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Al-attar R, Jargstorf J, Romagnuolo R, Jouni M, Alibhai FJ, Lampe PD, Solan JL, Laflamme MA. Casein Kinase 1 Phosphomimetic Mutations Negatively Impact Connexin-43 Gap Junctions in Human Pluripotent Stem Cell-Derived Cardiomyocytes. Biomolecules 2024; 14:61. [PMID: 38254663 PMCID: PMC10813327 DOI: 10.3390/biom14010061] [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: 11/10/2023] [Revised: 12/14/2023] [Accepted: 12/25/2023] [Indexed: 01/24/2024] Open
Abstract
The transplantation of human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs) has shown promise in preclinical models of myocardial infarction, but graft myocardium exhibits incomplete host-graft electromechanical integration and a propensity for pro-arrhythmic behavior. Perhaps contributing to this situation, hPSC-CM grafts show low expression of connexin 43 (Cx43), the major gap junction (GJ) protein, in ventricular myocardia. We hypothesized that Cx43 expression and function could be rescued by engineering Cx43 in hPSC-CMs with a series of phosphatase-resistant mutations at three casein kinase 1 phosphorylation sites (Cx43-S3E) that have been previously reported to stabilize Cx43 GJs and reduce arrhythmias in transgenic mice. However, contrary to our predictions, transgenic Cx43-S3E hPSC-CMs exhibited reduced Cx43 expression relative to wild-type cells, both at baseline and following ischemic challenge. Cx43-S3E hPSC-CMs showed correspondingly slower conduction velocities, increased automaticity, and differential expression of other connexin isoforms and various genes involved in cardiac excitation-contraction coupling. Cx43-S3E hPSC-CMs also had phosphorylation marks associated with Cx43 GJ internalization, a finding that may account for their impaired GJ localization. Taken collectively, our data indicate that the Cx43-S3E mutation behaves differently in hPSC-CMs than in adult mouse ventricular myocytes and that multiple biological factors likely need to be addressed synchronously to ensure proper Cx43 expression, localization, and function.
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Affiliation(s)
- Rasha Al-attar
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; (R.A.-a.); (J.J.); (R.R.); (M.J.); (F.J.A.)
| | - Joseph Jargstorf
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; (R.A.-a.); (J.J.); (R.R.); (M.J.); (F.J.A.)
| | - Rocco Romagnuolo
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; (R.A.-a.); (J.J.); (R.R.); (M.J.); (F.J.A.)
| | - Mariam Jouni
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; (R.A.-a.); (J.J.); (R.R.); (M.J.); (F.J.A.)
| | - Faisal J. Alibhai
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; (R.A.-a.); (J.J.); (R.R.); (M.J.); (F.J.A.)
| | - Paul D. Lampe
- Translational Research Program, Public Health Sciences and Human Biology Divisions, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (P.D.L.); (J.L.S.)
| | - Joell L. Solan
- Translational Research Program, Public Health Sciences and Human Biology Divisions, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (P.D.L.); (J.L.S.)
| | - Michael A. Laflamme
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; (R.A.-a.); (J.J.); (R.R.); (M.J.); (F.J.A.)
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON M5G 1L7, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5G 1L7, Canada
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Lai G, Shen J, Hu Y, Yang F, Zhang C, Le D, Liu Q, Liang Y. LncRNA RNA ROR Aggravates Hypoxia/Reoxygenation-Induced Cardiomyocyte Ferroptosis by Targeting miR-769-5p/CBX7 Axis. Biochem Genet 2023:10.1007/s10528-023-10587-3. [PMID: 38157079 DOI: 10.1007/s10528-023-10587-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/06/2023] [Indexed: 01/03/2024]
Abstract
Ferroptosis is a new way of cell death which is reported to participate in the pathology of myocardial ischemia-reperfusion (MI/R) injury, but it's mechanism remains unclear. The present investigation is to study the emerging role of long non-coding RNA (lncRNA) regulator of reprogramming (ROR) in cardiomyocyte ferroptosis after hypoxia/reoxygenation (H/R) administration. RT-qPCR and/or Western blot methods were performed to examine the gene/or protein levels, and CCK-8, ELISA, and DCFH-DA staining determined the cellular viability and ferroptosis. Dual-luciferase and RNA immunoprecipitation were applied to verify molecular interaction. LncRNA ROR and miR-769-5p were overexpressed and reduced in blood samples from MI patients and H/R-treated AC16 cells, respectively. Mechanistically, lncROR sponged to miR-769-5p, thus upregulating CBX7 expression. Functional experiments presented that lncRNA ROR silence mitigated H/R-stimulated inflammatory damage, oxidative stress, and ferroptosis in AC16 cells, whereas these roles could be reversed by co-downregulation of miR-769-5p or co-overexpression of CBX7. These data uncovered that lncRNA ROR prevented against H/R-induced cardiomyocyte ferroptosis by modulating miR-769-5p/CBX7 signaling, emphasizing the therapeutic value of lncRNA ROR in MI/R injury.
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Affiliation(s)
- Guorong Lai
- Department of Pain Management, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, No.1 Minde Road, Nanchang, 330006, Jiangxi Province, People's Republic of China
| | - Jie Shen
- Department of Rehabilitation, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, Jiangxi Province, People's Republic of China
| | - Yanhui Hu
- Department of Anesthesiology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, Jiangxi Province, People's Republic of China
| | - Fan Yang
- Department of Pain Management, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, No.1 Minde Road, Nanchang, 330006, Jiangxi Province, People's Republic of China
| | - Chao Zhang
- Department of Pain Management, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, No.1 Minde Road, Nanchang, 330006, Jiangxi Province, People's Republic of China
| | - Dongsheng Le
- Department of Pain Management, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, No.1 Minde Road, Nanchang, 330006, Jiangxi Province, People's Republic of China
| | - Qin Liu
- Department of Anesthesiology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, Jiangxi Province, People's Republic of China
| | - Yingping Liang
- Department of Pain Management, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, No.1 Minde Road, Nanchang, 330006, Jiangxi Province, People's Republic of China.
