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Mirzaei R, Karampoor S, Korotkova NL. The emerging role of miRNA-122 in infectious diseases: Mechanisms and potential biomarkers. Pathol Res Pract 2023; 249:154725. [PMID: 37544130 DOI: 10.1016/j.prp.2023.154725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/08/2023]
Abstract
microRNAs (miRNAs) are small, non-coding RNA molecules that play crucial regulatory roles in numerous cellular processes. Recent investigations have highlighted the significant involvement of miRNA-122 (miR-122) in the pathogenesis of infectious diseases caused by diverse pathogens, encompassing viral, bacterial, and parasitic infections. In the context of viral infections, miR-122 exerts regulatory control over viral replication by binding to the viral genome and modulating the host's antiviral response. For instance, in hepatitis B virus (HBV) infection, miR-122 restricts viral replication, while HBV, in turn, suppresses miR-122 expression. Conversely, miR-122 interacts with the hepatitis C virus (HCV) genome, facilitating viral replication. Regarding bacterial infections, miR-122 has been found to regulate host immune responses by influencing inflammatory cytokine production and phagocytosis. In Vibrio anguillarum infections, there is a significant reduction in miR-122 expression, contributing to the pathophysiology of bacterial infections. Toll-like receptor 14 (TLR14) has been identified as a novel target gene of miR-122, affecting inflammatory and immune responses. In the context of parasitic infections, miR-122 plays a crucial role in regulating host lipid metabolism and immune responses. For example, during Leishmania infection, miR-122-containing extracellular vesicles from liver cells are unable to enter infected macrophages, leading to a suppression of the inflammatory response. Furthermore, miR-122 exhibits promise as a potential biomarker for various infectious diseases. Its expression level in body fluids, particularly in serum and plasma, correlates with disease severity and treatment response in patients affected by HCV, HBV, and tuberculosis. This paper also discusses the potential of miR-122 as a biomarker in infectious diseases. In summary, this review provides a comprehensive and insightful overview of the emerging role of miR-122 in infectious diseases, detailing its mechanism of action and potential implications for the development of novel therapeutic strategies.
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Affiliation(s)
- Rasoul Mirzaei
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Sajad Karampoor
- Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran.
| | - Nadezhda Lenoktovna Korotkova
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Russia; Federal State Budgetary Educational Institution of Higher Education "Privolzhsky Research Medical University" of the Ministry of Health of the Russian Federation (FSBEI HE PRMU MOH Russia), Russia
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Omeljaniuk WJ, Laudański P, Miltyk W. The role of miRNA molecules in the miscarriage process. Biol Reprod 2023; 109:29-44. [PMID: 37104617 PMCID: PMC10492520 DOI: 10.1093/biolre/ioad047] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/18/2023] [Accepted: 04/20/2023] [Indexed: 04/29/2023] Open
Abstract
The etiology and pathogenesis of miscarriage, which is the most common pregnancy complication, have not been fully elucidated. There is a constant search for new screening biomarkers that would allow for the early diagnosis of disorders associated with pregnancy pathology. The profiling of microRNA expression is a promising research area, which can help establish the predictive factors for pregnancy diseases. Molecules of microRNAs are involved in several processes crucial for the development and functioning of the body. These processes include cell division and differentiation, programmed cell death, blood vessel formation or tumorigenesis, and the response to oxidative stress. The microRNAs affect the number of individual proteins in the body due to their ability to regulate gene expression at the post-transcriptional level, ensuring the normal course of many cellular processes. Based on the scientific facts available, this paper presents a compendium on the role of microRNA molecules in the miscarriage process. The expression of potential microRNA molecules as early minimally invasive diagnostic biomarkers may be evaluated as early as the first weeks of pregnancy and may constitute a monitoring factor in the individual clinical care of women in early pregnancy, especially after the first miscarriage. To summarize, the described scientific data set a new direction of research in the development of preventive care and prognostic monitoring of the course of pregnancy.
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Affiliation(s)
| | - Piotr Laudański
- Department of Obstetrics, Gynecology and Gynecological Oncology, Medical University of Warsaw, Warsaw, Poland
- Women’s Health Research Institute, Calisia University, Kalisz, Poland
- OVIklinika Infertility Center, Warsaw, Poland
| | - Wojciech Miltyk
- Department of Analysis and Bioanalysis of Medicines, Medical University of Bialystok, Bialystok, Poland
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MicroRNA-122 in human cancers: from mechanistic to clinical perspectives. Cancer Cell Int 2023; 23:29. [PMID: 36803831 PMCID: PMC9940444 DOI: 10.1186/s12935-023-02868-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 02/09/2023] [Indexed: 02/22/2023] Open
Abstract
MicroRNAs (miRNAs) are endogenous short non-coding RNAs that can regulate the expression of target genes post-transcriptionally and interact with mRNA-coding genes. MiRNAs play vital roles in many biological functions, and abnormal miRNA expression has been linked to various illnesses, including cancer. Among the miRNAs, miR-122, miR-206, miR-21, miR-210, miR-223, and miR-424 have been extensively studied in various cancers. Although research in miRNAs has grown considerably over the last decade, much is yet to be discovered, especially regarding their role in cancer therapies. Several kinds of cancer have been linked to dysregulation and abnormal expression of miR-122, indicating that miR-122 may serve as a diagnostic and/or prognostic biomarker for human cancer. Consequently, in this review literature, miR-122 has been analyzed in numerous cancer types to sort out the function of cancer cells miR-122 and enhance patient response to standard therapy.
