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Sun Y, Chu S, Wang R, Xia R, Sun M, Gao Z, Xia Z, Zhang Y, Dong S, Wang T. Non-coding RNAs modulate pyroptosis in myocardial ischemia-reperfusion injury: A comprehensive review. Int J Biol Macromol 2024; 257:128558. [PMID: 38048927 DOI: 10.1016/j.ijbiomac.2023.128558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/17/2023] [Accepted: 11/30/2023] [Indexed: 12/06/2023]
Abstract
Reperfusion therapy is the most effective treatment for acute myocardial infarction. However, reperfusion itself can also cause cardiomyocytes damage. Pyroptosis has been shown to be an important mode of myocardial cell death during ischemia-reperfusion. Non-coding RNAs (ncRNAs) play critical roles in regulating pyroptosis. The regulation of pyroptosis by microRNAs, long ncRNAs, and circular RNAs may represent a new mechanism of myocardial ischemia-reperfusion injury. This review summarizes the currently known regulatory roles of ncRNAs in myocardial ischemia-reperfusion injury and interactions between ncRNAs. Potential therapeutic strategies using ncRNA modulation are also discussed.
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Affiliation(s)
- Yi Sun
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Shujuan Chu
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Rong Wang
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Rui Xia
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Meng Sun
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Zhixiong Gao
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Zhengyuan Xia
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Yan Zhang
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Siwei Dong
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China.
| | - Tingting Wang
- Department of Anesthesiology, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesia and Critical Care Medicine, Union Hosptial, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China.
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Li Z, Xing J. Contribution and therapeutic value of mitophagy in cerebral ischemia-reperfusion injury after cardiac arrest. Biomed Pharmacother 2023; 167:115492. [PMID: 37716121 DOI: 10.1016/j.biopha.2023.115492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/18/2023] Open
Abstract
Cardiopulmonary resuscitation and related life support technologies have improved substantially in recent years; however, mortality and disability rates from cardiac arrest (CA) remain high and are closely associated with the high incidence of cerebral ischemia-reperfusion injury (CIRI), which is explained by a "double-hit" model (i.e., resulting from both ischemia and reperfusion). Mitochondria are important power plants in the cell and participate in various biochemical processes, such as cell differentiation and signaling in eukaryotes. Various mitochondrial processes, including energy metabolism, calcium homeostasis, free radical production, and apoptosis, are involved in several important stages of the progression and development of CIRI. Mitophagy is a key mechanism of the endogenous removal of damaged mitochondria to maintain organelle function and is a critical target for CIRI treatment after CA. Mitophagy also plays an essential role in attenuating ischemia-reperfusion in other organs, particularly during post-cardiac arrest myocardial dysfunction. Regulation of mitophagy may influence necroptosis (a programmed cell death pathway), which is the main endpoint of organ ischemia-reperfusion injury. In this review, we summarize the main signaling pathways related to mitophagy and their associated regulatory proteins. New therapeutic methods and drugs targeting mitophagy in ischemia-reperfusion animal models are also discussed. In-depth studies of the mechanisms underlying the regulation of mitophagy will enhance our understanding of the damage and repair processes in CIRI after CA, thereby contributing to the development of new therapeutic strategies.
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Affiliation(s)
- Zheng Li
- Department of Emergency Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
| | - Jihong Xing
- Department of Emergency Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
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Shao JL, Wang LJ, Xiao J, Yang JF. Non-coding RNAs: The potential biomarker or therapeutic target in hepatic ischemia-reperfusion injury. World J Gastroenterol 2023; 29:4927-4941. [PMID: 37731999 PMCID: PMC10507504 DOI: 10.3748/wjg.v29.i33.4927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/22/2023] [Accepted: 08/18/2023] [Indexed: 09/01/2023] Open
Abstract
Hepatic ischemia-reperfusion injury (HIRI) is the major complication of liver surgery and liver transplantation, that may increase the postoperative morbidity, mortality, tumor progression, and metastasis. The underlying mechanisms have been extensively investigated in recent years. Among these, oxidative stress, inflammatory responses, immunoreactions, and cell death are the most studied. Non-coding RNAs (ncRNAs) are defined as the RNAs that do not encode proteins, but can regulate gene expressions. In recent years, ncRNAs have emerged as research hotspots for various diseases. During the progression of HIRI, ncRNAs are differentially expressed, while these dysregulations of ncRNAs, in turn, have been verified to be related to the above pathological processes involved in HIRI. ncRNAs mainly contain microRNAs, long ncRNAs, and circular RNAs, some of which have been reported as biomarkers for early diagnosis or assessment of liver damage severity, and as therapeutic targets to attenuate HIRI. Here, we briefly summarize the common pathophysiology of HIRI, describe the current knowledge of ncRNAs involved in HIRI in animal and human studies, and discuss the potential of ncRNA-targeted therapeutic strategies. Given the scarcity of clinical trials, there is still a long way to go from pre-clinical to clinical application, and further studies are needed to uncover their potential as therapeutic targets.
