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Josse M, Rigal E, Rosenblatt-Velin N, Collin B, Dogon G, Rochette L, Zeller M, Vergely C. Postnatally overfed mice display cardiac function alteration following myocardial infarction. Biochim Biophys Acta Mol Basis Dis 2024; 1871:167516. [PMID: 39304090 DOI: 10.1016/j.bbadis.2024.167516] [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: 02/12/2024] [Revised: 09/11/2024] [Accepted: 09/12/2024] [Indexed: 09/22/2024]
Abstract
BACKGROUND Cardiovascular (CV) pathologies remain a leading cause of death worldwide, often associated with common comorbidities such as overweight, obesity, type 2 diabetes or hypertension. An innovative mouse model of metabolic syndrome induced by postnatal overfeeding (PNOF) through litter size reduction after birth was developed experimentally. This study aimed to evaluate the impact of PNOF on cardiac remodelling and the development of heart failure following myocardial infarction. METHODS C57BL/6 male mice were raised in litter adjusted to 9 or 3 pups for normally-fed (NF) control and PNOF group respectively. After weaning, all mice had free access to standard diet and water. At 4 months, mice were subjected to myocardial infarction (MI). Echocardiographic follows-up were performed up to 6-months post-surgery and biomolecular analyses were carried-out after heart collection. FINDINGS At 4 months, PNOF mice exhibited a significant increase in body weight, along with a basal reduction in left ventricular ejection fraction (LVEF) and an increase in left ventricular end-systolic area (LVESA), compared to NF mice. Following MI, PNOF mice demonstrated a significant decrease in stroke volume and an increased heart rate compared to their respective initial values, as well as a notable reduction in cardiac output 4-months after MI. After 6-months, left ventricle and lung masses, fibrosis staining, and mRNA expression were all similar in the NF-MI and PNOF-MI groups. INTERPRETATION After MI, PNOF mice display signs of cardiac function worsening as evidenced by a decrease in cardiac output, which could indicate an early sign of heart failure decompensation.
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Affiliation(s)
- Marie Josse
- Research Team: Physiopathologie et Epidémiologie Cérébro-Cardiovasculaires (PEC2), Université de Bourgogne, Faculté des Sciences de Santé, 7 Bd Jeanne d'Arc, 21000 Dijon, France.
| | - Eve Rigal
- Research Team: Physiopathologie et Epidémiologie Cérébro-Cardiovasculaires (PEC2), Université de Bourgogne, Faculté des Sciences de Santé, 7 Bd Jeanne d'Arc, 21000 Dijon, France.
| | - Nathalie Rosenblatt-Velin
- Division of Angiology, Heart and Vessel Department, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Switzerland.
| | - Bertrand Collin
- Preclinical Imaging and Radiotherapy Platform, Centre Georges-François Leclerc and Radiopharmaceutiques, Imagerie, Théranostiques et Multimodalité (RITM) Team, Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB - UMR CNRS 6302), France.
| | - Geoffrey Dogon
- Research Team: Physiopathologie et Epidémiologie Cérébro-Cardiovasculaires (PEC2), Université de Bourgogne, Faculté des Sciences de Santé, 7 Bd Jeanne d'Arc, 21000 Dijon, France
| | - Luc Rochette
- Research Team: Physiopathologie et Epidémiologie Cérébro-Cardiovasculaires (PEC2), Université de Bourgogne, Faculté des Sciences de Santé, 7 Bd Jeanne d'Arc, 21000 Dijon, France.
| | - Marianne Zeller
- Research Team: Physiopathologie et Epidémiologie Cérébro-Cardiovasculaires (PEC2), Université de Bourgogne, Faculté des Sciences de Santé, 7 Bd Jeanne d'Arc, 21000 Dijon, France; Service de Cardiologie, CHU Dijon Bourgogne, France.
| | - Catherine Vergely
- Research Team: Physiopathologie et Epidémiologie Cérébro-Cardiovasculaires (PEC2), Université de Bourgogne, Faculté des Sciences de Santé, 7 Bd Jeanne d'Arc, 21000 Dijon, France.
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Kong X, Jin G. Comprehensive analysis of macrophage-associated inflammatory genes in AMI based on bulk combined with single-cell sequencing data. PeerJ 2024; 12:e17981. [PMID: 39308815 PMCID: PMC11416078 DOI: 10.7717/peerj.17981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 08/06/2024] [Indexed: 09/25/2024] Open
Abstract
Background Previous studies have highlighted the crucial role of macrophages in the post-acute myocardial infarction (AMI) inflammatory response. This study specifically focused on investigating macrophage-related targets involved in the inflammatory response after AMI. Methods Bioinformatics methods were applied for identifying differentially expressed genes (DEGs) in datasets GSE163465, GSE236374, and GSE183272 obtained from the Gene Expression Omnibus (GEO) database. Communication analysis was conducted to analyze macrophages in AMI. Subsequent analyses encompassed functional enrichment analysis of Co-DEGs using Gene Ontology (GO) and Kyoto Encyclopaedia of Genes and Genomes (KEGG). Gene set variation analysis (GSVA) and immune infiltration analysis were carried out for screening key genes. Validation of the bioinformatics analysis results involved original and GSE114695 datasets, supported by quantitative real time polymerase chain reaction (qRT-PCR). Animal experiments confirmed the upregulation of Saa3, Acp5, and Fcgr4 genes in AMI mouse myocardial tissues. Results A total of 80 and 1,907 DEGs were respectively identified by analyzing scRNA-seq and bulk RNA-seq data. The overlapping Co-DEGs were found to be closely associated with inflammation-associated pathways, specifically the PI3K-Akt-mTOR pathway. Screening based on GSVA scores and macrophage-associated scores highlighted four key genes (Saa3, Ms4a4c, Acp5, and Fcgr4). Immunoinfiltration analysis revealed their close association with macrophages. Dataset validation corroborated these findings. Experimental validation focused on Saa3, Ms4a4c, Acp5, and Fcgr4, demonstrating the upregulation of their expression in cardiac macrophages in the AMI group, consistent with previous reports. Conclusion This study provides new perspectives on AMI treatment. In addition, Saa3, Acp5, and Fcgr4 exhibit potential as biomarkers for improving cardiac repair and slowing down the development of heart failure after AMI.
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Affiliation(s)
- Xugang Kong
- Department of Cardiology, Xiasha Campus, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Guangjun Jin
- Medical Department, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
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Tang L, Qiu H, Xu B, Su Y, Nyarige V, Li P, Chen H, Killham B, Liao J, Adam H, Yang A, Yu A, Jang M, Rubart M, Xie J, Zhu W. Microparticle Mediated Delivery of Apelin Improves Heart Function in Post Myocardial Infarction Mice. Circ Res 2024; 135:777-798. [PMID: 39145385 PMCID: PMC11392624 DOI: 10.1161/circresaha.124.324608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 07/31/2024] [Accepted: 08/06/2024] [Indexed: 08/16/2024]
Abstract
BACKGROUND Apelin is an endogenous prepropeptide that regulates cardiac homeostasis and various physiological processes. Intravenous injection has been shown to improve cardiac contractility in patients with heart failure. However, its short half-life prevents studying its impact on left ventricular remodeling in the long term. Here, we aim to study whether microparticle-mediated slow release of apelin improves heart function and left ventricular remodeling in mice with myocardial infarction (MI). METHODS A cardiac patch was fabricated by embedding apelin-containing microparticles in a fibrin gel scaffold. MI was induced via permanent ligation of the left anterior descending coronary artery in adult C57BL/6J mice followed by epicardial patch placement immediately after (acute MI) or 28 days (chronic MI) post-MI. Four groups were included in this study, namely sham, MI, MI plus empty microparticle-embedded patch treatment, and MI plus apelin-containing microparticle-embedded patch treatment. Cardiac function was assessed by transthoracic echocardiography. Cardiomyocyte morphology, apoptosis, and cardiac fibrosis were evaluated by histology. Cardioprotective pathways were determined by RNA sequencing, quantitative polymerase chain reaction, and Western blot. RESULTS The level of endogenous apelin was largely reduced in the first 7 days after MI induction and it was normalized by day 28. Apelin-13 encapsulated in poly(lactic-co-glycolic acid) microparticles displayed a sustained release pattern for up to 28 days. Treatment with apelin-containing microparticle-embedded patch inhibited cardiac hypertrophy and reduced scar size in both acute and chronic MI models, which is associated with improved cardiac function. Data from cellular and molecular analyses showed that apelin inhibits the activation and proliferation of cardiac fibroblasts by preventing transforming growth factor-β-mediated activation of Smad2/3 (supporessor of mothers against decapentaplegic 2/3) and downstream profibrotic gene expression. CONCLUSIONS Poly(lactic-co-glycolic acid) microparticles prolonged the apelin release time in the mouse hearts. Epicardial delivery of the apelin-containing microparticle-embedded patch protects mice from both acute and chronic MI-induced cardiac dysfunction, inhibits cardiac fibrosis, and improves left ventricular remodeling.
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Affiliation(s)
- Ling Tang
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Huiliang Qiu
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Bing Xu
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Yajuan Su
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha (Y.S., J.X.)
| | - Verah Nyarige
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Pengsheng Li
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Houjia Chen
- Department of Bioengineering, University of Texas at Arlington (H.C., B.K., J.L.)
| | - Brady Killham
- Department of Bioengineering, University of Texas at Arlington (H.C., B.K., J.L.)
| | - Jun Liao
- Department of Bioengineering, University of Texas at Arlington (H.C., B.K., J.L.)
| | - Henderson Adam
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Aaron Yang
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Alexander Yu
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Michelle Jang
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
| | - Michael Rubart
- Department of Pediatrics, Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis (M.R.)
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha (Y.S., J.X.)
| | - Wuqiang Zhu
- Department of Cardiovascular Diseases, Physiology and Biomedical Engineering, Center for Regenerative Medicine, Mayo Clinic Arizona, Scottsdale (L.T., H.Q., B.X., V.N., P.L., H.A., A. Yang, A. Yu, M.J., W.Z.)
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Wang S, Wang H, Li L, Niu P, Yin Z, Huo Y. Long-term inhaling ultrafine zinc particles increases cardiac wall stresses elevated by myocardial infarction. Biomed Eng Online 2024; 23:78. [PMID: 39103913 DOI: 10.1186/s12938-024-01275-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 07/29/2024] [Indexed: 08/07/2024] Open
Abstract
The analysis of cardiac wall mechanics is of importance for understanding coronary heart diseases (CHD). The inhalation of ultrafine particles could deteriorate CHD. The aim of the study is to investigate the effects of cardiac wall mechanics on rats of myocardial infarction (MI) after long-term inhalation of ultrafine Zn particles. Cardiac wall stresses and strains were computed, based on echocardiographic and hemodynamic measurements. It was found that MI resulted in the significantly elevated stresses and the reduced strains. The short-term inhalation of ultrafine Zn particles decreased stresses and increased strains in MI rats, but the long-term inhalation had the opposite effects. Hence, the short-term inhalation of ultrafine Zn particles could alleviate the MI-induced LV dysfunction while the long-term inhalation impaired it.
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Affiliation(s)
- Songyu Wang
- School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao, China
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Haifang Wang
- School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao, China
| | - Li Li
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- PKU-HKUST Shenzhen-Hong Kong Institution, Shenzhen, Guangdong, China
| | - Pei Niu
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- PKU-HKUST Shenzhen-Hong Kong Institution, Shenzhen, Guangdong, China
| | - Zhongjie Yin
- Department of Chemical Engineering, Imperial College London, London, UK
| | - Yunlong Huo
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
- PKU-HKUST Shenzhen-Hong Kong Institution, Shenzhen, Guangdong, China.
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5
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Bannerman D, Gil de Gomez SP, Wu Q, Fernandes I, Zhao Y, Wagner KT, Okhovatian S, Landau S, Raftian N, Bodenstein DF, Wang Y, Nash TR, Vunjak-Novakovic G, Keller G, Epelman S, Radisic M. Heart-on-a-Chip Model of Epicardial-Myocardial Interaction in Ischemia Reperfusion Injury. Adv Healthc Mater 2024; 13:e2302642. [PMID: 38683053 PMCID: PMC11338737 DOI: 10.1002/adhm.202302642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 03/22/2024] [Indexed: 05/01/2024]
Abstract
Epicardial cells (EPIs) form the outer layer of the heart and play an important role in development and disease. Current heart-on-a-chip platforms still do not fully mimic the native cardiac environment due to the absence of relevant cell types, such as EPIs. Here, using the Biowire II platform, engineered cardiac tissues with an epicardial outer layer and inner myocardial structure are constructed, and an image analysis approach is developed to track the EPI cell migration in a beating myocardial environment. Functional properties of EPI cardiac tissues improve over two weeks in culture. In conditions mimicking ischemia reperfusion injury (IRI), the EPI cardiac tissues experience less cell death and a lower impact on functional properties. EPI cell coverage is significantly reduced and more diffuse under normoxic conditions compared to the post-IRI conditions. Upon IRI, migration of EPI cells into the cardiac tissue interior is observed, with contributions to alpha smooth muscle actin positive cell population. Altogether, a novel heart-on-a-chip model is designed to incorporate EPIs through a formation process that mimics cardiac development, and this work demonstrates that EPI cardiac tissues respond to injury differently than epicardium-free controls, highlighting the importance of including EPIs in heart-on-a-chip constructs that aim to accurately mimic the cardiac environment.
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Affiliation(s)
- Dawn Bannerman
- Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - Simon Pascual Gil de Gomez
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - Qinghua Wu
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - Ian Fernandes
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
- McEwen Stem Cell Institute, University Health Network, Toronto, ON, Canada
| | - Yimu Zhao
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - Karl T. Wagner
- Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - Sargol Okhovatian
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - Shira Landau
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - Naimeh Raftian
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - David F. Bodenstein
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
- Department of Toxicology, University of Toronto, Toronto, ON, Canada
| | - Ying Wang
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
| | - Trevor R. Nash
- Department of Medicine, Columbia University, New York, NY, USA
- Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Gordana Vunjak-Novakovic
- Department of Medicine, Columbia University, New York, NY, USA
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Gordon Keller
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
- McEwen Stem Cell Institute, University Health Network, Toronto, ON, Canada
| | - Slava Epelman
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
- Division of Cardiology, University Health Network, Peter Munk Cardiac Centre
| | - Milica Radisic
- Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Health Research Institute, University Health Network, Toronto, ON, Canada
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Palfrey HA, Kumar A, Pathak R, Stone KP, Gettys TW, Murthy SN. Adverse cardiac events of hypercholesterolemia are enhanced by sitagliptin in sprague dawley rats. Nutr Metab (Lond) 2024; 21:54. [PMID: 39080769 PMCID: PMC11290187 DOI: 10.1186/s12986-024-00817-9] [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: 03/11/2024] [Accepted: 06/18/2024] [Indexed: 08/02/2024] Open
Abstract
BACKGROUND Cardiovascular disease (CVD) affects millions worldwide and is the leading cause of death among non-communicable diseases. Western diets typically comprise of meat and dairy products, both of which are rich in cholesterol (Cho) and methionine (Met), two well-known compounds with atherogenic capabilities. Despite their individual effects, literature on a dietary combination of the two in the context of CVD are limited. Therefore, studies on the combined effects of Cho and Met were carried out using male Sprague Dawley rats. An additional interest was to investigate the cardioprotective potential of sitagliptin, an anti-type 2 diabetic drug. We hypothesized that feeding a dietary combination of Cho and Met would result in adverse cardiac effects and would be attenuated upon administration of sitagliptin. METHODS Adult male Sprague-Dawley rats were fed either a control (Con), high Met (1.5%), high Cho (2.0%), or high Met (1.5%) + high Cho (2.0%) diet for 35 days. They were orally gavaged with an aqueous preparation of sitagliptin (100 mg/kg/d) or vehicle (water) from day 10 through 35. On day 36, rats were euthanized, and tissues were collected for analysis. RESULTS Histopathological evaluation revealed a reduction in myocardial striations and increased collagen deposition in hypercholesterolemia (HChol), responses that became exacerbated upon sitagliptin administration. Cardiac pro-inflammatory and pro-fibrotic responses were adversely impacted in similar fashion. The addition of Met to Cho (MC) attenuated all adverse structural and biochemical responses, with or without sitagliptin. CONCLUSIONS Adverse cardiac outcomes in HChol were enhanced by the administration of sitagliptin, and such effects were alleviated by Met. Our findings could be significant for understanding or revisiting the risk-benefit evaluation of sitagliptin in type 2 diabetics, and especially those who are known to consume atherogenic diets.