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Qin W, Guo J, Gou W, Wu S, Guo N, Zhao Y, Hou W. Molecular mechanisms of isoflavone puerarin against cardiovascular diseases: What we know and where we go. CHINESE HERBAL MEDICINES 2022; 14:234-243. [PMID: 36117660 PMCID: PMC9476793 DOI: 10.1016/j.chmed.2021.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/09/2021] [Accepted: 12/29/2021] [Indexed: 12/09/2022] Open
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Majka M, Kleibert M, Wojciechowska M. Impact of the Main Cardiovascular Risk Factors on Plasma Extracellular Vesicles and Their Influence on the Heart's Vulnerability to Ischemia-Reperfusion Injury. Cells 2021; 10:3331. [PMID: 34943838 PMCID: PMC8699798 DOI: 10.3390/cells10123331] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/20/2021] [Accepted: 11/22/2021] [Indexed: 12/12/2022] Open
Abstract
The majority of cardiovascular deaths are associated with acute coronary syndrome, especially ST-elevation myocardial infarction. Therapeutic reperfusion alone can contribute up to 40 percent of total infarct size following coronary artery occlusion, which is called ischemia-reperfusion injury (IRI). Its size depends on many factors, including the main risk factors of cardiovascular mortality, such as age, sex, systolic blood pressure, smoking, and total cholesterol level as well as obesity, diabetes, and physical effort. Extracellular vesicles (EVs) are membrane-coated particles released by every type of cell, which can carry content that affects the functioning of other tissues. Their role is essential in the communication between healthy and dysfunctional cells. In this article, data on the variability of the content of EVs in patients with the most prevalent cardiovascular risk factors is presented, and their influence on IRI is discussed.
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Affiliation(s)
- Miłosz Majka
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Banacha 1b, 02-097 Warsaw, Poland; (M.M.); (M.K.)
| | - Marcin Kleibert
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Banacha 1b, 02-097 Warsaw, Poland; (M.M.); (M.K.)
| | - Małgorzata Wojciechowska
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Banacha 1b, 02-097 Warsaw, Poland; (M.M.); (M.K.)
- Invasive Cardiology Unit, Independent Public Specialist Western Hospital John Paul II, Daleka 11, 05-825 Grodzisk Mazowiecki, Poland
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Estradiol deficiency and skeletal muscle apoptosis: Possible contribution of microRNAs. Exp Gerontol 2021; 147:111267. [PMID: 33548486 PMCID: PMC9897888 DOI: 10.1016/j.exger.2021.111267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Menopause leads to estradiol (E2) deficiency that is associated with decreases in muscle mass and strength. Here we studied the effect of E2 deficiency on microRNA (miR) signaling that targets apoptotic pathways. METHODS C57BL6 mice were divided into control (normal estrous cycle, n = 8), OVX (E2 deficiency, n = 7) and OVX + E2 groups (E2-pellet, n = 4). Six weeks following the OVX surgery, mice were sacrificed and RNA isolated from gastrocnemius muscles. miR-profiles were studied with Next-Generation Sequencing (NGS) and candidate miRs verified using qPCR. The target proteins of the miRs were found using in silico analysis and measured at mRNA (qPCR) and protein levels (Western blot). RESULTS Of the apoptosis-linked miRs present, eleven (miRs-92a-3p, 122-5p, 133a-3p, 214-3p, 337-3p, 381-3p, 483-3p, 483-5p, 491-5p, 501-5p and 652-3p) indicated differential expression between OVX and OVX + E2 mice in NGS analysis. In qPCR verification, muscle from OVX mice had lower expression of all eleven miRs compared with OVX + E2 (p < 0.050). Accordingly, OVX had higher expression of cytochrome C and caspases 6 and 9 compared with OVX + E2 at the mRNA level (p < 0.050). At the protein level, OVX also had lower anti-apoptotic BCL-W and greater pro-apoptotic cytochrome C and active caspase 9 compared with OVX + E2 (p < 0.050). CONCLUSION E2 deficiency downregulated several miRs related to apoptotic pathways thus releasing their targets from miR-mediated suppression, which may lead to increased apoptosis and contribute to reduced skeletal muscle mass.
