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Yu Y, Cai Y, Yang F, Yang Y, Cui Z, Shi D, Bai R. Vascular smooth muscle cell phenotypic switching in atherosclerosis. Heliyon 2024; 10:e37727. [PMID: 39309965 PMCID: PMC11416558 DOI: 10.1016/j.heliyon.2024.e37727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 08/25/2024] [Accepted: 09/09/2024] [Indexed: 09/25/2024] Open
Abstract
Atherosclerosis (AS) is a complex pathology process involving intricate interactions among various cells and biological processes. Vascular smooth muscle cells (VSMCs) are the predominant cell type in normal arteries, and under atherosclerotic stimuli, VSMCs respond to altered blood flow and microenvironment changes by downregulating contractile markers and switching their phenotype. This review overviews the diverse phenotypes of VSMCs, including the canonical contractile VSMCs, synthetic VSMCs, and phenotypes resembling macrophages, foam cells, myofibroblasts, osteoblasts/chondrocytes, and mesenchymal stem cells. We summarize their presumed protective and pro-atherosclerotic roles in AS development. Additionally, we underscore the molecular mechanisms and regulatory pathways governing VSMC phenotypic switching, encompassing transcriptional regulation, biochemical factors, plaque microenvironment, epigenetics, miRNAs, and the cytoskeleton, emphasizing their significance in AS development. Finally, we outline probable future research directions targeting VSMCs, offering insights into potential therapeutic strategies for AS management.
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Affiliation(s)
- Yanqiao Yu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yajie Cai
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
| | - Furong Yang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
| | - Yankai Yang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Zhuorui Cui
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Dazhuo Shi
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
| | - Ruina Bai
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
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Featherby SJ, Ettelaie C. Endothelial-derived microvesicles promote pro-migratory cross-talk with smooth muscle cells by a mechanism requiring tissue factor and PAR2 activation. Front Cardiovasc Med 2024; 11:1365008. [PMID: 38966751 PMCID: PMC11222581 DOI: 10.3389/fcvm.2024.1365008] [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: 01/03/2024] [Accepted: 05/31/2024] [Indexed: 07/06/2024] Open
Abstract
Introduction Microvesicles (MV) released by endothelial cells (EC) following injury or inflammation contain tissue factor (TF) and mediate communication with the underlying smooth muscle cells (SMC). Ser253-phosphorylated TF co-localizes with filamin A at the leading edge of migrating SMC. In this study, the influence of endothelial-derived TF-MV, on human coronary artery SMC (HCASMC) migration was examined. Methods and Results MV derived from human coronary artery EC (HCAEC) expressing TFWt accelerated HCASMC migration, but was lower with cytoplasmic domain-deleted TF. Furthermore, incubation with TFAsp253-MV, or expression of TFAsp253 in HCASMC, reduced cell migration. Blocking TF-factor VIIa (TF-fVIIa) procoagulant/protease activity, or inhibiting PAR2 signaling on HCASMC, abolished the accelerated migration. Incubation with fVIIa alone increased HCASMC migration, but was significantly enhanced on supplementation with TF. Neither recombinant TF alone, factor Xa, nor PAR2-activating peptide (SLIGKV) influenced cell migration. In other experiments, HCASMC were transfected with peptides corresponding to the cytoplasmic domain of TF prior to stimulation with TF-fVIIa. Cell migration was suppressed only when the peptides were phosphorylated at position of Ser253. Expression of mutant forms of filamin A in HCASMC indicated that the enhancement of migration by TF but not by PDGF-BB, was dependent on the presence of repeat-24 within filamin A. Incubation of HCASMC with TFWt-MV significantly reduced the levels of Smoothelin-B protein, and upregulated FAK expression. Discussion In conclusion, Ser253-phosphorylated TF and fVIIa released as MV-cargo by EC, act in conjunction with PAR2 on SMC to promote migration and may be crucial for normal arterial homeostasis as well as, during development of vascular disease.
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Boivin-Proulx LA, Haddad K, Lombardi M, Chong AY, Escaned J, Mukherjee S, Forcillo J, Potter BJ, Coutinho T, Pacheco C. Pathophysiology of Myocardial Infarction With Nonobstructive Coronary Artery Disease: A Contemporary Systematic Review. CJC Open 2024; 6:380-390. [PMID: 38487045 PMCID: PMC10935701 DOI: 10.1016/j.cjco.2023.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 11/14/2023] [Indexed: 03/17/2024] Open
Abstract
Background Myocardial infarction with nonobstructive coronary artery disease (MINOCA) is defined as acute myocardial infarction (AMI) with angiographically nonobstructive coronary artery disease. MINOCA represents 6% of all AMI cases and is associated with increased mortality and morbidity. However, the wide array of pathophysiological factors and causes associated with MINOCA presents a diagnostic conundrum. Therefore, we conducted a contemporary systematic review of the pathophysiology of MINOCA. Methods A comprehensive systematic review of MINOCA was carried out through the utilization of the PubMed database. All systematic reviews, meta-analyses, randomized controlled trials, and cohort studies available in English or French that reported on the pathophysiology of MINOCA published after January 1, 2013 were retained. Results Of the 600 identified records, 80 records were retained. Central to the concept of MINOCA is the definition of AMI, characterized by the presence of myocardial damage reflected by elevated cardiac biomarkers in the setting of acute myocardial ischemia. As a result, a structured approach should be adopted to thoroughly assess and address clinically overlooked obstructive coronary artery disease, and cardiac and extracardiac mechanisms of myocyte injury. Once these options have been ruled out, a diagnosis of MINOCA can be established, and the appropriate multimodal assessment can be conducted to determine its specific underlying cause (plaque disruption, epicardial coronary vasospasm, coronary microvascular dysfunction, and coronary embolism and/or spontaneous coronary dissection or supply-demand mismatch). Conclusions Integrating a suitable definition of AMI and understanding the pathophysiological mechanisms of MINOCA are crucial to ensure an effective multimodal diagnostic evaluation and the provision of adequate tailored therapies.
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Affiliation(s)
- Laurie-Anne Boivin-Proulx
- Division of Cardiology, Interventional Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Kevin Haddad
- Centre Hospitalier de l’Université de Montréal (CHUM), Montréal, Quebec, Canada
| | - Marco Lombardi
- Hospital Clínico San Carlos IDISSC, Complutense University of Madrid, Madrid, Spain
- Department of Internal Medicine, University of Genova, Genova, Italy
| | - Aun Yeong Chong
- Division of Cardiology, Interventional Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Javier Escaned
- Hospital Clínico San Carlos IDISSC, Complutense University of Madrid, Madrid, Spain
| | - Swati Mukherjee
- Department of Cardiology, Cabrini Health, Malvern, Victoria, New South Wales, Australia
| | - Jessica Forcillo
- Centre Hospitalier de l’Université de Montréal (CHUM), Montréal, Quebec, Canada
- Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, Quebec, Canada
| | - Brian J. Potter
- Centre Hospitalier de l’Université de Montréal (CHUM), Montréal, Quebec, Canada
- Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, Quebec, Canada
| | | | - Christine Pacheco
- Centre Hospitalier de l’Université de Montréal (CHUM), Montréal, Quebec, Canada
- Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, Quebec, Canada
- Hôpital Pierre-Boucher, Longueuil, Quebec, Canada
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4
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Seppelt C, Abdelwahed YS, Meteva D, Nelles G, Stähli BE, Erbay A, Kränkel N, Sieronski L, Skurk C, Haghikia A, Sinning D, Dreger H, Knebel F, Trippel TD, Krisper M, Gerhardt T, Rai H, Klotsche J, Joner M, Landmesser U, Leistner DM. Coronary microevaginations characterize culprit plaques and their inflammatory microenvironment in a subtype of acute coronary syndrome with intact fibrous cap: results from the prospective translational OPTICO-ACS study. Eur Heart J Cardiovasc Imaging 2024; 25:175-184. [PMID: 37395586 DOI: 10.1093/ehjci/jead154] [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] [Received: 01/31/2023] [Revised: 05/21/2023] [Accepted: 06/20/2023] [Indexed: 07/04/2023] Open
Abstract
AIMS Coronary microevaginations (CMEs) represent an outward bulge of coronary plaques and have been introduced as a sign of adverse vascular remodelling following coronary device implantation. However, their role in atherosclerosis and plaque destabilization in the absence of coronary intervention is unknown. This study aimed to investigate CME as a novel feature of plaque vulnerability and to characterize its associated inflammatory cell-vessel-wall interactions. METHODS AND RESULTS A total of 557 patients from the translational OPTICO-ACS study programme underwent optical coherence tomography imaging of the culprit vessel and simultaneous immunophenotyping of the culprit lesion (CL). Two hundred and fifty-eight CLs had a ruptured fibrous cap (RFC) and one hundred had intact fibrous cap (IFC) acute coronary syndrome (ACS) as an underlying pathophysiology. CMEs were significantly more frequent in CL when compared with non-CL (25 vs. 4%, P < 0.001) and were more frequently observed in lesions with IFC-ACS when compared with RFC-ACS (55.0 vs. 12.7%, P < 0.001). CMEs were particularly prevalent in IFC-ACS-causing CLs independent of a coronary bifurcation (IFC-ICB) when compared with IFC-ACS with an association to a coronary bifurcation (IFC-ACB, 65.4 vs. 43.7%, P = 0.030). CME emerged as the strongest independent predictor of IFC-ICB (relative risk 3.36, 95% confidence interval 1.67-6.76, P = 0.001) by multivariable regression analysis. IFC-ICB demonstrated an enrichment of monocytes in both culprit blood analysis (culprit ratio: 1.1 ± 0.2 vs. 0.9 ± 0.2, P = 0.048) and aspirated culprit thrombi (326 ± 162 vs. 96 ± 87 cells/mm2, P = 0.017), while IFC-ACB confirmed the accumulation of CD4+ T cells, as recently described. CONCLUSION This study provides novel evidence for a pathophysiological involvement of CME in the development of IFC-ACS and provides first evidence for a distinct pathophysiological pathway for IFC-ICB, driven by CME-derived flow disturbances and inflammatory activation involving the innate immune system. TRIAL REGISTRATION Registration of the study at clinicalTrials.gov (NCT03129503).