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Affiliation(s)
- Jia-Li Shao
- Department of Anesthesiology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
| | - Li-Juan Wang
- Department of Anesthesiology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
| | - Ji Xiao
- Department of Anesthesiology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
| | - Jin-Feng Yang
- Department of Anesthesiology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
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Tu W, Li L, Yi M, Chen J, Wang X, Sun Y. Dapagliflozin attenuates high glucose-and hypoxia/reoxygenation-induced injury via activating AMPK/mTOR-OPA1-mediated mitochondrial autophagy in H9c2 cardiomyocytes. Arch Physiol Biochem 2023:1-11. [PMID: 37655809 DOI: 10.1080/13813455.2023.2252200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/07/2023] [Accepted: 08/21/2023] [Indexed: 09/02/2023]
Abstract
This study investigated the protective effect of dapagliflozin on H9c2 cardiomyocyte function under high glucose and hypoxia/reoxygenation (HG-H/R) conditions and identified the underlying molecular mechanisms. Dapagliflozin reduced the level of lactate dehydrogenase and reactive oxygen species in cardiomyocytes under HG-H/R conditions and was accompanied by a decrease in caspase-3/9 activity. In addition, Dapagliflozin significantly reduced mitochondrial permeability transition pore opening and increased ATP content, accompanied by upregulation of OPA1 with autophagy-related protein molecules and activation of the AMPK/mTOR signalling pathway in HG-H/R treated cardiomyocytes. OPA1 knockdown or compound C treatment attenuated the protective effects of dapagliflozin on the cardiomyocytes under HG-H/R conditions. Downregulation of OPA1 expression increased mitochondrial intolerance in cardiomyocytes during HG-H/R injury and the AMPK-mTOR-autophagy signalling is a key mechanism for protecting mitochondrial function and reducing cardiomyocyte apoptosis. Collectively, dapagliflozin exerted protective effects on the cardiomyocytes under HG-H/R conditions. Dapagliflozin attenuated myocardial HG-H/R injury by activating AMPK/mTOR-OPA1-mediated mitochondrial autophagy.
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Affiliation(s)
- Weiling Tu
- Department of Cardiology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, P.R. China
| | - Liang Li
- Department of Cardiology, Shenzhen Bao'an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, P.R. China
| | - Ming Yi
- Department of Cardiology, The Second Affiliated Integrated Chinese and Western Medicine Hospital of Hunan University of Chinese Medicine, Liuyang Hospital of Traditional Chinese Medicine, Liuyang, P.R. China
| | - Junyu Chen
- Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen Sun Yat-sen Cardiovascular Hospital, Shenzhen, P.R. China
| | - Xiaoqing Wang
- Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen Sun Yat-sen Cardiovascular Hospital, Shenzhen, P.R. China
| | - Yan Sun
- Department of Endocrinology, Southern University of Science and Technology Hospital, Shenzhen, P.R. China
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Mu N, Zhang T, Zhu Y, Lu B, Zheng Q, Duan J. The mechanism by which miR-494-3p regulates PGC1-α-mediated inhibition of mitophagy in cardiomyocytes and alleviation of myocardial ischemia-reperfusion injury. BMC Cardiovasc Disord 2023; 23:204. [PMID: 37085803 PMCID: PMC10122381 DOI: 10.1186/s12872-023-03226-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 04/04/2023] [Indexed: 04/23/2023] Open
Abstract
OBJECTIVE The purpose of this study was to explore whether miR-494-3p inhibits the occurrence of mitochondrial autophagy in cardiomyocytes by inhibiting the expression of PGC1-α and to supplement the theoretical basis for the role of autophagy in cardiac injury induced by hypoxia/reperfusion (H/R). METHODS The expression of miR-494-3p was detected by RT‒qPCR, and the expression of PGC1-α, autophagy-related proteins (LC3, Beclin 1), apoptosis-related proteins (Bax and Bcl-2), PINK1/Parkin signaling pathway-related proteins (PINK1, Parkin) and mitochondrial change-related proteins (Mfn1, Mfn2, OPA1) was detected by Western blotting. The changes in mitochondrial membrane potential were detected by JC-1 staining (ΔΨm). The formation of autophagosomes was observed by transmission electron microscopy. Cell proliferation activity was detected by CCK-8, and cell apoptosis was detected by flow cytometry. A dual-luciferase gene reporter assay identified a targeted binding site between miR-494-3p and PGC1-α. RESULTS The results showed that miR-494-3p and PGC1-α were differentially expressed in H/R cardiomyocytes; that is, the expression of miR-494-3p was downregulated, and the expression of PGC1-α was upregulated. In addition, mitochondrial autophagy occurred in H/R cardiomyocytes. That is, LC3-II/LC3-I, Beclin 1, PINK1, and Parkin expression was upregulated, Mfn1, Mfn2, and OPA1 expression was downregulated, and the mitochondrial membrane potential was decreased. The transfection of miR-494-3p mimic can significantly improve the cell proliferation activity of cardiomyocytes and inhibit the occurrence of cardiomyocyte apoptosis and autophagy, while the transfection of miR-494-3p inhibitor has the opposite result. After transfection of the miR-494-3p mimic, treatment with autophagy inhibitors and activators changed the effects of miR-494-3p on cardiomyocyte proliferation and apoptosis. At the same time, the overexpression of PGC1-α reversed the promoting effect of miR-494-3p on cardiomyocyte proliferation and the inhibitory effect on apoptosis and autophagy. CONCLUSION MiR-494-3p can target and negatively regulate the expression of PGC1-α to inhibit mitophagy in cardiomyocytes.