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Attenuating ischemia/reperfusion injury in rat cardiac transplantation by intracoronary infusion with siRNA cocktail solution. Biosci Rep 2021; 40:225833. [PMID: 32686827 PMCID: PMC7403945 DOI: 10.1042/bsr20193937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 12/12/2022] Open
Abstract
Tumor necrosis factor-α (TNF-α), caspase-8, and complement component 5a receptor (C5aR) are known to play a crucial role in the myocardial ischemia/reperfusion (I/R) injury in cardiac transplantation. We hypothesized that the intracoronary infusion of TNF-α, caspase-8, and C5aR small interfering RNAs (siRNA) would protect cardiac allograft function and improve graft survival from I/R injury-induced organ failure. I/R injury of cardiac allograft was induced by syngeneic rat cardiac transplantation, in which the transplanted hearts were infused with saline or different amounts of siRNA cocktail solution targeting TNF-α, caspase-8, and C5aR via coronary arteries, and subsequently subjected to 18 h of preservation at 4°C in histidine–tryptophan–ketoglutarate (HTK) solution. The effects of siRNA cocktail solution on prolonged cold I/R injury were determined by assessing graft survival, histopathological changes, myeloperoxidase (MPO) activity, and malondialdehyde (MDA) concentration. The perfused siRNA cocktail solution successfully knocked down the expression of TNF-α, caspase-8, and C5aR in vitro and in vivo. Approximately 91.7% of control hearts that underwent 18 h of cold ischemia ceased their function after transplantation; however, 87.5% of cardiac allografts from the highest dose siRNA cocktail solution-pretreated hearts survived >14 days and exhibited minimal histological changes, with minimal cellular infiltration, interstitial edema, and inflammation and maximal reduced MPO activity and MDA concentration in the cardiac allograft. We demonstrated the feasibility and efficiency of infusion of TNF-α, caspase-8, and C5aR siRNA via the intracoronary route as a promising strategy for gene silencing against I/R injury in cardiac transplantation.
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Abstract
BACKGROUND MicroRNA 221 has been found to be a good marker for several cancers. Some studies also focused on the relationship between microRNA 221 and glioma. However, the results are controversial. We aimed to systematically evaluate the prognostic role of microRNA 221 in glioma through performing a meta-analysis. METHODS The articles which were included in our study were searched on the Web of Science, EMBASE, PubMed, Cochrane Library and China National Knowledge Infrastructure. The basic characteristics and relevant data were extracted. Hazard ratios (HRs) with 95% confidence intervals (CIs) were pooled to evaluate the prognostic role of microRNA 221 in glioma. RESULTS Eight studies with 1069 patients were included. We systematically evaluated the role of microRNA 221 for overall survival (OS) and disease free survival (DFS) in glioma patients (HR for OS = 1.66, 95% CI, 1.34-2.04; HR for DFS = 1.14, 95% CI, 1.02-1.26). Subgroup analyses were performed according to the nation of the studies, the origin of the samples, the stage of the tumors, the cut-off value, and the method for detecting the microRNA 221. No significant publication bias was found (P = .133). CONCLUSION In conclusion, high expression of microRNA 221 was related to poor prognosis of glioma. These findings may assist future exploration on microRNA 221 and help predict the prognosis of glioma. However, due to the significant heterogeneity of these studies, more studies are warranted.
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Affiliation(s)
- Yanlin Song
- Department of Neurosurgery and National Clinical Research Center for Geriatrics
- Department of Biotherapy and Cancer Center
| | - Min He
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, P.R. China
| | - Jing Zhang
- Department of Neurosurgery and National Clinical Research Center for Geriatrics
| | - Jianguo Xu
- Department of Neurosurgery and National Clinical Research Center for Geriatrics
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Liu Y, Song JW, Lin JY, Miao R, Zhong JC. Roles of MicroRNA-122 in Cardiovascular Fibrosis and Related Diseases. Cardiovasc Toxicol 2020; 20:463-473. [PMID: 32856216 PMCID: PMC7451782 DOI: 10.1007/s12012-020-09603-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 08/18/2020] [Indexed: 02/07/2023]
Abstract
Fibrotic diseases cause annually more than 800,000 deaths worldwide, where of the majority accounts for cardiovascular fibrosis, which is characterized by endothelial dysfunction, myocardial stiffening and reduced dispensability. MicroRNAs (miRs), small noncoding RNAs, play critical roles in cardiovascular dysfunction and related disorders. Intriguingly, there is a critical link among miR-122, cardiovascular fibrosis, sirtuin 6 (SIRT6) and angiotensin-converting enzyme 2 (ACE2), which was recently identified as a coreceptor for SARS-CoV2 and a negative regulator of the rennin-angiotensin system. MiR-122 overexpression appears to exacerbate the angiotensin II-mediated loss of autophagy and increased inflammation, apoptosis, extracellular matrix deposition, cardiovascular fibrosis and dysfunction by modulating the SIRT6-Elabela-ACE2, LGR4-β-catenin, TGFβ-CTGF and PTEN-PI3K-Akt signaling pathways. More importantly, the inhibition of miR-122 has proautophagic, antioxidant, anti-inflammatory, anti-apoptotic and antifibrotic effects. Clinical and experimental studies clearly demonstrate that miR-122 functions as a crucial hallmark of fibrogenesis, cardiovascular injury and dysfunction. Additionally, the miR-122 level is related to the severity of hypertension, atherosclerosis, atrial fibrillation, acute myocardial infarction and heart failure, and miR-122 expression is a risk factor for these diseases. The miR-122 level has emerged as an early-warning biomarker cardiovascular fibrosis, and targeting miR-122 is a novel therapeutic approach against progression of cardiovascular dysfunction. Therefore, an increased understanding of the cardiovascular roles of miR-122 will help the development of effective interventions. This review summarizes the biogenesis of miR-122; regulatory effects and underlying mechanisms of miR-122 on cardiovascular fibrosis and related diseases; and its function as a potential specific biomarker for cardiovascular dysfunction.
