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Li J, Hong Y, Zhong Y, Yang S, Pei L, Huang Z, Long H, Chen X, Zhou C, Zheng G, Zeng C, Wu H, Wang T. Meteorin-like (METRNL) attenuates hypertensive induced cardiac hypertrophy by inhibiting autophagy via activating BRCA2. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167113. [PMID: 38460862 DOI: 10.1016/j.bbadis.2024.167113] [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: 12/17/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 03/11/2024]
Abstract
Hypertension, a prevalent cardiovascular ailment globally, can precipitate numerous complications, notably hypertensive cardiomyopathy. Meteorin-like (METRNL) is demonstrated to possess potential protective properties on cardiovascular diseases. However, its specific role and underlying mechanism in hypertensive myocardial hypertrophy remain elusive. Spontaneously hypertensive rats (SHRs) served as hypertensive models to explore the effects of METRNL on hypertension and its induced myocardial hypertrophy. The research results indicate that, in contrast to Wistar-Kyoto (WKY) rats, SHRs exhibit significant symptoms of hypertension and myocardial hypertrophy, but cardiac-specific overexpression (OE) of METRNL can partially ameliorate these symptoms. In H9c2 cardiomyocytes, METRNL suppresses Ang II-induced autophagy by controlling the BRCA2/Akt/mTOR signaling pathway. But when BRCA2 expression is knocked down, this effect will be suppressed. Collectively, METRNL emerges as a potential therapeutic target for hypertensive cardiomyopathy.
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Affiliation(s)
- Jun Li
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Yinghui Hong
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Yinsheng Zhong
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Shujun Yang
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Liying Pei
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Zijie Huang
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Huibao Long
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Xuxiang Chen
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Changqing Zhou
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Guanghui Zheng
- Department of Emergency, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510120, PR China
| | - Chaotao Zeng
- Department of Emergency, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510120, PR China
| | - Haidong Wu
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China
| | - Tong Wang
- Department of Emergency, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518003, PR China.
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Yan Z, Xing Z, Xue T, Zhao J, Li G, Xu L, Sun Q. Insulin-like growth factor-1 in myocardial ischemia-reperfusion injury: A review. Medicine (Baltimore) 2024; 103:e37279. [PMID: 38428899 PMCID: PMC10906579 DOI: 10.1097/md.0000000000037279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 01/25/2024] [Indexed: 03/03/2024] Open
Abstract
Myocardial ischemia-reperfusion injury (MIRI) is a severe damage inflicted on the ischemic myocardium when blood flow is restored, and it commonly occurs in a wide range of cardiovascular diseases. Presently, no effective clinical treatment exists for MIRI. Accumulating evidence indicates that insulin-like growth factor-1 (IGF-1) plays a role in the intricate chain of cardiovascular events, in addition to its well-recognized growth-promoting and metabolic effects. IGF-1, a member of the insulin family, exhibits a broad spectrum of protective effects against ischemia/reperfusion injury in various tissues, especially the myocardium. In particular, earlier research has demonstrated that IGF-1 reduces cellular oxidative stress, improves mitochondrial function, interacts with noncoding RNAs, and activates cardiac downstream protective genes and protective signaling channels. This review aimed to summarize the role of IGF-1 in MIRI and elucidate its related mechanisms of action. In addition, IGF-1-related interventions for MIRI, such as ischemic preconditioning and post-conditioning, were discussed. The purpose of this review was to provide evidence supporting the activation of IGF-1 in MIRI and advocate its use as a therapeutic target.
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Affiliation(s)
- Zhenrong Yan
- Department of Clinical Laboratory, Affiliated Hospital of Chengde Medical University, Hebei, China
| | - Ziyang Xing
- Department of Clinical Laboratory, Affiliated Hospital of Chengde Medical University, Hebei, China
| | - Tingyun Xue
- Department of Clinical Laboratory, Affiliated Hospital of Chengde Medical University, Hebei, China
| | - Jiaye Zhao
- Department of Clinical Laboratory, Affiliated Hospital of Chengde Medical University, Hebei, China
| | - Guangmei Li
- Department of Clinical Laboratory, Affiliated Hospital of Chengde Medical University, Hebei, China
| | - Liwenjing Xu
- Department of Clinical Laboratory, Affiliated Hospital of Chengde Medical University, Hebei, China
| | - Qiyu Sun
- Department of Clinical Laboratory, Affiliated Hospital of Chengde Medical University, Hebei, China
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Eto R, Kawano H, Matsuyama-Matsuu M, Matsuda K, Ueki N, Nakashima M, Okano S, Ishijima M, Kawakatsu M, Watanabe J, Yoshimuta T, Ikeda S, Maemura K. Ubiquitin, p62, and Microtubule-Associated Protein 1 Light Chain 3 in Cardiomyopathy. Circ Rep 2023; 5:323-330. [PMID: 37564875 PMCID: PMC10411995 DOI: 10.1253/circrep.cr-23-0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 06/14/2023] [Indexed: 08/12/2023] Open
Abstract
Background: The accumulation of ubiquitinated proteins has been detected in diseased hearts and has been associated with the expression of p62 and microtubule-associated protein 1 light chain 3 (LC3), which are related to autophagy. We evaluated differences in ubiquitin accumulation and p62 and LC3 expression in cardiomyopathy using endomyocardial biopsies. Methods and Results: We studied 24 patients (aged 24-70 years; mean age 55 years) diagnosed with dilated cardiomyopathy (DCM), hypertrophic cardiomyopathy (HCM), or non-cardiomyopathy (NCM) who underwent endomyocardial biopsy. Biopsied samples were evaluated by microscopy for ubiquitin accumulation and expression of p62 and LC3. Ubiquitin accumulation and p62 and LC3 expression were observed in all patients. Ubiquitin accumulation was higher in DCM than in HCM or NCM; p62 expression was higher in DCM than in HCM. There were no significant differences in LC3 expression among the groups. Ubiquitin accumulation was significantly related to serum N-terminal pro B-type natriuretic peptide concentration and the expression of p62, but not LC3. Conclusions: Ubiquitin accumulation was more prominent in DCM than in HCM and NCM, which may be due to a relative shortage of clearance, including autophagy, compared with production.
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Affiliation(s)
- Ryo Eto
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Hiroaki Kawano
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Mutsumi Matsuyama-Matsuu
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Katsuya Matsuda
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Nozomi Ueki
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Masahiro Nakashima
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Shinji Okano
- Department of Pathology, Nagasaki University Hospital Nagasaki Japan
| | - Mitsuaki Ishijima
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Miho Kawakatsu
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Jumpei Watanabe
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Tsuyoshi Yoshimuta
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Satoshi Ikeda
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Koji Maemura
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
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Shang L, Zhao W, Wang YZ, Li Z, Choi JJ, Kho M, Mosley TH, Kardia SLR, Smith JA, Zhou X. meQTL mapping in the GENOA study reveals genetic determinants of DNA methylation in African Americans. Nat Commun 2023; 14:2711. [PMID: 37169753 PMCID: PMC10175543 DOI: 10.1038/s41467-023-37961-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 04/07/2023] [Indexed: 05/13/2023] Open
Abstract
Identifying genetic variants that are associated with variation in DNA methylation, an analysis commonly referred to as methylation quantitative trait locus (meQTL) mapping, is an important first step towards understanding the genetic architecture underlying epigenetic variation. Most existing meQTL mapping studies have focused on individuals of European ancestry and are underrepresented in other populations, with a particular absence of large studies in populations with African ancestry. We fill this critical knowledge gap by performing a large-scale cis-meQTL mapping study in 961 African Americans from the Genetic Epidemiology Network of Arteriopathy (GENOA) study. We identify a total of 4,565,687 cis-acting meQTLs in 320,965 meCpGs. We find that 45% of meCpGs harbor multiple independent meQTLs, suggesting potential polygenic genetic architecture underlying methylation variation. A large percentage of the cis-meQTLs also colocalize with cis-expression QTLs (eQTLs) in the same population. Importantly, the identified cis-meQTLs explain a substantial proportion (median = 24.6%) of methylation variation. In addition, the cis-meQTL associated CpG sites mediate a substantial proportion (median = 24.9%) of SNP effects underlying gene expression. Overall, our results represent an important step toward revealing the co-regulation of methylation and gene expression, facilitating the functional interpretation of epigenetic and gene regulation underlying common diseases in African Americans.
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Affiliation(s)
- Lulu Shang
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Wei Zhao
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yi Zhe Wang
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Zheng Li
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jerome J Choi
- Population Health Sciences, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, 53726, USA
| | - Minjung Kho
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Thomas H Mosley
- Memory Impairment and Neurodegenerative Dementia (MIND) Center, University of Mississippi Medical Center, Jackson, MS, 39126, USA
| | - Sharon L R Kardia
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jennifer A Smith
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - Xiang Zhou
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA.
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5
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Bi Y, Yang GH, Guo ZZ, Cai W, Chen SB, Zhou X, Li YM. Chronic high‑salt intake induces cardiomyocyte autophagic vacuolization during left ventricular maladaptive remodeling in spontaneously hypertensive rats. Exp Ther Med 2023; 25:148. [PMID: 36911373 PMCID: PMC9995711 DOI: 10.3892/etm.2023.11847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/27/2023] [Indexed: 02/18/2023] Open
Abstract
The role of autophagy in high-salt (HS) intake associated hypertensive left ventricular (LV) remodeling remains unclear. The present study investigated the LV autophagic change and its association with the hypertensive LV remodeling induced by chronic HS intake in spontaneously hypertensive rats (SHR). Wistar Kyoto (WKY) rats and SHR were fed low-salt (LS; 0.5% NaCl) and HS (8.0% NaCl) diets and were subjected to invasive LV hemodynamic analysis after 8, 12 and 16 weeks of dietary intervention. Reverse transcription-quantitative PCR and western blot analysis were performed to investigate the expression of autophagy-associated key components. The LV morphologic staining was performed at the end of the study. The rat H9c2 ventricular myoblast cell-associated experiments were performed to explore the mechanism of HS induced autophagic change. A global autophagy-associated key component, as well as increased cardiomyocyte autophagic vacuolization, was observed after 12 weeks of HS intake. During this period, the heart from HS-diet-fed SHR exhibited a transition from compensated LV hypertrophy to decompensation, as shown by progressive impairment of LV function and interstitial fibrosis. Myocardial extracellular [Na+] and the expression of tonicity-responsive enhancer binding protein (TonEBP) was significantly increased in HS-fed rats, indicating myocardial interstitial hypertonicity by chronic HS intake. The global autophagic change and overt deterioration of LV function were not observed in LS-fed SHR and HS-fed WKY rats. The study of rat H9c2 cardiomyocytes demonstrated a cytosolic [Na+] elevation-mediated, reactive oxygen species-dependent the autophagic change occurred when exposed to an increased extracellular [Na+]. The present findings demonstrated that a myocardial autophagic change participates in the maladaptive LV remodeling induced by chronic HS intake in SHR, which provides a possible target for future intervention studies on HS-induced hypertensive LV remodeling.
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Affiliation(s)
- Ying Bi
- Department of Internal Medicine, Tianjin Corps Hospital of The Chinese People's Armed Police Forces, Tianjin 300163, P.R. China.,Institute of Prevention and Treatment of Cardiovascular Diseases in Alpine Environment of Plateau, Characteristic Medical Center of The Chinese People's Armed Police Forces, Tianjin 300162, P.R. China
| | - Guo-Hong Yang
- Institute of Prevention and Treatment of Cardiovascular Diseases in Alpine Environment of Plateau, Characteristic Medical Center of The Chinese People's Armed Police Forces, Tianjin 300162, P.R. China
| | - Zhao-Zeng Guo
- Institute of Prevention and Treatment of Cardiovascular Diseases in Alpine Environment of Plateau, Characteristic Medical Center of The Chinese People's Armed Police Forces, Tianjin 300162, P.R. China
| | - Wei Cai
- Institute of Prevention and Treatment of Cardiovascular Diseases in Alpine Environment of Plateau, Characteristic Medical Center of The Chinese People's Armed Police Forces, Tianjin 300162, P.R. China
| | - Shao-Bo Chen
- Institute of Prevention and Treatment of Cardiovascular Diseases in Alpine Environment of Plateau, Characteristic Medical Center of The Chinese People's Armed Police Forces, Tianjin 300162, P.R. China
| | - Xin Zhou
- Institute of Prevention and Treatment of Cardiovascular Diseases in Alpine Environment of Plateau, Characteristic Medical Center of The Chinese People's Armed Police Forces, Tianjin 300162, P.R. China.,Department of Cardiovascular Diseases, General Hospital Tianjin Medical University, Tianjin 300052, P.R. China
| | - Yu-Ming Li
- Institute of Prevention and Treatment of Cardiovascular Diseases in Alpine Environment of Plateau, Characteristic Medical Center of The Chinese People's Armed Police Forces, Tianjin 300162, P.R. China.,Department of Cardiovascular Diseases, TEDA International Cardiovascular Hospital, Tianjin 300457, P.R. China
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6
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Waterpipe smoke inhalation potentiates cardiac oxidative stress, inflammation, mitochondrial dysfunction, apoptosis and autophagy in experimental hypertension. Biomed Pharmacother 2023; 158:114144. [PMID: 36916396 DOI: 10.1016/j.biopha.2022.114144] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 12/04/2022] [Accepted: 12/21/2022] [Indexed: 01/05/2023] Open
Abstract
Cigarette smoking worsens the health of hypertensive patients. However, less is known about the actions and underlying mechanisms of waterpipe smoke (WPS) in hypertension. Therefore, we evaluated the effects of WPS inhalation in mice made hypertensive (HT) by infusing angiotensin II for six weeks. On day 14 of the infusion of angiotensin II or vehicle (normotensive; NT), mice were exposed either to air or WPS for four consecutive weeks. Each session was 30 min/day and 5 days/week. In NT mice, WPS increased systolic blood pressure (SBP) compared with NT air-exposed group. SBP increase was elevated in HT+WPS group versus either HT+air or NT+WPS. Similarly, the plasma levels of brain natriuretic peptide, C-reactive protein, 8-isoprostane and superoxide dismutase were increased in HT+WPS compared with either HT+air or NT+WPS. In the heart tissue, several markers of oxidative stress and inflammation were increased in HT+WPS group vs the controls. Furthermore, mitochondrial dysfunction in HT+WPS group was more affected than in the HT+air or HT+WPS groups. WPS inhalation in HT mice significantly increased cardiac DNA damage, cleaved caspase 3, expression of the autophagy proteins beclin 1 and microtubule-associated protein light chain 3B, and phosphorylated nuclear factor κ B, compared with the controls. Compared with HT+air mice, heart histology of WPS-exposed HT mice showed increased cardiomyocyte damage, neutrophilic and lymphocytic infiltration and focal fibrosis. We conclude that, in HT mice, WPS inhalation worsened hypertension, cardiac oxidative stress, inflammation, mitochondrial dysfunction, DNA damage, apoptosis and autophagy. The latter effects were associated with a mechanism involving NF-κB activation.
