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Xie J, Tang Z, Chen Q, Jia X, Li C, Jin M, Wei G, Zheng H, Li X, Chen Y, Liao W, Liao Y, Bin J, Huang S. Clearance of Stress-Induced Premature Senescent Cells Alleviates the Formation of Abdominal Aortic Aneurysms. Aging Dis 2023; 14:1778-1798. [PMID: 37196124 PMCID: PMC10529745 DOI: 10.14336/ad.2023.0215] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 02/15/2023] [Indexed: 05/19/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is a multifactorial disease characterized by various pathophysiological processes, including chronic inflammation, oxidative stress, and proteolytic activity in the aortic wall. Stress-induced premature senescence (SIPS) has been implicated in regulating these pathophysiological processes, but whether SIPS contributes to AAA formation remains unknown. Here, we detected SIPS in AAA from patients and young mice. The senolytic agent ABT263 prevented AAA development by inhibiting SIPS. Additionally, SIPS promoted the transformation of vascular smooth muscle cells (VSMCs) from a contractile phenotype to a synthetic phenotype, whereas inhibition of SIPS by the senolytic drug ABT263 suppressed VSMC phenotypic switching. RNA sequencing and single-cell RNA sequencing analysis revealed that fibroblast growth factor 9 (FGF9), secreted by stress-induced premature senescent VSMCs, was a key regulator of VSMC phenotypic switching and that FGF9 knockdown abolished this effect. We further showed that the FGF9 level was critical for the activation of PDGFRβ/ERK1/2 signaling, facilitating VSMC phenotypic change. Taken together, our findings demonstrated that SIPS is critical for VSMC phenotypic switching through the activation of FGF9/PDGFRβ/ERK1/2 signaling, promoting AAA development and progression. Thus, targeting SIPS with the senolytic agent ABT263 may be a valuable therapeutic strategy for the prevention or treatment of AAA.
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Affiliation(s)
- Jingfang Xie
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Zhenquan Tang
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Qiqi Chen
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Xiaoqian Jia
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Chuling Li
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Ming Jin
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Guoquan Wei
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Hao Zheng
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Xinzhong Li
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Yanmei Chen
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Wangjun Liao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Yulin Liao
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Jianping Bin
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
| | - Senlin Huang
- Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China.
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2
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Zhong XQ, Hao TF, Zhu QJ, Zheng J, Zheng MF, Li XH, Luo LH, Xia CS, Fan YW, Gu J, Liu T, Chen DJ. Umbilical cord blood exosomes from very preterm infants with bronchopulmonary dysplasia aggravate lung injury in mice. Sci Rep 2023; 13:8648. [PMID: 37244977 DOI: 10.1038/s41598-023-35620-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/21/2023] [Indexed: 05/29/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD) is characterized by abnormal development of the blood vessels and alveoli in lungs, which largely occurs in premature infants. Exosomes (EXO) from very preterm infants (VPI) with BPD (BPD-EXO) impair angiogenic activities of human umbilical vein endothelial cells (HUVECs) via EXO-miRNAs cargo. This study aimed to determine whether and how BPD-EXO affect the development of BPD in a mouse model. We showed that treating BPD mice with BPD-EXO chronically and irreversibly aggravated lung injury. BPD-EXO up-regulated 139 and down-regulated 735 genes in the mouse lung tissue. These differentially expressed genes were enriched to the MAPK pathway (e.g., Fgf9 and Cacna2d3), which is critical to angiogenesis and vascular remodeling. BPD-EXO suppressed expression of Fgf9 and Cacna2d3 in HUVECs and inhibited migration, tube formation, and increased cell apoptosis in HUVECs. These data demonstrate that BPD-EXO aggravate lung injury in BPD mice and impair lung angiogenesis, plausibly leading to adverse outcomes of VPI with BPD. These data also suggest that BPD-EXO could serve as promising targets for predicting and treating BPD.
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Affiliation(s)
- Xin-Qi Zhong
- Department of Neonatology, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, 510150, China.
- Key Laboratory for Major Obstetric Disease of Guangdong Province, Guangzhou, China.
| | - Tao-Fang Hao
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Qi-Jiong Zhu
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, 510632, China
- China Greater Bay Area Research Center of Environmental Health, School of Medicine, Jinan University, Guangzhou, China
| | - Jing Zheng
- Department of Obstetrics and Gynecology, University of WI-Madison, Madison, WI, USA
| | - Mao-Fei Zheng
- Department of Neonatology, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, 510150, China
| | - Xiu-Hong Li
- Department of Maternal and Child Health, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Li-Hua Luo
- Department of Neonatology, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, 510150, China
| | - Chang-Shun Xia
- Department of Neonatology, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, 510150, China
| | - Yu-Wei Fan
- Department of Neonatology, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, 510150, China
| | - Jian Gu
- Department of Neonatology, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, 510150, China
| | - Tao Liu
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, 510632, China.