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Affiliation(s)
- Ying Liu
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China.,Medical Research Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Jia-Wei Song
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China
| | - Jian-Yu Lin
- Department of Comprehensive Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Ran Miao
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China. .,Medical Research Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
| | - Jiu-Chang Zhong
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, 100020, China. .,Medical Research Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
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Kraszewska I, Tomczyk M, Andrysiak K, Biniecka M, Geisler A, Fechner H, Zembala M, Stępniewski J, Dulak J, Jaźwa-Kusior A. Variability in Cardiac miRNA-122 Level Determines Therapeutic Potential of miRNA-Regulated AAV Vectors. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 17:1190-1201. [PMID: 32518806 PMCID: PMC7270145 DOI: 10.1016/j.omtm.2020.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/07/2020] [Indexed: 12/11/2022]
Abstract
Systemically delivered adeno-associated viral vector serotype 9 (AAV9) effectively transduces murine heart, but provides transgene expression also in liver and skeletal muscles. Improvement of the selectivity of transgene expression can be achieved through incorporation of target sites (TSs) for miRNA-122 and miRNA-206 into the 3′ untranslated region (3′ UTR) of the expression cassette. Here, we aimed to generate such miRNA-122- and miRNA-206-regulated AAV9 vector for a therapeutic, heart-specific overexpression of heme oxygenase-1 (HO-1). We successfully validated the vector functionality in murine cell lines corresponding to tissues targeted by AAV9. Next, we evaluated biodistribution of transgene expression following systemic vector delivery to HO-1-deficient mice of mixed C57BL/6J × FVB genetic background. Although AAV genomes were present in the hearts of these animals, HO-1 protein expression was either absent or significantly impaired. We found that miRNA-122, earlier described as liver specific, was present also in the hearts of C57BL/6J × FVB mice. Various levels of miRNA-122 expression were observed in the hearts of other mouse strains, in heart tissues of patients with cardiomyopathy, and in human induced pluripotent stem cell-derived cardiomyocytes in which we also confirmed such posttranscriptional regulation of transgene expression. Our data clearly indicate that therapeutic utilization of miRNA-based regulation strategy needs to consider inter-individual variability.
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Affiliation(s)
- Izabela Kraszewska
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Kraków, Poland
| | - Mateusz Tomczyk
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Kraków, Poland
| | - Kalina Andrysiak
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Kraków, Poland
| | | | - Anja Geisler
- Department of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Henry Fechner
- Department of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Michał Zembala
- Department of Cardiac Surgery, Heart and Lung Transplantation and Mechanical Circulatory Support, Silesian Center for Heart Diseases, 41-800 Zabrze, Poland
| | - Jacek Stępniewski
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Kraków, Poland
| | - Józef Dulak
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Kraków, Poland
- Kardio-Med Silesia, 41-800 Zabrze, Poland
| | - Agnieszka Jaźwa-Kusior
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Kraków, Poland
- Corresponding author Agnieszka Jaźwa-Kusior, PhD, Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa Str. 7, 30-387 Kraków, Poland.
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Jan MI, Ali T, Ishtiaq A, Mushtaq I, Murtaza I. Prospective Advances in Non-coding RNAs Investigation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1229:385-426. [PMID: 32285426 DOI: 10.1007/978-981-15-1671-9_24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Non-coding RNAs (ncRNAs) play significant roles in numerous physiological cellular processes and molecular alterations during pathological conditions including heart diseases, cancer, immunological disorders and neurological diseases. This chapter is focusing on the basis of ncRNA relation with their functions and prospective advances in non-coding RNAs particularly miRNAs investigation in the cardiovascular disease management.The field of ncRNAs therapeutics is a very fascinating and challenging too. Scientists have opportunity to develop more advanced therapeutics as well as diagnostic approaches for cardiovascular conditions. Advanced studies are critically needed to deepen the understanding of the molecular biology, mechanism and modulation of ncRNAs and chemical formulations for managing CVDs.
