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Yu W, Zhang Q, Qiu Y, Chen H, Huang X, Xiao L, Xu G, Li S, Hu P, Tong X. CDN1163 alleviates SERCA2 dysfunction-induced pulmonary vascular remodeling by inhibiting the phenotypic transition of pulmonary artery smooth muscle cells. Clin Exp Hypertens 2023; 45:2272062. [PMID: 37899350 DOI: 10.1080/10641963.2023.2272062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 10/10/2023] [Indexed: 10/31/2023]
Abstract
BACKGROUND AND PURPOSE Substitution of Cys674 (C674) in the sarcoplasmic/endoplasmic reticulum Ca2+ ATPase 2 (SERCA2) causes SERCA2 dysfunction which leads to activated inositol requiring enzyme 1 alpha (IRE1α) and spliced X-box binding protein 1 (XBP1s) pathway accelerating cell proliferation of pulmonary artery smooth muscle cells (PASMCs) followed by significant pulmonary vascular remodeling resembling human pulmonary hypertension. Based on this knowledge, we intend to investigate other potential mechanisms involved in SERCA2 dysfunction-induced pulmonary vascular remodeling. EXPERIMENTAL APPROACH Heterozygous SERCA2 C674S knock-in (SKI) mice of which half of cysteine in 674 was substituted by serine to mimic the partial irreversible oxidation of C674 were used. The lungs of SKI mice and their littermate wild-type mice were collected for PASMC culture, protein expression, and pulmonary vascular remodeling analysis. RESULTS SERCA2 dysfunction increased intracellular Ca2+ levels, which activated Ca2+-dependent calcineurin (CaN) and promoted the nuclear translocation and protein expression of the nuclear factor of activated T-lymphocytes 4 (NFAT4) in an IRE1α/XBP1s pathway-independent manner. In SKI PASMCs, the scavenge of intracellular Ca2+ by BAPTA-AM or inhibition of CaN by cyclosporin A can prevent PASMC phenotypic transition. CDN1163, a SERCA2 agonist, suppressed the activation of CaN/NFAT4 and IRE1α/XBP1s pathways, reversed the protein expression of PASMC phenotypic transition markers and cell cycle-related proteins, and inhibited cell proliferation and migration when given to SKI PASMCs. Furthermore, CDN1163 ameliorated pulmonary vascular remodeling in SKI mice. CONCLUSIONS AND IMPLICATIONS SERCA2 dysfunction promotes PASMC phenotypic transition and pulmonary vascular remodeling by multiple mechanisms, which could be improved by SERCA2 agonist CDN1163.
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Affiliation(s)
- Weimin Yu
- Institute of Health Biological Chemical Medication, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
| | - Qian Zhang
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
| | - Yixiang Qiu
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
| | - Hui Chen
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
| | - Xiaoyang Huang
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
| | - Li Xiao
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
| | - Gang Xu
- Institute of Medicine and Equipment for High Altitude Region, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
- Key Laboratory of High Altitude Medicine, People's Liberation Army, Chongqing, China
| | - Siqi Li
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
- Central Clinical School, Monash University, Melbourne, Australia
| | - Pingping Hu
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Xiaoyong Tong
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
- Jinfeng Laboratory, Chongqing, China
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Lu Y, Li D, Shan L. MicroRNA153 induces apoptosis by targeting NFATc3 to improve vascular remodeling in pulmonary hypertension. Clin Exp Hypertens 2023; 45:2140810. [PMID: 36373478 DOI: 10.1080/10641963.2022.2140810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 10/22/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND The present study aimed to investigate the effect of microRNA153 (miRNA153) on pulmonary hypertension (PH). METHODS PH was induced by a single subcutaneous injection of sugen5416 (SU5416) combined with hypoxia exposure for 3 weeks (SuHx) in rats, while pulmonary arterial smooth