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Ma H, Lu Y, Zhu D, Jiang Z, Zhang F, Peng J, Wang L. Gypenoside A Protects Human Myocardial Cells from Ischemia/Reperfusion Injury via the circ_0010729/miR-370-3p/RUNX1 Axis. BIOCHEMISTRY. BIOKHIMIIA 2024; 89:973-986. [PMID: 38880656 DOI: 10.1134/s000629792405016x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 12/23/2023] [Accepted: 04/19/2024] [Indexed: 06/18/2024]
Abstract
Ischemia/reperfusion (I/R) injury is one of the major causes of cardiovascular disease. Gypenoside A (GP), the main active component of Gynostemma pentaphyllum, alleviates myocardial I/R injury. Circular RNAs (circRNAs) and microRNAs (miRNAs) are involved in the I/R injury. We explored the protective effect of GP on human cardiomyocytes (HCMs) via the circ_0010729/miR-370-3p/RUNX1 axis. Overexpression of circ_0010729 abolished the effects of GP on HMC, such as suppression of apoptosis and increase in cell viability and proliferation. Overexpression of miR-370-3p reversed the effect of circ_0010729 overexpression, resulting in the stimulation of HMC viability and proliferation and inhibition of apoptosis. The knockdown of miR-370-3p suppressed the effects of GP in HCMs. RUNX1 silencing counteracted the effect of miR-370-3p knockdown and maintained GP-induced suppression of apoptosis and stimulation of HMC viability and proliferation. The levels of RUNX1 mRNA and protein were reduced in cells expressing miR-370-3p. In conclusion, this study confirmed that GP alleviated the I/R injury of myocardial cell via the circ_0010729/miR-370-3p/RUNX1 axis.
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Affiliation(s)
- Hailiang Ma
- Department of Cardiovascular Medicine, Shaoxing Central Hospital, Shaoxing City, Zhejiang Province, 312000, China
| | - Yuanben Lu
- Department of Cardiovascular Medicine, Shaoxing Central Hospital, Shaoxing City, Zhejiang Province, 312000, China
| | - Dewen Zhu
- Department of Cardiovascular Medicine, Shaoxing Central Hospital, Shaoxing City, Zhejiang Province, 312000, China
| | - Zhenhua Jiang
- Department of Cardiovascular Medicine, Shaoxing Central Hospital, Shaoxing City, Zhejiang Province, 312000, China
| | - FanZhi Zhang
- Department of Cardiology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, Jiangxi, China
| | - Jun Peng
- Department of Cardiovascular Medicine, First People's Hospital of Xiaoshan District, Hangzhou, 311200, China.
| | - Li Wang
- Department of Cardiovascular Medicine, Shaoxing Central Hospital, Shaoxing City, Zhejiang Province, 312000, China.
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2
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Zhou W, Ji L, Liu X, Tu D, Shi N, Yangqu W, Chen S, Gao P, Zhu H, Ruan C. AIFM1, negatively regulated by miR-145-5p, aggravates hypoxia-induced cardiomyocyte injury. Biomed J 2022; 45:870-882. [PMID: 34863964 PMCID: PMC9795367 DOI: 10.1016/j.bj.2021.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/06/2021] [Accepted: 11/25/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Hypoxia-induced apoptosis is linked to the pathogenesis of myocardial infarction. The role of apoptosis-inducing factor mitochondria associated 1 (AIFM1) in cardiomyocyte injury remains unclear. This study was aimed at probing into the role and the underlying regulatory mechanism of AIFM1 in myocardial injury. METHODS H9c2 cardiomyocytes and C57BL/6 mice were used for myocardial hypoxic/ischemic injury and myocardial infarction animal models. Quantitative real-time polymerase chain reaction (qRT-PCR) was performed to evaluate the expression levels of AIFM1 mRNA and miR-145-5p. Western blot was used for examining the expression levels of AIFM1, caspase-3, cleaved caspase-3, p-53, and γ-H2AX. Cell viability was examined by cell counting kit-8 (CCK-8) assay and BrdU assay. Interaction between AIFM1 and miR-145-5p was determined by bioinformatics analysis, qRT-PCR, Western blot, and dual-luciferase reporter assay. RESULTS AIFM1 expression was markedly highly elevated, while miR-145-5p expression was significantly down-regulated in the myocardial infarction animal model and H9c2 cells under hypoxia. Augmentation of AIFM1 led to a dramatic decrease of cell viability, accompanied by an increase of the secretion of the inflammatory cytokines IL-1β, TNF-α, IL-6, and the expression of cleaved caspase-3. Furthermore, AIFM1 was identified as a target of miR-145-5p. In addition, miR-145-5p/AIFM1 axis regulated the expression of p53. CONCLUSION AIFM1 may exacerbate myocardial ischemic injury by promoting inflammation and the injury of cardiomyocytes, and its up-regulation may be partly due to the down-regulation of miR-145-5p.
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Affiliation(s)
- Wugang Zhou
- Department of Emergency, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China,Department of Intensive Care Unit, Shigatse People's Hospital, Shigatse, Tibet Autonomous Region, China
| | - Lv Ji
- Department of Intensive Care Unit, Shigatse People's Hospital, Shigatse, Tibet Autonomous Region, China
| | - Xuqin Liu
- Department of Intensive Care Unit, Shigatse People's Hospital, Shigatse, Tibet Autonomous Region, China
| | - Dan Tu
- Department of Intensive Care Unit, Shigatse People's Hospital, Shigatse, Tibet Autonomous Region, China
| | - Ningning Shi
- Department of Intensive Care Unit, Shigatse People's Hospital, Shigatse, Tibet Autonomous Region, China
| | - Wangmu Yangqu
- Department of Intensive Care Unit, Shigatse People's Hospital, Shigatse, Tibet Autonomous Region, China
| | - Shi Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, Hubei, China,Brain Center, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Pingjin Gao
- State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Department of Hypertension, Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Hong Zhu
- Clinical Medical School, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China,Corresponding author. Clinical Medical School, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Room 401, Building 1, Jinzun Rd. 115, Pudong Dist., Shanghai 200125, China.
| | - Chengchao Ruan
- State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Department of Hypertension, Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China,Corresponding author. Department of Hypertension, Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Ruijin 2nd Rd. 197, Shanghai 200024, China.
