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Guo Z. The role of glucagon-like peptide-1/GLP-1R and autophagy in diabetic cardiovascular disease. Pharmacol Rep 2024; 76:754-779. [PMID: 38890260 DOI: 10.1007/s43440-024-00609-1] [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: 11/30/2023] [Revised: 05/25/2024] [Accepted: 06/03/2024] [Indexed: 06/20/2024]
Abstract
Diabetes leads to a significantly accelerated incidence of various related macrovascular complications, including peripheral vascular disease and cardiovascular disease (the most common cause of mortality in diabetes), as well as microvascular complications such as kidney disease and retinopathy. Endothelial dysfunction is the main pathogenic event of diabetes-related vascular disease at the earliest stage of vascular injury. Understanding the molecular processes involved in the development of diabetes and its debilitating vascular complications might bring up more effective and specific clinical therapies. Long-acting glucagon-like peptide (GLP)-1 analogs are currently available in treating diabetes with widely established safety and extensively evaluated efficacy. In recent years, autophagy, as a critical lysosome-dependent self-degradative process to maintain homeostasis, has been shown to be involved in the vascular endothelium damage in diabetes. In this review, the GLP-1/GLP-1R system implicated in diabetic endothelial dysfunction and related autophagy mechanism underlying the pathogenesis of diabetic vascular complications are briefly presented. This review also highlights a possible crosstalk between autophagy and the GLP-1/GLP-1R axis in the treatment of diabetic angiopathy.
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Affiliation(s)
- Zi Guo
- Section of Nephrology, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, 06510, USA.
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2
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Singh B, Cui K, Eisa-Beygi S, Zhu B, Cowan DB, Shi J, Wang DZ, Liu Z, Bischoff J, Chen H. Elucidating the crosstalk between endothelial-to-mesenchymal transition (EndoMT) and endothelial autophagy in the pathogenesis of atherosclerosis. Vascul Pharmacol 2024; 155:107368. [PMID: 38548093 DOI: 10.1016/j.vph.2024.107368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/07/2024] [Accepted: 03/25/2024] [Indexed: 04/26/2024]
Abstract
Atherosclerosis, a chronic systemic inflammatory condition, is implicated in most cardiovascular ischemic events. The pathophysiology of atherosclerosis involves various cell types and associated processes, including endothelial cell activation, monocyte recruitment, smooth muscle cell migration, involvement of macrophages and foam cells, and instability of the extracellular matrix. The process of endothelial-to-mesenchymal transition (EndoMT) has recently emerged as a pivotal process in mediating vascular inflammation associated with atherosclerosis. This transition occurs gradually, with a significant portion of endothelial cells adopting an intermediate state, characterized by a partial loss of endothelial-specific gene expression and the acquisition of "mesenchymal" traits. Consequently, this shift disrupts endothelial cell junctions, increases vascular permeability, and exacerbates inflammation, creating a self-perpetuating cycle that drives atherosclerotic progression. While endothelial cell dysfunction initiates the development of atherosclerosis, autophagy, a cellular catabolic process designed to safeguard cells by recycling intracellular molecules, is believed to exert a significant role in plaque development. Identifying the pathological mechanisms and molecular mediators of EndoMT underpinning endothelial autophagy, may be of clinical relevance. Here, we offer new insights into the underlying biology of atherosclerosis and present potential molecular mechanisms of atherosclerotic resistance and highlight potential therapeutic targets.
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Affiliation(s)
- Bandana Singh
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, USA
| | - Kui Cui
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, USA
| | - Shahram Eisa-Beygi
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, USA
| | - Bo Zhu
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, USA
| | - Douglas B Cowan
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, USA
| | - Jinjun Shi
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Da-Zhi Wang
- Center for Regenerative Medicine, University of South Florida Health Heart Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Zhenguo Liu
- Division of Cardiovascular Medicine, Department of Medicine, University of Missouri School of Medicine, Columbia, MO, USA
| | - Joyce Bischoff
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, USA
| | - Hong Chen
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, USA.
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3
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Sharma H, Mossman K, Austin RC. Fatal attractions that trigger inflammation and drive atherosclerotic disease. Eur J Clin Invest 2024; 54:e14169. [PMID: 38287209 DOI: 10.1111/eci.14169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/14/2023] [Accepted: 01/09/2024] [Indexed: 01/31/2024]
Abstract
BACKGROUND Atherosclerosis is the salient, underlying cause of cardiovascular diseases, such as arrhythmia, coronary artery disease, cardiomyopathy, pulmonary embolism and myocardial infarction. In recent years, atherosclerosis pathophysiology has evolved from a lipid-based to an inflammation-centric ideology. METHODS This narrative review is comprised of review and original articles that were found through the PubMed search engine. The following search terms or amalgamation of terms were used: "cardiovascular disease," "atherosclerosis," "inflammation," "GRP78," "Hsp60," "oxidative low-density lipoproteins," "aldehyde dehydrogenase," "β2-glycoprotein," "lipoprotein lipase A," "human cytomegalovirus." "SARS-CoV-2," "chlamydia pneumonia," "autophagy," "thrombosis" and "therapeutics." RESULTS Emerging evidence supports the concept that atherosclerosis is associated with the interaction between cell surface expression of stress response chaperones, including GRP78 and Hsp60, and their respective autoantibodies. Moreover, various other autoantigens and their autoantibodies have displayed a compelling connection with the development of atherosclerosis, including oxidative low-density lipoproteins, aldehyde dehydrogenase, β2-glycoprotein and lipoprotein lipase A. Atherosclerosis progression is also concurrent with viral and bacterial activators of various diseases. This narrative review will focus on the contributions of human cytomegalovirus as well as SARS-CoV-2 and chlamydia pneumonia in atherosclerosis development. Notably, the interaction of an autoantigen with their respective autoantibodies or the presence of a foreign antigen can enhance inflammation development, which leads to atherosclerotic lesion progression. CONCLUSION We will highlight and discuss the complex role of the interaction between autoantigens and autoantibodies, and the presence of foreign antigens in the development of atherosclerotic lesions in relationship to pro-inflammatory responses.
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Affiliation(s)
- Hitesh Sharma
- Division of Nephrology, Department of Medicine, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, Hamilton, Ontario, Canada
| | - Karen Mossman
- Department of Medicine, Michael DeGroote Institute for Infectious Disease Research and the McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Richard C Austin
- Division of Nephrology, Department of Medicine, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, Hamilton, Ontario, Canada
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Yang N, Yu G, Lai Y, Zhao J, Chen Z, Chen L, Fu Y, Fang P, Gao W, Cai Y, Li Z, Xiao J, Zhou K, Ding J. A snake cathelicidin enhances transcription factor EB-mediated autophagy and alleviates ROS-induced pyroptosis after ischaemia-reperfusion injury of island skin flaps. Br J Pharmacol 2024; 181:1068-1090. [PMID: 37850255 DOI: 10.1111/bph.16268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 09/17/2023] [Accepted: 10/03/2023] [Indexed: 10/19/2023] Open
Abstract
BACKGROUND AND PURPOSE Ischaemia-reperfusion (I/R) injury is a major contributor to skin flap necrosis, which presents a challenge in achieving satisfactory therapeutic outcomes. Previous studies showed that cathelicidin-BF (BF-30) protects tissues from I/R injury. In this investigation, BF-30 was synthesized and its role and mechanism in promoting survival of I/R-injured skin flaps explored. EXPERIMENTAL APPROACH Survival rate analysis and laser Doppler blood flow analysis were used to evaluate I/R-injured flap viability. Western blotting, immunofluorescence, TdT-mediated dUTP nick end labelling (TUNEL) and dihydroethidium were utilized to examine the levels of apoptosis, pyroptosis, oxidative stress, transcription factor EB (TFEB)-mediated autophagy and molecules related to the adenosine 5'-monophosphate-activated protein kinase (AMPK)-transient receptor potential mucolipin 1 (TRPML1)-calcineurin signalling pathway. KEY RESULTS The outcomes revealed that BF-30 enhanced I/R-injured island skin flap viability. Autophagy, oxidative stress, pyroptosis and apoptosis were related to the BF-30 capability to enhance I/R-injured flap survival. Improved autophagy flux and tolerance to oxidative stress promoted the inhibition of apoptosis and pyroptosis in vascular endothelial cells. Activation of TFEB increased autophagy and inhibited endothelial cell oxidative stress in I/R-injured flaps. A reduction in TFEB level led to a loss of the protective effect of BF-30, by reducing autophagy flux and increasing the accumulation of reactive oxygen species (ROS) in endothelial cells. Additionally, BF-30 modulated TFEB activity via the AMPK-TRPML1-calcineurin signalling pathway. CONCLUSION AND IMPLICATIONS BF-30 promotes I/R-injured skin flap survival by TFEB-mediated up-regulation of autophagy and inhibition of oxidative stress, which may have possible clinical applications.
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Affiliation(s)
- Ningning Yang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Gaoxiang Yu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yingying Lai
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Jiayi Zhao
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Zhuliu Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Liang Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yuedong Fu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Pin Fang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Weiyang Gao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yuepiao Cai
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Zhijie Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Jian Xiao
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Jian Ding
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
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5
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Pang X, Qiu W, Zhang X, Huang J, Zhou S, Wang R, Tang Z, Su R. Asiatic Acid Alleviates Lipopolysaccharide-Induced Acute Myocardial Injury by Promoting Mitophagy and Regulating Mitochondrial Dynamics in Broilers. Avian Dis 2024; 68:25-32. [PMID: 38687104 DOI: 10.1637/aviandiseases-d-23-00036] [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: 05/07/2023] [Accepted: 01/04/2024] [Indexed: 05/02/2024]
Abstract
Acute myocardial injury (AMI) induced by lipopolysaccharide (LPS) can cause cardiovascular dysfunction and lead to death in poultry. Traditional antibiotic therapy has been found to have many limitations and negative effects. Asiatic acid (AA) is a naturally occurring pentacyclic triterpenoid that is extracted from Centella asiatica and has anti-inflammatory, antioxidant, and anticancer pharmacological properties. Previously, we studied the effect of AA on LPS-induced liver and kidney injury; however, the impact of AA on LPS-induced AMI remained unclear. Sixty 1-day-old broilers were randomly divided into control group, LPS group, LPS + AA 15 mg/kg group, LPS + AA 30 mg/kg group, LPS + AA 60 mg/kg group, and control + AA 60 mg/kg group. The histopathology of cardiac tissues was detected by hematoxylin and eosin (H&E) staining. The mRNA and protein expressions related to mitochondrial dynamics and mitophagy were detected by quantitative real-time PCR, western blot, immunofluorescence, and immunohistochemistry. Disorganized myocardial cells and fractured myocardial fibers were found in the LPS group, and obvious red-blood-cell filling can be seen in the gaps between the myocardial fibers in the low-dose AA group. Nevertheless, the medium and high dose of AA obviously attenuated these changes. Our results showed that AA significantly restored the mRNA and protein expressions related to mitochondrial dynamic through further promoting mitophagy. This study revealed the effect of AA on LPS-induced AMI in broilers. Mechanically, AA regulated mitochondrial dynamic homeostasis and further promoted mitophagy. These novel findings indicate that AA may be a potential drug for LPS-induced AMI in broilers.