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An L, Gao H, Zhong Y, Liu Y, Cao Y, Yi J, Huang X, Wen C, Tong R, Pan Z, Yan X, Liu M, Wang S, Wu H, Hu T. The potential roles of stress-induced phosphoprotein 1 and connexin 43 in rats with reperfusion arrhythmia. Immun Inflamm Dis 2023; 11:e852. [PMID: 37904692 PMCID: PMC10546868 DOI: 10.1002/iid3.852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 04/03/2023] [Accepted: 04/12/2023] [Indexed: 11/01/2023] Open
Abstract
OBJECTIVE Connexin 43 (Cx43) is a critical gene for maintaining myocardial homeostasis. Interestingly, Cx43 and stress-induced phosphoprotein 1 (STIP1) were recorded to be lowly expressed in ischemia/reperfusion (I/R). However, their impacts on reperfusion arrhythmia (RA) remain to be explored. Our study aimed to find out the related underlying mechanisms. METHODS After the establishment of an isolated heart model through Langendorff perfusion, the heart rate, conduction activation time, conduction velocity, and conduction direction of the left ventricle were evaluated, along with the apoptotic rate detection in the collected myocardial tissues. After the construction of a hypoxia/reoxygenation (H/R)-induced cellular model, cell apoptosis, intercellular communication, cell viability, and the content of reactive oxygen species, superoxide dismutase, malondialdehyde, and lactic dehydrogenase were measured. The expression of Cx43 and STIP1 was determined in both rat heart and cell models. The bindings of STIP3 and Cx43 to heat shock protein 90 (HSP90) and heat shock protein 70 (HSP70) were verified. RESULTS Relative to the corresponding controls, Cx43 and STIP1 were decreased in myocardial tissues of RA rats and H/R-stimulated H9C2 cells, where Cx43-binding HSP70 and HSP90 were respectively increased and decreased, and ubiquitination level of Cx43 was enhanced. STIP1 overexpression promoted protein expression of Cx43, intercellular communication, and cell viability, and reduced cell apoptosis and oxidative stress in H/R-stimulated H9C2 cells. CONCLUSION STIP1 promoted Cx43 expression to improve intercellular communication and reduce oxidative stress in H/R-stimulated H9C2 cells.
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Affiliation(s)
- Li An
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
- Department of AnaesthesiologyAffiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina
- Translational Medicine Research CenterGuizhou Medical UniversityGuiyangGuizhouChina
| | - Hong Gao
- Department of AnesthesiologyGuizhou Hospital of The 1st Affiliated Hospital, Sun Yat‐sen UniversityGuiyangGuizhouChina
| | - Yi Zhong
- Department of AnaesthesiologyAffiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina
| | - Yanqiu Liu
- Department of AnesthesiologyGuiyang Fourth People's HospitalGuiyangGuizhouChina
| | - Ying Cao
- Department of AnesthesiologyGuiyang Second People's HospitalGuiyangGuizhouChina
| | - Jing Yi
- Department of AnaesthesiologyAffiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina
| | - Xiang Huang
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Chunlei Wen
- Department of AnesthesiologyChildren's Hospital of Guiyang Maternal and Child Health HospitalGuiyangGuizhouChina
| | - Rui Tong
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Zhijun Pan
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Xu Yan
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Meiyan Liu
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Shengzhao Wang
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Hao Wu
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Tingju Hu
- Department of AnaesthesiologyAffiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina
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Jayawardena E, Medzikovic L, Ruffenach G, Eghbali M. Role of miRNA-1 and miRNA-21 in Acute Myocardial Ischemia-Reperfusion Injury and Their Potential as Therapeutic Strategy. Int J Mol Sci 2022; 23:ijms23031512. [PMID: 35163436 PMCID: PMC8836257 DOI: 10.3390/ijms23031512] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023] Open
Abstract
Coronary artery disease remains the leading cause of death. Acute myocardial infarction (MI) is characterized by decreased blood flow to the coronary arteries, resulting in cardiomyocytes death. The most effective strategy for treating an MI is early and rapid myocardial reperfusion, but restoring blood flow to the ischemic myocardium can induce further damage, known as ischemia-reperfusion (IR) injury. Novel therapeutic strategies are critical to limit myocardial IR injury and improve patient outcomes following reperfusion intervention. miRNAs are small non-coding RNA molecules that have been implicated in attenuating IR injury pathology in pre-clinical rodent models. In this review, we discuss the role of miR-1 and miR-21 in regulating myocardial apoptosis in ischemia-reperfusion injury in the whole heart as well as in different cardiac cell types with special emphasis on cardiomyocytes, fibroblasts, and immune cells. We also examine therapeutic potential of miR-1 and miR-21 in preclinical studies. More research is necessary to understand the cell-specific molecular principles of miRNAs in cardioprotection and application to acute myocardial IR injury.
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Błażejowska E, Urbanowicz T, Gąsecka A, Olasińska-Wiśniewska A, Jaguszewski MJ, Targoński R, Szarpak Ł, Filipiak KJ, Perek B, Jemielity M. Diagnostic and Prognostic Value of miRNAs after Coronary Artery Bypass Grafting: A Review. BIOLOGY 2021; 10:1350. [PMID: 34943265 PMCID: PMC8698870 DOI: 10.3390/biology10121350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 12/09/2021] [Accepted: 12/16/2021] [Indexed: 12/23/2022]
Abstract
MiRNAs are noncoding, 21-24 nucleotide-long RNA particles that control over 60% of genes. MiRNAs affect gene expression through binding to the 3'-untranslated region of messenger RNA (mRNA), thus inhibiting mRNA translation or inducing mRNA degradation. MiRNAs have been associated with various cardiovascular diseases, including heart failure, hypertension, left ventricular hypertrophy, or ischemic heart disease. In addition, miRNA expression alters during coronary artery bypass grafting (CABG) surgery, which could be used to predict perioperative outcomes. CABG is an operation in which complex coronary arteries stenosis is treated by bypassing atherosclerotic lesions with venous or arterial grafts. Despite a very low perioperative mortality rate and excellent long-term survival, CABG is associated with postoperative complications, including reperfusion injury, graft failure, atrial fibrillation and perioperative myocardial infarction. So far, no reliable diagnostic and prognostic tools to predict prognosis after CABG have been developed. Changes in the perioperative miRNA expression levels could improve the diagnosis of post-CABG myocardial infarction and atrial fibrillation and could be used to stratify risk after CABG. Herein, we describe the expression changes of different subtypes of miRNAs during CABG and review the diagnostic and prognostic utility of miRNAs in patients undergoing CABG.