muscle cells (PASMCs) obtained from rats were exposed to hypoxia to establish an in vitro model. Through observing the characteristic hemodynamic index in rats and by analyzing the physiological function, vascular remodeling and right ventricular hypertrophy were identified. The regulatory effects of miRNA153 on the nuclear factor of activated T cell isoform c3 (NFATc3) were measured by RT-qPCR, western blot, and immunofluorescence. Cell apoptosis was evaluated by flow cytometry. RESULTS The miRNA153 expression was reduced and unclear translation of NFATc3 was increased in both the in vivo and in vitro models of PH. In vivo, the pulmonary arterial pressure, right ventricle/(left ventricle + interventricular septum) (RV/(LV+S)), and media vascular thickness were increased in rats with PH; however, all these parameters were suppressed by prophylactic administration of miRNA153agomir. The upregulation of NFATc3 and downregulation of the potassium voltage-gated channel subfamily A member 5 (Kv1.5) were also reversed by transfection with miRNA153agomir. In vitro, miRNA153 increased the level of Kv1.5 in hypoxic PASMCs by targeting NFATc3 and inhibiting their proliferation and apoptosis resistance. CONCLUSION Our results confirmed that the therapeutic administration of miRNA153 promotes apoptosis and inhibits the proliferation of PASMCs to ameliorate PH, and that the NFATc3/Kv1.5 channel pathway may be involved in this process.
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Affiliation(s)
- Ya Lu
- Department of Respiratory Disease, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Dongyan Li
- Human Resources Department, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Lina Shan
- Department of Respiratory Disease, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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Wu YC, Wang WT, Yang MC, Su YT, Yeh JL, Hsu JH, Wu JR. The novel roles of YULINK in the migration, proliferation and glycolysis of pulmonary arterial smooth muscle cells: implications for pulmonary arterial hypertension. Biol Res 2023; 56:66. [PMID: 38057829 DOI: 10.1186/s40659-023-00480-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/22/2023] [Indexed: 12/08/2023] Open
Abstract
BACKGROUND Abnormal remodeling of the pulmonary vasculature, characterized by the proliferation and migration of pulmonary arterial smooth muscle cells (PASMCs) along with dysregulated glycolysis, is a pathognomonic feature of pulmonary arterial hypertension (PAH). YULINK (MIOS, Entrez Gene: 54468), a newly identified gene, has been recently shown to possess pleiotropic physiologic functions. This study aims to determine novel roles of YULINK in the regulation of PAH-related pathogenesis, including PASMC migration, proliferation and glycolysis. RESULTS Our results utilized two PAH-related cell models: PASMCs treated with platelet-derived growth factor (PDGF) and PASMCs harvested from monocrotaline (MCT)-induced PAH rats (PAH-PASMCs). YULINK modulation, either by knockdown or overexpression, was found to influence PASMC migration and proliferation in both models. Additionally, YULINK was implicated in glycolytic processes, impacting glucose uptake, glucose transporter 1 (GLUT1) expression, hexokinase II (HK-2) expression, and pyruvate production in PASMCs. Notably, YULINK and GLUT1 were observed to colocalize on PASMC membranes under PAH-related pathogenic conditions. Indeed, increased YULINK expression was also detected in the pulmonary artery of human PAH specimen. Furthermore, YULINK inhibition led to the suppression of platelet-derived growth factor receptor (PDGFR) and the phosphorylation of focal adhesion kinase (FAK), phosphoinositide 3-kinase (PI3K), and protein kinase B (AKT) in both cell models. These findings suggest that the effects of YULINK are potentially mediated through the PI3K-AKT signaling pathway. CONCLUSIONS Our findings indicate that YULINK appears to play a crucial role in the migration, proliferation, and glycolysis in PASMCs and therefore positioning it as a novel promising therapeutic target for PAH.