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3
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Wang L, Su H, Liu W. Hsa_circ_0010729 regulates H 2O 2-induced myocardial injury by regulating miR-1184/RIPK1 axis. Transpl Immunol 2022; 74:101653. [PMID: 35772682 DOI: 10.1016/j.trim.2022.101653] [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: 01/15/2022] [Revised: 06/07/2022] [Accepted: 06/22/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Ischemia-reperfusion (I/R) is an important risk factor for cardiovascular diseases (CVDs) and cardiac transplantation, as I/R can cause myocardial cell hypoxia/reoxygenation (H/R) injury. Recent research has shown that circular RNAs (circRNAs) may affect the progress of H/R-induced myocardial injury, but the mechanism remains unknown. Our work explored the role of circ_0010729 in H2O2-induced myocardial injury. METHODS The levels of circ_0010729, microRNA-1184 (miR-1184) and mRNA of receptor interacting serine/threonine kinase 1 (RIPK1) were indicated by quantitative real-time polymerase chain reaction (qRT-PCR) in human cardiac myocytes (HCMs). Meanwhile, the protein level of RIPK1 was quantified by western blot analysis. Besides, the cell functions were examined by 5-Ethynyl-29-deoxyuridine (EdU) assay, flow cytometry assay, western blot and antioxidant indexes analysis. Furthermore, the interplay between miR-1184 and circ_0010729 or RIPK1 was detected by dual-luciferase reporter assay. Eventually, the in vivo experiments were applied to measure the role of circ_0010729. RESULTS The levels of circ_0010729 RNA and RIPK1 protein were increased, and the miR-1184 was decreased in HCMs exposed to H2O2. In functional analysis, circ_0010729 deficiency restrained cell apoptosis and oxidative stress, whereas promoted cell proliferation in HCMs under H2O2 exposure. Moreover, miR-1184 inhibited the H2O2-induced myocardial injury by targeting RIPK1. Mechanistically, circ_0010729 acted as a miR-1184 sponge to regulate the level of RIPK1. CONCLUSION Circ_0010729 promotes H2O2-induced myocardial injury, and thus circ_001729 may be targeted as a potential therapy for H/R-induced myocardial injury.
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Affiliation(s)
- Lingna Wang
- Department of Geriatrics, The Second Affiliated Hospital of Hainan Medical University, No.48, Baishuitang Road, Haikou, Hainan Province 571000, China
| | - Huiqin Su
- Department of Cardiology, Qionghai Hospital of Traditional Chinese Medicine, Qionghai City, Hainan Province 571400, China
| | - Wen Liu
- Department of Geriatrics, The Second Affiliated Hospital of Hainan Medical University, No.48, Baishuitang Road, Haikou, Hainan Province 571000, China.
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Gao X, Tian X, Huang Y, Fang R, Wang G, Li D, Zhang J, Li T, Yuan R. Role of circular RNA in myocardial ischemia and ageing-related diseases. Cytokine Growth Factor Rev 2022; 65:1-11. [PMID: 35561533 DOI: 10.1016/j.cytogfr.2022.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 01/10/2023]
Abstract
Circular RNA (circRNA) is a new endogenous transcription product, which has attracted significant attention in RNA biology research.CircRNA comprise exons or introns involved in regulation of various mechanisms.These molecules are stable and species-specific, as well as cell and tissue-specific.Cardiovascular diseases particularly myocardial ischemia and ageing-related diseases, pose a major health care burden and novel treatments and biomarkers should be explored.Recent findings indicate that circRNAs are implicated in biological processes, such as glucose metabolism, fatty acid oxidation, mitochondrial biosynthesis, implying that they are potential targets for myocardial ischemia treatment.In the present review, the functions of circRNAs in the heart are described, with emphasis given on in the relationship with myocardial ischemia and cardiac aging-related diseases.Directions for future research are also summarized.
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Affiliation(s)
- Xiaolong Gao
- School of Graduate, Shaanxi University of Chinese Medicine, No. 1 Middle section of Shiji Avenue, Xianyang 712046, China; Department of Cardiology, Shaanxi Provincial Hospital of Chinese Medicine, No.4 Xihuamen Street, Xi'an 710003, China
| | - Xin Tian
- Department of Cardiology, Shaanxi Provincial Hospital of Chinese Medicine, No.4 Xihuamen Street, Xi'an 710003, China
| | - Ye Huang
- Department of Emergency, Xiyuan Hospital, China Academy of Chinese Medical Sciences, No.1 Xiyuan Playground Street, Beijing 100091, China
| | - Rong Fang
- School of Graduate, Shaanxi University of Chinese Medicine, No. 1 Middle section of Shiji Avenue, Xianyang 712046, China
| | - Gendi Wang
- School of Graduate, Shaanxi University of Chinese Medicine, No. 1 Middle section of Shiji Avenue, Xianyang 712046, China; Department of Cardiology, Shaanxi Provincial Hospital of Chinese Medicine, No.4 Xihuamen Street, Xi'an 710003, China
| | - Dan Li
- School of Graduate, Shaanxi University of Chinese Medicine, No. 1 Middle section of Shiji Avenue, Xianyang 712046, China; Department of Cardiology, Shaanxi Provincial Hospital of Chinese Medicine, No.4 Xihuamen Street, Xi'an 710003, China
| | - Junru Zhang
- Department of Cardiology, Shaanxi Provincial Hospital of Chinese Medicine, No.4 Xihuamen Street, Xi'an 710003, China.
| | - Tian Li
- School of Basic Medicine, Fourth Military Medical University, No. 169 Changle West Rd, Xi'an 710032, China.
| | - Ruihua Yuan
- School of Graduate, Shaanxi University of Chinese Medicine, No. 1 Middle section of Shiji Avenue, Xianyang 712046, China; Real World Clinical Research Institute, Shaanxi University of Chinese Medicine, No. 1 Middle section of Shiji Avenue, Xianyang 712046, China.