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Affiliation(s)
- Claudio Seppelt
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
| | - Youssef S Abdelwahed
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
| | - Denitsa Meteva
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
| | - Gregor Nelles
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
| | - Barbara E Stähli
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
| | - Aslihan Erbay
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
| | - Nicolle Kränkel
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
| | - Lara Sieronski
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
| | - Carsten Skurk
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
| | - Arash Haghikia
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
- Berlin Institute of Health (BIH), 10117 Berlin, Germany
| | - David Sinning
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
| | - Henryk Dreger
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
- Department of Cardiology Campus Charité Mitte, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Fabian Knebel
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
- Department of Cardiology Campus Charité Mitte, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Department of Cardiology, Sana Klinikum Lichtenberg, Berlin, Germany
| | - Tobias D Trippel
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Berlin 13353, Germany
| | - Maximilian Krisper
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Berlin 13353, Germany
| | - Teresa Gerhardt
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
- Berlin Institute of Health (BIH), 10117 Berlin, Germany
| | - Himanshu Rai
- Department of Cardiology and ISAR Research Centre, German Heart Centre, Technical University Munich, Munich 80636, Germany
- Cardiovascular Research Institute Dublin, Imaging Core Lab, Mater Private Network, Dublin D07 YH66, Ireland
- School of Pharmacy and Biomolecular Sciences, RCSI University of Medicine and Health Sciences, Dublin D02 YN77, Ireland
| | - Jens Klotsche
- German Rheumatism Research Centre Berlin, and Institute for Social Medicine, Epidemiology and Health Economics, Charité University Medicine Berlin, Charité Mitte, Berlin 10117, Germany
| | - Michael Joner
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
- Department of Cardiology and ISAR Research Centre, German Heart Centre, Technical University Munich, Munich 80636, Germany
| | - Ulf Landmesser
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
- Berlin Institute of Health (BIH), 10117 Berlin, Germany
| | - David M Leistner
- Department of Cardiology, University Heart Centre Berlin and Charité University Medicine Berlin, Campus Benjamin-Franklin (CBF), Berlin 12203, Germany
- DZHK (German Centre for Cardiovascular Research) Partner Site Berlin, Berlin, Germany
- Berlin Institute of Health (BIH), 10117 Berlin, Germany
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5
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Molnár AÁ, Pásztor DT, Tarcza Z, Merkely B. Cells in Atherosclerosis: Focus on Cellular Senescence from Basic Science to Clinical Practice. Int J Mol Sci 2023; 24:17129. [PMID: 38138958 PMCID: PMC10743093 DOI: 10.3390/ijms242417129] [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: 10/27/2023] [Revised: 11/30/2023] [Accepted: 12/03/2023] [Indexed: 12/24/2023] Open
Abstract
Aging is a major risk factor of atherosclerosis through different complex pathways including replicative cellular senescence and age-related clonal hematopoiesis. In addition to aging, extracellular stress factors, such as mechanical and oxidative stress, can induce cellular senescence, defined as premature cellular senescence. Senescent cells can accumulate within atherosclerotic plaques over time and contribute to plaque instability. This review summarizes the role of cellular senescence in the complex pathophysiology of atherosclerosis and highlights the most important senotherapeutics tested in cardiovascular studies targeting senescence. Continued bench-to-bedside research in cellular senescence might allow the future implementation of new effective anti-atherosclerotic preventive and treatment strategies in clinical practice.
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Affiliation(s)
- Andrea Ágnes Molnár
- Heart and Vascular Center, Semmelweis University, 1122 Budapest, Hungary; (D.T.P.); (Z.T.); (B.M.)
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6
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Abstract
The medial layer of the arterial wall is composed mainly of vascular smooth muscle cells (VSMCs). Under physiological conditions, VSMCs assume a contractile phenotype, and their primary function is to regulate vascular tone. In contrast with terminally differentiated cells, VSMCs possess phenotypic plasticity, capable of transitioning into other cellular phenotypes in response to changes in the vascular environment. Recent research has shown that VSMC phenotypic switching participates in the pathogenesis of atherosclerosis, where the various types of dedifferentiated VSMCs accumulate in the atherosclerotic lesion and participate in the associated vascular remodeling by secreting extracellular matrix proteins and proteases. This review article discusses the 9 VSMC phenotypes that have been reported in atherosclerotic lesions and classifies them into differentiated VSMCs, intermediately dedifferentiated VSMCs, and dedifferentiated VSMCs. It also provides an overview of several methodologies that have been developed for studying VSMC phenotypic switching and discusses their respective advantages and limitations.
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Affiliation(s)
- Runji Chen
- Shantou University Medical CollegeShantouChina
| | - David G. McVey
- Department of Cardiovascular SciencesUniversity of LeicesterLeicesterUnited Kingdom
| | - Daifei Shen
- Research Center for Translational MedicineThe Second Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | | | - Shu Ye
- Shantou University Medical CollegeShantouChina
- Department of Cardiovascular SciencesUniversity of LeicesterLeicesterUnited Kingdom
- Cardiovascular‐Metabolic Disease Translational Research ProgrammeNational University of SingaporeSingapore
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7
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Spasovski V, Andjelkovic M, Parezanovic M, Komazec J, Ugrin M, Klaassen K, Stojiljkovic M. The Role of Autophagy and Apoptosis in Affected Skin and Lungs in Patients with Systemic Sclerosis. Int J Mol Sci 2023; 24:11212. [PMID: 37446389 DOI: 10.3390/ijms241311212] [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: 05/25/2023] [Revised: 06/29/2023] [Accepted: 07/01/2023] [Indexed: 07/15/2023] Open
Abstract
Systemic sclerosis (SSc) is a complex autoimmune inflammatory disorder with multiple organ involvement. Skin changes present the hallmark of SSc and coincide with poor prognosis. Interstitial lung diseases (ILD) are the most widely reported complications in SSc patients and the primary cause of death. It has been proposed that the processes of autophagy and apoptosis could play a significant role in the pathogenesis and clinical course of different autoimmune diseases, and accordingly in SSc. In this manuscript, we review the current knowledge of autophagy and apoptosis processes in the skin and lungs of patients with SSc. Profiling of markers involved in these processes in skin cells can be useful to recognize the stage of fibrosis and can be used in the clinical stratification of patients. Furthermore, the knowledge of the molecular mechanisms underlying these processes enables the repurposing of already known drugs and the development of new biological therapeutics that aim to reverse fibrosis by promoting apoptosis and regulate autophagy in personalized treatment approach. In SSc-ILD patients, the molecular signature of the lung tissues of each patient could be a distinctive criterion in order to establish the correct lung pattern, which directly impacts the course and prognosis of the disease. In this case, resolving the role of tissue-specific markers, which could be detected in the circulation using sensitive molecular methods, would be an important step toward development of non-invasive diagnostic procedures that enable early and precise diagnosis and preventing the high mortality of this rare disease.
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Affiliation(s)
- Vesna Spasovski
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Marina Andjelkovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Marina Parezanovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Jovana Komazec
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Milena Ugrin
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Kristel Klaassen
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Maja Stojiljkovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
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8
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Lupo V, Di Gregorio MG, Mastrogiorgio G, Magliozzi M, Scapillati ME, Maglione V, Romanelli E, Alegiani C, Haass C, Novelli A. Neonatal diagnosis of ACTA2-related disease: A case report and review of literature. Am J Med Genet A 2023; 191:1111-1118. [PMID: 36607831 DOI: 10.1002/ajmg.a.63118] [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: 10/11/2022] [Revised: 11/14/2022] [Accepted: 12/26/2022] [Indexed: 01/07/2023]
Abstract
Multisystemic smooth muscle dysfunction syndrome (MSMDS, OMIM # 613834) is a rare autosomal dominant condition caused by pathogenetic variants of ACTA2 gene that result in impaired muscle contraction. MSMDS is characterized by an increased susceptibility to aneurismal dilatations and dissections, patent ductus arteriosus, early onset coronary artery disease, congenital mydriasis, chronic interstitial lung disease, hypoperistalsis, hydrops of gall bladder, and hypotonic bladder. Here, we report an early diagnosis of a MSMDS related to ACTA2 p.Arg179His (R179H) mutation in a newborn and performed a review of the literature. An early diagnosis of MSMDS is extremely important, because of the severe involvement of cardiovascular system in the MSMDS. Multidisciplinary care and surveillance and timely management of symptoms are important to reduce the risk of complications.