- China Greater Bay Area Research Center of Environmental Health, School of Medicine, Jinan University, Guangzhou, China.
| | - Dun-Jin Chen
- Key Laboratory for Major Obstetric Disease of Guangdong Province, Guangzhou, China.
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, Guangdong, China.
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3
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Wang G, Luo Y, Gao X, Liang Y, Yang F, Wu J, Fang D, Luo M. MicroRNA regulation of phenotypic transformations in vascular smooth muscle: relevance to vascular remodeling. Cell Mol Life Sci 2023; 80:144. [PMID: 37165163 PMCID: PMC11071847 DOI: 10.1007/s00018-023-04793-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/10/2023] [Accepted: 04/27/2023] [Indexed: 05/12/2023]
Abstract
Alterations in the vascular smooth muscle cells (VSMC) phenotype play a critical role in the pathogenesis of several cardiovascular diseases, including hypertension, atherosclerosis, and restenosis after angioplasty. MicroRNAs (miRNAs) are a class of endogenous noncoding RNAs (approximately 19-25 nucleotides in length) that function as regulators in various physiological and pathophysiological events. Recent studies have suggested that aberrant miRNAs' expression might underlie VSMC phenotypic transformation, appearing to regulate the phenotypic transformations of VSMCs by targeting specific genes that either participate in the maintenance of the contractile phenotype or contribute to the transformation to alternate phenotypes, and affecting atherosclerosis, hypertension, and coronary artery disease by altering VSMC proliferation, migration, differentiation, inflammation, calcification, oxidative stress, and apoptosis, suggesting an important regulatory role in vascular remodeling for maintaining vascular homeostasis. This review outlines recent progress in the discovery of miRNAs and elucidation of their mechanisms of action and functions in VSMC phenotypic regulation. Importantly, as the literature supports roles for miRNAs in modulating vascular remodeling and for maintaining vascular homeostasis, this area of research will likely provide new insights into clinical diagnosis and prognosis and ultimately facilitate the identification of novel therapeutic targets.
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Affiliation(s)
- Gang Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, Drug Discovery Research Center, Southwest Medical University, Longmatan District, No. 1, Section 1, Xianglin Road, Luzhou, Sichuan, China
- Laboratory for Cardiovascular Pharmacology of Department of Pharmacology, the School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
- School of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Yulin Luo
- GCP Center, Affiliated Hospital (Traditional Chinese Medicine) of Southwest Medical University, Luzhou, China
| | - Xiaojun Gao
- Key Laboratory of Medical Electrophysiology, Ministry of Education, Drug Discovery Research Center, Southwest Medical University, Longmatan District, No. 1, Section 1, Xianglin Road, Luzhou, Sichuan, China
- Laboratory for Cardiovascular Pharmacology of Department of Pharmacology, the School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Yu Liang
- Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Traditional Chinese Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Feifei Yang
- School of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Jianbo Wu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, Drug Discovery Research Center, Southwest Medical University, Longmatan District, No. 1, Section 1, Xianglin Road, Luzhou, Sichuan, China
- Laboratory for Cardiovascular Pharmacology of Department of Pharmacology, the School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Dan Fang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, Drug Discovery Research Center, Southwest Medical University, Longmatan District, No. 1, Section 1, Xianglin Road, Luzhou, Sichuan, China.
- Laboratory for Cardiovascular Pharmacology of Department of Pharmacology, the School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.
| | - Mao Luo
- Key Laboratory of Medical Electrophysiology, Ministry of Education, Drug Discovery Research Center, Southwest Medical University, Longmatan District, No. 1, Section 1, Xianglin Road, Luzhou, Sichuan, China.
- Laboratory for Cardiovascular Pharmacology of Department of Pharmacology, the School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.
- Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Traditional Chinese Medicine, Southwest Medical University, Luzhou, Sichuan, China.