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Affiliation(s)
- Muhammad Ishtiaq Jan
- Department of Biochemistry, Signal Transduction Laboratory, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Tahir Ali
- Department of Biochemistry, Signal Transduction Laboratory, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Ayesha Ishtiaq
- Department of Biochemistry, Signal Transduction Laboratory, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Iram Mushtaq
- Department of Biochemistry, Signal Transduction Laboratory, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Iram Murtaza
- Department of Biochemistry, Signal Transduction Laboratory, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
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Wang Z, Qiu X, Zhang H, Li W. KLF5 influences cell biological function and chemotherapy sensitivity through the JNK signaling pathway in anaplastic thyroid carcinoma. J Biochem Mol Toxicol 2020; 34:e22469. [PMID: 32173973 DOI: 10.1002/jbt.22469] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 01/03/2020] [Accepted: 01/31/2020] [Indexed: 01/15/2023]
Abstract
We aimed to investigate the effects of Krüppel-like factor 5 (KLF5) on cell biological function and chemotherapy sensitivity of anaplastic thyroid carcinoma (ATC) and explore the underlying mechanism. In this study, we found that KLF5 was expressed higher in ATC cells than that in normal thyroid cells. Knockdown of KLF5 inhibited proliferation, induced apoptosis and restrained invasion and migration abilities of ATC cells. KLF5 overexpression promoted proliferation and inhibited apoptosis of ATC cells in response to doxorubicin (Dox), whereas KLF5 knockdown increased the sensitivity of ATC cells to Dox. Multidrug resistance gene 1/permeability glycoprotein and ATP-binding cassette superfamily G member 2 were heightened in ATC cells with KLF5 overexpression, but the opposite results were found in sh-KLF5-treated cells. Phosphorylation (p)-c-Jun N-terminal kinase (JNK) was upregulated in KLF5 overexpression cells, whereas it was downregulated in the KLF5 knockdown treatment group. Furthermore, KLF5 knockdown inhibited ATC growth and enhanced the Dox sensitivity of ATC by inactivating the JNK signaling pathway. Taken together, our findings concluded that KLF5 knockdown can remarkably inhibit the proliferation, invasion, and migration and induce apoptosis of ATC cells, and increase the chemotherapy sensitivity of ATC, all of which probably through inhibiting the JNK signaling pathway.
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Affiliation(s)
- Zheng Wang
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Breast and Thyroid Surgery, Nanyang Central Hospital, Nanyang, China
| | - Xinguang Qiu
- Department of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hao Zhang
- Department of Breast and Thyroid Surgery, Nanyang Central Hospital, Nanyang, China
| | - Weihan Li
- Department of Breast and Thyroid Surgery, Nanyang Central Hospital, Nanyang, China
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Sayed N, Tambe P, Kumar P, Jadhav S, Paknikar KM, Gajbhiye V. miRNA transfection via poly(amidoamine)-based delivery vector prevents hypoxia/reperfusion-induced cardiomyocyte apoptosis. Nanomedicine (Lond) 2019; 15:163-181. [PMID: 31799897 DOI: 10.2217/nnm-2019-0363] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Aim: Myocardial infarction is a tissue injury that leads to apoptosis of cardiomyocytes. This can be prevented by using miRNAs, but its delivery to cardiomyocytes is a major hurdle. We aimed to deliver miRNAs using poly(amidoamine)-histidine (PAMAM-His) nanocarriers to prevent apoptosis. Materials & methods: The PAMAM-His nanoparticles were synthesized and assessed for their transfection efficiency of miRNAs to prevent apoptosis in hypoxia/reperfusion-induced H9c2 as well as primary cultured cardiomyocytes. Results & conclusion: miRNAs-nanoparticle complexes exerted a significant antiapoptotic effect on the H9c2 and primary rat ventricular cardiomyocytes. Enhanced expression of antiapoptotic genes and decreased expression of proapoptotic genes were observed. PAMAM-His nanoparticles effectively delivered miRNAs to the cardiomyocytes and prevented the hypoxia/reperfusion-induced apoptosis critical in myocardial infarctions.
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Affiliation(s)
- Nida Sayed
- Nanobioscience, Agharkar Research Institute, Pune, 411 004, India
| | - Prajakta Tambe
- Nanobioscience, Agharkar Research Institute, Pune, 411 004, India
| | - Pramod Kumar
- Nanobioscience, Agharkar Research Institute, Pune, 411 004, India
| | - Sachin Jadhav
- Nanobioscience, Agharkar Research Institute, Pune, 411 004, India
| | - Kishore M Paknikar
- Nanobioscience, Agharkar Research Institute, Pune, 411 004, India.,Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.,Materials Research Centre, Malaviya National Institute of Technology, Jaipur, 302017, India
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Song G, Zhu L, Ruan Z, Wang R, Shen Y. MicroRNA-122 promotes cardiomyocyte hypertrophy via targeting FoxO3. Biochem Biophys Res Commun 2019; 519:682-688. [PMID: 31543343 DOI: 10.1016/j.bbrc.2019.09.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE -microRNAs (miRNAs) have emerged as novel regulators for cardiac hypertrophy. MiR-122 is well recognized as a promising therapeutic target in liver disease, whereas recently plays important roles in cardiovascular diseases. The current study aimed to explore the effect of miR-122 on the pathogenesis of cardiomyocyte hypertrophy. METHODS AND RESULTS -The cardiomyocytes isolated from the neonatal rat ventricular cardiomyocytes (NRVMs) were collected and performed to Angiotensin II (Ang II) administration. We observed a dramatically increased miR-122 expression in hypertrophic cardiomyocytes. The NRVMs transfected with miR-122 mimic or negative control were utilized for the functional analysis. Overexpression of miR-122 increased the morphology size of cardiomyocytes and promoted the pro-hypertrophic genes expression, whereas downregulated the anti-hypertrophic genes upon Ang II stimulation. The bioinformatics analysis and luciferase reporter assays exhibited that miR-122 directly targeted FoxO3 and attenuated its gene level in hypertrophic cardiomyocytes. Moreover, miR-122 negatively regulated FoxO3 but promoted calcineurin signaling pathway activation. Importantly, FoxO3 overexpression significantly reversed the effect of miR-122 on cardiomyocyte hypertrophy. CONCLUSION -Collected, our finding demonstrated that miR-122 accelerated the development of cardiomyocytes hypertrophy partially via directly regulation of FoxO3-calcineurin pathway.