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Affiliation(s)
- Viviana Lupo
- Medical Genetics Unit, San Pietro-Fatebenefratelli Hospital, Rome, Italy
| | | | | | - Monia Magliozzi
- Laboratory of Medical Genetics, Bambino Gesù Children's Hospital, IRCSS, Rome, Italy
| | | | - Vittorio Maglione
- Medical Genetics Unit, San Pietro-Fatebenefratelli Hospital, Rome, Italy
| | - Ester Romanelli
- Medical Genetics Unit, San Pietro-Fatebenefratelli Hospital, Rome, Italy
| | - Caterina Alegiani
- Neonatal Intensive Unit, San Pietro-Fatebenefratelli Hospital, Rome, Italy
| | - Cristina Haass
- Neonatal Intensive Unit, San Pietro-Fatebenefratelli Hospital, Rome, Italy
| | - Antonio Novelli
- Laboratory of Medical Genetics, Bambino Gesù Children's Hospital, IRCSS, Rome, Italy
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9
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Kümper M, Zamek J, Steinkamp J, Pach E, Mauch C, Zigrino P. Role of MMP3 and fibroblast-MMP14 in skin homeostasis and repair. Eur J Cell Biol 2022; 101:151276. [PMID: 36162272 DOI: 10.1016/j.ejcb.2022.151276] [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: 07/06/2022] [Revised: 09/09/2022] [Accepted: 09/21/2022] [Indexed: 12/14/2022] Open
Abstract
Early lethality of mice with complete deletion of the matrix metalloproteinase MMP14 emphasized the proteases' pleiotropic functions. MMP14 deletion in adult dermal fibroblasts (MMP14Sf-/-) caused collagen type I accumulation and upregulation of MMP3 expression. To identify the compensatory role of MMP3, mice were generated with MMP3 deletion in addition to MMP14 loss in fibroblasts. These double deficient mice displayed a fibrotic phenotype in skin and tendons as detected in MMP14Sf-/- mice, but no additional obvious defects were detected. However, challenging the mice with full thickness excision wounds resulted in delayed closure of early wounds in the double deficient mice compared to wildtype and MMP14 single knockout controls. Over time wounds closed and epidermal integrity was restored. Interestingly, on day seven, post-wounding myofibroblast density was lower in the wounds of all knockout than in controls, they were higher on day 14. The delayed resolution of myofibroblasts from the granulation tissue is paralleled by reduced apoptosis of these cells, although proliferation of myofibroblasts is induced in the double deficient mice. Further analysis showed comparable TGFβ1 and TGFβR1 expression among all genotypes. In addition, in vitro, fibroblasts lacking MMP3 and MMP14 retained their ability to differentiate into myofibroblasts in response to TGFβ1 treatment and mechanical stress. However, in vivo, p-Smad2 was reduced in myofibroblasts at day 5 post-wounding, in double, but most significant in single knockout, indicating their involvement in TGFβ1 activation. Thus, although MMP3 does not compensate for the lack of fibroblast-MMP14 in tissue homeostasis, simultaneous deletion of both proteases in fibroblasts delays wound closure during skin repair. Notably, single and double deficiency of these proteases modulates myofibroblast formation and resolution in wounds.
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Affiliation(s)
- Maike Kümper
- Department of Dermatology and Venereology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
| | - Jan Zamek
- Department of Dermatology and Venereology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
| | - Joy Steinkamp
- Department of Dermatology and Venereology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
| | - Elke Pach
- Department of Dermatology and Venereology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
| | - Cornelia Mauch
- Department of Dermatology and Venereology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
| | - Paola Zigrino
- Department of Dermatology and Venereology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
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10
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Shishikura D, Octavia Y, Hayat U, Thondapu V, Barlis P. Atherogenesis and Inflammation. Interv Cardiol 2022. [DOI: 10.1002/9781119697367.ch1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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11
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Abstract
PURPOSE OF REVIEW The importance of cardiovascular disease (CVD) in women has long been underestimated. Therefore, we need to understand the impact of sex differences on CVD. RECENT FINDINGS Traditional risk factors contribute to coronary artery disease (CAD) differently in women and men. There are female-specific risk factors and comorbid conditions that affect the risk of CAD. Plaque erosion is frequently seen in younger women who smoke, while plaque rupture is common in older women and men who have elevated blood cholesterol. Coronary artery calcification is also different in both sexes. Thus, coronary artery calcification score-based risk stratification in women is challenging. A deeper understanding of the sex differences in the risk factors and plaque morphology of coronary atherosclerosis may lead to improved outcomes of CVD in women.
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12
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Sakic A, Chaabane C, Ambartsumian N, Klingelhöfer J, Lemeille S, Kwak BR, Grigorian M, Bochaton-Piallat ML. Neutralization of S100A4 induces stabilization of atherosclerotic plaques: role of smooth muscle cells. Cardiovasc Res 2022; 118:141-155. [PMID: 33135065 PMCID: PMC8752361 DOI: 10.1093/cvr/cvaa311] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 10/20/2020] [Indexed: 01/20/2023] Open
Abstract
AIMS During atherosclerosis, smooth muscle cells (SMCs) accumulate in the intima where they switch from a contractile to a synthetic phenotype. From porcine coronary artery, we isolated spindle-shaped (S) SMCs exhibiting features of the contractile phenotype and rhomboid (R) SMCs typical of the synthetic phenotype. S100A4 was identified as a marker of R-SMCs in vitro and intimal SMCs, in pig and man. S100A4 exhibits intra- and extracellular functions. In this study, we investigated the role of extracellular S100A4 in SMC phenotypic transition. METHODS AND RESULTS S-SMCs were treated with oligomeric recombinant S100A4 (oS100A4), which induced nuclear factor (NF)-κB activation. Treatment of S-SMCs with oS100A4 in combination with platelet-derived growth factor (PDGF)-BB induced a complete SMC transition towards a pro-inflammatory R-phenotype associated with NF-κB activation, through toll-like receptor-4. RNA sequencing of cells treated with oS100A4/PDGF-BB revealed a strong up-regulation of pro-inflammatory genes and enrichment of transcription factor binding sites essential for SMC phenotypic transition. In a mouse model of established atherosclerosis, neutralization of extracellular S100A4 decreased area of atherosclerotic lesions, necrotic core, and CD68 expression and increased α-smooth muscle actin and smooth muscle myosin heavy chain expression. CONCLUSION We suggest that the neutralization of extracellular S100A4 promotes the stabilization of atherosclerotic plaques. Extracellular S100A4 could be a new target to influence the evolution of atherosclerotic plaques.
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MESH Headings
- Actins/metabolism
- Animals
- Antibodies, Neutralizing/pharmacology
- Antigens, CD/metabolism
- Antigens, Differentiation, Myelomonocytic/metabolism
- Aorta/drug effects
- Aorta/metabolism
- Aorta/pathology
- Aortic Diseases/drug therapy
- Aortic Diseases/genetics
- Aortic Diseases/metabolism
- Aortic Diseases/pathology
- Atherosclerosis/drug therapy
- Atherosclerosis/genetics
- Atherosclerosis/metabolism
- Atherosclerosis/pathology
- Becaplermin/pharmacology
- Cells, Cultured
- Disease Models, Animal
- Humans
- Mice, Inbred C57BL
- Mice, Knockout, ApoE
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Myosin Heavy Chains/metabolism
- Phenotype
- Plaque, Atherosclerotic
- S100 Calcium-Binding Protein A4/antagonists & inhibitors
- S100 Calcium-Binding Protein A4/metabolism
- S100 Calcium-Binding Protein A4/pharmacology
- Signal Transduction
- Smooth Muscle Myosins/metabolism
- Sus scrofa
- Toll-Like Receptor 4/metabolism
- Mice
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Affiliation(s)
- Antonija Sakic
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Chiraz Chaabane
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Noona Ambartsumian
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark
| | - Jörg Klingelhöfer
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark
| | - Sylvain Lemeille
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Brenda R Kwak
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Mariam Grigorian
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark
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13
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Joner M, Seguchi M, Sato Y, Virmani R. Early spontaneous reperfusion after acute myocardial infarction: true association with plaque phenotype or simple clinical observation? EUROINTERVENTION 2021; 17:e613-e615. [PMID: 34596565 PMCID: PMC9707485 DOI: 10.4244/eijv17i8a110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Michael Joner
- German Heart Centre Munich, Technical University of Munich, Lazarettstraße 36, 80636 Munich, Germany
| | - Masaru Seguchi
- Deutsches Herzzentrum München, Technical University of Munich, Munich, Germany
| | - Yu Sato
- CVPath Institute, Gaithersburg, MD, USA
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14
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15
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Specific miRNA and Gene Deregulation Characterize the Increased Angiogenic Remodeling of Thoracic Aneurysmatic Aortopathy in Marfan Syndrome. Int J Mol Sci 2020; 21:ijms21186886. [PMID: 32961817 PMCID: PMC7555983 DOI: 10.3390/ijms21186886] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/17/2020] [Accepted: 09/19/2020] [Indexed: 12/11/2022] Open
Abstract
Marfan syndrome (MFS) is a connective tissue disease caused by mutations in the FBN1 gene, leading to alterations in the extracellular matrix microfibril assembly and the early formation of thoracic aorta aneurysms (TAAs). Non-genetic TAAs share many clinico-pathological aspects with MFS and deregulation of some microRNAs (miRNAs) has been demonstrated to be involved in the progression of TAA. In this study, 40 patients undergoing elective ascending aorta surgery were enrolled to compare TAA histomorphological features, miRNA profile and related target genes in order to find specific alterations that may explain the earlier and more severe clinical outcomes in MFS patients. Histomorphological, ultrastructural and in vitro studies were performed in order to compare aortic wall features of MFS and non-MFS TAA. MFS displayed greater glycosaminoglycan accumulation and loss/fragmentation of elastic fibers compared to non-MFS TAA. Immunohistochemistry revealed increased CD133+ angiogenic remodeling, greater MMP-2 expression, inflammation and smooth muscle cell (SMC) turnover in MFS TAA. Cultured SMCs from MFS confirmed higher turnover and α-smooth muscle actin expression compared with non-MFS TAA. Moreover, twenty-five miRNAs, including miR-26a, miR-29, miR-143 and miR-145, were found to be downregulated and only miR-632 was upregulated in MFS TAA in vivo. Bioinformatics analysis revealed that some deregulated miRNAs in MFS TAA are implicated in cell proliferation, extracellular matrix structure/function and TGFβ signaling. Finally, gene analysis showed 28 upregulated and seven downregulated genes in MFS TAA, some of them belonging to the CDH1/APC and CCNA2/TP53 signaling pathways. Specific miRNA and gene deregulation characterized the aortopathy of MFS and this was associated with increased angiogenic remodeling, likely favoring the early and more severe clinical outcomes, compared to non-MFS TAA. Our findings provide new insights concerning the pathogenetic mechanisms of MFS TAA; further investigation is needed to confirm if these newly identified specific deregulated miRNAs may represent potential therapeutic targets to counteract the rapid progression of MFS aortopathy.