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Affiliation(s)
- Xiaoyue Pang
- College of Veterinary Medicine, South China of Agricultural University, Guangzhou, People's Republic of China
| | - Wenyue Qiu
- College of Veterinary Medicine, South China of Agricultural University, Guangzhou, People's Republic of China
| | - Xinting Zhang
- College of Veterinary Medicine, South China of Agricultural University, Guangzhou, People's Republic of China
| | - Jianjia Huang
- College of Veterinary Medicine, South China of Agricultural University, Guangzhou, People's Republic of China
| | - Shuilian Zhou
- College of Veterinary Medicine, South China of Agricultural University, Guangzhou, People's Republic of China
| | - Rongmei Wang
- Yingdong College of Biology and Agriculture, Shaoguan University, Shaoguan, People's Republic of China
| | - Zhaoxin Tang
- College of Veterinary Medicine, South China of Agricultural University, Guangzhou, People's Republic of China
| | - Rongsheng Su
- College of Veterinary Medicine, South China of Agricultural University, Guangzhou, People's Republic of China,
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6
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Wu K, Wang Y, Liu R, Wang H, Rui T. The role of mammalian Sirtuin 6 in cardiovascular diseases and diabetes mellitus. Front Physiol 2023; 14:1207133. [PMID: 37497437 PMCID: PMC10366693 DOI: 10.3389/fphys.2023.1207133] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/03/2023] [Indexed: 07/28/2023] Open
Abstract
Cardiovascular diseases are severe diseases posing threat to human health because of their high morbidity and mortality worldwide. The incidence of diabetes mellitus is also increasing rapidly. Various signaling molecules are involved in the pathogenesis of cardiovascular diseases and diabetes. Sirtuin 6 (Sirt6), which is a class III histone deacetylase, has attracted numerous attentions since its discovery. Sirt6 enjoys a unique structure, important biological functions, and is involved in multiple cellular processes such as stress response, mitochondrial biogenesis, transcription, insulin resistance, inflammatory response, chromatin silencing, and apoptosis. Sirt6 also plays significant roles in regulating several cardiovascular diseases including atherosclerosis, coronary heart disease, as well as cardiac remodeling, bringing Sirt6 into the focus of clinical interests. In this review, we examine the recent advances in understanding the mechanistic working through which Sirt6 alters the course of lethal cardiovascular diseases and diabetes mellitus.
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7
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Joshi S, Kundu S, Priya VV, Kulhari U, Mugale MN, Sahu BD. Anti-inflammatory activity of carvacrol protects the heart from lipopolysaccharide-induced cardiac dysfunction by inhibiting pyroptosis via NLRP3/Caspase1/Gasdermin D signaling axis. Life Sci 2023; 324:121743. [PMID: 37120013 DOI: 10.1016/j.lfs.2023.121743] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 04/14/2023] [Accepted: 04/24/2023] [Indexed: 05/01/2023]
Abstract
AIMS Lipopolysaccharide (LPS) is a well-known agent to induce septic conditions. Sepsis-induced cardiomyopathy has an overwhelming death rate. Carvacrol (CVL), a monoterpene phenol, has anti-inflammatory and antioxidant properties. The research aimed to investigate the effect of CVL on LPS-induced dysfunction in the heart. In this study, we evaluated the effect of CVL in LPS-stimulated H9c2 cardiomyoblast cells and Balb/c mice. MAIN METHODS LPS was used to induce septic conditions in H9c2 cardiomyoblast cells in vitro and in Balb/C mice. A survival study was conducted to assess the survival rate of mice after LPS and/or CVL treatment. KEY FINDINGS In vitro studies indicated that CVL inhibits reactive oxygen species (ROS) generation and abates pyroptosis mediated by NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome in H9c2 cells. In mice, CVL intervention improved the survival rate in septic conditions. The CVL administration markedly improved the echocardiographic parameters and alleviated the LPS-induced reduction in the ejection fraction (%) and fraction shortening (%). The CVL intervention restored the myocardial antioxidants and histopathological alterations and decreased the pro-inflammatory cytokine contents in the heart. Further findings disclosed that CVL reduced the protein levels of NLRP3, apoptosis-associated speck-like protein (ASC), caspase 1, interleukin (IL)-18, IL-1β, and the pyroptosis-indicative protein, gasdermin-D (GSDMD) in the heart. The autophagy-indicative proteins, beclin 1, and p62, in the heart were also restored in the CVL-treated group. SIGNIFICANCE Altogether, our findings demonstrated that CVL has a beneficial effect and can be a potential molecule against sepsis-induced myocardial dysfunction.
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Affiliation(s)
- Shubhang Joshi
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Changsari, 781101, Assam, India
| | - Sourav Kundu
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Changsari, 781101, Assam, India
| | - Vikram Vamsi Priya
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Changsari, 781101, Assam, India
| | - Uttam Kulhari
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Changsari, 781101, Assam, India
| | - Madhav Nilakanth Mugale
- Toxicology & Experimental Medicine, CSIR- Central Drug Research Institute (CDRI), Lucknow 226 031, India
| | - Bidya Dhar Sahu
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Changsari, 781101, Assam, India.
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8
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Yue Q, Yang P, Ma X, Shu Z, Yang L, Wu Y, Tang Y, Luo X, Wu S, Li Y. The Mediating Role of Systemic Inflammation in the Effects of Fetal Famine Exposure on Cardiovascular Disease in Adults: A Cohort Study. J Nutr 2023; 153:1389-1397. [PMID: 36858258 DOI: 10.1016/j.tjnut.2023.02.031] [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: 10/13/2022] [Revised: 01/25/2023] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND A few studies have reported the association between famine exposure during fetal development and risk of CVD, but no mechanisms have been explored. OBJECTIVES The objective of this study was to examine risk of CVD in adulthood after exposure to famine during the fetal stage and explore the mediating role of systemic inflammation. METHODS A total of 59,416 participants of the Kailuan Study without CVD were included. All participants were divided into 3 groups based on date of birth, including the unexposed group (1963-1974), the fetal-exposed group (1959-1962), and the childhood-exposed group (1949-1958). Systemic immune-inflammation index (SII) (neutrophils × platelets / lymphocytes) and systemic inflammatory response index (SIRI) (neutrophils × monocytes / lymphocytes) are 2 novel systemic inflammation indexes that represent the level of systemic inflammation. Time-weighted Cox regression was used to test the effect of famine exposure on risk of CVD, and a mediation model was used to calculate the role of systemic inflammation. RESULTS During a median follow-up period of 12.36 (12.69, 13.16) y, a total of 3772 cases of CVD were documented. Compared with unexposed participants, the fetal-exposed group had an increased risk of CVD (HR: 1.19; 95% CI: 1.04, 1.38) and stroke (HR: 1.28; 95% CI: 1.09, 1.51) but not MI. No association was observed in the childhood-exposed group. In mediation analysis, SII mediated an estimated 24.43% of the association between fetal exposure and CVD (24.61% for stroke and 23.27% for MI). For SIRI, this percentage was 30.20% for CVD (29.94% for stroke and 31.25% of MI). CONCLUSIONS Fetal exposure to famine may increase risk of CVD in adulthood. Systemic inflammation may play an intermediary role in the effect of fetal famine exposure on CVD. J Nutr 2023;xx:xx-xx.
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Affiliation(s)
- Qing Yue
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Peng Yang
- Department of Neurosurgery, Affiliated Hospital of North China University of Science and Technology, Tangshan, China
| | - Xiaoxu Ma
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Zhe Shu
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Ling Yang
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Yuntao Wu
- Department of Cardiology, Kailuan General Hospital, Tangshan, China
| | - Yongmei Tang
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Xiaoyan Luo
- Department of Emergency, Kailuan General Hospital, Tangshan, China
| | - Shouling Wu
- Department of Cardiology, Kailuan General Hospital, Tangshan, China.
| | - Yun Li
- School of Public Health, North China University of Science and Technology, Tangshan, China.
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9
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Paudel RR, Lu D, Roy Chowdhury S, Monroy EY, Wang J. Targeted Protein Degradation via Lysosomes. Biochemistry 2023; 62:564-579. [PMID: 36130224 DOI: 10.1021/acs.biochem.2c00310] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In the scope of targeted protein degradation (TPD), proteolysis-targeting chimeras (PROTACs), leveraging the ubiquitin-proteasome system, have been extensively studied. However, they are limited to the degradation of soluble and membrane proteins, excluding the aggregated and extracellular proteins and dysfunctional organelles. As an alternative protein degradation pathway, lysosomes serve as a feasible tool for accessing these untouched proteins and/or organelles by proteosomes. Here, we focus on reviewing the emerging lysosome-mediated TPD, such as AUTAC, ATTEC, AUTOTAC, LYTAC, and MoDE-A. Intracellular targets, such as soluble and aggregated proteins and organelles, can be degraded via the autophagy-lysosome pathway. Extracellular targets, such as membrane proteins, and secreted extracellular proteins can be degraded via the endosome-lysosome pathway. In addition, we summarize the mechanism and regulation of autophagy, available methods and assays for monitoring the autophagy process, and the recently developed chemical probes for perturbing the autophagy pathways.
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Affiliation(s)
- Rishi R Paudel
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Dong Lu
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Sandipan Roy Chowdhury
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Erika Y Monroy
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Jin Wang
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas 77030, United States.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, United States
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10
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Reis-Mendes A, Carvalho F, Remião F, Sousa E, de Lourdes Bastos M, Costa VM. Autophagy (but not metabolism) is a key event in mitoxantrone-induced cytotoxicity in differentiated AC16 cardiac cells. Arch Toxicol 2023; 97:201-216. [PMID: 36216988 DOI: 10.1007/s00204-022-03363-6] [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: 06/21/2022] [Accepted: 08/11/2022] [Indexed: 01/19/2023]
Abstract
Mitoxantrone (MTX) is an antineoplastic agent used to treat advanced breast cancer, prostate cancer, acute leukemia, lymphoma and multiple sclerosis. Although it is known to cause cumulative dose-related cardiotoxicity, the underlying mechanisms are still poorly understood. This study aims to compare the cardiotoxicity of MTX and its' pharmacologically active metabolite naphthoquinoxaline (NAPHT) in an in vitro cardiac model, human-differentiated AC16 cells, and determine the role of metabolism in the cardiotoxic effects. Concentration-dependent cytotoxicity was observed after MTX exposure, affecting mitochondrial function and lysosome uptake. On the other hand, the metabolite NAPHT only caused concentration-dependent cytotoxicity in the MTT reduction assay. When assessing the effect of different inhibitors/inducers of metabolism, it was observed that metyrapone (a cytochrome P450 inhibitor) and phenobarbital (a cytochrome P450 inducer) slightly increased MTX cytotoxicity, while 1-aminobenzotriazole (a suicide cytochrome P450 inhibitor) decreased fairly the MTX-triggered cytotoxicity in differentiated AC16 cells. When focusing in autophagy, the mTOR inhibitor rapamycin and the autophagy inhibitor 3-methyladenine exacerbated the cytotoxicity caused by MTX and NAPHT, while the autophagy blocker, chloroquine, partially reduced the cytotoxicity of MTX. In addition, we observed a decrease in p62, beclin-1, and ATG5 levels and an increase in LC3-II levels in MTX-incubated cells. In conclusion, in our in vitro model, neither metabolism nor exogenously given NAPHT are major contributors to MTX toxicity as seen by the residual influence of metabolism modulators used on the observed cytotoxicity and by NAPHT's low cytotoxicity profile. Conversely, autophagy is involved in MTX-induced cytotoxicity and MTX seems to act as an autophagy inducer, possibly through p62/LC3-II involvement.
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Affiliation(s)
- Ana Reis-Mendes
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.,Department of Biological Sciences, UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Félix Carvalho
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.,Department of Biological Sciences, UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Fernando Remião
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.,Department of Biological Sciences, UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Emília Sousa
- Laboratory of Organic and Pharmaceutical Chemistry, Chemistry Department, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.,CIIMAR-Interdisciplinary Centre of Marine and Environmental Research, 4450-208, Porto, Portugal
| | - Maria de Lourdes Bastos
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.,Department of Biological Sciences, UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Vera Marisa Costa
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal. .,Department of Biological Sciences, UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
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11
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Yong-Xin R, Xue-Bin Z, Shu-Xu D, Yongqiang Z, Ying L, Jing L, Ying-Dai G, Hong-Cai S, Eyden B. Histopathological and ultrastructural study of carotid atherosclerotic plaques: a study of four cases. Ultrastruct Pathol 2021; 45:319-334. [PMID: 34459698 DOI: 10.1080/01913123.2021.1968090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
To clarify the characteristics and origin of the cellular components in atherosclerosis, carotid atherosclerotic plaques (CAPs) of four patients were studied by light microscopy using hematoxylin-eosin, Congo red and alpha-smooth-muscle actin stains, and by transmission electron microscopy of different regions of CAPs. By light microscopy, CAPs were composed of 1) a fibrous cap; 2) an atherosclerotic core presenting focal fibrosis, neovascularization, hemorrhage, necrosis, chondrification and ossification; and 3) a basal band composed of a hyperplasic pseudo-media and affected tunica media. Ultrastructurally, the CAPs contained a diversity of cells including fibroblasts, myofibroblasts, osteochondrocytes, vascular smooth-muscle cells, foam cells and other myoid cells characterized by varied features of the above mentioned cells. The results indicated that CAPs were derived from a proliferation of multipotential mesenchymal stem cells, leading to the presence of degenerated foam cells and lipid-laden cells.