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Affiliation(s)
- Henry A Palfrey
- Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Avinash Kumar
- Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Rashmi Pathak
- Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Kirsten P Stone
- Nutrient Sensing and Adipocyte Signaling, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Thomas W Gettys
- Nutrient Sensing and Adipocyte Signaling, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Subramanyam N Murthy
- Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA.
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Khalil NN, Rexius-Hall ML, Gupta D, McCarthy L, Verma R, Kellogg AC, Takamoto K, Xu M, Nejatpoor T, Parker SJ, McCain ML. Hypoxic-Normoxic Crosstalk Activates Pro-Inflammatory Signaling in Human Cardiac Fibroblasts and Myocytes in a Post-Infarct Myocardium on a Chip. Adv Healthc Mater 2024:e2401478. [PMID: 39001626 DOI: 10.1002/adhm.202401478] [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: 04/22/2024] [Revised: 07/01/2024] [Indexed: 08/06/2024]
Abstract
Myocardial infarctions locally deprive myocardium of oxygenated blood and cause immediate cardiac myocyte necrosis. Irreparable myocardium is then replaced with a scar through a dynamic repair process that is an interplay between hypoxic cells of the infarct zone and normoxic cells of adjacent healthy myocardium. In many cases, unresolved inflammation or fibrosis occurs for reasons that are incompletely understood, increasing the risk of heart failure. Crosstalk between hypoxic and normoxic cardiac cells is hypothesized to regulate mechanisms of repair after a myocardial infarction. To test this hypothesis, microfluidic devices are fabricated on 3D printed templates for co-culturing hypoxic and normoxic cardiac cells. This system demonstrates that hypoxia drives human cardiac fibroblasts toward glycolysis and a pro-fibrotic phenotype, similar to the anti-inflammatory phase of wound healing. Co-culture with normoxic fibroblasts uniquely upregulates pro-inflammatory signaling in hypoxic fibroblasts, including increased secretion of tumor necrosis factor alpha (TNF-α). In co-culture with hypoxic fibroblasts, normoxic human induced pluripotent stem cell (hiPSC)-derived cardiac myocytes also increase pro-inflammatory signaling, including upregulation of interleukin 6 (IL-6) family signaling pathway and increased expression of IL-6 receptor. Together, these data suggest that crosstalk between hypoxic fibroblasts and normoxic cardiac cells uniquely activates phenotypes that resemble the initial pro-inflammatory phase of post-infarct wound healing.
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Affiliation(s)
- Natalie N Khalil
- Alfred E. Mann Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Megan L Rexius-Hall
- Alfred E. Mann Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Divya Gupta
- Department of Biomedical Sciences and Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Liam McCarthy
- Department of Biomedical Sciences and Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Riya Verma
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA
| | - Austin C Kellogg
- Alfred E. Mann Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Kaelyn Takamoto
- Alfred E. Mann Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Maryann Xu
- Alfred E. Mann Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Tiana Nejatpoor
- Alfred E. Mann Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Sarah J Parker
- Department of Biomedical Sciences and Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Megan L McCain
- Alfred E. Mann Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90089, USA
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA
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8
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Hu G, Chen J, Chen M, Yang K, Wang Y, Ma Z, Bao H, Ding X. Silencing DOCK2 Attenuates Cardiac Fibrosis Following Myocardial Infarction in Mice Via Targeting PI3K/Akt and Wnt/β-Catenin Pathways. J Cardiovasc Transl Res 2024:10.1007/s12265-024-10533-7. [PMID: 38990461 DOI: 10.1007/s12265-024-10533-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 06/05/2024] [Indexed: 07/12/2024]
Abstract
Cardiac fibrosis following myocardial infarction (MI) seriously affects the prognosis and survival rate of patients. This study aimed to determine the effect and regulation mechanism of the dedicator of cytokinesis 2 (DOCK2) during this process. Experiments were carried out in mice in vivo, and in Ang II treated cardiac fibroblasts (CFs) in vitro. DOCK2 was increased in mouse myocardial tissues after MI and Ang II-treated CFs. In MI mice, DOCK2 silencing improved cardiac function, and ameliorated cardiac fibrosis. DOCK2 knockdown suppressed the activation of CFs and decreased the expression of α-SMA, collagen I, and collagen III. Suppression of DOCK2 mitigated Ang II induced migration of CFs. DOCK2 inhibition reduced the activity of the PI3K/Akt and Wnt/β-catenin pathways, while this change could be reversed by the pathway activators, SC79 and SKL2001. In summary, DOCK2 suppression improves cardiac dysfunction and attenuates cardiac fibrosis after MI via attenuating PI3K/Akt and Wnt/β-catenin pathways.
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Affiliation(s)
- Guangquan Hu
- Department of Cardiology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, P. R. China
| | - Jin Chen
- Department of Medical Technology, Anhui Medical College, Hefei, Anhui, P. R. China
| | - Min Chen
- Department of Cardiology, The Second People's Hospital of Hefei, Hefei Hospital Affiliated to Anhui Medical University, Hefei, Anhui, P. R. China
| | - Kai Yang
- Department of Medical Technology, Anhui Medical College, Hefei, Anhui, P. R. China
| | - Yuchen Wang
- Department of Neurology, Anhui Children's Hospital, Hefei, Anhui, P. R. China
| | - Ziyang Ma
- Department of Medical Technology, Anhui Medical College, Hefei, Anhui, P. R. China
| | - Huangxin Bao
- Department of Medical Technology, Anhui Medical College, Hefei, Anhui, P. R. China
| | - Xiaojie Ding
- Department of Endocrinology, Anhui No.2 Provincial People's Hospital, Hefei, Anhui, P. R. China.
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9
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Lin Z, Lin D, Lin D. The Mechanisms of Adipose Stem Cell-Derived Exosomes Promote Wound Healing and Regeneration. Aesthetic Plast Surg 2024; 48:2730-2737. [PMID: 38438760 DOI: 10.1007/s00266-024-03871-z] [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: 08/11/2023] [Accepted: 01/25/2024] [Indexed: 03/06/2024]
Abstract
Chronic wound healing is a class of diseases influenced by multiple complex factors, causing severe psychological and physiological impact on patients. It is an intractable clinical challenge and its possible mechanisms are not yet clear. It has been proven that adipose stem cell-derived exosomes (ADSC-Exos) can promote wound healing and inhibit scar formation by regulating inflammation, promoting cell proliferation, migration, and angiogenesis, regulating matrix remodeling, which provides a new approach for wound healing through biological treatment. This review focuses on the mechanism, treatment, and administration methods of ADSC-Exos in wound healing, providing a comprehensive understanding the mechanisms of ADSC-Exos on wound healing. LEVEL OF EVIDENCE I: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Zhengjie Lin
- Department of Metabolism and Endocrinology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Danyi Lin
- Department of Pathology, Guangdong Provincial People's Hospital, Southern Medical University, Guangzhou, China.
| | - Dane Lin
- Neonatal Intensive Care Unit, Department of Pediatrics, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, China.
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10
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Ramos-Regalado L, Alcover S, Badimon L, Vilahur G. The Influence of Metabolic Risk Factors on the Inflammatory Response Triggered by Myocardial Infarction: Bridging Pathophysiology to Treatment. Cells 2024; 13:1125. [PMID: 38994977 PMCID: PMC11240659 DOI: 10.3390/cells13131125] [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: 05/13/2024] [Revised: 06/19/2024] [Accepted: 06/27/2024] [Indexed: 07/13/2024] Open
Abstract
Myocardial infarction (MI) sets off a complex inflammatory cascade that is crucial for effective cardiac healing and scar formation. Yet, if this response becomes excessive or uncontrolled, it can lead to cardiovascular complications. This review aims to provide a comprehensive overview of the tightly regulated local inflammatory response triggered in the early post-MI phase involving cardiomyocytes, (myo)fibroblasts, endothelial cells, and infiltrating immune cells. Next, we explore how the bone marrow and extramedullary hematopoiesis (such as in the spleen) contribute to sustaining immune cell supply at a cardiac level. Lastly, we discuss recent findings on how metabolic cardiovascular risk factors, including hypercholesterolemia, hypertriglyceridemia, diabetes, and hypertension, disrupt this immunological response and explore the potential modulatory effects of lifestyle habits and pharmacological interventions. Understanding how different metabolic risk factors influence the inflammatory response triggered by MI and unraveling the underlying molecular and cellular mechanisms may pave the way for developing personalized therapeutic approaches based on the patient's metabolic profile. Similarly, delving deeper into the impact of lifestyle modifications on the inflammatory response post-MI is crucial. These insights may enable the adoption of more effective strategies to manage post-MI inflammation and improve cardiovascular health outcomes in a holistic manner.
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Affiliation(s)
- Lisaidy Ramos-Regalado
- Research Institute, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain (S.A.)
- Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Sebastià Alcover
- Research Institute, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain (S.A.)
- Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Lina Badimon
- Research Institute, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain (S.A.)
- Ciber CV, Institute Carlos III, 28029 Madrid, Spain
- Cardiovascular Research Chair, Universitat Autònoma de Barcelona (UAB), 08193 Barcelona, Spain
| | - Gemma Vilahur
- Research Institute, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain (S.A.)
- Ciber CV, Institute Carlos III, 28029 Madrid, Spain
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11
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Hilgendorf I, Frantz S, Frangogiannis NG. Repair of the Infarcted Heart: Cellular Effectors, Molecular Mechanisms and Therapeutic Opportunities. Circ Res 2024; 134:1718-1751. [PMID: 38843294 PMCID: PMC11164543 DOI: 10.1161/circresaha.124.323658] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Accepted: 05/08/2024] [Indexed: 06/12/2024]
Abstract
The adult mammalian heart has limited endogenous regenerative capacity and heals through the activation of inflammatory and fibrogenic cascades that ultimately result in the formation of a scar. After infarction, massive cardiomyocyte death releases a broad range of damage-associated molecular patterns that initiate both myocardial and systemic inflammatory responses. TLRs (toll-like receptors) and NLRs (NOD-like receptors) recognize damage-associated molecular patterns (DAMPs) and transduce downstream proinflammatory signals, leading to upregulation of cytokines (such as interleukin-1, TNF-α [tumor necrosis factor-α], and interleukin-6) and chemokines (such as CCL2 [CC chemokine ligand 2]) and recruitment of neutrophils, monocytes, and lymphocytes. Expansion and diversification of cardiac macrophages in the infarcted heart play a major role in the clearance of the infarct from dead cells and the subsequent stimulation of reparative pathways. Efferocytosis triggers the induction and release of anti-inflammatory mediators that restrain the inflammatory reaction and set the stage for the activation of reparative fibroblasts and vascular cells. Growth factor-mediated pathways, neurohumoral cascades, and matricellular proteins deposited in the provisional matrix stimulate fibroblast activation and proliferation and myofibroblast conversion. Deposition of a well-organized collagen-based extracellular matrix network protects the heart from catastrophic rupture and attenuates ventricular dilation. Scar maturation requires stimulation of endogenous signals that inhibit fibroblast activity and prevent excessive fibrosis. Moreover, in the mature scar, infarct neovessels acquire a mural cell coat that contributes to the stabilization of the microvascular network. Excessive, prolonged, or dysregulated inflammatory or fibrogenic cascades accentuate adverse remodeling and dysfunction. Moreover, inflammatory leukocytes and fibroblasts can contribute to arrhythmogenesis. Inflammatory and fibrogenic pathways may be promising therapeutic targets to attenuate heart failure progression and inhibit arrhythmia generation in patients surviving myocardial infarction.
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Affiliation(s)
- Ingo Hilgendorf
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen and Faculty of Medicine at the University of Freiburg, Freiburg, Germany
| | - Stefan Frantz
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Nikolaos G Frangogiannis
- The Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx NY
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12
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Ganji-Arjenaki M, Kamali Z, Sardari S, de Borst M, Snieder H, Vaez A. Prioritization of Kidney Cell Types Highlights Myofibroblast Cells in Regulating Human Blood Pressure. Kidney Int Rep 2024; 9:1849-1859. [PMID: 38899223 PMCID: PMC11184402 DOI: 10.1016/j.ekir.2024.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 02/20/2024] [Accepted: 03/04/2024] [Indexed: 06/21/2024] Open
Abstract
Introduction Blood pressure (BP) is a highly heritable trait with over 2000 underlying genomic loci identified to date. Although the kidney plays a key role, little is known about specific cell types involved in the genetic regulation of BP. Methods Here, we applied stratified linkage disequilibrium score (LDSC) regression to connect BP genome-wide association studies (GWAS) results to specific cell types of the mature human kidney. We used the largest single-stage BP genome-wide analysis to date, including up to 1,028,980 adults of European ancestry, and single-cell transcriptomic data from 14 mature human kidneys, with mean age of 41 years. Results Our analyses prioritized myofibroblasts and endothelial cells, among the total of 33 annotated cell type, as specifically involved in BP regulation (P < 0.05/33, i.e., 0.001515). Enrichment of heritability for systolic BP (SBP) was observed in myofibroblast cells in mature human kidney cortex, and enrichment of heritability for diastolic BP (DBP) was observed in descending vasa recta and peritubular capillary endothelial cells as well as stromal myofibroblast cells. The new finding of myofibroblast, the significant cell type for both BP traits, was consistent in 8 replication efforts using 7 sets of independent data, including in human fetal kidney, in East-Asian (EAS) ancestry, using mouse single-cell RNA sequencing (scRNA-seq) data, and when using another prioritization method. Conclusion Our findings provide a solid basis for follow-up studies to further identify genes and mechanisms in myofibroblast cells that underlie the regulation of BP.