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16
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Current Advances in the Diagnostic Imaging of Atherosclerosis: Insights into the Pathophysiology of Vulnerable Plaque. Int J Mol Sci 2020; 21:ijms21082992. [PMID: 32340284 PMCID: PMC7216001 DOI: 10.3390/ijms21082992] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/02/2020] [Accepted: 04/15/2020] [Indexed: 12/13/2022] Open
Abstract
Atherosclerosis is a lipoprotein-driven inflammatory disorder leading to a plaque formation at specific sites of the arterial tree. After decades of slow progression, atherosclerotic plaque rupture and formation of thrombi are the major factors responsible for the development of acute coronary syndromes (ACSs). In this regard, the detection of high-risk (vulnerable) plaques is an ultimate goal in the management of atherosclerosis and cardiovascular diseases (CVDs). Vulnerable plaques have specific morphological features that make their detection possible, hence allowing for identification of high-risk patients and the tailoring of therapy. Plaque ruptures predominantly occur amongst lesions characterized as thin-cap fibroatheromas (TCFA). Plaques without a rupture, such as plaque erosions, are also thrombi-forming lesions on the most frequent pathological intimal thickening or fibroatheromas. Many attempts to comprehensively identify vulnerable plaque constituents with different invasive and non-invasive imaging technologies have been made. In this review, advantages and limitations of invasive and non-invasive imaging modalities currently available for the identification of plaque components and morphologic features associated with plaque vulnerability, as well as their clinical diagnostic and prognostic value, were discussed.
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17
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Medley SC, Rathnakar BH, Georgescu C, Wren JD, Olson LE. Fibroblast-specific Stat1 deletion enhances the myofibroblast phenotype during tissue repair. Wound Repair Regen 2020; 28:448-459. [PMID: 32175700 DOI: 10.1111/wrr.12807] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 02/12/2020] [Accepted: 03/10/2020] [Indexed: 12/17/2022]
Abstract
Signal transducer and activator of transcription 1 (Stat1) is a ubiquitously expressed latent transcription factor that is activated by many cytokines and growth factors. Global Stat1 knockout mice are prone to chemical-induced lung and liver fibrosis, suggesting roles for Stat1 in tissue repair. However, the importance of Stat1 in fibroblast-mediated and vascular smooth muscle cell (VSMC)-mediated injury response has not been directly evaluated in vivo. Here, we focused on two models of tissue repair in conditional Stat1 knockout mice: excisional skin wounding in mice with Stat1 deletion in dermal fibroblasts, and carotid artery ligation in mice with global Stat1 deletion or deletion specific to VSMCs. In the skin model, dermal wounds closed at a similar rate in mice with fibroblast Stat1 deletion and controls, but collagen and α-smooth muscle actin (αSMA) expression were increased in the mutant granulation tissue. Cultured Stat1 -/- and Stat1 +/- dermal fibroblasts exhibited similar αSMA+ stress fiber assembly, collagen gel contraction, proliferation, migration, and growth factor-induced gene expression. In the artery ligation model, there was a significant increase in fibroblast-driven perivascular fibrosis when Stat1 was deleted globally. However, VSMC-driven remodeling and neointima formation were unchanged when Stat1 was deleted specifically in VSMCs. These results suggest an in vivo role for Stat1 as a suppressor of fibroblast mediated, but not VSMC mediated, injury responses, and a suppressor of the myofibroblast phenotype.
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Affiliation(s)
- Shayna C Medley
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA.,Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Bharath H Rathnakar
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Constantin Georgescu
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Jonathan D Wren
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Lorin E Olson
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA.,Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
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18
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Orenstein JM. An ultrastructural pathologist's views on fibroblasts, modified smooth muscle cells, wound healing, stenosing arteriopathies, Kawasaki disease, Dupuytren's contracture, and the stroma of carcinomas. Ultrastruct Pathol 2020; 44:2-14. [PMID: 32154752 DOI: 10.1080/01913123.2019.1704332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
It wasn't until 1960 that the dense bodies of the peripheral actin arrays of fibroblasts were finally visualized, i.e., stress fibers (SFs). Mistakenly assumed that its SFs turned the fibroblast into a unique cell situated somewhere in a continuum between it and a smooth muscle cell (SMC), it was descriptively named a "myofibroblast" (MF). Automatically, spindle cells with SFs and/or smooth muscle actin by SMA IHC-staining, became MFs, although endothelial cells, pericytes, modified SMCs (mSMC), and myoepithelial cells all contain SFs. An invisible "intermediate" cell was hypothesized to exist somewhere between SMA-negative and positive fibroblasts, and named a "proto-myofibroblast". The sub-epithelial spindle cells of normal and malignant tumors of the GI, GU, and respiratory tracts are all fibroblasts with SFs. The second erroneous myofibroblast came from a 1971 rat wound healing study and its 1974 human counterpart. Updated analysis of the papers' TEMs proved that the cells are mSMCs and not fibroblasts (AKA: MFs). The pathognomonic cells of Dupuytren's contracture are mSMCs and fibroblasts and that of the stenosing arteriopathy of Kawasaki Disease and other similar arteriopathies are mSMCs. TEM remains a powerful tool.
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19
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Vallée A, Lecarpentier Y. TGF-β in fibrosis by acting as a conductor for contractile properties of myofibroblasts. Cell Biosci 2019; 9:98. [PMID: 31827764 PMCID: PMC6902440 DOI: 10.1186/s13578-019-0362-3] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 11/30/2019] [Indexed: 12/21/2022] Open
Abstract
Myofibroblasts are non-muscle contractile cells that play a key physiologically role in organs such as the stem villi of the human placenta during physiological pregnancy. They are able to contract and relax in response to changes in the volume of the intervillous chamber. Myofibroblasts have also been observed in several diseases and are involved in wound healing and the fibrotic processes affecting several organs, such as the liver, lungs, kidneys and heart. During the fibrotic process, tissue retraction rather than contraction is correlated with collagen synthesis in the extracellular matrix, leading to irreversible fibrosis and, finally, apoptosis of myofibroblasts. The molecular motor of myofibroblasts is the non-muscle type IIA and B myosin (NMMIIA and NMMIIB). Fibroblast differentiation into myofibroblasts is largely governed by the transforming growth factor-β1 (TGF-β1). This system controls the canonical WNT/β-catenin pathway in a positive manner, and PPARγ in a negative manner. The WNT/β-catenin pathway promotes fibrosis, while PPARγ prevents it. This review focuses on the contractile properties of myofibroblasts and the conductor, TGF-β1, which together control the opposing interplay between PPARγ and the canonical WNT/β-catenin pathway.
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Affiliation(s)
- Alexandre Vallée
- 1Délégation à la Recherche Clinique (DRCI), Hôpital Foch, Suresnes, France.,DACTIM-MIS, Laboratoire de Mathématiques et Applications (LMA), CNRS, UMR 7348, Université de Poitiers, CHU de Poitiers, Poitiers, France
| | - Yves Lecarpentier
- Centre de Recherche Clinique, Grand Hôpital de l'Est Francilien (GHEF), Meaux, France
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20
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Singh S, Torzewski M. Fibroblasts and Their Pathological Functions in the Fibrosis of Aortic Valve Sclerosis and Atherosclerosis. Biomolecules 2019; 9:biom9090472. [PMID: 31510085 PMCID: PMC6769553 DOI: 10.3390/biom9090472] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/02/2019] [Accepted: 09/04/2019] [Indexed: 02/06/2023] Open
Abstract
Cardiovascular diseases, such as atherosclerosis and aortic valve sclerosis (AVS) are driven by inflammation induced by a variety of stimuli, including low-density lipoproteins (LDL), reactive oxygen species (ROS), infections, mechanical stress, and chemical insults. Fibrosis is the process of compensating for tissue injury caused by chronic inflammation. Fibrosis is initially beneficial and maintains extracellular homeostasis. However, in the case of AVS and atherosclerosis, persistently active resident fibroblasts, myofibroblasts, and smooth muscle cells (SMCs) perpetually remodel the extracellular matrix under the control of autocrine and paracrine signaling from the immune cells. Myofibroblasts also produce pro-fibrotic factors, such as transforming growth factor-β1 (TGF-β1), angiotensin II (Ang II), and interleukin-1 (IL-1), which allow them to assist in the activation and migration of resident immune cells. Post wound repair, these cells undergo apoptosis or become senescent; however, in the presence of unresolved inflammation and persistence signaling for myofibroblast activation, the tissue homeostasis is disturbed, leading to excessive extracellular matrix (ECM) secretion, disorganized ECM, and thickening of the affected tissue. Accumulating evidence suggests that diverse mechanisms drive fibrosis in cardiovascular pathologies, and it is crucial to understand the impact and contribution of the various mechanisms for the control of fibrosis before the onset of a severe pathological consequence.
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Affiliation(s)
- Savita Singh
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology and University of Tuebingen, 70376 Stuttgart, Germany.
| | - Michael Torzewski
- Department of Laboratory Medicine and Hospital Hygiene, Robert-Bosch-Hospital, 70376 Stuttgart, Germany.
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21
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Allahverdian S, Chaabane C, Boukais K, Francis GA, Bochaton-Piallat ML. Smooth muscle cell fate and plasticity in atherosclerosis. Cardiovasc Res 2019; 114:540-550. [PMID: 29385543 DOI: 10.1093/cvr/cvy022] [Citation(s) in RCA: 315] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 01/22/2018] [Indexed: 12/21/2022] Open
Abstract
Current knowledge suggests that intimal smooth muscle cells (SMCs) in native atherosclerotic plaque derive mainly from the medial arterial layer. During this process, SMCs undergo complex structural and functional changes giving rise to a broad spectrum of phenotypes. Classically, intimal SMCs are described as dedifferentiated/synthetic SMCs, a phenotype characterized by reduced expression of contractile proteins. Intimal SMCs are considered to have a beneficial role by contributing to the fibrous cap and thereby stabilizing atherosclerotic plaque. However, intimal SMCs can lose their properties to such an extent that they become hard to identify, contribute significantly to the foam cell population, and acquire inflammatory-like cell features. This review highlights mechanisms of SMC plasticity in different stages of native atherosclerotic plaque formation, their potential for monoclonal or oligoclonal expansion, as well as recent findings demonstrating the underestimated deleterious role of SMCs in this disease.
