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Xu T, Zhang Y, Liao G, Xuan H, Yin J, Bao J, Liu Y, Li D. Luteolin Pretreatment Ameliorates Myocardial Ischemia/Reperfusion Injury by lncRNA-JPX/miR-146b Axis. Anal Cell Pathol (Amst) 2023; 2023:4500810. [PMID: 38077523 PMCID: PMC10710365 DOI: 10.1155/2023/4500810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/03/2023] [Accepted: 11/13/2023] [Indexed: 12/18/2023] Open
Abstract
Background In the present study, we aimed to find out whether luteolin (Lut) pretreatment could ameliorate myocardial ischemia/reperfusion (I/R) injury by regulating the lncRNA just proximal to XIST (JPX)/microRNA-146b (miR-146b) axis. Methods We established the models in vitro (HL-1 cells) and in vivo (C57BL/6J mice) to certify the protection mechanism of Lut pretreatment on myocardial I/R injury. Dual luciferase reporter gene assay was utilized for validating that JPX could bind to miR-146b. JPX and miR-146b expression levels were determined by RT-qPCR. Western blot was utilized to examine apoptosis-related protein expression levels, including cleaved caspase-9, caspase-9, cleaved caspase-3, caspase-3, Bcl-2, Bax, and BAG-1. Apoptosis was analyzed by Annexin V-APC/7-AAD dualstaining, Hoechst 33342 staining, as well as flow cytometry. Animal echocardiography was used to measure cardiac function (ejection fraction (EF) and fractional shortening (FS) indicators). Results miR-146b was demonstrated to bind and recognize the JPX sequence site by dual luciferase reporter gene assay. The expression level of miR-146b was corroborated to be enhanced by H/R using RT-qPCR (P < 0.001 vs. Con). Moreover, JPX could reduce the expression of miR-146b, whereas inhibiting JPX could reverse the alteration (P < 0.001 vs. H/R, respectively). Western blot analysis demonstrated that Lut pretreatment increased BAG-1 expression level and Bcl-2/Bax ratio, but diminished the ratio of cleaved caspase 9/caspase 9 and cleaved caspase 3/caspase 3 (P < 0.001 vs. H/R, respectively). Moreover, the cell apoptosis change trend, measured by Annexin V-APC/7-AAD dualstaining, Hoechst 33342 staining, along with flow cytometry, was consistent with that of apoptosis-related proteins. Furthermore, pretreatment with Lut improved cardiac function (EF and FS) (P < 0.001 vs. I/R, respectively), as indicated in animal echocardiography. Conclusion Our results demonstrated that in vitro and in vivo, Lut pretreatment inhibited apoptosis via the JPX/miR-146b axis, ultimately improving myocardial I/R injury.
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Affiliation(s)
- Tongda Xu
- Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, China
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yuanyuan Zhang
- Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, China
| | - Gege Liao
- Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, China
| | - Haochen Xuan
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Jie Yin
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Jieli Bao
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yang Liu
- Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, China
| | - Dongye Li
- Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, China
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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Wu L, Gao B, Shen M, Wei L, Li Z, Zhuang W. lncRNA LENGA sponges miR-378 to promote myocardial fibrosis in atrial fibrillation. Open Med (Wars) 2023; 18:20230831. [PMID: 38025533 PMCID: PMC10656758 DOI: 10.1515/med-2023-0831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 09/07/2023] [Accepted: 09/29/2023] [Indexed: 12/01/2023] Open
Abstract
miR-378 is known to suppress myocardial fibrosis, while its upstream regulators have not been identified. lncRNA LENGA is a recently identified lncRNA in cancer biology. We observed the altered expression of LENGA in atrial fibrillation (AF) patients and predicted its interaction with miR-378. We then explored the interaction between LENGA and miR-378 in AF. Angiotensin-II (Ang-II)-induced human atrial cardiac fibroblasts and human atrial muscle tissues were collected and the expression of LENGA and miR-378 was determined by RT-qPCR. The interaction between LENGA and miR-378 was analyzed through bioinformatics analysis and confirmed by RNA pulldown assay. Cell proliferation and collagen production were analyzed through in vitro assay to analyze the role of LENGA and miR-378 in MF. AF patients showed increased expression of LENGA and deceased expression of miR-378 compared to the sinus rhythm group. LENGA and miR-378 interacted with each other, while they are not closely correlated with each other. Overexpression assay showed that LENGA and miR-378 overexpression failed to affect each other's expression. LENGA promoted collagen production and proliferation of Ang-II-induced atrial fibroblasts, while miR-378 played opposite roles. Moreover, LENGA suppressed the function of miR-378. Therefore, LENGA may sponge miR-378 to promote MF in AF.
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Affiliation(s)
- Liting Wu
- Medical Laboratory, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, 200438, China
| | - Bingjing Gao
- Medical Laboratory, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, 200438, China
| | - Mengyuan Shen
- Medical Laboratory, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, 200438, China
| | - Lu Wei
- Medical Laboratory, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, 200438, China
| | - Zhumeng Li
- Medical Laboratory, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, 200438, China
| | - Wenfang Zhuang
- Medical Laboratory, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, 999 Shiguang Road, Yangpu DistrictShanghai, 200438, China
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Schuchardt EL, Miyamoto SD, Crombleholme T, Karimpour-Fard A, Korst A, Neltner B, Howley LW, Cuneo B, Sucharov CC. Amniotic Fluid microRNA in Severe Twin-Twin Transfusion Syndrome Cardiomyopathy-Identification of Differences and Predicting Demise. J Cardiovasc Dev Dis 2022; 9:37. [PMID: 35200691 PMCID: PMC8878714 DOI: 10.3390/jcdd9020037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/10/2022] [Accepted: 01/18/2022] [Indexed: 12/15/2022] Open
Abstract
Twin-twin transfusion syndrome (TTTS) is a rare but serious cause of fetal cardiomyopathy with poorly understood pathophysiology and challenging prognostication. This study sought a nonbiased, comprehensive assessment of amniotic fluid (AF) microRNAs from TTTS pregnancies and associations of these miRNAs with clinical characteristics. For the discovery cohort, AF from ten fetuses with severe TTTS cardiomyopathy were selected and compared to ten normal singleton AF. Array panels assessing 384 microRNAs were performed on the discovery cohort and controls. Using a stringent q < 0.0025, arrays identified 32 miRNAs with differential expression. Top three microRNAs were miR-99b, miR-370 and miR-375. Forty distinct TTTS subjects were selected for a validation cohort. RT-PCR targeted six differentially-expressed microRNAs in the discovery and validation cohorts. Expression differences by array were confirmed by RT-PCR with high fidelity. The ability of these miRNAs to predict clinical differences, such as cardiac findings and later demise, was evaluated on TTTS subjects. Down-regulation of miRNA-127-3p, miRNA-375-3p and miRNA-886 were associated with demise. Our results indicate AF microRNAs have potential as a diagnostic and prognostic biomarker in TTTS. The top microRNAs have previously demonstrated roles in angiogenesis, cardiomyocyte stress response and hypertrophy. Further studies of the mechanism of actions and potential targets is warranted.
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Affiliation(s)
- Eleanor L. Schuchardt
- Department of Pediatrics, Colorado Fetal Care Center, Children’s Hospital Colorado, School of Medicine, University of Colorado, Aurora, CO 80045, USA; (E.L.S.); (S.D.M.); (B.C.)