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4
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Sun Y, Su S, Li M, Deng A. Inhibition of miR-182-5p Targets FGF9 to Alleviate Osteoarthritis. Anal Cell Pathol (Amst) 2023; 2023:5911546. [PMID: 37035017 PMCID: PMC10076120 DOI: 10.1155/2023/5911546] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 03/02/2023] [Accepted: 03/10/2023] [Indexed: 03/31/2023] Open
Abstract
Background. The pathogenesis of osteoarthritis (OA) is complex and there is no specific drug for treatment. The aim of this study was to identify the molecular targets of OA therapy, focusing on the expression and biological functions of miR-182-5p and its target genes in OA. Methods. miR-182-5p and fibroblast growth factor 9 (FGF9) were overexpressed or knocked down in IL-1β-induced chondrocytes. An OA knee model was performed by surgically destroying the medial meniscus. The gene expression of miR-182-5p and FGF9 was calculated. The protein FGF9 was tested by western blotting. Cell counting kit-8 (CCK8), plate cloning assay, and flow cytometry were conducted to evaluate cell proliferation and apoptosis. The expression of inflammatory factors, tumor necrosis factor-alpha (TNF-α), interleukin (IL)-6, and interleukin (IL)-8, was evaluated using enzyme-linked immunosorbent assay (ELISA). Dual-luciferase reporter assays validated the targeting relationship between miR-182-5p and FGF9. Hematoxylin–eosin (HE) and safranin O-fast Green (S–O) staining were utilized to access cartilage damage. Ki67 expression in cartilage was detected using immunohistochemistry (IHC). TdT-mediated dUTP nick-end labeling (TUNEL) assays were used to calculate the apoptosis rate of cartilage. Results. The expression of miR-182-5p was upregulated, and FGF9 was downregulated in the IL-1β-induced chondrocytes. OA chondrocytes proliferation ability in the miR-182-5p mimics group was decreased, and the apoptosis rate and inflammatory factor were increased. Transfection with miR-182-5p inhibitor increased the proliferative ability and decreased the apoptosis rate in the IL-1β-induced chondrocytes. Transfection with miR-182-5p inhibitor reversed IL-1β-induced inflammatory factor release in chondrocytes. Targeted binding sites existed between miR-182-5p and FGF9. After overexpression of FGF9, the miR-182-5p effect on OA chondrocytes was reversed. The hyaline cartilage thickness and proteoglycan content decreased in OA rats, and this was reversed by miR-182-5p inhibitor treatment. Conclusions. miR-182-5p expression levels were increased in OA chondrocytes and regulated chondrocyte proliferation, apoptosis, and inflammation by targeting FGF9. miR-182-5p is a potential gene for OA treatment.
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5
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Khachigian LM, Black BL, Ferdinandy P, De Caterina R, Madonna R, Geng YJ. Transcriptional regulation of vascular smooth muscle cell proliferation, differentiation and senescence: Novel targets for therapy. Vascul Pharmacol 2022; 146:107091. [PMID: 35896140 DOI: 10.1016/j.vph.2022.107091] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 10/16/2022]
Abstract
Vascular smooth muscle cells (SMC) possess a unique cytoplasticity, regulated by transcriptional, translational and phenotypic transformation in response to a diverse range of extrinsic and intrinsic pathogenic factors. The mature, differentiated SMC phenotype is physiologically typified transcriptionally by expression of genes encoding "contractile" proteins, such as SMα-actin (ACTA2), SM-MHC (myosin-11) and SM22α (transgelin). When exposed to various pathological conditions (e.g., pro-atherogenic risk factors, hypertension), SMC undergo phenotypic modulation, a bioprocess enabling SMC to de-differentiate in immature stages or trans-differentiate into other cell phenotypes. As recent studies suggest, the process of SMC phenotypic transformation involves five distinct states characterized by different patterns of cell growth, differentiation, migration, matrix protein expression and declined contractility. These changes are mediated via the action of several transcriptional regulators, including myocardin and serum response factor. Conversely, other factors, including Kruppel-like factor 4 and nuclear factor-κB, can inhibit SMC differentiation and growth arrest, while factors such as yin yang-1, can promote SMC differentiation whilst inhibiting proliferation. This article reviews recent advances in our understanding of regulatory mechanisms governing SMC phenotypic modulation. We propose the concept that transcription factors mediating this switching are important biomarkers and potential pharmacological targets for therapeutic intervention in cardiovascular disease.