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Affiliation(s)
- Sima Allahverdian
- Department of Medicine, Centre for Heart Lung Innovation, Providence Health Care Research Institute, University of British Columbia, Room 166 Burrard Building, St Paul's Hospital, 1081 Burrard Street, Vancouver, BC V6Z 1Y6, Canada
| | - Chiraz Chaabane
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Rue Michel Servet-1, 1211 Geneva 4, Switzerland
| | - Kamel Boukais
- Department of Medicine, Centre for Heart Lung Innovation, Providence Health Care Research Institute, University of British Columbia, Room 166 Burrard Building, St Paul's Hospital, 1081 Burrard Street, Vancouver, BC V6Z 1Y6, Canada
| | - Gordon A Francis
- Department of Medicine, Centre for Heart Lung Innovation, Providence Health Care Research Institute, University of British Columbia, Room 166 Burrard Building, St Paul's Hospital, 1081 Burrard Street, Vancouver, BC V6Z 1Y6, Canada
| | - Marie-Luce Bochaton-Piallat
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Rue Michel Servet-1, 1211 Geneva 4, Switzerland
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22
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Pratsinis H, Mavrogonatou E, Kletsas D. Scarless wound healing: From development to senescence. Adv Drug Deliv Rev 2019; 146:325-343. [PMID: 29654790 DOI: 10.1016/j.addr.2018.04.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 03/29/2018] [Accepted: 04/09/2018] [Indexed: 12/21/2022]
Abstract
An essential element of tissue homeostasis is the response to injuries, cutaneous wound healing being the most studied example. In the adults, wound healing aims at quickly restoring the barrier function of the skin, leading however to scar, a dysfunctional fibrotic tissue. On the other hand, in fetuses a scarless tissue regeneration takes place. During ageing, the wound healing capacity declines; however, in the absence of comorbidities a higher quality in tissue repair is observed. Senescent cells have been found to accumulate in chronic unhealed wounds, but more recent reports indicate that their transient presence may be beneficial for tissue repair. In this review data on skin wound healing and scarring are presented, covering the whole spectrum from early embryonic development to adulthood, and furthermore until ageing of the organism.
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23
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Wang L, Nakamura F. Identification of Filamin A Mechanobinding Partner I: Smoothelin Specifically Interacts with the Filamin A Mechanosensitive Domain 21. Biochemistry 2019; 58:4726-4736. [PMID: 30990690 DOI: 10.1021/acs.biochem.9b00100] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Filamin A (FLNA) is a ubiquitously expressed actin cross-linking protein and a scaffold of numerous binding partners to regulate cell proliferation, migration, and survival. FLNA is a homodimer, and each subunit has an N-terminal actin-binding domain followed by 24 immunoglobulin-like repeats (R). FLNA mediates mechanotransduction by force-induced conformational changes of its cryptic integrin-binding site on R21. Here, we identified two novel FLNA-binding partners, smoothelins (SMTN A and B) and leucine zipper protein 1 (LUZP1), using stable isotope labeling by amino acids in cell culture (SILAC)-based proteomics followed by an in silico screening for proteins having a consensus FLNA-binding domain. We found that, although SMTN does not interact with full-length FLNA, it binds to FLNA variant 1 (FLNAvar-1) that exposes the cryptic CD cleft of R21. Point mutations on the C strand that disrupt the integrin binding also block the SMTN interaction. We identified FLNA-binding domains on SMTN using mutagenesis and used the mutant SMTN to investigate the role of the FLNA-SMTN interaction on the dynamics and localization of SMTN in living cells. Fluorescence recovery after photobleaching (FRAP) of GFP-labeled SMTN in living cells demonstrated that the non-FLNA-binding mutant SMTN diffuses faster than wild-type SMTN. Moreover, inhibition of Rho-kinase using Y27632 also increases the diffusion. These data demonstrated that SMTN specifically interacts with FLNAvar-1 and mechanically activated FLNA in cells. The companion report (Wang and Nakamura, 2019) describes the interactions of FLNA with the transcript of the LUZP1 gene.
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Affiliation(s)
- Lina Wang
- School of Pharmaceutical Science and Technology, Life Science Platform , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China
| | - Fumihiko Nakamura
- School of Pharmaceutical Science and Technology, Life Science Platform , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China
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24
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Sudden coronary death in the young: Evidence of contractile phenotype of smooth muscle cells in the culprit atherosclerotic plaque. Int J Cardiol 2019; 264:1-6. [PMID: 29776555 DOI: 10.1016/j.ijcard.2018.02.096] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 02/12/2018] [Accepted: 02/23/2018] [Indexed: 11/21/2022]
Abstract
BACKGROUND Culprit coronary atherosclerotic plaques (APs) from young sudden cardiac death (SCD) victims are mostly non-atheromatous, i.e., consisting of proliferative smooth muscle cells (SMCs). Coronary vasospasm has been advocated to explain plaque instability in the absence of thrombosis. Our aim was to characterize the SMC phenotype in the intima and media of coronary arteries from young SCD victims. METHODS AND RESULTS A total of 38 coronary artery segments were studied: (a) 18 APs from young (≤40 years old) SCD patients, (b) 9 APs from old (>40 years old) SCD patients, (c) 11 non-atherosclerotic coronary arteries from young patients (≤40 years old). Markers of differentiated SMCs such as α-smooth muscle actin (α-SMA), smooth muscle myosin heavy chains (SMMHCs), and heavy-caldesmon (h-CaD), were assessed in intima and media by immunohistochemistry and quantified morphometrically. In the intima, their expression was higher in non-atherosclerotic arteries (44.37 ± 3.03% for α-SMA, 14.21 ± 2.01% for SMMHCs, 8.90 ± 1.33% for h-CaD) and APs from young SCD victims (38.95 ± 2.29% for α-SMA, 11.92 ± 1.92% for SMMHCs, 8.93 ± 1.12% for h-CaD) compared with old patients (22.01 ± 3.56% for α-SMA, 6.39 ± 0.7% for SMMHCs, 3.00 ± 0.57% for h-CaD; all P statistically significant). The media of non-atherosclerotic arteries and APs from young SCD victims exhibited strong positivity for the differentiation markers unlike that of old patients. CONCLUSIONS SMCs of coronary APs as well as from the underlying media from young SCD victims exhibit strong contractile phenotype. In the setting of critical stenosis, both intima and media SMC contractility might contribute to transient coronary spasm leading to myocardial ischemia and SCD.
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25
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Contribution of p62/SQSTM1 to PDGF-BB-induced myofibroblast-like phenotypic transition in vascular smooth muscle cells lacking Smpd1 gene. Cell Death Dis 2018; 9:1145. [PMID: 30451833 PMCID: PMC6242941 DOI: 10.1038/s41419-018-1197-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 12/17/2022]
Abstract
Accumulating evidence indicates a critical role of autophagy in regulating vascular smooth muscle cell (SMC) homeostasis in atherogenesis. However, little is known about the modulatory role of autophagy in PDGF-BB-induced SMC transition towards the synthetic phenotype and extracellular matrix remodeling. We recently demonstrated that acid sphingomyelinase (ASM, encoded by Smpd1 gene) controls autophagy maturation in coronary arterial SMCs. Here, we demonstrate that PDGF-BB stimulation causes a myofibroblast-like non-canonical synthetic phenotype transition in Smpd1−/− SMCs. These non-canonical phenotypic changes induced by PDGF-BB in Smpd1−/− SMCs were characterized by increased expression of fibroblast-specific protein (FSP-1), massive deposition of collagen type I, decreased cell size, elevated inflammatory status with enhanced cytokine release and adhesion molecule expression. Mechanistically, PDGF-BB induces prolonged Akt activation that causes decreased autophagosome biogenesis and thereby exaggerates p62/SQSTM1 accumulation in Smpd1−/− SMCs. More importantly, Akt inhibition or p62/SQSTM1 gene silencing attenuates PDGF-BB-induced phenotypic changes in Smpd1−/− SMCs. This first demonstration of a p62/SQSTM1-dependent myofibroblast-like phenotypic transition in Smpd1−/− SMCs suggests that ASM-mediated autophagy pathway contributes to maintaining the arterial smooth muscle homeostasis in situation of vascular remodeling during atherosclerosis.
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26
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Zhang X, Simmons CA, Santerre JP. Alterations of MEK1/2-ERK1/2, IFNγ and Smad2/3 associated Signalling pathways during cryopreservation of ASCs affect their differentiation towards VSMC-like cells. Stem Cell Res 2018; 32:115-125. [DOI: 10.1016/j.scr.2018.09.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/06/2018] [Accepted: 09/07/2018] [Indexed: 12/13/2022] Open
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Forte A, Bancone C, Cipollaro M, De Feo M, Della Corte A. Ascending aortas from heart donors and CABG patients are not equivalent as control in aortopathy studies. SCAND CARDIOVASC J 2018; 52:281-286. [PMID: 30043668 DOI: 10.1080/14017431.2018.1494303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
OBJECTIVES A careful selection of reference samples in studies on the pathogenesis of thoracic ascending aorta (TAA) dilation is crucial for reliability, consistency and reproducibility of experimental results. Several studies include control TAA samples from heart donors. Others include samples harvested during coronary artery bypass graft (CABG) procedures or a mix of samples from heart donors and CABG patients. We verified the equivalence/homogeneity of TAA samples from heart donors and CABG patients in terms of basal gene expression and thus their reliability as reference groups in aortopathy studies. DESIGN We analysed by RT-PCR and Western blot the differential expression of smoothelin, α-smooth muscle actin (α-SMA) and transforming growth factor-β1 (TGF-β1), selected as major players in smooth muscle cell and myofibroblast phenotype and remodelling. The mean age and comorbidities of subjects were consistent with data routinely seen in clinical practice. RESULTS Data revealed the loss of smoothelin in samples from CABG patients, together with a significant increase of α-SMA, while TGF-β1 dimer showed a marked increase in CABG patients versus heart donors, accompanied by a decrease of the corresponding mRNA. Differences in gene expression were maintained after adjustment for age. However, TGF-β1 mRNA and CABG patients' age showed a positive correlation (ρ = 0.89, p < .05), while α-SMA mRNA and age showed a negative correlation (ρ = -0.85, p < .05). CONCLUSIONS We revealed the non-equivalence of samples from heart donors and CABG patients, presumably for the presence of microscopic atherosclerotic lesions in CABG patients, suggesting the necessity of a careful selection of control groups in aortopathy studies.