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Affiliation(s)
- Guixian Song
- Department of Cardiology, Taizhou People's Hospital, Fifth Affiliated Hospital of Nantong University, Jiangsu Province, 225300, China
| | - Li Zhu
- Department of Cardiology, Taizhou People's Hospital, Fifth Affiliated Hospital of Nantong University, Jiangsu Province, 225300, China
| | - Zhongbao Ruan
- Department of Cardiology, Taizhou People's Hospital, Fifth Affiliated Hospital of Nantong University, Jiangsu Province, 225300, China
| | - Ruzhu Wang
- Department of Cardiology, Taizhou People's Hospital, Fifth Affiliated Hospital of Nantong University, Jiangsu Province, 225300, China
| | - Yahui Shen
- Department of Respiratory and Critical Care Medicine, Taizhou People's Hospital, Fifth Affiliated Hospital of Nantong University, Jiangsu Province, 225300, China.
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Exosomal microRNA-122 mediates obesity-related cardiomyopathy through suppressing mitochondrial ADP-ribosylation factor-like 2. Clin Sci (Lond) 2019; 133:1871-1881. [PMID: 31434696 DOI: 10.1042/cs20190558] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/14/2019] [Accepted: 08/21/2019] [Indexed: 12/23/2022]
Abstract
Emerging studies have demonstrated that microRNAs (miRs) participate in the development of multiple metabolic complications including cardiovascular diseases. Among them, circulating level of liver-secreted miR-122 was closely correlated with several consequence of heart diseases in clinical studies, and overexpression of miR-122 impaired cardiomyocyte function. However, it was unknown whether miR-122 could regulate cardiac biology in obesity. Therefore, present study was to disclose the role of miR-122 in cardiac metabolic disorders and potential molecular mechanisms. Through utilizing clinical samples and high fat diet-fed mice, we investigated the physiological roles of miR-122 in obesity-related cardiomyopathy. Besides, present study explored the mitochondrial function under exosomal miR-122 stimulation in mouse primary cardiomyocytes. In clinical samples and obese mice, the circulating level of exosomal miR-122 was positively correlated with cardiac dysfunctional parameters, including reduction in ejection fraction (EF) and increased levels of NT-proBNP. Human plasma exosomes transported miR-122 into mouse primary cardiomyocytes, and impaired mitochondrial ATP production and oxygen consumption, whereas miR-122 sponge improved these inhibitory effects. In dietary-induced mice, increased hepatic and circulating exosomal miR-122 deteriorated cardiac structure and functional index, and inhibited mitochondrial function. Liver-specific blockage of miR-122 attenuated abnormal cardiac remodeling. Mechanistically, miR-122 directly bound and suppressed mitochondrial protein ADP-ribosylation factor-like 2 (Arl-2) in vitro and in vivo Knockdown of Arl-2 abolished the mitochondrial benefits of miR-122 sponge in exosome-treated mouse primary cardiomyocytes.In conclusions, our present study firstly showed that liver-secreted exosomal miR-122 played a critical role in the development of metabolic cardiomyopathy, and miR-122/mitochondrial Arl-2 signaling affected cardiac energy homeostasis.