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Affiliation(s)
- Ninghui Mu
- General Practice Department, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Tong Zhang
- General Practice Department, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Ying Zhu
- General Practice Department, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Bingtuan Lu
- General Practice Department, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Qi Zheng
- General Practice Department, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Jinlan Duan
- Geriatric Medicine Department, The First People's Hospital of Yunnan Province, No. 157, Jinbi Road, Xishan District, Kunming, Yunnan, 650032, China.
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Alim Al-Bari A, Ito Y, Thomes PG, Menon MB, García-Macia M, Fadel R, Stadlin A, Peake N, Faris ME, Eid N, Klionsky DJ. Emerging mechanistic insights of selective autophagy in hepatic diseases. Front Pharmacol 2023; 14:1149809. [PMID: 37007026 PMCID: PMC10060854 DOI: 10.3389/fphar.2023.1149809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 02/23/2023] [Indexed: 03/18/2023] Open
Abstract
Macroautophagy (hereafter referred to as autophagy), a highly conserved metabolic process, regulates cellular homeostasis by degrading dysfunctional cytosolic constituents and invading pathogens via the lysosomal system. In addition, autophagy selectively recycles specific organelles such as damaged mitochondria (via mitophagy), and lipid droplets (LDs; via lipophagy) or eliminates specialized intracellular pathogenic microorganisms such as hepatitis B virus (HBV) and coronaviruses (via virophagy). Selective autophagy, particularly mitophagy, plays a key role in the preservation of healthy liver physiology, and its dysfunction is connected to the pathogenesis of a wide variety of liver diseases. For example, lipophagy has emerged as a defensive mechanism against chronic liver diseases. There is a prominent role for mitophagy and lipophagy in hepatic pathologies including non-alcoholic fatty liver disease (NAFLD), hepatocellular carcinoma (HCC), and drug-induced liver injury. Moreover, these selective autophagy pathways including virophagy are being investigated in the context of viral hepatitis and, more recently, the coronavirus disease 2019 (COVID-19)-associated hepatic pathologies. The interplay between diverse types of selective autophagy and its impact on liver diseases is briefly addressed. Thus, modulating selective autophagy (e.g., mitophagy) would seem to be effective in improving liver diseases. Considering the prominence of selective autophagy in liver physiology, this review summarizes the current understanding of the molecular mechanisms and functions of selective autophagy (mainly mitophagy and lipophagy) in liver physiology and pathophysiology. This may help in finding therapeutic interventions targeting hepatic diseases via manipulation of selective autophagy.
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Affiliation(s)
- Abdul Alim Al-Bari
- Department of Pharmacy, Faculty of Science, University of Rajshahi, Rajshahi, Bangladesh
| | - Yuko Ito
- Department of General and Gastroenterological Surgery, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Paul G. Thomes
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Manoj B. Menon
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Marina García-Macia
- Institute of Functional Biology and Genomics (IBFG), Universidad de Salamanca-CSIC, Institute of Biomedical Research of Salamanca (IBSAL), Hospital Universitario de Salamanca, Salamanca, Spain
| | - Raouf Fadel
- Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, Al Manama, Bahrain
| | - Alfreda Stadlin
- Basic Medical Sciences Department, College of Medicine, Ajman university, Ajman, United Arab Emirates
| | - Nicholas Peake
- Biomolecular Sciences Research Centre, Sheffield Hallam University, Sheffield, United Kingdom
| | - MoezAlIslam Ezzat Faris
- Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates
| | - Nabil Eid
- Department of Anatomy, Division of Human Biology, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
- *Correspondence: Nabil Eid,
| | - Daniel J. Klionsky
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of MI, Ann Arbor, MI, United States
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Zhu SF, Yuan W, Du YL, Wang BL. Research progress of lncRNA and miRNA in hepatic ischemia-reperfusion injury. Hepatobiliary Pancreat Dis Int 2023; 22:45-53. [PMID: 35934611 DOI: 10.1016/j.hbpd.2022.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 07/18/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hepatic ischemia-reperfusion injury (HIRI) is a common complication of liver surgeries, such as hepatectomy and liver transplantation. In recent years, several non-coding RNAs (ncRNAs) including long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) have been identified as factors involved in the pathological progression of HIRI. In this review, we summarized the latest research on lncRNAs, miRNAs and the lncRNA-miRNA regulatory networks in HIRI. DATA SOURCES The PubMed and Web of Science databases were searched for articles published up to December 2021 using the following keywords: "hepatic ischemia-reperfusion injury", "lncRNA", "long non-coding RNA", "miRNA" and "microRNA". The bibliography of the selected articles was manually screened to identify additional studies. RESULTS The mechanism of HIRI is complex, and involves multiple lncRNAs and miRNAs. The roles of lncRNAs such as AK139328, CCAT1, MALAT1, TUG1 and NEAT1 have been established in HIRI. In addition, numerous miRNAs are associated with apoptosis, autophagy, oxidative stress and cellular inflammation that accompany HIRI pathogenesis. Based on the literature, we conclude that four lncRNA-miRNA regulatory networks mediate the pathological progression of HIRI. Furthermore, the expression levels of some lncRNAs and miRNAs undergo significant changes during the progression of HIRI, and thus are potential prognostic markers and therapeutic targets. CONCLUSIONS Complex lncRNA-miRNA-mRNA networks regulate HIRI progression through mutual activation and antagonism. It is necessary to screen for more HIRI-associated lncRNAs and miRNAs in order to identify novel therapeutic targets.