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Affiliation(s)
- Ewelina Błażejowska
- 1st Chair and Department of Cardiology, Medical University of Warsaw, 02-091 Warsaw, Poland;
| | - Tomasz Urbanowicz
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (T.U.); (A.O.-W.); (B.P.); (M.J.)
| | - Aleksandra Gąsecka
- 1st Chair and Department of Cardiology, Medical University of Warsaw, 02-091 Warsaw, Poland;
| | - Anna Olasińska-Wiśniewska
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (T.U.); (A.O.-W.); (B.P.); (M.J.)
| | - Miłosz J. Jaguszewski
- 1st Department of Cardiology, Medical University of Gdansk, 80-211 Gdansk, Poland; (M.J.J.); (R.T.)
| | - Radosław Targoński
- 1st Department of Cardiology, Medical University of Gdansk, 80-211 Gdansk, Poland; (M.J.J.); (R.T.)
| | - Łukasz Szarpak
- Department of Clinical Sciences, Maria Sklodowska-Curie Medical Academy, 03-411 Warsaw, Poland; (Ł.S.); (K.J.F.)
| | - Krzysztof J. Filipiak
- Department of Clinical Sciences, Maria Sklodowska-Curie Medical Academy, 03-411 Warsaw, Poland; (Ł.S.); (K.J.F.)
| | - Bartłomiej Perek
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (T.U.); (A.O.-W.); (B.P.); (M.J.)
| | - Marek Jemielity
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (T.U.); (A.O.-W.); (B.P.); (M.J.)
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Wang L, Li Q, Diao J, Lin L, Wei J. MiR-23a Is Involved in Myocardial Ischemia/Reperfusion Injury by Directly Targeting CX43 and Regulating Mitophagy. Inflammation 2021; 44:1581-1591. [PMID: 33651309 DOI: 10.1007/s10753-021-01443-w] [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: 09/08/2020] [Revised: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 01/20/2023]
Abstract
Activation of CX43 signaling protects myocardial cells from myocardial ischemia/reperfusion (I/R) injury. However, the underlying mechanism remains unclear. MicroRNAs (miRNAs) are well known to play important roles in the progression of diverse diseases. Here, we first confirmed the expression profile of CX43 in rat heart tissues with I/R injury. Then, microRNAs (miRNAs) that target CX43 were predicted using miRDB, miRWalk, and TargetScan. The candidate miR-23a was selected, and its expression level in I/R samples was investigated. To determine the role of miR-23a, rat primary myocardial cells were transfected with miR-23a mimics after they were subjected to hypoxia-reoxygenation (H/R) injury. Transfection of miR-23a mimics stimulated mitophagy through the PINK1/Parkin pathway and downregulated the protein level of CX43. Treatment of miR-23a-transfected cells with NF-kB inhibitors completely abolished miR-23a-mediated mitophagy after H/R. Moreover, miR-23a transfection significantly suppressed CX43 expression and enhanced mitophagy in the model heart in vivo. Therefore, miR-23a plays a detrimental role in myocardial I/R injury by enhancing mitophagy and inhibiting CX43 mRNA.
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Affiliation(s)
- Lina Wang
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Qing Li
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Jiayu Diao
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Lin Lin
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Jin Wei
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710004, China.
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Liu B, Wang B, Zhang X, Lock R, Nash T, Vunjak-Novakovic G. Cell type-specific microRNA therapies for myocardial infarction. Sci Transl Med 2021; 13:13/580/eabd0914. [PMID: 33568517 DOI: 10.1126/scitranslmed.abd0914] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 01/19/2021] [Indexed: 12/13/2022]
Abstract
Current interventions fail to recover injured myocardium after infarction and prompt the need for development of cardioprotective strategies. Of increasing interest is the therapeutic use of microRNAs to control gene expression through specific targeting of mRNAs. In this Review, we discuss current microRNA-based therapeutic strategies, describing the outcomes and limitations of key microRNAs with a focus on target cell types and molecular pathways. Last, we offer a perspective on the outlook of microRNA therapies for myocardial infarction, highlighting the outstanding challenges and emerging strategies.
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Affiliation(s)
- Bohao Liu
- Department of Medicine, Columbia University, New York, NY 10032, USA.,Department of Biomedical Engineering, Columbia University, New York, NY 10032, USA
| | - Bryan Wang
- Department of Medicine, Columbia University, New York, NY 10032, USA.,Department of Biomedical Engineering, Columbia University, New York, NY 10032, USA
| | - Xiaokan Zhang
- Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Roberta Lock
- Department of Biomedical Engineering, Columbia University, New York, NY 10032, USA
| | - Trevor Nash
- Department of Medicine, Columbia University, New York, NY 10032, USA.,Department of Biomedical Engineering, Columbia University, New York, NY 10032, USA
| | - Gordana Vunjak-Novakovic
- Department of Medicine, Columbia University, New York, NY 10032, USA. .,Department of Biomedical Engineering, Columbia University, New York, NY 10032, USA
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MiR-32-3p Regulates Myocardial Injury Induced by Microembolism and Microvascular Obstruction by Targeting RNF13 to Regulate the Stability of Atherosclerotic Plaques. J Cardiovasc Transl Res 2021; 15:143-166. [PMID: 34185281 DOI: 10.1007/s12265-021-10150-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 06/16/2021] [Indexed: 10/21/2022]
Abstract
This study aimed to explore the molecular mechanism of myocardial protection. The effects of miR-32-3p and ring finger protein 13 (RNF13) on endoplasmic reticulum (ER) stress-induced apoptosis of A-10 cells and human umbilical vein endothelial cells (HUVEC) were detected using flow cytometry. The effects of miR-32-3p and phenylbutyric acid (PBA) on plaque instability and myocardial tissue injury in rats were investigated after establishment of arterial plaque model and embolization model and treatment with miR-32-3p-antagomir and PBA. RNF13, which was differentially expressed in myocardial infarction, was the direct target gene of miR-32-3p. MiR-32-3p inhibited RNF13 expression and targeted RNF13 to inhibit ER stress-induced cell apoptosis. Furthermore, inhibiting miR-32-3p expression induced arterial plaque instability by reducing survival, increasing pathological lesions in arterial tissue, up-regulating ER stress-related proteins, and regulating the expressions of apoptosis-related proteins in the model rats. However, PBA reversed the effects of miR-32-3p-antagomir on the model rats. MiR-32-3p regulates myocardial injury induced by micro-embolism and micro-vascular obstruction by targeting RNF13 to regulate the stability of atherosclerotic plaques.