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Affiliation(s)
- Amalia Forte
- a Department of Translational Medical Sciences , Università degli Studi della Campania "L. Vanvitelli" , Naples , Italy
| | - Ciro Bancone
- a Department of Translational Medical Sciences , Università degli Studi della Campania "L. Vanvitelli" , Naples , Italy
| | - Marilena Cipollaro
- b Department of Experimental Medicine , Università degli Studi della Campania "L. Vanvitelli" , Naples , Italy
| | - Marisa De Feo
- a Department of Translational Medical Sciences , Università degli Studi della Campania "L. Vanvitelli" , Naples , Italy
| | - Alessandro Della Corte
- a Department of Translational Medical Sciences , Università degli Studi della Campania "L. Vanvitelli" , Naples , Italy
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Lecarpentier Y, Schussler O, Sakic A, Rincon-Garriz JM, Soulie P, Bochaton-Piallat ML, Kindler V. Human Bone Marrow Contains Mesenchymal Stromal Stem Cells That Differentiate In Vitro into Contractile Myofibroblasts Controlling T Lymphocyte Proliferation. Stem Cells Int 2018; 2018:6134787. [PMID: 29853916 PMCID: PMC5949154 DOI: 10.1155/2018/6134787] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 02/20/2018] [Accepted: 03/08/2018] [Indexed: 01/22/2023] Open
Abstract
Mesenchymal stromal stem cells (MSC) that reside in the bone marrow (BM) can be amplified in vitro. In 2-dimension (D) cultures, MSC exhibit a morphology similar to fibroblasts, are able to inhibit T lymphocyte and natural killer cell proliferation, and can be differentiated into adipocytes, chondrocytes, or osteoblasts if exposed to specific media. Here we show that medullar MSC cultured in 2D formed an adherent stroma of cells expressing well-organized microfilaments containing α-smooth muscle actin and nonmuscle myosin heavy chain IIA. MSC could be grown in 3D in collagen membranes generating a structure which, upon exposition to 50 mM KCl or to an alternating electric current, developed a contractile strength that averaged 34 and 45 μN/mm2, respectively. Such mechanical tension was similar in intensity and in duration to that of human placenta and was annihilated by isosorbide dinitrate or 2,3-butanedione monoxime. Membranes devoid of MSC did not exhibit a significant contractility. Moreover, MSC nested in collagen membranes were able to control T lymphocyte proliferation, and differentiated into adipocytes, chondrocytes, or osteoblasts. Our observations show that BM-derived MSC cultured in collagen membranes spontaneously differentiate into contractile myofibroblasts exhibiting unexpected properties in terms of cell differentiation potential and of immunomodulatory function.
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Affiliation(s)
- Yves Lecarpentier
- Centre de Recherche Clinique, Grand Hôpital de l'Est Francillien, 77104 Meaux, France
| | - Olivier Schussler
- Department of Cardiovascular Surgery, Research Laboratory, University Hospitals, Faculty of Medicine, Geneva, Switzerland
| | - Antonija Sakic
- Department of Pathology and Immunology, Centre Médical Universitaire Geneva Faculty of Medicine, Geneva, Switzerland
| | - José Maria Rincon-Garriz
- Department of Specialties in Medicine, Hematology Service, Geneva University Hospitals, Faculty of Medicine, Geneva, Switzerland
| | - Priscilla Soulie
- Department of Histology, Centre Médical Universitaire Geneva Faculty of Medicine, Geneva, Switzerland
| | - Marie-Luce Bochaton-Piallat
- Department of Pathology and Immunology, Centre Médical Universitaire Geneva Faculty of Medicine, Geneva, Switzerland
| | - Vincent Kindler
- Department of Specialties in Medicine, Hematology Service, Geneva University Hospitals, Faculty of Medicine, Geneva, Switzerland
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Leszczynska A, Murphy JM. Vascular Calcification: Is it rather a Stem/Progenitor Cells Driven Phenomenon? Front Bioeng Biotechnol 2018; 6:10. [PMID: 29479528 PMCID: PMC5811524 DOI: 10.3389/fbioe.2018.00010] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/22/2018] [Indexed: 12/21/2022] Open
Abstract
Vascular calcification (VC) has witnessed a surge of interest. Vasculature is virtually an omnipresent organ and has a notably high capacity for repair throughout embryonic and adult life. Of the vascular diseases, atherosclerosis is a leading cause of morbidity and mortality on account of ectopic cartilage and bone formation. Despite the identification of a number of risk factors, all the current theories explaining pathogenesis of VC in atherosclerosis are far from complete. The most widely accepted response to injury theory and smooth muscle transdifferentiation to explain the VC observed in atherosclerosis is being challenged. Recent focus on circulating and resident progenitor cells in the vasculature and their role in atherogenesis and VC has been the driving force behind this review. This review discusses intrinsic cellular players contributing to fate determination of cells and tissues to form ectopic cartilage and bone formation.
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Affiliation(s)
- Aleksandra Leszczynska
- Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - J Mary Murphy
- Regenerative Medicine Institute, National University of Ireland Galway, Galway, Ireland
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Murali M, MacDonald JA. Smoothelins and the Control of Muscle Contractility. ADVANCES IN PHARMACOLOGY 2018; 81:39-78. [DOI: 10.1016/bs.apha.2017.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Hamilton JA, Hasturk H, Kantarci A, Serhan CN, Van Dyke T. Atherosclerosis, Periodontal Disease, and Treatment with Resolvins. Curr Atheroscler Rep 2017; 19:57. [PMID: 29110146 DOI: 10.1007/s11883-017-0696-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE OF REVIEW This review aims to discuss the existing evidence on the link between atherosclerosis and periodontitis by particularly presenting new findings that link the pathology and therapy of these diseases. Acute vascular ischemic events that can lead to stroke or myocardial infarction are initiated by inflammatory processes leading to rupture or erosion of plaques susceptible to thrombosis ("high risk" or "vulnerable"). These are highly inflamed plaques residing in the media and adventitia that may not be detected by angiography measurments of luminal narrowing. Statistically significant excess risk for atherosclerotic cardiovascular disease has been reported in persons with periodontitis independent of established risk factors. We hypothesized that the systemic pathologic links also represent potential therapeutic links. RECENT FINDINGS We recently demonstrated that periodontal inflammation promotes atherosclerotic plaque inflammation and destabilization. As discrete pathological regions, these plaques with a high susceptibility to rupture can be imaged and differentiated from lower risk plaques. In cholesterol-fed rabbits with periodontal disease, circulating inflammatory mediators were also significantly elevated thereby contributing to "vulnerable blood," a systemic characteristic of high risk for cardiovascular events. New studies show that certain lipid mediators, including lipoxins and resolvins, are potent in preventing and possibly treating a number of inflammation-associated diseases, including periodontitis and vascular inflammation. The concept of the vulnerable patient and the pro-resolving approach open new terrain for discovery of paradigm-changing therapies for the prevention and treatment of two of the most common diseases of man. Importantly, lipoxins and resolvins are natural receptor agonists that do not exhibit the same pro-atherogenic side effects attributed to anti-inflammatory medications (e.g., NSAIDs) but rather coordinate resolution of inflammation and a return to homeostasis.
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Affiliation(s)
- James A Hamilton
- Department of Physiology and Biophysics, Boston University School of Medicine, 700 Albany Street, W302, Boston, MA, 02118-2526, USA.
| | - Hatice Hasturk
- Department of Applied Oral Sciences, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
| | - Alpdogan Kantarci
- Department of Applied Oral Sciences, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
| | - Charles N Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Thomas Van Dyke
- Department of Applied Oral Sciences, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
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Lecarpentier Y, Schussler O, Claes V, Vallée A. The Myofibroblast: TGFβ-1, A Conductor which Plays a Key Role in Fibrosis by Regulating the Balance between PPARγ and the Canonical WNT Pathway. NUCLEAR RECEPTOR RESEARCH 2017. [DOI: 10.11131/2017/101299] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Yves Lecarpentier
- Centre de Recherche Clinique, Grand Hôpital de l’Est Francilien (GHEP), Meaux, France
| | - Olivier Schussler
- Department of Cardiovascular Surgery, Cardiovascular Research Laboratory, HUG/CMU, Geneva, Switzerland
| | - Victor Claes
- Department of Pharmaceutical Sciences, University of Antwerp, Wilrijk, Belgium
| | - Alexandre Vallée
- Experimental and Clinical Neurosciences Laboratory, INSERM U1084, University of Poitiers, Poitiers, France
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Vallée A, Lecarpentier Y, Guillevin R, Vallée JN. Interactions between TGF-β1, canonical WNT/β-catenin pathway and PPAR γ in radiation-induced fibrosis. Oncotarget 2017; 8:90579-90604. [PMID: 29163854 PMCID: PMC5685775 DOI: 10.18632/oncotarget.21234] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/17/2017] [Indexed: 12/16/2022] Open
Abstract
Radiation therapy induces DNA damage and inflammation leading to fibrosis. Fibrosis can occur 4 to 12 months after radiation therapy. This process worsens with time and years. Radiation-induced fibrosis is characterized by fibroblasts proliferation, myofibroblast differentiation, and synthesis of collagen, proteoglycans and extracellular matrix. Myofibroblasts are non-muscle cells that can contract and relax. Myofibroblasts evolve towards irreversible retraction during fibrosis process. In this review, we discussed the interplays between transforming growth factor-β1 (TGF-β1), canonical WNT/β-catenin pathway and peroxisome proliferator-activated receptor gamma (PPAR γ) in regulating the molecular mechanisms underlying the radiation-induced fibrosis, and the potential role of PPAR γ agonists. Overexpression of TGF-β and canonical WNT/β-catenin pathway stimulate fibroblasts accumulation and myofibroblast differentiation whereas PPAR γ expression decreases due to the opposite interplay of canonical WNT/β-catenin pathway. Both TGF-β1 and canonical WNT/β-catenin pathway stimulate each other through the Smad pathway and non-Smad pathways such as phosphatidylinositol 3-kinase/serine/threonine kinase (PI3K/Akt) signaling. WNT/β-catenin pathway and PPAR γ interact in an opposite manner. PPAR γ agonists decrease β-catenin levels through activation of inhibitors of the WNT pathway such as Smad7, glycogen synthase kinase-3 (GSK-3 β) and dickkopf-related protein 1 (DKK1). PPAR γ agonists also stimulate phosphatase and tensin homolog (PTEN) expression, which decreases both TGF-β1 and PI3K/Akt pathways. PPAR γ agonists by activating Smad7 decrease Smads pathway and then TGF-β signaling leading to decrease radiation-induced fibrosis. TGF-β1 and canonical WNT/β-catenin pathway promote radiation-induced fibrosis whereas PPAR γ agonists can prevent radiation-induced fibrosis.