- Department of Pediatrics, Rady Children’s Hospital, School of Medicine, University of California San Diego, San Diego, CA 92123, USA
| | - Shelley D. Miyamoto
- Department of Pediatrics, Colorado Fetal Care Center, Children’s Hospital Colorado, School of Medicine, University of Colorado, Aurora, CO 80045, USA; (E.L.S.); (S.D.M.); (B.C.)
| | - Timothy Crombleholme
- Fetal Care Center Dallas, Medical City Children’s Hospital, Dallas, TX 75230, USA;
| | - Anis Karimpour-Fard
- Department of Pharmacology, School of Medicine, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA;
| | - Armin Korst
- Research Institute, Children’s Hospital Colorado, Aurora, CO 80045, USA;
| | - Bonnie Neltner
- Division of Cardiology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA;
| | - Lisa W. Howley
- Division of Cardiology, Department of Pediatrics, The Children’s Heart Clinic, Children’s Minnesota, Minneapolis, MN 55404, USA;
| | - Bettina Cuneo
- Department of Pediatrics, Colorado Fetal Care Center, Children’s Hospital Colorado, School of Medicine, University of Colorado, Aurora, CO 80045, USA; (E.L.S.); (S.D.M.); (B.C.)
| | - Carmen C. Sucharov
- Division of Cardiology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA;
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Ye Q, Liu Q, Ma X, Bai S, Chen P, Zhao Y, Bai C, Liu Y, Liu K, Xin M, Zeng C, Zhao C, Yao Y, Ma Y, Wang J. MicroRNA-146b-5p promotes atrial fibrosis in atrial fibrillation by repressing TIMP4. J Cell Mol Med 2021; 25:10543-10553. [PMID: 34643044 PMCID: PMC8581305 DOI: 10.1111/jcmm.16985] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 09/17/2021] [Accepted: 09/23/2021] [Indexed: 01/22/2023] Open
Abstract
Alteration of tissue inhibitors of matrix metalloproteinases (TIMP)/matrix metalloproteinases (MMP) associated with collagen upregulation has an important role in sustained atrial fibrillation (AF). The expression of miR-146b-5p, whose the targeted gene is TIMPs, is upregulated in atrial cardiomyocytes during AF. This study was to determine whether miR-146b-5p could regulate the gene expression of TIMP4 and the contribution of miRNA to atrial fibrosis in AF. Collagen synthesis was observed after miR-146b-5p transfection in human induced pluripotent stem cell-derived atrial cardiomyocytes (hiPSC-aCMs)-fibroblast co-culture cellular model in vitro. Furthermore, a myocardial infarction (MI) mouse model was used to confirm the protective effect of miR-146b-5p downregulation on atrial fibrosis. The expression level of miR-146b-5p was upregulated, while the expression level of TIMP4 was downregulated in the fibrotic atrium of canine with AF. miR-146b-5p transfection in hiPSC-aCMs-fibroblast co-culture cellular model increased collagen synthesis by regulating TIMP4/MMP9 mediated extracellular matrix proteins synthesis. The inhibition of miR-146b-5p expression reduced the phenotypes of cardiac fibrosis in the MI mouse model. Fibrotic marker MMP9, TGFB1 and COL1A1 were significantly downregulated, while TIMP4 was significantly upregulated (at both mRNA and protein levels) by miR-146b-5p inhibition in cardiomyocytes of MI heart. We concluded that collagen fibres were accumulated in extracellular space on miR-146b-5p overexpressed co-culture cellular model. Moreover, the cardiac fibrosis induced by MI was attenuated in antagomiR-146 treated mice by increasing the expression of TIMP4, which indicated that the inhibition of miR-146b-5p might become an effective therapeutic approach for preventing atrial fibrosis.
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Affiliation(s)
- Qing Ye
- Department of Cardiac SurgeryBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Quan Liu
- Department of Cardiothoracic SurgeryBenq HospitalAffiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Xiaolong Ma
- Department of Cardiac SurgeryBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Shuyun Bai
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
| | - Pengfei Chen
- Department of Cardiac SurgeryFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yichen Zhao
- Department of Cardiac SurgeryBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Chen Bai
- Department of Cardiac SurgeryBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Yang Liu
- Department of Cardiac SurgeryBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Kemin Liu
- Department of Cardiac SurgeryBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Meng Xin
- Center for Cardiac Intensive CareBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Caiwu Zeng
- Center for Cardiac Intensive CareBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Cheng Zhao
- Department of Cardiac SurgeryBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Yan Yao
- Department of CardiologyBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
| | - Yue Ma
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
- Medical School of University of Chinese Academy of SciencesBeijingChina
- Guangzhou Regenerative Medicine and Health Guangdong LaboratoryGuangzhouChina
| | - Jiangang Wang
- Department of Cardiac SurgeryBeijing Anzhen HospitalCapital Medical UniversityBeijingChina
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Abstract
RNase L is generally thought to play a key role in antiviral defenses. Although RNase L protein and mRNA are known to be highly expressed in myocardial tissue, there are few studies of the potential functions of RNase L in myocardial tissue. In this study, we tested the hypothesis that RNase L may be involved in the pathological process of cardiac ischemic injury. RNase L-overexpressing and RNase L knockdown H9c2 cell lines were subjected to the oxygen and glucose deprivation (OGD) model, and RNase L knockout mice were subjected to acute myocardial infarction surgical procedures to investigate the function of RNase L in ischemic heart injury. OGD induced abnormal aggregation of double-stranded RNA in H9c2 cells, activated RNase L within 6 h of OGD initiation, and mediated apoptosis via the c-Jun N-terminal kinase pathway. In addition, RNase L knockout mice were more tolerant of myocardial infarction, and this knockout protected heart function and prevented pathological ventricular remodeling. Notably, both in in vivo and in vitro experiments, RNase L was gradually diminished during prolonged ischemic injury, which we speculate is an adaptive protective response serving to reduce myocardial ischemic damage. These results suggest that RNase L plays a role in the pathological process of cardiac acute ischemic injury. It is first activated by ischemic injury, causing cardiomyocyte death, but gradually diminishes to protect the heart from further damage.
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Tantawy M, Chekka LM, Huang Y, Garrett TJ, Singh S, Shah CP, Cornell RF, Baz RC, Fradley MG, Waheed N, DeRemer DL, Yuan L, Langaee T, March K, Pepine CJ, Moreb JS, Gong Y. Lactate Dehydrogenase B and Pyruvate Oxidation Pathway Associated With Carfilzomib-Related Cardiotoxicity in Multiple Myeloma Patients: Result of a Multi-Omics Integrative Analysis. Front Cardiovasc Med 2021; 8:645122. [PMID: 33996940 PMCID: PMC8116486 DOI: 10.3389/fcvm.2021.645122] [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: 12/22/2020] [Accepted: 03/02/2021] [Indexed: 01/20/2023] Open
Abstract
Multiple myeloma (MM) is the second most frequent hematologic cancer in the United States. Carfilzomib (CFZ), an irreversible proteasome inhibitor being used to treat relapsed and refractory MM, has been associated with cardiotoxicity, including heart failure. We hypothesized that a multi-omics approach integrating data from different omics would provide insights into the mechanisms of CFZ-related cardiovascular adverse events (CVAEs). Plasma samples were collected from 13 MM patients treated with CFZ (including 7 with CVAEs and 6 with no CVAEs) at the University of Florida Health Cancer Center. These samples were evaluated in global metabolomic profiling, global proteomic profiling, and microRNA (miRNA) profiling. Integrative pathway analysis was performed to identify genes and pathways differentially expressed between patients with and without CVAEs. The proteomics analysis identified the up-regulation of lactate dehydrogenase B (LDHB) [fold change (FC) = 8.2, p = 0.01] in patients who experienced CVAEs. The metabolomics analysis identified lower plasma abundance of pyruvate (FC = 0.16, p = 0.0004) and higher abundance of lactate (FC = 2.4, p = 0.0001) in patients with CVAEs. Differential expression analysis of miRNAs profiling identified mir-146b to be up-regulatein (FC = 14, p = 0.046) in patients with CVAE. Pathway analysis suggested that the pyruvate fermentation to lactate pathway is associated with CFZ-CVAEs. In this pilot multi-omics integrative analysis, we observed the down-regulation of pyruvate and up-regulation of LDHB among patients who experienced CVAEs, suggesting the importance of the pyruvate oxidation pathway associated with mitochondrial dysfunction. Validation and further investigation in a larger independent cohort are warranted to better understand the mechanisms of CFZ-CVAEs.