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Affiliation(s)
- Levon M Khachigian
- Vascular Biology and Translational Research, Department of Pathology, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Brian L Black
- Cardiovascular Research Institute, University of California, San Francisco, CA, United States of America
| | - Péter Ferdinandy
- Cardiovascular and Metabolic Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; Pharmahungary Group, 6722 Szeged, Hungary
| | - Raffaele De Caterina
- Cardiovascular Division, Pisa University Hospital & University of Pisa, Via Paradisa, 2, Pisa 56124, Italy
| | - Rosalinda Madonna
- Cardiovascular Division, Pisa University Hospital & University of Pisa, Via Paradisa, 2, Pisa 56124, Italy; Division of Cardiovascular Medicine, Department of Internal Medicine, The Center for Cardiovascular Biology and Atherosclerosis Research, McGovern School of Medicine, University of Texas Health Science Center at Houston, Houston, TX, United States of America
| | - Yong-Jian Geng
- Division of Cardiovascular Medicine, Department of Internal Medicine, The Center for Cardiovascular Biology and Atherosclerosis Research, McGovern School of Medicine, University of Texas Health Science Center at Houston, Houston, TX, United States of America
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Chen L, Xu J, Lv S, Zhao Y, Sun D, Zheng Y, Li X, Zhang L, Chi G, Li Y. Overexpression of long non-coding RNA AP001505.9 inhibits human hyaline chondrocyte dedifferentiation. Aging (Albany NY) 2021; 13:11433-11454. [PMID: 33839696 PMCID: PMC8109079 DOI: 10.18632/aging.202833] [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: 12/08/2020] [Accepted: 02/18/2021] [Indexed: 12/21/2022]
Abstract
Autologous chondrocyte implantation (ACI) is an effective method for treating chronic articular cartilage injury and degeneration; however, it requires large numbers of hyaline chondrocytes, and human hyaline chondrocytes often undergo dedifferentiation in vitro. Moreover, although long non-coding RNAs (lncRNAs) regulate gene expression in many pathological and physiological processes, their role in human hyaline chondrocyte dedifferentiation remains unclear. Here, we examined lncRNA and mRNA expression profiles in human hyaline chondrocyte dedifferentiation using microarray analysis. Among the many lncRNAs and mRNAs that showed differential expression, lncRNA AP001505.9 (ENST00000569966) was significantly downregulated in chondrocytes after dedifferentiation. We next performed gene ontology, pathway, and CNC (coding-non-coding gene co-expression) analyses to investigate potential regulatory mechanisms for AP001505.9. Pellet cultures were then used to redifferentiate dedifferentiated chondrocytes, and AP001505.9 expression was upregulated after redifferentiation. Finally, both in vitro and in vivo experiments demonstrated that AP001505.9 overexpression inhibited dedifferentiation of chondrocytes. This study characterizes lncRNA expression profiles in human hyaline chondrocyte dedifferentiation, thereby identifying new potential mechanisms of chondrocyte dedifferentiation worthy of further investigation.
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Affiliation(s)
- Lin Chen
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China.,Department of Gastrointestinal and Colorectal Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Jinying Xu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
| | - Shuang Lv
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
| | - Yan Zhao
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China.,Department of Operating Room, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Dongjie Sun
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
| | - Yangyang Zheng
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
| | - Xianglan Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China.,Department of Dermatology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Lihong Zhang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
| | - Guangfan Chi
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
| | - Yulin Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
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7
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Uray K, Major E, Lontay B. MicroRNA Regulatory Pathways in the Control of the Actin-Myosin Cytoskeleton. Cells 2020; 9:E1649. [PMID: 32660059 PMCID: PMC7408560 DOI: 10.3390/cells9071649] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/03/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRNAs) are key modulators of post-transcriptional gene regulation in a plethora of processes, including actin-myosin cytoskeleton dynamics. Recent evidence points to the widespread effects of miRNAs on actin-myosin cytoskeleton dynamics, either directly on the expression of actin and myosin genes or indirectly on the diverse signaling cascades modulating cytoskeletal arrangement. Furthermore, studies from various human models indicate that miRNAs contribute to the development of various human disorders. The potentially huge impact of miRNA-based mechanisms on cytoskeletal elements is just starting to be recognized. In this review, we summarize recent knowledge about the importance of microRNA modulation of the actin-myosin cytoskeleton affecting physiological processes, including cardiovascular function, hematopoiesis, podocyte physiology, and osteogenesis.
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Affiliation(s)
- Karen Uray
- Correspondence: (K.U.); (B.L.); Tel.: +36-52-412345 (K.U. & B.L.)
| | | | - Beata Lontay
- Correspondence: (K.U.); (B.L.); Tel.: +36-52-412345 (K.U. & B.L.)
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8
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Sun L, Lin P, Chen Y, Yu H, Ren S, Wang J, Zhao L, Du G. miR-182-3p/Myadm contribute to pulmonary artery hypertension vascular remodeling via a KLF4/p21-dependent mechanism. Theranostics 2020; 10:5581-5599. [PMID: 32373233 PMCID: PMC7196306 DOI: 10.7150/thno.44687] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 04/07/2020] [Indexed: 12/19/2022] Open
Abstract
Rationale: There is a continued need for investigating the roles of microRNAs and their targets on the pathogenesis of pulmonary arterial hypertension (PAH) vascular remodeling. We recently identified the association of myeloid miR-182-3p and its new target, Myeloid-Associated Differentiation Marker (Myadm), with vascular remodeling. Here, we aimed to determine the role of miR-182-3p/Myadm on PAH vascular remodeling and the underlying molecular mechanism. Methods: The miR-182-3p/Myadm expression profiles were detected in PAH patients and experimental rodent models. Loss-of-function and gain-of-function studies using gene knock-in or gene knock-out and the combinations of the proteomic technology and genome-wide ChIP-Seq were employed to determine the downstream targets of miR-182-3p/Myadm in response to monocrotaline (MCT)-induced PAH. Results: The miR-182-3p/Myadm expression was altered in PAH patients and experimental rodent models. Both miR-182-3p inhibitor and overexpression of Myadm augmented the pathological progression in rats in response to MCT-induced PAH. In contrast, miR-182-3p mimic and Myadm gene knockout attenuated the changes in the hemodynamics and structure of the cardio-pulmonary system in MCT-induced PAH in rats. Myadm mediated the proliferation of pulmonary artery smooth muscle cells (PASMCs) by altering the cell cycle kinase inhibitor (p21/Cip1) expression through the transcription factor Krüppel-like factor 4 (KLF4) translocation into the cytoplasm. Conclusion: Our findings indicate the prognostic and therapeutic significance of miR-182-3p in PAH and provide a new regulatory model of the myeloid-derived miR-182-3p/Myadm/KLF4/p21 axis in PAH vascular remodeling.