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Affiliation(s)
- Mahboube Ganji-Arjenaki
- Drug Design and Bioinformatics Unit, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
- Department of Molecular Medicine, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Zoha Kamali
- Department of Epidemiology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
- Department of Bioinformatics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Soroush Sardari
- Drug Design and Bioinformatics Unit, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Martin de Borst
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Harold Snieder
- Department of Epidemiology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Ahmad Vaez
- Department of Epidemiology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
- Department of Bioinformatics, Isfahan University of Medical Sciences, Isfahan, Iran
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13
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Bahramifar A, Jafari RM, Sheibani M, Manavi MA, Rashidian A, Tavangar SM, Akbariani M, Mohammadi Hamaneh A, Goudarzi R, Shadboorestan A, Dehpour AR. Sumatriptan mitigates bleomycin-induced lung fibrosis in male rats: Involvement of inflammation, oxidative stress and α-SMA. Tissue Cell 2024; 88:102349. [PMID: 38492426 DOI: 10.1016/j.tice.2024.102349] [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: 11/22/2023] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 03/18/2024]
Abstract
INTRODUCTION Idiopathic pulmonary fibrosis (IPF) is a fibrotic lung condition that produces symptoms including coughing which may cause by excessive accumulation of scar tissue inflammatory and oxidative stress exacerbation. Sumatriptan, utilized for migraine treatment as a selective 5-HT1B/1D receptor agonist, has demonstrated significant anti-inflammatory and antioxidant properties in multiple preclinical investigations. Operating primarily on serotonin receptors, sumatriptan leverages the diverse physiological functions of serotonin, playing a pivotal role in regulating both inflammation and oxidative stress which is particularly relevant in the context of IPF. MATERIALS & METHODS Thirty-five male Wistar rats were divided to five group, including: Sham (without IPF induction), control (BLM 5 mg/kg, intraperitoneally), and three fibrosis group with sumatriptan (0.5, 1, and 3 mg/kg, i.p. for 2 weeks) administration. IPF was induced by injection of BLM (single dose, 5 mg/kg intratracheally). Lung tissues were separated for measurement of myeloperoxidase (MPO) as an oxidative stress hallmark, and tumor necrosis factor-α (TNF-α), interleukin-1β (IL-β), and transforming growth factor-β (TGF-β) as inflammatory markers as well as alpha smooth muscle actin (α-SMA). Also, for histological investigations, tissue damages were assessed by Hematoxylin-eosin (H&E) and Masson's trichrome staining method. RESULTS BLM-induced fibrosis could increase α-SMA, MPO, TNF-α, IL-1β, and TGF-β, while treatment with sumatriptan has reversed the α-SMA, MPO, and IL-1β levels. Moreover, the results of H&E and Masson's trichrome staining indicated that sumatriptan (1 and 3 mg/kg) reduced tissue damages, alveolar wall thickness, collagen accumulation, and pulmonary fibrosis induced by BLM. CONCLUSION According to the data achieved from this study, Sumatriptan appears to have therapeutic benefits in IPF, possibly via reducing α-SMA as well as inflammation and the toxicity caused by oxidative stress.
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Affiliation(s)
- Ayda Bahramifar
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Razieh Mohammad Jafari
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mohammad Sheibani
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran; Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Amin Manavi
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Rashidian
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Division of Clinical Pharmacology, School of Medicine, Indiana University, Indianapolis, USA
| | - Seyed Mohammad Tavangar
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Pathology, Dr. Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Akbariani
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Amirabbas Mohammadi Hamaneh
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramin Goudarzi
- Division of Research and Development, Pharmin USA, LLC, San Jose, CA, United States
| | - Amir Shadboorestan
- Department of Toxicology, Faculty of Medicine Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ahmad Reza Dehpour
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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14
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Salminen A, Kaarniranta K, Kauppinen A. Tissue fibroblasts are versatile immune regulators: An evaluation of their impact on the aging process. Ageing Res Rev 2024; 97:102296. [PMID: 38588867 DOI: 10.1016/j.arr.2024.102296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/26/2024] [Accepted: 04/03/2024] [Indexed: 04/10/2024]
Abstract
Fibroblasts are abundant stromal cells which not only control the integrity of extracellular matrix (ECM) but also act as immune regulators. It is known that the structural cells within tissues can establish an organ-specific immunity expressing many immune-related genes and closely interact with immune cells. In fact, fibroblasts can modify their immune properties to display both pro-inflammatory and immunosuppressive activities in a context-dependent manner. After acute insults, fibroblasts promote tissue inflammation although they concurrently recruit immunosuppressive cells to enhance the resolution of inflammation. In chronic pathological states, tissue fibroblasts, especially senescent fibroblasts, can display many pro-inflammatory and immunosuppressive properties and stimulate the activities of different immunosuppressive cells. In return, immunosuppressive cells, such as M2 macrophages and myeloid-derived suppressor cells (MDSC), evoke an excessive conversion of fibroblasts into myofibroblasts, thus aggravating the severity of tissue fibrosis. Single-cell transcriptome studies on fibroblasts isolated from aged tissues have confirmed that tissue fibroblasts express many genes coding for cytokines, chemokines, and complement factors, whereas they lose some fibrogenic properties. The versatile immune properties of fibroblasts and their close cooperation with immune cells indicate that tissue fibroblasts have a crucial role in the aging process and age-related diseases.
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Affiliation(s)
- Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, Kuopio FI-70211, Finland.
| | - Kai Kaarniranta
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, Kuopio FI-70211, Finland; Department of Ophthalmology, Kuopio University Hospital, P.O. Box 100, KYS FI-70029, Finland
| | - Anu Kauppinen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, Kuopio FI-70211, Finland
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15
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Chang CC, Chen CH, Hsu SY, Leu S. Cardiomyocyte-specific overexpression of GPR22 ameliorates cardiac injury in mice with acute myocardial infarction. BMC Cardiovasc Disord 2024; 24:287. [PMID: 38816768 PMCID: PMC11138089 DOI: 10.1186/s12872-024-03953-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 05/22/2024] [Indexed: 06/01/2024] Open
Abstract
BACKGROUND The activation of G protein-coupled receptors (GPCR) signaling by external stimuli has been implicated in inducing cardiac stress and stress responses. GPR22 is an orphan GPCR expressed in brains and hearts, while its expression level is associated with cardiovascular damage in diabetes. Previous studies have suggested a protective role of GPR22 in mechanical cardiac stress, as loss of its expression increases susceptibility to heart failure post-ventricular pressure overload. However, the involvement and underlying signaling of GPR22 in cardiac stress response to ischemic stress remains unexplored. METHODS In this study, we used cultured cells and a transgenic mouse model with cardiomyocyte-specific GPR22 overexpression to investigate the impact of ischemic stress on GPR22 expression and to elucidate its role in myocardial ischemic injury. Acute myocardial infarction (AMI) was induced by left coronary artery ligation in eight-week-old male GPR22 transgenic mice, followed by histopathological and biochemical examination four weeks post-AMI induction. RESULTS GPR22 expression in H9C2 and RL-14 cells, two cardiomyocyte cell lines, was decreased by cobalt chloride (CoCl2) treatment. Similarly, reduced expression of myocardial GPR22 was observed in mice with AMI. Histopathological examinations revealed a protective effect of GPR22 overexpression in attenuating myocardial infarction in mice with AMI. Furthermore, myocardial levels of Bcl-2 and activation of PI3K-Akt signaling were downregulated by ischemic stress and upregulated by GPR22 overexpression. Conversely, the expression levels of caspase-3 and phosphorylated ERK1/2 in the infarcted myocardium were downregulated with GPR22 overexpression. CONCLUSION Myocardial ischemic stress downregulates cardiac expression of GPR22, whereas overexpression of GPR22 in cardiomyocytes upregulates Akt signaling, downregulates ERK activation, and mitigates ischemia-induced myocardial injury.
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Affiliation(s)
- Chin-Chuan Chang
- Department of Nuclear Medicine, Kaohsiung Medical University Hospital, Kaohsiung, 80756, Taiwan
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80756, Taiwan
- Neuroscience Research Center, Kaohsiung Medical University, Kaohsiung, 80756, Taiwan
| | - Chih-Hung Chen
- Division of Hepato-Gastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Shu-Yuan Hsu
- Department of Anatomy, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan
| | - Steve Leu
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan.
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, 80756, Taiwan.
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16
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Aguado-Alvaro LP, Garitano N, Pelacho B. Fibroblast Diversity and Epigenetic Regulation in Cardiac Fibrosis. Int J Mol Sci 2024; 25:6004. [PMID: 38892192 PMCID: PMC11172550 DOI: 10.3390/ijms25116004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 05/28/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
Cardiac fibrosis, a process characterized by excessive extracellular matrix (ECM) deposition, is a common pathological consequence of many cardiovascular diseases (CVDs) normally resulting in organ failure and death. Cardiac fibroblasts (CFs) play an essential role in deleterious cardiac remodeling and dysfunction. In response to injury, quiescent CFs become activated and adopt a collagen-secreting phenotype highly contributing to cardiac fibrosis. In recent years, studies have been focused on the exploration of molecular and cellular mechanisms implicated in the activation process of CFs, which allow the development of novel therapeutic approaches for the treatment of cardiac fibrosis. Transcriptomic analyses using single-cell RNA sequencing (RNA-seq) have helped to elucidate the high cellular diversity and complex intercellular communication networks that CFs establish in the mammalian heart. Furthermore, a significant body of work supports the critical role of epigenetic regulation on the expression of genes involved in the pathogenesis of cardiac fibrosis. The study of epigenetic mechanisms, including DNA methylation, histone modification, and chromatin remodeling, has provided more insights into CF activation and fibrotic processes. Targeting epigenetic regulators, especially DNA methyltransferases (DNMT), histone acetylases (HAT), or histone deacetylases (HDAC), has emerged as a promising approach for the development of novel anti-fibrotic therapies. This review focuses on recent transcriptomic advances regarding CF diversity and molecular and epigenetic mechanisms that modulate the activation process of CFs and their possible clinical applications for the treatment of cardiac fibrosis.
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Affiliation(s)
- Laura Pilar Aguado-Alvaro
- Department of Biochemistry and Genetics, University of Navarra, 31008 Pamplona, Spain; (L.P.A.-A.); (N.G.)
- Program of Cardiovascular Disease, Center for Applied Medical Research (CIMA), University of Navarra, 31008 Pamplona, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008 Pamplona, Spain
| | - Nerea Garitano
- Department of Biochemistry and Genetics, University of Navarra, 31008 Pamplona, Spain; (L.P.A.-A.); (N.G.)
- Program of Cardiovascular Disease, Center for Applied Medical Research (CIMA), University of Navarra, 31008 Pamplona, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008 Pamplona, Spain
| | - Beatriz Pelacho
- Department of Biochemistry and Genetics, University of Navarra, 31008 Pamplona, Spain; (L.P.A.-A.); (N.G.)
- Program of Cardiovascular Disease, Center for Applied Medical Research (CIMA), University of Navarra, 31008 Pamplona, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008 Pamplona, Spain
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17
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Wang X, Yang G, Li J, Meng C, Xue Z. Dynamic molecular signatures of acute myocardial infarction based on transcriptomics and metabolomics. Sci Rep 2024; 14:10175. [PMID: 38702356 PMCID: PMC11068872 DOI: 10.1038/s41598-024-60945-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 04/29/2024] [Indexed: 05/06/2024] Open
Abstract
Acute myocardial infarction (AMI) commonly precedes ventricular remodeling, heart failure. Few dynamic molecular signatures have gained widespread acceptance in mainstream clinical testing despite the discovery of many potential candidates. These unmet needs with respect to biomarker and drug discovery of AMI necessitate a prioritization. We enrolled patients with AMI aged between 30 and 70. RNA-seq analysis was performed on the peripheral blood mononuclear cells collected from the patients at three time points: 1 day, 7 days, and 3 months after AMI. PLC/LC-MS analysis was conducted on the peripheral blood plasma collected from these patients at the same three time points. Differential genes and metabolites between groups were screened by bio-informatics methods to understand the dynamic changes of AMI in different periods. We obtained 15 transcriptional and 95 metabolite expression profiles at three time points after AMI through high-throughput sequencing. AMI-1d: enrichment analysis revealed the biological features of 1 day after AMI primarily included acute inflammatory response, elevated glycerophospholipid metabolism, and decreased protein synthesis capacity. Phosphatidylcholine (PC) and phosphatidylethanolamine (PE) might stand promising biomarkers to differentiate post-AMI stage. Anti-inflammatory therapy during the acute phase is an important direction for preventing related pathology. AMI-7d: the biological features of this stage primarily involved the initiation of cardiac fibrosis response and activation of platelet adhesion pathways. Accompanied by upregulated TGF-beta signaling pathway and ECM receptor interaction, GP5 help assess platelet activation, a potential therapeutic target to improve haemostasis. AMI-3m: the biological features of 3 months after AMI primarily showed a vascular regeneration response with VEGF signaling pathway, NOS3 and SHC2 widely activated, which holds promise for providing new therapeutic approaches for AMI. Our analysis highlights transcriptional and metabolomics signatures at different time points after MI, which deepens our understanding of the dynamic biological responses and associated molecular mechanisms that occur during cardiac repair.
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Affiliation(s)
- Xuejiao Wang
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, No. 5 Beixiange, Xicheng District, Beijing, 100053, China
| | - Guang Yang
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, No. 5 Beixiange, Xicheng District, Beijing, 100053, China
| | - Jun Li
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, No. 5 Beixiange, Xicheng District, Beijing, 100053, China.
| | - Chao Meng
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, No. 5 Beixiange, Xicheng District, Beijing, 100053, China
| | - Zengming Xue
- Department of Cardiology, Langfang People's Hospital, Hebei Medical University, No. 37, Xinhua Road, Langfang, 065000, China.
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18
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Flori L, Lazzarini G, Spezzini J, Pirone A, Calderone V, Testai L, Miragliotta V. The isoproterenol-induced myocardial fibrosis: A biochemical and histological investigation. Biomed Pharmacother 2024; 174:116534. [PMID: 38565062 DOI: 10.1016/j.biopha.2024.116534] [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: 01/26/2024] [Revised: 03/25/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024] Open
Abstract
The isoproterenol (ISO)-induced myocardial fibrosis is considered a reliable and repeatable experimental model characterized by a relatively low mortality rate. Although is well-known that ISO stimulates the β1 adrenergic receptors at the myocardial level, a high degree of heterogeneity emerges around the doses and duration of the treatment generating unclear results. Therefore, we propose to gain insights into the progression of ISO-induced myocardial fibrosis, in order to critically analyze and optimize the experimental model. Male Wistar rats (12-14-week-old) were submitted to subcutaneous injection of ISO, in particular, two doses were selected: the commonly used dose of 5 mg/kg and a lower dose of 1 mg/kg, administered for 3 and 6 days. Biochemical and histological examinations were conducted either immediately after the last administration or after a recovering period of 7 or 14 days from the initial administration. Noteworthy, from our investigation emerged that even the lower dose of ISO was able to induce the maximal biochemical and histological alterations, suggesting that lower doses should be considered to control the progression of the damage more precisely and to identify a prodromic phase in which intervention with pharmacological or nutraceutical tools can be effectively attempted.