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Wong SK, Ramli FF, Ali A, Ibrahim N‘I. Genetics of Cholesterol-Related Genes in Metabolic Syndrome: A Review of Current Evidence. Biomedicines 2022; 10:biomedicines10123239. [PMID: 36551995 PMCID: PMC9775320 DOI: 10.3390/biomedicines10123239] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022] Open
Abstract
Metabolic syndrome (MetS) refers to a cluster of metabolic dysregulations, which include insulin resistance, obesity, atherogenic dyslipidemia and hypertension. The complex pathogenesis of MetS encompasses the interplay between environmental and genetic factors. Environmental factors such as excessive nutrients and sedentary lifestyle are modifiable and could be improved by lifestyle modification. However, genetic susceptibility to MetS, a non-modifiable factor, has attracted the attention of researchers, which could act as the basis for future diagnosis, prognosis, and therapy for MetS. Several cholesterol-related genes associated with each characteristic of MetS have been identified, such as apolipoprotein, lipoprotein lipase (LPL), cholesteryl ester transfer protein (CETP) and adiponectin. This review aims to summarize the genetic information of cholesterol-related genes in MetS, which may potentially serve as biomarkers for early prevention and management of MetS.
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Affiliation(s)
- Sok Kuan Wong
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, Kuala Lumpur, Malaysia
| | - Fitri Fareez Ramli
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, Kuala Lumpur, Malaysia
- Clinical Psychopharmacology Research Unit, Department of Psychiatry, University of Oxford, Warneford Hospital, Oxford OX3 7JX, UK
| | - Adli Ali
- Department of Pediatrics, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, Kuala Lumpur, Malaysia
| | - Nurul ‘Izzah Ibrahim
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, Kuala Lumpur, Malaysia
- Correspondence: ; Tel.: +60-39145-9545
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8
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Zeng Y, Ren WQ, Wen AZ, Zhang W, Fan FY, Chen OY. Autophagy and pressure overload-induced cardiac hypertrophy. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 24:1101-1108. [PMID: 35043747 DOI: 10.1080/10286020.2021.2024810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 12/27/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
Autophagy plays an important role in the pathogenesis of cardiovascular diseases. Dysregulation of autophagy may have a huge effect on cardiac hypertrophy induced by overload pressure although reports on autophagy and cardiac hypertrophy have been contradictory. Some studies showed that autophagy activation attenuated cardiac hypertrophy. However, others suggested that inhibition of autophagy would be protective. Different research models or different pathways involved could be responsible for it. Cardiac hypertrophy may be alleviated through regulation of autophagy. This review aims to highlight the pathways and therapeutic targets identified in the prevention and treatment of cardiac hypertrophy by regulating autophagy.
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Affiliation(s)
- Yong Zeng
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Wei-Qiong Ren
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Ai-Zhen Wen
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Wen Zhang
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Fu-Yuan Fan
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Ou-Ying Chen
- School of Nursing, Hunan University of Chinese Medicine, Changsha 410208, China
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9
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Role of AMPK in Myocardial Ischemia-Reperfusion Injury-Induced Cell Death in the Presence and Absence of Diabetes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:7346699. [PMID: 36267813 PMCID: PMC9578802 DOI: 10.1155/2022/7346699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 09/29/2022] [Indexed: 11/26/2022]
Abstract
Recent studies indicate cell death is the hallmark of cardiac pathology in myocardial infarction and diabetes. The AMP-activated protein kinase (AMPK) signalling pathway is considered a putative salvaging phenomenon, plays a decisive role in almost all cellular, metabolic, and survival functions, and therefore entails precise regulation of its activity. AMPK regulates various programmed cell death depending on the stimuli and context, including autophagy, apoptosis, necroptosis, and ferroptosis. There is substantial evidence suggesting that AMPK is down-regulated in cardiac tissues of animals and humans with type 2 diabetes or metabolic syndrome compared to non-diabetic control and that stimulation of AMPK (physiological or pharmacological) can ameliorate diabetes-associated cardiovascular complications, such as myocardial ischemia-reperfusion injury. Furthermore, AMPK is an exciting therapeutic target for developing novel drug candidates to treat cell death in diabetes-associated myocardial ischemia-reperfusion injury. Therefore, in this review, we summarized how AMPK regulates autophagic, apoptotic, necroptotic, and ferroptosis pathways in the context of myocardial ischemia-reperfusion injury in the presence and absence of diabetes.
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Kwon Y, Haam CE, Byeon S, Choi SK, Lee YH. Effects of 3-methyladenine, an autophagy inhibitor, on the elevated blood pressure and arterial dysfunction of angiotensin II-induced hypertensive mice. Biomed Pharmacother 2022; 154:113588. [PMID: 35994821 DOI: 10.1016/j.biopha.2022.113588] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/17/2022] [Accepted: 08/17/2022] [Indexed: 11/19/2022] Open
Abstract
Autophagy is an intracellular degradation system that disassembles cytoplasmic components through autophagosomes fused with lysosomes. Recently, it has been reported that autophagy is associated with cardiovascular diseases, including pulmonary hypertension, atherosclerosis, and myocardial ischemia. However, the involvement of autophagy in hypertension is not well understood. In the present study, we hypothesized that excessive autophagy contributes to the dysfunction of mesenteric arteries in angiotensin II (Ang II)-induced hypertensive mice. Treatment of an autophagy inhibitor, 3-methyladenine (3-MA), reduced the elevated blood pressure and wall thickness, and improved endothelium-dependent relaxation in mesenteric arteries of Ang II-treated mice. The expression levels of autophagy markers, beclin1 and LC3 II, were significantly increased by Ang II infusion, which was reduced by treatment of 3-MA. Furthermore, treatment of 3-MA induced vasodilation in the mesenteric resistance arteries pre-contracted with U46619 or phenylephrine, which was dependent on endothelium. Interestingly, nitric oxide production and phosphorylated endothelial nitric oxide synthase (p-eNOS) at S1177 in the mesenteric arteries of Ang II-treated mice were increased by treatment with 3-MA. In HUVECs, p-eNOS was reduced by Ang II, which was increased by treatment of 3-MA. 3-MA had direct vasodilatory effect on the pre-contracted mesenteric arteries. In cultured vascular smooth muscle cells (VSMCs), Ang II induced increase in beclin1 and LC3 II and decrease in p62, which was reversed by treatment of 3-MA. These results suggest that autophagy inhibition exerts beneficial effects on the dysfunction of mesenteric arteries in hypertension.
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Affiliation(s)
- Youngin Kwon
- Department of Physiology, College of Medicine, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, the Republic of the Korea
| | - Chae Eun Haam
- Department of Physiology, College of Medicine, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, the Republic of the Korea
| | - Seonhee Byeon
- Department of Physiology, College of Medicine, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, the Republic of the Korea
| | - Soo-Kyoung Choi
- Department of Physiology, College of Medicine, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, the Republic of the Korea.
| | - Young-Ho Lee
- Department of Physiology, College of Medicine, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, the Republic of the Korea.
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11
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The Transcription Factor EB (TFEB) Sensitizes the Heart to Chronic Pressure Overload. Int J Mol Sci 2022; 23:ijms23115943. [PMID: 35682624 PMCID: PMC9180101 DOI: 10.3390/ijms23115943] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 12/04/2022] Open
Abstract
The transcription factor EB (TFEB) promotes protein degradation by the autophagy and lysosomal pathway (ALP) and overexpression of TFEB was suggested for the treatment of ALP-related diseases that often affect the heart. However, TFEB-mediated ALP induction may perturb cardiac stress response. We used adeno-associated viral vectors type 9 (AAV9) to overexpress TFEB (AAV9-Tfeb) or Luciferase-control (AAV9-Luc) in cardiomyocytes of 12-week-old male mice. Mice were subjected to transverse aortic constriction (TAC, 27G; AAV9-Luc: n = 9; AAV9-Tfeb: n = 14) or sham (AAV9-Luc: n = 9; AAV9-Tfeb: n = 9) surgery for 28 days. Heart morphology, echocardiography, gene expression, and protein levels were monitored. AAV9-Tfeb had no effect on cardiac structure and function in sham animals. TAC resulted in compensated left ventricular hypertrophy in AAV9-Luc mice. AAV9-Tfeb TAC mice showed a reduced LV ejection fraction and increased left ventricular diameters. Morphological, histological, and real-time PCR analyses showed increased heart weights, exaggerated fibrosis, and higher expression of stress markers and remodeling genes in AAV9-Tfeb TAC compared to AAV9-Luc TAC. RNA-sequencing, real-time PCR and Western Blot revealed a stronger ALP activation in the hearts of AAV9-Tfeb TAC mice. Cardiomyocyte-specific TFEB-overexpression promoted ALP gene expression during TAC, which was associated with heart failure. Treatment of ALP-related diseases by overexpression of TFEB warrants careful consideration.
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Jia J, Tao X, Tian Z, Liu J, Ye X, Zhan Y. Vitamin D receptor deficiency increases systolic blood pressure by upregulating the renin‑angiotensin system and autophagy. Exp Ther Med 2022; 23:314. [PMID: 35369533 PMCID: PMC8943549 DOI: 10.3892/etm.2022.11243] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 11/30/2021] [Indexed: 11/06/2022] Open
Abstract
The vitamin D receptor (VDR) may regulate blood pressure via multiple pathways. The present study investigated the underlying mechanism by which VDR deficiency increases blood pressure. A total of 16 8-week-old male littermate mice were randomly divided into the VDR knockout and wild-type groups (VDR-/- and VDR+/+, respectively). Blood pressure was measured using a four-channel PowerLab data acquisition and ADI software analysis system. After euthanasia, vascular smooth muscle cells (VSMCs) were isolated from the VDR-/- and VDR+/+ mice. Oxidative stress, renin-angiotensin system (RAS) activation and autophagy markers were measured in the isolated VSMCs using reverse transcription-quantitative PCR (RT-qPCR), western blotting and transmission electron microscopy (TEM) assays. Mean systolic pressure was significantly higher in the VDR-/- mice compared with the VDR+/+ mice. RT-qPCR and western blotting analyses indicated that RAS markers (angiotensin II and II type 1 receptor) were significantly upregulated, oxidative stress was increased (evidenced by reduced superoxide dismutase and peroxiredoxin-4) and autophagy was activated (upregulation of autophagy related protein 7, Beclin 1 and microtubule-associated proteins 1A/1B light chain 3A) in the VDR-/- VSMCs compared with the VDR+/+ VSMCs. TEM demonstrated that there were more autophagy bodies in the VDR-/- VSMCs compared with the VDR+/+ VSMCs. In conclusion, VDR deficiency was associated with high blood pressure. The mechanism underlying the increase in blood pressure caused by VDR deficiency may involve activation of the RAS, as well as increased oxidative stress and autophagy of VSMCs.
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Affiliation(s)
- Jian Jia
- Department of General Practice, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Xu Tao
- Department of Geriatric Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Zhouning Tian
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Jing Liu
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Xiaoman Ye
- Department of Geriatric Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yiyang Zhan
- Department of Geriatric Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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Nandi SS, Katsurada K, Mahata SK, Patel KP. Neurogenic Hypertension Mediated Mitochondrial Abnormality Leads to Cardiomyopathy: Contribution of UPR mt and Norepinephrine-miR- 18a-5p-HIF-1α Axis. Front Physiol 2021; 12:718982. [PMID: 34912235 PMCID: PMC8667690 DOI: 10.3389/fphys.2021.718982] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/15/2021] [Indexed: 01/20/2023] Open
Abstract
Aims: Hypertension increases the risk of heart disease. Hallmark features of hypertensive heart disease is sympathoexcitation and cardiac mitochondrial abnormality. However, the molecular mechanisms for specifically neurally mediated mitochondrial abnormality and subsequent cardiac dysfunction are unclear. We hypothesized that enhanced sympatho-excitation to the heart elicits cardiac miR-18a-5p/HIF-1α and mitochondrial unfolded protein response (UPRmt) signaling that lead to mitochondrial abnormalities and consequent pathological cardiac remodeling. Methods and Results: Using a model of neurogenic hypertension (NG-HTN), induced by intracerebroventricular (ICV) infusion of Ang II (NG-HTN; 20 ng/min, 14 days, 0.5 μl/h, or Saline; Control, 0.9%) through osmotic mini-pumps in Sprague-Dawley rats (250-300 g), we attempted to identify a link between sympathoexcitation (norepinephrine; NE), miRNA and HIF-1α signaling and UPRmt to produce mitochondrial abnormalities resulting in cardiomyopathy. Cardiac remodeling, mitochondrial abnormality, and miRNA/HIF-1α signaling were assessed using histology, immunocytochemistry, electron microscopy, Western blotting or RT-qPCR. NG-HTN demonstrated increased sympatho-excitation with concomitant reduction in UPRmt, miRNA-18a-5p and increased level of HIF-1α in the heart. Our in silico analysis indicated that miR-18a-5p targets HIF-1α. Direct effects of NE on miRNA/HIF-1α signaling and mitochondrial abnormality examined using H9c2 rat cardiomyocytes showed NE reduces miR-18a-5p but increases HIF-1α. Electron microscopy revealed cardiac mitochondrial abnormality in NG-HTN, linked with hypertrophic cardiomyopathy and fibrosis. Mitochondrial unfolded protein response was decreased in NG-HTN indicating mitochondrial proteinopathy and proteotoxic stress, associated with increased mito-ROS and decreased mitochondrial membrane potential (ΔΨm), and oxidative phosphorylation. Further, there was reduced cardiac mitochondrial biogenesis and fusion, but increased mitochondrial fission, coupled with mitochondrial impaired TIM-TOM transport and UPRmt. Direct effects of NE on H9c2 rat cardiomyocytes also showed cardiomyocyte hypertrophy, increased mitochondrial ROS generation, and UPRmt corroborating the in vivo data. Conclusion: In conclusion, enhanced sympatho-excitation suppress miR-18a-5p/HIF-1α signaling and increased mitochondrial stress proteotoxicity, decreased UPRmt leading to decreased mitochondrial dynamics/OXPHOS/ΔΨm and ROS generation. Taken together, these results suggest that ROS induced mitochondrial transition pore opening activates pro-hypertrophy/fibrosis/inflammatory factors that induce pathological cardiac hypertrophy and fibrosis commonly observed in NG-HTN.
