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Li J, Feng Z, Lu B, Fang X, Huang D, Wang B. Resveratrol alleviates high glucose-induced oxidative stress and apoptosis in rat cardiac microvascular endothelial cell through AMPK/Sirt1 activation. Biochem Biophys Rep 2023; 34:101444. [PMID: 36926277 PMCID: PMC10011188 DOI: 10.1016/j.bbrep.2023.101444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/30/2023] [Accepted: 02/20/2023] [Indexed: 03/06/2023] Open
Abstract
Diabetic cardiomyopathy (DCM) is a common complication of diabetes. DCM causes extensive lesions on cardiac microvasculature that is predominantly cardiac microvascular endothelial cells (CMECs). Reducing high glucose (HG)-induced damage such as oxidative damage and apoptosis could alleviate the development of DCM. The natural polyphenol resveratrol (RSV) is widely suggested as a cardioprotective agent that protect against DCM. However, limited evidence supports the protection of RSV against oxidative damage and apoptosis and study on the direct effects of RSV in CMEC is missing. Therefore, the current paper aimed to illustrate if RSV could attenuate oxidative stress and apoptosis in CMEC and to investigate the underlying mechanisms. Our data showed that HG elevated reactive oxygen species, malondialdehyde, decreased superoxide dismutase activity, increased apoptotic cell percentage in CMEC, which were reversed by RSV administration. In addition, RSV demonstrated antioxidative and anti-apoptotic effects in CMEC through AMPK/Sirt1 activation, further confirmed by AMPK inhibition or Sirt1 silencing. This study provides new evidence to support RSV as a potential cardioprotective alternative in treating DCM.
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Affiliation(s)
- Jinyu Li
- Institution of Drug Clinical Trial, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515041, China
| | - Zikai Feng
- Department of Clinical Pharmacy, Division of Pharmacy, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Binger Lu
- Department of Clinical Pharmacy, Division of Pharmacy, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Xinzhe Fang
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041, China
| | - Danmei Huang
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041, China
| | - Bin Wang
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041, China
- Corresponding author.
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Hou J, Wang X, Li Y, Hou J, Li X, Zhang X, Pei H, Yang D. Positive regulation of endothelial Tom70 by metformin as a new mechanism against cardiac microvascular injury in diabetes. Mitochondrion 2022; 65:150-160. [PMID: 35779798 DOI: 10.1016/j.mito.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 05/22/2022] [Accepted: 06/26/2022] [Indexed: 12/30/2022]
Abstract
Microvascular protection is the main mechanism of metformin against diabetic complications. Cardiac microvascular endothelial cells (CMECs) are the basic component of cardiac microvessels, and they suffer from oxidative stress and mitochondrial dysfunction under type 2 diabetes mellitus (T2DM). Translocase of the outer mitochondrial membrane 70 (Tom70) improves mitochondrial dysfunction, but its role in the hearts of T2DM patients remains unclear. The purpose of this study was to demonstrate the protective effect of metformin on diabetic cardiac microvascular injury and to identify the role of Tom70 in this effect. T2DM mice were established by multiple intraperitoneal injections of low-dose streptozotocin and 12-week high-fat feeding. CMECs were isolated and cultured with normal glucose (NG), high glucose (HG), and HG plus high fat (HG-HF) media. The results indicated that long-term metformin treatment partly reversed cardiovascular complication and mitigated cardiac microvascular injury in T2DM. In addition, exposure to HG-HF led to CMEC damage, aggravated oxidative stress, aggravated mitochondrial dysfunction, and reduced mitochondrial Tom70 expression, whereas upregulation of Tom70 significantly ameliorated these injuries. Furthermore, metformin treatment promoted Tom70 expression and effectively reversed CMEC injury induced by HG-HF. However, all of these effects were interrupted after Tom70 was knocked down. In conclusion, T2DM damages microvascular integrity by activating a cycle of decreased Tom70 expression, mitochondrial dysfunction, and reactive oxygen species (ROS) overload in CMECs. However, metformin suppresses oxidative stress, relieves mitochondrial dysfunction, and promotes the expression of Tom70, ultimately ameliorating diabetic microvascular injury and heart complications.