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Yao W, Xu L, Jia X, Li S, Wei L. MicroRNA‑129 plays a protective role in sepsis‑induced acute lung injury through the suppression of pulmonary inflammation via the modulation of the TAK1/NF‑κB pathway. Int J Mol Med 2021; 48:139. [PMID: 34080641 PMCID: PMC8175065 DOI: 10.3892/ijmm.2021.4972] [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: 09/26/2020] [Accepted: 05/07/2021] [Indexed: 12/18/2022] Open
Abstract
Excessive inflammatory response and apoptosis play key roles in the pathogenic mechanisms of sepsis-induced acute lung injury (ALI); however, the molecular pathways linked to ALI pathogenesis remain unclear. Recently, microRNAs (miRNAs/miRs) have emerged as important regulators of inflammation and apoptosis in sepsis-induced ALI; however, the exact regulatory mechanisms of miRNAs remain poorly understood. In the present study, the gene microarray dataset GSE133733 obtained from the Gene Expression Omnibus database was analyzed and a total of 38 differentially regulated miRNAs were identified, including 17 upregulated miRNAs and 21 downregulated miRNAs, in mice with lipopolysaccharide (LPS)-induced ALI, in comparison to the normal control mice. miR-129 was found to be the most significant miRNA, among the identified miRNAs. The upregulation of miR-129 markedly alleviated LPS-induced lung injury, as indicated by the decrease in lung permeability in and the wet-to-dry lung weight ratio, as well as the improved survival rate of mice with ALI administered miR-129 mimic. Moreover, the upregulation of miR-129 reduced pulmonary inflammation and apoptosis in mice with ALI. Of note, transforming growth factor activated kinase-1 (TAK1), a well-known regulator of the nuclear factor-κB (NF-κB) pathway, was directly targeted by miR-129 in RAW 264.7 cells. More importantly, miR-129 upregulation impeded the LPS-induced activation of the TAK1/NF-κB signaling pathway, as illustrated by the suppression of the nuclear phosphorylated-p65, p-IκB-α and p-IKKβ expression levels. Collectively, the findings of the present study indicate that miR-129 protects mice against sepsis-induced ALI by suppressing pulmonary inflammation and apoptosis through the regulation of the TAK1/NF-κB signaling pathway. This introduces the basis for future research concerning the application of miR-129 and its targets for the treatment of ALI.
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Affiliation(s)
- Wenjian Yao
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, P.R. China
| | - Lei Xu
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, P.R. China
| | - Xiangbo Jia
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, P.R. China
| | - Saisai Li
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, P.R. China
| | - Li Wei
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, P.R. China
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10
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Xin C, Xia J, Liu Y, Zhang Y. MicroRNA-202-3p Targets Brain-Derived Neurotrophic Factor and Is Involved in Depression-Like Behaviors. Neuropsychiatr Dis Treat 2020; 16:1073-1083. [PMID: 32425535 PMCID: PMC7186893 DOI: 10.2147/ndt.s241136] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 03/17/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Brain-derived neurotrophic factor (BDNF) and microRNA (miRNA) play crucial roles in the etiology of depression. However, the molecular mechanisms underlying this disease are not fully understood. The primary objective of this study was to investigate the relationship between miR-202-3p and BDNF in a chronic unpredictable mild stress (CUMS) model. METHODS Depression model was established with chronic mild unpredictable mild stimulation (CUMS) combined with solitary feeding. The expression levels of miR-202-3p and BDNF in rat hippocampus were measured by qRT-PCR. The novelty inhibition feeding test (NSFT), sucrose preference test (SPT), and forced swimming test (FST) were used to evaluate the functions of miR-202-3p and BDNF. Target gene prediction and screening and luciferase reporter assay were used to verify the target of miR-202-3p. The expression levels of BNDF, CREB1 and p-CREB1 were detected by Western blot. RESULTS Upregulation of miR-202-3p was associated with decreased expression of BDNF in the hippocampus of the CUMS model. Antidepressant was observed when LV-BDNF or LV-si-miR-202-3p was injected into the hippocampus. In addition, in the rat hippocampus and cultured nerve cells, the expression levels of BDNF and cyclic AMP response element binding protein 1 (CREB1), which is a target gene of BDNF, were reduced after LV-miR-202-3p injection. Overexpression of miR-202-3p aggravated depressive behavior and decreased the expression levels of BDNF. Luciferase reporter assay also confirmed that BDNF was a target of miR-202-3p. CONCLUSION Silencing miR-202-3p can reduce the damage to hippocampal nerve in CUMS rats; the mechanism may be related to the upregulation of BNDF expression. miR-202-3p may be an effective target for the treatment of depression.
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Affiliation(s)
- Cuiyu Xin
- Department of Geriatric Psychiatry, Qingdao Mental Health Center, Qingdao City, Shandong Province266034, People’s Republic of China
| | - Jiejing Xia
- Department of Psychosis Ⅶ, Qingdao Mental Health Center, Qingdao City, Shandong Province266034, People’s Republic of China
| | - Yulan Liu
- Department of Psychosis Ⅴ, Qingdao Mental Health Center, Qingdao City, Shandong Province266034, People’s Republic of China
| | - Yongdong Zhang
- Department of Psychosis Ⅳ, Qingdao Mental Health Center, Qingdao City, Shandong Province266034, People’s Republic of China
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MiR-433 Regulates Myocardial Ischemia Reperfusion Injury by Targeting NDRG4 Via the PI3K/Akt Pathway. Shock 2020; 54:802-809. [PMID: 32187107 DOI: 10.1097/shk.0000000000001532] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND PURPOSE Myocardial ischemia reperfusion (IR) injury is a serious issue in the treatment of myocardial infarction. MiR-433 is upregulated in myocardial IR injury, but its specific effects remain unclear. In this study, we explored the effect and mechanism of miR-433 in myocardial IR injury. METHODS The expression of miR-433 was measured by qRT-PCR. H9c2 cells were transfected with miR-433 mimic and inhibitor after exposure to HR, respectively. Cell viability was detected by MTT. Cell apoptosis was measured by flow cytometry. Protein expression was assessed by western blot. Dual-luciferase reporter assay was performed to assess the target reaction between miR-433 and NDRG4. In vivo rat model of IR was used, and antagomiR-433 was injected to IR rats. RESULTS The qRT-PCR results showed that miR-433 expression increased in H9c2 cardiomyocytes after exposure to HR. Transfection with miR-433 inhibitor significantly increased cell viability, reduced LDH and apoptosis, downregulated Bax level, and upregulated Bcl-2 level. In contrast, the miR-433 mimic significantly augmented the HR-induced effects. Dual-luciferase reporter assay and western blot analysis suggested that miR-433 directly targeted NDRG4. NDRG4 silencing abrogated the protection of miR-433 inhibition on HR injury in H9c2 cells. It also reversed PI3K/Akt pathway activation that was induced by miR-433 inhibition. MiR-433 inhibition significantly decreased CK-MB and LDH serum level in IR rats. And NDRG4, p-PI3K, and p-Akt protein expression was elevated by antagomiR-433 injection in vivo. CONCLUSION MiR-433 regulated myocardial IR injury by targeting NDRG4 and modulating PI3K/Akt signal pathway.