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5
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Mao X, Wang L, Chen C, Tao L, Ren S, Zhang L. Circ_0124644 enhances ox-LDL-induced cell damages in human umbilical vein endothelial cells through upregulating FOXO4 by sponging miR-370-3p. Clin Hemorheol Microcirc 2022; 81:135-147. [PMID: 35570481 DOI: 10.3233/ch-211375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND: Circular RNA circ_0124644 has crucial regulation in the progression of coronary artery diseases, including atherosclerosis (AS). The aim of this study was to explore the regulatory mechanism of circ_0124644 in oxidized low-density lipoprotein (ox-LDL)-induced endothelial injury in human umbilical vein endothelial cells (HUVECs). METHODS: Cell viability and proliferation were assessed using cell counting kit-8 (CCK-8) assay and EdU assay. The apoptosis detection was performed by flow cytometry. Angiogenesis was evaluated through tube formation assay. The protein analysis was conducted via western blot. Inflammatory cytokines were examined by enzyme-linked immunosorbent assay (ELISA). The expression determination of circ_0124644, microRNA-370-3p (miR-370-3p) and forkhead box protein O4 (FOXO4) was performed through reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were used to analyze the interaction between targets. RESULTS: Treatment of ox-LDL resulted in the inhibition of cell viability, proliferation and angiogenesis but the promotion of apoptosis and inflammation in HUVECs. These ox-LDL-induced cell damages were alleviated after the downregulation of circ_0124644. Circ_0124644 interacted with miR-370-3p, and the regulatory role of circ_0124644 was associated with the sponge function of miR-370-3p. Additionally, miR-370-3p targeted FOXO4 and circ_0124644 increased the expression of FOXO4 through acting as a sponge of miR-370-3p. Overexpression of miR-370-3p protected from ox-LDL-induced injury via the downregulation of FOXO4. CONCLUSION: All results revealed that circ_0124644 accelerated endothelial injury in ox-LDL-treated HUVECs by mediating miR-370-3p-related FOXO4 expression.
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Affiliation(s)
- Xiang Mao
- Department of Cardiology, the First People’s Hospital of Taizhou City, Taizhou, Zhejiang, China
| | - Lingqing Wang
- Department of Cardiology, the First People’s Hospital of Taizhou City, Taizhou, Zhejiang, China
| | - Changgong Chen
- Department of Cardiology, the First People’s Hospital of Taizhou City, Taizhou, Zhejiang, China
| | - Luyuan Tao
- Department of Cardiology, the First People’s Hospital of Taizhou City, Taizhou, Zhejiang, China
| | - Shijia Ren
- Department of Cardiology, the First People’s Hospital of Taizhou City, Taizhou, Zhejiang, China
| | - Li Zhang
- Department of Cardiology, the First People’s Hospital of Taizhou City, Taizhou, Zhejiang, China
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6
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Jin L, Zhang Y, Jiang Y, Tan M, Liu C. Circular RNA Rbms1 inhibited the development of myocardial ischemia reperfusion injury by regulating miR-92a/BCL2L11 signaling pathway. Bioengineered 2022; 13:3082-3092. [PMID: 35068339 PMCID: PMC8973616 DOI: 10.1080/21655979.2022.2025696] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Acute myocardial infarction (AMI) is characterized by high morbidity and mortality rates. Circular RNAs collectively participate in the initiation and development of AMI. The purpose of this study was to investigate the role of circRbms1 in AMI. Ischemia-reperfusion (I/R) was performed to establish an AMI model. RT-qPCR and Western blotting were performed to detect mRNA and analyze protein expression, respectively. The interaction between miR-92a and circRbms1/BCL2L11 was confirmed by luciferase and RNA pull-down assays. circRbms1 is overexpressed in AMI. However, circRbms1 knockdown alleviated H9c2 cell apoptosis and reduced the release of reactive oxygen species. circRbms1 targeted miR-92a, the downregulation of which alleviated the effects of circRbms1 knockdown and increased oxidative stress and H9c2 cell apoptosis. Moreover, circRbms1 sponged miR-92a to upregulate BCL2L11, which modulated the expression of apoptosis-related genes. circRbms1 participated in myocardial I/R injury by regulating the miR-92a/BCL2L11 signaling pathway, which may provide a new strategy for the treatment of AMI.
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Affiliation(s)
- Ling Jin
- Department of Clinical Laboratory, Nanjing First Hospital, Affiliated to Nanjing Medical University, Nanjing, China
| | - Yuan Zhang
- Department of Clinical Laboratory, Nanjing First Hospital, Affiliated to Nanjing Medical University, Nanjing, China
| | - Yun Jiang
- Department of Clinical Laboratory, Nanjing First Hospital, Affiliated to Nanjing Medical University, Nanjing, China
| | - Mingjuan Tan
- Department of Clinical Laboratory, Nanjing First Hospital, Affiliated to Nanjing Medical University, Nanjing, China
| | - Caidong Liu
- Department of Clinical Laboratory, Nanjing First Hospital, Affiliated to Nanjing Medical University, Nanjing, China
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7
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Wang D, Tian L, Wang Y, Gao X, Tang H, Ge J. Circ_0001206 regulates miR-665/CRKL axis to alleviate hypoxia/reoxygenation-induced cardiomyocyte injury in myocardial infarction. ESC Heart Fail 2022; 9:998-1007. [PMID: 35023295 PMCID: PMC8934946 DOI: 10.1002/ehf2.13725] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 10/20/2021] [Accepted: 11/10/2021] [Indexed: 01/06/2023] Open
Abstract
Aims Myocardial infarction (MI) is a type of cardiovascular disease caused by myocardial necrosis. Growing evidences have suggested that circular RNAs (circRNAs) play crucial roles in cardiac hypoxia/reoxygenation (H/R)‐induced injury of MI. Methods and results Hypoxia/reoxygenation model of H9C2 cells was established and circ_0001206 expression was detected via quantitative real‐time polymerase chain reaction. Ribonuclease R (RNase R) and Actinomycin D (Act D) assays verified the stability. Cell counting kit‐8 (CCK‐8), western blot, TUNEL, and flow cytometry assays evaluated cell viability and cell apoptosis. RNA pull‐down, RNA binding protein immunoprecipitation (RIP), and luciferase reporter assays explored the mechanisms underlying MI. All experimental data were presented with mean ± standard deviation (SD) and P < 0.05 indicated statistical significance. Circ_0001206 was low‐expressed in H9C2 cells under H/R treatment. Circ_0001206 was formed by cyclization of CRK like proto‐oncogene, adaptor protein (CRKL). Circ_0001206 overexpression promoted cell viability and inhibited cardiomyocyte apoptosis. It was confirmed that circ_0001206 regulated CRKL expression via acting as a competing endogenous RNA (ceRNA) of microRNA‐665 (miR‐665). CRKL played a protective role in MI. Conclusions Circ_0001206 regulates miR‐665/CRKL axis to alleviate H/R‐induced cardiomyocyte injury in MI. Our findings suggest that circ_0001206 might be a potential target for MI treatment.