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Affiliation(s)
- Ru Yong-Xin
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Zhang Xue-Bin
- Department of Pathology, Tianjin Huanhu Hospital, Tianjin Medical University, Tianjin, China
| | - Dong Shu-Xu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Zhang Yongqiang
- Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Li Ying
- Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Liu Jing
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Gao Ying-Dai
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Shang Hong-Cai
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Beijing Dongzhimen Hospital, Beijing University of Chinese Medicine, Peking, China
| | - Brian Eyden
- Formerly: Department of Histopathology, Christie Hospital Nhs Trust, Manchester, UK
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12
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Impaired Autophagy Induced by oxLDL/ β2GPI/anti- β2GPI Complex through PI3K/AKT/mTOR and eNOS Signaling Pathways Contributes to Endothelial Cell Dysfunction. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6662225. [PMID: 34221236 PMCID: PMC8219424 DOI: 10.1155/2021/6662225] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/22/2021] [Accepted: 05/22/2021] [Indexed: 12/12/2022]
Abstract
Endothelial cell dysfunction plays a fundamental role in the pathogenesis of atherosclerosis (AS), and endothelial autophagy has protective effects on the development of AS. Our previous study had shown that oxidized low-density lipoprotein/β2-glycoprotein I/anti-β2-glycoprotein I antibody (oxLDL/β2GPI/anti-β2GPI) complex could promote the expressions of inflammatory cytokines and enhance the adhesion of leukocytes to endothelial cells. In the present study, we aimed to assess the effects of oxLDL/β2GPI/anti-β2GPI complex on endothelial autophagy and explore the associated potential mechanisms. Human umbilical vein endothelial cells (HUVECs) and mouse brain endothelial cell line (bEnd.3) were used as models of the vascular endothelial cells. Autophagy was evaluated by examining the expressions of autophagic proteins using western blotting analysis, autophagosome accumulation using transmission electron microscopy, and RFP-GFP-LC3 adenoviral transfection and autophagic flux using lysosome inhibitor chloroquine. The expressions of phospho-PI3K, phospho-AKT, phospho-mTOR, and phospho-eNOS were determined by western blotting analysis. 3-Methyladenine (3-MA) and rapamycin were used to determine the role of autophagy in oxLDL/β2GPI/anti-β2GPI complex-induced endothelial cell dysfunction. We showed that oxLDL/β2GPI/anti-β2GPI complex suppressed the autophagy, evidenced by an increase in p62 protein, a decrease in LC3-II and Beclin1, and a reduction of autophagosome generation in endothelial cells. Moreover, inhibition of autophagy was associated with PI3K/AKT/mTOR and eNOS signaling pathways. Rapamycin attenuated oxLDL/β2GPI/anti-β2GPI complex-induced endothelial inflammation, oxidative stress, and apoptosis, whereas 3-MA alone induced the endothelial injury. Our results suggested that oxLDL/β2GPI/anti-β2GPI complex inhibited endothelial autophagy via PI3K/AKT/mTOR and eNOS signaling pathways and further contributed to endothelial cell dysfunction. Collectively, our findings provided a novel mechanism for vascular endothelial injury in AS patients with an antiphospholipid syndrome (APS) background.
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13
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Tang R, Jia L, Li Y, Zheng J, Qi P. Narciclasine attenuates sepsis-induced myocardial injury by modulating autophagy. Aging (Albany NY) 2021; 13:15151-15163. [PMID: 34035183 PMCID: PMC8221305 DOI: 10.18632/aging.203078] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 04/29/2021] [Indexed: 12/22/2022]
Abstract
Acute myocardial injury (AMI) is often secondary to sepsis, which is a life-threatening disease associated with severe cardiac inflammation. Narciclasine, a plant alkaloid isolated from different members of the Amaryllidaceae family, has been extensively characterized as an antitumor and anti-inflammatory compound. In addition, autophagy is critical for sepsis-induced myocardial injury. However, the role and mechanism of autophagy by which narciclasine confers cardioprotection are still unclear. The present study aimed to investigate the underlying mechanism by which narciclasine affects the pathogenesis of sepsis-induced myocardial injury. Narciclasine effectively attenuated LPS-induced myocardial inflammation in vitro and in vivo. In addition, narciclasine protected cardiac function and suppressed the expression of inflammatory cytokines in LPS-induced heart tissue. Furthermore, narciclasine upregulated LPS-induced autophagic activity, and the autophagy inhibitor 3-MA abrogated narciclasine-mediated protection against LPS-induced AMI. Importantly, narciclasine exerted an inhibitory effect on the JNK signaling pathway, and JNK activity was tightly associated with narciclasine-induced autophagy and the consequent protective effects during AMI. Taken together, our findings indicate that narciclasine protects against LPS-induced AMI by inducing JNK-dependent autophagic flux; hence, narciclasine may be an effective and novel agent for the clinical treatment of sepsis-induced myocardial injury.
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Affiliation(s)
- Rong Tang
- Department of Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China
| | - Liu Jia
- Department of Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China
| | - Yunlong Li
- Department of Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China
| | - Junbo Zheng
- Department of Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China
| | - Pingping Qi
- Departments of Blood Transfusion, The First Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China
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14
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Kalugina KK, Sukhareva KS, Churkinа AI, Kostareva AA. Autophagy as a Pathogenetic Link and
a Target for Therapy of Musculoskeletal System Diseases. J EVOL BIOCHEM PHYS+ 2021. [DOI: 10.1134/s0022093021030145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Li X, Liu L, Li T, Liu M, Wang Y, Ma H, Mu N, Wang H. SIRT6 in Senescence and Aging-Related Cardiovascular Diseases. Front Cell Dev Biol 2021; 9:641315. [PMID: 33855020 PMCID: PMC8039379 DOI: 10.3389/fcell.2021.641315] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/11/2021] [Indexed: 12/14/2022] Open
Abstract
SIRT6 belongs to the nicotinamide adenine dinucleotide (NAD+)-dependent deacetylases and has established diverse roles in aging, metabolism and disease. Its function is similar to the Silent Information Regulator 2 (SIR2), which prolongs lifespan and regulates genomic stability, telomere integrity, transcription, and DNA repair. It has been demonstrated that increasing the sirtuin level through genetic manipulation extends the lifespan of yeast, nematodes and flies. Deficiency of SIRT6 induces chronic inflammation, autophagy disorder and telomere instability. Also, these cellular processes can lead to the occurrence and progression of cardiovascular diseases (CVDs), such as atherosclerosis, hypertrophic cardiomyopathy and heart failure. Herein, we discuss the implications of SIRT6 regulates multiple cellular processes in cell senescence and aging-related CVDs, and we summarize clinical application of SIRT6 agonists and possible therapeutic interventions in aging-related CVDs.
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Affiliation(s)
- Xiaokang Li
- Department of Cardiology, China Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Lin Liu
- Department of Dermatology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Tian Li
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Manling Liu
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Yishi Wang
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Heng Ma
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Nan Mu
- Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Haiyan Wang
- Department of Cardiology, China Tangdu Hospital, Fourth Military Medical University, Xi'an, China
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16
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Han JH, Park HS, Lee DH, Jo JH, Heo KS, Myung CS. Regulation of autophagy by controlling Erk1/2 and mTOR for platelet-derived growth factor-BB-mediated vascular smooth muscle cell phenotype shift. Life Sci 2021; 267:118978. [PMID: 33412209 DOI: 10.1016/j.lfs.2020.118978] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/16/2020] [Accepted: 12/22/2020] [Indexed: 12/26/2022]
Abstract
AIMS Vascular smooth muscle cell (VSMC) phenotype shift is involved in the pathophysiology of vascular injury or platelet-derived growth factor (PDGF)-induced abnormal proliferation and migration of VSMCs. We aimed to investigate the underlying mechanism involved in PDGF-mediated signaling pathways and autophagy regulation followed by VSMC phenotype shift. MAIN METHODS The proliferation, migration and apoptosis of cultured rat aortic VSMCs were measured, and cells undergoing phenotype shift and autophagy were examined. Specific inhibitors for target proteins in signaling pathways were applied to clarify their roles in regulating cell functions. KEY FINDINGS PDGF-BB stimulation initiated autophagy activation and synthetic phenotype transition by decreasing α-smooth muscle-actin (SMA), calponin and myosin heavy chain (MHC) and increasing osteopontin (OPN) expression. However, U0126, a potent extracellular signal-regulated kinase 1/2 (Erk1/2) inhibitor, decreased PDGF-BB-induced LC3 expression, while rapamycin, an inhibitor of the mammalian target of rapamycin (mTOR), increased it. Furthermore, U0126 decreased the expresseion of autophagy-related genes (Atgs) such as beclin-1, Atg7, Atg5, and Atg12-Atg5 complex, indicating that Erk1/2 is a regulator of PDGF-BB-induced VSMC autophagy. Regardless of autophagy inhibition by U0126 or activation by rapamycin, the PDGF-BB-induced decrease in SMA, calponin and MHC and increase in OPN expression were inhibited. Furthermore, PDGF-BB-stimulated VSMC proliferation, migration and proliferating cell nuclear antigen (PCNA) expression were inhibited by U0126 and rapamycin. SIGNIFICANCE These findings suggest that PDGF-BB-induced autophagy is strongly regulated by Erk1/2, an mTOR-independent pathway, and any approach for targeting autophagy modulation is a potential therapeutic strategy for addressing abnormal VSMC proliferation and migration.
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Affiliation(s)
- Joo-Hui Han
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea; Institute of Drug Research & Development, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Hyun-Soo Park
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea
| | - Do-Hyung Lee
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea
| | - Jun-Hwan Jo
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea
| | - Kyung-Sun Heo
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea
| | - Chang-Seon Myung
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea; Institute of Drug Research & Development, Chungnam National University, Daejeon 34134, Republic of Korea.
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17
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Human Umbilical Cord: Information Mine in Sex-Specific Medicine. Life (Basel) 2021; 11:life11010052. [PMID: 33451112 PMCID: PMC7828611 DOI: 10.3390/life11010052] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/08/2021] [Accepted: 01/12/2021] [Indexed: 12/12/2022] Open
Abstract
Biological differences between sexes should be considered in all stages of research, as sexual dimorphism starts in utero leading to sex-specific fetal programming. In numerous biomedical fields, there is still a lack of stratification by sex despite primary cultured cells retaining memory of the sex and of the donor. The sex of donors in biological research must be known because variations in cells and cellular components can be used as endpoints, biomarkers and/or targets of pharmacological studies. This selective review focuses on the current findings regarding sex differences observed in the umbilical cord, a widely used source of research samples, both in the blood and in the circulating cells, as well as in the different cellular models obtainable from it. Moreover, an overview on sex differences in fetal programming is reported. As it emerges that the sex variable is still often forgotten in experimental models, we suggest that it should be mandatory to adopt sex-oriented research, because only awareness of these issues can lead to innovative research.
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18
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Ruan Y, Zeng J, Jin Q, Chu M, Ji K, Wang Z, Li L. Endoplasmic reticulum stress serves an important role in cardiac ischemia/reperfusion injury (Review). Exp Ther Med 2020; 20:268. [PMID: 33199993 PMCID: PMC7664614 DOI: 10.3892/etm.2020.9398] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 08/19/2020] [Indexed: 12/12/2022] Open
Abstract
Although acute myocardial infarction is one of the most common fatal diseases worldwide, the understanding of its underlying pathogenesis continues to develop. Myocardial ischemia/reperfusion (I/R) can restore myocardial oxygen and nutrient supply. However, a large number of studies have demonstrated that recovery of blood perfusion after acute ischemia causes reperfusion injury to the heart. With progress made in the understanding of the underlying mechanisms of myocardial I/R and oxidative stress, a novel area of research that merits greater study has been identified, that of I/R-induced endoplasmic reticulum (ER) stress (ERS). Cardiac I/R can alter the function of the ER, leading to the accumulation of unfolded/misfolded proteins. The resulting ERS then induces the activation of signal transduction pathways, which in turn contribute to the development of I/R injury. The mechanism of I/R injury, and the causal relationship between I/R and ERS are reviewed in the present article.