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Affiliation(s)
- Juanni Hou
- Department of Digestion, The General Hospital of Western Theater Command, Chengdu 610083, China; Department of Cardiology, The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Xiong Wang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Yong Li
- Department of Internal Medicine, Chaotian District People's Hospital, Guangyuan City, Sichuan Province, China
| | - Jun Hou
- Department of Cardiology, Chengdu Third People's Hospital/Affiliated Hospital of Southwest Jiao Tong University, Chengdu, Sichuan 610031, China
| | - Xiuchuan Li
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Xinqin Zhang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Haifeng Pei
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu 610083, China.
| | - Dachun Yang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu 610083, China.
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Li G, Qiu Z, Li C, Zhao R, Zhang Y, Shen C, Liu W, Long X, Zhuang S, Wang Y, Shi B. Exosomal miR-29a in cardiomyocytes induced by angiotensin II regulates cardiac microvascular endothelial cell proliferation, migration and angiogenesis by targeting VEGFA. Curr Gene Ther 2022; 22:331-341. [PMID: 35240953 DOI: 10.2174/1566523222666220303102951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 11/27/2021] [Accepted: 12/23/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Exosomes released from cardiomyocytes (CMs) potentially play an important role in angiogenesis through microRNA (miR) delivery. Studies have reported an important role for miR-29a in regulating angiogenesis and pathological myocardial hypertrophy. However, whether CM-derived exosomal miR-29a is involved in regulating cardiac microvascular endothelial cell (CMEC) homeostasis during the development of myocardial hypertrophy has not clearly determined. METHODS Angiotensin II (Ang II) was used to induce CM hypertrophy, and ultracentrifugation was then used to extract exosomes from CM-conditioned medium. CMECs were cocultured with conditioned medium in the presence or absence of exosomes derived from CMs (Nor-exos) or exosomes derived from angiotensin II-induced CMs (Ang II-exos). Moreover, a rescue experiment was performed using CMs or CMECs infected with miR-29a mimics or inhibitors. Tube formation assays, Transwell assays and 5-ethynyl-20-deoxyuridine (EdU) assays were then performed to determine the changes in CMECs treated with exosomes. The expression of miR-29a was measured by qRT-PCR, and Western blotting and flow cytometry assays were performed to evaluate the proliferation of CMECs. RESULTS The results showed that Ang II-induced exosomal miR-29a inhibited the angiogenic ability, migratory function, and proliferation of CMECs. Subsequently, the downstream target gene of miR-29a, namely, vascular endothelial growth factor (VEGFA), was detected by qRT-PCR and Western blotting, and the results verified that miR-29a targeted the inhibition of VEGFA expression to subsequently inhibit the angiogenic ability of CMECs. CONCLUSION Our results suggest that exosomes derived from Ang II-induced CMs are involved in regulating CMCE proliferation, migration and angiogenesis by targeting VEGFA through the transfer of miR-29a to CMECs.
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Affiliation(s)
- Guangzhao Li
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine
| | - Zhimei Qiu
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Chaofu Li
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Ranzun Zhao
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Yu Zhang
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Changyin Shen
- Department of Cardiology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Weiwei Liu
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Xianping Long
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Shaowei Zhuang
- Department of Cardiology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine
| | - Yan Wang
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Bei Shi
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
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Ge GH, Dou HJ, Yang SS, Ma JW, Cheng WB, Qiao ZY, Hou YM, Fang WY. Glucagon-like peptide-1 protects against cardiac microvascular endothelial cells injured by high glucose. ASIAN PAC J TROP MED 2015; 8:73-8. [PMID: 25901929 DOI: 10.1016/s1995-7645(14)60191-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 10/10/2014] [Accepted: 11/15/2014] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To investigate the protective effect of glucagon-like peptid-1 (GLP-1) against cardiac microvascular endothelial cell (CMECs) injured by high glucose. METHODS CMECs were isolated and cultured. Superoxide assay kit and dihydroethidine (DHE) staining were used to assess oxidative stress. TUNEL staining and caspase 3 expression were used to assess the apoptosis of CMECs. H89 was used to inhibit cAMP/PKA pathway; fasudil was used to inhibit Rho/ROCK pathway. The protein expressions of Rho, ROCK were examined by Western blot analysis. RESULTS High glucose increased the production of ROS, the activity of NADPH, the apoptosis rate and the expression level of Rho/ROCK in CMECs, while GLP-1 decreased high glucose-induced ROS production, the NADPH activity and the apoptosis rate and the expression level of Rho/ROCK in CMECs, the difference were statistically significant (P<0.05). CONCLUSIONS GLP-1 could protect the cardiac microvessels against oxidative stress and apoptosis. The protective effects of GLP-1 are dependent on downstream inhibition of Rho through a cAMP/PKA-dependent manner, resulting in a subsequent decrease in the expression of NADPH oxidase.