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Affiliation(s)
- Dongmei Wang
- Department of Cardiology, Zhang Ye People's Hospital Affiliated to Hexi University, Zhangye, China
| | - Limei Tian
- Medical College of Hexi University, Zhangye, China
| | - Yan Wang
- Department of Cardiology, Zhang Ye People's Hospital Affiliated to Hexi University, Zhangye, China
| | - Xiaoli Gao
- Department of Cardiology, Zhang Ye People's Hospital Affiliated to Hexi University, Zhangye, China
| | - Hanbo Tang
- Department of Cardiac Surgery, Gansu Provincial Maternity and Child-care Hospital, No.143 North Qilihe Street, Lanzhou, Gansu, 730050, China
| | - Junbo Ge
- Department of Cardiac Surgery, Gansu Provincial Maternity and Child-care Hospital, No.143 North Qilihe Street, Lanzhou, Gansu, 730050, China.,Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Disease, Building 16, No.1609 Xietu Road, Shanghai, 200032, China
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8
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Zhang Y, Liu S, Ding L, Wang D, Li Q, Li D. Circ_0030235 knockdown protects H9c2 cells against OGD/R-induced injury via regulation of miR-526b. PeerJ 2021; 9:e11482. [PMID: 34820154 PMCID: PMC8603820 DOI: 10.7717/peerj.11482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/27/2021] [Indexed: 11/20/2022] Open
Abstract
Backgrounds Acute myocardial infarction (MI) is the common clinical manifestation of coronary heart disease. Circular RNAs (circRNAs) act key roles in cardiomyocytes growth and angiogenesis. However, their functions in MI are not entirely clear. This research intended to investigate the role and underlying mechanisms of circ_0030235 in H9c2 cells. Methods H9c2 cells were conducted to oxygen glucose deprivation/reperfusion (OGD/R) inducement to establish the MI model. Circ_0030235 and miR-526b expression was tested and altered by qRT-PCR and transfection. Cell viability, apoptosis and reactive oxygen species (ROS) injury were tested by CCK-8 assay, TUNEL assay kit, and ROS Detection Assay Kit, respectively. Assessment of cell injury-related factors was performed by employing ELISA, Mitochondrial Viability Staining and the JC-1-Mitochondrial Membrane Potential Assay Kit. The relationship between circ_0030235 and miR-526b was analyzed by dual luciferase reporter assay. The expression of key proteins was analyzed by western blot. Results Circ_0030235 was highly expressed in OGD/R-induced H9c2 cells. OGD/R inducement cell viability, while accelerated apoptosis. Besides, the level ROS, cell injury-related factors, mitochondrial membrane potential were notably elevated by OGD/R inducement, while mitochondrial viability was remarkably declined. Whereas, these impacts were all noticeably remitted by circ_0030235 knockdown. miR-526b was a target of circ_0030235. Circ_0030235 knockdown-induced impacts were all notably abrogated by miR-526b inhibition, including the activating impacts on PI3K/AKT and MEK/ERK pathways. Conclusions This research implied that circ_0030235 knockdown might remit OGD/R-induced impacts via activation of PI3K/AKT and MEK/ERK pathways and regulation of miR-526b.
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Affiliation(s)
- Yuquan Zhang
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Shuzhu Liu
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Limin Ding
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Dawei Wang
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Qiangqiang Li
- Department of Library, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Library, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Dongdong Li
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
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9
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Moukette B, Barupala NP, Aonuma T, Sepulveda M, Kawaguchi S, Kim IM. Interactions between noncoding RNAs as epigenetic regulatory mechanisms in cardiovascular diseases. Methods Cell Biol 2021; 166:309-348. [PMID: 34752338 DOI: 10.1016/bs.mcb.2021.06.002] [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: 01/04/2023]
Abstract
Cardiovascular diseases (CVDs) represent the foremost cause of mortality in the United States and worldwide. It is estimated that CVDs account for approximately 17.8 million deaths each year. Despite the advances made in understanding cellular mechanisms and gene mutations governing the pathophysiology of CVDs, they remain a significant cause of mortality and morbidity. A major segment of mammalian genomes encodes for genes that are not further translated into proteins. The roles of the majority of such noncoding ribonucleic acids (RNAs) have been puzzling for a long time. However, it is becoming increasingly clear that noncoding RNAs (ncRNAs) are dynamically expressed in different cell types and have a comprehensive selection of regulatory roles at almost every step involved in DNAs, RNAs and proteins. Indeed, ncRNAs regulate gene expression through epigenetic interactions, through direct binding to target sequences, or by acting as competing endogenous RNAs. The profusion of ncRNAs in the cardiovascular system suggests that they may modulate complex regulatory networks that govern cardiac physiology and pathology. In this review, we summarize various functions of ncRNAs and highlight the recent literature on interactions between ncRNAs with an emphasis on cardiovascular disease regulation. Furthermore, as the broad-spectrum of ncRNAs potentially establishes new avenues for therapeutic development targeting CVDs, we discuss the innovative prospects of ncRNAs as therapeutic targets for CVDs.