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Affiliation(s)
- Shyam S. Nandi
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kenichi Katsurada
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Sushil K. Mahata
- Metabolic Physiology and Ultrastructural Biology Laboratory, Department of Medicine, University of California, San Diego, San Diego, CA, United States
- VA San Diego Healthcare System, San Diego, CA, United States
| | - Kaushik P. Patel
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, United States
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Shen GY, Shin JH, Song YS, Joo HW, Park IH, Seong JH, Shin NK, Lee AH, Cho YJ, Lee Y, Lim YH, Kim H, Kim KS. Role of Autophagy in Granulocyte-Colony Stimulating Factor Induced Anti-Apoptotic Effects in Diabetic Cardiomyopathy. Diabetes Metab J 2021; 45:594-605. [PMID: 33631916 PMCID: PMC8369213 DOI: 10.4093/dmj.2020.0049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 09/27/2020] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND We previously, reported that granulocyte-colony stimulating factor (G-CSF) reduces cardiomyocyte apoptosis in diabetic cardiomyopathy. However, the underlying mechanisms are not yet fully understood. Therefore, we investigated whether the mechanisms underlying of the anti-apoptotic effects of G-CSF were associated with autophagy using a rat model of diabetic cardiomyopathy. METHODS Diabetic cardiomyopathy was induced in rats through a high-fat diet combined with low-dose streptozotocin and the rats were then treated with G-CSF for 5 days. Rat H9c2 cardiac cells were cultured under high glucose conditions as an in vitro model of diabetic cardiomyopathy. The extent of apoptosis and protein levels related to autophagy (Beclin-1, microtubule-binding protein light chain 3 [LC3]-II/LC3-I ratio, and P62) were determined for both models. Autophagy determination was performed using an Autophagy Detection kit. RESULTS G-CSF significantly reduced cardiomyocyte apoptosis in the diabetic myocardium in vivo and led to an increase in Beclin-1 level and the LC3-II/LC3-I ratio, and decreased P62 level. Similarly, G-CSF suppressed apoptosis, increased Beclin-1 level and LC3-II/LC3-I ratio, and decreased P62 level in high glucose-induced H9c2 cardiac cells in vitro. These effects of G-CSF were abrogated by 3-methyladenine, an autophagy inhibitor. In addition, G-CSF significantly increased autophagic flux in vitro. CONCLUSION Our results suggest that the anti-apoptotic effect of G-CSF might be significantly associated with the up-regulation of autophagy in diabetic cardiomyopathy.
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Affiliation(s)
- Guang-Yin Shen
- Division of Cardiology, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
- Department of Cardiology, Jilin University Jilin Central Hospital, Jilin, China
| | - Jeong-Hun Shin
- Division of Cardiology, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Yi-Sun Song
- Graguate School of Biomedical Science and Engineering, Hanyang University, Seoul, Korea
| | - Hyun-Woo Joo
- Graguate School of Biomedical Science and Engineering, Hanyang University, Seoul, Korea
| | - In-Hwa Park
- Graguate School of Biomedical Science and Engineering, Hanyang University, Seoul, Korea
| | - Jin-Hee Seong
- Graguate School of Biomedical Science and Engineering, Hanyang University, Seoul, Korea
| | - Na-Kyoung Shin
- Graguate School of Biomedical Science and Engineering, Hanyang University, Seoul, Korea
| | - A-Hyeon Lee
- Graguate School of Biomedical Science and Engineering, Hanyang University, Seoul, Korea
| | - Young Jong Cho
- Laboratory Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Yonggu Lee
- Division of Cardiology, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Young-Hyo Lim
- Division of Cardiology, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Hyuck Kim
- Department of Thoracic Surgery, Hanyang University College of Medicine, Seoul, Korea
| | - Kyung-Soo Kim
- Division of Cardiology, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
- Graguate School of Biomedical Science and Engineering, Hanyang University, Seoul, Korea
- Corresponding author: Kyung-Soo Kim https://orcid.org/0000-0002-0891-1023 Division of Cardiology, Department of Internal Medicine, Hanyang University College of Medicine, 222-1 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea E-mail:
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Mibefradil Alleviates High-Glucose-induced Cardiac Hypertrophy by Inhibiting PI3K/Akt/mTOR-mediated Autophagy. J Cardiovasc Pharmacol 2021; 76:246-254. [PMID: 32433360 DOI: 10.1097/fjc.0000000000000844] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Cardiac hypertrophy causes heart failure and is associated with hyperglycemia in patients with diabetes mellitus. Mibefradil, which acts as a T-type calcium channel blocker, exerts beneficial effects in patients with heart failure. In this study, we explored the effects and mechanism of mibefradil on high-glucose-induced cardiac hypertrophy in H9c2 cells. H9c2 cells were incubated in a high-glucose medium and then treated with different concentrations of mibefradil in the presence or absence of the Akt inhibitor MK2206 or mTOR inhibitor rapamycin. Cell size was evaluated through immunofluorescence, and mRNA expression of cardiac hypertrophy markers (atrial natriuretic peptide, brain natriuretic peptide, and β-myosin heavy chain) was assessed by using quantitative real-time polymerase chain reaction. Changes in the expression of p-PI3K, p-Akt, and p-mTOR were evaluated using Western blotting, and autophagosome formation was detected using transmission electron microscopy. Our results indicate that mibefradil reduced the size of H9c2 cells, decreased mRNA expression of atrial natriuretic peptide, brain natriuretic peptide, and β-myosin heavy chain, and decreased the level of autophagic flux. However, MK2206 and rapamycin induced autophagy and reversed the effects of mibefradil on high-glucose-induced H9c2 cells. In conclusion, mibefradil ameliorated high-glucose-induced cardiac hypertrophy by activating the PI3K/Akt/mTOR pathway and inhibiting excessive autophagy. Our study shows that mibefradil can be used therapeutically to ameliorate cardiac hypertrophy in patients with diabetes mellitus.
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16
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Ma W, Liang F, Zhan H, Jiang X, Gao C, Zhang X, Zhang K, Sun Q, Hu H, Zhao Z. Activated FMS-like tyrosine kinase 3 ameliorates angiotensin II-induced cardiac remodelling. Acta Physiol (Oxf) 2020; 230:e13519. [PMID: 32480429 DOI: 10.1111/apha.13519] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 12/15/2022]
Abstract
AIM FMS-like receptor tyrosine kinase 3 (Flt3) has been reported to be increased in cardiomyocytes responding to ischaemic stress. This study was to determine whether Flt3 activation could ameliorate pressure overload-induced heart hypertrophy and fibrosis, and to elucidate the mechanisms of action. METHODS In vivo cardiac hypertrophy and remodelling experiments were conducted by infusing angiotensin II (Ang II) chronically in male C57BL/6 mice. Flt3-specific ligand (FL) was administered intraperitoneally every two days (5 µg/mouse). In vitro experiments on hypertrophy, apoptosis and autophagy mechanism were performed in neonatal rat cardiomyocytes (NRCMs) and H9c2 cells with adenovirus vector-mediated overexpression of Flt3. RESULTS Our results demonstrated that following chronic Ang II infusion for 4 weeks, the mice exhibited heart hypertrophy, fibrosis, apoptosis and contractile dysfunction. Meanwhile, Ang II induced autophagic responses in mouse hearts, as evidenced by increased LC3 II and decreased P62 expression. These pathological alterations in Ang II-treated mice were significantly ameliorated by Flt3 activation with FL administration. In NRCMs and Flt3-overexpressed H9c2 cells, FL attenuated Ang II-induced pathological autophagy and inactivated AMPK/mTORC1/FoxO3a signalling, thereby efficiently mitigating cell hypertrophy and apoptosis. Conversely, the AMPK activator metformin or the mTORC1 inhibitor rapamycin reversed the effects of FL on the alterations of autophagy, hypertrophy and apoptosis in cardiomyocytes induced by Ang II. CONCLUSION Flt3 activation ameliorates cardiac hypertrophy, fibrosis and contractile dysfunction in the mouse model of chronic pressure overload, most likely via suppressing AMPK/mTORC1/FoxO3a-mediated autophagy. These results provide new evidence supporting Flt3 as a novel therapeutic target in maladaptive cardiac remodelling.
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Affiliation(s)
- Wenzhuo Ma
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
| | - Fanfan Liang
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
| | - Heqin Zhan
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Department of Pharmacology College of Pharmacy Xinxiang Medical University Xinxiang Henan China
| | - Xixi Jiang
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
| | - Chenying Gao
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
| | - Xin Zhang
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
| | - Kaina Zhang
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
| | - Qiang Sun
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
| | - Hao Hu
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
| | - Zhenghang Zhao
- Department of Pharmacology School of Basic Medicine Sciences Xi'an Jiaotong University Health Science Center Xi’an Shaanxi China
- Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi'an Jiaotong University Xi’an Shaanxi China
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17
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Li Y, Chen X, Li P, Xiao Q, Hou D, Kong X. CD47 antibody suppresses isoproterenol-induced cardiac hypertrophy through activation of autophagy. Am J Transl Res 2020; 12:5908-5923. [PMID: 33042468 PMCID: PMC7540123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
In this study, we investigated whether CD47 antibody could attenuate isoproterenol (ISO)-induced cardiac hypertrophy in mice and H9C2 cells. Cardiac hypertrophy was induced by intraperitoneal (i.p.) injection of ISO (60 mg.kg-1.d-1 in 100 µl of sterile normal saline) daily for 14 days, and cell hypertrophy was induced by ISO (10-5 mol/l) for 48 h. The injury was confirmed by increased levels of lactate dehydrogenase (LDH) and creatine kinase MB (CK-MB), increased heart-to-body weight (HW/BW) ratio and visible cardiac fibrosis. Apoptosis was evaluated by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining. Autophagic flux in H9c2 cells was monitored by TEM and mRFP-GFP-LC3 virus transfection. The expression levels of Cleaved caspase-3, Cleaved caspase-9 and autophagy-related proteins were detected by Western blotting. CD47 antibody significantly limited ISO-induced increases in LDH, CK-MB, HW/BW ratio and attenuated cardiac fibrosis, oxidative stress, and apoptosis in the heart; CD47 antibody promoted autophagy flow and decreased cell apoptosis in cardiac tissues. Moreover, autophagy inhibitor chloroquine (CQ) reversed the effect of CD47 antibody treatment. In conclusion, CD47 antibody reduced ISO-induced cardiac hypertrophy by improving autophagy flux and rescuing autophagic clearance.
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Affiliation(s)
- Yong Li
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029, Jiangsu Province, P. R. China
| | - Xuguan Chen
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029, Jiangsu Province, P. R. China
| | - Peng Li
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029, Jiangsu Province, P. R. China
| | - Qianxuan Xiao
- Department of Stomatology, Nanjing Medical UniversityNanjing 211166, Jiangsu Province, P. R. China
| | - Daorong Hou
- Key Laboratory of Model Animal Research, Animal Core Facility of Nanjing Medical University, Nanjing Medical UniversityNanjing 211166, Jiangsu Province, P. R. China
| | - Xiangqing Kong
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029, Jiangsu Province, P. R. China
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Teixeira M, Gouveia M, Duarte A, Ferreira M, Simões MI, Conceição M, Silva G, Magalhães S, Ferreira R, Nunes A, Vieira SI, Ribeiro F. Regular Exercise Participation Contributes to Better Proteostasis, Inflammatory Profile, and Vasoactive Profile in Patients With Hypertension. Am J Hypertens 2020; 33:119-123. [PMID: 31560738 DOI: 10.1093/ajh/hpz160] [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] [Received: 06/18/2019] [Revised: 08/05/2019] [Accepted: 09/24/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Physical exercise is a well-established strategy to control blood pressure. Nonetheless, its effects on protein homeostasis in individuals with hypertension are not clearly defined. AIMS Evaluate proteostasis, quality of life, and inflammation, oxidative stress, and vasoactive biomarkers in adults with hypertension regarding reported exercise habits. METHODS Twenty individuals were recruited in a health-care centre, 10 regular exercisers (age: 68.3 ± 4.2 years) and 10 age-matched individuals without regular exercise participation (age: 67.7 ± 5.1 years). Proteostasis and the levels of ubiquitin, heat shock protein 70 (Hsp70), endothelial nitric oxide synthase (eNOS), matrix metalloproteinases 2 (MMP-2), tissue inhibitor of MMP-2 (TIMP-2), connexin 43 (Cx43) and extracellular superoxide dismutase-3 (SOD-3) were assessed in plasma using immunoblotting techniques (western blot or slot blot) and Fourier-transform infrared spectroscopy (FTIR). Quality of life was assessed using the Short Form 36 (SF-36) version 2.0 questionnaire. RESULTS Significant higher levels of interleukin (IL)-6 (P = 0.014), eNOS (P = 0.011), Cx43 (P = 0.020), TIMP-2 (P = 0.038), and SOD-3 (P = 0.001), with a fold increase of 1.5, 1.2, 2.1, 1.3, and 1.2, respectively, were found in the exercise group. The overall quality of life (60.1 ± 4.3 vs. 53.2 ± 5.9, P = 0.009), as well as mental health domain (59.4 ± 7.9 vs. 50.7 ± 7.2, P = 0.024) were significantly higher in the exercise group. Multivariate analysis by FTIR showed that the age-matched group is characterized by peaks related with antiparallel β-sheet, whereas exercise group is characterized by peaks related to random coils, β-sheet, and α-helix. CONCLUSIONS Individuals with regular exercise participation showed better proteostasis, quality of life, inflammatory profile, antioxidant defenses, and eNOS levels.