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Affiliation(s)
- Shan-Fei Zhu
- Department of Hepatobiliary Surgery, Guangzhou Red Cross Hospital of Jinan University, Guangzhou 510220, China
| | - Wei Yuan
- Department of Hepatobiliary Surgery, Guangzhou Red Cross Hospital of Jinan University, Guangzhou 510220, China
| | - Yong-Liang Du
- Department of Hepatobiliary Surgery, Guangzhou Red Cross Hospital of Jinan University, Guangzhou 510220, China
| | - Bai-Lin Wang
- Department of Hepatobiliary Surgery, Guangzhou Red Cross Hospital of Jinan University, Guangzhou 510220, China.
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Li S, He J, Xu H, Yang J, Luo Y, Song W, Qiao B, Zhang H. Autophagic activation of IRF-1 aggravates hepatic ischemia-reperfusion injury via JNK signaling. MedComm (Beijing) 2021; 2:91-100. [PMID: 34766137 PMCID: PMC8491206 DOI: 10.1002/mco2.58] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 01/11/2021] [Accepted: 01/14/2021] [Indexed: 12/12/2022] Open
Abstract
Increasing evidence has accrued indicating that autophagy is associated with hepatic ischemia-reperfusion injury (IRI). This report demonstrates that interferon regulatory factor-1 (IRF-1) was upregulated in response to hepatic IRI and was associated with autophagic activation. As a result of these processes, there is an aggravation of liver damage, effects that can be offset by IRF-1 depletion. In addition, these effects of IRF-1 are associated with JNK pathway activation followed by increases in Beclin1 protein levels. This JNK-induced autophagic cell death then leads to cell failure, and plays an important role in liver function damage. We conclude that IRF-1 activates autophagy through JNK-mediated autophagy. Accordingly, these findings indicating that the IRF-1/JNK pathway activates autophagy to exacerbate liver IRI in this mouse model may provide new insights into novel protective therapies for hepatic IRI.
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Affiliation(s)
- Shipeng Li
- Department of Hepatobiliary Surgery First Affiliated Hospital of Xinxiang Medical University Xinxiang China
| | - Jindan He
- Department of Anesthesiology Peking University Third Hospital Beijing China
| | - Hongwei Xu
- Department of Hepatobiliary Surgery First Affiliated Hospital of Xinxiang Medical University Xinxiang China
| | - Jiaxing Yang
- Department of Hepatobiliary Surgery First Affiliated Hospital of Xinxiang Medical University Xinxiang China
| | - Yutian Luo
- Department of Hepatobiliary Surgery First Affiliated Hospital of Xinxiang Medical University Xinxiang China
| | - Wenyue Song
- Department of Obstetrics and Gynecology Jiaozuo Women and Children Hospital Jiaozuo China
| | - Bingbing Qiao
- Department of Hepatobiliary Surgery First Affiliated Hospital of Zhengzhou University Zhengzhou China
| | - Haiming Zhang
- Department of Liver Transplantation Beijing Friendship Hospital, Capital Medical University Beijing China
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9
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Álvarez-Mercado AI, Rojano-Alfonso C, Micó-Carnero M, Caballeria-Casals A, Peralta C, Casillas-Ramírez A. New Insights Into the Role of Autophagy in Liver Surgery in the Setting of Metabolic Syndrome and Related Diseases. Front Cell Dev Biol 2021; 9:670273. [PMID: 34141709 PMCID: PMC8204012 DOI: 10.3389/fcell.2021.670273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/23/2021] [Indexed: 01/18/2023] Open
Abstract
Visceral obesity is an important component of metabolic syndrome, a cluster of diseases that also includes diabetes and insulin resistance. A combination of these metabolic disorders damages liver function, which manifests as non-alcoholic fatty liver disease (NAFLD). NAFLD is a common cause of abnormal liver function, and numerous studies have established the enormously deleterious role of hepatic steatosis in ischemia-reperfusion (I/R) injury that inevitably occurs in both liver resection and transplantation. Thus, steatotic livers exhibit a higher frequency of post-surgical complications after hepatectomy, and using liver grafts from donors with NAFLD is associated with an increased risk of post-surgical morbidity and mortality in the recipient. Diabetes, another MetS-related metabolic disorder, also worsens hepatic I/R injury, and similar to NAFLD, diabetes is associated with a poor prognosis after liver surgery. Due to the large increase in the prevalence of MetS, NAFLD, and diabetes, their association is frequent in the population and therefore, in patients requiring liver resection and in potential liver graft donors. This scenario requires advancement in therapies to improve postoperative results in patients suffering from metabolic diseases and undergoing liver surgery; and in this sense, the bases for designing therapeutic strategies are in-depth knowledge about the molecular signaling pathways underlying the effects of MetS-related diseases and I/R injury on liver tissue. A common denominator in all these diseases is autophagy. In fact, in the context of obesity, autophagy is profoundly diminished in hepatocytes and alters mitochondrial functions in the liver. In insulin resistance conditions, there is a suppression of autophagy in the liver, which is associated with the accumulation of lipids, being this is a risk factor for NAFLD. Also, oxidative stress occurring in hepatic I/R injury promotes autophagy. The present review aims to shed some light on the role of autophagy in livers undergoing surgery and also suffering from metabolic diseases, which may lead to the discovery of effective therapeutic targets that could be translated from laboratory to clinical practice, to improve postoperative results of liver surgeries when performed in the presence of one or more metabolic diseases.