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Affiliation(s)
- Bruno Moukette
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Nipuni P Barupala
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Tatsuya Aonuma
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Marisa Sepulveda
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Satoshi Kawaguchi
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Il-Man Kim
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN, United States; Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, IN, United States; Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States.
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10
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Yang T, Long T, Du T, Chen Y, Dong Y, Huang ZP. Circle the Cardiac Remodeling With circRNAs. Front Cardiovasc Med 2021; 8:702586. [PMID: 34250050 PMCID: PMC8267062 DOI: 10.3389/fcvm.2021.702586] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/02/2021] [Indexed: 12/16/2022] Open
Abstract
Cardiac remodeling occurs after the heart is exposed to stress, which is manifested by pathological processes such as cardiomyocyte hypertrophy and apoptosis, dendritic cells activation and cytokine secretion, proliferation and activation of fibroblasts, and finally leads to heart failure. Circular RNAs (circRNAs) are recently recognized as a specific type of non-coding RNAs that are expressed in different species, in different stages of development, and in different pathological conditions. Growing evidences have implicated that circRNAs play important regulatory roles in the pathogenesis of a variety of cardiovascular diseases. In this review, we summarize the biological origin, characteristics, functional classification of circRNAs and their regulatory functions in cardiomyocytes, endothelial cells, fibroblasts, immune cells, and exosomes in the pathogenesis of cardiac remodeling.
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Affiliation(s)
- Tiqun Yang
- Department of Cardiology, Center for Translational Medicine, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,National Health Commission (NHC) Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
| | - Tianxin Long
- Department of Cardiology, Center for Translational Medicine, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,National Health Commission (NHC) Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
| | - Tailai Du
- Department of Cardiology, Center for Translational Medicine, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,National Health Commission (NHC) Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
| | - Yili Chen
- Department of Cardiology, Center for Translational Medicine, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,National Health Commission (NHC) Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
| | - Yugang Dong
- Department of Cardiology, Center for Translational Medicine, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,National Health Commission (NHC) Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
| | - Zhan-Peng Huang
- Department of Cardiology, Center for Translational Medicine, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,National Health Commission (NHC) Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China.,National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
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11
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Ward Z, Pearson J, Schmeier S, Cameron V, Pilbrow A. Insights into circular RNAs: their biogenesis, detection, and emerging role in cardiovascular disease. RNA Biol 2021; 18:2055-2072. [PMID: 33779499 DOI: 10.1080/15476286.2021.1891393] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Circular RNAs (circRNAs) are an evolutionarily conserved form of noncoding RNA with covalently closed loop structures. Initial studies established a functional role for circRNAs as potent microRNA sponges and many other studies have focussed solely on this. However, the biological functions of most circRNAs are still undetermined and other functional roles are gaining traction. These include protein sponges and regulators, and coding for proteins with an alternative mechanism of translation, potentially opening up a whole new transcriptome. The first step to gaining insight into circRNA function is accurate identification and various software platforms have been developed. Specialized detection software has now evolved into whole bioinformatics pipelines that can be used for detection, de novo identification, functional prediction, and validation of circRNAs. However, few cardiovascular circRNA studies have utilized these tools. This review summarizes current knowledge of circRNA biogenesis, bioinformatic detection tools and the emerging role of circRNAs in cardiovascular disease.
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Affiliation(s)
- Zoe Ward
- Christchurch Heart Institute, University of Otago, Christchurch, New Zealand
| | - John Pearson
- Biostatistics and Computational Biology Unit, University of Otago, Christchurch, New Zealand
| | - Sebastian Schmeier
- Institute of Natural and Mathematical Sciences, Massey University, Auckland, New Zealand
| | - Vicky Cameron
- Christchurch Heart Institute, University of Otago, Christchurch, New Zealand
| | - Anna Pilbrow
- Christchurch Heart Institute, University of Otago, Christchurch, New Zealand
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12
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Circular RNAs in Sudden Cardiac Death Related Diseases: Novel Biomarker for Clinical and Forensic Diagnosis. Molecules 2021; 26:molecules26041155. [PMID: 33670057 PMCID: PMC7926443 DOI: 10.3390/molecules26041155] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/17/2021] [Accepted: 02/18/2021] [Indexed: 11/17/2022] Open
Abstract
The prevention and diagnosis of sudden cardiac death (SCD) are among the most important keystones and challenges in clinical and forensic practice. However, the diagnostic value of the current biomarkers remains unresolved issues. Therefore, novel diagnostic biomarkers are urgently required to identify patients with early-stage cardiovascular diseases (CVD), and to assist in the postmortem diagnosis of SCD cases without typical cardiac damage. An increasing number of studies show that circular RNAs (circRNAs) have stable expressions in myocardial tissue, and their time- and tissue-specific expression levels might reflect the pathophysiological status of the heart, which makes them potential CVD biomarkers. In this article, we briefly introduced the biogenesis and functional characteristics of circRNAs. Moreover, we described the roles of circRNAs in multiple SCD-related diseases, including coronary artery disease (CAD), myocardial ischemia or infarction, arrhythmia, cardiomyopathy, and myocarditis, and discussed the application prospects and challenges of circRNAs as a novel biomarker in the clinical and forensic diagnosis of SCD.