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Affiliation(s)
- Lorenzo Flori
- Department of Pharmacy, University of Pisa, via Bonanno 6-56120, Pisa, Italy
| | - Giulia Lazzarini
- Department of Veterinary Sciences, University of Pisa, via Delle Piagge 2-56124, Pisa, Italy
| | - Jacopo Spezzini
- Department of Pharmacy, University of Pisa, via Bonanno 6-56120, Pisa, Italy
| | - Andrea Pirone
- Department of Veterinary Sciences, University of Pisa, via Delle Piagge 2-56124, Pisa, Italy
| | - Vincenzo Calderone
- Department of Pharmacy, University of Pisa, via Bonanno 6-56120, Pisa, Italy; CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa 56126, Italy
| | - Lara Testai
- Department of Pharmacy, University of Pisa, via Bonanno 6-56120, Pisa, Italy; CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa 56126, Italy.
| | - Vincenzo Miragliotta
- Department of Veterinary Sciences, University of Pisa, via Delle Piagge 2-56124, Pisa, Italy; CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa 56126, Italy
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Shen SC, Xu J, Cheng C, Xiang XJ, Hong BY, Zhang M, Gong C, Ma LK. Macrophages promote the transition from myocardial ischemia reperfusion injury to cardiac fibrosis in mice through GMCSF/CCL2/CCR2 and phenotype switching. Acta Pharmacol Sin 2024; 45:959-974. [PMID: 38225394 PMCID: PMC11053127 DOI: 10.1038/s41401-023-01222-3] [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: 06/28/2023] [Accepted: 12/19/2023] [Indexed: 01/17/2024] Open
Abstract
Following acute myocardial ischemia reperfusion (MIR), macrophages infiltrate damaged cardiac tissue and alter their polarization phenotype to respond to acute inflammation and chronic fibrotic remodeling. In this study we investigated the role of macrophages in post-ischemic myocardial fibrosis and explored therapeutic targets for myocardial fibrosis. Male mice were subjected to ligation of the left coronary artery for 30 min. We first detected the levels of chemokines in heart tissue that recruited immune cells infiltrating into the heart, and found that granulocyte-macrophage colony-stimulating factor (GMCSF) released by mouse cardiac microvascular endothelial cells (MCMECs) peaked at 6 h after reperfusion, and c-c motif chemokine ligand 2 (CCL2) released by GMCSF-induced macrophages peaked at 24 h after reperfusion. In co-culture of BMDMs with MCMECs, we demonstrated that GMCSF derived from MCMECs stimulated the release of CCL2 by BMDMs and effectively promoted the migration of BMDMs. We also confirmed that GMCSF promoted M1 polarization of macrophages in vitro, while GMCSF neutralizing antibodies (NTABs) blocked CCL2/CCR2 signaling. In MIR mouse heart, we showed that GMCSF activated CCL2/CCR2 signaling to promote NLRP3/caspase-1/IL-1β-mediated and amplified inflammatory damage. Knockdown of CC chemokine receptor 2 gene (CCR2-/-), or administration of specific CCR2 inhibitor RS102895 (5 mg/kg per 12 h, i.p., one day before MIR and continuously until the end of the experiment) effectively reduced the area of myocardial infarction, and down-regulated inflammatory mediators and NLRP3/Caspase-1/IL-1β signaling. Mass cytometry confirmed that M2 macrophages played an important role during fibrosis, while macrophage-depleted mice exhibited significantly reduced transforming growth factor-β (Tgf-β) levels in heart tissue after MIR. In co-culture of macrophages with fibroblasts, treatment with recombinant mouse CCL2 stimulated macrophages to release a large amount of Tgf-β, and promoted the release of Col1α1 by fibroblasts. This effect was diminished in BMDMs from CCR2-/- mice. After knocking out or inhibiting CCR2-gene, the levels of Tgf-β were significantly reduced, as was the level of myocardial fibrosis, and cardiac function was protected. This study confirms that the acute injury to chronic fibrosis transition after MIR in mice is mediated by GMCSF/CCL2/CCR2 signaling in macrophages through NLRP3 inflammatory cascade and the phenotype switching.
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Affiliation(s)
- Shi-Chun Shen
- Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China
| | - Jie Xu
- Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China
| | - Cheng Cheng
- Department of Cardiology, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Xin-Jian Xiang
- Department of Plastic and Reconstructive Surgery, the Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Bao-Yu Hong
- Department of Pediatrics, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Meng Zhang
- Department of Cardiology, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Chen Gong
- Department of Pediatrics, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China.
| | - Li-Kun Ma
- Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China.
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20
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Costa CRR, Chalgoumi R, Baker A, Guillou C, Yamaguti PM, Simancas Escorcia V, Abbad L, Amorin BR, de Lima CL, Cannaya V, Benassarou M, Berdal A, Chatziantoniou C, Cases O, Cosette P, Kozyraki R, Acevedo AC. Gingival proteomics reveals the role of TGF beta and YAP/TAZ signaling in Raine syndrome fibrosis. Sci Rep 2024; 14:9497. [PMID: 38664418 PMCID: PMC11045870 DOI: 10.1038/s41598-024-59713-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Raine syndrome (RNS) is a rare autosomal recessive osteosclerotic dysplasia. RNS is caused by loss-of-function disease-causative variants of the FAM20C gene that encodes a kinase that phosphorylates most of the secreted proteins found in the body fluids and extracellular matrix. The most common RNS clinical features are generalized osteosclerosis, facial dysmorphism, intracerebral calcifications and respiratory defects. In non-lethal RNS forms, oral traits include a well-studied hypoplastic amelogenesis imperfecta (AI) and a much less characterized gingival phenotype. We used immunomorphological, biochemical, and siRNA approaches to analyze gingival tissues and primary cultures of gingival fibroblasts of two unrelated, previously reported RNS patients. We showed that fibrosis, pathological gingival calcifications and increased expression of various profibrotic and pro-osteogenic proteins such as POSTN, SPARC and VIM were common findings. Proteomic analysis of differentially expressed proteins demonstrated that proteins involved in extracellular matrix (ECM) regulation and related to the TGFβ/SMAD signaling pathway were increased. Functional analyses confirmed the upregulation of TGFβ/SMAD signaling and subsequently uncovered the involvement of two closely related transcription cofactors important in fibrogenesis, Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ). Knocking down of FAM20C confirmed the TGFβ-YAP/TAZ interplay indicating that a profibrotic loop enabled gingival fibrosis in RNS patients. In summary, our in vivo and in vitro data provide a detailed description of the RNS gingival phenotype. They show that gingival fibrosis and calcifications are associated with, and most likely caused by excessed ECM production and disorganization. They furthermore uncover the contribution of increased TGFβ-YAP/TAZ signaling in the pathogenesis of the gingival fibrosis.
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Affiliation(s)
- Cláudio Rodrigues Rezende Costa
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France
- Oral Center for Inherited Diseases, University Hospital of Brasília, Oral Histopathology Laboratory, Department of Dentistry, Health Sciences Faculty, University of Brasília (UnB), Brasília, Brazil
- Department of Dentistry, Health Group of Natal (GSAU-NT), Brazilian Air Force, Natal, Parnamirim, Brazil
| | - Rym Chalgoumi
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France
| | - Amina Baker
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France
| | - Clément Guillou
- Rouen University, INSA Rouen Normandie, CNRS, Normandie Univ, PBS UMR 6270, 76000, Rouen, France
- Rouen University, INSERM US51, CNRS UAR 2026, HeRacles PISSARO, 76000, Rouen, France
| | - Paulo Marcio Yamaguti
- Oral Center for Inherited Diseases, University Hospital of Brasília, Oral Histopathology Laboratory, Department of Dentistry, Health Sciences Faculty, University of Brasília (UnB), Brasília, Brazil
| | - Victor Simancas Escorcia
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France
- Grupo de Investigación GENOMA, Universidad del Sinú, Cartagena, Colombia
| | - Lilia Abbad
- MRS1155, INSERM, Sorbonne Université, 75020, Paris, France
| | - Bruna Rabelo Amorin
- Oral Center for Inherited Diseases, University Hospital of Brasília, Oral Histopathology Laboratory, Department of Dentistry, Health Sciences Faculty, University of Brasília (UnB), Brasília, Brazil
| | - Caroline Lourenço de Lima
- Oral Center for Inherited Diseases, University Hospital of Brasília, Oral Histopathology Laboratory, Department of Dentistry, Health Sciences Faculty, University of Brasília (UnB), Brasília, Brazil
| | - Vidjea Cannaya
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France
| | - Mourad Benassarou
- Service de Chirurgie Maxillo-Faciale et Stomatologie, Hôpital de La Pitié Salpétrière, Sorbonne Université, 75006, Paris, France
| | - Ariane Berdal
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France
- CRMR O-RARES, Hôpital Rothshild, UFR d'Odontologie-Garancière, Université de Paris Cité, 75012, Paris, France
| | | | - Olivier Cases
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France
| | - Pascal Cosette
- Rouen University, INSA Rouen Normandie, CNRS, Normandie Univ, PBS UMR 6270, 76000, Rouen, France
- Rouen University, INSERM US51, CNRS UAR 2026, HeRacles PISSARO, 76000, Rouen, France
| | - Renata Kozyraki
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France.
- CRMR O-RARES, Hôpital Rothshild, UFR d'Odontologie-Garancière, Université de Paris Cité, 75012, Paris, France.
- Rouen University, UFR SANTE ROUEN NORMANDIE, Inserm 1096, 76000, Rouen, France.
| | - Ana Carolina Acevedo
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris Cité, Oral Molecular Pathophysiology, 75006, Paris, France
- Oral Center for Inherited Diseases, University Hospital of Brasília, Oral Histopathology Laboratory, Department of Dentistry, Health Sciences Faculty, University of Brasília (UnB), Brasília, Brazil
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Bessa-Gonçalves M, Bragança B, Martins-Dias E, Vinhas A, Certal M, Rodrigues T, Ferreirinha F, Costa MA, Correia-de-Sá P, Fontes-Sousa AP. Blockage of the adenosine A 2B receptor prevents cardiac fibroblasts overgrowth in rats with pulmonary arterial hypertension. Purinergic Signal 2024; 20:163-179. [PMID: 37402944 PMCID: PMC10997572 DOI: 10.1007/s11302-023-09952-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 06/12/2023] [Indexed: 07/06/2023] Open
Abstract
Sustained pressure overload and fibrosis of the right ventricle (RV) are the leading causes of mortality in pulmonary arterial hypertension (PAH). Although the role of adenosine in PAH has been attributed to the control of pulmonary vascular tone, cardiac reserve, and inflammatory processes, the involvement of the nucleoside in RV remodelling remains poorly understood. Conflicting results exist on targeting the low-affinity adenosine A2B receptor (A2BAR) for the treatment of PAH mostly because it displays dual roles in acute vs. chronic lung diseases. Herein, we investigated the role of the A2BAR in the viability/proliferation and collagen production by cardiac fibroblasts (CFs) isolated from RVs of rats with monocrotaline (MCT)-induced PAH. CFs from MCT-treated rats display higher cell viability/proliferation capacity and overexpress A2BAR compared to the cells from healthy littermates. The enzymatically stable adenosine analogue, 5'-N-ethylcarboxamidoadenosine (NECA, 1-30 μM), concentration-dependently increased growth, and type I collagen production by CFs originated from control and PAH rats, but its effects were more prominent in cells from rats with PAH. Blockage of the A2BAR with PSB603 (100 nM), but not of the A2AAR with SCH442416 (100 nM), attenuated the proliferative effect of NECA in CFs from PAH rats. The A2AAR agonist, CGS21680 (3 and 10 nM), was virtually devoid of effect. Overall, data suggest that adenosine signalling via A2BAR may contribute to RV overgrowth secondary to PAH. Therefore, blockage of the A2AAR may be a valuable therapeutic alternative to mitigate cardiac remodelling and prevent right heart failure in PAH patients.
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Affiliation(s)
- Mafalda Bessa-Gonçalves
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Bruno Bragança
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
- Departamento de Cardiologia, Centro Hospitalar Tâmega e Sousa, Penafiel, Portugal
| | - Eduardo Martins-Dias
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Adriana Vinhas
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Mariana Certal
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Tânia Rodrigues
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Fátima Ferreirinha
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Maria Adelina Costa
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
- Departamento de Química, ICBAS-UP, Porto, Portugal
| | - Paulo Correia-de-Sá
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
| | - Ana Patrícia Fontes-Sousa
- Laboratório de Farmacologia e Neurobiologia, Departamento de Imuno-Fisiologia e Farmacologia/Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
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22
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Basara G, Celebi LE, Ronan G, Discua Santos V, Zorlutuna P. 3D bioprinted aged human post-infarct myocardium tissue model. Health Sci Rep 2024; 7:e1945. [PMID: 38655426 PMCID: PMC11035382 DOI: 10.1002/hsr2.1945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/24/2023] [Accepted: 02/07/2024] [Indexed: 04/26/2024] Open
Abstract
Background and Aims Fibrotic tissue formed after myocardial infarction (MI) can be as detrimental as MI itself. However, current in vitro cardiac fibrosis models fail to recapitulate the complexities of post-MI tissue. Moreover, although MI and subsequent fibrosis is most prominent in the aged population, the field suffers from inadequate aged tissue models. Herein, an aged human post-MI tissue model, representing the native microenvironment weeks after initial infarction, is engineered using three-dimensional bioprinting via creation of individual bioinks to specifically mimic three distinct regions: remote, border, and scar. Methods The aged post-MI tissue model is engineered through combination of gelatin methacryloyl, methacrylated hyaluronic acid, aged type I collagen, and photoinitiator at variable concentrations with different cell types, including aged human induced pluripotent stem cell-derived cardiomyocytes, endothelial cells, cardiac fibroblasts, and cardiac myofibroblasts, by introducing a methodology which utilizes three printheads of the bioprinter to model aged myocardium. Then, using cell-specific proteins, the cell types that comprised each region are confirmed using immunofluorescence. Next, the beating characteristics are analyzed. Finally, the engineered aged post-MI tissue model is used as a benchtop platform to assess the therapeutic effects of stem cell-derived extracellular vesicles on the scar region. Results As a result, high viability (>74%) was observed in each region of the printed model. Constructs demonstrated functional behavior, exhibiting a beating velocity of 6.7 μm/s and a frequency of 0.3 Hz. Finally, the effectiveness of hiPSC-EV and MSC-EV treatment was assessed. While hiPSC-EV treatment showed no significant changes, MSC-EV treatment notably increased cardiomyocyte beating velocity, frequency, and confluency, suggesting a regenerative potential. Conclusion In conclusion, we envision that our approach of modeling post-MI aged myocardium utilizing three printheads of the bioprinter may be utilized for various applications in aged cardiac microenvironment modeling and testing novel therapeutics.
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Affiliation(s)
- Gozde Basara
- Department of Aerospace and Mechanical EngineeringUniversity of Notre DameNotre DameIndianaUSA
| | - Lara Ece Celebi
- Department of Aerospace and Mechanical EngineeringUniversity of Notre DameNotre DameIndianaUSA
- Bioengineering Graduate ProgramUniversity of Notre DameNotre DameIndianaUSA
| | - George Ronan
- Department of Aerospace and Mechanical EngineeringUniversity of Notre DameNotre DameIndianaUSA
- Bioengineering Graduate ProgramUniversity of Notre DameNotre DameIndianaUSA
| | | | - Pinar Zorlutuna
- Department of Aerospace and Mechanical EngineeringUniversity of Notre DameNotre DameIndianaUSA
- Bioengineering Graduate ProgramUniversity of Notre DameNotre DameIndianaUSA
- Department of Chemical and Biomolecular EngineeringUniversity of Notre DameNotre DameIndianaUSA
- Harper Cancer Research InstituteUniversity of Notre DameNotre DameIndianaUSA
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23
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Liu X, Li B, Wang S, Zhang E, Schultz M, Touma M, Monteiro Da Rocha A, Evans SM, Eichmann A, Herron T, Chen R, Xiong D, Jaworski A, Weiss S, Si MS. Stromal Cell-SLIT3/Cardiomyocyte-ROBO1 Axis Regulates Pressure Overload-Induced Cardiac Hypertrophy. Circ Res 2024; 134:913-930. [PMID: 38414132 PMCID: PMC10977056 DOI: 10.1161/circresaha.122.321292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 02/08/2024] [Accepted: 02/12/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND Recently shown to regulate cardiac development, the secreted axon guidance molecule SLIT3 maintains its expression in the postnatal heart. Despite its known expression in the cardiovascular system after birth, SLIT3's relevance to cardiovascular function in the postnatal state remains unknown. As such, the objectives of this study were to determine the postnatal myocardial sources of SLIT3 and to evaluate its functional role in regulating the cardiac response to pressure overload stress. METHODS We performed in vitro studies on cardiomyocytes and myocardial tissue samples from patients and performed in vivo investigation with SLIT3 and ROBO1 (roundabout homolog 1) mutant mice undergoing transverse aortic constriction to establish the role of SLIT3-ROBO1 in adverse cardiac remodeling. RESULTS We first found that SLIT3 transcription was increased in myocardial tissue obtained from patients with congenital heart defects that caused ventricular pressure overload. Immunostaining of hearts from WT (wild-type) and reporter mice revealed that SLIT3 is secreted by cardiac stromal cells, namely fibroblasts and vascular mural cells, within the heart. Conditioned media from cardiac fibroblasts and vascular mural cells both stimulated cardiomyocyte hypertrophy in vitro, an effect that was partially inhibited by an anti-SLIT3 antibody. Also, the N-terminal, but not the C-terminal, fragment of SLIT3 and the forced overexpression of SLIT3 stimulated cardiomyocyte hypertrophy and the transcription of hypertrophy-related genes. We next determined that ROBO1 was the most highly expressed roundabout receptor in cardiomyocytes and that ROBO1 mediated SLIT3's hypertrophic effects in vitro. In vivo, Tcf21+ fibroblast and Tbx18+ vascular mural cell-specific knockout of SLIT3 in mice resulted in decreased left ventricular hypertrophy and cardiac fibrosis after transverse aortic constriction. Furthermore, α-MHC+ cardiomyocyte-specific deletion of ROBO1 also preserved left ventricular function and abrogated hypertrophy, but not fibrosis, after transverse aortic constriction. CONCLUSIONS Collectively, these results indicate a novel role for the SLIT3-ROBO1-signaling axis in regulating postnatal cardiomyocyte hypertrophy induced by pressure overload.