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Affiliation(s)
- Ana Isabel Álvarez-Mercado
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, Granada, Spain.,Institute of Nutrition and Food Technology "José Mataix", Biomedical Research Center, Parque Tecnológico Ciencias de la Salud, Granada, Spain.,Instituto de Investigación Biosanitaria ibs. GRANADA, Complejo Hospitalario Universitario de Granada, Granada, Spain
| | - Carlos Rojano-Alfonso
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Marc Micó-Carnero
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | | | - Carmen Peralta
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Araní Casillas-Ramírez
- Hospital Regional de Alta Especialidad de Ciudad Victoria "Bicentenario 2010", Ciudad Victoria, Mexico.,Facultad de Medicina e Ingeniería en Sistemas Computacionales de Matamoros, Universidad Autónoma de Tamaulipas, Matamoros, Mexico
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10
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Wu J, Bai Y, Wang Y, Ma J. Melatonin and regulation of autophagy: Mechanisms and therapeutic implications. Pharmacol Res 2020; 163:105279. [PMID: 33161138 DOI: 10.1016/j.phrs.2020.105279] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 10/23/2020] [Accepted: 10/25/2020] [Indexed: 02/07/2023]
Abstract
Mitochondria are essential subcellular units that generate basic energy for the cell, as well as influence Ca2+ flux, apoptosis, and cell signaling. Mitophagy can selectively remove impaired mitochondria to preserve mitochondrial function, which is crucial for normal cellular maintenance. Mitochondrial dysfunction and mitophagy are widely reported to be linked to various pathogeneses. In addition, there is increasing evidence regarding the beneficial role of melatonin in the regulation and intervention of mitophagy progression. In this review, we focus on specific pathological conditions, including ischemia/reperfusion injury (IRI), cancer and neurodegenerative diseases, and elucidate the essential role of melatonin in the modulation of mitophagy in each of these distinct disorders.
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Affiliation(s)
- Jinjing Wu
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University-Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Yang Bai
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University-Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Yaguang Wang
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University-Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Jun Ma
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University-Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing 100029, China.
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11
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Zuo W, Tian R, Chen Q, Wang L, Gu Q, Zhao H, Huang C, Liu Y, Li J, Yang X, Xu L, Zhang B, Liu Z. miR-330-5p inhibits NLRP3 inflammasome-mediated myocardial ischaemia-reperfusion injury by targeting TIM3. Cardiovasc Drugs Ther 2020; 35:691-705. [PMID: 33137205 DOI: 10.1007/s10557-020-07104-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/19/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND/AIMS The Nod-like receptor protein-3 (NLRP3) inflammasome signalling pathway is involved in the inflammatory reaction of myocardial ischaemia-reperfusion (I/R) injury. Our previous study showed that miR-330-5p was differentially expressed in both cerebral and myocardial I/R injury, and thus might be a biomarker for I/R injury-related diseases. Another study also indicated that miR-330-5p could promote NLRP3 inflammasome activation in renal IRI. However, the role of miR-330-5p in myocardial I/R injury-induced inflammatory responses is unknown. This study aimed to investigate the role of miR-330-5p in NLRP3 inflammasome-mediated myocardial I/R injury. METHODS Myocardial I/R injury was induced in mice by occlusion of the left anterior descending coronary artery for 45 min followed by reperfusion. For NLRP3 inflammasome stimulation in vitro, cardiomyocytes were treated with 2 h of oxygen and glucose deprivation (OGD) or LPS (100 ng/ml). Myocardial miR-330-5p expression was examined by PCR at different treatment times. A miR-330-5p antagomir and an agomir were used to regulate miR-330-5p expression. To evaluate the role of miR-330-5p in myocardial I/R injury, 2,3,5-triphenyltetrazolium chloride (TTC) staining, echocardiography, and immunoblotting were used to assess infarct volume, cardiac function, and NLRP3 inflammasome activation respectively. A luciferase binding assay was used to examine whether miR-330-5p could directly bind to the T cell immunoglobulin domain and mucin domain-containing molecule-3 (TIM3). Finally, the role of the miR-330-5p/TIM3 axis in regulating apoptosis and NLRP3 inflammasome formation was evaluated with flow cytometry assays and immunofluorescence staining. RESULTS Compared to that in the model group, the inhibition of miR-330-5p significantly aggravated myocardial I/R injury, resulting in increased infarct volume and more severe cardiac dysfunction. Moreover, inhibition of miR-330-5p significantly increased the levels of NLRP3 inflammasome-related proteins, including caspase-1, IL-1β, IL-18 and TNF-α, in both in-vivo and in-vitro models. Furthermore, TIM3 was confirmed as a potential target of miR-330-5p. As predicted, suppression of TIM3 by siRNA ameliorated the anti-miR-330-5p-mediated activation of the NLRP3 inflammasome induced by OGD and LPS, thus decreasing cardiomyocyte apoptosis. CONCLUSIONS Our study indicated that the miR-330-5p/TIM3 axis was involved in the regulatory mechanism of NLRP3 inflammasome-mediated myocardial inflammation.