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13
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Circular RNA circ_0010729 Knockdown Attenuates Oxygen-Glucose Deprivation-Induced Human Cardiac Myocytes Injury by miR-338-3p/CALM2 Axis. J Cardiovasc Pharmacol 2021; 77:594-602. [PMID: 33951696 DOI: 10.1097/fjc.0000000000000988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 12/30/2020] [Indexed: 12/24/2022]
Abstract
ABSTRACT Circular RNAs have pivotal roles in cardiovascular disease. The injury of cardiac myocytes is associated with occurrence of cardiovascular disease. Circular RNA hsa_circ_0010729 (circ_0010729) is associated with cardiac myocytes injury. However, the mechanism of circ_0010729 in cardiac myocytes injury remains largely unclear. In our study, cardiac myocytes were treated by oxygen-glucose deprivation (OGD). The abundances of circ_0010729, microRNA-338-3p (miR-338-3p), and calmodulin 2 (CALM2) were detected by quantitative reverse transcription polymerase chain reaction or Western blot. OGD-induced damage in AC16 cells was assessed by cell viability, apoptosis, and autophagy using Cell Counting Kit-8, flow cytometry, and Western blot analyses. The target relationship of miR-338-3p and circ_0010729 or CALM2 was explored by starBase and dual-luciferase reporter analysis. Our results showed that the circ_0010729 level was enhanced in OGD-treated AC16 cells and murine primary cardiac myocytes. circ_0010729 silence weakened OGD-induced viability inhibition and promotion of apoptosis and autophagy in AC16 cells and murine primary cardiac myocytes. miR-338-3p was sponged by circ_0010729 and miR-338-3p knockdown alleviated the effect of circ_0010729 silence on OGD-induced damage. miR-338-3p directly targeted CALM2 to inhibit OGD-induced damage in AC16 cells. circ_0010729 could regulate CALM2 expression by sponging miR-338-3p. Collectively, circ_0010729 interference mitigated OGD-induced damage in cardiac myocytes through increasing cell viability and inhibiting apoptosis and autophagy by regulating miR-338-3p/CALM2 axis. This study indicated circ_0010729 might act as a target for treatment of cardiovascular disease.
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14
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Mohammadi D, Bastani A, Zafari Y, Esmaealzadeh S, Rastgou N, Bargahi M, Moghbelinejad S. The Expression Pattern and Clinicopathological Importance of Hsa_circ_000425 in Colorectal Cancer. INTERNATIONAL JOURNAL OF MOLECULAR AND CELLULAR MEDICINE 2021; 9:266-272. [PMID: 33688484 PMCID: PMC7936077 DOI: 10.22088/ijmcm.bums.9.4.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 01/02/2021] [Indexed: 11/25/2022]
Abstract
Although colorectal cancer (CRC) is one of the most common cancers, the exact molecular mechanism of this cancer is not yet known. Circular RNAs (circRNAs), a class of non-coding RNAs, are newly identified and their role in the pathogenesis of various cancers has been shown. In this research, we studied the expression pattern and clinical importance of hsa_circ_000425 in CRC patients. After evaluation of hsa_circ_000425 expression rate in 4 CRC cell lines and 100 paired CRC tissues, the potential correlation between hsa_circ_000425 expression rate and clinicopathological parameters of CRC patients was analyzed. Additionally, receiver operating characteristic (ROC) curve was drawn to study the diagnostic value of hsa_circ_000425. A significant downregulation of hsa_circ_000425 was observed in both CRC tissues and cell lines. In addition, this downregulation was significantly associated with differentiation and lymphatic metastasis. The area under the ROC curve of hsa_circ_000425 was 0.839 (P < 0.001). hsa_circ_000425 may have a role in the pathogenesis of CRC and might act as a potential biomarker for the diagnosis and treatment of CRC; although further molecular studies must be performed in this regard.
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Affiliation(s)
- Davood Mohammadi
- Department of Surgery, School of Medicine , Qazvin University of Medical Sciences, Qazvin, Iran
| | - Ali Bastani
- Department of Internal Medicine, School of Medicine , Qazvin University of Medical Sciences, Qazvin, Iran
| | - Yazdan Zafari
- Department of Hematology and Medical Oncology, School of Medicine , Qazvin University of Medical Sciences, Qazvin, Iran
| | | | - Nafiseh Rastgou
- School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Mohammad Bargahi
- School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Sahar Moghbelinejad
- Research Institute for Prevention of Non-Communicable Diseases, Cellular and Molecular Research Centre , Qazvin University of Medical Sciences, Qazvin, Iran
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15
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Circ-ITCH restrains the expression of MMP-2, MMP-9 and TNF-α in diabetic retinopathy by inhibiting miR-22. Exp Mol Pathol 2020; 118:104594. [PMID: 33309614 DOI: 10.1016/j.yexmp.2020.104594] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/10/2020] [Accepted: 12/06/2020] [Indexed: 02/07/2023]
Abstract
Diabetic retinopathy (DR), the most frequent complication of diabetes mellitus, is the principal cause of acquired blindness worldwide. Although the roles of circRNAs have been extensively explored, the detailed physiological and pathological functions of circRNAs in DR are less understood. Here, we studied the biological effects of circ-ITCH in diabetic retinal pigment epithelial cells (RPEs) and explored the underlying mechanisms. As our results shown, the RNA expression of circ-ITCH was significantly lower in RPEs isolated from diabetic rats than they were in those isolated from normal rats. While diabetes induced an increase in MMP-2, MMP-9 and TNF-α in RPEs, circ-ITCH overexpression exerted an inhibitory on these increases and knockdown of circ-ITCH reversed the inhibitory. In addition, increased expression of miR-22 in RPEs correlated with diabetes and downregulation of circ-ITCH. Remarkably, in the presence of miR-22 mimics, the effects of circ-ITCH on the MMP-2 and MMP-9 were both antagonized. Collectively, our data supports a cellular signaling cascade in which circ-ITCH-inhibited miR-22 activity modulates the expression of MMP-2, MMP-9 and TNF-α in DR.