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Affiliation(s)
- Yongxue Ruan
- Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Jingjing Zeng
- Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Qike Jin
- Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Maoping Chu
- Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Kangting Ji
- Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Zhongyu Wang
- Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Lei Li
- Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
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19
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Liu W, Sun J, Guo Y, Liu N, Ding X, Zhang X, Chi J, Kang N, Liu Y, Yin X. Calhex231 ameliorates myocardial fibrosis post myocardial infarction in rats through the autophagy-NLRP3 inflammasome pathway in macrophages. J Cell Mol Med 2020; 24:13440-13453. [PMID: 33043596 PMCID: PMC7701583 DOI: 10.1111/jcmm.15969] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 09/16/2020] [Accepted: 09/22/2020] [Indexed: 12/27/2022] Open
Abstract
The calcium‐sensing receptor (CaSR) is involved in the pathophysiology of many cardiovascular diseases, including myocardial infarction (MI) and hypertension. The role of Calhex231, a specific inhibitor of CaSR, in myocardial fibrosis following MI is still unclear. Using Wistar rats, we investigated whether Calhex231 ameliorates myocardial fibrosis through the autophagy‐NLRP3 inflammasome pathway in macrophages post myocardial infarction (MI). The rats were randomly divided into sham, MI and MI + Calhex231 groups. Compared with the sham rats, the MI rats consistently developed severe cardiac function, myocardial fibrosis and infiltration of inflammatory cells including macrophages. Moreover, inflammatory pathway including activation of NLRP3 inflammasome, IL‐1β and autophagy was significantly up‐regulated in myocardial tissue, infiltrated cardiac macrophages and peritoneal macrophages of the MI rats. These impacts were reversed by Calhex231. In vitro, studies revealed that calindol and rapamycin exacerbated MI‐induced autophagy and NLRP3 inflammasome activation in peritoneal macrophages. Calhex231 and 3‐Methyladenine (a specific inhibitor of autophagy) attenuated both autophagy and NLRP3 inflammasome activation; however, the caspase‐1 inhibitor Z‐YVAD‐FMK did not. Our study indicated that Calhex231 improved cardiac function and ameliorated myocardial fibrosis post MI, likely via the inhibition of autophagy‐mediated NLRP3 inflammasome activation; this provides a new therapeutic target for ventricular remodelling‐related cardiovascular diseases.
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Affiliation(s)
- Wenxiu Liu
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jiaxing Sun
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yutong Guo
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Na Liu
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xue Ding
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xin Zhang
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jinyu Chi
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ningning Kang
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yue Liu
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xinhua Yin
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
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20
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Melatonin potentials against viral infections including COVID-19: Current evidence and new findings. Virus Res 2020; 287:198108. [PMID: 32768490 PMCID: PMC7405774 DOI: 10.1016/j.virusres.2020.198108] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 12/14/2022]
Abstract
Viral infections are dangerous diseases for human health worldwide, which lead to significant morbidity and mortality each year. Because of their importance and the lack of effective therapeutic approaches, further attempts should be made to discover appropriate alternative or complementary treatments. Melatonin, a multifunctional neurohormone mainly synthesized and secreted by the pineal gland, plays some roles in the treatment of viral infections. Regarding a deadly outbreak of COVID-19 across the world, we decided to discuss melatonin functions against various viral infections including COVID-19. Therefore, in this review, we summarize current evidence on melatonin therapy for viral infections with focus on possible underlying mechanisms of melatonin actions.
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21
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M3, a 1,4-Dihydropyridine Derivative and Mixed L-/T-Type Calcium Channel Blocker, Attenuates Isoproterenol-Induced Toxicity in Male Wistar Rats. Cardiovasc Toxicol 2020; 20:627-640. [PMID: 32671560 DOI: 10.1007/s12012-020-09587-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Recent evidence indicates that Ca2+ dysregulation is involved in the pathogenesis of isoproterenol (ISP)-induced biochemical toxicity and associated oxidative stress. In this study, we investigated the chemopreventive benefit of M3, a 1,4-dihydropyridine calcium channel blocker, against ISP-induced toxicity in male Wistar rats. Adult rats were divided into eight groups of six rats/group. Groups 1-5 received normal saline (control, 10 mL/kg/day, p.o.), ISP (85 mg/kg/day, s.c.), M3 lower dose (M3LD, 5 mg/kg, p.o.), M3 upper dose (M3UD, 20 mg/kg/day, p.o.), and Nifedipine (NFD, 20 mg/kg/day, p.o.), respectively. Others (groups 6-8) were pretreated with either M3LD, M3UD or NFD one hour before ISP administration. All rats were sacrificed 24 h after the last administration and changes in biochemical, hematological, and antioxidant parameters were assessed. Histologic examination of the heart, liver and kidney was also conducted. ISP elevated (p < 0.05) Ca2+, alanine aminotransferase, lactate dehydrogenase, triglycerides, and low-density lipoprotein levels when compared with control. Similarly, ISP increased levels of markers of renal function (p < 0.01), C-reactive protein (148.1%) and myocardial malondialdehyde (MDA, 88.7%) and tumor necrosis factor-alpha (109.2%). Platelet level was reduced (p < 0.05) in the ISP-intoxicated control rats. M3 exhibited antioxidant property, reduced levels of triglycerides, MDA and improved biochemical and hematological alterations associated with ISP toxicity. M3, however, was not effective in restoring histological changes that characterized ISP toxicity at the doses used. M3 offers chemopreventive benefits against ISP toxicity possibly through L-/T-type calcium channels blockade and modulatory actions on biochemical and antioxidant homeostasis.
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22
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Zhao P, Zhang L, Gao L, Ding Q, Yang Q, Kuai J. Ulinastatin attenuates lipopolysaccharide-induced cardiac dysfunction by inhibiting inflammation and regulating autophagy. Exp Ther Med 2020; 20:1064-1072. [PMID: 32765659 PMCID: PMC7388552 DOI: 10.3892/etm.2020.8755] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 03/27/2020] [Indexed: 12/17/2022] Open
Abstract
Ulinastatin exerts protective effects against lipopolysaccharide (LPS)-induced cardiac dysfunction. Autophagy has been demonstrated to serve an important role in sepsis-induced cardiomyopathy; however, whether ulinastatin has an anti-autophagic effect in sepsis requires further investigation. The present study aimed to determine the protective effects of ulinastatin on cardiac dysfunction and its role in autophagy during sepsis. C57BL/6J mice were randomly divided into a control, LPS and LPS + ulinastatin group, the survival status of the mice was observed every 6 h and the survival rate at each time point was calculated for 7 days. Furthermore, JC-1 dye and ELISAs were used to analyze the mitochondrial membrane potential (MMP) and serum cardiac troponin I (cTnI) levels, respectively. Western blotting and ELISAs were used to measure the levels of tumor necrosis factor (TNF)-α and interleukin (IL)-6. In addition, the cardiac ultrastructure and the number of autophagosomes formed were visualized using transmission electron microscopy, and the pathological changes in the myocardial tissues were analyzed using hematoxylin & eosin staining. Finally, the expression levels of autophagy-related proteins were analyzed using western blotting and immunofluorescence staining. The current study indicated that ulinastatin significantly improved the survival rate of septic mice. It was suggested that ulinastatin may protect against LPS-induced myocardium injury through its anti-inflammatory activity, as decreased cTnI levels, increased MMP and decreased expression levels of TNF-α and IL-6 were all observed following ulinastatin treatment. Furthermore, the number of autophagosomes formed, and the expression levels of microtubule-associated protein light chain 3 and Beclin 1 were significantly decreased following ulinastatin treatment. It was further observed that ulinastatin suppressed LPS-induced autophagosome formation, as indicated by the accumulation of sequestosome 1/p62, and the elimination of lysosome-associated membrane glycoprotein 1. In conclusion, the results of the present study suggested that ulinastatin treatment may improve survival and exert a protective effect over LPS-induced cardiac dysfunction. Furthermore, this protective effect may be associated with its anti-inflammatory and anti-autophagic activity.
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Affiliation(s)
- Pin Zhao
- Department of Anesthesiology, Third Hospital of Xi'an, Xi'an, Shaanxi 710018, P.R. China
| | - Li Zhang
- Department of Anesthesiology, Third Hospital of Xi'an, Xi'an, Shaanxi 710018, P.R. China
| | - Longfei Gao
- Department of Anesthesiology, Third Hospital of Xi'an, Xi'an, Shaanxi 710018, P.R. China
| | - Qian Ding
- Department of Anesthesiology, Tangdu Hospital, The Second Affiliated Hospital of Air Force Medical University, Xi'an, Shanxi 710038, P.R. China
| | - Qian Yang
- Department of Anesthesiology, Third Hospital of Xi'an, Xi'an, Shaanxi 710018, P.R. China
| | - Jianke Kuai
- Department of Anesthesiology, Third Hospital of Xi'an, Xi'an, Shaanxi 710018, P.R. China
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Cui F, Hu HF, Guo J, Sun J, Shi M. The Effect of Autophagy on Chronic Intermittent Hypobaric Hypoxia Ameliorating Liver Damage in Metabolic Syndrome Rats. Front Physiol 2020; 11:13. [PMID: 32082187 PMCID: PMC7002389 DOI: 10.3389/fphys.2020.00013] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 01/13/2020] [Indexed: 12/19/2022] Open
Abstract
Aim Our previous study demonstrated that chronic intermittent hypobaric hypoxia (CIHH) can confer hepatic protection by reducing endoplasmic reticulum stress (ERS) in high-fat-high-fructose induced metabolic syndrome (MS) rats. It is known that there is a functional coupling between autophagy and ERS. This study aimed to investigate the effect of CIHH on autophagy function and adenosine mono-phosphate-activated protein kinase-mammalian target of rapamycin (AMPKα-mTOR) signaling pathway in hepatic tissue of MS rats. Main Methods 6-week old male Sprague-Dawley rats were randomly divided into: control (CON), CIHH (treated with hypobaric hypoxia simulating 5000-m altitude for 28 days, 6 h daily), MS (induced by 16-week high fat diet and 10% fructose water feeding), and MS + CIHH groups (exposed to CIHH after 16-week MS model). Food and water intakes, body weight, Lee's index, fat coefficient, systolic arterial pressure, blood biochemicals, and histopathology of liver were measured, the expression of phosphorylated (p)-AMPK, p-mTOR, autophagy-related and ERS-related proteins were assayed in hepatic tissue. Key Findings The MS rats displayed obesity, hypertension, polydipsia, glucose and lipids metabolism disorders, increased inflammatory cytokine, hepatic tissue morphological and functional damage, and the up-regulated expressions of ERS-related, autophagy-related proteins and p-mTOR, and the down-regulated expression of p-AMPKα. All aforementioned abnormalities in MS rats were ameliorated in MS + CIHH rats. Significance In conclusion CIHH confers hepatic protection through activating AMPK-mTOR signaling pathway and the autophagy function, thus inhibiting ERS in hepatic tissue.