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Affiliation(s)
- Marwa Tantawy
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL, United States
| | - Lakshmi Manasa Chekka
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL, United States
| | - Yimei Huang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL, United States
| | - Timothy J Garrett
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Sonal Singh
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL, United States
| | - Chintan P Shah
- Division of Hematology and Oncology, Department of Medicine, University of Florida, Gainesville, FL, United States
| | - Robert F Cornell
- Division of Hematology and Oncology, Vanderbilt University Medical Center, Preston Research Building, Nashville, TN, United States
| | - Rachid C Baz
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, United States
| | - Michael G Fradley
- Cardio-Oncology Center of Excellence, Division of Cardiology, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
| | - Nida Waheed
- Department of Internal Medicine, College of Medicine, University of Florida, Gainesville, FL, United States
| | | | - Lihui Yuan
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, United States
| | - Taimour Langaee
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL, United States.,Center for Pharmacogenomics and Precision Medicine, College of Pharmacy, University of Florida, Gainesville, FL, United States
| | - Keith March
- Division of Cardiovascular Medicine, Department of Medicine and Center for Regenerative Medicine, University of Florida, Gainesville, FL, United States
| | - Carl J Pepine
- Division of Cardiovascular Medicine, Department of Medicine and Center for Regenerative Medicine, University of Florida, Gainesville, FL, United States
| | - Jan S Moreb
- Novant Health Forsyth Medical Center, Hematology, Transplantation, and Cellular Therapy Division, Winston-Salem, NC, United States
| | - Yan Gong
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL, United States.,UF Health Cancer Center, Gainesville, FL, United States.,Center for Pharmacogenomics and Precision Medicine, College of Pharmacy, University of Florida, Gainesville, FL, United States
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Feng D, Christensen JT, Yetman AT, Lindsey ML, Singh AB, Salomon JD. The microbiome’s relationship with congenital heart disease: more than a gut feeling. JOURNAL OF CONGENITAL CARDIOLOGY 2021. [DOI: 10.1186/s40949-021-00060-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AbstractPatients with congenital heart disease (CHD) are at risk for developing intestinal dysbiosis and intestinal epithelial barrier dysfunction due to abnormal gut perfusion or hypoxemia in the context of low cardiac output or cyanosis. Intestinal dysbiosis may contribute to systemic inflammation thereby worsening clinical outcomes in this patient population. Despite significant advances in the management and survival of patients with CHD, morbidity remains significant and questions have arisen as to the role of the microbiome in the inflammatory process. Intestinal dysbiosis and barrier dysfunction experienced in this patient population are increasingly implicated in critical illness. This review highlights possible CHD-microbiome interactions, illustrates underlying signaling mechanisms, and discusses future directions and therapeutic translation of the basic research.
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Dysbiosis and Intestinal Barrier Dysfunction in Pediatric Congenital Heart Disease Is Exacerbated Following Cardiopulmonary Bypass. JACC Basic Transl Sci 2021; 6:311-327. [PMID: 33997519 PMCID: PMC8093480 DOI: 10.1016/j.jacbts.2020.12.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 12/12/2022]
Abstract
There are no data evaluating the microbiome in congenital heart disease following cardiopulmonary bypass. The authors evaluated patients with congenital heart disease undergoing cardiopulmonary bypass and noncardiac patients undergoing surgery without bypass. Patients with congenital heart disease had differences in baseline microbiome compared with control subjects, and this was exacerbated following surgery with bypass. Markers of barrier dysfunction were similar for both groups at baseline, and surgery with bypass induced significant intestinal barrier dysfunction compared with control subjects. This study offers novel evidence of alterations of the microbiome in congenital heart disease and exacerbation along with intestinal barrier dysfunction following cardiopulmonary bypass.
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Key Words
- ANOVA, analysis of variance
- CHD, congenital heart disease
- CPB, cardiopulmonary bypass
- DNA, deoxyribonucleic acid
- EBD, epithelial barrier dysfunction
- FABP2, fatty acid binding protein 2
- LCOS, low–cardiac output syndrome
- NPO, nil per os
- OTU, operational taxonomic unit
- PGE2, prostaglandin E2
- RA, relative abundance
- bacterial interactions
- cardiovascular disease
- enteric bacterial microflora
- intestinal barrier function
- intestinal microbiology
- rRNA, ribosomal ribonucleic acid
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Sui M, Jiang X, Sun H, Liu C, Fan Y. Berberine Ameliorates Hepatic Insulin Resistance by Regulating microRNA-146b/SIRT1 Pathway. Diabetes Metab Syndr Obes 2021; 14:2525-2537. [PMID: 34113144 PMCID: PMC8187038 DOI: 10.2147/dmso.s313068] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 05/22/2021] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE Hepatic insulin resistance is a major initiating factor for type 2 diabetes mellitus. In previous study, Gegen Qinlian Decoction containing berberine could enhance hepatic insulin sensitivity by SIRT1-dependent deacetylation of FOXO1. However, it is not clear whether berberine also can improve hepatic insulin sensitivity by SIRT1/FOXO1 pathway. This study aimed to evaluate the efficacy of berberine for improving hepatic insulin resistance and the possible molecular mechanisms involved. METHODS In vitro, HepG2 cells were induced with palmitic acid, and glycogen synthesis was examined. In vivo, a high-fat diet (HFD)-fed mouse model was established, and metabolic parameters were assessed. The expressions of miR-146b and sirtuin 1 (SIRT1) in liver were also examined. The relationship between miR-146b and SIRT1 was examined by the dual-luciferase reporter gene assay. RESULTS Serum biochemical parameters, such as glucose and HOMA-IR index, were increased in HFD mice; miR-146b and SIRT1 were abnormally expressed in HFD mice and palmitic acid-treated HepG2 cells. Interestingly, berberine reduced body weight and caused a significant improvement in glucose tolerance and HOMA-IR index without altering food intake in mice. Overexpression of miR-146b abolished the protective effect of berberine on palmitic acid-induced impaired glycogen synthesis in HepG2 cells. Luciferase assay showed that miR-146b directly targeted SIRT1. CONCLUSION The present findings suggest that berberine could attenuate hepatic insulin resistance through the miR-146b/SIRT1 pathway, which may represent a potential therapeutic target for the prevention and treatment of metabolic diseases, particularly diabetes.
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Affiliation(s)
- Miao Sui
- Department of Endocrinology, Xuzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Xuzhou, People’s Republic of China
| | - Xiaofei Jiang
- Department of Endocrinology, Xuzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Xuzhou, People’s Republic of China
| | - Hongping Sun
- Endocrine and Diabetes Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, People’s Republic of China
| | - Chao Liu
- Endocrine and Diabetes Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, People’s Republic of China
| | - Yaofu Fan
- Endocrine and Diabetes Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, People’s Republic of China
- Correspondence: Yaofu Fan; Chao Liu Endocrine and Diabetes Center, Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing University of Traditional Chinese Medicine, No. 100 Shizi Street, Hongshan Road, Nanjing, Jiangsu, 210008, People’s Republic of ChinaTel +86-25-8560 8733 Email ;
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Tong L, Tang C, Cai C, Guan X. Upregulation of the microRNA rno-miR-146b-5p may be involved in the development of intestinal injury through inhibition of Kruppel-like factor 4 in intestinal sepsis. Bioengineered 2020; 11:1334-1349. [PMID: 33200654 PMCID: PMC8291882 DOI: 10.1080/21655979.2020.1851476] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Regulatory mechanisms of microRNAs (miRNAs) in the development of intestinal sepsis are unclear. This study investigated the role of rno-miR-146b-5p in sepsis-induced intestinal injury. A rat sepsis model was created using the cecal ligation and puncture method. The expression profiles of miRNA and mRNA in sepsis rats were examined using miRNA and mRNA sequencing; rno-miR-146b was selected for further investigation. The mimics and inhibitors of rno-miR-146b-5p were transfected into IEC-6 cells and then with or without lipopolysaccharide (LPS) treatment, and the expressions of Kruppel-like factor 4 (Klf4) and Cyclin D2 (Ccnd2) were assessed by quantitative real-time transcriptase-polymerase chain reaction (qRT-PCR) and western blotting. Next, cell counting kit-8 assay was used to detect cell viability, and scratch wound healing assay was used to assess cell migration. In sepsis rat model, crypt cell proliferation was inhibited and crypt cell apoptosis was increased. Compared with the sham control, results of miRNA and mRNA sequencing showed that there were 17 miRNAs and 1617 mRNAs that were upregulated and 123 miRNAs and 1917 mRNAs that were downregulated in the sepsis model group. The network diagrams and qRT-PCR validation indicated that rno-miR-146b-5p may inhibit the expression of Klf4. By adjusting the expression of rno-miR-146b-5p in IEC-6 cells with or without LPS treatment, we found that increased expression of rno-miR-146b-5p inhibited cell proliferation and migration and inhibited the expression of Ccnd2. rno-miR-146b-5p may play a vital role in the development of sepsis intestinal injury through targeting Klf4 expression and affecting promoter activity of Ccnd2.