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Liu Z, Liu Y, Zhu Y, Gong J. HOTAIR/miRNA-1/Cx43: A potential mechanism for treating myocardial ischemia-reperfusion injury. Int J Cardiol 2019; 308:11. [PMID: 31892421 DOI: 10.1016/j.ijcard.2019.12.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 12/10/2019] [Indexed: 10/25/2022]
Affiliation(s)
- Zhengbing Liu
- Department of Cardiology, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Yu Liu
- Department of Cardiology, Affiliated Drum Tower Hospital, Nanjing University School of Medicine, Nanjing 210008, China
| | - Yin Zhu
- Department of Cardiology, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - Jianbin Gong
- Department of Cardiology, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China.
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Jin Y, Zhou T, Feng Q, Yang J, Cao J, Xu X, Yang C. Inhibition of MicroRNA-206 Ameliorates Ischemia-Reperfusion Arrhythmia in a Mouse Model by Targeting Connexin43. J Cardiovasc Transl Res 2019; 13:584-592. [PMID: 31792806 DOI: 10.1007/s12265-019-09940-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 11/15/2019] [Indexed: 01/10/2023]
Abstract
Reperfusion arrhythmias (RA) are an important cause of sudden cardiac death and is closely associated with gap junction protein in the heart, connexin 43 (Cx43). This study is aimed at elucidating the molecular association between microRNA-206 (miR-206) and Cx43 in ischemia-reperfusion arrhythmia using experimental animal model. Our results showed that miR-206 inhibitor alleviated ischemia-reperfusion-induced arrhythmias, indicated by the lower extent of changes in heart rate (HR), PR interval, rate pressure product (RPP), and mean arterial pressure (MAP). miR-206 inhibitor also downregulated the serum creatine kinase isoenzyme (CKMB) and cardiac troponin I (cTnI) levels in mice under myocardial ischemia-reperfusion (IR) process. The knockdown of Cx43 inversed the protective effects of miR-206 inhibitor on cardiac arrhythmias. These results supported that inhibition of miR-206 ameliorates ischemia-reperfusion arrhythmia by targeting Cx43, and this miR-206/Cx43 axis could serve as a potential target for the management of ischemic-perfusion arrhythmia.
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Affiliation(s)
- Yan Jin
- Department of Cardiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi, 214002, Jiangsu, China
| | - Tianyi Zhou
- Department of Cardiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi, 214002, Jiangsu, China
| | - Qiuting Feng
- Department of Cardiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi, 214002, Jiangsu, China
| | - Jun Yang
- Department of Cardiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi, 214002, Jiangsu, China
| | - Jianing Cao
- Department of Cardiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi, 214002, Jiangsu, China
| | - Xin Xu
- Department of Cardiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi, 214002, Jiangsu, China
| | - Chengjian Yang
- Department of Cardiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi, 214002, Jiangsu, China.
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Pinchi E, Frati P, Aromatario M, Cipolloni L, Fabbri M, La Russa R, Maiese A, Neri M, Santurro A, Scopetti M, Viola RV, Turillazzi E, Fineschi V. miR-1, miR-499 and miR-208 are sensitive markers to diagnose sudden death due to early acute myocardial infarction. J Cell Mol Med 2019; 23:6005-6016. [PMID: 31240830 PMCID: PMC6714215 DOI: 10.1111/jcmm.14463] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 05/02/2019] [Accepted: 05/15/2019] [Indexed: 12/11/2022] Open
Abstract
MicroRNAs (miRNAs) are strongly up-regulated under pathological stress and in a wide range of diseases. In recent years, miRNAs are under investigation for their potential use as biomarkers in cardiovascular diseases. We investigate whether specific cardio-miRNAs are overexpressed in heart samples from subjects deceased for acute myocardial infarction (AMI) or sudden cardiac death (SCD), and whether miRNA could help differentiate between them. Forty four cases of death due to cardiovascular disease were selected, respectively, 19 cases categorized as AMI and 25 as SCD. Eighteen cases of traumatic death without pathological cardiac involvement were selected as control. Immunohistochemical investigation was performed for CD15, IL-15, Cx43, MCP-1, tryptase, troponin C and troponin I. Reverse transcription and quantitative real-time PCR were performed for miR-1, miR-133, miR-208 and miR-499. In AMI group, stronger immunoreaction for the CD15, IL-15 and MCP-1 antibodies was detectable compared with SCD and control. Cx43 showed a negative reaction with respect to the other groups. Real-time PCR results showed a down-regulation of all miRNAs in the AMI group compared with SCD and control. The selected miRNAs presented high accuracy in discriminating SCD from AMI (miR-1 and miR-499) and AMI from control (miR-208) representing a potential aid for both clinicians and pathologists for differential diagnosis.