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Affiliation(s)
- Fang Cui
- Department of Electron Microscope Laboratory Centre, Hebei Medical University, Shijiazhuang, China
| | - Hao Fei Hu
- Department of Clinical Laboratory, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jing Guo
- Department of Clinical Laboratory, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jie Sun
- Department of Clinical Laboratory, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Min Shi
- Department of Clinical Laboratory, Second Hospital of Hebei Medical University, Shijiazhuang, China
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Gao G, Chen W, Yan M, Liu J, Luo H, Wang C, Yang P. Rapamycin regulates the balance between cardiomyocyte apoptosis and autophagy in chronic heart failure by inhibiting mTOR signaling. Int J Mol Med 2019; 45:195-209. [PMID: 31746373 PMCID: PMC6889932 DOI: 10.3892/ijmm.2019.4407] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 10/17/2019] [Indexed: 12/18/2022] Open
Abstract
The progressive loss of cardiomyocytes caused by cell death leads to cardiac dysfunction and heart failure (HF). Rapamycin has been shown to be cardioprotective in pressure-overloaded and ischemic heart diseases by regulating the mechanistic target of rapamycin (mTOR) signaling network. However, the impact of rapamycin on cardiomyocyte death in chronic HF remains undetermined. Therefore, in the current study we addressed this issue using a rat myocardial infarction (MI)-induced chronic HF model induced by ligating the coronary artery. Following surgery, rats were randomly divided into six groups, including the sham-, vehicle- and rapamycin-operated groups, at 8 or 12 weeks post-MI. A period of 4 weeks after MI induction, the rats were treated with rapamycin (1.4 mg-kg-day) or vehicle for 4 weeks. Cardiac function was determined using echocardiography, the rats were subsequently euthanized and myocardial tissues were harvested for histological and biochemical analyses. In the cell culture experiments with H9c2 rat cardiomyocytes, apoptosis was induced using angiotensin II (100 nM; 24 h). Cardiomyocyte apoptosis and autophagy were assessed via measuring apoptosis- and autophagy-associated proteins. The activities of mTOR complex 1 (mTORC1) and mTORC2 were evaluated using the phosphorylation states of ribosomal S6 protein and Akt, respectively. The activity of the endoplasmic reticulum (ER) stress pathway was determined using the levels of GRP78, caspase-12, phospho-JNK and DDIT3. Echocardiographic and histological measurements indicated that rapamycin treatment improved cardiac function and inhibited cardiac remodeling at 8 weeks post-MI. Additionally, rapamycin prevented cardiomyocyte apoptosis and promoted autophagy at 8 weeks post-MI. Rapamycin treatment for 4 weeks inhibited the mTOR and ER stress pathways. Furthermore, rapamycin prevented angiotensin II-induced H9c2 cell apoptosis and promoted autophagy by inhibiting the mTORC1 and ER stress pathways. These results demonstrated that rapamycin reduced cardiomyocyte apoptosis and promoted cardiomyocyte autophagy, by regulating the crosstalk between the mTOR and ER stress pathways in chronic HF.
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Affiliation(s)
- Guangyuan Gao
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Weiwei Chen
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Mengjie Yan
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Jinsha Liu
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Huiling Luo
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Chang Wang
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Ping Yang
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
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Molecular machinery and interplay of apoptosis and autophagy in coronary heart disease. J Mol Cell Cardiol 2019; 136:27-41. [DOI: 10.1016/j.yjmcc.2019.09.001] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/01/2019] [Accepted: 09/05/2019] [Indexed: 12/18/2022]
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Gao S, Li S, Li Q, Zhang F, Sun M, Wan Z, Wang S. Protective effects of salvianolic acid B against hydrogen peroxide‑induced apoptosis of human umbilical vein endothelial cells and underlying mechanisms. Int J Mol Med 2019; 44:457-468. [PMID: 31173197 PMCID: PMC6605496 DOI: 10.3892/ijmm.2019.4227] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 05/23/2019] [Indexed: 12/12/2022] Open
Abstract
Salvianolic acid B (Sal B) is a water-soluble active component of Danshen and has anti-atherosclerotic effects. The present study aimed to evaluate the cytoprotective effects of Sal B against hydrogen peroxide (H2O2)-induced oxidative stress damage in human umbilical vein endothelial cells (HUVECs) and investigate the underlying mechanisms. It was revealed that Sal B protected the cells from H2O2-induced damage, as indicated by MTT results showing enhanced cell viability and by flow cytometric analysis showing reduced apoptosis of cells challenged with H2O2. Furthermore, as an underlying mechanism, the enhancement of autophagy was indicated to be accountable for the decrease in apoptosis, as Sal B caused the upregulation of light chain 3-II and Beclin-1, and downregulation of p62 under H2O2-induced oxidative stress. Finally, Sal B increased the phosphorylation of AMP kinase (AMPK) and decreased the phosphorylation of mammalian target of rapamycin (mTOR), but had no effect on the phosphorylation of AKT. In conclusion, the present study revealed that Sal B protects HUVECs from oxidative stress, at least partially by promoting autophagy via activation of the AMPK pathway and downregulation of the mTOR pathway.
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Affiliation(s)
- Shan Gao
- College of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Shiqin Li
- College of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Qin Li
- Department of Infectious Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Fuyong Zhang
- Department of Pharmacy, People's Hospital of Deyang City, Deyang, Sichuan 618000, P.R. China
| | - Mengqi Sun
- College of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Zilin Wan
- College of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Shurong Wang
- Department of Pharmacy, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
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Role of autophagy in atherosclerosis: foe or friend? JOURNAL OF INFLAMMATION-LONDON 2019; 16:8. [PMID: 31073280 PMCID: PMC6498679 DOI: 10.1186/s12950-019-0212-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 04/16/2019] [Indexed: 12/16/2022]
Abstract
Athrosclerosis is conceived as a chronic inflammatory status affecting cells from vascular walls. Different mechanisms and pathological features are evident at the onset of atherosclerotic changes via the engaging different cells from the vascular wall and circulatory cells. Attempts are currently focused on the detection of cell compensatory mechanisms against atherosclerotic changes to restore cell function and/or postpone severe vasculitis. Autophagy is an intracellular self-digesting process commonly protrudes exhausted organelles and injured cytoplasmic constituents via double-lipid bilayer membrane vesicles out the target cells. Recent investigations point to the critical and defensive role of autophagy in the vascular cells behavioral function such as endothelial cells and smooth muscle cells against different insults. Autophagy response and related effectors could be modulated in the favor to restore cell function and reduce pro-inflammatory status under pathological conditions. In this review, the recent findings were collected regarding the role of autophagy during atherosclerotic changes. We aimed to answer the question of how autophagy stimulation and/or inhibition could provide a promising effect on developing a sophisticated treatment for AS.
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Gyongyosi A, Szoke K, Fenyvesi F, Fejes Z, Debreceni IB, Nagy B, Tosaki A, Lekli I. Inhibited autophagy may contribute to heme toxicity in cardiomyoblast cells. Biochem Biophys Res Commun 2019; 511:732-738. [DOI: 10.1016/j.bbrc.2019.02.140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 02/25/2019] [Indexed: 10/27/2022]
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Zheng Y, Shi B, Ma M, Wu X, Lin X. The novel relationship between Sirt3 and autophagy in myocardial ischemia–reperfusion. J Cell Physiol 2018; 234:5488-5495. [PMID: 30485429 DOI: 10.1002/jcp.27329] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/10/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Yitian Zheng
- Cardiology Department, The First Affiliated Hospital of Anhui Medical University Hefei City, Anhui Province China
| | - Binhao Shi
- Cardiology Department, The First Affiliated Hospital of Anhui Medical University Hefei City, Anhui Province China
| | - Mengqing Ma
- Cardiology Department, The First Affiliated Hospital of Anhui Medical University Hefei City, Anhui Province China
| | - Xiaoqin Wu
- Cardiology Department, The First Affiliated Hospital of Anhui Medical University Hefei City, Anhui Province China
| | - Xianhe Lin
- Cardiology Department, The First Affiliated Hospital of Anhui Medical University Hefei City, Anhui Province China
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Antioxidant N-acetylcysteine inhibits maladaptive myocyte autophagy in pressure overload induced cardiac remodeling in rats. Eur J Pharmacol 2018; 839:47-56. [PMID: 30194941 DOI: 10.1016/j.ejphar.2018.08.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 08/25/2018] [Accepted: 08/27/2018] [Indexed: 11/21/2022]
Abstract
Increased oxidative stress and myocyte autophagy co-exist in cardiac remodeling. However, it is unclear whether oxidative stress mediates maladaptive myocyte autophagy in pathological ventricular remodeling. In this study, we tested the hypothesis that antioxidants prevent maladaptive myocyte autophagy in pressure overload-induced left ventricular (LV) remodeling. Sprague-Dawley rats underwent abdominal aortic constriction (AAC) or sham operation. The animals were randomized to receive an antioxidant N-acetylcysteine (NAC), an autophagy inhibitor 3-methyladenine (3-MA) or placebo treatment for 2 weeks. We measured LV structure and function by echocardiography and hemodynamics, myocyte autophagy and oxidative stress assessed by 8-hydroxy-2-deoxyguanosine (8-OHdG). AAC rats exhibited increased LV hypertrophy assessed by LV wall thickness and myocyte cross-sectional area. NAC prevented LV hypertrophy in AAC rats. There were no significant differences in LV fractional shortening, end-diastolic dimension and the maximal rate of LV pressure rise among the groups. AAC rats showed an increase in myocardial 8-OHdG that was prevented by NAC. The expression of LC3 II protein, a marker of autophagy, was increased at 2 weeks after AAC. Immunohistochemical scores further confirmed the increase in LC3 expression in AAC rats. The expression of autophagic proteins Beclin1 and Atg12 and ERK activity were also increased in AAC rats. NAC prevented the increases in LC3 II protein, LC3 scores, Beclin1, Atg12 and ERK activity in AAC rats. Inhibition of autophagy by 3-MA prevented LV hypertrophy after pressure overload. These findings suggest that antioxidants may be of value to prevent pressure overload-induced cardiac remodeling through inhibition of maladaptive myocyte autophagy.
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31
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Huerta-García E, Zepeda-Quiroz I, Sánchez-Barrera H, Colín-Val Z, Alfaro-Moreno E, Ramos-Godinez MDP, López-Marure R. Internalization of Titanium Dioxide Nanoparticles Is Cytotoxic for H9c2 Rat Cardiomyoblasts. Molecules 2018; 23:molecules23081955. [PMID: 30082584 PMCID: PMC6222559 DOI: 10.3390/molecules23081955] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/24/2018] [Accepted: 08/01/2018] [Indexed: 12/15/2022] Open
Abstract
Titanium dioxide nanoparticles (TiO₂ NPs) are widely used in industry and daily life. TiO₂ NPs can penetrate into the body, translocate from the lungs into the circulation and come into contact with cardiac cells. In this work, we evaluated the toxicity of TiO₂ NPs on H9c2 rat cardiomyoblasts. Internalization of TiO₂ NPs and their effect on cell proliferation, viability, oxidative stress and cell death were assessed, as well as cell cycle alterations. Cellular uptake of TiO₂ NPs reduced metabolic activity and cell proliferation and increased oxidative stress by 19-fold measured as H₂DCFDA oxidation. TiO₂ NPs disrupted the plasmatic membrane integrity and decreased the mitochondrial membrane potential. These cytotoxic effects were related with changes in the distribution of cell cycle phases resulting in necrotic death and autophagy. These findings suggest that TiO₂ NPs exposure represents a potential health risk, particularly in the development of cardiovascular diseases via oxidative stress and cell death.
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Affiliation(s)
- Elizabeth Huerta-García
- Departamento de Fisiología (Biología Celular), Instituto Nacional de Cardiología "Ignacio Chávez", Juan Badiano No. 1, Colonia Sección XVI, Tlalpan, C.P. 14080, Ciudad de México, Mexico.
| | - Iván Zepeda-Quiroz
- Departamento de Fisiología (Biología Celular), Instituto Nacional de Cardiología "Ignacio Chávez", Juan Badiano No. 1, Colonia Sección XVI, Tlalpan, C.P. 14080, Ciudad de México, Mexico.
| | - Helen Sánchez-Barrera
- Departamento de Fisiología (Biología Celular), Instituto Nacional de Cardiología "Ignacio Chávez", Juan Badiano No. 1, Colonia Sección XVI, Tlalpan, C.P. 14080, Ciudad de México, Mexico.
| | - Zaira Colín-Val
- Departamento de Fisiología (Biología Celular), Instituto Nacional de Cardiología "Ignacio Chávez", Juan Badiano No. 1, Colonia Sección XVI, Tlalpan, C.P. 14080, Ciudad de México, Mexico.
| | - Ernesto Alfaro-Moreno
- Swetox, Karolinska Institutet, Unit of Toxicology Sciences, Forskargatan 20, SE-151 36 Södertälje, Sweden.
| | - María Del Pilar Ramos-Godinez
- Departamento de Microscopía Electrónica, Instituto Nacional de Cancerología, Av. San Fernando No. 22, Colonia Sección XVI, Tlalpan, C.P. 14080 Ciudad de México, Mexico.
| | - Rebeca López-Marure
- Departamento de Fisiología (Biología Celular), Instituto Nacional de Cardiología "Ignacio Chávez", Juan Badiano No. 1, Colonia Sección XVI, Tlalpan, C.P. 14080, Ciudad de México, Mexico.