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Affiliation(s)
- Li Tong
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University , Guangzhou, China
| | - Chaoxia Tang
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University , Guangzhou, China
| | - Changjie Cai
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University , Guangzhou, China
| | - Xiangdong Guan
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University , Guangzhou, China
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Li Y, Li X, Wang L, Han N, Yin G. miR-375-3p contributes to hypoxia-induced apoptosis by targeting forkhead box P1 (FOXP1) and Bcl2 like protein 2 (Bcl2l2) in rat cardiomyocyte h9c2 cells. Biotechnol Lett 2020; 43:353-367. [PMID: 33128129 DOI: 10.1007/s10529-020-03013-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 09/29/2020] [Indexed: 12/23/2022]
Abstract
miRNAs have been pointed to play critical role in the development of congenital heart disease (CHD). miRNA-375-3p (miR-375-3p) was involved in cardiac dysfunction and cardiogenesis. However, no prior study had established a therapeutic role of miR-375-3p in CHD. We intended to investigate the effect and mechanism of miR-375-3p on apoptosis in hypoxic cardiomyocytes in vitro. Expression of miR-375-3p, forkhead box P1 (FOXP1) and Bcl2 like protein 2 (Bcl2l2) was detected using real-time quantitative PCR and western blot. Apoptosis was measured with MTT assay, flow cytometry and caspase-3 activity assay. The potential target binding between miR-375-3p and FOXP1/Bcl2l2 was predicted on DianaTools, and was validated by luciferase reporter assay and RNA pull-down assay. As a result, miR-375-3p was upregulated and FOXP1/Bcl2l2 was downregulated in maternal serum of women with fetal CHD and hypoxia-induced rat cardiomyocyte h9c2 cells. Hypoxia induced apoptosis rate elevation, caspase-3 activity promotion and viability inhibition in h9c2 cells; overexpression of miR-375-3p promoted, whereas knockdown of miR-375-3p antagonized hypoxia-induced effects in h9c2 cells. In addition, miR-375-3p was validated to negatively regulate FOXP1 and Bcl2l2 expression through target binding, and silencing of FOXP1 and Bcl2l2 could independently abate the anti-apoptosis role of miR-375-3p knockdown in hypoxic h9c2 cells. Collectively, blocking miR-375-3p suppressed hypoxia-evoked apoptosis of cardiomyocytes by targeting and upregulating FOXP1 and Bcl2l2. Our results might suggest maternal serum miR-375-3p as a potential biomarker for prenatal detection of fetal CHD.
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Affiliation(s)
- Yuefan Li
- Department of Cardiology, Qingdao Central Hospital, No. 127, Siliu South Road, Qingdao, 266042, Shandong, China
| | - Xiaofei Li
- Department of Acupuncture, Qingdao Central Hospital, Qingdao, 266042, Shandong, China
| | - Ling Wang
- Department of Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, 266003, Shandong, China
| | - Na Han
- Department of Cardiology, Qingdao Central Hospital, No. 127, Siliu South Road, Qingdao, 266042, Shandong, China
| | - Gang Yin
- Department of Cardiology, Qingdao Central Hospital, No. 127, Siliu South Road, Qingdao, 266042, Shandong, China.
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12
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Liao Y, Li H, Cao H, Dong Y, Gao L, Liu Z, Ge J, Zhu H. Therapeutic silencing miR-146b-5p improves cardiac remodeling in a porcine model of myocardial infarction by modulating the wound reparative phenotype. Protein Cell 2020; 12:194-212. [PMID: 32845445 PMCID: PMC7895884 DOI: 10.1007/s13238-020-00750-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/29/2020] [Indexed: 12/18/2022] Open
Abstract
Fibrotic remodeling is an adverse consequence of immune response-driven phenotypic modulation of cardiac cells following myocardial infarction (MI). MicroRNA-146b (miR-146b) is an active regulator of immunomodulation, but its function in the cardiac inflammatory cascade and its clinical implication in fibrotic remodeling following MI remain largely unknown. Herein, miR-146b-5p was found to be upregulated in the infarcted myocardium of mice and the serum of myocardial ischemia patients. Gain- and loss-of-function experiments demonstrated that miR-146b-5p was a hypoxia-induced regulator that governed the pro-fibrotic phenotype transition of cardiac cells. Overexpression of miR-146b-5p activated fibroblast proliferation, migration, and fibroblast-to-myofibroblast transition, impaired endothelial cell function and stress survival, and disturbed macrophage paracrine signaling. Interestingly, the opposite effects were observed when miR-146b-5p expression was inhibited. Luciferase assays and rescue studies demonstrated that the miR-146b-5p target genes mediating the above phenotypic modulations included interleukin 1 receptor associated kinase 1 (IRAK1) and carcinoembryonic antigen related cell adhesion molecule 1 (CEACAM1). Local delivery of a miR-146b-5p antagomir significantly reduced fibrosis and cell death, and upregulated capillary and reparative macrophages in the infarcted myocardium to restore cardiac remodeling and function in both mouse and porcine MI models. Local inhibition of miR-146b-5p may represent a novel therapeutic approach to treat cardiac fibrotic remodeling and dysfunction following MI.
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Affiliation(s)
- Yiteng Liao
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.,Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Hao Li
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.,Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Hao Cao
- Department of Cardiovascular Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Yun Dong
- Department of Ultrasound in Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Lei Gao
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Zhongmin Liu
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China. .,Department of Cardiovascular Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
| | - Junbo Ge
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital of Fudan University, Shanghai, 200032, China.
| | - Hongming Zhu
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
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13
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Mimura I. Are women more susceptible to renal dysfunction than men? Kidney Int 2020; 96:1275-1277. [PMID: 31759485 DOI: 10.1016/j.kint.2019.08.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 10/25/2022]
Abstract
Is there any difference in sensitivity to kidney function between men and women? Paterson et al. have focused on sex differences in chronic kidney disease. Surprisingly, their experimental results show that only one microRNA, miR-146b-5p, affected the susceptibility of renocardiac pathology. They generated miR-146b knockout rats and found that miR-146b-/- females developed exacerbated renal hypertrophy and fibrosis and had less cardiac remodeling. Although miR-146b-5p has been reported to be upregulated in various types of cancers, this article reveals the novel role of miR-146b in the kidney.
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Affiliation(s)
- Imari Mimura
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan.
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14
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Hadj-Moussa H, Storey KB. The OxymiR response to oxygen limitation: a comparative microRNA perspective. J Exp Biol 2020; 223:223/10/jeb204594. [DOI: 10.1242/jeb.204594] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
ABSTRACT
From squid at the bottom of the ocean to humans at the top of mountains, animals have adapted to diverse oxygen-limited environments. Surviving these challenging conditions requires global metabolic reorganization that is orchestrated, in part, by microRNAs that can rapidly and reversibly target all biological functions. Herein, we review the involvement of microRNAs in natural models of anoxia and hypoxia tolerance, with a focus on the involvement of oxygen-responsive microRNAs (OxymiRs) in coordinating the metabolic rate depression that allows animals to tolerate reduced oxygen levels. We begin by discussing animals that experience acute or chronic periods of oxygen deprivation at the ocean's oxygen minimum zone and go on to consider more elevated environments, up to mountain plateaus over 3500 m above sea level. We highlight the commonalities and differences between OxymiR responses of over 20 diverse animal species, including invertebrates and vertebrates. This is followed by a discussion of the OxymiR adaptations, and maladaptations, present in hypoxic high-altitude environments where animals, including humans, do not enter hypometabolic states in response to hypoxia. Comparing the OxymiR responses of evolutionarily disparate animals from diverse environments allows us to identify species-specific and convergent microRNA responses, such as miR-210 regulation. However, it also sheds light on the lack of a single unified response to oxygen limitation. Characterizing OxymiRs will help us to understand their protective roles and raises the question of whether they can be exploited to alleviate the pathogenesis of ischemic insults and boost recovery. This Review takes a comparative approach to addressing such possibilities.