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Affiliation(s)
- Yi-Chia Wu
- Division of Plastic Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
- Department of Plastic Surgery, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, 80145, Taiwan
- Department of Surgery, School of Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Wei-Ting Wang
- Division of Plastic Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Ming-Chun Yang
- Department of Pediatrics, E-Da Hospital/I-Shou University, No. 1, Yi-Da Road, Jiao-Su Village, Yan-Chao District, Kaohsiung, 82445, Taiwan
- Department of Pediatrics, School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Yu-Tsun Su
- Department of Pediatrics, E-Da Hospital/I-Shou University, No. 1, Yi-Da Road, Jiao-Su Village, Yan-Chao District, Kaohsiung, 82445, Taiwan
- Department of Pediatrics, School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Jwu-Lai Yeh
- Department of Pharmacology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jong-Hau Hsu
- Division of Pediatric Cardio-Pulmonology, Department of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Pediatrics, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jiunn-Ren Wu
- Department of Pediatrics, E-Da Hospital/I-Shou University, No. 1, Yi-Da Road, Jiao-Su Village, Yan-Chao District, Kaohsiung, 82445, Taiwan.
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Zhang L, Zhou Y, Jiang S, Fan Y, Huang J, Xiao B, Rao H, Huang L. Effects of metformin therapy on HMGB1 levels in rheumatoid arthritis patients. Eur J Med Res 2023; 28:512. [PMID: 37964313 PMCID: PMC10648365 DOI: 10.1186/s40001-023-01476-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 10/25/2023] [Indexed: 11/16/2023] Open
Abstract
OBJECTIVE The traditional treatment of rheumatoid arthritis (RA) has some side effects. We aimed to explore the effect of metformin treatment on the expression of HMGB1, cytokines, T cell subtypes and the clinical outcomes in RA patients. METHODS The present prospective cohort study recruited 124 RA patients (metformin group) who were treated with metformin and conventional therapy (methotrexate, hydroxychloroquine sulfate and sulfasalazine) and 98 RA patients (conventional therapy group) who were only treated with conventional therapy. All subjects were admitted from December 2018 to December 2021 and continuous medication for 90 days. The serum high mobility group box 1 (HMGB1), tumor necrosis factor α (TNF-α), interleukin (IL)-6, IL-1β and C-reactive protein (CRP) levels were measured by enzyme-linked immunosorbent assay (ELISA). Flow cytometric were used to analyze the expression of CD4+ and CD8+. Demographic and clinical statistics including age, body mass index (BMI), sex, course of disease, erythrocyte sedimentation rate (ESR), rheumatoid factor (RF), visual analogue score (VAS)and disease activity score (DAS)-28 were collected. RESULTS The serum levels of HMGB1, CRP, IL-6, CD4+ expression and CD4+/CD8+ ratio were significantly increased in patients with DAS-28 score ≥ 2.6. The serum HMGB1 and cytokines levels of metformin group declined more quickly during the study time. Pearson's analysis supported that a positive correlation existed between the HMGB1 and IL-6, TNF-α, CRP, CD4+, CD4+/CD8+ ratio, and VAS scores. HMGB1 could be a potential diagnostic biomarker for RA patients in active phase. Serum HMGB1 (95% CI 1.133-1.397, P < 0.001) was a factor associated with active RA. CONCLUSION The serum HMGB1 levels were significantly increased in RA patients in active phase. The serum levels of HMGB1 and inflammatory factors and VAS scores were decreased gradually with metformin treatment. HMGB1 might act as a novel therapeutic target for RA.
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Affiliation(s)
- Lihua Zhang
- Department of Rheumatology and Immunology, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), No.89 Guhan Road, Furong District, Changsha, 410016, Hunan, People's Republic of China
| | - Yuqing Zhou
- The First-Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, People's Republic of China
| | - Shengzhi Jiang
- The First-Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, People's Republic of China
| | - Yubei Fan
- The First-Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, People's Republic of China
| | - Jierou Huang
- Department of Rheumatology and Immunology, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), No.89 Guhan Road, Furong District, Changsha, 410016, Hunan, People's Republic of China
| | - Bin Xiao
- Department of Rheumatology and Immunology, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), No.89 Guhan Road, Furong District, Changsha, 410016, Hunan, People's Republic of China
| | - Hui Rao
- Department of Rheumatology and Immunology, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), No.89 Guhan Road, Furong District, Changsha, 410016, Hunan, People's Republic of China.
| | - Lingyun Huang
- The First-Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, People's Republic of China.