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Affiliation(s)
- Xiaoxiao Liu
- Department of Cardiac Surgery (X.L., B.L., S.W., D.X., M.-S.S.), Michigan Medicine, Ann Arbor
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai Medical College of Fudan University, China (X.L., R.C.)
| | - Baolei Li
- Department of Cardiac Surgery (X.L., B.L., S.W., D.X., M.-S.S.), Michigan Medicine, Ann Arbor
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, China (B.L.)
| | - Shuyun Wang
- Department of Cardiac Surgery (X.L., B.L., S.W., D.X., M.-S.S.), Michigan Medicine, Ann Arbor
| | - Erge Zhang
- Division of Cardiac Surgery, Department of Surgery (E.Z., M.S., M.-S.S.), David Geffen School of Medicine University of California, Los Angeles
| | - Megan Schultz
- Division of Cardiac Surgery, Department of Surgery (E.Z., M.S., M.-S.S.), David Geffen School of Medicine University of California, Los Angeles
| | - Marlin Touma
- Department of Pediatrics (M.T.), David Geffen School of Medicine University of California, Los Angeles
| | - Andre Monteiro Da Rocha
- Division of Cardiovascular Medicine, Department of Internal Medicine (A.M.D.R., T.H.), Michigan Medicine, Ann Arbor
| | - Sylvia M. Evans
- Skaggs School of Pharmacy and Pharmaceutical Sciences (S.M.E.), University of California, San Diego, La Jolla
- Department of Medicine, School of Medicine (S.M.E.), University of California, San Diego, La Jolla
| | - Anne Eichmann
- Department of Internal Medicine, Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.E.)
- INSERM, Paris Cardiovascular Research Center (PARCC), Université de Paris, France (A.E.)
| | - Todd Herron
- Division of Cardiovascular Medicine, Department of Internal Medicine (A.M.D.R., T.H.), Michigan Medicine, Ann Arbor
| | - Ruizhen Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai Medical College of Fudan University, China (X.L., R.C.)
| | - Dingding Xiong
- Department of Cardiac Surgery (X.L., B.L., S.W., D.X., M.-S.S.), Michigan Medicine, Ann Arbor
| | - Alexander Jaworski
- Division of Biology and Medicine, Department of Neuroscience, Brown University, Providence, RI (A.J.)
| | - Stephen Weiss
- Life Sciences Institute, University of Michigan, Ann Arbor (S.W.)
| | - Ming-Sing Si
- Department of Cardiac Surgery (X.L., B.L., S.W., D.X., M.-S.S.), Michigan Medicine, Ann Arbor
- Division of Cardiac Surgery, Department of Surgery (E.Z., M.S., M.-S.S.), David Geffen School of Medicine University of California, Los Angeles
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Palfrey HA, Kumar A, Pathak R, Stone KP, Gettys TW, Murthy SN. Adverse Cardiac Events of Hypercholesterolemia Are Enhanced by Sitagliptin Administration in Sprague Dawley Rats. RESEARCH SQUARE 2024:rs.3.rs-4075353. [PMID: 38562676 PMCID: PMC10984018 DOI: 10.21203/rs.3.rs-4075353/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Background Cardiovascular disease (CVD) affects millions worldwide and is the leading cause of death among non-communicable diseases. Western diets typically comprise of meat and dairy products, both of which are rich in cholesterol (Cho) and methionine (Met), two well-known compounds with atherogenic capabilities. Despite their individual effects, literature on a dietary combination of the two in the context of CVD are limited. An additional interest was to investigate the cardioprotective potential of sitagliptin, an anti-type 2 diabetic drug. Thus, we hypothesized that atherogenic feeding would result in adverse cardiac effects and would attenuate upon sitagliptin administration. Methods Six-week-old adult male Sprague-Dawley rats were fed either a control (Con), high Met (1.5%), high Cho (2.0%), or high Met (1.5%) + high Cho (2.0%) diet for 35 days. They were orally gavaged with vehicle (water) or sitagliptin (100 mg/kg/d) from day 10 through 35. On day 36, rats were euthanized, and tissues were collected for analysis. Results Histopathological evaluation revealed a reduction in myocardial striations and increased collagen deposition in hypercholesterolemia (HChol), responses that became exacerbated upon sitagliptin administration. Cardiac pro-inflammatory and pro-fibrotic responses were adversely impacted in similar fashion. The addition of Met to Cho (MC) attenuated all adverse structural and biochemical responses, with or without sitagliptin. Conclusion Adverse cardiac outcomes in HChol were enhanced with sitagliptin administration and such effects were alleviated by Met. Our findings could be significant for understanding the risk-benefit of sitagliptin in type 2 diabetics who are known to consume atherogenic diets.
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Affiliation(s)
| | - Avinash Kumar
- Southern University and Agricultural and Mechanical College
| | - Rashmi Pathak
- Southern University and Agricultural and Mechanical College
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25
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Improta-Caria AC, Rodrigues LF, Joaquim VHA, De Sousa RAL, Fernandes T, Oliveira EM. MicroRNAs regulating signaling pathways in cardiac fibrosis: potential role of the exercise training. Am J Physiol Heart Circ Physiol 2024; 326:H497-H510. [PMID: 38063810 PMCID: PMC11219062 DOI: 10.1152/ajpheart.00410.2023] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 02/09/2024]
Abstract
Cardiovascular and metabolic diseases such as hypertension, type 2 diabetes, and obesity develop long-term fibrotic processes in the heart, promoting pathological cardiac remodeling, including after myocardial infarction, reparative fibrotic processes also occur. These processes are regulated by many intracellular signaling pathways that have not yet been completely elucidated, including those associated with microRNA (miRNA) expression. miRNAs are small RNA transcripts (18-25 nucleotides in length) that act as posttranscriptionally regulators of gene expression, inhibiting or degrading one or more target messenger RNAs (mRNAs), and proven to be involved in many biological processes such as cell cycle, differentiation, proliferation, migration, and apoptosis, directly affecting the pathophysiology of several diseases, including cardiac fibrosis. Exercise training can modulate the expression of miRNAs and it is known to be beneficial in various cardiovascular diseases, attenuating cardiac fibrosis processes. However, the signaling pathways modulated by the exercise associated with miRNAs in cardiac fibrosis were not fully understood. Thus, this review aims to analyze the expression of miRNAs that modulate signaling pathways in cardiac fibrosis processes that can be regulated by exercise training.
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Affiliation(s)
- Alex Cleber Improta-Caria
- Laboratory of Biochemistry and Molecular Biology of the Exercise, Physical Education and Sport School, University of São Paulo, São Paulo, Brazil
| | - Luis Felipe Rodrigues
- Laboratory of Biochemistry and Molecular Biology of the Exercise, Physical Education and Sport School, University of São Paulo, São Paulo, Brazil
| | - Victor Hugo Antonio Joaquim
- Laboratory of Biochemistry and Molecular Biology of the Exercise, Physical Education and Sport School, University of São Paulo, São Paulo, Brazil
| | | | - Tiago Fernandes
- Laboratory of Biochemistry and Molecular Biology of the Exercise, Physical Education and Sport School, University of São Paulo, São Paulo, Brazil
| | - Edilamar Menezes Oliveira
- Laboratory of Biochemistry and Molecular Biology of the Exercise, Physical Education and Sport School, University of São Paulo, São Paulo, Brazil
- Departments of Internal Medicine, Center for Regenerative Medicine, USF Health Heart Institute, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States
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He X, Liang J, Li X, Wang Y, Zhang X, Chen D, Wu L, Wang S. Dahuang zhechong pill ameliorates hepatic fibrosis by regulating gut microbiota and metabolites. JOURNAL OF ETHNOPHARMACOLOGY 2024; 321:117402. [PMID: 37967779 DOI: 10.1016/j.jep.2023.117402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 10/25/2023] [Accepted: 11/06/2023] [Indexed: 11/17/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE DHZCP is a traditional Chinese medicinal formula in "The Synopsis of Prescriptions of the Golden Chamber" that has been often used in the treatment of hepatic disorders, gynecopathy and atherosclerosis. However, its underlying mechanisms in preventing hepatic fibrosis remain incompletely understood. AIM OF THE STUDY This study aims to explore the therapeutic efficacy and potential mechanism of DHZCP in a CCL4-induced experimental hepatic fibrosis rat model. MATERIALS AND METHODS DHZCP was orally administered at doses of 0.168, 0.084 and 0.042 g⋅kg-1⋅d-1 in a CCL4-induced hepatic fibrosis model using SD rats. Histopathology, immunohistochemistry and biochemical analysis, ELISA, Flow cytometry, WB, RT-PCR, 16 S rRNA, and untargeted metabolomic analysis were used to determine the therapeutic effects and mechanisms of DHZCP in the treatment of CCL4-induced hepatic fibrosis. RESULTS Pharmacodynamically, DHZCP inhibited ALT and AST, improved liver function, decreased NF-κB, TNF-α and IL-6 in liver tissue, indicating its role in inhibiting CCL4-induced liver inflammation. Most importantly, it reduces the level of fibrosis in serum and liver tissue. Histological analysis also showed that DHZCP could effectively inhibit inflammatory cytokine infiltration and excessive collagen deposition. Mechanistically, DHZCP regulates gut microbiota, improves the proportion of firmicutes and bacteroidota at the phylum level, and increases the abundance of beneficial bacteria at the genus level, such as muribagulaceae unclassified, prevotella, alloprevotella, closteriales unclassified, lachnospiraceae unclassified and phascolarctobacterium. Instead, it reduced the abundance of two harmful bacteria, desulfovibrio and colidextribacter. Four types of metabolites such as hydrocarbons, organic nitrogen compounds, organic oxygen compounds, and organosulfur compounds were added. Furthermore, DHZCP was found to reduce the damage of intestinal barrier caused by changes in gut microbiota and metabolites. CONCLUSION DHZCP is an effective inhibitor of hepatic fibrosis by regulating gut microbiota and metabolites, improving the integrity of the intestinal barrier.
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Affiliation(s)
- Xiaoyan He
- College of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, PR China
| | - Jingtao Liang
- College of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610036, PR China
| | - Xin Li
- College of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, PR China
| | - Yao Wang
- College of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, PR China
| | - Xiaobo Zhang
- College of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, PR China
| | - Dayi Chen
- College of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, PR China.
| | - Lijuan Wu
- College of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, PR China.
| | - Shiyu Wang
- College of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, PR China.
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Azeredo PDS, Fan D, Murphy EA, Carver WE. Potential of Plant-Derived Compounds in Preventing and Reversing Organ Fibrosis and the Underlying Mechanisms. Cells 2024; 13:421. [PMID: 38474385 PMCID: PMC10930795 DOI: 10.3390/cells13050421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/15/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
Increased production of extracellular matrix is a necessary response to tissue damage and stress. In a normal healing process, the increase in extracellular matrix is transient. In some instances; however, the increase in extracellular matrix can persist as fibrosis, leading to deleterious alterations in organ structure, biomechanical properties, and function. Indeed, fibrosis is now appreciated to be an important cause of mortality and morbidity. Extensive research has illustrated that fibrosis can be slowed, arrested or even reversed; however, few drugs have been approved specifically for anti-fibrotic treatment. This is in part due to the complex pathways responsible for fibrogenesis and the undesirable side effects of drugs targeting these pathways. Natural products have been utilized for thousands of years as a major component of traditional medicine and currently account for almost one-third of drugs used clinically worldwide. A variety of plant-derived compounds have been demonstrated to have preventative or even reversal effects on fibrosis. This review will discuss the effects and the underlying mechanisms of some of the major plant-derived compounds that have been identified to impact fibrosis.
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Affiliation(s)
- Patrícia dos Santos Azeredo
- Laboratory of Atherosclerosis, Thrombosis and Cell Therapy, Institute of Biology, State University of Campinas—UNICAMP Campinas, Campinas 13083-970, Brazil;
| | - Daping Fan
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC 29209, USA;
| | - E. Angela Murphy
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC 29209, USA;
| | - Wayne E. Carver
- Department of Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC 29209, USA;
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Wang Y, Chen S, Bao S, Yao L, Wen Z, Xu L, Chen X, Guo S, Pang H, Zhou Y, Zhou P. Deciphering the fibrotic process: mechanism of chronic radiation skin injury fibrosis. Front Immunol 2024; 15:1338922. [PMID: 38426100 PMCID: PMC10902513 DOI: 10.3389/fimmu.2024.1338922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/02/2024] [Indexed: 03/02/2024] Open
Abstract
This review explores the mechanisms of chronic radiation-induced skin injury fibrosis, focusing on the transition from acute radiation damage to a chronic fibrotic state. It reviewed the cellular and molecular responses of the skin to radiation, highlighting the role of myofibroblasts and the significant impact of Transforming Growth Factor-beta (TGF-β) in promoting fibroblast-to-myofibroblast transformation. The review delves into the epigenetic regulation of fibrotic gene expression, the contribution of extracellular matrix proteins to the fibrotic microenvironment, and the regulation of the immune system in the context of fibrosis. Additionally, it discusses the potential of biomaterials and artificial intelligence in medical research to advance the understanding and treatment of radiation-induced skin fibrosis, suggesting future directions involving bioinformatics and personalized therapeutic strategies to enhance patient quality of life.