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Affiliation(s)
- Lan Sun
- Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College,1 Xian Nong Tan Street, Beijing 100050, China
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines 1 Xian Nong Tan Street, Beijing 100050, China
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening Beijing 100050, China
| | - Peirong Lin
- Department of anesthesiology, Beijing Anzhen Hospital, Capital Medical University, and Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing 100029, China
| | - Ying Chen
- Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College,1 Xian Nong Tan Street, Beijing 100050, China
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening Beijing 100050, China
| | - Haoying Yu
- Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College,1 Xian Nong Tan Street, Beijing 100050, China
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines 1 Xian Nong Tan Street, Beijing 100050, China
| | - Shuyu Ren
- Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College,1 Xian Nong Tan Street, Beijing 100050, China
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening Beijing 100050, China
| | - Jingrong Wang
- Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College,1 Xian Nong Tan Street, Beijing 100050, China
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening Beijing 100050, China
| | - Liyun Zhao
- Department of anesthesiology, Beijing Anzhen Hospital, Capital Medical University, and Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing 100029, China
| | - Guanhua Du
- Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College,1 Xian Nong Tan Street, Beijing 100050, China
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines 1 Xian Nong Tan Street, Beijing 100050, China
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening Beijing 100050, China
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9
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Gasiulė S, Stankevičius V, Patamsytė V, Ražanskas R, Žukovas G, Kapustina Ž, Žaliaduonytė D, Benetis R, Lesauskaitė V, Vilkaitis G. Tissue-Specific miRNAs Regulate the Development of Thoracic Aortic Aneurysm: The Emerging Role of KLF4 Network. J Clin Med 2019; 8:jcm8101609. [PMID: 31623405 PMCID: PMC6832203 DOI: 10.3390/jcm8101609] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 09/27/2019] [Accepted: 09/27/2019] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs (miRNAs) are critical regulators of the functional pathways involved in the pathogenesis of cardiovascular diseases. Understanding of the disease-associated alterations in tissue and plasma will elucidate the roles of miRNA in modulation of gene expression throughout development of sporadic non-syndromic ascending thoracic aortic aneurysm (TAA). This will allow one to propose relevant biomarkers for diagnosis or new therapeutic targets for the treatment. The high-throughput sequencing revealed 20 and 17 TAA-specific miRNAs in tissue and plasma samples, respectively. qRT-PCR analysis in extended cohort revealed sex-related differences in miR-10a-5p, miR-126-3p, miR-155-5p and miR-148a-3p expression, which were the most significantly dysregulated in TAA tissues of male patients. Unexpectedly, the set of aneurysm-related miRNAs in TAA plasma did not resemble the tissue signature suggesting more complex organism response to the disease. Three of TAA-specific plasma miRNAs were found to be restored to normal level after aortic surgery, further signifying their relationship to the pathology. The panel of two plasma miRNAs, miR-122-3p, and miR-483-3p, could serve as a potential biomarker set (AUC = 0.84) for the ascending TAA. The miRNA-target enrichment analysis exposed TGF-β signaling pathway as sturdily affected by abnormally expressed miRNAs in the TAA tissue. Nearly half of TAA-specific miRNAs potentially regulate a key component in TGF-β signaling: TGF-β receptors, SMADs and KLF4. Indeed, using immunohistochemistry analysis we detected increased KLF4 expression in 27% of TAA cells compared to 10% of non-TAA cells. In addition, qRT-PCR demonstrated a significant upregulation of ALK1 mRNA expression in TAA tissues. Overall, these observations indicate that the alterations in miRNA expression are sex-dependent and play an essential role in TAA via TGF-β signaling.