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Affiliation(s)
- Manuel Teixeira
- Department of Medical Sciences and Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal
| | - Marisol Gouveia
- Department of Medical Sciences and Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal
| | - Ana Duarte
- Unidade Cuidados na Comunidade Cubo Mágico da Saúde, Oliveira do Bairro, Portugal
| | - Miriam Ferreira
- Unidade Cuidados na Comunidade Cubo Mágico da Saúde, Oliveira do Bairro, Portugal
| | - Maria I Simões
- Unidade Cuidados na Comunidade Cubo Mágico da Saúde, Oliveira do Bairro, Portugal
| | - Maria Conceição
- Unidade Cuidados na Comunidade Cubo Mágico da Saúde, Oliveira do Bairro, Portugal
| | - Gladys Silva
- Câmara Municipal de Oliveira do Bairro, Oliveira do Bairro, Portugal
| | - Sandra Magalhães
- Department of Medical Sciences and Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal
- Aveiro Institute of Materials (CICECO), University of Aveiro, Aveiro, Portugal
| | - Rita Ferreira
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Alexandra Nunes
- Department of Medical Sciences and Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal
| | - Sandra I Vieira
- Department of Medical Sciences and Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal
- The Discoveries CTR, University of Aveiro, Aveiro, Portugal
| | - Fernando Ribeiro
- School of Health Sciences and Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal
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19
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Joshi V, Upadhyay A, Prajapati VK, Mishra A. How autophagy can restore proteostasis defects in multiple diseases? Med Res Rev 2020; 40:1385-1439. [PMID: 32043639 DOI: 10.1002/med.21662] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 01/03/2020] [Accepted: 01/28/2020] [Indexed: 12/12/2022]
Abstract
Cellular evolution develops several conserved mechanisms by which cells can tolerate various difficult conditions and overall maintain homeostasis. Autophagy is a well-developed and evolutionarily conserved mechanism of catabolism, which endorses the degradation of foreign and endogenous materials via autolysosome. To decrease the burden of the ubiquitin-proteasome system (UPS), autophagy also promotes the selective degradation of proteins in a tightly regulated way to improve the physiological balance of cellular proteostasis that may get perturbed due to the accumulation of misfolded proteins. However, the diverse as well as selective clearance of unwanted materials and regulations of several cellular mechanisms via autophagy is still a critical mystery. Also, the failure of autophagy causes an increase in the accumulation of harmful protein aggregates that may lead to neurodegeneration. Therefore, it is necessary to address this multifactorial threat for in-depth research and develop more effective therapeutic strategies against lethal autophagy alterations. In this paper, we discuss the most relevant and recent reports on autophagy modulations and their impact on neurodegeneration and other complex disorders. We have summarized various pharmacological findings linked with the induction and suppression of autophagy mechanism and their promising preclinical and clinical applications to provide therapeutic solutions against neurodegeneration. The conclusion, key questions, and future prospectives sections summarize fundamental challenges and their possible feasible solutions linked with autophagy mechanism to potentially design an impactful therapeutic niche to treat neurodegenerative diseases and imperfect aging.
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Affiliation(s)
- Vibhuti Joshi
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Karwar, India
| | - Arun Upadhyay
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Karwar, India
| | - Vijay K Prajapati
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Ajmer, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Karwar, India
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20
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Wang XQY, Xu ZT, Zhang GP, Hou N, Mo QX, Wei J, Jiang X, Liu Y, Luo JD. Endophilin A2 attenuates cardiac hypertrophy induced by isoproterenol through the activation of autophagy. Am J Transl Res 2019; 11:5065-5075. [PMID: 31497222 PMCID: PMC6731414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
Decreased autophagy has been reported to contribute to the progression of cardiac hypertrophy. Our previous research has demonstrated that endophilin A2 (EndoA2) attenuates H2O2-induced cardiomyocyte apoptosis by strengthening autophagy. However, the role of EndoA2 in the regulation of autophagy in cardiac hypertrophy is unknown. In this study, we tested the hypothesis that EndoA2 suppresses cardiac hypertrophy induced by isoproterenol (ISO) by activating autophagy. In vivo, we established a cardiac hypertrophy model by subcutaneous injection of ISO and used intramyocardial delivery of adenovirus vector harboring EndoA2 cDNA (Ad-EndoA2) to overexpress EndoA2. The cardiac hypertrophic response and autophagy level were measured. EndoA2 overexpression suppressed pathological cardiac hypertrophy and enhanced autophagy in rat hearts. In addition, the effects of EndoA2 on cardiac hypertrophy and autophagy were observed in cultured neonatal rat cardiomyocytes (NRCMs) with gain- and loss-of-function approaches to regulate EndoA2 expression. The results were consistent with those of the in vivo study. Furthermore, the involvement of EndoA2-mediated autophagy in the attenuation of ISO-induced cardiac hypertrophy was explored by pharmaceutical inhibition of autophagy. Pretreatment with 3-methyladenine (3-MA) clearly diminished the anti-hypertrophic effects of EndoA2 in ISO-treated NRCMs. The results presented here provide the first evidence that EndoA2 is involved in ISO-induced cardiac hypertrophy. The anti-hypertrophic effects of EndoA2 can be partially attributed to its regulation of autophagy.
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Affiliation(s)
- Xin-Qiu-Yue Wang
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Zong-Tang Xu
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Gui-Ping Zhang
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Ning Hou
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Qin-Xing Mo
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Jie Wei
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Xin Jiang
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Yun Liu
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Jian-Dong Luo
- Department of Pharmacology, Guangzhou Institute of Cardiovascular Disease, Guangzhou Key Laboratory of Cardiovascular Disease, and The Second Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 510260, Guangdong, P. R. China
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21
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Huo J, Jiang W, Geng J, Chen C, Zhu L, Chen R, Ge T, Chang Q, Jiang Z, Shan Q. Renal denervation attenuates pressure overload-induced cardiac remodelling in rats with biphasic regulation of autophagy. Acta Physiol (Oxf) 2019; 226:e13272. [PMID: 30830723 DOI: 10.1111/apha.13272] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 02/21/2019] [Accepted: 03/01/2019] [Indexed: 12/19/2022]
Abstract
AIM This study aimed to investigate effects of renal denervation (RDN) on pressure overload-induced cardiac remodelling in rats and the related mechanisms. METHODS Adult male Sprague-Dawley rats underwent transverse aortic constriction (TAC) to generate cardiac remodelling. RDN was performed 1 week after TAC. The animals were divided into four groups: control group, TAC group, TAC+RDN group and control+RDN group. Rats in all groups were studied at 3 and 10 weeks after TAC respectively. Echocardiography and histology were used to evaluate cardiac function and pathological changes. TUNEL staining and western blotting were used to assess apoptosis. Western blotting and transmission electron microscopy (TEM) were used to evaluate autophagy. RESULTS Three weeks after TAC, the TAC rats exhibited cardiac hypertrophy with normal cardiac function and no myocardial interstitial fibrosis or apoptosis, accompanied by a lower LC3 II level and fewer autophagic vacuoles in the left ventricles, both in the presence and absence of chloroquine (CQ), indicating suppressed autophagy at this stage. RDN ameliorated these pathological changes and attenuated the decrease in autophagy. Ten weeks after TAC, the TAC rats had decreased cardiac function, obvious cardiac interstitial fibrosis and apoptosis, with increased autophagy. RDN prevented these pathological changes, coincident with attenuation of increased autophagy. CONCLUSION Autophagy was suppressed at the early stage but activated at the late stage of TAC-induced cardiac remodelling. RDN attenuated the pathological changes of TAC rats, accompanied by attenuation of the changes in autophagy. Thus, RDN ameliorated TAC-induced cardiac remodelling partially associated with biphasic modulation of autophagy.
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Affiliation(s)
- Jun‐Yu Huo
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Wan‐Ying Jiang
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Jie Geng
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Chu Chen
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Lin Zhu
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Ran Chen
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Tian‐Tian Ge
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Qing Chang
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Zhi‐Xin Jiang
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Qi‐Jun Shan
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing China
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22
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Wang X, Deng Y, Zhang G, Li C, Ding G, May HI, Tran DH, Luo X, Jiang DS, Li DL, Wei X, Xu L, Ferdous A, Gillette TG, Scherer PE, Jiang X, Wang ZV. Spliced X-box Binding Protein 1 Stimulates Adaptive Growth Through Activation of mTOR. Circulation 2019; 140:566-579. [PMID: 31177839 DOI: 10.1161/circulationaha.118.038924] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The unfolded protein response plays versatile roles in physiology and pathophysiology. Its connection to cell growth, however, remains elusive. Here, we sought to define the role of unfolded protein response in the regulation of cardiomyocyte growth in the heart. METHODS We used both gain- and loss-of-function approaches to genetically manipulate XBP1s (spliced X-box binding protein 1), the most conserved signaling branch of the unfolded protein response, in the heart. In addition, primary cardiomyocyte culture was used to address the role of XBP1s in cell growth in a cell-autonomous manner. RESULTS We found that XBP1s expression is reduced in both human and rodent cardiac tissues under heart failure. Furthermore, deficiency of XBP1s leads to decompensation and exacerbation of heart failure progression under pressure overload. On the other hand, cardiac-restricted overexpression of XBP1s prevents the development of cardiac dysfunction. Mechanistically, we found that XBP1s stimulates adaptive cardiac growth through activation of the mechanistic target of rapamycin signaling, which is mediated via FKBP11 (FK506-binding protein 11), a novel transcriptional target of XBP1s. Moreover, silencing of FKBP11 significantly diminishes XBP1s-induced mechanistic target of rapamycin activation and adaptive cell growth. CONCLUSIONS Our results reveal a critical role of the XBP1s-FKBP11-mechanistic target of rapamycin axis in coupling of the unfolded protein response and cardiac cell growth regulation.
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Affiliation(s)
- Xiaoding Wang
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Yingfeng Deng
- Touchstone Diabetes Center (Y.D., P.E.S.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Guangyu Zhang
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Chao Li
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Guanqiao Ding
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Herman I May
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Diem H Tran
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Xiang Luo
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Ding-Sheng Jiang
- Division of Cardiothoracic and Vascular Surgery, Key Laboratory of Organ Transplantation of Ministry of Education and Key Laboratory of Organ Transplantation of Ministry of Health, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (D.-S.J., X. Wei)
| | - Dan L Li
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Xiang Wei
- Division of Cardiothoracic and Vascular Surgery, Key Laboratory of Organ Transplantation of Ministry of Education and Key Laboratory of Organ Transplantation of Ministry of Health, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (D.-S.J., X. Wei)
| | - Lin Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei, China (L.X., X.J.)
| | - Anwarul Ferdous
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Thomas G Gillette
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Philipp E Scherer
- Touchstone Diabetes Center (Y.D., P.E.S.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Xuejun Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Hubei, China (L.X., X.J.)
| | - Zhao V Wang
- Division of Cardiology (X. Wang, G.Z., C.L., G.D., H.I.M., D.H.T., X.L., D.L.L., A.F., T.G.G., Z.V.W.), Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
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23
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González A, Ravassa S, López B, Moreno MU, Beaumont J, San José G, Querejeta R, Bayés-Genís A, Díez J. Myocardial Remodeling in Hypertension. Hypertension 2019; 72:549-558. [PMID: 30354762 DOI: 10.1161/hypertensionaha.118.11125] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Arantxa González
- From the Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.)
| | - Susana Ravassa
- From the Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.)
| | - Begoña López
- From the Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.)
| | - María U Moreno
- From the Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.)
| | - Javier Beaumont
- From the Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.)
| | - Gorka San José
- From the Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.)
| | - Ramón Querejeta
- Division of Cardiology, Donostia University Hospital, University of the Basque Country, San Sebastián, Spain (R.Q.)
| | - Antoni Bayés-Genís
- CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.).,Heart Failure Unit and Cardiology Service, Hospital Universitari Germans Trias i Pujol, Badalona, Spain (A.B.-G.).,Department of Medicine, Universitat Autònoma de Barcelona, Spain (A.B.-G.)
| | - Javier Díez
- From the Program of Cardiovascular Diseases, Center for Applied Medical Research, University of Navarra, Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., J.D.).,CIBERCV, Carlos III Institute of Health, Madrid, Spain (A.G., S.R., B.L., M.U.M., J.B., G.S.J., A.B.-G., J.D.).,Department of Cardiology and Cardiac Surgery (J.D.).,Department of Nephrology (J.D.), University of Navarra Clinic, University of Navarra, Pamplona, Spain
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24
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Naruse G, Kanamori H, Yoshida A, Minatoguchi S, Kawaguchi T, Iwasa M, Yamada Y, Mikami A, Kawasaki M, Nishigaki K, Minatoguchi S. The intestine responds to heart failure by enhanced mitochondrial fusion through glucagon-like peptide-1 signalling. Cardiovasc Res 2019; 115:1873-1885. [DOI: 10.1093/cvr/cvz002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/13/2018] [Accepted: 01/04/2019] [Indexed: 12/25/2022] Open
Abstract
Abstract
Aims
Glucagon-like peptide-1 (GLP-1) is a neuroendocrine hormone secreted by the intestine. Its receptor (GLP-1R) is expressed in various organs, including the heart. However, the dynamics and function of the GLP-1 signal in heart failure remains unclear. We investigated the impact of the cardio-intestinal association on hypertensive heart failure using miglitol, an α-glucosidase inhibitor known to stimulate intestinal GLP-1 production.