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H 2O 2 Signaling-Triggered PI3K Mediates Mitochondrial Protection to Participate in Early Cardioprotection by Exercise Preconditioning. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:1916841. [PMID: 30147831 PMCID: PMC6083504 DOI: 10.1155/2018/1916841] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/05/2018] [Accepted: 06/19/2018] [Indexed: 12/15/2022]
Abstract
Previous studies have shown that early exercise preconditioning (EEP) imparts a protective effect on acute cardiovascular stress. However, how mitophagy participates in exercise preconditioning- (EP-) induced cardioprotection remains unclear. EEP may involve mitochondrial protection, which presumably crosstalks with predominant H2O2 oxidative stress. Our EEP protocol involves four periods of 10 min running with 10 min recovery intervals. We added a period of exhaustive running and a pretreatment using phosphoinositide 3-kinase (PI3K)/autophagy inhibitor wortmannin to test this protective effect. By using transmission electron microscopy (TEM), laser scanning confocal microscopy, and other molecular biotechnology methods, we detected related markers and specifically analyzed the relationship between mitophagic proteins and mitochondrial translocation. We determined that exhaustive exercise associated with various elevated injuries targeted the myocardium, oxidative stress, hypoxia-ischemia, and mitochondrial ultrastructure. However, exhaustion induced limited mitochondrial protection through a H2O2-independent manner to inhibit voltage-dependent anion channel isoform 1 (VDAC1) instead of mitophagy. EEP was apparently safe to the heart. In EEP-induced cardioprotection, EEP provided suppression to exhaustive exercise (EE) injuries by translocating Bnip3 to the mitochondria by recruiting the autophagosome protein LC3 to induce mitophagy, which is potentially triggered by H2O2 and influenced by Beclin1-dependent autophagy. Pretreatment with the wortmannin further attenuated these effects induced by EEP and resulted in the expression of proapoptotic phenotypes such as oxidative injury, elevated Beclin1/Bcl-2 ratio, cytochrome c leakage, mitochondrial dynamin-1-like protein (Drp-1) expression, and VDAC1 dephosphorylation. These observations suggest that H2O2 generation regulates mitochondrial protection in EEP-induced cardioprotection.
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Zhang P, Ke J, Li Y, Huang L, Chen Z, Huang X, Zhang L, Xiao D. Long-term exposure to high altitude hypoxia during pregnancy increases fetal heart susceptibility to ischemia/reperfusion injury and cardiac dysfunction. Int J Cardiol 2018; 274:7-15. [PMID: 30017521 DOI: 10.1016/j.ijcard.2018.07.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 06/15/2018] [Accepted: 07/06/2018] [Indexed: 01/19/2023]
Abstract
BACKGROUND High altitude hypoxia (HAH) exposure affects fetal development. However, the fetal cardiovascular responses to the HAH are not well understood. We have tested the hypothesis that long-term HAH exposure alters the hypoxia/ischemia-sensitive gene expressions, leading to an increase in fetal heart susceptibility to ischemia/reperfusion (I/R) injury and cardiac dysfunction. METHODS Time-dated pregnant sheep were exposed to high-altitude (3820 m) or were maintained at sea level (~300 m) for 110 days. Fetal hearts were isolated from the near-term ewes and subjected to I/R in a Langendorff preparation. RESULTS HAH decreased the fetal body and heart weights in the female but not male fetuses. HAH had no effect on the left ventricle (LV) function at baseline, but increased the LV infarct size and attenuated the post-ischemic recovery of LV function in both male and female fetuses, as compared with the normoxic groups. HAH increased the protein levels of hypoxia-inducible factor (HIF)-1α and DNA methyltransferases type 3b (DNMT3b), but attenuated protein kinase C epsilon (PKCε) levels in the fetal hearts. AHA induced a 4.3 fold increase of miR-210 in the males and a 2.9 fold increase in female hearts. In addition, HAH had no effect on mTOR protein and phosphorylation levels but increased the autophagy biomarker, LC3B-II protein levels and LC3B-II/LC3B-I ratio in the fetal hearts. CONCLUSION The results suggest that gestational HAH exposure induces in utero programming of the hypoxia/ischemia-sensitive gene expression pattern in the developing heart and increases cardiac susceptibility to I/R injury.
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Affiliation(s)
- Peng Zhang
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA; The First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Jun Ke
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA; Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yong Li
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Lei Huang
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Zewen Chen
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA; Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiaohui Huang
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Lubo Zhang
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Daliao Xiao
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA.
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Chronic intermittent hypobaric hypoxia protects vascular endothelium by ameliorating autophagy in metabolic syndrome rats. Life Sci 2018; 205:145-154. [PMID: 29733850 DOI: 10.1016/j.lfs.2018.05.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/23/2018] [Accepted: 05/03/2018] [Indexed: 01/18/2023]
Abstract
AIMS The study aimed to investigate the protective effect of chronic intermittent hypobaric hypoxia (CIHH) on endothelium function and relaxation of mesenteric artery in metabolism syndrome (MS) rats. MAIN METHODS Male adult Sprague-Dawley rats were randomly divided into control (CON), CIHH (treated with 28-days hypobaric hypoxia simulating an altitude of 5000 m, 6 h daily), MS (induced by high fat diet and 10% fructose water feeding), and MS + CIHH groups. Body weight, systolic arterial pressure, blood biochemical and the endothelium dependent relaxation (EDR) of mesenteric arteries were measured. The expression of phosphor-endothelial nitric oxide synthase (p-eNOS), endoplasmic reticulum (ER) stress-related proteins and autophagy-related proteins in mesenteric arteries was assayed. KEY FINDINGS The MS rats displayed hypertension, obesity, metabolic abnormity and insulin resistance, EDR was attenuated, p-eNOS expression was down-regulated, the expressions of ER stress-related proteins were up-regulated, and autophagy dysfunction occurred. All aforementioned abnormalities in MS rats were ameliorated in MS + CIHH rats. Furthermore, the improvement of CIHH on EDR and p-eNOS was cancelled by the ER stress inducer, and the autophagy inhibitor. SIGNIFICANCE In conclusion CIHH protects endothelium function and enhances relaxation in mesenteric arteries of MS rats through improving autophagy function, reducing ER stress and up-regulating p-eNOS.
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Hou J, Zheng D, Xiao W, Li D, Ma J, Hu Y. Mangiferin Enhanced Autophagy via Inhibiting mTORC1 Pathway to Prevent High Glucose-Induced Cardiomyocyte Injury. Front Pharmacol 2018; 9:383. [PMID: 29719509 PMCID: PMC5913280 DOI: 10.3389/fphar.2018.00383] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/04/2018] [Indexed: 12/11/2022] Open
Abstract
Mangiferin functions as a perfect anti-oxidative compound in the diabetic heart, however, the exact mechanism remains to be elucidated. Here, we show the cardioprotective effect of mangiferin under high glucose-induced cardiotoxic condition mainly contributed to enhanced autophagy via suppressing mTORC1 downstream signal transduction. Primary neonatal rat cardiomyocytes were cultured to detect myocytes injury, autophagy, and related signal transduction under different doses of glucose and mangiferin treatment. High glucose (30 mM) reduced autophagic flux, and increased myocyte apoptosis and death compared with normal glucose (5.5 mM) as determined by variation of autophagy markers LC3-II, p62, parkin, GFP-LC3, or mRFP-LC3 fluorescence puncta, cell viability, cleaved caspase 3, cleaved PARP apoptosis indices, reactive oxygen species (ROS), MAO, and PI death indices. Conversely, mangiferin inhibited hyperglycemia associated oxidative stress by reducing ROS, MAO, cleaved caspase 3, and cleaved PARP generation, reestablishing cell viability, mitochondrial membrane potential, and enhancing autophagic flux, thereby preventing myocytes from high glucose-induced toxicity. Furthermore, cardioprotection with mangiferin was potentially related to the decreased mTOR phosphorylation and suppression of mTORC1 downstream signaling pathway. These data indicated the valuable effects of mangiferin on regulation of cardiac autophagy and pointed to the promising utilization for hyperglycemia control.
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Affiliation(s)
- Jun Hou
- Department of Pharmacy, Chengdu Military General Hospital, Chengdu, China
| | - Dezhi Zheng
- Department of Cardiovascular Surgery, Jinan Military General Hospital, Jinan, China
| | - Wenjing Xiao
- Department of Pharmacy, Chengdu Military General Hospital, Chengdu, China
| | - Dandan Li
- Base for Drug Clinical Trial, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Jie Ma
- Department of Pharmacy, Chengdu Military General Hospital, Chengdu, China
| | - Yonghe Hu
- Department of Pharmacy, Chengdu Military General Hospital, Chengdu, China
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Wieczorek A, Lysek-Gladysinska M, Walaszczyk A, Jelonek K, Smolarz M, Pietrowska M, Gabrys D, Kulik R, Widlak P. Changes in activity and structure of lysosomes from liver of mouse irradiated in vivo. Int J Radiat Biol 2018; 94:443-453. [PMID: 29611442 DOI: 10.1080/09553002.2018.1451005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
PURPOSE Lysosomes may have an important role in response to ionizing radiation. Moreover, radiation could affect autophagy, which process involves the activity of lysosomal enzymes. In the present study, the effect of ionizing radiation on the lysosomal compartment of mouse liver was investigated after in vivo exposure. MATERIALS AND METHODS Morphology and ultrastructure of hepatocytes were assessed by light and electron microscopy, and activities of selected lysosomal enzymes were assessed in 12, 36 and 120 h after exposure to the mean dose of 1 Gy. The levels of autophagy-related proteins LC3-II and p62 were compared by Western blotting between untreated and irradiated animals (120 h after exposure). RESULTS Increased number of autophagic vacuoles in hepatocytes from exposed animals was documented in the ultrastructural study; destroyed mitochondria were the dominant component of such vacuoles. Moreover, an increased activity of lysosomal hydrolases was observed after exposure. However, levels of autophagy substrates LC3-II and p62 were barely affected in exposed animals 120 h after irradiation when the accumulation of autophagic vacuoles was observed. CONCLUSION Effects of irradiation included an increased number of autophagic vacuoles, especially of autophagosomes, and increased activity of lysosomal enzymes. However, putative markers of autophagic flux were not observed, which suggested suppression of the completion of the radiation-mediated autophagy pathway.
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Affiliation(s)
- Anna Wieczorek
- a Department of Cell Biology and Electron Microscopy , Institute of Biology, University of Jan Kochanowski , Kielce , Poland
| | - Malgorzata Lysek-Gladysinska
- a Department of Cell Biology and Electron Microscopy , Institute of Biology, University of Jan Kochanowski , Kielce , Poland
| | - Anna Walaszczyk
- b Maria Sklodowska-Curie Institute - Oncology Center , Gliwice Branch , Gliwice , Poland
| | - Karol Jelonek
- b Maria Sklodowska-Curie Institute - Oncology Center , Gliwice Branch , Gliwice , Poland
| | - Mateusz Smolarz
- b Maria Sklodowska-Curie Institute - Oncology Center , Gliwice Branch , Gliwice , Poland
| | - Monika Pietrowska
- b Maria Sklodowska-Curie Institute - Oncology Center , Gliwice Branch , Gliwice , Poland
| | - Dorota Gabrys
- b Maria Sklodowska-Curie Institute - Oncology Center , Gliwice Branch , Gliwice , Poland
| | - Roland Kulik
- b Maria Sklodowska-Curie Institute - Oncology Center , Gliwice Branch , Gliwice , Poland
| | - Piotr Widlak
- b Maria Sklodowska-Curie Institute - Oncology Center , Gliwice Branch , Gliwice , Poland
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Li C, Jiang F, Li YL, Jiang YH, Yang WQ, Sheng J, Xu WJ, Zhu QJ. Rhynchophylla total alkaloid rescues autophagy, decreases oxidative stress and improves endothelial vasodilation in spontaneous hypertensive rats. Acta Pharmacol Sin 2018; 39:345-356. [PMID: 29119967 DOI: 10.1038/aps.2017.120] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 07/26/2017] [Indexed: 02/07/2023] Open
Abstract
Autophagy plays an important role in alleviating oxidative stress and stabilizing atherosclerotic plaques. However, the potential role of autophagy in endothelial vasodilation function has rarely been studied. This study aimed to investigate whether rhynchophylla total alkaloid (RTA) has a positive role in enhancing autophagy through decreasing oxidative stress, and improving endothelial vasodilation. In oxidized low-density lipoprotein (ox-LDL)-treated human umbilical vein endothelial cells (HUVECs), RTA (200 mg/L) significantly suppressed ox-LDL-induced oxidative stress through rescuing autophagy, and decreased cell apoptosis. In spontaneous hypertensive rats (SHR), administration of RTA (50 mg·kg-1·d-1, ip, for 6 weeks) improved endothelin-dependent vasodilation of thoracic aorta rings. Furthermore, RTA administration significantly increased the antioxidant capacity and alleviated oxidative stress through enhancing autophagy in SHR. In ox-LDL-treated HUVECs, we found that the promotion of autophagy by RTA resulted in activation of the AMP-activated protein kinase (AMPK) signaling pathway. Our results show that RTA treatment rescues the ox-LDL-induced autophagy impairment in HUVECs and improves endothelium-dependent vasodilation function in SHR.
