>Ma, Shuangtao</au><au>Peng, Tianqing</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Over-expression of calpastatin inhibits calpain activation and attenuates post-infarction myocardial remodeling</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2015-03-18</date><risdate>2015</risdate><volume>10</volume><issue>3</issue><spage>e0120178</spage><epage>e0120178</epage><pages>e0120178-e0120178</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Calpain is activated following myocardial infarction and ablation of calpastatin (CAST), an endogenous inhibitor of calpains, promotes left ventricular remodeling after myocardial infarction (MI). The present study aimed to investigate the effect of transgenic over-expression of CAST on the post-infarction myocardial remodeling process. We established transgenic mice (TG) ubiquitously over-expressing human CAST protein and produced MI in TG mice and C57BL/6J wild-type (WT) littermates. The CAST protein expression was profoundly upregulated in the myocardial tissue of TG mice compared with WT littermates (P &lt; 0.01). Overexpression of CAST significantly reduced the infarct size (P &lt; 0.01) and blunted MI-induced interventricular hypertrophy, global myocardial fibrosis and collagen I and collagen III deposition, hypotension and hemodynamic disturbances at 21 days after MI. Moreover, the MI-induced up-regulation and activation of calpains were obviously attenuated in CAST TG mice. MI-induced down-regulation of CAST was partially reversed in TG mice. Additionally, the MI-caused imbalance of matrix metalloproteinases and their inhibitors was improved in TG mice. Transgenic over-expression of CAST inhibits calpain activation and attenuates post-infarction myocardial remodeling.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25786109</pmid><doi>10.1371/journal.pone.0120178</doi><tpages>e0120178</tpages><oa>free_for_read</oa></addata></record>
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subjects Ablation (Surgery)
Activation
Animals
Attenuation
Calpain
Calpain - genetics
Calpain - metabolism
Calpastatin
Cardiology
Cardiomegaly - enzymology
Cardiomegaly - genetics
Cardiomegaly - mortality
Cardiomegaly - pathology
Cholesterol
Collagen
Collagen (type I)
Collagen (type III)
Collagen Type I - genetics
Collagen Type I - metabolism
Collagen Type III - genetics
Collagen Type III - metabolism
Comparative analysis
Cytoskeletal Proteins - genetics
Cytoskeletal Proteins - metabolism
Diabetes
Disease Models, Animal
Enzyme Activation
Female
Fibrosis
Gene Expression Regulation
Genetic engineering
Heart
Heart attack
Heart attacks
Heart failure
House mouse
Humans
Hypertrophy
Hypotension
Isoenzymes - genetics
Isoenzymes - metabolism
Laboratory animals
Male
Matrix Metalloproteinase Inhibitors - metabolism
Matrix metalloproteinases
Matrix Metalloproteinases, Secreted - genetics
Matrix Metalloproteinases, Secreted - metabolism
Mice
Mice, Inbred C57BL
Mice, Transgenic
Myocardial infarction
Myocardial Infarction - enzymology
Myocardial Infarction - genetics
Myocardial Infarction - mortality
Myocardial Infarction - pathology
Ostomy
Overexpression
Proteins
Rodents
Survival Analysis
Transgenic animals
Transgenic mice
Ventricle
Ventricular Function, Left - genetics
Ventricular Remodeling - genetics
title Over-expression of calpastatin inhibits calpain activation and attenuates post-infarction myocardial remodeling
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