Methods and results
Dahl salt-sensitive (DS) rats fed a high-salt diet were assigned to miglitol, exendin (9-39) (GLP-1R blocker) and untreated control groups and treated for 11 weeks. Control DS rats showed marked hypertension and cardiac dysfunction with left ventricular dilatation accompanied by elevated plasma GLP-1 levels and increased cardiac GLP-1R expression as compared with age-matched Dahl salt-resistant (DR) rats. Miglitol further increased plasma GLP-1 levels, suppressed adverse cardiac remodelling, and mitigated cardiac dysfunction. In cardiomyocytes from miglitol-treated DS hearts, mitochondrial size was significantly larger with denser cristae than in cardiomyocytes from control DS hearts. The change in mitochondrial morphology reflected enhanced mitochondrial fusion mediated by protein kinase A activation leading to phosphorylation of dynamin-related protein 1, expression of mitofusin-1 and OPA-1, and increased myocardial adenosine triphosphate (ATP) content. GLP-1R blockade with exendin (9-39) exacerbated cardiac dysfunction and led to fragmented mitochondria with disarrayed cristae in cardiomyocytes and reduction of myocardial ATP content. In cultured cardiomyocytes, GLP-1 increased expression of mitochondrial fusion-related proteins and ATP content. When GLP-1 and exendin (9-39) were administered together, their effects cancelled out.
Conclusions
Increased intestinal GLP-1 secretion is an adaptive response to heart failure that is enhanced by miglitol. This could be an effective strategy for treating heart failure through regulation of mitochondrial dynamics.
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Affiliation(s)
- Genki Naruse
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Hiromitsu Kanamori
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Akihiro Yoshida
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Shingo Minatoguchi
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Tomonori Kawaguchi
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Masamitsu Iwasa
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Yoshihisa Yamada
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Atsushi Mikami
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Masanori Kawasaki
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Kazuhiko Nishigaki
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Shinya Minatoguchi
- Department of Cardiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, Japan
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25
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Wang Q, Tan K, Xia H, Gao Y. Left ventricular metabolic remodeling and accompanied dysfunction in type 2 diabetic patients: A 3D speckle tracking analysis. Echocardiography 2019; 36:486-494. [PMID: 30632188 DOI: 10.1111/echo.14248] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/20/2018] [Accepted: 12/07/2018] [Indexed: 01/04/2023] Open
Abstract
PURPOSES The purposes of our study were to determine the risk factors related to metabolic left ventricular remodeling (LVR) in type 2 diabetes mellitus (T2DM) patients and to assess the LV function with different geometry in such population. METHODS Seventy-eight T2DM patients with normal 2D-LVEF (≥55%) were enrolled and divided into two groups with LV normal geometry (LVN) and with LV remodeling (LVR). The control group was composed of forty age- and sex-matched healthy individuals with LVN. A multifactor logistic regression was used to determine the risk factors for LVR, and their diagnostic values were evaluated using the area under the ROC curves (AUC). Three-dimensional speckle tracking echocardiography (3DSTE) was used to measure LV global longitudinal strain (GLS), global circumferential strain (GCS), global area strain (GAS), and global radial strain (GRS). RESULTS Fasting plasma glucose (FPG), hyperlipidemia, and BMI were independently associated with LVR in T2DM patients, and the AUC values were 0.699, 0.697, and 0.732, respectively. The T2DM patients with LVN showed significantly lower GLS than the controls (P < 0.05), whereas the T2DM patients with LVR showed significantly lower GLS, GCS, GAS, and GRS than the T2DM patients with LVN (all P < 0.01). Additionally, GLS, GAS, and GRS values decreased significantly in the T2DM patients with LV hypertrophy than in those with LV concentric remodeling (all P < 0.05). CONCLUSIONS The routine echocardiography and 3DSTE could be used in combining way to detect the metabolic LV remodeling and accompanied dysfunction in T2DM patients.
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Affiliation(s)
- Qingqing Wang
- Department of Ultrasound, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Kaibin Tan
- Department of Ultrasound, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hongmei Xia
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Yunhua Gao
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
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26
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Dong Y, Bai Y, Zhang S, Xu W, Xu J, Zhou Y, Zhang S, Wu Y, Yu H, Cao N, Liu H, Wang W. Cyclic peptide RD808 reduces myocardial injury induced by β 1-adrenoreceptor autoantibodies. Heart Vessels 2018; 34:1040-1051. [PMID: 30554265 DOI: 10.1007/s00380-018-1321-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 12/07/2018] [Indexed: 10/27/2022]
Abstract
Autoantibodies against the second extracellular loop of β1-adrenergic receptor (β1-AA) have been shown to be involved in the development of cardiovascular diseases. Recently, there has been considerable interest in strategies to remove these autoantibodies, particularly therapeutic peptides to neutralize β1-AA. Researchers are investigating the roles of cyclic peptides that mimic the structure of relevant epitopes on the β1-AR-ECII in a number of immune-mediated diseases. Here, we used a cyclic peptide, namely, RD808, to neutralize β1-AA, consequently alleviating β1-AA-induced myocardial injury. We investigated the protective effects of RD808 on the myocardium both in vitro and in vivo. RD808 was found to increase the survival rate of cardiomyocytes; furthermore, it decreased myocardial necrosis and apoptosis and improved the cardiac function of BalB/c mice in a β1-AA transfer model. In vitro and in vivo experiments showed that myocardial autophagy was increased in the presence of RD808, which might contribute to its cardioprotective effects. Our findings indicate that RD808 reduced myocardial injury induced by β1-AA.
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Affiliation(s)
- Yu Dong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yan Bai
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Shangyue Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Wenli Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Jiahui Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yi Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Suli Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Ye Wu
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Haicun Yu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Ning Cao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China. .,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China.
| | - Wen Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No. 10 Xitoutiao, You An Men Wai, Beijing, 100069, China. .,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China.
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27
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Lee YM, Kim MK, Choo H, Chong Y. Conjugation with Phenylalanine Enhances Autophagy-Inducing Activity of (-)-Epigallocatechin Gallate in Hepatic Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:12741-12747. [PMID: 30418776 DOI: 10.1021/acs.jafc.8b05361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Given the importance of (-)-epigallocatechin gallate (EGCG) as an autophagy-enhancing and thereby lipid-lowering agent, optimization of its activity warrants its therapeutic potential in the treatment of hepatic diseases as well as metabolic disorders. On the basis of our previous observations that structural modifications provided substantial improvements in the bioactivity of EGCG, we investigated the autophagy-enhancing activity of EGCG derivatives. Among 14 EGCG derivatives, E10 with a phenylalanine attached to the D ring of EGCG exhibited the most promising effects in stimulating autophagy in Huh7 cells, which was supported by several lines of evidence: (1) stimulation of autophagy revealed by an increased amount of LC3B-II (4.1 ± 0.8-fold compared to the control) as well as the 2.0 ± 0.1-fold activation of adenosine monophosphate-activated protein kinase in the presence of E10 and (2) E10-stimulated autophagic flux demonstrated by a 1.6 ± 0.4-fold increase in LC3B-II upon co-treatment with chloroquine, 38.1 ± 5.6% reduction of p62/SQSTM1, and an increase in the formation of autophagic compartments visualized by both CYTO-ID staining (3.0 ± 0.1-fold) and tandem RFP-GFP-LC3 fluorescence (2.7 ± 0.4- and 3.2 ± 0.3-fold for green and red fluorescence, respectively). Finally, the autophagy-inducing activity of E10 culminated in a 5.3-fold reduction of hepatic lipid accumulation caused by fatty acids. In all of the assay settings, E10 was consistently 1.3-3.5-fold more potent than EGCG. Taken together, we demonstrated a significant increase in autophagy-stimulating activity of EGCG through structural modifications.
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Affiliation(s)
- Yong Min Lee
- Department of Bioscience and Biotechnology, Reverse Metabolomics Research Center , Konkuk University , 1 Hwayang-dong , Gwangjin-gu, Seoul 143-701 , Korea
| | - Mi Kyoung Kim
- Department of Bioscience and Biotechnology, Reverse Metabolomics Research Center , Konkuk University , 1 Hwayang-dong , Gwangjin-gu, Seoul 143-701 , Korea
| | - Hyunah Choo
- Neuro-Medicine Center, Life/Health Division , Korea Institute of Science and Technology , 39-1 Hawolgok-dong , Seongbuk-gu, Seoul 136-791 , Korea
| | - Youhoon Chong
- Department of Bioscience and Biotechnology, Reverse Metabolomics Research Center , Konkuk University , 1 Hwayang-dong , Gwangjin-gu, Seoul 143-701 , Korea
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Sun T, Li MY, Li PF, Cao JM. MicroRNAs in Cardiac Autophagy: Small Molecules and Big Role. Cells 2018; 7:cells7080104. [PMID: 30103495 PMCID: PMC6116024 DOI: 10.3390/cells7080104] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 12/12/2022] Open
Abstract
Autophagy, which is an evolutionarily conserved process according to the lysosomal degradation of cellular components, plays a critical role in maintaining cell homeostasis. Autophagy and mitochondria autophagy (mitophagy) contribute to the preservation of cardiac homeostasis in physiological settings. However, impaired or excessive autophagy is related to a variety of diseases. Recently, a close link between autophagy and cardiac disorders, including myocardial infarction, cardiac hypertrophy, cardiomyopathy, cardiac fibrosis, and heart failure, has been demonstrated. MicroRNAs (miRNAs) are a class of small non-coding RNAs with a length of approximately 21–22 nucleotides (nt), which are distributed widely in viruses, plants, protists, and animals. They function in mediating the post-transcriptional gene silencing. A growing number of studies have demonstrated that miRNAs regulate cardiac autophagy by suppressing the expression of autophagy-related genes in a targeted manner, which are involved in the pathogenesis of heart diseases. This review summarizes the role of microRNAs in cardiac autophagy and related cardiac disorders. Furthermore, we mainly focused on the autophagy regulation pathways, which consisted of miRNAs and their targeted genes.
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Affiliation(s)
- Teng Sun
- Key Laboratory of Cellular Physiology, Ministry of Education, Department of Physiology, Shanxi Medical University, Taiyuan 030001, China.
| | - Meng-Yang Li
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China.
| | - Pei-Feng Li
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China.
| | - Ji-Min Cao
- Key Laboratory of Cellular Physiology, Ministry of Education, Department of Physiology, Shanxi Medical University, Taiyuan 030001, China.
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29
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Wiersma M, Beuren TMA, de Vrij EL, Reitsema VA, Bruintjes JJ, Bouma HR, Brundel BJJM, Henning RH. Torpor-arousal cycles in Syrian hamster heart are associated with transient activation of the protein quality control system. Comp Biochem Physiol B Biochem Mol Biol 2018; 223:23-28. [PMID: 29894736 DOI: 10.1016/j.cbpb.2018.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/28/2018] [Accepted: 06/04/2018] [Indexed: 12/14/2022]
Abstract
Hibernation consists of torpor, with marked suppression of metabolism and physiological functions, alternated with arousal periods featuring their full restoration. The heart is particularly challenged, exemplified by its rate reduction from 400 to 5-10 beats per minute during torpor in Syrian hamsters. In addition, during arousals, the heart needs to accommodate the very rapid return to normal function, which lead to our hypothesis that cardiac function during hibernation is supported by maintenance of protein homeostasis through adaptations in the protein quality control (PQC) system. Hereto, we examined autophagy, the endoplasmic reticulum (ER) unfolded protein (UPRER) response and the heat shock response (HSR) in Syrian hamster hearts during torpor and arousal. Transition from torpor to arousal (1.5 h) was associated with stimulation of the PQC system during early arousal, demonstrated by induction of autophagosomes, as shown by an increase in LC3B-II protein abundance, likely related to the activation of the UPRER during late torpor in response to proteotoxic stress. The HSR was not activated during torpor or arousal. Our results demonstrate activation of the cardiac PQC system - particularly autophagosomal degradation - in early arousal in response to cardiac stress, to clear excess aberrant or damaged proteins, being gradually formed during the torpor bout and/or the rapid increase in heart rate during the transition from torpor to arousal. This mechanism may enable the large gain in cardiac function during the transition from torpor to arousal, which may hold promise to further understand 'hibernation' of cardiomyocytes in human heart disease.