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Wang C, Tang Y, Hou H, Su C, Gao Y, Yang X. CIRC_0026466 KNOCKDOWN PROTECTS HUMAN BRONCHIAL EPITHELIAL CELLS FROM CIGARETTE SMOKE EXTRACT-INDUCED INJURY BY PROMOTING THE MIR-153-3P/TRAF6/NF-ΚB PATHWAY. Shock 2023; 60:121-129. [PMID: 37179246 DOI: 10.1097/shk.0000000000002141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
ABSTRACT Background: Considerable data have shown that circular RNAs (circRNAs) mediate the pathogenesis of chronic obstructive pulmonary disease (COPD). The study aims to analyze the function and mechanism of circ_0026466 in COPD. Methods: Human bronchial epithelial cells (16HBE) were treated with cigarette smoke extract (CSE) to establish a COPD cell model. Quantitative real-time polymerase chain reaction and Western blot were used to detect the expression of circ_0026466, microRNA-153-3p (miR-153-3p), TNF receptor associated factor 6 (TRAF6), cell apoptosis-related proteins, and NF-κB pathway-related proteins. Cell viability, proliferation, apoptosis, and inflammation were investigated by cell counting kit-8, EdU assay, flow cytometry, and enzyme-linked immunosorbent assay, respectively. Oxidative stress was evaluated by lipid peroxidation malondialdehyde assay kit and superoxide dismutase activity assay kit. The interaction between miR-153-3p and circ_0026466 or TRAF6 was confirmed by dual-luciferase reporter assay and RNA pull-down assay. Results: Circ_0026466 and TRAF6 expression were significantly increased, but miR-153-3p was decreased in the blood samples of smokers with COPD and CSE-induced 16HBE cells when compared with controls. CSE treatment inhibited the viability and proliferation of 16HBE cells but induced cell apoptosis, inflammation, and oxidative stress, but these effects were attenuated after circ_0026466 knockdown. Circ_0026466 interacted with miR-153-3p and regulated CSE-caused 16HBE cell damage by targeting miR-153-3p. Additionally, TRAF6, a target gene of miR-153-3p, regulated CSE-induced 16HBE cell injury by combining with miR-153-3p. Importantly, circ_0026466 activated NF-κB pathway by targeting the miR-153-3p/TRAF6 axis. Conclusion: Circ_0026466 absence protected against CSE-triggered 16HBE cell injury by activating the miR-153-3p/TRAF6/NF-κB pathway, providing a potential therapeutic target for COPD.
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Affiliation(s)
- Cong Wang
- Nantong Hospital Affiliated to Nanjing University of Chinese Medicine, Pulmonary and Critical Care Medicine, Nantong, China
| | - Yanfen Tang
- Nantong Hospital Affiliated to Nanjing University of Chinese Medicine, Pulmonary and Critical Care Medicine, Nantong, China
| | - Haihui Hou
- Nantong Hospital Affiliated to Nanjing University of Chinese Medicine, Pulmonary and Critical Care Medicine, Nantong, China
| | - Chengcheng Su
- Nantong Hospital Affiliated to Nanjing University of Chinese Medicine, Pulmonary and Critical Care Medicine, Nantong, China
| | - Yemeng Gao
- Comprehensive Rehabilitation Department of Beidahuang Group General Hospital, Harbin, China
| | - Xu Yang
- Nantong Hospital of Traditional Chinese Medicine Surgery of Traditional Chinese Medicine, Nantong, China
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Wang D, Luo MY, Tian Y, Zhang J, Liang N, Li NP, Gong SX, Wang AP. Critical miRNAs in regulating pulmonary hypertension: A focus on Signaling pathways and therapeutic Targets. Anal Biochem 2023:115228. [PMID: 37393975 DOI: 10.1016/j.ab.2023.115228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/19/2023] [Accepted: 06/29/2023] [Indexed: 07/04/2023]
Abstract