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Macroautophagy and Chaperone-Mediated Autophagy in Heart Failure: The Known and the Unknown. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:8602041. [PMID: 29576856 PMCID: PMC5822756 DOI: 10.1155/2018/8602041] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 11/22/2017] [Indexed: 02/04/2023]
Abstract
Cardiac diseases including hypertrophic and ischemic cardiomyopathies are increasingly being reported to accumulate misfolded proteins and damaged organelles. These findings have led to an increasing interest in protein degradation pathways, like autophagy, which are essential not only for normal protein turnover but also in the removal of misfolded and damaged proteins. Emerging evidence suggests a previously unprecedented role for autophagic processes in cardiac physiology and pathology. This review focuses on the major types of autophagic processes, the genes and protein complexes involved, and their regulation. It discusses the key similarities and differences between macroautophagy, chaperone-mediated autophagy, and selective mitophagy structures and functions. The genetic models available to study loss and gain of macroautophagy, mitophagy, and CMA are discussed. It defines the markers of autophagic processes, methods for measuring autophagic activities, and their interpretations. This review then summarizes the major studies of autophagy in the heart and their contribution to cardiac pathology. Some reports suggest macroautophagy imparts cardioprotection from heart failure pathology. Meanwhile, other studies find macroautophagy activation may be detrimental in cardiac pathology. An improved understanding of autophagic processes and their regulation may lead to a new genre of treatments for cardiac diseases.
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Yuan Y, Pan SS, Shen YJ. Cardioprotection of exercise preconditioning involving heat shock protein 70 and concurrent autophagy: a potential chaperone-assisted selective macroautophagy effect. J Physiol Sci 2018; 68:55-67. [PMID: 27928720 PMCID: PMC10717675 DOI: 10.1007/s12576-016-0507-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 11/21/2016] [Indexed: 12/23/2022]
Abstract
It has been confirmed that exercise preconditioning (EP) has a protective effect on acute cardiovascular stress. However, how Hsp70 participates in EP-induced cardioprotection is unknown. EP may involve Hsp70 to repair unfolded proteins or may also stabilize the function of the endoplasmic reticulum via Hsp70-related autophagy to work on a protective formation. Our EP protocol involves four periods of 10 min running with 10 min recovery intervals. We added a period of exhaustive running to test this protective effect, using histology and molecular biotechnology methods to detect related markers. EP provided cardioprotection at its early and late phases against exhaustive exercise-induced ischemic myocardial injury. Results showed that Hsp70 co-chaperone protein BAG3, ubiquitin adaptor p62 and critical autophagy protein LC3 were significantly upregulated at the early phase. Meanwhile, Hsp70, Hsp70/BAG3 co-localization extent, LC31 and LC3II were significantly upregulated at the late phase. Hsp70 mRNA levels and LC3II/I ratios were also consistent with the extent of myocardial injury following exhaustive exercise. Hsp70 increase was delayed relative to BAG3 and p62 after EP, indicating a pre-synthesized phenomenon of BAG3 and p62 for chaperone-assisted selective autophagy (CASA). The decreased Hsp70, BAG3 and p62 levels and increased Hsp70/BAG3 co-localization extent and LC3 levels induced by exhaustive exercise after EP suggest that EP-induced cardioprotection might associate with CASA. Hsp70 has a cardioprotective role and has a closer link with CASA in LEP. Additionally, EP may not cause exhaustion-dependent excessive autophagy regulation. Collectively, during early and late EP, CASA potentially plays different roles in cardioprotection.
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Affiliation(s)
- Yang Yuan
- School of Kinesiology, Shanghai University of Sport, 399 Changhai Road, Shanghai, 200438, China
| | - Shan-Shan Pan
- School of Kinesiology, Shanghai University of Sport, 399 Changhai Road, Shanghai, 200438, China.
| | - Yu-Jun Shen
- School of Kinesiology, Shanghai University of Sport, 399 Changhai Road, Shanghai, 200438, China
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40
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Cammalleri M, Locri F, Catalani E, Filippi L, Cervia D, Dal Monte M, Bagnoli P. The Beta Adrenergic Receptor Blocker Propranolol Counteracts Retinal Dysfunction in a Mouse Model of Oxygen Induced Retinopathy: Restoring the Balance between Apoptosis and Autophagy. Front Cell Neurosci 2017; 11:395. [PMID: 29375312 PMCID: PMC5770647 DOI: 10.3389/fncel.2017.00395] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 11/28/2017] [Indexed: 12/29/2022] Open
Abstract
In a mouse model of oxygen induced retinopathy (OIR), beta adrenergic receptor (BAR) blockade has been shown to recover hypoxia-associated retinal damages. Although the adrenergic signaling is an important regulator of apoptotic and autophagic processes, the role of BARs in retinal cell death remains to be elucidated. The present study was aimed at investigating whether ameliorative effects of BAR blockers may occur through their coordinated action on apoptosis and autophagy. To this aim, retinas from control and OIR mice untreated or treated with propranolol, a non-selective BAR1/2 blocker, were characterized in terms of expression and localization of apoptosis and autophagy markers. The effects of propranolol on autophagy signaling were also evaluated and specific autophagy modulators were used to get functional information on the autophagic effects of BAR antagonism. Finally, propranolol effects on neurodegenerative processes were associated to an electrophysiological investigation of retinal function by recording electroretinogram (ERG). We found that retinas of OIR mice are characterized by increased apoptosis and decreased autophagy, while propranolol reduces apoptosis and stimulates autophagy. In particular, propranolol triggers autophagosome formation in bipolar, amacrine and ganglion cells that are committed to die by apoptosis in response to hypoxia. Also our data argue that propranolol, through the inhibition of the Akt-mammalian target of rapamycin pathway, activates autophagy which decreases retinal cell death. At the functional level, propranolol recovers dysfunctional ERG by recovering the amplitude of a- and b-waves, and oscillatory potentials, thus indicating an efficient restoring of retinal transduction. Overall, our results demonstrate that BAR1/2 are key regulators of retinal apoptosis/autophagy, and that BAR1/2 blockade leads to autophagy-mediated neuroprotection. Reinstating the balance between apoptotic and autophagic machines may therefore be viewed as a future goal in the treatment of retinopathies.
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Affiliation(s)
| | - Filippo Locri
- Department of Biology, University of Pisa, Pisa, Italy
| | - Elisabetta Catalani
- Department for Innovation in Biological, Agro-Food and Forest Systems, University of Tuscia, Viterbo, Italy
| | - Luca Filippi
- Neonatal Intensive Care Unit, Medical Surgical Fetal-Neonatal Department, Meyer University Children's Hospital, Florence, Italy
| | - Davide Cervia
- Department for Innovation in Biological, Agro-Food and Forest Systems, University of Tuscia, Viterbo, Italy
| | | | - Paola Bagnoli
- Department of Biology, University of Pisa, Pisa, Italy
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Li S, Liu C, Gu L, Wang L, Shang Y, Liu Q, Wan J, Shi J, Wang F, Xu Z, Ji G, Li W. Autophagy protects cardiomyocytes from the myocardial ischaemia-reperfusion injury through the clearance of CLP36. Open Biol 2017; 6:rsob.160177. [PMID: 27512143 PMCID: PMC5008017 DOI: 10.1098/rsob.160177] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 07/08/2016] [Indexed: 12/16/2022] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of the death worldwide. An increasing number of studies have found that autophagy is involved in the progression or prevention of CVD. However, the precise mechanism of autophagy in CVD, especially the myocardial ischaemia-reperfusion injury (MI/R injury), is unclear and controversial. Here, we show that the cardiomyocyte-specific disruption of autophagy by conditional knockout of Atg7 leads to severe contractile dysfunction, myofibrillar disarray and vacuolar cardiomyocytes. A negative cytoskeleton organization regulator, CLP36, was found to be accumulated in Atg7-deficient cardiomyocytes. The cardiomyocyte-specific knockout of Atg7 aggravates the MI/R injury with cardiac hypertrophy, contractile dysfunction, myofibrillar disarray and severe cardiac fibrosis, most probably due to CLP36 accumulation in cardiomyocytes. Altogether, this work reveals autophagy may protect cardiomyocytes from the MI/R injury through the clearance of CLP36, and these findings define a novel relationship between autophagy and the regulation of stress fibre in heart.
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Affiliation(s)
- Shiguo Li
- Department of Radiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, People's Republic of China
| | - Chao Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Lei Gu
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, People's Republic of China University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Lina Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yongliang Shang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Qiong Liu
- Department of Radiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, People's Republic of China
| | - Junyi Wan
- Department of Radiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, People's Republic of China
| | - Jian Shi
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Fang Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zhiliang Xu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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Zhou Z, Wang J, Song Y, He Y, Zhang C, Liu C, Zhao H, Dun Y, Yuan D, Wang T. Panax notoginseng saponins attenuate cardiomyocyte apoptosis through mitochondrial pathway in natural aging rats. Phytother Res 2017; 32:243-250. [DOI: 10.1002/ptr.5961] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 09/29/2017] [Accepted: 10/01/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Zhiyong Zhou
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
| | - Jiao Wang
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
| | - Yanan Song
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
| | - Yumin He
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
| | - Changcheng Zhang
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
| | - Chaoqi Liu
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
| | - Haixia Zhao
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
| | - Yaoyan Dun
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
| | - Ding Yuan
- RENHE Hospital of China Three Gorges University; Yichang 443002 P. R. China
| | - Ting Wang
- Medical College of China Three Gorges University; Yichang 443002 P. R. China
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Wang D, Yu W, Liu Y, Zhong G, Zhao Z, Yan X, Liu Q. Roles of Autophagy in Ischemic Heart Diseases and the Modulatory Effects of Chinese Herbal Medicine. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2017; 45:1401-1419. [PMID: 28946768 DOI: 10.1142/s0192415x17500768] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Autophagy is an evolutionarily conserved degradation process which eliminates dysfunctional proteins and cytoplasmic components to maintain homeostasis for cell survival. Increasing evidence has demonstrated the modulatory role of autophagy in ischemic heart diseases (IHDs). Traditionally, this process has been recognized as having protective functions, such as inhibiting atherosclerosis progression and reducing cell death during the ischemic phase. However, recent studies have suggested its dual roles in myocardial ischemia/reperfusion (MIR) injury. Excessive autophagy may play a deleterious role in cardiac function, due to overwhelming clearance of cellular constituents and proteins. Hence modulation of autophagy to increase cardiomyocyte survival and improve cardiac function is meaningful for the treatment of IHD. Chinese herbal medicine, including extractive compounds and patented drugs, has shown its potential role in treating IHD by addressing autophagy-related mechanisms. This review summarizes the updated knowledge on the molecular basis and modulatory role of autophagy in IHD and the recent progress of Chinese herbal medicine in its treatment.