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Iborra-Egea O, Rueda F, Lakkisto P, Harjola VP, García-García C, Bayes-Genis A. Dinámica de microARN circulantes en pacientes con infarto agudo de miocardio con elevación del segmento ST con shock cardiogénico. Rev Esp Cardiol 2019. [DOI: 10.1016/j.recesp.2018.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Pedretti S, Brulhart-Meynet MC, Montecucco F, Lecour S, James RW, Frias MA. HDL protects against myocardial ischemia reperfusion injury via miR-34b and miR-337 expression which requires STAT3. PLoS One 2019; 14:e0218432. [PMID: 31220137 PMCID: PMC6586303 DOI: 10.1371/journal.pone.0218432] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 06/03/2019] [Indexed: 12/17/2022] Open
Abstract
Purpose High density lipoprotein (HDL) protects against myocardial infarction via mechanisms that remain unclear. STAT3 (signal transducer and activator of transcription 3) plays a key role in HDL-induced cardioprotection. In the heart, microRNAs (miRNAs) are involved in ischemia reperfusion injury. We therefore investigated whether the cardioprotective effect of HDL modulates miRNAs as a downstream target of STAT3 activation. Methods STAT3 cardiomyocyte deficient mice (STAT3-KO) and wildtype littermates (STAT3-WT) were submitted to left coronary ligature and reperfused (IR) with or without injection of HDL. Infarct size (IS) was determined and cardiac miRNA expression was evaluated after reperfusion in sham, IR and IR+HDL hearts by microarray analysis. In vitro, neonatal rat ventricular cardiomyocytes were submitted to hypoxia with or without HDL incubation. Cell viability and miRNA expression were analysed. Results In vivo, HDL reduced IS from 40.5±4.3% to 24.4±2.1% (p<0.05) in STAT3-WT mice. HDL failed to protect in STAT3-KO mice. In STAT3-WT mice, both miR-34b and miR-337 were increased in IR compared to sham and IR+HDL groups (p<0.05). These miRNAs were not modulated in STAT3-KO mice. In vitro, incubation with HDL improved cell viability against hypoxia (p<0.05). The expression of miR-34b and miR-337 was increased by hypoxia and reduced by HDL treatment (p<0.05). In cardiomyocytes transfected with miRNA mimics, HDL failed to improve cell viability against hypoxia. Conclusions Our study, performed both in vivo and in vitro, delineates a novel cardioprotective signalling pathway activated by HDL, involving STAT3-mediated decrease of miR-34b and miR-337 expression.
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Affiliation(s)
- Sarah Pedretti
- Department of Medical Specialties-Endocrinology, Diabetology, Hypertension and Nutrition, University of Geneva, Geneva, Switzerland
| | - Marie-Claude Brulhart-Meynet
- Department of Medical Specialties-Endocrinology, Diabetology, Hypertension and Nutrition, University of Geneva, Geneva, Switzerland
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa School of Medicine, Genoa, Italy
- IRCCS AOU San Martino—IST, Genoa, Genoa, Italy
- Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
| | - Sandrine Lecour
- Hatter Institute for Cardiovascular Research in Africa, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Richard W. James
- Department of Medical Specialties-Endocrinology, Diabetology, Hypertension and Nutrition, University of Geneva, Geneva, Switzerland
| | - Miguel A. Frias
- Department of Medical Specialties-Endocrinology, Diabetology, Hypertension and Nutrition, University of Geneva, Geneva, Switzerland
- Division of Laboratory Medicine, Diagnostics Department, Geneva University Hospitals, Geneva, Switzerland
- * E-mail:
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18
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MicroRNA-122 promotes endothelial cell apoptosis by targeting XIAP: Therapeutic implication for atherosclerosis. Life Sci 2019; 232:116590. [PMID: 31228514 DOI: 10.1016/j.lfs.2019.116590] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 01/05/2023]
Abstract
Endothelial cell (EC) apoptosis is fundamental for the pathophysiology of atherosclerosis, in which microRNAs (miRNAs) emerge as critical regulators. miR-122 has been shown to regulate the apoptosis of various cell types, however, whether miR-122 is associated with atherosclerosis and EC apoptosis remains unknown. In this study, we found that miR-122 expression was increased in the aortic ECs of ApoE-/- mice fed with a high-fat diet (HFD), as compared to normal-diet (ND), implying a potential association between miR-122 elevation and atherogenesis. In addition, in vitro, miR-122 expression was also induced in human aortic ECs (HAECs) by the treatment of oxidized low-density lipoprotein (ox-LDL), a common atherogenic factor. Functionally, miR-122 knockdown suppressed ox-LDL-induced apoptosis of HAECs, suggesting a pro-apoptotic role of miR-122 in HAECs under this pro-atherogenic condition. Further evidence revealed that the X-linked inhibitor-of-apoptosis protein (XIAP) was directly targeted and suppressed by miR-122 in HAECs, and more importantly, XIAP knockdown diminished miR-122 effect on apoptosis, thus establishing XIAP as a prominent target that mediates miR-122 regulation of the apoptosis of HAECs. Together, these results may identify miR-122 as a novel regulator in EC apoptosis, which offers it as a possible target for therapeutic interventions of atherosclerosis.