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Affiliation(s)
- Hanane Hadj-Moussa
- Institute of Biochemistry and Department of Biology, Carleton University, Ottawa, ON, Canada, K1S 5B6
| | - Kenneth B. Storey
- Institute of Biochemistry and Department of Biology, Carleton University, Ottawa, ON, Canada, K1S 5B6
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15
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Kanda P, Benavente-Babace A, Parent S, Connor M, Soucy N, Steeves A, Lu A, Cober ND, Courtman D, Variola F, Alarcon EI, Liang W, Stewart DJ, Godin M, Davis DR. Deterministic paracrine repair of injured myocardium using microfluidic-based cocooning of heart explant-derived cells. Biomaterials 2020; 247:120010. [PMID: 32259654 DOI: 10.1016/j.biomaterials.2020.120010] [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] [Received: 07/22/2019] [Revised: 03/17/2020] [Accepted: 03/26/2020] [Indexed: 02/08/2023]
Abstract
While encapsulation of cells within protective nanoporous gel cocoons increases cell retention and pro-survival integrin signaling, the influence of cocoon size and intra-capsular cell-cell interactions on therapeutic repair are unknown. Here, we employ a microfluidic platform to dissect the impact of cocoon size and intracapsular cell number on the regenerative potential of transplanted heart explant-derived cells. Deterministic increases in cocoon size boosted the proportion of multicellular aggregates within cocoons, reduced vascular clearance of transplanted cells and enhanced stimulation of endogenous repair. The latter being attributable to cell-cell stimulation of cytokine and extracellular vesicle production while also broadening of the miRNA cargo within extracellular vesicles. Thus, by tuning cocoon size and cell occupancy, the paracrine signature and retention of transplanted cells can be enhanced to promote paracrine stimulation of endogenous tissue repair.
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Affiliation(s)
- Pushpinder Kanda
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, K1Y4W7, Canada
| | | | - Sandrine Parent
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, K1Y4W7, Canada
| | - Michie Connor
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, K1Y4W7, Canada
| | - Nicholas Soucy
- Ottawa-Carleton Institute for Biomedical Engineering, Ottawa, K1N6N5, Canada
| | - Alexander Steeves
- Department of Mechanical Engineering, University of Ottawa, K1N6N5, Canada
| | - Aizhu Lu
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, K1Y4W7, Canada
| | - Nicholas David Cober
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, K1H8M5, Canada
| | - David Courtman
- Ottawa Hospital Research Institute, Division of Regenerative Medicine, Department of Medicine, University of Ottawa, Ottawa, K1H8L6, Canada
| | - Fabio Variola
- Department of Mechanical Engineering, University of Ottawa, K1N6N5, Canada
| | - Emilio I Alarcon
- University of Ottawa Heart Institute, Division of Cardiac Surgery, Department of Medicine, University of Ottawa, Ottawa, K1Y4W7, Canada; Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, K1H8M5, Canada
| | - Wenbin Liang
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, K1Y4W7, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, K1H8M5, Canada
| | - Duncan J Stewart
- Ottawa Hospital Research Institute, Division of Regenerative Medicine, Department of Medicine, University of Ottawa, Ottawa, K1H8L6, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, K1H8M5, Canada
| | - Michel Godin
- Department of Physics, University of Ottawa, K1N6N5, Canada; Ottawa-Carleton Institute for Biomedical Engineering, Ottawa, K1N6N5, Canada; Department of Mechanical Engineering, University of Ottawa, K1N6N5, Canada
| | - Darryl R Davis
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, K1Y4W7, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, K1H8M5, Canada.
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16
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Extracellular Vesicle lincRNA-p21 Expression in Tumor-Draining Pulmonary Vein Defines Prognosis in NSCLC and Modulates Endothelial Cell Behavior. Cancers (Basel) 2020; 12:cancers12030734. [PMID: 32244977 PMCID: PMC7140053 DOI: 10.3390/cancers12030734] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/12/2020] [Accepted: 03/18/2020] [Indexed: 12/21/2022] Open
Abstract
Hypoxia-induced upregulation of lincRNA-p21 in tumor tissue was previously shown by our group to be related to poor prognosis in resected non-small cell lung cancer (NSCLC) patients. In the present study, we have evaluated the presence of lincRNA-p21 in extracellular vesicles (EVs) from NSCLC patients and assessed its potential as a prognostic biomarker. High EV lincRNA-p21 levels in blood from the tumor-draining vein were associated with shorter time to relapse and shorter overall survival. Moreover, the multivariate analysis identified high lincRNA-p21 levels as an independent prognostic marker. In addition, lincRNA-p21 was overexpressed in H23 and HCC44 NSCLC cell lines and their derived EVs under hypoxic conditions. Functional assays using human umbilical vein endothelial cells (HUVECs) showed that tumor-derived EVs enriched in lincRNA-p21 affected endothelial cells by promoting tube formation and enhancing tumor cell adhesion to endothelial cells. Additionally, the analysis of selected EV microRNAs related to angiogenesis and metastasis showed that the microRNAs correlated with EV lincRNA-p21 levels in both patients and cell lines. Finally, EV co-culture with HUVEC cells increased the expression of microRNAs and genes related to endothelial cell activation. In conclusion, EV lincRNA-p21 acts as a novel prognosis marker in resected NSCLC patients, promoting angiogenesis and metastasis.
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17
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Zhang H, Zhang Q, Liu Y, Xue T. miR-146a and miR-146b predict increased restenosis and rapid angiographic stenotic progression risk in coronary heart disease patients who underwent percutaneous coronary intervention. Ir J Med Sci 2019; 189:467-474. [PMID: 31680203 DOI: 10.1007/s11845-019-02101-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 09/12/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE This study aimed to investigate the potential of microRNA (miR)-146a and miR-146b for predicting restenosis and rapid angiographic stenotic progression (RASP) risk in coronary heart disease (CHD) patients who underwent percutaneous coronary intervention (PCI) with drug-eluting stent (DES) implantation. METHODS In total, 255 CHD patients who underwent PCI with DES were enrolled, and their baseline, procedural, and post procedure characteristics were recorded. Plasma samples were obtained before PCI treatment to detect the miR-146a and miR-146b expression by reverse transcription quantitative polymerase chain reaction. Besides, restenosis and RASP occurrences were assessed based on coronary angiograms at 12 months after the surgery. RESULTS The occurrence rates of restenosis and RASP were 9.0% and 32.9% respectively in CHD patients who underwent PCI with DES. Furthermore, miR-146a and miR-146b expressions were elevated in CHD patients with restenosis compared with CHD patients without restenosis. Subsequent receiver operating characteristic (ROC) curve analysis showed that miR-146a (area under the curve (AUC), 0.674; 95% CI, 0.567-0.781) and miR-146b (AUC, 0.801; 95% CI, 0.729-0.875) could predict increased restenosis risk, among which miR-146b numerically exhibited a better predictive value for higher restenosis risk. Besides, miR-146a and miR-146b expressions were raised in CHD patients with RASP compared with CHD patients without RASP. Followed ROC curve analysis illuminated that miR-146a (AUC, 0.772; 95% CI, 0.714-0.829) and miR-146b (AUC, 0.706; 95% CI, 0.644-0.769) presented similar values in predicting elevated RASP risk. CONCLUSION miR-146a and miR-146b predict increased restenosis and RASP risk in CHD patients who underwent PCI with DES.
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Affiliation(s)
- Huayong Zhang
- Department of Cardiology, The Second People's Hospital of Liaocheng, Linqing, Shandong, China
| | - Qing Zhang
- Department of Cardiology, The Second People's Hospital of Liaocheng, Linqing, Shandong, China
| | - Yingchao Liu
- Department of Clinical Laboratory, The Second People's Hospital of Liaocheng, Linqing, Shandong, China
| | - Tao Xue
- Department of Cardiology, Linqing People's Hospital, 317 Yaokou Street, Xinhua Road, Linqing, 252600, Shandong, People's Republic of China.