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Affiliation(s)
- Stasė Gasiulė
- Institute of Biotechnology, Vilnius University, LT-10257 Vilnius, Lithuania.
| | | | - Vaiva Patamsytė
- Institute of Cardiology, Lithuanian University of Health Sciences, LT-50103 Kaunas, Lithuania.
| | - Raimundas Ražanskas
- Institute of Biotechnology, Vilnius University, LT-10257 Vilnius, Lithuania.
| | - Giedrius Žukovas
- Department of Cardiac, Thoracic and Vascular Surgery, Lithuanian University of Health Sciences, LT-50103 Kaunas, Lithuania.
| | - Žana Kapustina
- Thermo Fisher Scientific Baltics, LT-02241 Vilnius, Lithuania.
| | - Diana Žaliaduonytė
- Department of Cardiology, Lithuanian University of Health Sciences, LT-50161 Kaunas, Lithuania.
| | - Rimantas Benetis
- Institute of Cardiology, Lithuanian University of Health Sciences, LT-50103 Kaunas, Lithuania.
| | - Vaiva Lesauskaitė
- Institute of Cardiology, Lithuanian University of Health Sciences, LT-50103 Kaunas, Lithuania.
| | - Giedrius Vilkaitis
- Institute of Biotechnology, Vilnius University, LT-10257 Vilnius, Lithuania.
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10
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Mohamed WA, Schaalan MF, Ramadan B. The expression profiling of circulating miR-204, miR-182, and lncRNA H19 as novel potential biomarkers for the progression of peptic ulcer to gastric cancer. J Cell Biochem 2019; 120:13464-13477. [PMID: 30945348 DOI: 10.1002/jcb.28620] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/17/2019] [Accepted: 02/28/2019] [Indexed: 12/17/2022]
Abstract
Deregulation of noncoding RNAs, microRNAs (miRNAs) and long noncoding RNA (lncRNA), are implicated in the initiation and progression of gastric cancer (GC). This study is a pilot case-control study carried out on 75 subjects, 40 of them were Helicobacter pylori-gastric ulcer patients and 35 were GC patients recruited from the Gastrointestinal Endoscopy Unit in Al-Kasr Al-Aini Hospital, Cairo University in Egypt. Real-time PCR was performed to evaluate the expression level of serum miR-204, miR-182, and lncRNA H19 in patients with peptic ulcer-progressed GC vs nonprogressed peptic ulcer patients. Fibroblast growth factor 18 (FGF-18)/FGF receptor 2 (FGFR2) expression and their downstream immunological and inflammatory signaling markers were assessed and their association with the addressed noncoding RNAs investigated. As regards miR-204 and miR-182, they were significantly increased (12.5 and 2.6 folds, respectively) in GU samples, compared with those of healthy control levels. The elevated levels of these miRNAs were significantly de-escalated in GC samples compared with GU and the fold decrease valued 2.2 fold for miR-204 and 1.8 folds for miR-182. On the other hand, the significant escalation in the level of lnRNA H19 in GU recorded a 16.6 fold increase and further elevation in its levels was evident in GC samples. The herein assessed miRNAs are correlated with disease duration and FGFR2 with miR-182 being significantly correlated with all inflammatory markers, TAC, INF-γ, matrix metallopeptidase 9, and FGF-18. In terms of diagnostic accuracy of assessed miRNAs (stages III to IV), the receiver operating characteristic analysis indicated that serum lncRNA H19 showed the highest diagnostic accuracy (95.5%), specificity (100%), and sensitivity (90.9%), compared with miR-204 and miR-182, which showed the same specificity (60%), sensitivity (72.7%), and diagnostic accuracy (68.8%). Our findings conclude that lnRNA H19, miR-204, and miR-182 may function as novel prospective plasma biomarkers to detect GC and its progression from H. pylori-peptic ulcer, which would be helpful to improve the theranostics of GC.
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Affiliation(s)
- Waleed A Mohamed
- Department of Chemistry, Kasr El Aini Teaching Hospital, Cairo University, Cairo, Egypt
| | - Mona F Schaalan
- Department of Clinical Pharmacy and Pharmacy Practice, Clinical and Translational Research Unit, Faculty of Pharmacy, Misr International University, Cairo, Egypt
| | - Basma Ramadan
- Department of Physiology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
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11
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Fang L, Zhang PF, Wang KK, Xiao ZL, Yang M, Yu ZX. Nucleolin promotes Ang II‑induced phenotypic transformation of vascular smooth muscle cells via interaction with tropoelastin mRNA. Int J Mol Med 2019; 43:1597-1610. [PMID: 30720050 PMCID: PMC6414172 DOI: 10.3892/ijmm.2019.4090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 01/16/2019] [Indexed: 12/31/2022] Open
Abstract
The current study aimed to clarify the role of nucleolin in the phenotypic transformation of vascular smooth muscle cells (VSMCs) and to preliminarily explore its underlying mechanism. The spatial and temporal expression patterns of nucleolin, and the effects of angiotensin II (Ang II) on the expression of VSMC phenotypic transformation markers, α‑smooth muscle‑actin, calponin, smooth muscle protein 22α and osteopontin were investigated. The effects of nucleolin on VSMC phenotypic transformation and the expression of phenotypic transformation‑associated genes, tropoelastin, epiregulin and fibroblast growth factor 2 (b‑FGF), were determined. Protein‑RNA co‑immunoprecipitation was used to investigate the potential target genes regulated by the nucleolin in phenotypic transformation of VSMCs. Finally, the stability of tropoelastin mRNA and the effects of nucleolin on the expression of tropoelastin were assayed. The results revealed that Ang II significantly promoted the phenotypic transformation of VSMCs. The expression of nucleolin was gradually upregulated in VSMCs treated with Ang II at different concentrations for various durations. Ang II induced nucleolin translocation from the nucleus to cytoplasm. Additionally, Ang II significantly promoted the phenotypic transformation of VSMCs. Overexpression and silencing of nucleolin regulated the expressions of tropoelastin, epiregulin and b‑FGF. There was an interaction between tropoelastin mRNA and nucleolin protein, promoting the stability of tropoelastin mRNA and enhancing the expression of tropoelastin at the protein level. Upregulation of nucleolin had an important role in Ang II‑induced VSMC phenotypic transformation, and its underlying mechanism may be through interacting with tropoelastin mRNA, leading to its increased stability and protein expression. The findings provide a new perspective into the regulatory mechanism of VSMC phenotypic transformation.