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16
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Zhang J, Gao C, Zhang J, Ye F. Circ_0010729 knockdown protects cardiomyocytes against hypoxic dysfunction via miR-370-3p/TRAF6 axis. EXCLI JOURNAL 2020; 19:1520-1532. [PMID: 33250684 PMCID: PMC7689242 DOI: 10.17179/excli2020-2809] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 10/21/2020] [Indexed: 01/14/2023]
Abstract
Few studies have addressed the mechanism by which circ_0010729 regulates hypoxia-induced cell injury in cardiovascular diseases. However, its role and its regulatory mechanism in myocardial infarction remain to be explored. Cell viability, cycle, apoptosis, and migration were analyzed using cell counting kit-8 assay, flow cytometry, caspase-3 activity assay kit and transwell assay, respectively. Tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) concentrations were examined by enzyme-linked immunosorbent assay. Glucose metabolism was calculated by detecting ATP production, glucose uptake and lactate production. Levels of circ_0010729, miR-370-3p and TNF Receptor Associated Factor 6 (TRAF6) were detected using quantitative real-time polymerase chain reaction or western blot. The direct interaction between circ_0010729 and TRAF6 or miR-370-3p was verified using dual-luciferase reporter assay and RNA immunoprecipitation assay. Under hypoxia condition, cardiomyocytes suffered from cell viability suppression, cell cycle arrest, cell apoptosis promotion, migration reduction, increase of inflammatory factor IL-6 and TNF-α, as well as glycolysis inhibition. Circ_0010729 expression was up-regulated in the cardiomyocytes at different hypoxia-exposed time points. Circ_0010729 knockdown protected cardiomyocytes against hypoxic dysfunction, while circ_0010729 overexpression showed inverse effects. MiR-370-3p was confirmed to directly bind to circ_0010729 or TRAF6. MiR-370-3p inhibition attenuated the protective effects of circ_0010729 knockdown on hypoxia-modulated cardiomyocyte dysfunction. MiR-370-3p restoration protected cardiomyocytes against hypoxic injury via targeting TRAF6. Besides, circ_0010729 indirectly regulated TRAF6 expression via miR-370-3p. This study demonstrated that circ_0010729 knockdown attenuated hypoxia-induced cardiomyocyte dysfunction via miR-370-3p/TRAF6 axis, indicating a potential therapeutic target for myocardial infarction.
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Affiliation(s)
- Jingjing Zhang
- Coronary Care Unit, Department of Cardiology, People's Hospital of Zhengzhou University, Zhengzhou City, Henan Procince, China
| | - Chuanyu Gao
- Department of Cardiology, People's Hospital of Zhengzhou University, Zhengzhou City, Henan Procince, China
| | - Jing Zhang
- Coronary Care Unit, Department of Cardiology, People's Hospital of Zhengzhou University, Zhengzhou City, Henan Procince, China
| | - Famin Ye
- Coronary Care Unit, Department of Cardiology, People's Hospital of Zhengzhou University, Zhengzhou City, Henan Procince, China
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17
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Lei D, Wang Y, Zhang L, Wang Z. Circ_0010729 regulates hypoxia-induced cardiomyocyte injuries by activating TRAF5 via sponging miR-27a-3p. Life Sci 2020; 262:118511. [PMID: 33010282 DOI: 10.1016/j.lfs.2020.118511] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/14/2020] [Accepted: 09/24/2020] [Indexed: 01/08/2023]
Abstract
Ischemic cardiomyopathy is a severe cardiovascular disease with high mortality. Circular RNAs (circRNAs) are widely regulated in diverse human diseases, including Ischemic cardiomyopathy. This study aimed to investigate a novel functional mechanism of circRNA circ_0010729 in hypoxia-induced cardiomyocyte injuries. Human cardiomyocytes (AC16) were exposed to hypoxia to mimic ischemic cardiomyopathy in vitro. Cell viability, apoptosis/necrosis and glycolysis progress, were determined using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay, flow cytometry assay and glycolysis stress test, respectively. Cell apoptosis was also assessed by the activity of cleaved caspase-3/7. The levels of glycolysis-related proteins and tumor necrosis factor receptor-associated factor 5 (TRAF5) were examined by western blot. The expression of circ_0010729 and miR-27a-3p was measured by real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR). The prediction about the targeted relationship was verified by dual-luciferase reporter assay, RNA immunoprecipitation (RIP) assay and RNA pull-down assay. As a result, hypoxia treatment inhibited cell viability, induced cell apoptosis and blocked glycolysis, however, these injuries were alleviated by circ_0010729 knockdown. MiR-27a-3p was targeted by circ_0010729, and miR-27a-3p inhibition reversed the role of circ_0010729 knockdown, leading to the deterioration of cell injuries. Further, TRAF5 was a target of miR-27a-3p, and circ_0010729 upregulated the expression of TRAF5 by sponging miR-27a-3p. MiR-27a-3p restoration enhanced cell viability, depleted cell apoptosis and promoted glycolysis of hypoxia-induced AC16 cells, while these effects were abolished by TRAF5 overexpression. In conclusion, circ_0010729 knockdown alleviated hypoxia-induced AC16 cell injuries by mediating the miR-27a-3p/TRAF5 axis.
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Affiliation(s)
- Dazhou Lei
- Department of Cardiology, Xinxiang Central Hospital, Xinxiang, Henan 453000, China
| | - Yan Wang
- Department of Cardiology, Xinxiang Central Hospital, Xinxiang, Henan 453000, China
| | - Luochao Zhang
- Department of Cardiology, Xinxiang Central Hospital, Xinxiang, Henan 453000, China
| | - Zhifang Wang
- Department of Cardiology, Xinxiang Central Hospital, Xinxiang, Henan 453000, China.
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18
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Zhang L, Zhang Y, Wang Y, Zhao Y, Ding H, Li P. Circular RNAs: Functions and Clinical Significance in Cardiovascular Disease. Front Cell Dev Biol 2020; 8:584051. [PMID: 33134301 PMCID: PMC7550538 DOI: 10.3389/fcell.2020.584051] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/09/2020] [Indexed: 01/01/2023] Open
Abstract
Cardiovascular disease (CVD) causes high morbidity and mortality worldwide. Accumulating research has indicated the possible roles played by circular RNAs (circRNAs) in the pathogenesis of CVD. CircRNAs are non-coding RNAs with covalently closed loop structures. CircRNAs can function by acting as miRNA sponges, RNA binding protein sponges, mRNA transcriptional regulators and templates for protein translation. The specific characteristics of circRNAs such as high stability, abundant distribution, and tissue- and developmental stage-specific expression make them potential biomarkers for the diagnosis and prognosis of CVD. In this paper, we systematically summarized the current knowledge regarding the biogenesis, biological properties and the action mechanisms of circRNAs, elucidated the roles played by circRNAs in the pathogenesis of CVD, and explored the diagnostic potential of circRNAs in CVD. With in-depth studies, an increasing number of molecular mechanisms underlying the participation of circRNAs in CVD may be elucidated, and the application of circRNAs in the clinical diagnosis and prevention of CVD may eventually be realized.