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Affiliation(s)
- Wei Zuo
- Department of Pharmacy, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China
| | - Ran Tian
- Department of Cardiology, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China
| | - Qian Chen
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Beijing, China
| | - Lun Wang
- Department of Cardiology, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China
| | - Qing Gu
- Department of Cardiology, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China
| | - Hongmei Zhao
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing, China
| | - Chunmei Huang
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Beijing, China
| | - Yingxian Liu
- Department of Cardiology, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China
| | - Jingyi Li
- Department of Cardiology, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China
| | - Xinglin Yang
- Department of Cardiology, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China
| | - Lihong Xu
- Clinical Pharmacology Research Center, Peking Union Medical College Hospital, Beijing, China
| | - Bo Zhang
- Department of Pharmacy, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China.
| | - Zhenyu Liu
- Department of Cardiology, Peking Union Medical College Hospital, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing, 100730, China.
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12
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Zuo W, Yan F, Liu Z, Zhang B. miR-330 regulates Drp-1 mediated mitophagy by targeting PGAM5 in a rat model of permanent focal cerebral ischemia. Eur J Pharmacol 2020; 880:173143. [PMID: 32360974 DOI: 10.1016/j.ejphar.2020.173143] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 02/06/2023]
Abstract
Growing evidence have suggested that mitophagy could exert a neuroprotective role in brain ischemia by removing the damaged mitochondria. However the upstream mechanisms of mitophagy are remain unclear. We previously observed a decrease of miR-330 in a miRNA profile of plasma from patients within 3 h after a stroke. Our study further focused on the role and mechanism of miR-330 in mitophagy induced by hypoxia-ischemia (H/I) in rats. Cerebral ischemia model in rats was made with permanent middle cerebral artery occlusion (pMCAO). In vitro, ischemic model in primary neurons was established with oxygen-glucose deprivation. Various methods, including TTC staining, immunofluorescence staining, Western blot, ELISA, flow cytometry, and transmission electron microscopy were used to clarify the role of miR-330 after H/I, and whether miR-330/phosphoglycerate mutase family member 5 (PGAM5) axis could regulate dynamin-related protein 1 (Drp-1) mediated mitophagy. MiR-330 levels decreased both in rat plasma and in ipsilateral brain tissues after H/I. Pretreating animals with miR-330 antagomir could decrease cerebral infarction, edema, mortality, and apoptosis after 6-h pMCAO. PGAM5 was validated as a target of miR-330. MiR-330 agomir and antagomir transfection respectively decreased and increased the PGAM5 protein expression. MiR-330 could down-regulate mitophagy by inhibiting PGAM5-induced Drp1 dephosphorylation, thus reducing the recruitment of Drp1 to mitochondrial outer membrane and Drp1-mediated mitophagy after H/I. Our results suggest a role of miR-330 in regulating mitophagy. Our study suggested a novel miR-based intervention strategy for stroke.