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Affiliation(s)
| | - Peng-Fei Zhang
- Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University
| | - Kang-Kai Wang
- Department of Pathophysiology, Xiangya School of Medicine
| | - Zhi-Lin Xiao
- Department of Geriatric Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Mei Yang
- Department of Geriatric Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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12
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Duan X, Gan J, Peng DY, Bao Q, Xiao L, Wei L, Wu J. Identification and functional analysis of microRNAs in rats following focal cerebral ischemia injury. Mol Med Rep 2019; 19:4175-4184. [PMID: 30896823 PMCID: PMC6471137 DOI: 10.3892/mmr.2019.10073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 02/22/2019] [Indexed: 01/08/2023] Open
Abstract
MicroRNA sequencing (miRNA‑seq) was performed in the present study to investigate miRNA expression profiles in infarcted brain areas following focal cerebral ischemia induced by middle cerebral artery occlusion in rats. In total, 20 miRNAs were identified to be upregulated and 17 to be downregulated in the infarct area. The expression levels of six differentially expressed miRNAs (DEmiRs), miR‑211‑5p, miR‑183‑5p, miR‑10b‑3p, miR‑182, miR‑217‑5p and miR‑96‑5p, were examined by reverse transcription‑quantitative polymerase chain reaction. Subsequently, a miRNA‑mRNA network was constructed. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses were performed to investigate the functions of the mRNAs targeted by these DEmiRs. The present study aimed to investigate the association between miRNAs and cerebral ischemia to provide potential insight into the molecular mechanisms underlying ischemic stroke.
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Affiliation(s)
- Xianchun Duan
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Jianghua Gan
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Dai-Yin Peng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Qiuyu Bao
- School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P.R. China
| | - Ling Xiao
- School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P.R. China
| | - Liangbing Wei
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Jian Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
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13
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Sun QR, Zhang X, Fang K. Phenotype of Vascular Smooth Muscle Cells (VSMCs) Is Regulated by miR-29b by Targeting Sirtuin 1. Med Sci Monit 2018; 24:6599-6607. [PMID: 30231015 PMCID: PMC6354642 DOI: 10.12659/msm.910068] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background Phenotypic switch of vascular smooth muscle cells (VSMCs) participates in the etiology of various vascular diseases. It has been proved that microRNAs (miRNAs) serve as crucial regulators of functions of VSMCs. This study aimed to discover how miR-29b regulates the transformation of VSMCs phenotypes in mice. Material/Methods Primary VSMCs of aorta in mice were cultured in DMEM medium. A series of experiments involving transfection of oligonucleotides in cultured VSMCs, quantitative reverse transcription PCR (qRT-PCR), luciferase reporter assay, and Western blotting analysis were performed in this study. Results We found that in VSMCs cultured in presence of stimulator, platelet-derived growth factor-BB (PDGF-BB), miR-29b was upregulated significantly and expressions of VSMC-phenotype-related genes (α-SMA, calponin, and SM-MHC) were regulated by miR-29b. Moreover, through downregulation of sirtuin 1 (SIRT1), miR-29b affects phenotypic transformation of VSMCs. Luciferase report assay identified a significant increase of SIRT1 3′-UTR activity in treatment with miR-29b inhibitor, which, however, was reversed in the presence of miR-29b mimic. Suppression of miR-29b reversed the activation of NF-κB induced by PDGF-BB in VSMCs. Conclusions We concluded that miR-29b is an important regulator in the PDGF-BB-mediated VSMC phenotypic transition by targeting SIRT1. Interventions aimed at miR-29b may be promising in treating numerous proliferative vascular disorders.