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Affiliation(s)
- Marit Wiersma
- Department of Physiology, Amsterdam Cardiovascular Sciences, VU University Medical Center, Amsterdam, The Netherlands; Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, The Netherlands.
| | - Thais M A Beuren
- Department of Physiology, Amsterdam Cardiovascular Sciences, VU University Medical Center, Amsterdam, The Netherlands; Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, The Netherlands
| | - Edwin L de Vrij
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, The Netherlands; Department of Surgery, Martini Hospital, Groningen, The Netherlands
| | - Vera A Reitsema
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, The Netherlands
| | - Jantje J Bruintjes
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, The Netherlands
| | - Hjalmar R Bouma
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, The Netherlands; Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Bianca J J M Brundel
- Department of Physiology, Amsterdam Cardiovascular Sciences, VU University Medical Center, Amsterdam, The Netherlands; Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, The Netherlands
| | - Robert H Henning
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, The Netherlands
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30
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Transcriptome Analysis of Porcine PBMCs Reveals the Immune Cascade Response and Gene Ontology Terms Related to Cell Death and Fibrosis in the Progression of Liver Failure. Can J Gastroenterol Hepatol 2018; 2018:2101906. [PMID: 29850453 PMCID: PMC5925156 DOI: 10.1155/2018/2101906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 03/04/2018] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The key gene sets involved in the progression of acute liver failure (ALF), which has a high mortality rate, remain unclear. This study aims to gain a deeper understanding of the transcriptional response of peripheral blood mononuclear cells (PBMCs) following ALF. METHODS ALF was induced by D-galactosamine (D-gal) in a porcine model. PBMCs were separated at time zero (baseline group), 36 h (failure group), and 60 h (dying group) after D-gal injection. Transcriptional profiling was performed using RNA sequencing and analysed using DAVID bioinformatics resources. RESULTS Compared with the baseline group, 816 and 1,845 differentially expressed genes (DEGs) were identified in the failure and dying groups, respectively. A total of five and two gene ontology (GO) term clusters were enriched in 107 GO terms in the failure group and 154 GO terms in the dying group. These GO clusters were primarily immune-related, including genes regulating the inflammasome complex and toll-like receptor signalling pathways. Specifically, GO terms related to cell death, including apoptosis, pyroptosis, and autophagy, and those related to fibrosis, coagulation dysfunction, and hepatic encephalopathy were enriched. Seven Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, cytokine-cytokine receptor interaction, hematopoietic cell lineage, lysosome, rheumatoid arthritis, malaria, and phagosome and pertussis pathways were mapped for DEGs in the failure group. All of these seven KEGG pathways were involved in the 19 KEGG pathways mapped in the dying group. CONCLUSION We found that the dramatic PBMC transcriptome changes triggered by ALF progression was predominantly related to immune responses. The enriched GO terms related to cell death, fibrosis, and so on, as indicated by PBMC transcriptome analysis, seem to be useful in elucidating potential key gene sets in the progression of ALF. A better understanding of these gene sets might be of preventive or therapeutic interest.
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31
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Wang Y, Zhang Y, Ding G, May HI, Xu J, Gillette TG, Wang H, Wang ZV. Temporal dynamics of cardiac hypertrophic growth in response to pressure overload. Am J Physiol Heart Circ Physiol 2017; 313:H1119-H1129. [PMID: 28822967 DOI: 10.1152/ajpheart.00284.2017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 07/25/2017] [Accepted: 08/11/2017] [Indexed: 01/20/2023]
Abstract
Hypertension is one of the most important risk factors of heart failure. In response to high blood pressure, the left ventricle manifests hypertrophic growth to ameliorate wall stress, which may progress into decompensation and trigger pathological cardiac remodeling. Despite the clinical importance, the temporal dynamics of pathological cardiac growth remain elusive. Here, we took advantage of the puromycin labeling approach to measure the relative rates of protein synthesis as a way to delineate the temporal regulation of cardiac hypertrophic growth. We first identified the optimal treatment conditions for puromycin in neonatal rat ventricular myocyte culture. We went on to demonstrate that myocyte growth reached its peak rate after 8-10 h of growth stimulation. At the in vivo level, with the use of an acute surgical model of pressure-overload stress, we observed the maximal growth rate to occur at day 7 after surgery. Moreover, RNA sequencing analysis supports that the most profound transcriptomic changes occur during the early phase of hypertrophic growth. Our results therefore suggest that cardiac myocytes mount an immediate growth response in reply to pressure overload followed by a gradual return to basal levels of protein synthesis, highlighting the temporal dynamics of pathological cardiac hypertrophic growth.NEW & NOTEWORTHY We determined the optimal conditions of puromycin incorporation in cardiac myocyte culture. We took advantage of this approach to identify the growth dynamics of cardiac myocytes in vitro. We went further to discover the protein synthesis rate in vivo, which provides novel insights about cardiac temporal growth dynamics in response to pressure overload.
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Affiliation(s)
- Yuan Wang
- Division of Cardiology, Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas.,State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China; and
| | - Yuannyu Zhang
- Department of Pediatrics, Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Guanqiao Ding
- Division of Cardiology, Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Herman I May
- Division of Cardiology, Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Jian Xu
- Department of Pediatrics, Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Thomas G Gillette
- Division of Cardiology, Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Hang Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China; and
| | - Zhao V Wang
- Division of Cardiology, Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas;
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32
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Xiao Y, Yang Z, Wu QQ, Jiang XH, Yuan Y, Chang W, Bian ZY, Zhu JX, Tang QZ. Cucurbitacin B Protects Against Pressure Overload Induced Cardiac Hypertrophy. J Cell Biochem 2017; 118:3899-3910. [PMID: 28390176 DOI: 10.1002/jcb.26041] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Accepted: 04/07/2017] [Indexed: 12/31/2022]
Abstract
Lack of effective anti-cardiac hypertrophy drugs creates a major cause for the increasing prevalence of heart failure. In the present study, we determined the anti-hypertrophy and anti-fibrosis potential of a natural plant triterpenoid, Cucurbitacin B both in vitro and in vivo. Aortic banding (AB) was performed to induce cardiac hypertrophy. After 1 week of surgery, mice were receive cucurbitacin B treatment (Gavage, 0.2 mg/kg body weight/2 day). After 4 weeks of AB, cucurbitacin B demonstrated a strong anti-hypertrophy and -fibrosis ability as evidenced by decreased of heart weight, myocardial cell cross-sectional area and interstitial fibrosis, ameliorated of systolic and diastolic abnormalities, normalized in gene expression of hypertrophic and fibrotic markers, reserved microvascular density in pressure overload induced hypertrophic mice. Cucurbitacin B also showed significant hypertrophy inhibitory effect in phenylephrine stimulated cardiomyocytes. The Cucurbitacin B-mediated mitigated cardiac hypertrophy was attributable to the increasing level of autophagy, which was associated with the blockade of Akt/mTOR/FoxO3a signal pathway, validated by SC79, MK2206, and 3-MA, the Akt agonist, inhibitor and autophagy inhibitor in vitro. The overexpression of constitutively active Akt completely abolished the Cucurbitacin B-mediated protection of cardiac hypertrophy in human cardiomyocytes AC16. Collectively, our findings suggest that cucurbitacin B protects against cardiac hypertrophy through increasing the autophagy level in cardiomyocytes, which is associated with the inhibition of Akt/mTOR/FoxO3a signal axis. J. Cell. Biochem. 118: 3899-3910, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Yang Xiao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
| | - Zheng Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
| | - Qing-Qing Wu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
| | - Xiao-Han Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
| | - Yuan Yuan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
| | - Wei Chang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
| | - Zhou Yan Bian
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
| | - Jin Xiu Zhu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China
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Berger MD, Yamauchi S, Cao S, Hanna DL, Sunakawa Y, Schirripa M, Matsusaka S, Yang D, Groshen S, Zhang W, Ning Y, Okazaki S, Miyamoto Y, Suenaga M, Lonardi S, Cremolini C, Falcone A, Heinemann V, Loupakis F, Stintzing S, Lenz HJ. Autophagy-related polymorphisms predict hypertension in patients with metastatic colorectal cancer treated with FOLFIRI and bevacizumab: Results from TRIBE and FIRE-3 trials. Eur J Cancer 2017; 77:13-20. [PMID: 28347919 DOI: 10.1016/j.ejca.2017.02.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 02/17/2017] [Accepted: 02/23/2017] [Indexed: 12/22/2022]
Abstract
PURPOSE The most frequent bevacizumab-related side-effects are hypertension, proteinuria, bleeding and thromboembolism. To date, there is no biomarker that predicts anti-VEGF-associated toxicity. As autophagy inhibits angiogenesis, we hypothesised that single-nucleotide polymorphisms (SNPs) within autophagy-related genes may predict bevacizumab-mediated toxicity in patients with metastatic colorectal cancer (mCRC). PATIENTS AND METHODS Patients with mCRC treated with first-line FOLFIRI and bevacizumab in two phase III randomised trials, namely the TRIBE trial (n = 219, discovery cohort) and the FIRE-3 trial (n = 234, validation cohort) were included in this study. Patients receiving treatment with FOLFIRI and cetuximab (FIRE-3, n = 204) served as a negative control. 12 SNPs in eight autophagy-related genes (ATG3/5/8/13, beclin 1, FIP200, unc-51-like kinase 1, UVRAG) were analysed by PCR-based direct sequencing. RESULTS The FIP200 rs1129660 variant showed significant associations with hypertension in the TRIBE cohort. Patients harbouring any G allele of the FIP200 rs1129660 SNP showed a significantly lower rate of grade 2-3 hypertension compared with the A/A genotype (3% versus 15%, odds ratio [OR] 0.17; 95% confidence interval [CI], 0.02-0.73; P = 0.009). Similarly, G allele carriers of the FIP200 rs1129660 SNP were less likely to develop grade 2-3 hypertension than patients with an A/A genotype in the FIRE-3 validation cohort (9% versus 20%, OR 0.43; 95% CI, 0.14-1.11; P = 0.077), whereas this association could not be observed in the control cohort (12% versus 9%, OR 1.40; 95% CI, 0.45-4.04; P = 0.60). CONCLUSION This is the first report demonstrating that polymorphisms in the autophagy-related FIP200 gene may predict hypertension in patients with mCRC treated with FOLFIRI and bevacizumab.
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Affiliation(s)
- Martin D Berger
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Shinichi Yamauchi
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Shu Cao
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Diana L Hanna
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Yu Sunakawa
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Marta Schirripa
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA; Oncologia Medica 1, Istituto Oncologico Veneto, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Via Gattamelata 64, 35128 Padova, Italy
| | - Satoshi Matsusaka
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Dongyun Yang
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Susan Groshen
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Wu Zhang
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Yan Ning
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Satoshi Okazaki
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Yuji Miyamoto
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Mitsukuni Suenaga
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Sara Lonardi
- Oncologia Medica 1, Istituto Oncologico Veneto, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Via Gattamelata 64, 35128 Padova, Italy
| | - Chiara Cremolini
- U.O. Oncologia Medica, Azienda Ospedaliero-Universitaria Pisana, Istituto Toscano Tumori, Via Roma 67, 56126 Pisa, Italy
| | - Alfredo Falcone
- U.O. Oncologia Medica, Azienda Ospedaliero-Universitaria Pisana, Istituto Toscano Tumori, Via Roma 67, 56126 Pisa, Italy
| | - Volker Heinemann
- Department of Medical Oncology and Comprehensive Cancer Center, University of Munich (LMU), Marchioninistrasse 15, 81377 Munich, Germany
| | - Fotios Loupakis
- Oncologia Medica 1, Istituto Oncologico Veneto, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Via Gattamelata 64, 35128 Padova, Italy
| | - Sebastian Stintzing
- Department of Medical Oncology and Comprehensive Cancer Center, University of Munich (LMU), Marchioninistrasse 15, 81377 Munich, Germany
| | - Heinz-Josef Lenz
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA; Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA.
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Zhang S, Lin X, Li G, Shen X, Niu D, Lu G, Fu X, Chen Y, Cui M, Bai Y. Knockout of Eva1a leads to rapid development of heart failure by impairing autophagy. Cell Death Dis 2017; 8:e2586. [PMID: 28151473 PMCID: PMC5386466 DOI: 10.1038/cddis.2017.17] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 01/09/2017] [Accepted: 01/09/2017] [Indexed: 01/13/2023]
Abstract
EVA1A (Eva-1 homologue A) is a novel lysosome and endoplasmic reticulum-associated protein that can regulate cell autophagy and apoptosis. Eva1a is expressed in the myocardium, but its function in myocytes has not yet been investigated. Therefore, we generated inducible, cardiomyocyte-specific Eva1a knockout mice with an aim to determine the role of Eva1a in cardiac remodelling in the adult heart. Data from experiments showed that loss of Eva1a in the adult heart increased cardiac fibrosis, promoted cardiac hypertrophy, and led to cardiomyopathy and death. Further investigation suggested that this effect was associated with impaired autophagy and increased apoptosis in Eva1a knockout hearts. Moreover, knockout of Eva1a activated Mtor signalling and the subsequent inhibition of autophagy. In addition, Eva1a knockout hearts showed disorganized sarcomere structure and mitochondrial misalignment and aggregation, leading to the lack of ATP generation. Collectively, these data demonstrated that Eva1a improves cardiac function and inhibits cardiac hypertrophy and fibrosis by increasing autophagy. In conclusion, our results demonstrated that Eva1a may have an important role in maintaining cardiac homeostasis.
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Affiliation(s)
- Shu Zhang
- Department of Cardiology, Peking University Third Hospital, Beijing 100191, China
| | - Xin Lin
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.,Peking University Center for Human Disease Genomics, Beijing 100191, China
| | - Ge Li
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.,Peking University Center for Human Disease Genomics, Beijing 100191, China
| | - Xue Shen
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Di Niu
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Guang Lu
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597
| | - Xin Fu
- Department of Cardiology, Peking University Third Hospital, Beijing 100191, China
| | - Yingyu Chen
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.,Peking University Center for Human Disease Genomics, Beijing 100191, China
| | - Ming Cui
- Department of Cardiology, Peking University Third Hospital, Beijing 100191, China
| | - Yun Bai
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
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35
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Moreno MU, Eiros R, Gavira JJ, Gallego C, González A, Ravassa S, López B, Beaumont J, San José G, Díez J. The Hypertensive Myocardium: From Microscopic Lesions to Clinical Complications and Outcomes. Med Clin North Am 2017; 101:43-52. [PMID: 27884234 DOI: 10.1016/j.mcna.2016.08.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The chronic hemodynamic load imposed by hypertension on the left ventricle leads to lesions in the myocardium that result in structural remodeling, which provides support for alterations in cardiac function, perfusion, and electrical activity that adversely influence the clinical evolution of hypertensive heart disease. Management must include detecting, reducing, and reversing left ventricular hypertrophy, as well as the detection and repair of microscopic lesions responsible for myocardial remodeling. Reducing the burden associated with hypertensive heart disease can be targeted using personalized treatment. The noninvasive, biomarker-mediated identification of subsets of patients with hypertensive heart disease is essential to provide personalized treatment.