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Affiliation(s)
- Alexandre Vallée
- Experimental and Clinical Neurosciences Laboratory, INSERM U1084, University of Poitiers, Poitiers, France.,Laboratory of Mathematics and Applications (LMA), UMR CNRS 7348, University of Poitiers, Poitiers, France
| | - Yves Lecarpentier
- Centre de Recherche Clinique, Grand Hôpital de l'Est Francilien (GHEF), Meaux, France
| | - Rémy Guillevin
- DACTIM, UMR CNRS 7348, University of Poitiers et CHU de Poitiers, Poitiers, France
| | - Jean-Noël Vallée
- Laboratory of Mathematics and Applications (LMA), UMR CNRS 7348, University of Poitiers, Poitiers, France.,CHU Amiens Picardie, University of Picardie Jules Verne (UPJV), Amiens, France
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35
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Yuan SM. α-Smooth Muscle Actin and ACTA2 Gene Expressions in Vasculopathies. Braz J Cardiovasc Surg 2016; 30:644-9. [PMID: 26934405 PMCID: PMC4762557 DOI: 10.5935/1678-9741.20150081] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 11/23/2015] [Indexed: 12/27/2022] Open
Abstract
α-smooth muscle actin, encoded by ACTA2 gene, is an isoform of the
vascular smooth muscle actins, typically expressed in the vascular smooth muscle
cells contributing to vascular motility and contraction. ACTA2 gene mutations
cause a diversity of diffuse vasculopathies such as thoracic aortic aneurysms
and dissections as well as occlusive vascular diseases, including premature
coronary artery disease and ischemic stroke. Dynamics of
differentiation-specific α-smooth muscle actin in arterial smooth muscle
cells and proliferation of the proteins have been well described. Although a
variety of research works have been undertaken in terms of modifications of
α-smooth muscle actin and mutations of ACTA2 gene and myosin, the
underlying mechanisms towards the pathological processes by way of gene
mutations are yet to be clarified. The purpose of the present article is to
describe the phenotypes of α-smooth muscle actin and implications of
ACTA2 mutations in vasculopathies in order to enhance the understanding of
potential mechanisms of aortic and coronary disorders.
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36
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Wohlschlaeger J, Bertram S, Theegarten D, Hager T, Baba HA. [Coronary atherosclerosis and progression to unstable plaques : Histomorphological and molecular aspects]. Herz 2016. [PMID: 26216542 DOI: 10.1007/s00059-015-4341-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Atherosclerosis causes clinical symptoms through luminal narrowing by stenosis or by precipitating thrombi that obstruct blood flow to the myocardium (coronary artery disease), central nervous system (ischemic stroke) or lower extremities (peripheral vascular disease). The most common of these manifestations of atherosclerosis is coronary artery disease, clinically presenting as either stable angina or acute coronary syndromes. Atherosclerosis is a mainly lipoprotein-driven disease, which is associated with the formation of atherosclerotic plaques at specific sites of the vascular system through inflammation, necrosis, fibrosis and calcification. In most cases, plaque rupture of a so-called thin-cap fibroatheroma leads to contact of the necrotic core material of the underlying atherosclerotic plaque with blood, resulting in the formation of a thrombus with acute occlusion of the affected (coronary) artery. The atherosclerotic lesions that can cause acute coronary syndromes by formation of a thrombotic occlusion encompass (1) thin-cap fibroatheroma, (2) plaque erosion and (3) so-called calcified nodules in calcified and tortuous arteries of aged individuals. The underlying pathomechanisms remain incompletely understood so far. In this review, the mechanisms of atherosclerotic plaque initiation and progression are discussed.
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Affiliation(s)
- Jeremias Wohlschlaeger
- Institut für Pathologie, Universitätsklinik Essen, Essen, Deutschland.
- Institut für Pathologie, Evang.-luth. Diakonissenanstalt zu Flensburg, Flensburg, Deutschland.
| | - S Bertram
- Institut für Pathologie, Universitätsklinik Essen, Essen, Deutschland
| | - D Theegarten
- Institut für Pathologie, Universitätsklinik Essen, Essen, Deutschland
| | - T Hager
- Institut für Pathologie, Universitätsklinik Essen, Essen, Deutschland
| | - H A Baba
- Institut für Pathologie, Universitätsklinik Essen, Essen, Deutschland
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Rumora AE, Ferris LA, Wheeler TR, Kelm RJ. Electrostatic and Hydrophobic Interactions Mediate Single-Stranded DNA Recognition and Acta2 Repression by Purine-Rich Element-Binding Protein B. Biochemistry 2016; 55:2794-805. [PMID: 27064749 DOI: 10.1021/acs.biochem.6b00006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Myofibroblast differentiation is characterized by an increased level of expression of cytoskeletal smooth muscle α-actin. In human and murine fibroblasts, the gene encoding smooth muscle α-actin (Acta2) is tightly regulated by a network of transcription factors that either activate or repress the 5' promoter-enhancer in response to environmental cues signaling tissue repair and remodeling. Purine-rich element-binding protein B (Purβ) suppresses the expression of Acta2 by cooperatively interacting with the sense strand of a 5' polypurine sequence containing an inverted MCAT cis element required for gene activation. In this study, we evaluated the chemical basis of nucleoprotein complex formation between the Purβ repressor and the purine-rich strand of the MCAT element in the mouse Acta2 promoter. Quantitative single-stranded DNA (ssDNA) binding assays conducted in the presence of increasing concentrations of monovalent salt or anionic detergent suggested that the assembly of a high-affinity nucleoprotein complex is driven by a combination of electrostatic and hydrophobic interactions. Consistent with the results of pH titration analysis, site-directed mutagenesis revealed several basic amino acid residues in the intermolecular (R267) and intramolecular (K82 and R159) subdomains that are essential for Purβ transcriptional repressor function in Acta2 promoter-reporter assays. In keeping with their diminished Acta2 repressor activity in fibroblasts, purified Purβ variants containing an R267A mutation exhibited reduced binding affinity for purine-rich ssDNA. Moreover, certain double and triple-point mutants were also defective in binding to the Acta2 corepressor protein, Y-box-binding protein 1. Collectively, these findings establish the repertoire of noncovalent interactions that account for the unique structural and functional properties of Purβ.
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Affiliation(s)
- Amy E Rumora
- Department of Biochemistry, ‡Department of Medicine, and §Cardiovascular Research Institute of Vermont, University of Vermont College of Medicine , Burlington, Vermont 05405, United States
| | - Lauren A Ferris
- Department of Biochemistry, ‡Department of Medicine, and §Cardiovascular Research Institute of Vermont, University of Vermont College of Medicine , Burlington, Vermont 05405, United States
| | - Tamar R Wheeler
- Department of Biochemistry, ‡Department of Medicine, and §Cardiovascular Research Institute of Vermont, University of Vermont College of Medicine , Burlington, Vermont 05405, United States
| | - Robert J Kelm
- Department of Biochemistry, ‡Department of Medicine, and §Cardiovascular Research Institute of Vermont, University of Vermont College of Medicine , Burlington, Vermont 05405, United States
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Bochaton-Piallat ML, Gabbiani G, Hinz B. The myofibroblast in wound healing and fibrosis: answered and unanswered questions. F1000Res 2016; 5. [PMID: 27158462 PMCID: PMC4847562 DOI: 10.12688/f1000research.8190.1] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/25/2016] [Indexed: 12/23/2022] Open
Abstract
The discovery of the myofibroblast has allowed definition of the cell responsible for wound contraction and for the development of fibrotic changes. This review summarizes the main features of the myofibroblast and the mechanisms of myofibroblast generation. Myofibroblasts originate from a variety of cells according to the organ and the type of lesion. The mechanisms of myofibroblast contraction, which appear clearly different to those of smooth muscle cell contraction, are described. Finally, we summarize the possible strategies in order to reduce myofibroblast activities and thus influence several pathologies, such as hypertrophic scars and organ fibrosis.
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Affiliation(s)
| | - Giulio Gabbiani
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Boris Hinz
- Laboratory of Tissue Repair and Regeneration, Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Toronto, Canada
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Expression of CD24 in Human Bone Marrow-Derived Mesenchymal Stromal Cells Is Regulated by TGFβ3 and Induces a Myofibroblast-Like Genotype. Stem Cells Int 2015; 2016:1319578. [PMID: 26788063 PMCID: PMC4691640 DOI: 10.1155/2016/1319578] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 08/11/2015] [Accepted: 08/12/2015] [Indexed: 12/17/2022] Open
Abstract
Human bone marrow-derived stromal cells (hBMSCs) derived from the adult organism hold great promise for diverse settings in regenerative medicine. Therefore a more complete understanding of hBMSC biology to fully exploit the cells' potential for clinical settings is important. The protein CD24 has been reported to be involved in a diverse range of processes such as cancer, adaptive immunity, inflammation, and autoimmune diseases in other cell types. Its expression in hBMSCs, which has not yet been analyzed, may add an important aspect in the understanding of hBMSC biology. The present study therefore analyzes the expression, regulation, and functional implication of the surface protein CD24 in hBMSCs. Methods used are stimulation studies with TGF beta as well as shRNA-mediated knockdown and overexpression of CD24 followed by microarray, immunocytochemistry, and flow cytometric analyses. To our knowledge, we demonstrate for the first time that the expression of CD24 is an inherent property of hBMSCs. Importantly, the data links the upregulation of CD24 to the adoption of a myofibroblast-like gene expression pattern in hBMSCs. We demonstrate that CD24 is an important modulator in transforming growth factor beta 3 (TGFβ3) signaling with a reciprocal regulatory relationship between these two proteins.