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Affiliation(s)
- Enrica Pinchi
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
| | - Paola Frati
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
- IRCSS Neuromed Mediterranean Neurological InstitutePozzilliItaly
| | - Mariarosaria Aromatario
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
| | - Luigi Cipolloni
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
| | - Matteo Fabbri
- Department of Morphology, Experimental Medicine and SurgeryUniversity of FerraraFerraraItaly
| | - Raffaele La Russa
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
- IRCSS Neuromed Mediterranean Neurological InstitutePozzilliItaly
| | - Aniello Maiese
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
| | - Margherita Neri
- Department of Morphology, Experimental Medicine and SurgeryUniversity of FerraraFerraraItaly
| | - Alessandro Santurro
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
| | - Matteo Scopetti
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
| | - Rocco Valerio Viola
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
| | - Emanuela Turillazzi
- Institute of Legal Medicine, Department of Surgical, Medical and Molecular Pathology and Critical Care MedicineUniversity of PisaPisaItaly
| | - Vittorio Fineschi
- Department of Anatomical, Histological, Forensic and Orthopaedic SciencesSapienza University of RomeRomeItaly
- IRCSS Neuromed Mediterranean Neurological InstitutePozzilliItaly
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Liu DW, Zhang YN, Hu HJ, Zhang PQ, Cui W. Downregulation of microRNA‑199a‑5p attenuates hypoxia/reoxygenation‑induced cytotoxicity in cardiomyocytes by targeting the HIF‑1α‑GSK3β‑mPTP axis. Mol Med Rep 2019; 19:5335-5344. [PMID: 31059047 PMCID: PMC6522876 DOI: 10.3892/mmr.2019.10197] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 04/03/2019] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRs) have been identified as critical regulatory molecules in myocardial ischemia/reperfusion injury; however, the exact expression profile of miR-199a-5p in reperfusion injury and the underlying pathogenic mechanisms remain unclear. In the present study, it was revealed that miR-199a-5p expression was significantly increased in the plasma of patients with acute myocardial infarction and in a H9c2 cell model of oxygen-glucose deprivation and reperfusion (OGD/R) via reverse transcription-quantitative PCR. H9c2 cells were transfected with miR-199a-5p mimic or inhibitor, or short interfering RNA (siRNA) specific to hypoxia-inducible factor-1α (HIF-1α). MTS, lactate dehydrogenase (LDH), TUNEL staining and flow cytometry assays were performed to determine the proliferation, LDH activity, apoptosis and mitochondrial membrane potential (ΔΨm) of H9c2 cells, respectively. The overexpression of miR-199a-5p in the OGD/R cell model significantly decreased the viability and increased the lactate dehydrogenase leakage of cells; whereas knockdown of miR-199-5p induced the opposing effects. Additionally, inhibition of miR-199-5p significantly attenuated OGD/R-induced alterations to the mitochondrial transmembrane potential (ΔΨm) and increases in the apoptosis of cells. Furthermore, the overexpression or knockdown of miR-199a-5p decreased or increased the expression of HIF-1α and phosphorylation of glycogen synthase kinase 3β (GSK3β) in OGD/R-treated H9c2 cells. Additionally, siRNA-mediated downregulation of HIF-1α decreased phosphorylated (p)-GSK3β (Ser9) levels and reversed the protective effects of miR-199a-5p inhibition on OGD/R-injured H9c2 cells. Similarly, treatment with LiCl (a specific inhibitor of p-GSK3β) also attenuated the protective effects of miR-199a-5p knockdown on OGD/R-injured H9c2 cells. Mechanistic studies revealed that HIF-1α was a target of miR-199a-5p, and that HIF-1α downregulation suppressed the expression of p-GSK3β in OGD/R-injured H9c2 cells. Furthermore, an miR-199a-5p inhibitor increased the interaction between p-GSK3β and adenine nucleotide transferase (ANT), which was decreased by OGD/R. Additionally, miR-199a-5p inhibitor reduced the OGD/R-induced interaction between ANT and cyclophilin D (Cyp-D), potentially leading to the increased mitochondrial membrane potential in inhibitor-transfected OGD/R-injured H9c2 cells. Collectively, the present study identified a novel regulatory pathway in which the upregulation of miR-199a-5p reduced the expression of HIF-1α and p-GSK3β, and potentially suppresses the interaction between p-GSK3β and ANT, thus promoting the interaction between ANT and Cyp-D and potentially inducing cytotoxicity in OGD/R-injured H9c2 cells.
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Affiliation(s)
- Da-Wei Liu
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
| | - Ya-Nan Zhang
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
| | - Hai-Juan Hu
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
| | - Pu-Qiang Zhang
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
| | - Wei Cui
- Department of Cardiology, Second Hospital of Hebei Medical University and Hebei Institute of Cardiovascular Research, Shijiazhuang, Hebei 050011, P.R. China
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Li WC, Gao H, Gao J, Wang ZJ. Antiarrhythmic effect of sevoflurane as an additive to HTK solution on reperfusion arrhythmias induced by hypothermia and ischaemia is associated with the phosphorylation of connexin 43 at serine 368. BMC Anesthesiol 2019; 19:5. [PMID: 30621602 PMCID: PMC6325883 DOI: 10.1186/s12871-018-0656-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/29/2018] [Indexed: 12/22/2022] Open
Abstract
Background Reperfusion ventricular arrhythmia (RA) associated with hypothermic ischaemic storage is increasingly recognized as a substantial contributor to adverse consequences after heart transplantation. Ischemia- or hypothermia-induced gap junction (GJ) remodelling is closely linked to RA. Reducing GJ remodelling contributes to RA attenuation and is important in heart transplantation. However, sevoflurane has an antiarrhythmic effect associated with the connexin 43 (Cx43) protein that has not yet been fully established. Methods Hearts were divided into two groups according to a random number table: all hearts were arrested by an infusion of histidine-tryptophan-ketoglutarate (HTK) solution (4 °C) followed by (1) storage in HTK solution (4 °C) alone for 6 h (n = 8, Control group) or (2) storage in HTK solution supplemented with sevoflurane (2.5%) (4 °C) for 6 h (n = 8, Sevo-HTK group). First, the total Cx43 level and the phosphorylation of Cx43 at Ser368 (Cx43-pS368) were assessed by Western blotting, and the distribution of Cx43 was assessed by immunohistochemistry. Second, programmed electrical stimulation (PES) and monophasic action potential (MAP) recording were used to analyse the MAP duration (MAPD), conduction velocity (CV) and transmural repolarization dispersion (TDR). In addition, haematoxylin and eosin (HE) and terminal deoxynucleotidyl transferase-dUTP nick end labelling (TUNEL) staining were individually used to investigate the degree of myocardial pathological damage and cell apoptosis. Finally, bipolar electrograms were used to record the graft re-beating time and monitor RA during reperfusion for 15 to 30 min. Results Sevo-HTK solution relatively increased the total Cx43 (P < 0.01) and Cx43-pS368 (P < 0.01) levels and prevented Cx43 redistribution (P < 0.05) and CV slowing (P < 0.001) but did not change TDR (P > 0.05). Additionally, the Cx43-pS368/total Cx43 ratio (P>0.05) was similar in the two groups. However, with Sevo-HTK solution, the graft re-beating times were shortened, myocardial pathological damage was ameliorated, and the number of apoptotic cells was markedly decreased. Conclusion The reduction in hypothermia and ischaemia-induced reperfusion arrhythmias by the addition of sevoflurane to HTK solution may be related to the phosphorylation of Cx43 at serine 368.