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18
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Chouvarine P, Legchenko E, Geldner J, Riehle C, Hansmann G. Hypoxia drives cardiac miRNAs and inflammation in the right and left ventricle. J Mol Med (Berl) 2019; 97:1427-1438. [PMID: 31338525 DOI: 10.1007/s00109-019-01817-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 06/20/2019] [Accepted: 07/02/2019] [Indexed: 12/16/2022]
Abstract
Alveolar and myocardial hypoxia may be causes or sequelae of pulmonary hypertension (PH) and heart failure. We hypothesized that hypoxia initiates specific epigenetic and transcriptional, pro-inflammatory programs in the right ventricle (RV) and left ventricle (LV). We performed an expression screen of 750 miRNAs by qPCR arrays in the murine RV and LV in normoxia (Nx) and hypoxia (Hx; 10% O2 for 18 h, 48 h, and 5d). Additional validation included single qPCR analysis of miRNA and pro-inflammatory transcripts in murine and human RV/LV, and neonatal rat cardiomyocytes (NRCMs). Differential qPCR-analysis (Hx vs. Nx in RV, Hx vs. Nx in LV, and RV vs. LV in Hx) identified nine hypoxia-regulated miRNAs: let-7e-5p, miR-29c-3p, miR-127-3p, miR-130a-3p, miR-146b-5p, miR-197-3p, miR-214-3p, miR-223-3p, and miR-451. Hypoxia downregulated miR-146b in the RV (p < 0.01) and, less so, in the LV (trend; p = 0.28). In silico alignment showed significant binding affinity of miR-146b-5p sequence with the 3'UTR of TRAF6 known to be upstream of pro-inflammatory NF-kB. Consistently, hypoxia induced TRAF6, IL-6, CCL2(MCP-1) in the mouse RV and LV. Incubating neonatal rat cardiomyocytes with pre-miR-146b led to a downregulation of TRAF6, IL-6, and CCL2(MCP-1). TRAF6 mRNA expression was also increased by 3-fold in the RV and LV of end-stage idiopathic pulmonary arterial hypertension (PAH) patients vs. non-PAH controls. We identified hypoxia-regulated, ventricle-specific miRNA expression profiles in the adult mouse heart in vivo. Hypoxia suppresses miR-146b, thus de-repressing TRAF6, and inducing pro-inflammatory IL-6 and CCL2(MCP-1). This novel hypoxia-induced miR-146b-TRAF6-IL-6/CCL2(MCP-1) axis likely drives cardiac fibrosis and dysfunction, and may lead to heart failure. KEY MESSAGES: Chouvarine P, Legchenko E, Geldner J, Riehle C, Hansmann G. Hypoxia drives cardiac miRNAs and inflammation in the right and left ventricle. • Hypoxia drives ventricle-specific miRNA profiles, regulating cardiac inflammation. • miR-146b-5p downregulates TRAF6, known to act upstream of pro-inflammatory NF-κB. • Hypoxia downregulates miR-146b and induces TRAF6, IL-6, CCL2 (MCP-1) in the murine RV and LV. • The inhibitory regulatory effects of miR-146b are confirmed in primary rat cardiomyocytes (pre-miR, anti-miR) and human explant heart tissue (endstage pulmonary arterial hypertension). • A novel miR-146b-TRAF6-IL-6/CCL2(MCP-1) axis likely drives cardiac inflammation, fibrosis and ventricular dysfunction.
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Affiliation(s)
- Philippe Chouvarine
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Ekaterina Legchenko
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Jonas Geldner
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Christian Riehle
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Georg Hansmann
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
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Li X, Zhang W, Xiao M, Wang F, Zhou P, Yang J, Chen X. MicroRNA-146b-5p protects oligodendrocyte precursor cells from oxygen/glucose deprivation-induced injury through regulating Keap1/Nrf2 signaling via targeting bromodomain-containing protein 4. Biochem Biophys Res Commun 2019; 513:875-882. [DOI: 10.1016/j.bbrc.2019.04.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 04/06/2019] [Indexed: 12/30/2022]
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20
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Zhang Y, Peng B, Han Y. MiR-182 alleviates the development of cyanotic congenital heart disease by suppressing HES1. Eur J Pharmacol 2018; 836:18-24. [PMID: 30107165 DOI: 10.1016/j.ejphar.2018.08.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 07/25/2018] [Accepted: 08/10/2018] [Indexed: 10/28/2022]
Abstract
miRNAs have been pointed to play critical roles in the protection and development of cyanotic congenital heart disease (CHD). MiR-182 is found to be associated with multiple heart diseases. However, little is known about the function and underlying mechanisms of miR-182 on cyanotic CHD. Here, H9c2 cells were exposed to hypoxia to construct the model of cyanotic CHD in vitro. qRT-PCR assay revealed that miR-182 expression was downregulated in serum samples from patients with cyanotic CHD and hypoxia-induced cardiomyocytes. Gain- and loss-of-function demonstrated that miR-182 overexpression promoted cell proliferation and suppressed apoptosis in hypoxia-induced H9c2 cells, while miR-182 knockdown repressed cell proliferation and promoted apoptosis. Dual-luciferase reporter assay verified that HES1 was a direct target of miR-182, and miR-182 repressed HES1 expression by binding to its 3'-UTR. Moreover, miR-182-mediated regulatory effect on cell proliferation and apoptosis was reversed by the restoration of HES1 expression. In conclusion, our study demonstrated that miR-182 exerted protection effect through suppressing HES1 in hypoxia-induced cardiomyocytes, highlighting its role as a potential therapeutic strategy for cyanotic CHD.
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Affiliation(s)
- Yanwei Zhang
- Department of Children's Heart Center, Henan Province People's Hospital, Fuwai Central China Cardiovascular Hospital, Zhengzhou 450000, China
| | - Bangtian Peng
- Department of Children's Heart Center, Henan Province People's Hospital, Fuwai Central China Cardiovascular Hospital, Zhengzhou 450000, China
| | - Yu Han
- Department of Children's Heart Center, Henan Province People's Hospital, Fuwai Central China Cardiovascular Hospital, Zhengzhou 450000, China
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21
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MiR-146b protect against sepsis induced mice myocardial injury through inhibition of Notch1. J Mol Histol 2018; 49:411-417. [DOI: 10.1007/s10735-018-9781-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 06/13/2018] [Indexed: 12/17/2022]
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22
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Yan M, Yang S, Meng F, Zhao Z, Tian Z, Yang P. MicroRNA 199a-5p induces apoptosis by targeting JunB. Sci Rep 2018; 8:6699. [PMID: 29703907 PMCID: PMC5923206 DOI: 10.1038/s41598-018-24932-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 04/03/2018] [Indexed: 01/18/2023] Open
Abstract
MicroRNAs participate in a variety of physiological and pathophysiological processes in various organs including the heart. Our previous work revealed that the level of miR-199a-5p was significantly higher in failing hearts than in control hearts. However, whether it is associated with the progression of heart failure (HF) and mediates cardiomyocyte apoptosis remained unclear. In the present study, we used various biochemical and molecular biological approaches to investigate the changes in miR-199a-5p levels in failing hearts in a rat model induced by acute myocardial infarction. We found that miR-199a-5p levels in the heart increased with the progression of HF, and overexpression of miR-199a-5p significantly increased apoptosis in untreated H9C2 cells and potentiated angiotensin II-induced apoptosis. Thus, our results indicate that miR-199a-5p is involved in the progression of HF and mediates cardiomyocyte apoptosis. We also confirmed that JunB, a member of the activator protein-1 transcription factor family, is one of direct targets of miR-199a-5p via a dual-luciferase reporter assay and mutagenesis on the 3' untranslated region of the JunB gene. Consistent with the above findings, overexpression of JunB in H9c2 cells suppressed cell apoptosis. Based on our findings, miR-199a-5p induces apoptosis by targeting JunB.
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Affiliation(s)
- Mengjie Yan
- Department of Internal Medicine and Cardiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Sibao Yang
- Department of Internal Medicine and Cardiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Fanbo Meng
- Department of Internal Medicine and Cardiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Zhihui Zhao
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Zhisen Tian
- Department of orthopedics, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Ping Yang
- Department of Internal Medicine and Cardiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China.