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Affiliation(s)
- María U Moreno
- Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Edificio CIMA, Av. Pío XII, 55, Pamplona 31008, Spain; IdiSNA, Navarra Institute for Health Resarch, Pamplona, Spain
| | - Rocío Eiros
- Department of Cardiology and Cardiac Surgery, University Clinic, University of Navarra, Av. Pío XII, 36, Pamplona 31008, Spain
| | - Juan J Gavira
- Department of Cardiology and Cardiac Surgery, University Clinic, University of Navarra, Av. Pío XII, 36, Pamplona 31008, Spain; IdiSNA, Navarra Institute for Health Resarch, Pamplona, Spain
| | - Catalina Gallego
- Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Edificio CIMA, Av. Pío XII, 55, Pamplona 31008, Spain; Programa de Cardiología Clínica, Clínica CardioVID, Universidad Pontificia Bolivariana, Calle 78B 75-21, Medellín, Colombia
| | - Arantxa González
- Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Edificio CIMA, Av. Pío XII, 55, Pamplona 31008, Spain; IdiSNA, Navarra Institute for Health Resarch, Pamplona, Spain
| | - Susana Ravassa
- Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Edificio CIMA, Av. Pío XII, 55, Pamplona 31008, Spain; IdiSNA, Navarra Institute for Health Resarch, Pamplona, Spain
| | - Begoña López
- Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Edificio CIMA, Av. Pío XII, 55, Pamplona 31008, Spain; IdiSNA, Navarra Institute for Health Resarch, Pamplona, Spain
| | - Javier Beaumont
- Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Edificio CIMA, Av. Pío XII, 55, Pamplona 31008, Spain; IdiSNA, Navarra Institute for Health Resarch, Pamplona, Spain
| | - Gorka San José
- Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Edificio CIMA, Av. Pío XII, 55, Pamplona 31008, Spain; IdiSNA, Navarra Institute for Health Resarch, Pamplona, Spain
| | - Javier Díez
- Program of Cardiovascular Diseases, Center of Applied Medical Research, University of Navarra, Edificio CIMA, Av. Pío XII, 55, Pamplona 31008, Spain; Department of Cardiology and Cardiac Surgery, University Clinic, University of Navarra, Av. Pío XII, 36, Pamplona 31008, Spain; IdiSNA, Navarra Institute for Health Resarch, Pamplona, Spain.
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Circulating Exosomes in Cardiovascular Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 998:255-269. [PMID: 28936745 DOI: 10.1007/978-981-10-4397-0_17] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Circulating exosomes could arrive in distant tissues via blood circulation, thus directly communicating with target cells and rapidly regulating intracellular signalings. Circulating exosomes and exosomal cargos are critically involved in cardiovascular pathophysiology, such as cardiomyocyte hypertrophy, apoptosis, and angiogenesis. Circulating exosomes enriched with various types of biological molecules can be changed not only in the number but also in the composite cargos upon cardiac injury, such as myocardial infarction, myocardial ischemia reperfusion injury, atherosclerosis, hypertension, and sepsis cardiomyopathy, which may further influence cardiomyocyte function and contribute to the pathogenesis of cardiovascular diseases. Thus, exosome-based therapeutic strategy may be used to attenuate myocardial injury and promote cardiac regeneration and repair. Also, more preclinical and clinical studies would be needed to investigate the potential of circulating exosomes as biomarkers for the diagnosis, risk stratification, and prognosis of cardiovascular diseases.
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Zhou L, Ma B, Han X. The role of autophagy in angiotensin II-induced pathological cardiac hypertrophy. J Mol Endocrinol 2016; 57:R143-R152. [PMID: 27620875 DOI: 10.1530/jme-16-0086] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 09/12/2016] [Indexed: 12/18/2022]
Abstract
Pathological cardiac hypertrophy is associated with nearly all forms of heart failure. It develops in response to disorders such as coronary artery disease, hypertension and myocardial infarction. Angiotensin II (Ang II) has direct effects on the myocardium and promotes hypertension. Chronic elevation of Ang II can lead to pathological cardiac hypertrophy and cardiac failure. Autophagy is an important process in the pathogenesis of cardiovascular diseases. Under physiological conditions, autophagy is an essential homeostatic mechanism to maintain the global cardiac structure function by ridding damaged cells or unwanted macromolecules and organelles. Dysregulation of autophagy may play an important role in Ang II-induced cardiac hypertrophy although conflicting reports on the effects of Ang II on autophagy and cardiac hypertrophy exist. Some studies showed that autophagy activation attenuated Ang II-induced cardiac dysfunction. Others suggested that inhibition of the Ang II induced autophagy should be protective. The discrepancies may be due to different model systems and different signaling pathway involved. Ang II-induced cardiac hypertrophy may be alleviated through regulation of autophagy. This review focuses on Ang II to highlight the molecular targets and pathways identified in the prevention and treatment of Ang II-induced pathological cardiac hypertrophy by regulating autophagy.
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Affiliation(s)
- Lichun Zhou
- Department of PharmacologySchool of Pharmaceutical Sciences, Shandong University, Jinan, Shandong Province, China
| | - Baohua Ma
- Pharmaceutical Preparation SectionCentral Hospital of Qingdao, Qingdao, Shandong Province, China
| | - Xiuzhen Han
- Department of PharmacologySchool of Pharmaceutical Sciences, Shandong University, Jinan, Shandong Province, China
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Wang HJ, Chen SF, Lo WY. Identification of Cofilin-1 Induces G0/G1 Arrest and Autophagy in Angiotensin-(1-7)-treated Human Aortic Endothelial Cells from iTRAQ Quantitative Proteomics. Sci Rep 2016; 6:35372. [PMID: 27748441 PMCID: PMC5066316 DOI: 10.1038/srep35372] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 08/08/2016] [Indexed: 01/07/2023] Open
Abstract
The angiotensin-converting enzyme 2/angiotensin-(1-7)/Mas axis is a pathway that acts against the detrimental effects of the renin-angiotensin system. However, the effects of angiotensin-(1-7) on endothelial protein expression and the related phenotypes are unclear. We performed a duplicate of iTRAQ quantitative proteomic analysis on human aortic endothelial cells (HAECs) treated with angiotensin-(1-7) for 6 hours. Cofilin-1 was identified as a highly abundant candidate with consistent >30% coverage and >1.2-fold overexpression in the angiotensin-(1-7)-treated group. Gene ontology analysis showed that the "regulation_of_mitosis" was significantly altered, and cell cycle analysis indicated that the 6-hour angiotensin-(1-7) treatment significantly induced G0/G1 arrest. Knockdown of the cofilin-1 (CFL1) gene suggested the G0/G1 phase arrest was mediated by the modulation of p27 and the p21/Cyclin/CDK complex by Cofilin-1. Interestingly, quiescent HAECs escaped G0/G1 arrest upon angiotensin-(1-7) treatment for 24 hours, and angiotensin-(1-7) induced autophagy by upregulating Beclin-1 and microtubule-associated protein 1 light chain 3b-II expression, which was also attenuated by A779 pre-treatment and CFL1 knockdown. After pre-treatment with 3-methyladenine (3MA), treatment with angiotensin-(1-7) for 24 h induced significant G0/G1 phase arrest and apoptosis, suggesting a pro-survival role of autophagy in this context. In conclusion, Cofilin-1 plays a dominant role in angiotensin-(1-7)-induced G0/G1 arrest and autophagy to maintain cellular homeostasis in HAECs.
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Affiliation(s)
- Huang-Joe Wang
- School of Medicine, China Medical University, No. 91, Hsueh-Shih Road, Taichung, Taiwan 40402, R.O.C.,Division of Cardiovascular Medicine, Department of Medicine, China Medical University Hospital, No. 2, Yude Road, Taichung Taiwan 40447, R.O.C.,Cardiovascular Research Laboratory, China Medical University Hospital, No. 2, Yude Road, Taichung Taiwan 40447, R.O.C
| | - Sung-Fang Chen
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Chow Rd, Taipei, Taiwan 11677, R.O.C
| | - Wan-Yu Lo
- Cardiovascular &Translational Medicine Laboratory, Department of Biotechnology, Hung Kuang University, No. 1018, Sec. 6, Taiwan Boulevard, Shalu District, Taichung Taiwan 43302, R.O.C
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Wang Y, Zhao ZM, Zhang GX, Yang F, Yan Y, Liu SX, Li SH, Wang GK, Xu ZY. Dynamic autophagic activity affected the development of thoracic aortic dissection by regulating functional properties of smooth muscle cells. Biochem Biophys Res Commun 2016; 479:358-364. [DOI: 10.1016/j.bbrc.2016.09.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Accepted: 09/15/2016] [Indexed: 10/21/2022]
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Zhao L, Cui L, Jiang X, Zhang J, Zhu M, Jia J, Zhang Q, Zhang J, Zhang D, Huang Y. Extracellular pH regulates autophagy via the AMPK-ULK1 pathway in rat cardiomyocytes. FEBS Lett 2016; 590:3202-12. [PMID: 27531309 DOI: 10.1002/1873-3468.12359] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/02/2016] [Accepted: 08/10/2016] [Indexed: 12/20/2022]
Abstract
Various pathological conditions contribute to pH fluctuations and affect the functions of vital organs such as the heart. In this study, we show that in rat cardiomyocytes, acidic extracellular pH (pHe) inhibits autophagy, whereas alkaline pHe stimulates it. We also find that adenosine monophosphate-activated protein kinase (AMPK), mammalian target of rapamycin (mTOR) and Unc-51-like kinase 1 (ULK1) are very sensitive to pHe changes. Furthermore, by interfering with AMPK, mTOR or ULK1 activity, we demonstrate that the AMPK-ULK1 pathway, but not the mTOR pathway, plays a crucial role on pHe-regulated autophagy and cardiomyocyte viability. These data provide a potential therapeutic strategy against cardiomyocyte injury triggered by pH fluctuations.
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Affiliation(s)
- Liping Zhao
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Lin Cui
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Xupin Jiang
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Junhui Zhang
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Minghua Zhu
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Jiezhi Jia
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Qiong Zhang
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Jiaping Zhang
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Dongxia Zhang
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China.
| | - Yuesheng Huang
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China.
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Li T, Sun Y, Liang Y, Liu Q, Shi Y, Zhang CS, Zhang C, Song L, Zhang P, Zhang X, Li X, Chen T, Huang HY, He X, Wang Y, Wu YQ, Chen S, Jiang M, Chen C, Xie C, Yang J, Lin Y, Zhao S, Ye Z, Lin SY, Chiu DY, Lin SC. ULK1/2 Constitute a Bifurcate Node Controlling Glucose Metabolic Fluxes in Addition to Autophagy. Mol Cell 2016; 62:359-370. [DOI: 10.1016/j.molcel.2016.04.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 03/09/2016] [Accepted: 04/05/2016] [Indexed: 01/22/2023]
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Combination Treatment With Antihypertensive Agents Enhances the Effect of Qiliqiangxin on Chronic Pressure Overload-induced Cardiac Hypertrophy and Remodeling in Male Mice. J Cardiovasc Pharmacol 2016; 65:628-39. [PMID: 25806688 PMCID: PMC4461387 DOI: 10.1097/fjc.0000000000000230] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Supplemental Digital Content is Available in the Text. We previously showed that Qiliqiangxin (QL) capsules could ameliorate cardiac hypertrophy and remodeling in a mouse model of pressure overload. Here, we compared the effects of QL alone with those of QL combined with the following 3 types of antihypertensive drugs on cardiac remodeling and dysfunction induced by pressure overload for 4 weeks in mice: an angiotensin II type 1 receptor (AT1-R) blocker (ARB), an angiotensin-converting enzyme inhibitor (ACEI), and a β-adrenergic receptor (β-AR) blocker (BB). Adult male mice (C57B/L6) were subjected to either transverse aortic constriction or sham operation for 4 weeks, and the drugs (or saline) were orally administered through gastric tubes. Cardiac function and remodeling were evaluated through echocardiography, catheterization, histology, and analysis of hypertrophic gene expression. Cardiomyocyte apoptosis and autophagy, AT1-R and β1-AR expression, and cell proliferation–related molecules were also examined. Although pressure overload–induced cardiac remodeling and dysfunction, hypertrophic gene reprogramming, AT1-R and β1-AR expression, and ERK phosphorylation were significantly attenuated by QL alone, QL + ARB, QL + ACEI, and QL + BB, the attenuation was stronger in the combination treatment groups. Moreover, apoptosis was reduced to a larger extent by each combination treatment than by QL alone, whereas autophagy was more strongly attenuated by either QL + ARB or QL + ACEI. None of the treatments significantly upregulated ErbB2 or ErbB4 phosphorylation, and none significantly downregulated C/EBPβ expression. Therefore, the effects of QL on chronic pressure overload–induced cardiac remodeling may be significantly increased when QL is combined with an ARB, an ACEI, or a BB.
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Zhang X, Gibson ME, Li ZL, Zhu XY, Jordan KL, Lerman A, Lerman LO. Autophagy Portends the Level of Cardiac Hypertrophy in Experimental Hypertensive Swine Model. Am J Hypertens 2016; 29:81-9. [PMID: 25904651 DOI: 10.1093/ajh/hpv057] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 03/27/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Left ventricular (LV) hypertrophy (LVH) plays an important role in hypertensive heart disease, and may be accompanied by myocardial autophagy. However, the pattern of autophagy during evolution of LVH is unclear. We hypothesized that autophagy activation indicates advancing cardiac LVH with tissue remodeling. METHODS Ten domestic pigs with a 10-week unilateral renovascular hypertension (HTN) were classified as mild or moderate HTN (n = 5 each group) based on the degree of renal artery stenosis (above or below 75%). Seven normal pigs served as controls. Left ventricular remodeling, function, and microvascular density were assessed using multi-detector- and micro-computed tomography and histology. Markers of myocardial autophagic and endoplasmic reticulum (ER) stress-related unfolded protein response (UPR), apoptosis, and fibrosis were examined ex vivo. RESULTS Both HTN groups had increased myocyte cross-sectional area, but it was greater in moderate HTN, accompanied by elevated LV muscle-mass. Moderate, but not mild HTN, also showed impaired microvascular density and impaired myocardial perfusion. Autophagy mediators were unaltered in mild HTN but UPR markers were increased, while in moderate HTN they were all upregulated, whereas UPR markers were suppressed. Myocardial apoptosis and fibrosis were also greater in moderate HTN. Autophagic proteins were correlated with LVH and fibrosis. CONCLUSIONS Autophagic activity is stimulated during the exacerbation of LVH, following a transient early increase in ER stress, and may be involved in the progression of cardiac remodeling in renovascular hypertensive heart disease.