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Affiliation(s)
- Guang-Hao Ge
- Department of Cardiology, Fengxian District Central Hospital, Shanghai 201499, China; Department of Cardiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital South campus, Shanghai 201499, China
| | - Hong-Jie Dou
- Department of Intensive Care Unit, Fengxian District Central Hospital, Shanghai 201499, China; Department of Intensive Care Unit, Department of Cardiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital South campus, Shanghai 201499, China
| | - Shuan-Suo Yang
- Department of Cardiology, Fengxian District Central Hospital, Shanghai 201499, China; Department of Cardiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital South campus, Shanghai 201499, China
| | - Jiang-Wei Ma
- Department of Cardiology, Fengxian District Central Hospital, Shanghai 201499, China; Department of Cardiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital South campus, Shanghai 201499, China
| | - Wen-Bo Cheng
- Department of Cardiology, Fengxian District Central Hospital, Shanghai 201499, China; Department of Cardiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital South campus, Shanghai 201499, China
| | - Zeng-Yong Qiao
- Department of Cardiology, Fengxian District Central Hospital, Shanghai 201499, China; Department of Cardiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital South campus, Shanghai 201499, China
| | - Yue-Mei Hou
- Department of Cardiology, Fengxian District Central Hospital, Shanghai 201499, China; Department of Cardiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital South campus, Shanghai 201499, China.
| | - Wei-Yi Fang
- Department of Cardiology, Shanghai Jiaotong University Affiliated Chest Hospital, Shanghai 200052, China
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Kuang L, Feng J, He G, Jing T. Knockdown of Nrf2 inhibits the angiogenesis of rat cardiac micro-vascular endothelial cells under hypoxic conditions. Int J Biol Sci 2013; 9:656-65. [PMID: 23904790 PMCID: PMC3729008 DOI: 10.7150/ijbs.5887] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 06/28/2013] [Indexed: 01/11/2023] Open
Abstract
Angiogenesis plays an important role in myocardial repair after myocardial infarction (MI). Cardiac micro-vascular endothelial cells (CMECs) are important participants in myocardial angiogenesis processes. Recent studies have revealed that Nuclear factor-erythroid 2-related factor 2 (Nrf2), a master transcription factor of endogenous anti-oxidative defense systems, exerts cardio-protection in the cardiovascular system. However, the role of Nrf2 in the process of myocardial angiogenesis and corresponding mechanisms are not fully understood. Thus, the present study investigated the role of Nrf2 in the angiogenesis of rat CMECs to hypoxia. Trans-well assay, three-dimensional Matrigel assay were used to determine cell migration and vascular tube formation. Real-time RT-PCR, ELISA and Western blot were measured mRNA and protein expression. Here, we report that the mRNA and protein expression of Nrf2 and heme oxygenase-1(HO-1) were temporarily upregulated under hypoxic condition. Furthermore, knock down of Nrf2 significantly suppressed the migration and vascular tube formation of rat CMECs to hypoxia, Nrf2 knockdown also significantly decreased HO-1 and vascular endothelial growth factor (VEGF) expression at 48 h after transfection under hypoxic condition. Finally, transfection of CMECs with the Nrf2 over-expressing lentiviral vector upregulated HO-1 expression with a concomitant increase in cell migration and vascular tube formation induced by hypoxia, and this effect was greatly attenuated in the presence of ZnPP (a HO-1 inhibitor). Taken together, these results suggest that Nrf2 may mediate the angiogenesis of CMECs under hypoxic condition, and HO-1 is involved in regulating the angiogenesis of CMECs through Nrf2. Therefore, Nrf2 is a potent regulator of hypoxia-condition mediated angiogenesis in CMECs, which may provide a therapeutic strategy for myocardial repair after MI.
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Affiliation(s)
- Lihong Kuang
- Department of Cardiology, Southwest Hospital, The Third Military Medical University, Chongqing City 400038, P. R. China
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