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Affiliation(s)
- Dawei Wang
- * The Second Clinical School of Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China.,† Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China
| | - Weiqing Yu
- ‡ Department of Cardiology, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510095, China
| | - Yuntao Liu
- * The Second Clinical School of Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China.,† Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China
| | - Guofu Zhong
- * The Second Clinical School of Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Zhen Zhao
- * The Second Clinical School of Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Xia Yan
- * The Second Clinical School of Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China.,† Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China
| | - Qing Liu
- * The Second Clinical School of Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China.,§ Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
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Perrotta I. The origin of the autophagosomal membrane in human atherosclerotic plaque: a preliminary ultrastructural study. Ultrastruct Pathol 2017; 41:327-334. [PMID: 28796583 DOI: 10.1080/01913123.2017.1349853] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Autophagy is an evolutionarily conserved process that occurs ubiquitously and functions as a primary route for the degradation of damaged organelles and proteins in response to starvation, oxidative stress, and other harmful conditions. The initial event upon autophagy induction is the formation of a membranous cistern called the phagophore or isolation membrane, a cup-shaped structure that elongates, engulfs cytoplasmic "cargo", and fuses at its rims to give rise to the autophagosome within which cytoplasmic material is enclosed. Although thoroughly studied in diverse cell culture systems, few attempts have been made to analyze the membrane dynamics during phagophore biogenesis in tissues. With respect to the cardiovascular system, no structural information is currently available regarding the sources that may contribute to the nucleation and growth of the phagophore membrane. The results presented here demonstrate that in the cells of human atherosclerotic plaque the phagophores are in contact with the endoplasmic reticulum (ER) membranes. Initially, the phagophore appears as a membrane sac that enwraps injured organelles and dysfunctional proteins and then matures into a double-membrane, closed structure often containing portions of the ER. These structural data indicate that the membrane source that elongates the phagophore might probably come from the ER. The topographical relationship between the ER tubules and the phagophore might also favor an efficient mechanism to transfer lipids from their site of synthesis to the nascent membrane, thus promoting its elongation and, ultimately, the formation of the autophagosome.
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Affiliation(s)
- Ida Perrotta
- a Department of Biology, Ecology and Earth Sciences, Centre for Microscopy and Microanalysis, Transmission Electron Microscopy Laboratory , University of Calabria , Arcavacata di Rende , Cosenza , Italy
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45
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de Almeida AJPO, Ribeiro TP, de Medeiros IA. Aging: Molecular Pathways and Implications on the Cardiovascular System. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7941563. [PMID: 28874954 PMCID: PMC5569936 DOI: 10.1155/2017/7941563] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 06/27/2017] [Indexed: 02/06/2023]
Abstract
The world's population over 60 years is growing rapidly, reaching 22% of the global population in the next decades. Despite the increase in global longevity, individual healthspan needs to follow this growth. Several diseases have their prevalence increased by age, such as cardiovascular diseases, the leading cause of morbidity and mortality worldwide. Understanding the aging biology mechanisms is fundamental to the pursuit of cardiovascular health. In this way, aging is characterized by a gradual decline in physiological functions, involving the increased number in senescent cells into the body. Several pathways lead to senescence, including oxidative stress and persistent inflammation, as well as energy failure such as mitochondrial dysfunction and deregulated autophagy, being ROS, AMPK, SIRTs, mTOR, IGF-1, and p53 key regulators of the metabolic control, connecting aging to the pathways which drive towards diseases. In addition, senescence can be induced by cellular replication, which resulted from telomere shortening. Taken together, it is possible to draw a common pathway unifying aging to cardiovascular diseases, and the central point of this process, senescence, can be the target for new therapies, which may result in the healthspan matching the lifespan.
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Affiliation(s)
- Arthur José Pontes Oliveira de Almeida
- Departamento de Ciências Farmacêuticas/Centro de Ciências da Saúde, Universidade Federal da Paraíba, Cidade Universitária-Campus I, Caixa Postal 5009, 58.051-970 João Pessoa, PB, Brazil
| | - Thaís Porto Ribeiro
- Departamento de Ciências Farmacêuticas/Centro de Ciências da Saúde, Universidade Federal da Paraíba, Cidade Universitária-Campus I, Caixa Postal 5009, 58.051-970 João Pessoa, PB, Brazil
| | - Isac Almeida de Medeiros
- Departamento de Ciências Farmacêuticas/Centro de Ciências da Saúde, Universidade Federal da Paraíba, Cidade Universitária-Campus I, Caixa Postal 5009, 58.051-970 João Pessoa, PB, Brazil
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Chen C, Lu Y, Siu HM, Guan J, Zhu L, Zhang S, Yue J, Zhang L. Identification of Novel Vacuolin-1 Analogues as Autophagy Inhibitors by Virtual Drug Screening and Chemical Synthesis. Molecules 2017; 22:molecules22060891. [PMID: 28555021 PMCID: PMC6152680 DOI: 10.3390/molecules22060891] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 05/25/2017] [Accepted: 05/25/2017] [Indexed: 12/13/2022] Open
Abstract
Autophagy is a fundamental cellular degradation process which is essential for cell homeostasis, and dysfunctional autophagy has been associated with a variety of human diseases, such as cancer. Several autophagy chemical modulators have been applied in a number of preclinical or clinical trials against these autophagy related diseases, especially cancer. Small molecule vacuolin-1 potently and reversibly inhibits both endosomal-lysosomal trafficking and autophagosome-lysosome fusion, yet the molecular mechanisms underlying vacuolin-1 mediated autophagy inhibition remain unknown. Here, we first performed the virtual drug screening and identified 14 vacuolin-1 analogues as autophagy inhibitors. Based on these virtual screening results, we further designed and synthesized 17 vacuolin-1 analogues, and found that 13 of them are autophagy inhibitors and a couple of them are as potent as vacuolin-1. In summary, these studies expanded the pool of useful autophagy inhibitors and reveal the structural-activity relationship of vacuolin-1 analogues, which is useful for future development of vacuolin-1 analogues with high potency and for identification of the molecular targets of vacuolin-1.
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Affiliation(s)
- Chang Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Yingying Lu
- City University of Hong Kong Shen Zhen Research Institute, Shenzhen 518057, China.
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - Ho Ming Siu
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - Jintao Guan
- City University of Hong Kong Shen Zhen Research Institute, Shenzhen 518057, China.
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - LongChao Zhu
- City University of Hong Kong Shen Zhen Research Institute, Shenzhen 518057, China.
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - Shuang Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Jianbo Yue
- City University of Hong Kong Shen Zhen Research Institute, Shenzhen 518057, China.
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - Liangren Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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Vitiello M, Zullo A, Servillo L, Mancini FP, Borriello A, Giovane A, Della Ragione F, D'Onofrio N, Balestrieri ML. Multiple pathways of SIRT6 at the crossroads in the control of longevity, cancer, and cardiovascular diseases. Ageing Res Rev 2017; 35:301-311. [PMID: 27829173 DOI: 10.1016/j.arr.2016.10.008] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 10/24/2016] [Accepted: 10/24/2016] [Indexed: 12/27/2022]
Abstract
Sirtuin 6 (SIRT6) is a member of the sirtuin family NAD+-dependent deacetylases with multiple roles in controlling organism homeostasis, lifespan, and diseases. Due to its complex and opposite functional roles, this sirtuin is considered a two-edged sword in health and disease. Indeed, SIRT6 improves longevity, similarly to the founding yeast member, silent information regulator-2 (Sir2), and modulates genome stability, telomere integrity, transcription, and DNA repair. Its deficiency is associated with chronic inflammation, diabetes, cardiac hypertrophy, obesity, liver dysfunction, muscle/adipocyte disorders, and cancer. Besides, pieces of evidence showed that SIRT6 is a promoter of specific oncogenic pathways, thus disclosing its dual role regarding cancer development. Collectively, these findings suggest that multiple mechanisms, to date not entirely known, underlie the intriguing roles of SIRT6. Here we provide an overview of the current molecular mechanisms through which SIRT6 controls cancer and heart diseases, and describe its recent implications in the atherosclerotic plaque development.
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Affiliation(s)
- Milena Vitiello
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Alberto Zullo
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy; CEINGE-Advanced Biotechnologies, Naples, Italy
| | - Luigi Servillo
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | | | - Adriana Borriello
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Alfonso Giovane
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Fulvio Della Ragione
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Nunzia D'Onofrio
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Maria Luisa Balestrieri
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.
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TNF-α stimulates endothelial palmitic acid transcytosis and promotes insulin resistance. Sci Rep 2017; 7:44659. [PMID: 28304381 PMCID: PMC5356338 DOI: 10.1038/srep44659] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/13/2017] [Indexed: 01/15/2023] Open
Abstract
Persistent elevation of plasma TNF-α is a marker of low grade systemic inflammation. Palmitic acid (PA) is the most abundant type of saturated fatty acid in human body. PA is bound with albumin in plasma and could not pass through endothelial barrier freely. Albumin-bound PA has to be transported across monolayer endothelial cells through intracellular transcytosis, but not intercellular diffusion. In the present study, we discovered that TNF-α might stimulate PA transcytosis across cardiac microvascular endothelial cells, which further impaired the insulin-stimulated glucose uptake by cardiomyocytes and promoted insulin resistance. In this process, TNF-α-stimulated endothelial autophagy and NF-κB signaling crosstalk with each other and orchestrate the whole event, ultimately result in increased expression of fatty acid transporter protein 4 (FATP4) in endothelial cells and mediate the increased PA transcytosis across microvascular endothelial cells. Hopefully the present study discovered a novel missing link between low grade systemic inflammation and insulin resistance.
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Hashemzaei M, Entezari Heravi R, Rezaee R, Roohbakhsh A, Karimi G. Regulation of autophagy by some natural products as a potential therapeutic strategy for cardiovascular disorders. Eur J Pharmacol 2017; 802:44-51. [PMID: 28238768 DOI: 10.1016/j.ejphar.2017.02.038] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 02/22/2017] [Accepted: 02/22/2017] [Indexed: 01/09/2023]
Abstract
Autophagy is a lysosomal degradation process through which long-lived and misfolded proteins and organelles are sequestered, degraded by lysosomes, and recycled. Autophagy is an essential part of cardiomyocyte homeostasis and increases the survival of cells following cellular stress and starvation. Recent studies made clear that dysregulation of autophagy in the cardiovascular system leads to heart hypertrophy and failure. In this manner, autophagy seems to be an attractive target in the new treatment of cardiovascular diseases. Although limited activation of autophagy is generally considered to be cardioprotective, excessive autophagy leads to cell death and cardiac atrophy. Natural products such as resveratrol, berberine, and curcumin that are present in our diet, can trigger autophagy via canonical (Beclin-1-dependent) and non-canonical (Beclin-1-independent) pathways. The autophagy-modifying capacity of these compounds should be taken into consideration for designing novel therapeutic agents. This review focuses on the role of autophagy in the cardioprotective effects of these compounds.
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Affiliation(s)
- Mahmoud Hashemzaei
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
| | - Reza Entezari Heravi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
| | - Ramin Rezaee
- Department of Physiology and Pharmacology, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Ali Roohbakhsh
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gholamreza Karimi
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Bao J, Li G, Yuan X, Li PL, Gulbins E. Contribution of p62 to Phenotype Transition of Coronary Arterial Myocytes with Defective Autophagy. Cell Physiol Biochem 2017; 41:555-568. [PMID: 28214847 PMCID: PMC8216328 DOI: 10.1159/000457877] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 12/04/2016] [Indexed: 12/30/2022] Open
Abstract
Background: Autophagy disorder contributes to dedifferentiation of arterial smooth muscle cells, but the mechanisms are poorly understood. Here, we sought to investigate the role of scaffolding adaptor p62/SQSTM1 (p62) in phenotype switching of mouse coronary arterial myocytes (CAMs) induced by CD38 gene deficiency or lysosomal dysfunction which blocks autophagic flux in the cells. Methods: Protein expression was measured by western blot analysis and immunofluorescent staining. Cell cycle and proliferation rate were analyzed by flow cytometry and MTS assay respectively. mRNA abundance was tested by qRT-PCR. Results: CD38 gene deficiency or bafilomycin A1 (baf), a selective lysosomal inhibitor treatment increased proliferation rate and vimentin expression in CAMs which was prevented by p62 gene silencing. Cell percentage in G2/M and G0/G1 phase was decreased and increased by CD38 deficiency or baf treatment, respectively which was accompanied by accrual of cyclin-dependent kinase 1 (CDK1) protein. Although free ubiquitin content was increased, the colocalization of it to CDK1 was markedly decreased in CD38−/− or baf treated CAMs. Furthermore, the changes in both cell cycle and CDK1 ubiquitinylation could be restored by p62 gene silencing. Conclusion: The results suggest in CD38−/− or baf treated CAMs, p62 accumulation promotes phenotype transition and proliferation by accelerating cell cycle progress through G2/M which might relate to the compromised ubiquitinylation and degradation of CDK1.
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