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Affiliation(s)
- Yiren Wang
- School of Nursing, Southwest Medical University, Luzhou, China
- Wound Healing Basic Research and Clinical Application Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Shouying Chen
- School of Nursing, Southwest Medical University, Luzhou, China
- Wound Healing Basic Research and Clinical Application Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Shuilan Bao
- School of Nursing, Southwest Medical University, Luzhou, China
- Wound Healing Basic Research and Clinical Application Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Li Yao
- School of Nursing, Southwest Medical University, Luzhou, China
- Wound Healing Basic Research and Clinical Application Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Zhongjian Wen
- School of Nursing, Southwest Medical University, Luzhou, China
- Wound Healing Basic Research and Clinical Application Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Lixia Xu
- School of Nursing, Southwest Medical University, Luzhou, China
| | - Xiaoman Chen
- School of Nursing, Southwest Medical University, Luzhou, China
| | - Shengmin Guo
- Department of Nursing, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Haowen Pang
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yun Zhou
- School of Medical Information and Engineering, Southwest Medical University, Luzhou, China
| | - Ping Zhou
- Wound Healing Basic Research and Clinical Application Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
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Yang G, Deng Y, Cao G, Liu C. Galectin-3 promotes fibrosis in ovarian endometriosis. PeerJ 2024; 12:e16922. [PMID: 38371379 PMCID: PMC10874174 DOI: 10.7717/peerj.16922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/19/2024] [Indexed: 02/20/2024] Open
Abstract
Objective This study aimed to investigate the potential role of galectin-3 (Gal-3) in the pathogenesis of fibrotic alterations in ovarian endometriosis (OVE). Methods In this study, we collected the ectopic endometrial tissues and eutopic endometrial tissues from 31 OVE patients treated by laparoscopy, and the eutopic endometrial tissues from 23 non-OVE patients with leiomyoma or other benign diseases were used as control. Hematoxylin and eosin (H&E) and Masson's trichrome staining were utilized for histopathological assessment. The primary normal endometrial stromal cells (NESC), ectopic endometrial stromal cells (ECSC), and eutopic endometrial stromal cells (EUSC) were isolated. Gal-3 overexpression plasmids (Gal-OE) and short hairpin RNA targeting Gal-3 (Gal-3-shRNA) were transfected into the immortalized human endometriotic cell line 12Z, respectively. RT-qPCR, Western blot analysis, and immunohistochemistry were used to detect the mRNA and protein expression levels of Gal-3, type I collagen (COL-1), connective tissue growth factor (CTGF) and α-smooth muscle actin (α-SMA), respectively. Results H&E and Masson staining showed that ovarian ectopic endometrium exhibited glandular hyperplasia, high columnar glandular epithelium, apical plasma secretion, more subnuclear vacuoles, and obvious fibrosis, compared with normal endometrium. The mRNA and protein levels of Gal-3 , CTGF, α-SMA, and COL-1 were all upregulated in the ectopic endometrial tissues of OVE patients compared to the eutopic endometrial tissues from OVE patients and non-OVE patients. Moreover, ECSC expressed higher levels of Gal-3, CTGF, α-SMA, and COL-1 than EUSC and NESC. Follow-up investigations demonstrated that the Gal-3 overexpression substantially increased fibrosis-related markers including CTGF, α-SMA, and COL-1 within the 12Z cell line. Conversely, Gal-3 knockdown showed the opposite effects. Conclusion Gal-3 promotes fibrosis in OVE, positioning it as a prospective therapeutic target for mitigating fibrosis in endometriosis.
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Affiliation(s)
- Guimin Yang
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital of Capital Medical University, Beijing, China
| | - Yupeng Deng
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital of Capital Medical University, Beijing, China
| | - Guangming Cao
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital of Capital Medical University, Beijing, China
| | - Chongdong Liu
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital of Capital Medical University, Beijing, China
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Janubová M, Žitňanová I. The effects of vitamin D on different types of cells. Steroids 2024; 202:109350. [PMID: 38096964 DOI: 10.1016/j.steroids.2023.109350] [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: 04/25/2023] [Revised: 11/24/2023] [Accepted: 12/07/2023] [Indexed: 12/25/2023]
Abstract
Vitamin D is neccessary for regulation of calcium and phosphorus metabolism in bones, affects imunity, the cardiovascular system, muscles, skin, epithelium, extracellular matrix, the central nervous system, and plays arole in prevention of aging-associated diseases. Vitamin D receptor is expressed in almost all types of cells and its activation leads to modulation of different signaling pathways. In this review, we have analysed the current knowledge of 1,25-dihydroxyvitamin D3 or 25-hydroxyvitamin D3 effects on metabolism of cells important for the function of the cardiovascular system (endothelial cells, vascular smooth muscle cells, cardiac cells and pericytes), tissue healing (fibroblasts), epithelium (various types of epithelial cells) and the central nervous system (neurons, astrocytes and microglia). The goal of this review was to compare the effects of vitamin D on the above mentioned cells in in vitro conditions and to summarize what is known in this field of research.
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Affiliation(s)
- Mária Janubová
- Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry, Comenius University, 813 72 Bratislava, Slovakia.
| | - Ingrid Žitňanová
- Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry, Comenius University, 813 72 Bratislava, Slovakia
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31
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Lin LC, Liu ZY, Yang JJ, Zhao JY, Tao H. Lipid metabolism reprogramming in cardiac fibrosis. Trends Endocrinol Metab 2024; 35:164-175. [PMID: 37949734 DOI: 10.1016/j.tem.2023.10.004] [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: 10/11/2023] [Accepted: 10/11/2023] [Indexed: 11/12/2023]
Abstract
Cardiac fibrosis is a critical pathophysiological process that occurs with diverse types of cardiac injury. Lipids are the most important bioenergy substrates for maintaining optimal heart performance and act as second messengers to transduce signals within cardiac cells. However, lipid metabolism reprogramming is a double-edged sword in the regulation of cardiomyocyte homeostasis and heart function. Moreover, lipids can exert diverse effects on cardiac fibrosis through different signaling pathways. In this review, we provide a brief overview of aberrant cardiac lipid metabolism and recent progress in pharmacological research targeting lipid metabolism alterations in cardiac fibrosis.
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Affiliation(s)
- Li-Chan Lin
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Zhi-Yan Liu
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Jing-Jing Yang
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
| | - Jian-Yuan Zhao
- Institute for Developmental and Regenerative Cardiovascular Medicine, MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
| | - Hui Tao
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China; Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
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32
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Martínez-Fernández J, Almengló C, Babarro B, Iglesias-Rey R, García-Caballero T, Fernández ÁL, Souto-Bayarri M, González-Juanatey JR, Álvarez E. Edoxaban treatment in a post-infarction experimental model. Eur J Pharmacol 2024; 962:176216. [PMID: 38040081 DOI: 10.1016/j.ejphar.2023.176216] [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: 07/28/2023] [Revised: 11/04/2023] [Accepted: 11/16/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND The sequelae of myocardial infarction (MI) require specific pharmacological therapy to minimise the post-MI remodelling, which in many cases evolves into cardiovascular complications. The aim of this study was to analyse the effect of edoxaban, an oral anticoagulant, on cardiac recovery in a rat model of permanent coronary artery ligation. METHODS An experimental method to assess the post-MI remodelling in rats for 4 weeks, based on cardiac magnetic resonance imaging (MRI) and final histological analysis of the hearts was performed. The influence of daily oral treatment with edoxaban (20 mg/kg/day) for 28 days post-MI was analysed in comparison to vehicle. RESULTS In our model, edoxaban was shown to be safe and bleeding was observed in 1 of 10 animals. General physical recovery of the treated animals was shown by higher body weight recovery compared with non-treated animals (38.6 ± 2.9 vs. 29.9 ± 3.1 g, respectively, after 28 days). There was not a pronounced effect of edoxaban in post-MI cardiac remodelling, but mitigated fibrosis was observed by the reduced expression of vascular endothelial growth factor and tumour growth factor β1 in the peri-infarct zone. CONCLUSIONS Our analysis provided the experimental basis to support the feasibility of MRI to study cardiac function and characterise myocardial scarring in a rat model. Overall data suggested the safety of edoxaban in the model, and compared to placebo, it showed a better post-MI recovery, probably by reducing fibrosis of the heart. Further research on mid-term cardiac recovery with edoxaban after MI is justified.
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Affiliation(s)
- Javier Martínez-Fernández
- Servicio de Radiología, Complexo Hospitalario Universitario de Santiago de Compostela, Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS). SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain
| | - Cristina Almengló
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS). SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain
| | - Borja Babarro
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS). SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain
| | - Ramón Iglesias-Rey
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain
| | - Tomás García-Caballero
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS). SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain; Department of Morphological Sciences, School of Medicine, University of Santiago de Compostela and University Clinical Hospital, 15782, Santiago de Compostela, Spain
| | - Ángel L Fernández
- Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain; CIBERCV, Madrid, Spain
| | - Miguel Souto-Bayarri
- Servicio de Radiología, Complexo Hospitalario Universitario de Santiago de Compostela, Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS). SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain
| | - José R González-Juanatey
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS). SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain; Departamento de Medicina, Universidad de Santiago de Compostela, 15782, A Coruña, Spain; CIBERCV, Madrid, Spain; Servicio de Cardiología y Unidad de Hemodinámica. Complexo Hospitalario Universitario de Santiago de Compostela (CHUS). SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain
| | - Ezequiel Álvarez
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS). SERGAS, Travesía da Choupana s/n, A Coruña, Santiago de Compostela, 15706, Spain; CIBERCV, Madrid, Spain; Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, A Coruña, Spain.
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Gehris J, Ervin C, Hawkins C, Womack S, Churillo AM, Doyle J, Sinusas AJ, Spinale FG. Fibroblast activation protein: Pivoting cancer/chemotherapeutic insight towards heart failure. Biochem Pharmacol 2024; 219:115914. [PMID: 37956895 PMCID: PMC10824141 DOI: 10.1016/j.bcp.2023.115914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/21/2023]
Abstract
An important mechanism for cancer progression is degradation of the extracellular matrix (ECM) which is accompanied by the emergence and proliferation of an activated fibroblast, termed the cancer associated fibroblast (CAF). More specifically, an enzyme pathway identified to be amplified with local cancer progression and proliferation of the CAF, is fibroblast activation protein (FAP). The development and progression of heart failure (HF) irrespective of the etiology is associated with left ventricular (LV) remodeling and changes in ECM structure and function. As with cancer, HF progression is associated with a change in LV myocardial fibroblast growth and function, and expresses a protein signature not dissimilar to the CAF. The overall goal of this review is to put forward the postulate that scientific discoveries regarding FAP in cancer as well as the development of specific chemotherapeutics could be pivoted to target the emergence of FAP in the activated fibroblast subtype and thus hold translationally relevant diagnostic and therapeutic targets in HF.
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Affiliation(s)
- John Gehris
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Charlie Ervin
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Charlotte Hawkins
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Sydney Womack
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Amelia M Churillo
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Jonathan Doyle
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States
| | - Albert J Sinusas
- Yale University Cardiovascular Imaging Center, New Haven CT, United States
| | - Francis G Spinale
- Cell Biology and Anatomy and Cardiovascular Research Center, University of South Carolina School of Medicine and the Columbia VA Health Care System, Columbia, SC, United States.
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Goto Y, Kato K, Yagi K, Kawaguchi Y, Yonezu H, Koshimae T, Waguri-Nagaya Y, Murakami H, Suzuki N. Transforming Growth Factor-β Induces Interleukin-6 Secretion from Human Ligamentum Flavum-Derived Cells through Partial Activation of p38 and p44/42 Mitogen-Activated Protein Kinases. Asian Spine J 2023; 17:997-1003. [PMID: 37946333 PMCID: PMC10764132 DOI: 10.31616/asj.2023.0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/03/2023] [Accepted: 04/23/2023] [Indexed: 11/12/2023] Open
Abstract
STUDY DESIGN This experimental study was performed using human ligamentum flavum-derived cells (HFCs). PURPOSE To investigate the intracellular signaling mechanism of interleukin-6 (IL-6) secretion in transforming growth factor-β (TGF- β)-stimulated HFCs. OVERVIEW OF LITERATURE Lumbar spinal stenosis (LSS) is a prevalent disease among the elderly, characterized by debilitating pain in the lower extremities. Although the number of patients with LSS has increased in recent years, the underlying pathomechanism remains unclear. Clinical examinations typically rely on magnetic resonance imaging to diagnose patients, revealing ligamentum flavum hypertrophy. Some studies have suggested an association between ligamentum flavum hypertrophy and inflammation/fibrosis, and expression of TGF-β and IL-6 has been observed in surgically obtained ligamentum flavum samples. However, direct evidence linking TGF-β and IL-6 expression in HFCs is lacking. METHODS HFCs were obtained from patients with LSS who had undergone decompression surgery. The cells were stimulated with TGF-β and pretreated with either the p38 mitogen-activated protein (MAP) kinase inhibitor SB203580 or the p44/42 MAP kinase inhibitor FR180204. IL-6 secretion in the cell culture medium and IL-6 messenger RNA (mRNA) expression levels were analyzed using an enzyme-linked immunoassay and real-time polymerase chain reaction, respectively. RESULTS TGF-β administration resulted in a dose- and time-dependent stimulation of IL-6 release. Treatment with SB203580 and FR180204 markedly suppressed TGF-β-induced IL-6 secretion from HFCs. Moreover, these inhibitors suppressed IL-6 mRNA expression in response to TGF-β stimulation. CONCLUSIONS Our findings indicate that TGF-β induces IL-6 protein secretion and gene expression in HFCs through the activation of p38 or p44/42 MAP kinases. These results suggest a potential association between IL-6-mediated inflammatory response and tissue hypertrophy in LSS, and we provide insights into molecular targets for therapeutic interventions targeting LSS-related inflammation through our analysis of the MAP kinase pathway using HFCs.
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Affiliation(s)
- Yuta Goto
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya,
Japan
| | - Kenji Kato
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya,
Japan
| | - Kiyoshi Yagi
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya,
Japan
| | - Yohei Kawaguchi
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya,
Japan
| | - Hiroki Yonezu
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya,
Japan
| | - Tomoko Koshimae
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya,
Japan
| | - Yuko Waguri-Nagaya
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya,
Japan
| | - Hideki Murakami
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya,
Japan
| | - Nobuyuki Suzuki
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya,
Japan
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Huang Q, Huang Q. Inhibition of lncRNA DANCR Prevents Heart Failure by Ameliorating Cardiac Hypertrophy and Fibrosis Via Regulation of the miR-758-3p/PRG4/Smad Axis. J Cardiovasc Transl Res 2023; 16:1357-1372. [PMID: 37656414 DOI: 10.1007/s12265-023-10428-z] [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: 06/15/2023] [Accepted: 08/14/2023] [Indexed: 09/02/2023]
Abstract
The current work was developed to explore the functions and possible mechanism of PRG4 in cardiac hypertrophy and heart failure. Ang II-stimulated H9c2 cells and AC16 cells were used as in vitro cell models. The binding relation between genes in cells was explored using luciferase reporter assays and RNA immunoprecipitation assay. The cardiac functions of rats received transverse-ascending aortic constriction (TAC) surgery and adeno-associated virus (AAV) injection were examined with echocardiography. The myocardial histological changes were observed using H&E, wheat germ agglutinin, and sirius red staining. It was discovered that PRG4 silencing attenuated cell hypertrophy and fibrosis and inactivated the Smad pathway under Ang II treatment. PRG4 was targeted by miR-758-3p, and miR-758-3p interacted with long noncoding RNA DANCR. DANCR silencing inhibited cardiac dysfunction, fibrosis, and TGFβ1/Smad pathway. In addition, DANCR was highly expressed in myocardial extracellular vesicles. Overall, DANCR depletion prevents heart failure by inhibiting cardiac hypertrophy and fibrosis via the miR-758-3p/PRG4/Smad pathway.
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Affiliation(s)
- Qianwen Huang
- Department of Cardiology, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, 362000, China
| | - Qian Huang
- Teaching and Research Section of Physiology, Basic Medicine Department, Quanzhou Medical College, No.2 Anji Road, Luojiang District, Quanzhou, 362000, Fujian, China.
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Dai H, Tao S, Guan Y, Zhang Y, Yang Z, Jia J, Zhang X, Zhang G. Astragalus (Astragalus mongholicus) Improves Ventricular Remodeling via ESR1 Downregulation RhoA/ROCK Pathway. Int Heart J 2023; 64:1148-1156. [PMID: 37967985 DOI: 10.1536/ihj.23-265] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Astragalus (Astragalus mongholicus) alleviates myocardial remodeling caused by hypertension. However, the detailed molecular mechanism is unclear. This study aims to investigate the effect of Astragalus on ventricular remodeling in ovariectomized spontaneous hypertensive rats (OVX-SHR).Female SHR/NCrl rats were subjected to bilateral ovariectomy to establish the OVX-SHR model and treated with Astragalus extract by gavage. The hemodynamics and cardiac function parameters were measured. HE and Masson staining were used to detect the pathological structure of myocardial remodeling and observe the hyperplasia of myocardial collagen fibers. The immunohistochemistry tested the level of α-SMA. The expression levels of inflammatory cytokines, IκB, p65, Cleaved-Caspase3, RhoA, and ROCK1/2 were detected using Western blot. The method of qRT-PCR measured the expression of matrix metalloproteinase (MMP-2 and MMP-9).Hemodynamic and cardiac function parameters were significantly improved after a high dose of Astragalus extract and Valsartan treatment. The myocardial integrity of the model group was significantly reduced, arranged loosely, and disordered, while the expression of α-SMA was increased. However, Astragalus extract and Valsartan treatments significantly reduced the pathological damage and α-SMA. The levels of TNF-α, IL-1β, IL-6, TGF-β, MMP-2, and MMP-9 in the model group were increased but decreased after Astragalus extract treatment. Adding an ESR1 inhibitor attenuated the improvement effect of Astragalus extract on myocardial remodeling and restored the expression of RhoA and ROCK1/2.Astragalus extract attenuates the cardiac damage in OVX-SHR by downregulating the RhoA/ROCK pathway through ESR1.