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Affiliation(s)
- Qian-Ru Sun
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China (mainland)
| | - Xiong Zhang
- Department of Vascular Surgery, Fuwai Hospital, Chinese Academy of Medical Science and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, China (mainland)
| | - Kun Fang
- Department of Vascular Surgery, Fuwai Hospital, Chinese Academy of Medical Science and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, China (mainland)
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14
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Zhang Z, Jiang W, Yang H, Lin Q, Qin X. The miR-182/SORT1 axis regulates vascular smooth muscle cell calcification in vitro and in vivo. Exp Cell Res 2018; 362:324-331. [DOI: 10.1016/j.yexcr.2017.11.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/23/2017] [Accepted: 11/25/2017] [Indexed: 01/20/2023]
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15
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Cardiovascular Risk Factors and Markers. BIOMATHEMATICAL AND BIOMECHANICAL MODELING OF THE CIRCULATORY AND VENTILATORY SYSTEMS 2018. [PMCID: PMC7123062 DOI: 10.1007/978-3-319-89315-0_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cardiovascular risk is assessed for the prediction and appropriate management of patients using collections of identified risk markers obtained from clinical questionnaire information, concentrations of certain blood molecules (e.g., N-terminal proB-type natriuretic peptide fragment and soluble receptors of tumor-necrosis factor-α and interleukin-2), imaging data using various modalities, and electrocardiographic variables, in addition to traditional risk factors.
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16
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Yu J, Tian X, Chang J, Liu P, Zhang R. RUNX3 inhibits the proliferation and metastasis of gastric cancer through regulating miR-182/HOXA9. Biomed Pharmacother 2017; 96:782-791. [DOI: 10.1016/j.biopha.2017.08.144] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 08/25/2017] [Accepted: 08/28/2017] [Indexed: 01/11/2023] Open
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17
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Li K, Pan J, Wang J, Liu F, Wang L. MiR-665 regulates VSMCs proliferation via targeting FGF9 and MEF2D and modulating activities of Wnt/β-catenin signaling. Am J Transl Res 2017; 9:4402-4414. [PMID: 29118903 PMCID: PMC5666050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 08/01/2017] [Indexed: 06/07/2023]
Abstract
Abnormal proliferation of vascular smooth muscle cells (VSMCs) contributes to the development of cardiovascular diseases. Studies have showed the great impact of microRNAs (miRNAs) on the cell proliferation in VSMCs. This study examined the in vitro functional roles of miR-665 in the VSMCs and explored the underlying molecular mechanisms. The mRNA and protein expression levels were determined by qRT-PCR and western blot assays, respectively. CCK-8, transwell invasion and wound healing assays were performed to measure VSMCs proliferation, invasion and migration, respectively. The miR-665 targeted-3'UTR of fibroblast growth factor 9 (FGF9) and myocyte enhancer factor 2D (MEF2D) was confirmed by luciferase reporter assay. Platelet-derived growth factor-bb (PDGF-bb) and 20% serum promoted cell proliferation and suppressed the expression of miR-665 in VSMCs. In vitro functional assays demonstrated that miR-665 inhibited VSMCs proliferation, invasion and migration. Bioinformatics analysis showed that FGF9 and MEF2D were found to be downstream targets of miR-665. Luciferase report assay confirmed that FGF9 and MEF2D 3'UTRs are direct targets of miR-665, and miR-665 overexpression suppressed both the mRNA and protein expression levels of FGF9 and MEF2D. Furthermore, rescue experiments showed that enforced expression of FGF9 or MEF2D attenuated the inhibitory effects of miR-665 on VSMCs proliferation. More importantly, overexpression of miR-665 also suppressed the mRNA and protein expression levels of β-catenin, c-myc and cyclin D1. In summary, miR-665 suppressed the VSMCs proliferation, invasion and migration via targeting FGF9 and MEF2D, and the in vitro effects of miR-665 on VSMCs may be associated with modulation of Wnt/β-catenin signaling activities.
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Affiliation(s)
- Kai Li
- Department of Cardiology, The First Affiliated Hospital of Xi’an Medical UniversityXi’an, Shaanxi Province, China
| | - Jin Pan
- Clinical Medical College, Xi’an Medical UniversityXi’an, Shaanxi Province, China
| | - Jianjun Wang
- Department of Cardiology, The First Affiliated Hospital of Xi’an Medical UniversityXi’an, Shaanxi Province, China
| | - Fengrui Liu
- Department of Cardiology, The First Affiliated Hospital of Xi’an Medical UniversityXi’an, Shaanxi Province, China
| | - Li Wang
- Department of Cardiology, The First Affiliated Hospital of Xi’an Medical UniversityXi’an, Shaanxi Province, China
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