Pulmonary hypertension (PH) is complex disease as a result of obstructive pulmonary arterial remodeling, which in turn results in elevated pulmonary arterial pressure (PAP) and subsequent right ventricular heart failure, eventually leading to premature death. However, there is still a lack of a diagnostic blood-based biomarker and therapeutic target for PH. Because of the difficulty of diagnosis, new and more easily accessible prevention and treatment strategy are being explored. New target and diagnosis biomarkers should also allow for early diagnosis. In biology, miRNAs are short endogenous RNA molecules that are not coding. It is known that miRNAs can regulate gene expression and affect a variety of biological processes. Besides, miRNAs have been proven to be a crucial factor in PH pathogenesis. miRNAs have various effects on pulmonary vascular remodeling and are expressed differentially in various pulmonary vascular cells. Nowadays, it has been shown to be critical in the functions of different miRNAs in the pathogenesis of PH. Therefore, clarifying the mechanism of miRNAs regulating pulmonary vascular remodeling is of great importance to explore new therapeutic targets of PH and improve the survival qualify and time of patients. This review is focused on the role, mechanism, and potential therapeutic targets of miRNAs in PH and puts forward possible clinical treatment strategies.
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Affiliation(s)
- Di Wang
- Department of Physiology, Institute of Neuroscience Research, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, PR China
| | - Meng-Yi Luo
- Department of Physiology, Institute of Neuroscience Research, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, PR China; Institute of Clinical Research, Department of Clinical Laboratory, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, 421002, Hunan, PR China
| | - Ying Tian
- Institute of Clinical Research, Department of Clinical Laboratory, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, 421002, Hunan, PR China
| | - Jing Zhang
- Department of Physiology, Institute of Neuroscience Research, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, PR China
| | - Na Liang
- Department of Anesthesiology, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, 421002, Hunan, PR China
| | - Nan-Ping Li
- Department of Physiology, Institute of Neuroscience Research, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, PR China; Department of Anesthesiology, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, 421002, Hunan, PR China
| | - Shao-Xin Gong
- Department of Pathology, First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, PR China.
| | - Ai-Ping Wang
- Department of Physiology, Institute of Neuroscience Research, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, PR China; Institute of Clinical Research, Department of Clinical Laboratory, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, 421002, Hunan, PR China.
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Pulmonary Vascular Remodeling in Pulmonary Hypertension. J Pers Med 2023; 13:jpm13020366. [PMID: 36836600 PMCID: PMC9967990 DOI: 10.3390/jpm13020366] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
Pulmonary vascular remodeling is the critical structural alteration and pathological feature in pulmonary hypertension (PH) and involves changes in the intima, media and adventitia. Pulmonary vascular remodeling consists of the proliferation and phenotypic transformation of pulmonary artery endothelial cells (PAECs) and pulmonary artery smooth muscle cells (PASMCs) of the middle membranous pulmonary artery, as well as complex interactions involving external layer pulmonary artery fibroblasts (PAFs) and extracellular matrix (ECM). Inflammatory mechanisms, apoptosis and other factors in the vascular wall are influenced by different mechanisms that likely act in concert to drive disease progression. This article reviews these pathological changes and highlights some pathogenetic mechanisms involved in the remodeling process.
