USP22 Protects Against Myocardial Ischemia–Reperfusion Injury via the SIRT1-p53/SLC7A11–Dependent Inhibition of Ferroptosis–Induced Cardiomyocyte Death

Myocardial ischemia–reperfusion (MI/R) injury is characterized by iron deposition and reactive oxygen species production, which can induce ferroptosis. Ferroptosis has also been proposed to promote cardiomyocyte death. The current study sought to define the mechanism governing cardiomyocyte death in...

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Main Authors: Shuxian Ma, Linyan Sun, Wenhao Wu, Jiangli Wu, Zhangnan Sun, Jianjun Ren
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-10-01
Series:Frontiers in Physiology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fphys.2020.551318/full
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author Shuxian Ma
Linyan Sun
Wenhao Wu
Jiangli Wu
Zhangnan Sun
Jianjun Ren
author_facet Shuxian Ma
Linyan Sun
Wenhao Wu
Jiangli Wu
Zhangnan Sun
Jianjun Ren
author_sort Shuxian Ma
collection DOAJ
description Myocardial ischemia–reperfusion (MI/R) injury is characterized by iron deposition and reactive oxygen species production, which can induce ferroptosis. Ferroptosis has also been proposed to promote cardiomyocyte death. The current study sought to define the mechanism governing cardiomyocyte death in MI/R injury. An animal model of MI/R was established by ligation and perfusion of the left anterior descending coronary artery, and a cellular model of IR was constructed in cardiomyocytes. ChIP assay was then conducted to determine the interaction among USP22, SIRT1, p53, and SLC7A11. Loss- and gain-of-function assays were also conducted to determine the in vivo and in vitro roles of USP22, SIRT1, and SLC7A11. The infarct size and pathological changes of myocardial tissue were observed using TCC and hematoxylin–eosin staining, and the levels of cardiac function– and myocardial injury–related factors of rats were determined. Cardiomyocyte viability and apoptosis were evaluated in vitro, followed by detection of ferroptosis-related indicators (glutathione (GSH), reactive oxygen species, lipid peroxidation, and iron accumulation). USP22, SIRT1, and SLC7A11 expressions were found to be down-regulated, whereas p53 was highly expressed during MI/R injury. USP22, SIRT1, or SLC7A11 overexpression reduced the infarct size and ameliorated pathological conditions, cardiac function, as evidenced by reduced maximum pressure, ejection fraction, maximum pressure rate, and myocardial injury characterized by lower creatine phosphokinase and lactate dehydrogenase levels in vivo. Moreover, USP22, SIRT1, or SLC7A11 elevation contributed to enhanced cardiomyocyte viability and attenuated ferroptosis-induced cell death in vitro, accompanied by increased GSH levels, as well as decreased reactive oxygen species production, lipid peroxidation, and iron accumulation. Together, these results demonstrate that USP22 overexpression could inhibit ferroptosis-induced cardiomyocyte death to protect against MI/R injury via the SIRT1/p53/SLC7A11 association.
