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Inhibition of PKR protects against H(2)O(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation
Reactive oxygenation species (ROS) generated from reperfusion results in cardiac injury through apoptosis and inflammation, while PKR has the ability to promote apoptosis and inflammation. The aim of the study was to investigate whether PKR is involved in hydrogen peroxide (H(2)O(2)) induced neonata...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5144063/ https://www.ncbi.nlm.nih.gov/pubmed/27929137 http://dx.doi.org/10.1038/srep38753 |
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author | Wang, Yongyi Men, Min Xie, Bo Shan, Jianggui Wang, Chengxi Liu, Jidong Zheng, Hui Yang, Wengang Xue, Song Guo, Changfa |
author_facet | Wang, Yongyi Men, Min Xie, Bo Shan, Jianggui Wang, Chengxi Liu, Jidong Zheng, Hui Yang, Wengang Xue, Song Guo, Changfa |
author_sort | Wang, Yongyi |
collection | PubMed |
description | Reactive oxygenation species (ROS) generated from reperfusion results in cardiac injury through apoptosis and inflammation, while PKR has the ability to promote apoptosis and inflammation. The aim of the study was to investigate whether PKR is involved in hydrogen peroxide (H(2)O(2)) induced neonatal cardiac myocytes (NCM) injury. In our study, NCM, when exposed to H(2)O(2), resulted in persistent activation of PKR due to NCM endogenous RNA. Inhibition of PKR by 2-aminopurine (2-AP) or siRNA protected against H(2)O(2) induced apoptosis and injury. To elucidate the mechanism, we revealed that inhibition of PKR alleviated H(2)O(2) induced apoptosis companied by decreased caspase3/7 activity, BAX and caspase-3 expression. We also revealed that inhibition of PKR suppressed H(2)O(2) induced NFκB pathway and NLRP3 activation. Finally, we found ADAR1 mRNA and protein expression were both induced after H(2)O(2) treatment through STAT-2 dependent pathway. By gain and loss of ADAR1 expression, we confirmed ADAR1 modulated PKR activity. Therefore, we concluded inhibition of PKR protected against H(2)O(2)-induced injury by attenuating apoptosis and inflammation. A self-preservation mechanism existed in NCM that ADAR1 expression is induced by H(2)O(2) to limit PKR activation simultaneously. These findings identify a novel role for PKR/ADAR1 in myocardial reperfusion injury. |
format | Online Article Text |
id | pubmed-5144063 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-51440632016-12-16 Inhibition of PKR protects against H(2)O(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation Wang, Yongyi Men, Min Xie, Bo Shan, Jianggui Wang, Chengxi Liu, Jidong Zheng, Hui Yang, Wengang Xue, Song Guo, Changfa Sci Rep Article Reactive oxygenation species (ROS) generated from reperfusion results in cardiac injury through apoptosis and inflammation, while PKR has the ability to promote apoptosis and inflammation. The aim of the study was to investigate whether PKR is involved in hydrogen peroxide (H(2)O(2)) induced neonatal cardiac myocytes (NCM) injury. In our study, NCM, when exposed to H(2)O(2), resulted in persistent activation of PKR due to NCM endogenous RNA. Inhibition of PKR by 2-aminopurine (2-AP) or siRNA protected against H(2)O(2) induced apoptosis and injury. To elucidate the mechanism, we revealed that inhibition of PKR alleviated H(2)O(2) induced apoptosis companied by decreased caspase3/7 activity, BAX and caspase-3 expression. We also revealed that inhibition of PKR suppressed H(2)O(2) induced NFκB pathway and NLRP3 activation. Finally, we found ADAR1 mRNA and protein expression were both induced after H(2)O(2) treatment through STAT-2 dependent pathway. By gain and loss of ADAR1 expression, we confirmed ADAR1 modulated PKR activity. Therefore, we concluded inhibition of PKR protected against H(2)O(2)-induced injury by attenuating apoptosis and inflammation. A self-preservation mechanism existed in NCM that ADAR1 expression is induced by H(2)O(2) to limit PKR activation simultaneously. These findings identify a novel role for PKR/ADAR1 in myocardial reperfusion injury. Nature Publishing Group 2016-12-08 /pmc/articles/PMC5144063/ /pubmed/27929137 http://dx.doi.org/10.1038/srep38753 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Wang, Yongyi Men, Min Xie, Bo Shan, Jianggui Wang, Chengxi Liu, Jidong Zheng, Hui Yang, Wengang Xue, Song Guo, Changfa Inhibition of PKR protects against H(2)O(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation |
title | Inhibition of PKR protects against H(2)O(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation |
title_full | Inhibition of PKR protects against H(2)O(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation |
title_fullStr | Inhibition of PKR protects against H(2)O(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation |
title_full_unstemmed | Inhibition of PKR protects against H(2)O(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation |
title_short | Inhibition of PKR protects against H(2)O(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation |
title_sort | inhibition of pkr protects against h(2)o(2)-induced injury on neonatal cardiac myocytes by attenuating apoptosis and inflammation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5144063/ https://www.ncbi.nlm.nih.gov/pubmed/27929137 http://dx.doi.org/10.1038/srep38753 |
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