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Transcriptional and Epigenetic Factors Associated with Early Thrombosis of Femoral Artery Involved in Arteriovenous Fistula. Proteomes 2022; 10:proteomes10020014. [PMID: 35645372 PMCID: PMC9149803 DOI: 10.3390/proteomes10020014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 02/04/2023] Open
Abstract
Arteriovenous fistulas (AVFs), created for hemodialysis in end-stage renal disease patients, mature through the outward remodeling of the outflow vein. However, early thrombosis and chronic inflammation are detrimental to the process of AVF maturation and precipitate AVF maturation failure. For the successful remodeling of the outflow vein, blood flow through the fistula is essential, but early arterial thrombosis attenuates this blood flow, and the vessels become thrombosed and stenosed, leading to AVF failure. The altered expression of various proteins involved in maintaining vessel patency or thrombosis is regulated by genes of which the expression is regulated by transcription factors and microRNAs. In this study, using thrombosed and stenosed arteries following AVF creation, we delineated transcription factors and microRNAs associated with differentially expressed genes in bulk RNA sequencing data using upstream and causal network analysis. We observed changes in many transcription factors and microRNAs that are involved in angiogenesis; vascular smooth muscle cell proliferation, migration, and phenotypic changes; endothelial cell function; hypoxia; oxidative stress; vessel remodeling; immune responses; and inflammation. These factors and microRNAs play a critical role in the underlying molecular mechanisms in AVF maturation. We also observed epigenetic factors involved in gene regulation associated with these molecular mechanisms. The results of this study indicate the importance of investigating the transcriptional and epigenetic regulation of AVF maturation and maturation failure and targeting factors precipitating early thrombosis and stenosis.
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Solinc J, Ribot J, Soubrier F, Pavoine C, Dierick F, Nadaud S. The Platelet-Derived Growth Factor Pathway in Pulmonary Arterial Hypertension: Still an Interesting Target? Life (Basel) 2022; 12:life12050658. [PMID: 35629326 PMCID: PMC9143262 DOI: 10.3390/life12050658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 12/03/2022] Open
Abstract
The lack of curative options for pulmonary arterial hypertension drives important research to understand the mechanisms underlying this devastating disease. Among the main identified pathways, the platelet-derived growth factor (PDGF) pathway was established to control vascular remodeling and anti-PDGF receptor (PDGFR) drugs were shown to reverse the disease in experimental models. Four different isoforms of PDGF are produced by various cell types in the lung. PDGFs control vascular cells migration, proliferation and survival through binding to their receptors PDGFRα and β. They elicit multiple intracellular signaling pathways which have been particularly studied in pulmonary smooth muscle cells. Activation of the PDGF pathway has been demonstrated both in patients and in pulmonary hypertension (PH) experimental models. Tyrosine kinase inhibitors (TKI) are numerous but without real specificity and Imatinib, one of the most specific, resulted in beneficial effects. However, adverse events and treatment discontinuation discouraged to pursue this therapy. Novel therapeutic strategies are currently under experimental evaluation. For TKI, they include intratracheal drug administration, low dosage or nanoparticles delivery. Specific anti-PDGF and anti-PDGFR molecules can also be designed such as new TKI, soluble receptors, aptamers or oligonucleotides.
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Affiliation(s)
- Julien Solinc
- INSERM, Institute of Cardiometabolism and Nutrition (ICAN), Sorbonne Université, UMR_S1166, F-75013 Paris, France; (J.S.); (J.R.); (F.S.); (C.P.)
| | - Jonathan Ribot
- INSERM, Institute of Cardiometabolism and Nutrition (ICAN), Sorbonne Université, UMR_S1166, F-75013 Paris, France; (J.S.); (J.R.); (F.S.); (C.P.)
| | - Florent Soubrier
- INSERM, Institute of Cardiometabolism and Nutrition (ICAN), Sorbonne Université, UMR_S1166, F-75013 Paris, France; (J.S.); (J.R.); (F.S.); (C.P.)
| | - Catherine Pavoine
- INSERM, Institute of Cardiometabolism and Nutrition (ICAN), Sorbonne Université, UMR_S1166, F-75013 Paris, France; (J.S.); (J.R.); (F.S.); (C.P.)
| | - France Dierick
- Lady Davis Institute for Medical Research, McGill University, Montreal, QC H3T 1E2, Canada;
| | - Sophie Nadaud
- INSERM, Institute of Cardiometabolism and Nutrition (ICAN), Sorbonne Université, UMR_S1166, F-75013 Paris, France; (J.S.); (J.R.); (F.S.); (C.P.)