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Circulating MiRNA Dynamics in ST-Segment Elevation Myocardial Infarction-driven Cardiogenic Shock. ACTA ACUST UNITED AC 2018; 72:783-786. [PMID: 30471962 DOI: 10.1016/j.rec.2018.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 10/09/2018] [Indexed: 11/21/2022]
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20
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Zhai CL, Tang GM, Qian G, Han BJ, Hu HL, Wang SJ, Yin D, Pan HH, Zhang S. miR-190 protects cardiomyocytes from apoptosis induced by H 2O 2 through targeting MAPK8 and regulating MAPK8/ERK signal pathway. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:2183-2192. [PMID: 31938330 PMCID: PMC6958226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 01/28/2018] [Indexed: 06/10/2023]
Abstract
MicroRNAs (miRs) have been demonstrated to regulate physiological and pathological processes. Numerous miRsprotect against cardiomyocyte injury induced by oxidative stress. However, the function of miR-190 still remains unclear. Here, we determined the expression level of miR-190 in H9c2 cells under H2O2 treatment and found that miR-190 expression was significantly inhibited by H2O2. Further study indicated that miR-190 significantly reduced cell apoptosisand the LDH and MDA levels of H9c2 cells induced by H2O2. Luciferase activity assay, quantitative real-time-PCR, and Western blot demonstrated that miR-190 directly targets MAPK8. Rescue experiment confirmed this hypothesis. Further study has revealed that miR-190 protects H9c2 cells from oxidative stress injury through inhibiting the MAPK8/ERK signal pathway. In conclusion, these data suggest that miR-190 protects against oxidative stress injury of H9c2 cells induced by H2O2 through inhibiting MAPK8 expression and the MAPK8/ERK pathway. Our findings provide a potential therapeutic target to promote functional recovery after cardiac ischemia/reperfusion.
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Affiliation(s)
- Chang-Lin Zhai
- Department of Cardiovascular Diseases, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong UniversityShanghai, P. R. China
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Jiaxing UniversityJiaxing, P. R China
| | - Guan-Min Tang
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Jiaxing UniversityJiaxing, P. R China
| | - Gang Qian
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Jiaxing UniversityJiaxing, P. R China
| | - Bing-Jiang Han
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Jiaxing UniversityJiaxing, P. R China
| | - Hui-Lin Hu
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Jiaxing UniversityJiaxing, P. R China
| | - Shi-Jun Wang
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Jiaxing UniversityJiaxing, P. R China
| | - Dong Yin
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Jiaxing UniversityJiaxing, P. R China
| | - Hai-Hua Pan
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Jiaxing UniversityJiaxing, P. R China
| | - Song Zhang
- Department of Cardiovascular Diseases, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong UniversityShanghai, P. R. China
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Hosseini MK, Gunel T, Gumusoglu E, Benian A, Aydinli K. MicroRNA expression profiling in placenta and maternal plasma in early pregnancy loss. Mol Med Rep 2018; 17:4941-4952. [PMID: 29393376 PMCID: PMC5865953 DOI: 10.3892/mmr.2018.8530] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/14/2017] [Indexed: 01/03/2023] Open
Abstract
Early pregnancy loss (EPL), also termed early miscarriage, is determined as the unintentional expulsion of an embryo or fetus prior to the 12th week of gestation. EPL frequency is ~15% in pregnancies. Fetal development and growth is associate with placental function and vessel development; therefore, the placental genome would represent a useful miscarriage model for (epi)genetic and genomic studies. An important factor of placental development and function is epigenetic regulation of gene expression. microRNAs (miRNAs) are the primary epigenetic regulators which have an important role in placental development and function. In the present study, maternal plasma and villous tissue were collected from 16 EPL cases in 6th-8th gestational weeks (GWs) and 8 abortions (control group) in 6th-8th GWs. Detection of the differences in miRNA expression was performed using microarrays and dysregulated miRNAs were validated by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). miRNA microarray findings revealed that four miRNAs, including hsa-miRNA (miR)-125a-3p, hsa-miR-3663-3p, hsa-miR-423-5p and hsa-miR-575 were upregulated in tissue samples. In maternal plasma, two miRNAs (hsa-let-7c, hsa-miR-122) were upregulated and one miRNA (hsa-miR-135a) was downregulated. A total of 6 out of 7 dysregulated miRNAs were validated using RT-qPCR. The target genes of these dysregulated miRNAs were detected using the GeneSpring database. The aim of the present study was to detect dysregulated miRNAs in maternal plasma and villous cells and identify the target genes of dysregulated miRNAs and their associated pathways. The target gene analyses have revealed that the affected genes are primarily associated with cell migration, proliferation, implantation, adhesion, angiogenesis and differentiation and all are involved with EPL pathogenesis. Therefore, the present study may contribute to the understanding of the molecular mechanisms which lead to EPL.
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Affiliation(s)
- Mohammad Kazem Hosseini
- Department of Molecular Biology and Genetics, Faculty of Science, Istanbul University, Istanbul 34134, Turkey
| | - Tuba Gunel
- Department of Molecular Biology and Genetics, Faculty of Science, Istanbul University, Istanbul 34134, Turkey
| | - Ece Gumusoglu
- Department of Molecular Biology and Genetics, Faculty of Science, Istanbul University, Istanbul 34134, Turkey
| | - Ali Benian
- Department of Obstetrics and Gynecology, Cerrahpasa Medical Faculty, Istanbul University, Istanbul 34098, Turkey
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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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