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Affiliation(s)
- Wei Zuo
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education", Yantai University, Yantai, China
| | - Feng Yan
- Cerebrovascular Diseases Research Institute, Xuanwu Hospital of Capital Medical University, Beijing, China; Department of Neurobiology, Capital Medical University, Beijing, China
| | - Zhenyu Liu
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Bo Zhang
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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13
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Li H, Pan Y, Wu H, Yu S, Wang J, Zheng J, Wang C, Li J, Jiang J. Inhibition of excessive mitophagy by N-acetyl-L-tryptophan confers hepatoprotection against Ischemia-Reperfusion injury in rats. PeerJ 2020; 8:e8665. [PMID: 32296597 PMCID: PMC7151751 DOI: 10.7717/peerj.8665] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 01/29/2020] [Indexed: 12/13/2022] Open
Abstract
In order to investigate the mechnism of hepatoprotective of N-acetyl-L-tryptophan (L-NAT) against ischemia-reperfusion (I/R) injury, the effects of L-NAT were investigated in hepatic ischemia-reperfusion injury (HIRI) models both in vitro and in vivo, which were made by BRL cells and Sprague-Dawley (SD) rats, respectively. The cell viability of hepatocyte was assessed by cell counting kit-8 (CCK-8) staining. The activation of autophagy was detected by electron microscopy (EM), quantitative real-time PCR (qRT-PCR), Western blotting and immunofluorescence. The activation of mitophagy was determined by the change of autophagy related protein, change of mitochondrial structure and function, co-location of autophagy protein and MitoTracker. Results showed that the morphological structures of hepatocytes were changed significantly after HIRI, and the cell viability of hydrogen peroxide (H2O2)-induced BRL cells was decreased. Autophagy markers Beclin1, microtubule associated protein 1 light chain 3-II (LC3-II) and autophagy related protein-7 (ATG-7) were highly expressed and the expression of SQSTM1 (P62) was decreased after HIRI, which suggested that autophagy of hepatocytes was activated after I/R. The reduction of ATP, mitochondrial DNA (mtDNA) and the mitochondrial transmembrane potential (ΔΨm) after H2O2-induced revealed that function of mitochondrial had also undergone significant changes. The increased expression of autophagy protein, destructure of mitochondria and mitochondrial dysfunction, the increased co-location of Beclin1 and MitoTracker induced by H2O2 implied the excessive mitophagy. The expression of the autophagy protein was increased by 3-Methyladenine (3-MA), providing another piece of evidence. Importantly, all changes were restored by L-NAT pretreament. In conclusion, the present findings demonstrate that excessive mitophagy involved in the process of HIRI and L-NAT may protect hepatocytes against HIRI by inhibiting activation of mitophagy and improving the structure and function of mitochondria.
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Affiliation(s)
- Huiting Li
- Department of Anatomy, Weifang Medical University, Weifang, China
| | - Yitong Pan
- Department of Anatomy, Weifang Medical University, Weifang, China
| | - Hongjuan Wu
- Morphology Lab, Weifang Medical University, Weifang, China
| | - Shuna Yu
- Department of Anatomy, Weifang Medical University, Weifang, China
| | - Jianxin Wang
- Department of Anatomy, Weifang Medical University, Weifang, China
| | - Jie Zheng
- Department of Pathology, Weifang Medical University, Weifang, China
| | - Can Wang
- Department of Anatomy, Weifang Medical University, Weifang, China
| | - Jianguo Li
- Department of Anatomy, Weifang Medical University, Weifang, China
| | - Jiying Jiang
- Department of Anatomy, Weifang Medical University, Weifang, China
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Wang J, Toan S, Zhou H. New insights into the role of mitochondria in cardiac microvascular ischemia/reperfusion injury. Angiogenesis 2020; 23:299-314. [PMID: 32246225 DOI: 10.1007/s10456-020-09720-2] [Citation(s) in RCA: 188] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 03/30/2020] [Indexed: 12/19/2022]
Abstract
As reperfusion therapies have become more widely used in acute myocardial infarction patients, ischemia-induced myocardial damage has been markedly reduced, but reperfusion-induced cardiac injury has become increasingly evident. The features of cardiac ischemia-reperfusion (I/R) injury include microvascular perfusion defects, platelet activation and sequential cardiomyocyte death due to additional ischemic events at the reperfusion stage. Microvascular obstruction, defined as a no-reflow phenomenon, determines the infarct zone, myocardial function and peri-operative mortality. Cardiac microvascular endothelial cell injury may occur much earlier and with much greater severity than cardiomyocyte injury. Endothelial cells contain fewer mitochondria than other cardiac cells, and several of the pathological alterations during cardiac microvascular I/R injury involve mitochondria, such as increased mitochondrial reactive oxygen species (mROS) levels and disturbed mitochondrial dynamics. Although mROS are necessary physiological second messengers, high mROS levels induce oxidative stress, endothelial senescence and apoptosis. Mitochondrial dynamics, including fission, fusion and mitophagy, determine the shape, distribution, size and function of mitochondria. These adaptive responses modify extracellular signals and orchestrate intracellular processes such as cell proliferation, migration, metabolism, angiogenesis, permeability transition, adhesive molecule expression, endothelial barrier function and anticoagulation. In this review, we discuss the involvement of mROS and mitochondrial morphofunction in cardiac microvascular I/R injury.
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Affiliation(s)
- Jin Wang
- Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, 100853, China
| | - Sam Toan
- Department of Chemical Engineering, University of Minnesota-Duluth, Duluth, MN, 55812, USA
| | - Hao Zhou
- Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, 100853, China. .,Department of Cardiology, The First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China.