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Matoušková P, Hanousková B, Skálová L. MicroRNAs as Potential Regulators of Glutathione Peroxidases Expression and Their Role in Obesity and Related Pathologies. Int J Mol Sci 2018; 19:ijms19041199. [PMID: 29662007 PMCID: PMC5979329 DOI: 10.3390/ijms19041199] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 04/08/2018] [Accepted: 04/10/2018] [Indexed: 12/19/2022] Open
Abstract
Glutathione peroxidases (GPxs) belong to the eight-member family of phylogenetically related enzymes with different cellular localization, but distinct antioxidant function. Several GPxs are important selenoproteins. Dysregulated GPx expression is connected with severe pathologies, including obesity and diabetes. We performed a comprehensive bioinformatic analysis using the programs miRDB, miRanda, TargetScan, and Diana in the search for hypothetical microRNAs targeting 3′untranslated regions (3´UTR) of GPxs. We cross-referenced the literature for possible intersections between our results and available reports on identified microRNAs, with a special focus on the microRNAs related to oxidative stress, obesity, and related pathologies. We identified many microRNAs with an association with oxidative stress and obesity as putative regulators of GPxs. In particular, miR-185-5p was predicted by a larger number of programs to target six GPxs and thus could play the role as their master regulator. This microRNA was altered by selenium deficiency and can play a role as a feedback control of selenoproteins’ expression. Through the bioinformatics analysis we revealed the potential connection of microRNAs, GPxs, obesity, and other redox imbalance related diseases.
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Affiliation(s)
- Petra Matoušková
- Faculty of Pharmacy, Department of Biochemical Sciences, Charles University, 500 05, Hradec Králové, Czech Republic.
| | - Barbora Hanousková
- Faculty of Pharmacy, Department of Biochemical Sciences, Charles University, 500 05, Hradec Králové, Czech Republic.
| | - Lenka Skálová
- Faculty of Pharmacy, Department of Biochemical Sciences, Charles University, 500 05, Hradec Králové, Czech Republic.
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Ahn J, Lee H, Jung CH, Choi WH, Ha TY. Zerumbone ameliorates high-fat diet-induced adiposity by restoring AMPK-regulated lipogenesis and microRNA-146b/SIRT1-mediated adipogenesis. Oncotarget 2018; 8:36984-36995. [PMID: 28445161 PMCID: PMC5514886 DOI: 10.18632/oncotarget.16974] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 03/14/2017] [Indexed: 11/25/2022] Open
Abstract
Obesity is characterized by increased fat mass, as adipose tissue serves as a storage site for excess energy from food consumption. In obesity, altered lipid metabolism of adipose tissue, characterized by fatty acid uptake, de novo lipogenesis, and lipolysis, are induced. In this study, we examined the effect of zerumbone, a major sesquiterpene from wild ginger, on high-fat diet (HF)-induced obesity and dysregulated lipid metabolism in the white adipose tissues (WAT) of C57BL/6N mice. Dietary supplementation with zerumbone ameliorated HF-induced obesity and improved impaired lipid metabolism in WAT. Zerumbone additionally induced AMPK activation and phosphorylation of acetyl-CoA carboxylase, and effectively decreased adipogenic differentiation, in a concentration-dependent manner in the 3T3-L1 cells. Dysregulated microRNAs in obese WAT and adipocytes were examined, and zerumbone treatment was found to effectively reverse the robust upregulation of microRNA-146b. An increase in the levels of SIRT1, the direct target of microRNA-146b, was observed in zerumbone-treated differentiated adipocytes. This increase was additionally observed in WAT of zerumbone-supplemented mice. The antiadipogenic effect of zerumbone was found to be abolished in SIRT1-silenced 3T3-L1 cells. The increase in SIRT1 levels induced by zerumbone led to deacetylation of FOXO1 and PGC1α in WAT and differentiated 3T3-L1 cells. These findings indicate that zerumbone ameliorated diet-induced obesity and inhibited adipogenesis, and that the underlying mechanisms involved AMPK and the microRNA-146b/SIRT1 pathway. Zerumbone may represent a potential therapeutic candidate for the prevention and treatment of metabolic diseases, particularly obesity.
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Affiliation(s)
- Jiyun Ahn
- Research Group of Metabolic Mechanism, Korea Food Research Institute, Seongnam, Korea.,Division of Food Biotechnology, University of Science & Technology, Daejeon, Korea
| | - Hyunjung Lee
- Research Group of Metabolic Mechanism, Korea Food Research Institute, Seongnam, Korea
| | - Chang Hwa Jung
- Research Group of Metabolic Mechanism, Korea Food Research Institute, Seongnam, Korea.,Division of Food Biotechnology, University of Science & Technology, Daejeon, Korea
| | - Won Hee Choi
- Research Group of Metabolic Mechanism, Korea Food Research Institute, Seongnam, Korea
| | - Tae Youl Ha
- Research Group of Metabolic Mechanism, Korea Food Research Institute, Seongnam, Korea.,Division of Food Biotechnology, University of Science & Technology, Daejeon, Korea
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25
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MicroRNA as a Therapeutic Target in Cardiac Remodeling. BIOMED RESEARCH INTERNATIONAL 2017; 2017:1278436. [PMID: 29094041 PMCID: PMC5637866 DOI: 10.1155/2017/1278436] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/23/2017] [Accepted: 08/09/2017] [Indexed: 12/20/2022]
Abstract
MicroRNAs (miRNAs) are small RNA molecules that contain 18–25 nucleotides. The alterations in their expression level play crucial role in the development of many disorders including heart diseases. Myocardial remodeling is the final pathological consequence of a variety of myocardial diseases. miRNAs have central role in regulating pathogenesis of myocardial remodeling by modulating cardiac hypertrophy, cardiomyocytes injury, cardiac fibrosis, angiogenesis, and inflammatory response through multiple mechanisms. The balancing and tight regulation of different miRNAs is a key to drive the cellular events towards functional recovery and any fall in this leads to detrimental effect on cardiac function following various insults. In this review, we discuss the impact of alterations of miRNAs expression on cardiac hypertrophy, cardiomyocytes injury, cardiac fibrosis, angiogenesis, and inflammatory response. We have also described the targets (receptors, signaling molecules, transcription factors, etc.) of miRNAs on which they act to promote or attenuate cardiac remodeling processes in different type cells of cardiac tissues.
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Abstract
MicroRNAs are small, noncoding, RNAs known for their powerful modulation of molecular processes, making them a major focus for studying pathological mechanisms. The human miR-146 family of microRNAs consists of two member genes, MIR146A and MIR146B These two microRNAs are located on different chromosomes and exhibit differential regulation in many cases. However, they are nearly identical in sequence, sharing a seed region, and are thus predicted to target the same set of genes. A large proportion of the microRNA (miR)-146 literature focuses on its role in regulating the innate immune response in the context of various pathologies by modulating two widely studied target genes in the toll-like receptor signaling cascade. A growing subset of the literature reports a role of miR-146 in cardiovascular and renal disease, and data suggest there is exciting potential for miR-146 as a diagnostic and therapeutic target. Nevertheless, the published literature is confounded by unclear and imprecise language concerning the specific effects of the two miR-146 family members. The present review will compare the genomic origin and regulation of miR-146a and miR-146b, discuss some approaches to overcome analytical and experimental challenges, and summarize findings in major areas of miR-146 research. Moving forward, careful evaluation of miR-146a/b specificity in analytical and experimental approaches will aid researchers in elucidating the functional relevance of differential regulation of the miR-146 family members in health and disease.