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Affiliation(s)
- Hualei Dai
- Department of Cardiology, The Affiliated Hospital of Yunnan University
- School of Medicine, Yunnan University
| | - Siming Tao
- Department of Cardiology, The Affiliated Hospital of Yunnan University
| | - Yingxia Guan
- Department of Cardiology, The Affiliated Hospital of Yunnan University
| | - Yijian Zhang
- Department of Cardiology, The Affiliated Hospital of Yunnan University
| | - Zhigang Yang
- Department of Cardiology, The Affiliated Hospital of Yunnan University
| | - Ji Jia
- Department of Cardiology, The Affiliated Hospital of Yunnan University
| | - Xinjin Zhang
- Department of Cardiology, The Affiliated Hospital of Yunnan University
| | - Guimin Zhang
- Department of Cardiovascular Surgery, The Affiliated Hospital of Yunnan University
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Cai Y, Tian J, Li J, Liu X, Li F, Zhang L, Xiao S, Jia C, Deng C. A novel combined technology for treating hypertrophic scars: adipose tissue extract combined with fractional CO 2 laser. Front Physiol 2023; 14:1284312. [PMID: 37965106 PMCID: PMC10642933 DOI: 10.3389/fphys.2023.1284312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 10/17/2023] [Indexed: 11/16/2023] Open
Abstract
Introduction: Owing to the need for liposuction and its unsuitability for allogeneic transplantation, the clinical application of stromal vascular fraction gel (SVF-gel) combined with fractional CO2 laser for scar treatment is limited. Adipose tissue extract (ATE), rich in cytokines and growth factors, offers a more convenient option for clinical practice as it can be easily prepared using purely physical methods and has low immunogenicity. We aimed to evaluate the effectiveness of ATE combined with fractional CO2 laser in the treatment of hypertrophic scars. Methods: ATE was prepared using discarded liposuction fluid from patients undergoing liposuction. A rabbit ear hypertrophic scar model was established and treated with ATE, fractional CO2 laser, or a combination. PBS was used as a control. The scar appearance and histological changes were observed. The immunohistochemistry method was used to evaluate the expression of α-SMA, while perilipin was detected using immunofluorescence. Additionally, the level of adipogenic signal C/EBPα and PPARγ mRNA was studied. Results: Following treatment, the volume of hypertrophic scar decreased, resulting in a softer texture and thinner dermis. Additionally, there was a decrease in the infiltration of inflammatory cells, and the collagen arrangement became looser and more regular, and the expression of α-SMA also decreased, with the combination of ATE and fractional laser showing the most significant improvement. Moreover, the combination group was found to promote subcutaneous fat regeneration and increase the expression of adipogenic signals C/EBPα and PPARγ. Conclusion: The combination of ATE and fractional CO2 laser treatment has been shown to inhibit the development of hypertrophic scars. This effect may be attributed to the enhancement of adipogenesis and decrease in collagen deposition.
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Affiliation(s)
- Yuan Cai
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Jiao Tian
- Department of Surgery, Zunyi Medical College, Zunyi, Guizhou, China
- Department of Clinical Medicine, Zunyi Medical College, Zunyi, Guizhou, China
| | - Jianyi Li
- Department of Burns and Plastic Surgery, Nanxishan Hospital of Guangxi Zhuang Autonomous Region, Guilin, Guangxi, China
| | - Xing Liu
- Department of Burns and Plastic Surgery, Afliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Fang Li
- Department of Dermatology, Guiyang First People’s Hospital, Guiyang, Guizhou, China
| | - Lanfang Zhang
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Shune Xiao
- Department of Burns and Plastic Surgery, Afliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Changsha Jia
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Chengliang Deng
- Department of Burns and Plastic Surgery, Afliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
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Zhang M, Yang Y, Zhu Z, Chen Z, Huang D. Implications of Activating the ANT2/mTOR/PGC-1α Feedback Loop: Insights into Mitochondria-Mediated Injury in Hypoxic Myocardial Cells. Curr Issues Mol Biol 2023; 45:8633-8651. [PMID: 37998720 PMCID: PMC10670450 DOI: 10.3390/cimb45110543] [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: 09/18/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 11/25/2023] Open
Abstract
Mitochondrial dysfunction is known to play a critical role in the development of cardiomyocyte death during acute myocardial infarction (AMI). However, the exact mechanisms underlying this dysfunction are still under investigation. Adenine nucleotide translocase 2 (ANT2) is a key functional protein in mitochondria. We aimed at exploring the potential benefits of ANT2 inhibition against AMI. We utilized an oxygen-glucose deprivation (OGD) cell model and an AMI mice model to detect cardiomyocyte injury. We observed elevated levels of reactive oxygen species (ROS), disrupted mitochondrial membrane potential (MMP), and increased apoptosis due to the overexpression of ANT2. Additionally, we discovered that ANT2 is involved in myocardial apoptosis by activating the mTOR (mechanistic target of rapamycin kinase)-dependent PGC-1α (PPARG coactivator 1 alpha) pathway, establishing a novel feedback loop during AMI. In our experiments with AC16 cells under OGD conditions, we observed protective effects when transfected with ANT2 siRNA and miR-1203. Importantly, the overexpression of ANT2 counteracted the protective effect resulting from miR-1203 upregulation in OGD-induced AC16 cells. All these results supported that the inhibition of ANT2 could alleviate myocardial cell injury under OGD conditions. Based on these findings, we propose that RNA interference (RNAi) technology, specifically miRNA and siRNA, holds therapeutic potential by activating the ANT2/mTOR/PGC-1α feedback loop. This activation could help mitigate mitochondria-mediated injury in the context of AMI. These insights may contribute to the development of future clinical strategies for AMI.
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Affiliation(s)
- Meng Zhang
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China;
| | - Yuanzhan Yang
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China; (Y.Y.); (Z.C.)
| | - Zhu Zhu
- NHC Key Laboratory of Medical Immunology, Peking University, Beijing 100191, China;
- Key Laboratory of Molecular Immunology, Chinese Academy of Medical Sciences, Beijing 100191, China
| | - Zixuan Chen
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China; (Y.Y.); (Z.C.)
| | - Dongyang Huang
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China;
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Xiong Z, An Q, Chen L, Xiang Y, Li L, Zheng Y. Cell or cell derivative-laden hydrogels for myocardial infarction therapy: from the perspective of cell types. J Mater Chem B 2023; 11:9867-9888. [PMID: 37751281 DOI: 10.1039/d3tb01411h] [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: 09/27/2023]
Abstract
Myocardial infarction (MI) is a global cardiovascular disease with high mortality and morbidity. To treat acute MI, various therapeutic approaches have been developed, including cells, extracellular vesicles, and biomimetic nanoparticles. However, the clinical application of these therapies is limited due to low cell viability, inadequate targetability, and rapid elimination from cardiac sites. Injectable hydrogels, with their three-dimensional porous structure, can maintain the biomechanical stabilization of hearts and the transplantation activity of cells. However, they cannot regenerate cardiomyocytes or repair broken hearts. A better understanding of the collaborative relationship between hydrogel delivery systems and cell or cell-inspired therapy will facilitate advancing innovative therapeutic strategies against MI. Following that, from the perspective of cell types, MI progression and recent studies on using hydrogel to deliver cell or cell-derived preparations for MI treatment are discussed. Finally, current challenges and future prospects of cell or cell derivative-laden hydrogels for MI therapy are proposed.
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Affiliation(s)
- Ziqing Xiong
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qi An
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Liqiang Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China.
| | - Yucheng Xiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China.
| | - Lian Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China.
| | - Yaxian Zheng
- Department of Pharmacy, Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, Sichuan, China.
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, China
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Yu X, Ma X, Zhou J. DNMT3A-mediated epigenetic silencing of SOX17 contributes to endothelial cell migration and fibroblast activation in wound healing. PLoS One 2023; 18:e0292684. [PMID: 37856473 PMCID: PMC10586696 DOI: 10.1371/journal.pone.0292684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 09/26/2023] [Indexed: 10/21/2023] Open
Abstract
BACKGROUND Wound healing, especially impaired chronic wound healing, poses a tremendous challenge for modern medicine. Understanding the molecular mechanisms underlying wound healing is essential to the development of novel therapeutic strategies. METHODS A wound-healing mouse model was established to analyze histopathological alterations during wound healing, and the expression of SRY-box transcription factor 17 (SOX17), DNA methyltransferase 3 alpha (DNMT3A), and a specific fibroblast marker S100 calcium-binding protein A4 (S100A4) in wound skin tissues was tested by immunofluorescence (IF) assay. Cell proliferation and migration were evaluated using 5-ethynyl-2'-deoxyuridine (EdU) and Transwell migration assays. RT-qPCR and western blotting were used to measure RNA and protein expression. Enzyme-linked immunosorbent assay (ELISA) was performed to detect the secretion of transforming growth factor-beta (TGF-β). Chromatin immunoprecipitation followed by qPCR (ChIP-qPCR) and DNA pull-down assays were performed to confirm the interaction between DNMT3A and the CpG island of the SOX17 promoter. Promoter methylation was examined by pyrosequencing. RESULTS SOX17 and DNMT3A expression were regularly regulated during the different phases of wound healing. SOX17 knockdown promoted HUVEC migration and the production and release of TGF-β. Through establishing an endothelial cells-fibroblasts co-culture model, we found that SOX17 knockdown in HUVECs activated HFF-1 fibroblasts, which expressed α-smooth muscle actin (α-SMA) and type I collagen (COL1). DNMT3A overexpression reduces SOX17 mRNA levels. ChIP-qPCR and DNA pull-down assays verified the interaction between DNMT3A and CpG island in the SOX17 promoter region. Pyrosequencing confirmed that DNMT3A overexpression increased the methylation level of the SOX17 promoter. CONCLUSION DNMT3A-mediated downregulation of SOX17 facilitates wound healing by promoting endothelial cell migration and fibroblast activation.
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Affiliation(s)
- Xiaoping Yu
- The Department of Burn, Gansu Provincial Hospital, Lanzhou, China
| | - Xiaoting Ma
- Gansu University of Chinese Medicine, Lanzhou, China
| | - Junli Zhou
- The Department of Burn, Gansu Provincial Hospital, Lanzhou, China
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41
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Chen W, Li C, Chen Y, Bin J, Chen Y. Cardiac cellular diversity and functionality in cardiac repair by single-cell transcriptomics. Front Cardiovasc Med 2023; 10:1237208. [PMID: 37920179 PMCID: PMC10619858 DOI: 10.3389/fcvm.2023.1237208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 10/02/2023] [Indexed: 11/04/2023] Open
Abstract
Cardiac repair after myocardial infarction (MI) is orchestrated by multiple intrinsic mechanisms in the heart. Identifying cardiac cell heterogeneity and its effect on processes that mediate the ischemic myocardium repair may be key to developing novel therapeutics for preventing heart failure. With the rapid advancement of single-cell transcriptomics, recent studies have uncovered novel cardiac cell populations, dynamics of cell type composition, and molecular signatures of MI-associated cells at the single-cell level. In this review, we summarized the main findings during cardiac repair by applying single-cell transcriptomics, including endogenous myocardial regeneration, myocardial fibrosis, angiogenesis, and the immune microenvironment. Finally, we also discussed the integrative analysis of spatial multi-omics transcriptomics and single-cell transcriptomics. This review provided a basis for future studies to further advance the mechanism and development of therapeutic approaches for cardiac repair.
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Affiliation(s)
- Wei 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
| | - 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
| | - Yijin 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
| | - 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
| | - 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
- Department of Cardiology, Ganzhou People’s Hospital, Ganzhou, China
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Korzeń D, Sierka O, Dąbek J. Transcriptional Activity of Metalloproteinase 9 (MMP-9) and Tissue Metalloproteinase 1 (TIMP-1) Genes as a Diagnostic and Prognostic Marker of Heart Failure Due to Ischemic Heart Disease. Biomedicines 2023; 11:2776. [PMID: 37893149 PMCID: PMC10604598 DOI: 10.3390/biomedicines11102776] [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: 09/07/2023] [Revised: 10/03/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
The most common cause of heart failure (HF) is coronary artery disease (CAD). The aim of this study was to evaluate the transcriptional activity of the metalloproteinase 9 (MMP-9) and tissue metalloproteinase inhibitor 1 (TIMP-1) genes in a study group of patients with HF due to CAD and in the control group, as well as assess the transcriptional activity of the examined genes, taking into account the number of affected coronary arteries and the severity of heart failure. The study group consisted of a total of 150 (100%) patients. The material for the study was peripheral blood, and molecular tests were performed using the quantitative QRT-PCR technique. The transcriptional activity of the MMP-9 gene was significantly higher in the group of patients with CAD and HF. It was also significantly higher with the progression of heart failure. TIMP-1 gene transcriptional activity was significantly lower with the advancement of heart failure. The transcriptional activity of the MMP-9 and TIMP-1 genes differentiated the examined patients. The severity of HF, and a significant increase in the QRT-PCR transcriptional activity of the MMP-9 gene with a simultaneous decrease in the activity of the TIMP-1 gene, makes them useful diagnostic and prognostic markers in clinical practice.
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Affiliation(s)
- Dariusz Korzeń
- Provincial Specialist Hospital Megrez Sp. z o. o., Edukacji Street 102, 43-100 Tychy, Poland
| | - Oskar Sierka
- Student Research Group at the Department of Cardiology, Department of Cardiology, Faculty of Health Sciences in Katowice, Medical University of Silesia in Katowice, Ziołowa Street 45/47, 40-635 Katowice, Poland
| | - Józefa Dąbek
- Department of Cardiology, Faculty of Health Sciences in Katowice, Medical University of Silesia in Katowice, Ziołowa Street 45/47, 40-635 Katowice, Poland
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Miquelestorena-Standley E, da Silva AVV, Monnier M, Chadet S, Piollet M, Héraud A, Lemoine R, Bochaton T, Derumeaux G, Roger S, Ivanes F, Angoulvant D. Human peripheral blood mononuclear cells display a temporal evolving inflammatory profile after myocardial infarction and modify myocardial fibroblasts phenotype. Sci Rep 2023; 13:16745. [PMID: 37798364 PMCID: PMC10556078 DOI: 10.1038/s41598-023-44036-3] [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: 06/03/2023] [Accepted: 10/03/2023] [Indexed: 10/07/2023] Open
Abstract
Pathophysiological response after acute myocardial infarction (AMI) is described as a three-stage model involving temporal phenotypic modifications of both immune cells and fibroblasts: a primary inflammatory phase, followed by a reparative phase and a fibrous scar maturation phase. Purinergic receptors, particularly the P2Y11 receptor, have been reported to be involved in the regulation of inflammation after ischemia and could act for the resolution of inflammation after AMI. For the first time, we characterized the immuno-inflammatory and P2Y11 expression profiles of peripheral blood mononuclear cells (PBMC) from AMI patients and analyzed the consequences of presenting these cells to cardiac fibroblasts in vitro. PBMC from 178 patients were collected at various times after reperfused ST-segment elevation AMI, from H0 to M12. Expression level of P2RY11 and genes involved in tolerogenic profile of dendritic cells and T cell polarization were evaluated by RT-PCR. P2Y11 protein expression was assessed by flow cytometry. PBMC and human cardiac fibroblasts (HCF) were cocultured and α-SMA/vimentin ratio was analyzed by flow cytometry. Within the first 48 h after AMI, expression levels of HMOX1, STAT3 and CD4 increased while IDO1 and TBX21/GATA3 ratio decreased. Concomitantly, the expression of P2RY11 increased in both T and B cells. In vitro, PBMC collected at H48 after AMI induced an increase in α-SMA/vimentin ratio in HCF. Our results suggest that human PBMC display an evolving inflammatory profile with reparative characteristics the first two days after AMI and secrete soluble mediators leading to the fibroblastic proteins modification, thus participating to myocardial fibrosis.