- Correspondence: ; Tel.: +33-14077-9681
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Long Non-Coding RNAs Might Regulate Phenotypic Switch of Vascular Smooth Muscle Cells Acting as ceRNA: Implications for In-Stent Restenosis. Int J Mol Sci 2022; 23:ijms23063074. [PMID: 35328496 PMCID: PMC8952224 DOI: 10.3390/ijms23063074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/07/2022] [Accepted: 03/09/2022] [Indexed: 02/01/2023] Open
Abstract
Coronary in-stent restenosis is a late complication of angioplasty. It is a multifactorial process that involves vascular smooth muscle cells (VSMCs), endothelial cells, and inflammatory and genetic factors. In this study, the transcriptomic landscape of VSMCs’ phenotypic switch process was assessed under stimuli resembling stent injury. Co-cultured contractile VSMCs and endothelial cells were exposed to a bare metal stent and platelet-derived growth factor (PDGF-BB) 20 ng/mL. Migratory capacity (wound healing assay), proliferative capacity, and cell cycle analysis of the VSMCs were performed. RNAseq analysis of contractile vs. proliferative VSMCs was performed. Gene differential expression (DE), identification of new long non-coding RNA candidates (lncRNAs), gene ontology (GO), and pathway enrichment (KEGG) were analyzed. A competing endogenous RNA network was constructed, and significant lncRNA–miRNA–mRNA axes were selected. VSMCs exposed to “stent injury” conditions showed morphologic changes, with proliferative and migratory capacities progressing from G0-G1 cell cycle phase to S and G2-M. RNAseq analysis showed DE of 1099, 509 and 64 differentially expressed mRNAs, lncRNAs, and miRNAs, respectively. GO analysis of DE genes showed significant enrichment in collagen and extracellular matrix organization, regulation of smooth muscle cell proliferation, and collagen biosynthetic process. The main upregulated nodes in the lncRNA-mediated ceRNA network were PVT1 and HIF1-AS2, with downregulation of ACTA2-AS1 and MIR663AHG. The PVT1 ceRNA axis appears to be an attractive target for in-stent restenosis diagnosis and treatment.
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Zhang Y, Tang S, Yang W, Du F. let-7b-5p suppresses the proliferation and migration of pulmonary artery smooth muscle cells via down-regulating IGF1. Clinics (Sao Paulo) 2022; 77:100051. [PMID: 35636162 PMCID: PMC9156868 DOI: 10.1016/j.clinsp.2022.100051] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/12/2022] [Accepted: 05/06/2022] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES Some previous studies indicated that the excessive proliferation and migration of Pulmonary Artery Smooth Muscle Cells (PASMCs) could be observed in pulmonary artery intima after Pulmonary Embolism (PE) occurred. In addition, recent studies identified some miRNAs that are differentially expressed in the blood of PE patients, which might be used as a diagnostic biomarker for PE, including let-7a-5p, let-7b-5p, and miR-150-5p. Hence, the authors sought to explore the effects of let-7b-5p in PASMC proliferation and migration and the corresponding regulatory mechanism. METHODS Platelet-Derived Growth Factor (PDGF) was utilized to induce the hyper-proliferation model in PASMCs. The mRNA and protein expression levels were detected by RT-qPCR and western blot, respectively. The proliferation of PASMCs was evaluated by the detection of PCNA expression, as well as CCK-8 and Edu assays. Wound healing and Transwell assays were exploited to assess the migration ability of PASMCs. The targets of let-7b-5p were predicted based on two bioinformatics online tools. Dual-luciferase and Ago2 pull-down assays were applied to confirm the interaction between let-7b-5p and IGF1. RESULTS 40 ng/mL PDGF was selected as the optimal concentration to induce PASMCs. let-7b-5p mimics suppressed the proliferation and migration of PDGF-induced PASMCs, while let-7b-5p inhibitor led to the opposite result. In further mechanism exploration, IGF1 was predicted and confirmed as the direct target gene of let-7b-5p. The promotion role of IGF1 overexpression on the proliferation and migration of PDGF-induced PASMCs was dramatically countered by let-7b-5p mimics. CONCLUSION let-7b-5p prohibits the proliferation and migration of PDGF-induced PASMCs by modulating IGF1.