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Affiliation(s)
- Wei Chao Li
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Hong Gao
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China.
| | - Ju Gao
- Department of Anaesthesiology, North Jiangsu People's Hospital, Yangzhou University, Yangzhou, China
| | - Zi Jun Wang
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
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MicroRNA miR-24-3p Reduces Apoptosis and Regulates Keap1-Nrf2 Pathway in Mouse Cardiomyocytes Responding to Ischemia/Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:7042105. [PMID: 30622671 PMCID: PMC6304907 DOI: 10.1155/2018/7042105] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 09/13/2018] [Accepted: 10/11/2018] [Indexed: 12/18/2022]
Abstract
In recent years, microRNAs (miRNAs) have received increasing attention for their role in ischemia/reperfusion injury (I/RI), and many miRNAs have been demonstrated to play a very important role in cardiac I/RI. The miRNA miR-24-3p is a tumor suppressor that regulates multiple tumors; however, it remains unclear whether the expression level of miR-24-3p is altered in cardiac cells under I/RI. In this study, we used mouse primary cardiomyocytes and the H9C2 cardiomyocyte cell line to perform in vitro stimulated ischemia/reperfusion (SI/R) and then detected miR-24-3p expression level using quantitative real-time PCR (qRT-PCR). We discovered that the expression of miR-24-3p was significantly increased in cardiomyocytes following SI/R, and that the miR-24-3p level was inversely correlated to the ischemia marker HIF-1a. Furthermore, we transfected cardiomyocytes with miR-24-3p mimic or inhibitor to explore the role of miR-24-3p in cardiomyocyte ischemia/reperfusion injury in vitro. We performed flow cytometry to detect the apoptotic rate of H9C2 cardiomyocytes and found that the transfection of miR-24-3p mimic resulted in the decrease of the apoptosis rate of cardiomyocytes after SI/R, whereas the transfection of miR-24-3p inhibitor increased the number of apoptotic cardiomyocytes. These data suggest that the overexpression of miR-24-3p could reduce in vitro myocardial cell apoptosis induced by I/R injury. Finally, we applied the dual luciferase reporter gene system to verify whether miR-24-3p targets the Keap1 gene, and found that the luciferase signal intensity from a vector carrying the Keap1 wild-type reporter gene was significantly reduced after transfection with miR-24-3p mimic. The Keap1 protein level was also reduced following the transfection of miR-24-3p. The results from this study suggest a novel function of miR-24-3p in protecting cardiomyocytes from ischemia/reperfusion injury by the activation of the Nrf2-Keap1 pathway.
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Shu L, Zhang W, Huang G, Huang C, Zhu X, Su G, Xu J. Troxerutin attenuates myocardial cell apoptosis following myocardial ischemia-reperfusion injury through inhibition of miR-146a-5p expression. J Cell Physiol 2018; 234:9274-9282. [PMID: 30417352 DOI: 10.1002/jcp.27607] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 09/21/2018] [Indexed: 01/20/2023]
Abstract
The aim of the current study was to investigate the effects and the underlying mechanisms of troxerutin on myocardial cell apoptosis during ischemia-reperfusion (I/R) injury. Hypoxia/reoxygenation (H/R) model in neonatal rat cardiomyocytes, and I/R model in rats, were established following troxerutin preconditioning. The quantitative real-time polymerase chain reaction analysis was performed to examine the messenger RNA miR-146a-5p expression in cardiomyocytes and myocardial tissues. Hemodynamic parameters and serum creatine kinase, lactate dehydrogenase, tumor necrosis factor-α, and interleukin-10 were evaluated. Infarct size was examined by 2,3,5-triphenyltetrazolium chloride staining. Besides, myocardial apoptosis was detected by terminal deoxynucleotidyl transferase (dUTP) nick end labeling (TUNEL) assay. Western blot analysis was performed to determine the protein levels of caspase-3, Bax, and Bcl-2. The results showed that, troxerutin decreased rat cardiomyocyte apoptosis during H/R injury. Furthermore, the antiapoptotic effect of troxerutin against I/R injury was mediated by miR-146a-5p downregulation. In vivo experiments suggested that troxerutin alleviated myocardial I/R injury in rats via inhibition of miR-146a-5p. In conclusion, troxerutin exerted cardioprotective effects during I/R injury by downregulating miR-146a-5p.
