1
|
Huang L, Guo B, Yan J, Wei H, Liu S, Li Y. CircHSPG2 knockdown attenuates hypoxia-induced apoptosis, inflammation, and oxidative stress in human AC16 cardiomyocytes by regulating the miR-1184/MAP3K2 axis. Cell Stress Chaperones 2023; 28:177-190. [PMID: 36810972 PMCID: PMC10050264 DOI: 10.1007/s12192-023-01328-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/24/2023] Open
Abstract
Circular RNAs (circRNAs) have been identified as vital regulators in cardiovascular diseases, including acute myocardial infarction (AMI). In this study, the function and mechanism of circRNA heparan sulfate proteoglycan 2 (circHSPG2) in hypoxia-induced injury in AC16 cardiomyocytes were investigated. AC16 cells were stimulated with hypoxia to establish an AMI cell model in vitro. Real-time quantitative PCR and western blot assays were performed to quantify the expression levels of circHSPG2, microRNA-1184 (miR-1184), and mitogen-activated protein kinase kinase kinase 2 (MAP3K2). Counting Kit-8 (CCK-8) assay was used to measure cell viability. Flow cytometry was performed to detect cell cycle and apoptosis. Enzyme-linked immunosorbent assay (ELISA) was used to determine the expression of inflammatory factors. Dual-luciferase reporter, RNA immunoprecipitation (RIP), and RNA pull-down assays were used to analyze the relationship between miR-1184 and circHSPG2 or MAP3K2. In AMI serum, circHSPG2 and MAP3K2 mRNA were highly expressed and miR-1184 was down-regulated. Hypoxia treatment elevated HIF1α expression and repressed cell growth and glycolysis. Moreover, hypoxia promoted cell apoptosis, inflammation, and oxidative stress in AC16 cells. Hypoxia-induced circHSPG2 expression in AC16 cells. CircHSPG2 knockdown alleviated hypoxia-induced AC16 cell injury. CircHSPG2 directly targeted miR-1184, and miR-1184 targeted and suppressed MAP3K2. Inhibition of miR-1184 or overexpression of MAP3K2 abolished the alleviated effect of circHSPG2 knockdown on hypoxia-induced AC16 cell injury. Overexpression of miR-1184 relieved hypoxia-induced impairment in AC16 cells by MAP3K2. CircHSPG2 could regulate MAP3K2 expression through miR-1184. CircHSPG2 knockdown protected AC16 cells from hypoxia-induced injury by regulating the miR-1184/MAP3K2 cascade.
Collapse
Affiliation(s)
- Liu Huang
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang, 050000, China
| | - Bingyan Guo
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang, 050000, China
| | - Jie Yan
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang, 050000, China
| | - Huiqing Wei
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang, 050000, China
| | - Suyun Liu
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang, 050000, China
| | - Yongjun Li
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang, 050000, China.
| |
Collapse
|
2
|
Cheng XJ, Li L, Xin BQ. MiR-124 Regulates the Inflammation and Apoptosis in Myocardial Infarction Rats by Targeting STAT3. Cardiovasc Toxicol 2021; 21:710-720. [PMID: 34037971 DOI: 10.1007/s12012-021-09661-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 05/17/2021] [Indexed: 11/27/2022]
Abstract
This study aimed to discover the effect of miR-124/STAT3 axis on the inflammation and cell apoptosis in myocardial infarction (MI) rats. Sprague-Dawley (SD) male rats were selected for establishing MI models and divided into Sham, MI, MI + anti-miR-124 and MI + Ad-miR-124 groups. Cardiac function was detected via echocardiography. Hematoxylin & eosin (HE) and triphenyltetrazolium chloride (TTC) staining were used to observe the pathological changes and infarction area, while transferase (TdT)-mediated D-UTP-biotin nick end labeling (TUNEL) assay was to observe myocardial apoptosis. Enzyme-linked immunosorbent assay (ELISA) was used to determine the serum levels of inflammatory cytokines. Quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) and western blotting were performed to determine the mRNA and protein levels, respectively. Dual luciferase reporter gene assay revealed that STAT3 was a target gene of miR-124. The expression levels of miR-124 were increased and the pSTAT3/STAT3 ratio was reduced in the MI rats. The rats in the MI group showed enhanced LVEDD and LVESD, reduced LVEF and LVFS, as well as larger myocardial infarction area compared with the Sham group, Besides, IL-1β, IL-6, TNF-α and MCP-1 levels were elevated and the expressions of Bax/Bcl-2 ratio and cleaved caspase-3 were downregulated in MI group. We further found that silencing miR-124 improved cardiac function, reduced infarction area and the levels of inflammatory cytokines, as well as prevented myocardial apoptosis in MI rats. Silencing miR-124 could inhibit the inflammation and apoptosis of myocardial cells, thereby relieving the MI injury via upregulation of STAT3.