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Affiliation(s)
- Yadi Zhang
- Department of Respiratory Medicine, The Second People's Hospital of Hefei, Hefei Hospital Affiliated to Anhui Medical University, Hefei, Anhui 230011, China
| | - Sihui Tang
- Department of Respiratory Medicine, The Second People's Hospital of Hefei, Hefei Hospital Affiliated to Anhui Medical University, Hefei, Anhui 230011, China
| | - Wanchun Yang
- Department of Respiratory Medicine, The Second People's Hospital of Hefei, Hefei Hospital Affiliated to Anhui Medical University, Hefei, Anhui 230011, China
| | - Fangbing Du
- Department of Respiratory Medicine, The Second People's Hospital of Hefei, Hefei Hospital Affiliated to Anhui Medical University, Hefei, Anhui 230011, China.
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Yi L, Liu J, Deng M, Zuo H, Li M. Emodin inhibits viability, proliferation and promotes apoptosis of hypoxic human pulmonary artery smooth muscle cells via targeting miR-244-5p/DEGS1 axis. BMC Pulm Med 2021; 21:252. [PMID: 34332565 PMCID: PMC8325255 DOI: 10.1186/s12890-021-01616-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/21/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE This study aimed to determine the effects of emodin on the viability, proliferation and apoptosis of human pulmonary artery smooth muscle cells (PASMCs) under hypoxia and to explore the underling molecular mechanisms. METHODS PASMCs were cultured in a hypoxic environment (1% oxygen) and then treated with emodin. Cell viability, proliferation and apoptosis were evaluated using CCK-8 assay, EdU staining assay, western blot and Mito-tracker red CMXRos and Annexin V-FITC apoptosis detection assay. The microRNA (miRNA)/mRNA and protein expression levels were assessed by quantitative real-time PCR and western blotting, respectively. Based on transcriptomics and proteomics were used to identify potential signaling pathways. Luciferase reporter assay was utilized to examine the interaction between miR-244-5p and DEGS1. RESULTS Emodin at 40 and 160 µM concentration-dependently suppressed cell viability, proliferation and migration, but enhanced cell apoptosis of PASMCs under hypoxia. Transcriptomic and proteomic analysis revealed that emodin could attenuate the activity of PI3K/Akt signaling in PASMCs under hypoxia. In addition, delta 4-desaturase, sphingolipid 1 (DEGS1) was found to be a direct target of miR-244-5p. Emodin could significantly up-regulated miR-244-5p expression and down-regulated DEGS1 expression in PASMCs under hypoxia. Furthermore, emodin-mediated effects on cell viability, migration, apoptosis and PI3K/Akt signaling activity of PASMCs under hypoxia were significantly attenuated by miR-244-5p knockdown. CONCLUSIONS Our results indicated that emodin suppressed cell viability, proliferation and migration, promoted cell apoptosis of PASMCs under hypoxia via modulating miR-244-5p-mediated DEGS1/PI3K/Akt signaling pathway. MiR-244-5p/DEGS1 axis was initially investigated in this current study, which is expected to further the understanding of the etiology of pulmonary arterial hypertension.
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Affiliation(s)
- Li Yi
- Special Medical Service Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282 China
| | - JunFang Liu
- Pulmonary and Critical Care Medicine, Zhujiang Hospital of Southern Medical University, Guangzhou, 510282 China
| | - Ming Deng
- Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences, NO.12, Langshan Road, Nanshan District, Shenzhen, 518057 Guangdong China
| | - Huihua Zuo
- Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences, NO.12, Langshan Road, Nanshan District, Shenzhen, 518057 Guangdong China
| | - Mingyan Li
- Department of Cardiology, The Second Affiliated Hospital of Guangzhou Medical University, NO. 250 Changgangdong Road, Guangzhou, 510260 Guangdong China
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