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Affiliation(s)
- Liliang Shu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wanzhe Zhang
- Department of Nephrology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Gongcheng Huang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chen Huang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaohua Zhu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Gang Su
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jing Xu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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De Majo F, De Windt LJ. RNA therapeutics for heart disease. Biochem Pharmacol 2018; 155:468-478. [DOI: 10.1016/j.bcp.2018.07.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 07/25/2018] [Indexed: 12/20/2022]
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蒋 国, 刘 亚, 赵 婉, 王 道, 董 淑, 童 旭. [Effect of gap junction modulation on antitumor effects of adriamycin in estrogen receptor-positive breast cancer cells]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:780-786. [PMID: 33168517 PMCID: PMC6765543 DOI: 10.3969/j.issn.1673-4254.2018.07.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To observe the effect of functional modulation of gap junctions (GJ) on the antitumor effect of adriamycin in breast cancer cells positive for estrogen receptor (ER). METHODS The inhibitory effect of 0 to 24.0 μmol/L adriamycin on the surviving fraction of ER-positive human breast cancer MCF-7 cells and ER-negative MDA-MB-231 cells was assessed with MTT assay; Western blotting and immunofluorescence assay were used to detect the expressions of Cx43 total protein and membrane protein in the cells. A parachute assay was used to evaluate the function of the GJ in MCF-7 cells. The cytotoxic effect of adriamycin was observed in the cells treated with retinoic acid (RA) for enhancing GJ function, in cells treated with oleamide and 18-α- glycyrrhizic acid (18-α-ga) for inhibiting GJ function, and also in cells transfected with Cx43siRNA for Cx43 knockdown. RESULTS ER-positive MCF-7 cells expressed a significantly higher level of Cx43 with stronger GJ function than ER-negative MDA- MB-231 cells. Adriamycin significantly inhibited the proliferation of MCF-7 cells (P < 0.01), and RA treatment further increased the cytotoxicity of adriamycin (P < 0.01) while oleamide and 18-α-GA obviously attenuated the cytotoxicity of adriamycin (P < 0.01). In the cells with Cx43 knockdown, the expressions of total Cx43 protein and Cx43 on the membrane were significantly reduced, the function of GJ was attenuated, and the cytotoxicity of adriamycin was significantly decreased (P < 0.01). CONCLUSIONS ER-positive breast cancer cells have stronger Cx43 expressions and GJ function than the ERnegative cells. The cytotoxicity of adriamycin against the breast cancer cells can be strengthened by enhancing GJ function and attenuated by inhibiting GJ function. Cx43 silencing inhibits the function of GJ to lower the cytotoxicity of adriamycin in human breast cancer MCF-7 cells.
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Affiliation(s)
- 国君 蒋
- />蚌埠医学院药学院药理教研室,安徽 蚌埠 233030Pharmacology department of Bengbu Medical college, Bengbu 233030, China
| | - 亚明 刘
- />蚌埠医学院药学院药理教研室,安徽 蚌埠 233030Pharmacology department of Bengbu Medical college, Bengbu 233030, China
| | - 婉晨 赵
- />蚌埠医学院药学院药理教研室,安徽 蚌埠 233030Pharmacology department of Bengbu Medical college, Bengbu 233030, China
| | - 道鑫 王
- />蚌埠医学院药学院药理教研室,安徽 蚌埠 233030Pharmacology department of Bengbu Medical college, Bengbu 233030, China
| | - 淑英 董
- />蚌埠医学院药学院药理教研室,安徽 蚌埠 233030Pharmacology department of Bengbu Medical college, Bengbu 233030, China
| | - 旭辉 童
- />蚌埠医学院药学院药理教研室,安徽 蚌埠 233030Pharmacology department of Bengbu Medical college, Bengbu 233030, China
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Wang Y, Li J, Xuan L, Liu Y, Shao L, Ge H, Gu J, Wei C, Zhao M. Astragalus Root dry extract restores connexin43 expression by targeting miR-1 in viral myocarditis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 46:32-38. [PMID: 30097120 DOI: 10.1016/j.phymed.2018.06.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 06/12/2018] [Accepted: 06/19/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Viral myocarditis is defined as viral infection of myocardial tissue leading to impaired heart function and heart failure. Accumulating evidences have shown that arrhythmia is one of important complicating diseases of viral myocarditis causing increased mortality and morbidity. There are no effective treatment for the viral infection and complicating arrhythmia. PURPOSE This study investigated the effect and mechanism of Astragalus Root dry extract (ARDE) on arrhythmia induced by CVB3 in mice. METHODS The mice and HL-1 cells were treated with CVB3 and ARDE. Reciprocal regulation of Cx43 and miR-1 were observed in the CVB3 infected mouse myocardium and culture HL-1 cells. RESULTS CVB3 IP injection increased immune cell infiltration in mouse left ventricle and caused irregular arrhythmia. ARDE treatment prevented the increase of immune cell infiltration and arrhythmia. Overexpression of miR-1 significantly inhibited both endogenous Cx43 expression and Cx43 3'UTR luciferase activity in HL-1 cells. Mutation of census binding site of +1586-1593 bp not +465-472 bp in Cx43 3'UTR luciferase resulted in abolishment of miR-1 inhibitory effects in HL-1 cells. Loss-of- function of miR-1 restored CVB3-induced Cx43 expression reduction in cultured HL-1 cells. The presence of ARDE attenuated the augmented miR-1 induced by CVB3 infection in vivo and in vitro. CONCLUSION This study identified that CVB3 infection reduced Cx43 expression by elevating miR-1 level in mouse viral myocarditis. For the first time, ARDE was shown to prevent arrhythmia, and rescue CVB3-induced endogenous Cx43 expression by regulating miR-1 level.
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Affiliation(s)
- Yu Wang
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China; Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, PR China
| | - Jian Li
- Intensive Care Unit, No.2 Affiliated Hospital of Jilin University, ChangChun, Jilin Province, PR China - the emergency and critical care department of the second hospital of Jilin University, Chuangchun, Jilin province, China
| | - Liying Xuan
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China; Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, PR China
| | - Yongfeng Liu
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China; Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, PR China
| | - Liqun Shao
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China; First Clinical Medical of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China
| | - Hongyan Ge
- First Clinical Medical of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China
| | - Junyi Gu
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China; First Clinical Medical of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China
| | - Chengxi Wei
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China; Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, PR China.
| | - Ming Zhao
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China; First Clinical Medical of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China; Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, PR China; Affiliated Hospital of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, PR China.
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Ong SB, Katwadi K, Kwek XY, Ismail NI, Chinda K, Ong SG, Hausenloy DJ. Non-coding RNAs as therapeutic targets for preventing myocardial ischemia-reperfusion injury. Expert Opin Ther Targets 2018; 22:247-261. [DOI: 10.1080/14728222.2018.1439015] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sang-Bing Ong
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Khairunnisa Katwadi
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Xiu-Yi Kwek
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Nur Izzah Ismail
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Kroekkiat Chinda
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
- Biomedical Research Unit in Cardiovascular Sciences (BRUCS), Naresuan University, Phitsanulok, Thailand
| | - Sang-Ging Ong
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Derek J Hausenloy
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
- National Heart Research Institute of Singapore, National Heart CentreSingapore, Singapore
- The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College London, London, UK
- Yong Loo Lin School of Medicine, National University Singapore, Singapore, Singapore
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