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15
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Ke PY. Mitophagy in the Pathogenesis of Liver Diseases. Cells 2020; 9:cells9040831. [PMID: 32235615 PMCID: PMC7226805 DOI: 10.3390/cells9040831] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/25/2020] [Accepted: 03/27/2020] [Indexed: 02/07/2023] Open
Abstract
Autophagy is a catabolic process involving vacuolar sequestration of intracellular components and their targeting to lysosomes for degradation, thus supporting nutrient recycling and energy regeneration. Accumulating evidence indicates that in addition to being a bulk, nonselective degradation mechanism, autophagy may selectively eliminate damaged mitochondria to promote mitochondrial turnover, a process termed “mitophagy”. Mitophagy sequesters dysfunctional mitochondria via ubiquitination and cargo receptor recognition and has emerged as an important event in the regulation of liver physiology. Recent studies have shown that mitophagy may participate in the pathogenesis of various liver diseases, such as liver injury, liver steatosis/fatty liver disease, hepatocellular carcinoma, viral hepatitis, and hepatic fibrosis. This review summarizes the current knowledge on the molecular regulations and functions of mitophagy in liver physiology and the roles of mitophagy in the development of liver-related diseases. Furthermore, the therapeutic implications of targeting hepatic mitophagy to design a new strategy to cure liver diseases are discussed.
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Affiliation(s)
- Po-Yuan Ke
- Department of Biochemistry & Molecular Biology and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; ; Tel.: +886-3-211-8800 (ext. 5115); Fax: +886-3-211-8700
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
- Division of Allergy, Immunology, and Rheumatology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
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Characteristics of Changes in Inflammatory Cytokines as a Function of Hepatic Ischemia-Reperfusion Injury Stage in Mice. Inflammation 2020; 42:2139-2147. [PMID: 31494794 DOI: 10.1007/s10753-019-01078-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Liver ischemia-reperfusion injury (IRI) can severely compromise the prognosis of patients receiving liver surgery. While inflammation contributes to the damage resulting from IRI, only a limited number of inflammation biomarkers have been identified as being associated with the different stages of hepatic IRI. As an approach to identify some of these inflammatory cytokines and the molecular mechanisms involved within different stages of hepatic IRI, we used an advanced antibody array assay to detect multiple proteins. With this technology, we observed specific differences in the content of inflammatory cytokines between ischemic and sham controls, as well as a function of the different reperfusion stages in a hepatic IRI mouse model. For example, while liver tissue content of IL-12p40/p70 was significantly increased in the ischemic stage, it was significantly decreased in the reperfusion stage as compared with that of the sham group. For other inflammatory cytokines, no changes were obtained between the ischemic and reperfusion stages with levels of IL-17, Eotaxin-2, Eotaxin, and sTNF RII all being consistently increased, while those of TIMP-1, TIMP-2, BLC, and MCSF consistently decreased as compared with that of the sham group at all reperfusion stages examined. Results from protein function annotation Gene Ontology and the KEGG pathway revealed that inflammatory cytokines are enriched in a network associated with activation of inflammatory response signaling pathways such as TLR, TNF, and IL-17 when comparing responses of the IR versus sham groups. The identification of cytokines along with their roles at specific stages of IRI may reveal important new biological markers for the diagnosis and prognosis of hepatic IRI.
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Yang YY, Gong DJ, Zhang JJ, Liu XH, Wang L. Diabetes aggravates renal ischemia-reperfusion injury by repressing mitochondrial function and PINK1/Parkin-mediated mitophagy. Am J Physiol Renal Physiol 2019; 317:F852-F864. [PMID: 31390235 DOI: 10.1152/ajprenal.00181.2019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Diabetes could aggravate ischemia-reperfusion (I/R) injury, but the underlying mechanism is unclear. In the present study, we aimed to investigate whether diabetes exacerbates renal I/R injury and its possible mechanism. In vitro, HK-2 cells under normal or high glucose conditions were subjected to hypoxia (12 h) followed by reoxygenation (3 h) (H/R). Cell viability, intracellular ATP content, mitochondrial membrane potential, reactive oxygen species production, and apoptosis were measured. In vivo, streptozotocin-induced diabetic and nondiabetic rats were subjected to I/R. Renal pathology, function, and apoptosis were evaluated by hematoxylin and eosin staining, transmission electron microscopy, and Western blot analysis. Compared with the normal glucose + H/R group, mitochondrial function (ATP, mitochondrial membrane potential, and reactive oxygen species) and mitophagy were reduced in the high glucose + H/R group, as was expression of phosphatase and tensin homolog-induced putative kinase 1 (PINK1) and Parkin. Also, cells in the high glucose + H/R group exhibited more apoptosis compared with the normal glucose + H/R group, as assessed by flow cytometry, TUNEL staining, and Western blot analysis. Compared with normal rats that underwent I/R, diabetic rats that underwent I/R exhibited more severe tubular damage and renal dysfunction as well as expression of the apoptotic protein caspase-3. Meanwhile, diabetes alleviated mitophagy-associated protein expression in rats subjected to I/R, including expression of PINK1 and Parkin. Transmission electron microscopy indicated that the mitophagosome could be hardly observed and that mitochondrial morphology and structure were obviously damaged in the diabetes + I/R group. In conclusion, our results, for the first time, indicate that diabetes could aggravate I/R injury by repressing mitochondrial function and PINK1/Parkin-mediated mitophagy in vivo and in vitro.
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Affiliation(s)
- Yuan-Yuan Yang
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Dao-Jing Gong
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jian-Jian Zhang
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xiu-Heng Liu
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Lei Wang
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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