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spelling doaj.art-a96bc0f836914e5caeec5e0337b02fc22022-12-21T19:07:20ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2020-10-011110.3389/fphys.2020.551318551318USP22 Protects Against Myocardial Ischemia–Reperfusion Injury via the SIRT1-p53/SLC7A11–Dependent Inhibition of Ferroptosis–Induced Cardiomyocyte DeathShuxian Ma0Linyan Sun1Wenhao Wu2Jiangli Wu3Zhangnan Sun4Jianjun Ren5Department of Anesthesiology, The Second Hospital of Hebei Medical University, Shijiazhuang, ChinaDepartment of Anesthesiology, Qingyun People’s Hospital, Qingyun, ChinaDepartment of Anesthesiology, The Second Hospital of Hebei Medical University, Shijiazhuang, ChinaDepartment of Anesthesiology, The Second Hospital of Hebei Medical University, Shijiazhuang, ChinaDepartment of Anesthesiology, The Second Hospital of Hebei Medical University, Shijiazhuang, ChinaDepartment of Anesthesiology, The Second Hospital of Hebei Medical University, Shijiazhuang, ChinaMyocardial ischemia–reperfusion (MI/R) injury is characterized by iron deposition and reactive oxygen species production, which can induce ferroptosis. Ferroptosis has also been proposed to promote cardiomyocyte death. The current study sought to define the mechanism governing cardiomyocyte death in MI/R injury. An animal model of MI/R was established by ligation and perfusion of the left anterior descending coronary artery, and a cellular model of IR was constructed in cardiomyocytes. ChIP assay was then conducted to determine the interaction among USP22, SIRT1, p53, and SLC7A11. Loss- and gain-of-function assays were also conducted to determine the in vivo and in vitro roles of USP22, SIRT1, and SLC7A11. The infarct size and pathological changes of myocardial tissue were observed using TCC and hematoxylin–eosin staining, and the levels of cardiac function– and myocardial injury–related factors of rats were determined. Cardiomyocyte viability and apoptosis were evaluated in vitro, followed by detection of ferroptosis-related indicators (glutathione (GSH), reactive oxygen species, lipid peroxidation, and iron accumulation). USP22, SIRT1, and SLC7A11 expressions were found to be down-regulated, whereas p53 was highly expressed during MI/R injury. USP22, SIRT1, or SLC7A11 overexpression reduced the infarct size and ameliorated pathological conditions, cardiac function, as evidenced by reduced maximum pressure, ejection fraction, maximum pressure rate, and myocardial injury characterized by lower creatine phosphokinase and lactate dehydrogenase levels in vivo. Moreover, USP22, SIRT1, or SLC7A11 elevation contributed to enhanced cardiomyocyte viability and attenuated ferroptosis-induced cell death in vitro, accompanied by increased GSH levels, as well as decreased reactive oxygen species production, lipid peroxidation, and iron accumulation. Together, these results demonstrate that USP22 overexpression could inhibit ferroptosis-induced cardiomyocyte death to protect against MI/R injury via the SIRT1/p53/SLC7A11 association.https://www.frontiersin.org/articles/10.3389/fphys.2020.551318/fullubiquitin specific peptidase 22myocardial ischemia–reperfusion injurysirtuin-1p53solute carrier family 7 member 11ferroptosis
spellingShingle Shuxian Ma
Linyan Sun
Wenhao Wu
Jiangli Wu
Zhangnan Sun
Jianjun Ren
USP22 Protects Against Myocardial Ischemia–Reperfusion Injury via the SIRT1-p53/SLC7A11–Dependent Inhibition of Ferroptosis–Induced Cardiomyocyte Death
Frontiers in Physiology
ubiquitin specific peptidase 22
myocardial ischemia–reperfusion injury
sirtuin-1
p53
solute carrier family 7 member 11
ferroptosis
title USP22 Protects Against Myocardial Ischemia–Reperfusion Injury via the SIRT1-p53/SLC7A11–Dependent Inhibition of Ferroptosis–Induced Cardiomyocyte Death
title_full USP22 Protects Against Myocardial Ischemia–Reperfusion Injury via the SIRT1-p53/SLC7A11–Dependent Inhibition of Ferroptosis–Induced Cardiomyocyte Death
title_fullStr USP22 Protects Against Myocardial Ischemia–Reperfusion Injury via the SIRT1-p53/SLC7A11–Dependent Inhibition of Ferroptosis–Induced Cardiomyocyte Death
title_full_unstemmed USP22 Protects Against Myocardial Ischemia–Reperfusion Injury via the SIRT1-p53/SLC7A11–Dependent Inhibition of Ferroptosis–Induced Cardiomyocyte Death
title_short USP22 Protects Against Myocardial Ischemia–Reperfusion Injury via the SIRT1-p53/SLC7A11–Dependent Inhibition of Ferroptosis–Induced Cardiomyocyte Death
title_sort usp22 protects against myocardial ischemia reperfusion injury via the sirt1 p53 slc7a11 dependent inhibition of ferroptosis induced cardiomyocyte death
topic ubiquitin specific peptidase 22
myocardial ischemia–reperfusion injury
sirtuin-1
p53
solute carrier family 7 member 11
ferroptosis
url https://www.frontiersin.org/articles/10.3389/fphys.2020.551318/full
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