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Affiliation(s)
- Lei Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Yuan Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Yin Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Yanfang Zhao
- Institute of Biomedical Research, School for Life Science, Shandong University of Technology, Zibo, China
| | - Han Ding
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Peifeng Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
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19
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Zhu Y, Zou C, Jia Y, Zhang H, Ma X, Zhang J. Knockdown of circular RNA circMAT2B reduces oxygen-glucose deprivation-induced inflammatory injury in H9c2 cells through up-regulating miR-133. Cell Cycle 2020; 19:2622-2630. [PMID: 32897801 DOI: 10.1080/15384101.2020.1814025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Myocardial infarction (MI) is the main cause of morbidity and mortality. Reperfusion ways can cause damage to cardiomyocytes. CircMAT2B, a novel circRNA, takes positive roles in regulating glucose metabolism under hypoxia. Therefore, we aimed to explore the effects of circMAT2B on MI. Oxygen-glucose deprivation (OGD)-induced H9c2 cell model was employed to stimulate MI. Ex-circMAT2B, si-circMAT2B, miR-133 inhibitor and relative control were transfected into H9c2 cells. qRT-PCR was employed to examine levels of circMAT2B and miR-133. Cell activity, apoptosis, ROS generation and release of inflammatory factors were assessed by CCK-8, flow cytometry, ROS species assay kit and ELISA, respectively. Moreover, the expression of apoptosis-related and pathway-related factors was detected through western blot analysis. The results showed that circMAT2B expression was notably up-regulated by OGD treatment. Moreover, circMAT2B knockdown could effectively decrease OGD-induced the increasing of apoptosis, ROS generation and the expression of IL-1β, IL-6 and TNF-α. Besides, miR-133 was positively regulated by si-circMAT2B. CircMAT2B knockdown attenuated OGD-induced H9c2 cell damage and alleviated OGD-induced the inhibition of PI3K/AKT and Raf/MEK/ERK pathways through up-regulating miR-133. In brief, circMAT2B knockdown works as an inflammatory inhibitor in OGD-induced H9c2 cells inflammatory injury through up-regulating miR-133.
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Affiliation(s)
- Yanhui Zhu
- Department of Cardiac Surgery, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Chengwei Zou
- Department of Cardiac Surgery, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Yanting Jia
- Department of Cardiac Surgery, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Haizhou Zhang
- Department of Cardiac Surgery, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Xiaochun Ma
- Department of Cardiac Surgery, Shandong Provincial Hospital Affiliated to Shandong University , Jinan, Shandong, China
| | - Jun Zhang
- Department of Cardiac Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University , Jinan, Shandong, China
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20
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Liu X, Zhou C, Li Y, Deng Y, Lu W, Li J. Upregulation of circ-0000745 in acute lymphoblastic leukemia enhanced cell proliferation by activating ERK pathway. Gene 2020; 751:144726. [DOI: 10.1016/j.gene.2020.144726] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/16/2020] [Accepted: 04/29/2020] [Indexed: 02/07/2023]
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21
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Zhang S, Wang W, Wu X, Zhou X. Regulatory Roles of Circular RNAs in Coronary Artery Disease. MOLECULAR THERAPY-NUCLEIC ACIDS 2020; 21:172-179. [PMID: 32585625 PMCID: PMC7321795 DOI: 10.1016/j.omtn.2020.05.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 04/26/2020] [Accepted: 05/19/2020] [Indexed: 02/08/2023]
Abstract
Coronary artery disease (CAD) is a cardiac disorder caused by abnormal structure or function of the coronary artery, which leads to myocardial ischemia and hypoxia. CAD is a major cause of morbidity and mortality worldwide. Although there are currently effective drug therapies, there is a pressing need to find novel molecular therapeutic targets for CAD. The development of molecular biology technology has allowed the recognition of circular RNAs (circRNAs) as a novel class of noncoding RNAs that regulate gene function. The pathological roles of circRNAs in CAD have not, however, been comprehensively summarized. In this article, we review published research linking circRNAs to CAD and summarize the regulatory roles of circRNAs in the pathogenesis of coronary atherosclerosis, myocardial infarction, ischemia/reperfusion injury, and ischemic heart failure.
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Affiliation(s)
- Shuchen Zhang
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P.R. China
| | - Wenjing Wang
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P.R. China
| | - Xiaoguang Wu
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P.R. China
| | - Xiang Zhou
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P.R. China.
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22
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Xu M, Xie F, Tang X, Wang T, Wang S. Insights into the role of circular RNA in macrophage activation and fibrosis disease. Pharmacol Res 2020; 156:104777. [PMID: 32244027 DOI: 10.1016/j.phrs.2020.104777] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/04/2020] [Accepted: 03/23/2020] [Indexed: 02/07/2023]
Abstract
Circular RNAs (circRNAs) are single-stranded RNAs which form a covalent bond structure without a 5' cap or a 3' polyadenylated tail, which is deleted through back-splicing. The expression of circRNAs in highly divergent eukaryotes is abundant. With the development of high-throughput sequencing, the mysteries of circRNAs have gradually been revealed. Increased attention has been paid to determining their biological functions and whether their changed expression profiles are linked to disease progression. Functionally, circRNAs have been shown to act as miRNA sponges or nuclear transcription factor regulators, and to play a part in RNA splicing. Various types of circRNAs have been discovered to be differentially expressed under steady physiological and pathological conditions. Recently, several studies have focused on the roles of circRNAs in macrophages on inflammatory stimulation. In this study, we review the current advances in the understanding of circRNAs in macrophages under various pathological conditions, in particular during organ fibrosis, and summarize possible directions for future circRNA applications.
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Affiliation(s)
- Mengxue Xu
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China; Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Feiting Xie
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China; Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Xinyi Tang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.
| | - Tingting Wang
- Department of Laboratory Medicine, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi Children's Hospital, Wuxi, China.
| | - Shengjun Wang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China; Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China.
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