Collapse
Affiliation(s)
- Xiao-Jing Cheng
- Department of Cardiovascular Medicine, Rizhao People's Hospital, No. 126, Taian Road, Donggang District, Rizhao, 276800, Shandong, China
| | - Lei Li
- Department of Cardiovascular Medicine, Rizhao People's Hospital, No. 126, Taian Road, Donggang District, Rizhao, 276800, Shandong, China
| | - Ben-Qiang Xin
- Department of Cardiovascular Medicine, Rizhao People's Hospital, No. 126, Taian Road, Donggang District, Rizhao, 276800, Shandong, China.
| |
Collapse
|
3
|
Chen TP, Zhang NJ, Wang HJ, Hu SG, Geng X. Knockdown of circROBO2 attenuates acute myocardial infarction through regulating the miR-1184/TRADD axis. Mol Med 2021; 27:21. [PMID: 33658002 PMCID: PMC7931513 DOI: 10.1186/s10020-021-00275-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 01/20/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Studies have found that circular RNAs (circRNAs) play key roles in cardiovascular diseases. However, the function of circROBO2 in acute myocardial infarction (AMI) is unclear. This study aimed to investigate the pathogenesis of circROBO2 in AMI. METHODS qRT-PCR and Western blot were used to determine the expression levels of circROBO2, miR-1184, and TRADD in AMI and sham-operated mouse models at mRNA and protein level, respectively. The relationship among miR-1184, circROBO2 and TRADD was evaluated by RNA immunoprecipitation (RIP) analysis and luciferase reporter gene analysis. The roles of circROBO2, miR-1184, and TRADD in myocardial cell apoptosis were evaluated using flow cytometry. Ultrasound echocardiography, serum creatine kinase MB (CK-MB) and lactate dehydrogenase (LDH), myocardial infarction area, and myocardial cell apoptosis were measured to examine the effects of circROBO2 on myocardial injury. RESULTS The expression levels of miR-1184 were significantly reduced, and the expression levels of circROBO2 and TRADD were significantly increased in MI group. CircROBO2 acted as a sponge for miR-1184 by upregulating the expression of TRADD. In addition, overexpression of miR-1184 enhanced the protective effect of knockdown of circROBO2 by partially inhibiting the expression of TRADD in vivo and in vitro. CONCLUSION Knockdown of circROBO2 reduced the apoptosis of cardiomyocytes by increasing the expression levels of miR-1184, which in turn decreased the expression levels of TRADD in the myocardium post-MI.
Collapse
Affiliation(s)
- Tian-Ping Chen
- Department of Cardiology, the First Affiliated Hospital of Bengbu Medical College, No. 287, Changhuai Road, Longzi Lake District, Bengbu city, 233003, Anhui province, China.
| | - Nai-Ju Zhang
- Department of Cardiology, the First Affiliated Hospital of Bengbu Medical College, No. 287, Changhuai Road, Longzi Lake District, Bengbu city, 233003, Anhui province, China
| | - Hong-Ju Wang
- Department of Cardiology, the First Affiliated Hospital of Bengbu Medical College, No. 287, Changhuai Road, Longzi Lake District, Bengbu city, 233003, Anhui province, China
| | - Si-Gan Hu
- Department of Cardiology, the First Affiliated Hospital of Bengbu Medical College, No. 287, Changhuai Road, Longzi Lake District, Bengbu city, 233003, Anhui province, China
| | - Xu Geng
- Department of Cardiology, the First Affiliated Hospital of Bengbu Medical College, No. 287, Changhuai Road, Longzi Lake District, Bengbu city, 233003, Anhui province, China
| |
Collapse
|
4
|
Chiang MH, Liang CJ, Lin LC, Yang YF, Huang CC, Chen YH, Kao HL, Chen YC, Ke SR, Lee CW, Lin MS, Chen YL. miR-26a attenuates cardiac apoptosis and fibrosis by targeting ataxia-telangiectasia mutated in myocardial infarction. J Cell Physiol 2020; 235:6085-6102. [PMID: 31990056 DOI: 10.1002/jcp.29537] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 01/08/2020] [Indexed: 12/16/2022]
Abstract
Apoptosis and fibrosis play a vital role in myocardial infarction (MI) induced tissue injury. Although microRNAs have been the focus of many studies on cardiac apoptosis and fibrosis in MI, the detailed effects of miR-26a is needed to further understood. The present study demonstrated that miR-26a was downregulated in ST-elevation MI (STEMI) patients and oxygen-glucose deprivation (OGD)-treated H9c2 cells. Downregulation of miR-26a was closely correlated with the increased expression of creatine kinase, creatine kinase-MB and troponin I in STEMI patients. Further analysis identified that ataxia-telangiectasia mutated (ATM) was a target gene for miR-26a based on a bioinformatics analysis. miR-26a overexpression effectively reduced ATM expression, apoptosis, and apoptosis-related proteins in OGD-treated H9c2 cells. In a mouse model of MI, the expression of miR-26a was significantly decreased in the infarct zone of the heart, whereas apoptosis and ATM expression were increased. miR-26a overexpression effectively reduced ATM expression and cardiac apoptosis at Day 1 after MI. Furthermore, we demonstrated that overexpression of miR-26a improved cardiac function and reduced cardiac fibrosis by the reduced expression of collagen type I and connective tissue growth factor (CTGF) in mice at Day 14 after MI. Overexpression of miR-26a or ATM knockdown decreased collagen I and CTGF expression in cultured OGD-treated cardiomyocytes. Taken together, these data demonstrate a prominent role for miR-26a in linking ATM expression to ischemia-induced apoptosis and fibrosis, key features of MI progression. miR-26a reduced MI development by affecting ATM expression and could be targeted in the treatment of MI.
Collapse
Affiliation(s)
- Ming-Hsien Chiang
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chan-Jung Liang
- Lipid Science and Aging Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Lung-Chun Lin
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Fan Yang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Chang Huang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Ying-Hsien Chen
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Hsien-Li Kao
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yu-Chen Chen
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Shin-Rong Ke
- Cardiology Division of Cardiovascular Medical Center, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - Chiang-Wen Lee
- Division of Basic Medical Sciences, Department of Nursing, and Chronic Diseases and Health Promotion Research Center, Chang Gung University of Science and Technology, Chiayi, Taiwan.,Department of Rehabilitation, Chang Gung Memorial Hospital, Chiayi, Taiwan.,Research Center for Industry of Human Ecology and Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Mao-Shin Lin
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yuh-Lien Chen
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| |
Collapse
|