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Affiliation(s)
- Xin Zhang
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Matthew E Gibson
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Zi-Lun Li
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA; Division of Vascular Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiang-Yang Zhu
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Kyra L Jordan
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Amir Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Lilach O Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA; Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA.
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Wang XY, Fan XS, Cai L, Liu S, Cong XF, Chen X. Lysophosphatidic acid rescues bone mesenchymal stem cells from hydrogen peroxide-induced apoptosis. Apoptosis 2015; 20:273-84. [PMID: 25633408 DOI: 10.1007/s10495-014-1074-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The increase of reactive oxygen species in infracted heart significantly reduces the survival of donor mesenchymal stem cells, thereby attenuating the therapeutic efficacy for myocardial infarction. In our previous study, we demonstrated that lysophosphatidic acid (LPA) protects bone marrow-derived mesenchymal stem cells (BMSCs) against hypoxia and serum deprivation-induced apoptosis. However, whether LPA protects BMSCs from H2O2-induced apoptosis was not examined. In this study, we report that H2O2 induces rat BMSC apoptosis whereas LPA pre-treatment effectively protects BMSCs from H2O2-induced apoptosis. LPA protection of BMSC from the induced apoptosis is mediated mostly through LPA3 receptor. Furthermore, we found that membrane G protein Gi2 and Gi3 are involved in LPA-elicited anti-apoptotic effects through activation of ERK1/2- and PI3 K-pathways. Additionally, H2O2 increases levels of type II of light chain 3B (LC3B II), an autophagy marker, and H2O2-induced autophagy thus protected BMSCs from apoptosis. LPA further increases the expression of LC3B II in the presence of H2O2. In contrast, autophagy flux inhibitor bafilomycin A1 has no effect on LPA's protection of BMSC from H2O2-induced apoptosis. Taken together, our data suggest that LPA rescues H2O2-induced apoptosis mainly by interacting with Gi-coupled LPA3, resulting activation of the ERK1/2- and PI3 K/AKT-pathways and inhibition caspase-3 cleavage, and LPA protection of BMSCs against the apoptosis is independent of it induced autophagy.
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Affiliation(s)
- Xian-Yun Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
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Lin L, Liu X, Xu J, Weng L, Ren J, Ge J, Zou Y. Mas receptor mediates cardioprotection of angiotensin-(1-7) against Angiotensin II-induced cardiomyocyte autophagy and cardiac remodelling through inhibition of oxidative stress. J Cell Mol Med 2015; 20:48-57. [PMID: 26515045 PMCID: PMC4717848 DOI: 10.1111/jcmm.12687] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 08/14/2015] [Indexed: 12/20/2022] Open
Abstract
Angiotensin II (Ang II) plays an important role in the onset and development of cardiac remodelling associated with changes of autophagy. Angiotensin1-7 [Ang-(1-7)] is a newly established bioactive peptide of renin-angiotensin system, which has been shown to counteract the deleterious effects of Ang II. However, the precise impact of Ang-(1-7) on Ang II-induced cardiomyocyte autophagy remained essentially elusive. The aim of the present study was to examine if Ang-(1-7) inhibits Ang II-induced autophagy and the underlying mechanism involved. Cultured neonatal rat cardiomyocytes were exposed to Ang II for 48 hrs while mice were infused with Ang II for 4 weeks to induce models of cardiac hypertrophy in vitro and in vivo. LC3b-II and p62, markers of autophagy, expression were significantly elevated in cardiomyocytes, suggesting the presence of autophagy accompanying cardiac hypertrophy in response to Ang II treatment. Besides, Ang II induced oxidative stress, manifesting as an increase in malondialdehyde production and a decrease in superoxide dismutase activity. Ang-(1-7) significantly retarded hypertrophy, autophagy and oxidative stress in the heart. Furthermore, a role of Mas receptor in Ang-(1-7)-mediated action was assessed using A779 peptide, a selective Mas receptor antagonist. The beneficial responses of Ang-(1-7) on cardiac remodelling, autophagy and oxidative stress were mitigated by A779. Taken together, these result indicated that Mas receptor mediates cardioprotection of angiotensin-(1-7) against Ang II-induced cardiomyocyte autophagy and cardiac remodelling through inhibition of oxidative stress.
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Affiliation(s)
- Li Lin
- Department of Cardiovascular Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xuebo Liu
- Department of Cardiovascular Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jianfeng Xu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai, China
| | - Liqing Weng
- Department of Cardiovascular Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jun Ren
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai, China
| | - Junbo Ge
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai, China
| | - Yunzeng Zou
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai, China
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Pushparaj C, Das A, Purroy R, Nàger M, Herreros J, Pamplona R, Cantí C. Voltage-gated calcium channel blockers deregulate macroautophagy in cardiomyocytes. Int J Biochem Cell Biol 2015; 68:166-75. [PMID: 26429067 DOI: 10.1016/j.biocel.2015.09.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 09/04/2015] [Accepted: 09/26/2015] [Indexed: 10/23/2022]
Abstract
Voltage-gated calcium channel blockers are widely used for the management of cardiovascular diseases, however little is known about their effects on cardiac cells in vitro. We challenged neonatal ventricular cardiomyocytes (CMs) with therapeutic L-type and T-type Ca(2+) channel blockers (nifedipine and mibefradil, respectively), and measured their effects on cell stress and survival, using fluorescent microscopy, Q-PCR and Western blot. Both nifedipine and mibefradil induced a low-level and partially transient up-regulation of three key mediators of the Unfolded Protein Response (UPR), indicative of endoplasmic (ER) reticulum stress. Furthermore, nifedipine triggered the activation of macroautophagy, as evidenced by increased lipidation of microtubule-associated protein 1 light chain 3 (LC3), decreased levels of polyubiquitin-binding protein p62/SQSTM1 and ubiquitinated protein aggregates, that was followed by cell death. In contrast, mibefradil inhibited CMs constitutive macroautophagy and did not promote cell death. The siRNA-mediated gene silencing approach confirmed the pharmacological findings for T-type channels. We conclude that L-type and T-type Ca(2+) channel blockers induce ER stress, which is divergently transduced into macroautophagy induction and inhibition, respectively, with relevance for cell viability. Our work identifies VGCCs as novel regulators of autophagy in the heart muscle and provides new insights into the effects of VGCC blockers on CMs homeostasis, that may underlie both noxious and cardioprotective effects.
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Affiliation(s)
- Charumathi Pushparaj
- Universitat de Lleida, Institut de Recerca Biomèdica de Lleida (IRBLleida), Spain
| | - Arindam Das
- Universitat de Lleida, Institut de Recerca Biomèdica de Lleida (IRBLleida), Spain
| | - Rosa Purroy
- Universitat de Lleida, Institut de Recerca Biomèdica de Lleida (IRBLleida), Spain
| | - Mireia Nàger
- Universitat de Lleida, Institut de Recerca Biomèdica de Lleida (IRBLleida), Spain
| | - Judit Herreros
- Universitat de Lleida, Institut de Recerca Biomèdica de Lleida (IRBLleida), Spain
| | - Reinald Pamplona
- Universitat de Lleida, Institut de Recerca Biomèdica de Lleida (IRBLleida), Spain
| | - Carles Cantí
- Universitat de Lleida, Institut de Recerca Biomèdica de Lleida (IRBLleida), Spain.
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Cardiac-specific overexpression of metallothionein attenuates myocardial remodeling and contractile dysfunction in l-NAME-induced experimental hypertension: Role of autophagy regulation. Toxicol Lett 2015; 237:121-32. [DOI: 10.1016/j.toxlet.2015.06.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/05/2015] [Accepted: 06/05/2015] [Indexed: 12/20/2022]
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Wang W, Wang H, Geng QX, Wang HT, Miao W, Cheng B, Zhao D, Song GM, Leanne G, Zhao Z. Augmentation of autophagy by atorvastatin via Akt/mTOR pathway in spontaneously hypertensive rats. Hypertens Res 2015. [PMID: 26224487 DOI: 10.1038/hr.2015.85] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Autophagy is activated in hypertension-induced cardiac hypertrophy. However, the mechanisms and significance of an activated autophagy are not clear. This study was designed to determine the role of atorvastatin (ATO) in cardiac autophagy and associated benefits on cardiac remodeling and left ventricular function in spontaneously hypertensive rats (SHRs). Twenty-eight male SHRs at 8 weeks of age were randomized to treatment with vehicle (saline solution; SHR+V) or ATO (SHR+ATO; 50 mg kg(-1) per day) for 6 or 12 months. Age-matched male Wistar-Kyoto (WKY) rats were used as normotensive controls. Cardiac magnetic resonance was used to evaluate cardiac function and structure. Compared with WKY rats, SHRs showed significant left ventricle (LV) dysfunction, remodeling and increases in cardiomyocyte size, which were all attenuated by 6 and 12 months of ATO treatment. Compared with WKY rats, autophagy was activated in the hearts of SHRs and this effect was amplified by chronic ATO treatment, particularly following 12 months of treatment. Protein expression levels of microtubule-associated protein-1 light chain 3-II and beclin-1, the biomarkers of an activated cardiac autophagy, were significantly elevated in ATO-treated versus vehicle-treated SHRs and control WKY rats. Cardiac Akt and phosphorylated mammalian target of rapamycin (mTOR) expression were also increased in the hearts of SHR versus WKY rats, and this effect was attenuated by ATO treatment. These findings suggest that ATO-mediated improvements in LV function and structure in SHRs may be, in part, through its regulation of cardiac autophagy via the Akt/mTOR pathway.
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Affiliation(s)
- Wei Wang
- Department of Cardiovascular Surgery, Shandong University Qilu Hospital, Shandong, China.,Department of Cardiology, Shandong Provincial Chest Hospital, Shandong, China
| | - Hao Wang
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Qing-Xin Geng
- Department of Cardiology, Jinan Central Hospital, Affiliated with Shandong University, Shandong, China
| | - Hua-Ting Wang
- Department of Cardiology, Jinan Central Hospital, Affiliated with Shandong University, Shandong, China
| | - Wei Miao
- Department of Cardiology, Jinan Central Hospital, Affiliated with Shandong University, Shandong, China
| | - Bo Cheng
- Department of Cardiology, Shandong Provincial Chest Hospital, Shandong, China
| | - Di Zhao
- Shandong University of Traditional Chinese Medicine, Shandong, China
| | - Guang-Min Song
- Department of Cardiovascular Surgery, Shandong University Qilu Hospital, Shandong, China
| | - Groban Leanne
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Zhuo Zhao
- Department of Cardiology, Jinan Central Hospital, Affiliated with Shandong University, Shandong, China
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Ren J, Taegtmeyer H. Too much or not enough of a good thing — The Janus faces of autophagy in cardiac fuel and protein homeostasis. J Mol Cell Cardiol 2015; 84:223-6. [DOI: 10.1016/j.yjmcc.2015.03.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 02/23/2015] [Accepted: 03/02/2015] [Indexed: 01/01/2023]
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Lin L, Liu X, Xu J, Weng L, Ren J, Ge J, Zou Y. High-density lipoprotein inhibits mechanical stress-induced cardiomyocyte autophagy and cardiac hypertrophy through angiotensin II type 1 receptor-mediated PI3K/Akt pathway. J Cell Mol Med 2015; 19:1929-38. [PMID: 25946687 PMCID: PMC4549043 DOI: 10.1111/jcmm.12567] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 01/29/2015] [Indexed: 12/24/2022] Open
Abstract
Mechanical stress triggers cardiac hypertrophy and autophagy through an angiotensin II (Ang II) type 1 (AT1) receptor-dependent mechanism. Low level of high density lipoprotein (HDL) is an independent risk factor for cardiac hypertrophy. This study was designed to evaluate the effect of HDL on mechanical stress-induced cardiac hypertrophy and autophagy. A 48-hr mechanical stretch and a 4-week transverse aortic constriction were employed to induce cardiomyocyte hypertrophy in vitro and in vivo, respectively, prior to the assessment of myocardial autophagy using LC3b-II and beclin-1. Our results indicated that HDL significantly reduced mechanical stretch-induced rise in autophagy as demonstrated by LC3b-II and beclin-1. In addition, mechanical stress up-regulated AT1 receptor expression in both cultured cardiomyocytes and in mouse hearts, whereas HDL significantly suppressed the AT1 receptor. Furthermore, the role of Akt phosphorylation in HDL-mediated action was assessed using MK-2206, a selective inhibitor for Akt phosphorylation. Our data further revealed that MK-2206 mitigated HDL-induced beneficial responses on cardiac remodelling and autophagy. Taken together, our data revealed that HDL inhibited mechanical stress-induced cardiac hypertrophy and autophagy through downregulation of AT1 receptor, and HDL ameliorated cardiac hypertrophy and autophagy via Akt-dependent mechanism.
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Affiliation(s)
- Li Lin
- Department of Cardiovascular Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xuebo Liu
- Department of Cardiovascular Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jianfeng Xu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai, China
| | - Liqing Weng
- Department of Cardiovascular Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jun Ren
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai, China
| | - Junbo Ge
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai, China
| | - Yunzeng Zou
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai, China
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