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Affiliation(s)
- Elodie Miquelestorena-Standley
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France.
- Service d'Anatomie et Cytologie Pathologiques, CHRU de Tours, Tours, France.
| | - Ana Valéria Vinhais da Silva
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
| | - Marina Monnier
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
| | - Stéphanie Chadet
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
| | - Marie Piollet
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
| | - Audrey Héraud
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
| | - Roxane Lemoine
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
| | - Thomas Bochaton
- Service de Cardiologie, Hospices Civils de Lyon, Lyon, France
| | - Geneviève Derumeaux
- Service de Physiologie, Hôpital Henri Mondor, AP-HP, Université Paris-Est Créteil, INSERM U955, Créteil, France
| | - Sébastien Roger
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
| | - Fabrice Ivanes
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
- Service de Cardiologie, CHRU de Tours, Tours, France
| | - Denis Angoulvant
- EA 4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine, Université de Tours, 10 boulevard tonnele, 37032, Tours Cedex 1, France
- Service de Cardiologie, CHRU de Tours, Tours, France
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Salminen A. The role of immunosuppressive myofibroblasts in the aging process and age-related diseases. J Mol Med (Berl) 2023; 101:1169-1189. [PMID: 37606688 PMCID: PMC10560181 DOI: 10.1007/s00109-023-02360-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/09/2023] [Accepted: 08/14/2023] [Indexed: 08/23/2023]
Abstract
Tissue-resident fibroblasts are mesenchymal cells which control the structural integrity of the extracellular matrix (ECM). Fibroblasts possess a remarkable plasticity to allow them to adapt to the changes in the microenvironment and thus maintain tissue homeostasis. Several stresses, also those associated with the aging process, convert quiescent fibroblasts into myofibroblasts which not only display fibrogenic properties but also act as immune regulators cooperating both with tissue-resident immune cells and those immune cells recruited into affected tissues. TGF-β cytokine and reactive oxygen species (ROS) are major inducers of myofibroblast differentiation in pathological conditions either from quiescent fibroblasts or via transdifferentiation from certain other cell types, e.g., macrophages, adipocytes, pericytes, and endothelial cells. Intriguingly, TGF-β and ROS are also important signaling mediators between immunosuppressive cells, such as MDSCs, Tregs, and M2 macrophages. It seems that in pathological states, myofibroblasts are able to interact with the immunosuppressive network. There is clear evidence that a low-grade chronic inflammatory state in aging tissues is counteracted by activation of compensatory immunosuppression. Interestingly, common enhancers of the aging process, such as oxidative stress, loss of DNA integrity, and inflammatory insults, are inducers of myofibroblasts, whereas anti-aging treatments with metformin and rapamycin suppress the differentiation of myofibroblasts and thus prevent age-related tissue fibrosis. I will examine the reciprocal interactions between myofibroblasts and immunosuppressive cells within aging tissues. It seems that the differentiation of myofibroblasts with age-related harmful stresses enhances the activity of the immunosuppressive network which promotes tissue fibrosis and degeneration in elderly individuals.
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Affiliation(s)
- Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland.
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Ravassa S, López B, Treibel TA, San José G, Losada-Fuentenebro B, Tapia L, Bayés-Genís A, Díez J, González A. Cardiac Fibrosis in heart failure: Focus on non-invasive diagnosis and emerging therapeutic strategies. Mol Aspects Med 2023; 93:101194. [PMID: 37384998 DOI: 10.1016/j.mam.2023.101194] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/09/2023] [Accepted: 06/14/2023] [Indexed: 07/01/2023]
Abstract
Heart failure is a leading cause of mortality and hospitalization worldwide. Cardiac fibrosis, resulting from the excessive deposition of collagen fibers, is a common feature across the spectrum of conditions converging in heart failure. Eventually, either reparative or reactive in nature, in the long-term cardiac fibrosis contributes to heart failure development and progression and is associated with poor clinical outcomes. Despite this, specific cardiac antifibrotic therapies are lacking, making cardiac fibrosis an urgent unmet medical need. In this context, a better patient phenotyping is needed to characterize the heterogenous features of cardiac fibrosis to advance toward its personalized management. In this review, we will describe the different phenotypes associated with cardiac fibrosis in heart failure and we will focus on the potential usefulness of imaging techniques and circulating biomarkers for the non-invasive characterization and phenotyping of this condition and for tracking its clinical impact. We will also recapitulate the cardiac antifibrotic effects of existing heart failure and non-heart failure drugs and we will discuss potential strategies under preclinical development targeting the activation of cardiac fibroblasts at different levels, as well as targeting additional extracardiac processes.
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Affiliation(s)
- Susana Ravassa
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Begoña López
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Thomas A Treibel
- Institute of Cardiovascular Science, University College London, UK; Barts Heart Centre, St Bartholomew's Hospital, London, UK
| | - Gorka San José
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Blanca Losada-Fuentenebro
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Leire Tapia
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Antoni Bayés-Genís
- CIBERCV, Carlos III Institute of Health, Madrid, Spain; Servei de Cardiologia i Unitat d'Insuficiència Cardíaca, Hospital Universitari Germans Trias i Pujol, Badalona, Spain; Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain; ICREC Research Program, Germans Trias i Pujol Health Science Research Institute, Badalona, Spain
| | - Javier Díez
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain.
| | - Arantxa González
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain.
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Ezzo M, Hinz B. Novel approaches to target fibroblast mechanotransduction in fibroproliferative diseases. Pharmacol Ther 2023; 250:108528. [PMID: 37708995 DOI: 10.1016/j.pharmthera.2023.108528] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/09/2023] [Accepted: 09/07/2023] [Indexed: 09/16/2023]
Abstract
The ability of cells to sense and respond to changes in mechanical environment is vital in conditions of organ injury when the architecture of normal tissues is disturbed or lost. Among the various cellular players that respond to injury, fibroblasts take center stage in re-establishing tissue integrity by secreting and organizing extracellular matrix into stabilizing scar tissue. Activation, activity, survival, and death of scar-forming fibroblasts are tightly controlled by mechanical environment and proper mechanotransduction ensures that fibroblast activities cease after completion of the tissue repair process. Conversely, dysregulated mechanotransduction often results in fibroblast over-activation or persistence beyond the state of normal repair. The resulting pathological accumulation of extracellular matrix is called fibrosis, a condition that has been associated with over 40% of all deaths in the industrialized countries. Consequently, elements in fibroblast mechanotransduction are scrutinized for their suitability as anti-fibrotic therapeutic targets. We review the current knowledge on mechanically relevant factors in the fibroblast extracellular environment, cell-matrix and cell-cell adhesion structures, stretch-activated membrane channels, stress-regulated cytoskeletal structures, and co-transcription factors. We critically discuss the targetability of these elements in therapeutic approaches and their progress in pre-clinical and/or clinical trials to treat organ fibrosis.
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Affiliation(s)
- Maya Ezzo
- Keenan Research Institute for Biomedical Science of the St. Michael's Hospital, and Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Boris Hinz
- Keenan Research Institute for Biomedical Science of the St. Michael's Hospital, and Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.
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Burgon PG, Weldrick JJ, Talab OMSA, Nadeer M, Nomikos M, Megeney LA. Regulatory Mechanisms That Guide the Fetal to Postnatal Transition of Cardiomyocytes. Cells 2023; 12:2324. [PMID: 37759546 PMCID: PMC10528641 DOI: 10.3390/cells12182324] [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: 07/29/2023] [Revised: 09/16/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
Heart disease remains a global leading cause of death and disability, necessitating a comprehensive understanding of the heart's development, repair, and dysfunction. This review surveys recent discoveries that explore the developmental transition of proliferative fetal cardiomyocytes into hypertrophic postnatal cardiomyocytes, a process yet to be well-defined. This transition is key to the heart's growth and has promising therapeutic potential, particularly for congenital or acquired heart damage, such as myocardial infarctions. Although significant progress has been made, much work is needed to unravel the complex interplay of signaling pathways that regulate cardiomyocyte proliferation and hypertrophy. This review provides a detailed perspective for future research directions aimed at the potential therapeutic harnessing of the perinatal heart transitions.
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Affiliation(s)
- Patrick G. Burgon
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha P.O. Box 2713, Qatar
| | - Jonathan J. Weldrick
- Department of Medicine, Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (J.J.W.); (L.A.M.)
| | | | - Muhammad Nadeer
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (O.M.S.A.T.)
| | - Michail Nomikos
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (O.M.S.A.T.)
| | - Lynn A. Megeney
- Department of Medicine, Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (J.J.W.); (L.A.M.)
- Sprott Centre for Stem Cell Research, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
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48
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Learmonth M, Corker A, Dasgupta S, DeLeon-Pennell KY. Regulation of cardiac fibroblasts by lymphocytes after a myocardial infarction: playing in the major league. Am J Physiol Heart Circ Physiol 2023; 325:H553-H561. [PMID: 37450290 PMCID: PMC10538980 DOI: 10.1152/ajpheart.00250.2023] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
Cardiac fibrosis is a pathological condition characterized by excessive accumulation of extracellular matrix components within the myocardium, which can lead to impaired cardiac function and heart failure. Studies have shown that lymphocytes including B and T cells play important roles in the development and progression of cardiac fibrosis after a myocardial infarction. In this review, we focus on the regulation of cardiac fibrosis by lymphocyte subsets, with a particular emphasis on CD4+ and CD8+ T cells and their effects on fibroblasts and cardiac remodeling. We also highlight areas for further exploration of the interactions between T cells and fibroblasts necessary for understanding and treating cardiac fibrosis and heart failure.
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Affiliation(s)
- Maya Learmonth
- College of Graduate Studies, Medical University of South Carolina, Charleston, South Carolina, United States
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Alexa Corker
- College of Graduate Studies, Medical University of South Carolina, Charleston, South Carolina, United States
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Shaoni Dasgupta
- College of Graduate Studies, Medical University of South Carolina, Charleston, South Carolina, United States
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Kristine Y DeLeon-Pennell
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
- Research Service, Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States
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Hertig V, Villeneuve L, Calderone A. Nestin identifies a subpopulation of rat ventricular fibroblasts and participates in cell migration. Am J Physiol Cell Physiol 2023; 325:C496-C508. [PMID: 37458435 DOI: 10.1152/ajpcell.00161.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/03/2023] [Accepted: 07/03/2023] [Indexed: 08/08/2023]
Abstract
Fibroblast progenitor cells migrate to the endocardial region during cardiogenesis, and the migration of ventricular fibroblasts to the ischemically damaged region of the infarcted adult heart is a seminal event of reparative fibrosis. The intermediate filament protein nestin is implicated in cell migration and expression identified in a subpopulation of scar-derived myofibroblasts. The present study tested the hypothesis that fibroblast progenitor cells express nestin, and the intermediate filament protein drives the migratory phenotype of ventricular fibroblasts. Transcription factor 21 (Tcf21)- and Wilms tumor 1 (WT1)-fibroblast progenitor cells identified in the epicardial/endocardial regions of the E12.5- to E13.5-day embryonic mouse heart predominantly expressed nestin. Nuclear Tcf21/WT1 staining was identified in neonatal rat ventricular fibroblasts (NNVFbs), and a subpopulation coexpressed nestin. Nuclear Tcf21/WT1 expression persisted in adult rat ventricular fibroblasts, whereas nestin protein levels were downregulated. Nestin-expressing NNVFbs exhibited a unique phenotype as the subpopulation was refractory to cell cycle reentry in response to selective stimuli. Nestin(-)- and nestin(+)-scar-derived rat myofibroblasts plated in Matrigel unmasked a migratory phenotype characterized by the de novo formation of lumen-like structures. The elongated membrane projections emanating from scar myofibroblasts delineating the boundary of lumen-like structures expressed nestin. Lentiviral short-hairpin RNA (shRNA)-mediated nestin depletion inhibited the in vitro migratory response of NNVFbs as the wound radius was significantly larger compared with NNVFbs infected with the empty lentivirus. Thus, nestin represents a marker of embryonic Tcf21/WT1(+)-fibroblast progenitor cells. The neonatal rat heart contains a distinct subpopulation of nestin-immunoreactive Tcf21/WT1(+) fibroblasts refractory to cell cycle reentry, and the intermediate filament protein may preferentially facilitate ventricular fibroblast migration during physiological/pathological remodeling.NEW & NOTEWORTHY Tcf21/WT1(+)-fibroblast progenitor cells of the embryonic mouse heart predominantly express the intermediate filament protein nestin. A subpopulation of Tcf21/WT1(+)-neonatal rat ventricular fibroblasts express nestin and are refractory to selective stimuli influencing cell cycle reentry. Scar-derived myofibroblasts plated in Matrigel elicit the formation of lumen-like structures characterized by the appearance of nestin(+)-membrane projections. Lentiviral shRNA-mediated nestin depletion in a subpopulation of neonatal rat ventricular fibroblasts suppressed the migratory response following the in vitro scratch assay.
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Affiliation(s)
- Vanessa Hertig
- Research Center, Montreal Heart Institute, Montréal, Québec, Canada
| | - Louis Villeneuve
- Research Center, Montreal Heart Institute, Montréal, Québec, Canada
| | - Angelino Calderone
- Research Center, Montreal Heart Institute, Montréal, Québec, Canada
- Département de Pharmacologie et Physiologie, Université de Montréal, Montréal, Québec, Canada
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50
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Salminen A. The plasticity of fibroblasts: A forgotten player in the aging process. Ageing Res Rev 2023; 89:101995. [PMID: 37391015 DOI: 10.1016/j.arr.2023.101995] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/15/2023] [Accepted: 06/26/2023] [Indexed: 07/02/2023]
Abstract
Tissue-resident fibroblasts are mesenchymal cells which possess an impressive plasticity in their ability to modify their properties according to the requirements of the microenvironment. There are diverse subgroups of fibroblast phenotypes associated with different tissue pathological conditions, e.g., cancers, wound healing, and many fibrotic and inflammatory conditions. The heterogeneous phenotypes can be subdivided into fibrogenic and non-fibrogenic, inflammatory and immunosuppressive subtypes as well as cellular senescent subsets. A major hallmark of activated fibroblasts is that they contain different amounts of stress fibers combined with α-smooth muscle actin (α-SMA) protein, i.e., commonly this phenotype has been called the myofibroblast. Interestingly, several stresses associated with the aging process are potent inducers of myofibroblast differentiation, e.g., oxidative and endoplasmic reticulum stresses, extracellular matrix (ECM) disorders, inflammatory mediators, and telomere shortening. Accordingly, anti-aging treatments with metformin and rapamycin inhibited the differentiation of myofibroblasts in tissues. There is evidence that the senescent phenotype induced in cultured fibroblasts does not represent the phenotype of fibroblasts in aged tissues. Considering the versatile plasticity of fibroblasts as well as their frequency and structural importance in tissues, it does seem that fibroblasts are overlooked players in the aging process.
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Affiliation(s)
- Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland.
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