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Affiliation(s)
- Mark R Paterson
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; and
| | - Alison J Kriegel
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; and
- Center of Systems Molecular Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
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27
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Hendgen-Cotta UB, Messiha D, Esfeld S, Deenen R, Rassaf T, Totzeck M. Inorganic nitrite modulates miRNA signatures in acute myocardial in vivo ischemia/reperfusion. Free Radic Res 2017; 51:91-102. [PMID: 28090786 DOI: 10.1080/10715762.2017.1282158] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Acute myocardial infarction is the leading cause of mortality in the industrialized world. While it is essential to attempt an early reperfusion of ischemic myocardial territories, reperfusion itself adds damage to the heart, the ischemia-reperfusion (I/R) injury. Particularly the injury resulting from the very first minutes of reperfusion remains incompletely understood. MicroRNAs (miRNAs) are dynamic regulators in I/R injury. Nitric oxide (•NO) signaling, in turn, interacts with miRNA signaling. Our previous investigations showed that •NO signaling in I/R could be modulated by nitrite. We therefore sought to investigate the role of miRNAs in nitrite cardioprotection with focus on the first few minutes of reperfusion. The study was conducted in mice in vivo with 30 min of ischemia and 5 min of reperfusion. Mice received a single-dose of nitrite or saline intracardially 5 min prior to reperfusion. We identified nine miRNAs to be up-regulated after 5 min of reperfusion. The up-regulation of almost half of those miRNAs (miR-125a-5p, miR-146b, miR-339-3p, miR-433) was inhibited by nitrite treatment, perpetuating baseline values. In silico analysis revealed the Irak-M gene to be a target of miR-146b and miR-339-3p. Correspondingly, a rise in Irak-M transcript and protein levels occurred by nitrite treatment within the early phase of reperfusion. The results demonstrate that already a very short phase of reperfusion is sufficient for significant dysregulation in cardiac miRNAs expression and that nitrite preserves baseline values of miRNAs in the scale of only a few minutes. These findings hint at a potential novel cardioprotective mechanism of nitrite signaling.
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Affiliation(s)
- Ulrike B Hendgen-Cotta
- a Department of Cardiology and Angiology, Medical Faculty , West German Heart and Vascular Center Essen, University Hospital Essen , Essen , Germany
| | - Daniel Messiha
- a Department of Cardiology and Angiology, Medical Faculty , West German Heart and Vascular Center Essen, University Hospital Essen , Essen , Germany
| | - Sonja Esfeld
- a Department of Cardiology and Angiology, Medical Faculty , West German Heart and Vascular Center Essen, University Hospital Essen , Essen , Germany
| | - René Deenen
- b Biological and Medical Research Center (BMFZ), Heinrich-Heine-University , Düsseldorf , Germany
| | - Tienush Rassaf
- a Department of Cardiology and Angiology, Medical Faculty , West German Heart and Vascular Center Essen, University Hospital Essen , Essen , Germany
| | - Matthias Totzeck
- a Department of Cardiology and Angiology, Medical Faculty , West German Heart and Vascular Center Essen, University Hospital Essen , Essen , Germany
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Xi Y, Wang L, Sun C, Yang C, Zhang F, Li D. The novel miR-9501 inhibits cell proliferation, migration and activates apoptosis in non-small cell lung cancer. Med Oncol 2016; 33:124. [PMID: 27734264 DOI: 10.1007/s12032-016-0837-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 10/05/2016] [Indexed: 01/08/2023]
Abstract
Accumulating evidences suggest that lots of microRNAs (miRNAs) play crucial roles in (patho-)physiological processes of lung cancer, including metastasis, drug-resistance or tumorigenesis. They mediate the progression of cell growth, migration and invasion by regulating the expression of special genes. MiRNA expression patterns could also serve as diagnostic/prognostic biomarkers. Cancer therapies mediated by miRNAs remain tremendous potential and challenges. Our previous small RNA-seq assay found that the novel miR-9501 was down-regulated in lung cancer tissues compared with adjacent non-cancer tissues. In this study, our results verified that miR-9501 was significantly down-regulated in lung cancer tissues and its expression levels were remarkably suppressed in non-small cell lung cancer cell lines. Then, we characterized and investigated the novel miR-9501 in A549 cells. Transient transfection of miR-9501 into cultured A549 cells led to remarkable decrease in cell proliferation, migration and increase apoptosis. These data demonstrated that miR-9501 might be a tumor suppressor for lung cancer therapy.
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Affiliation(s)
- Yongyong Xi
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, NO. 115 on Donghu Road of Wuhan, Wuhan, Hubei, 430071, People's Republic of China
| | - Liang Wang
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, NO. 115 on Donghu Road of Wuhan, Wuhan, Hubei, 430071, People's Republic of China
| | - Chengcao Sun
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, NO. 115 on Donghu Road of Wuhan, Wuhan, Hubei, 430071, People's Republic of China
| | - Cuili Yang
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, NO. 115 on Donghu Road of Wuhan, Wuhan, Hubei, 430071, People's Republic of China
| | - Feng Zhang
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, NO. 115 on Donghu Road of Wuhan, Wuhan, Hubei, 430071, People's Republic of China
| | - Dejia Li
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, NO. 115 on Donghu Road of Wuhan, Wuhan, Hubei, 430071, People's Republic of China.
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He S, Liu S, Wu X, Xin M, Ding S, Xin D, Ouyang H, Zhang J. Protective role of downregulated MLK3 in myocardial adaptation to chronic hypoxia. J Physiol Biochem 2016; 73:371-380. [PMID: 28555332 DOI: 10.1007/s13105-017-0561-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 03/28/2017] [Indexed: 11/25/2022]
Abstract
A series of protective responses could be evoked to achieve compensatory adaptation once cardiomyocytes are subjected to chronic hypoxia. MLK3/JNK/c-jun signaling pathway was previously demonstrated to be involved in this process. In the present study, we aim to further examine the performance of MLK3 in hypoxic H9C2 cells and potential mechanism. Myocardial samples of patients with congenital heart disease (CHD) were collected. H9C2 cells were cultured in hypoxic conditions for various durations. MLK3 was silenced by transfection of shRNA to evaluate its role in cell viability. We found expression of MLK3 protein was lower in patients with cyanotic CHD. In hypoxic H9C2 cells, its expression was gradually decreased in a time-dependent manner. However, there was no significant difference about expression of MLK3 mRNA. According to the results of MTT, LDH, and TUNEL, faster cell growth curve, lower death rate, and less apoptotic cells could be observed in MLK-shRNA group compared with scramble-shRNA group. Silencing of MLK3 significantly reduced expression of cleaved caspase-3, cleaved PARP, Bad, and Bax, together with increased expression of Bcl-2 and ration of Bcl-2/Bax. Both ratio of phospho-JNK/total JNK and ratio of phospho-c-jun/total c-jun were significantly decreased once MLK3 was silenced. At various reoxygenation time, MLK3 shRNA could significantly promote cell survival and decrease cell death according to MTT and LDH. Our results suggested that chronic hypoxia could reduce MLK3 expression in a posttranscriptional regulatory manner. Downregulation of MLK3 protects H9C2 cells from hypoxia-induced apoptosis and H/R injury via blocking the activation of JNK and c-jun.
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Affiliation(s)
- Siyi He
- Department of Cardiovascular Surgery, Chengdu Military General Hospital, Rongdu Avenue No. 270, Jinniu District, Chengdu City, Sichuan Province, 610083, China
- Department of Cardiovascular Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Shunbi Liu
- Department of Cardiovascular Surgery, Chengdu Military General Hospital, Rongdu Avenue No. 270, Jinniu District, Chengdu City, Sichuan Province, 610083, China
| | - Xiaochen Wu
- Department of Cardiovascular Surgery, Chengdu Military General Hospital, Rongdu Avenue No. 270, Jinniu District, Chengdu City, Sichuan Province, 610083, China
| | - Mei Xin
- Department of Cardiovascular Surgery, Chengdu Military General Hospital, Rongdu Avenue No. 270, Jinniu District, Chengdu City, Sichuan Province, 610083, China
| | - Sheng Ding
- Department of Cardiovascular Surgery, Chengdu Military General Hospital, Rongdu Avenue No. 270, Jinniu District, Chengdu City, Sichuan Province, 610083, China
| | - Dong Xin
- Department of Cardiovascular Surgery, Chengdu Military General Hospital, Rongdu Avenue No. 270, Jinniu District, Chengdu City, Sichuan Province, 610083, China
| | - Hui Ouyang
- Department of Cardiovascular Surgery, Chengdu Military General Hospital, Rongdu Avenue No. 270, Jinniu District, Chengdu City, Sichuan Province, 610083, China.
| | - Jinbao Zhang
- Department of Cardiovascular Surgery, Chengdu Military General Hospital, Rongdu Avenue No. 270, Jinniu District, Chengdu City, Sichuan Province, 610083, China.
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