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40
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Fierro-Fernández M, Miguel V, Lamas S. Role of redoximiRs in fibrogenesis. Redox Biol 2015; 7:58-67. [PMID: 26654978 PMCID: PMC4683389 DOI: 10.1016/j.redox.2015.11.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 11/18/2015] [Indexed: 02/06/2023] Open
Abstract
Fibrosis can be defined as an excessive accumulation of extracellular matrix (ECM) components, ultimately leading to stiffness, scarring and devitalized tissue. MicroRNAs (miRNAs) are short, 19-25 nucleotides (nt), non-coding RNAs involved in the post-transcriptional regulation of gene expression. Recently, miRNAs have also emerged as powerful regulators of fibrotic processes and have been termed "fibromiRs". Oxidative stress represents a self-perpetuating mechanism in fibrogenesis. MiRNAs can also influence the expression of genes responsible for the generation of reactive oxygen species (ROS) and antioxidant defence and are termed "redoximiRs". Here, we review the current knowledge of mechanisms by which "redoximiRs" regulate fibrogenesis. This new set of miRNAs may be called "redoxifibromiRs".
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Affiliation(s)
- Marta Fierro-Fernández
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain.
| | - Verónica Miguel
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Santiago Lamas
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain.
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Thomson S, Edin ML, Lih FB, Davies M, Yaqoob MM, Hammock BD, Gilroy D, Zeldin DC, Bishop-Bailey D. Intimal smooth muscle cells are a source but not a sensor of anti-inflammatory CYP450 derived oxylipins. Biochem Biophys Res Commun 2015; 463:774-80. [PMID: 26086108 PMCID: PMC4533761 DOI: 10.1016/j.bbrc.2015.06.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 06/02/2015] [Indexed: 12/14/2022]
Abstract
Vascular pathologies are associated with changes in the presence and expression of morphologically distinct vascular smooth muscle cells. In particular, in complex human vascular lesions and models of disease in pigs and rodents, an intimal smooth muscle cell (iSMC) which exhibits a stable epithelioid or rhomboid phenotype in culture is often found to be present in high numbers, and may represent the reemergence of a distinct developmental vascular smooth muscle cell phenotype. The CYP450-oxylipin - soluble epoxide hydrolase (sEH) pathway is currently of great interest in targeting for cardiovascular disease. sEH inhibitors limit the development of hypertension, diabetes, atherosclerosis and aneurysm formation in animal models. We have investigated the expression of CYP450-oxylipin-sEH pathway enzymes and their metabolites in paired intimal (iSMC) and medial (mSMC) cells isolated from rat aorta. iSMC basally released significantly larger amounts of epoxy-oxylipin CYP450 products from eicosapentaenoic acid > docosahexaenoic acid > arachidonic acid > linoleic acid, and expressed higher levels of CYP2C12, CYP2B1, but not CYP2J mRNA compared to mSMC. When stimulated with the pro-inflammatory TLR4 ligand LPS, epoxy-oxylipin production did not change greatly in iSMC. In contrast, LPS induced epoxy-oxylipin products in mSMC and induced CYP2J4. iSMC and mSMC express sEH which metabolizes primary epoxy-oxylipins to their dihydroxy-counterparts. The sEH inhibitors TPPU or AUDA inhibited LPS-induced NFκB activation and iNOS induction in mSMC, but had no effect on NFκB nuclear localization or inducible nitric oxide synthase in iSMC; effects which were recapitulated in part by addition of authentic epoxy-oxylipins. iSMCs are a rich source but not a sensor of anti-inflammatory epoxy-oxylipins. Complex lesions that contain high levels of iSMCs may be more resistant to the protective effects of sEH inhibitors. We examined oxylipin production in different SMC phenotypes. Intimal SMC produced more oxylipins than medial SMC. CYPs were differentially expressed and regulated by LPS in intimal and medial SMC. sEH inhibitors reduce inflammation in medial but not intimal SMC. Intimal SMC are a source but not sensor of epoxy-oxylipins.
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Affiliation(s)
- Scott Thomson
- Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London NW1 0TU, UK
| | - Matthew L Edin
- Division of Intramural Research, NIEHS/NIH, Research Triangle Park, NC 27709, USA
| | - Fred B Lih
- Division of Intramural Research, NIEHS/NIH, Research Triangle Park, NC 27709, USA
| | - Michael Davies
- Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London NW1 0TU, UK
| | - Muhammad M Yaqoob
- Barts and the London, Queen Mary University, Charterhouse Square, London EC1M 6BQ, UK
| | - Bruce D Hammock
- Department of Entomology and Comprehensive Cancer Center, University of California, Davies, CA 95616-8584, USA
| | - Derek Gilroy
- University College London, University Street, London, UK
| | - Darryl C Zeldin
- Division of Intramural Research, NIEHS/NIH, Research Triangle Park, NC 27709, USA
| | - David Bishop-Bailey
- Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London NW1 0TU, UK.
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Resveratrol inhibits phenotypic switching of neointimal vascular smooth muscle cells after balloon injury through blockade of Notch pathway. J Cardiovasc Pharmacol 2014; 63:233-9. [PMID: 24603118 DOI: 10.1097/fjc.0000000000000040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Phenotypic switching of vascular smooth muscle cells (VSMCs) plays an initial role in neointimal hyperplasia, the main cause of many occlusive vascular diseases. The aim of this study was to measure the effects of resveratrol (RSV) on the phenotypic transformation of VSMCs and to investigate its mechanism of action. METHODS Cultured VSMCs isolated from rat thoracic aorta were prepared with serum starvation for 72 hours followed by RSV treatment (50-200 μmol/L) and 10% serum stimulation. Male Sprague-Dawley rats, subjected to carotid arteries injury from a balloon catheter, were exposed to intraperitoneal injection of RSV (1 mg/kg) or saline and were killed after 7 or 28 days. RESULTS Compared with cells in the serum-induced group, VSMCs in the RSV or N-[N-(3, 5-Difluorophenacetyl)-L-alanyl]-S-phenylglycine t-butyl ester (DAPT) treatment group exhibited significant decreases of proliferation and migration. The total and cytoplasmic Notch-1 levels were declined by RSV, accompanied by a significant increase in smooth muscle α-actin and smooth muscle myosin heavy chain protein. The expression of Notch-1, Jagged-1, Hey-1, and Hey-2 mRNA in balloon-injured arteries at 7 days was decreased by RSV treatment. Arteries from RSV-treated rats showed less neointimal hyperplasia, lower collagen content, and a lower rate of cells positive for proliferating cell nuclear antigen 28 days after injury, compared with saline controls. CONCLUSIONS The results indicate that RSV can attenuate phenotypic switching of VSMCs after arterial injury through inhibition of the Notch pathway.
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Darby IA, Laverdet B, Bonté F, Desmoulière A. Fibroblasts and myofibroblasts in wound healing. Clin Cosmet Investig Dermatol 2014; 7:301-11. [PMID: 25395868 PMCID: PMC4226391 DOI: 10.2147/ccid.s50046] [Citation(s) in RCA: 405] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
(Myo)fibroblasts are key players for maintaining skin homeostasis and for orchestrating physiological tissue repair. (Myo)fibroblasts are embedded in a sophisticated extracellular matrix (ECM) that they secrete, and a complex and interactive dialogue exists between (myo)fibroblasts and their microenvironment. In addition to the secretion of the ECM, (myo)fibroblasts, by secreting matrix metalloproteinases and tissue inhibitors of metalloproteinases, are able to remodel this ECM. (Myo)fibroblasts and their microenvironment form an evolving network during tissue repair, with reciprocal actions leading to cell differentiation, proliferation, quiescence, or apoptosis, and actions on growth factor bioavailability by binding, sequestration, and activation. In addition, the (myo)fibroblast phenotype is regulated by mechanical stresses to which they are subjected and thus by mechanical signaling. In pathological situations (excessive scarring or fibrosis), or during aging, this dialogue between the (myo)fibroblasts and their microenvironment may be altered or disrupted, leading to repair defects or to injuries with damaged and/or cosmetic skin alterations such as wrinkle development. The intimate dialogue between the (myo)fibroblasts and their microenvironment therefore represents a fascinating domain that must be better understood in order not only to characterize new therapeutic targets and drugs able to prevent or treat pathological developments but also to interfere with skin alterations observed during normal aging or premature aging induced by a deleterious environment.
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Affiliation(s)
- Ian A Darby
- School of Medical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Betty Laverdet
- Department of Physiology and EA 6309, FR 3503, Faculties of Medicine and Pharmacy, University of Limoges, Limoges, France
| | | | - Alexis Desmoulière
- Department of Physiology and EA 6309, FR 3503, Faculties of Medicine and Pharmacy, University of Limoges, Limoges, France
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Abstract
Atherosclerosis causes clinical disease through luminal narrowing or by precipitating thrombi that obstruct blood flow to the heart (coronary heart disease), brain (ischemic stroke), or lower extremities (peripheral vascular disease). The most common of these manifestations is coronary heart disease, including stable angina pectoris and the acute coronary syndromes. Atherosclerosis is a lipoprotein-driven disease that leads to plaque formation at specific sites of the arterial tree through intimal inflammation, necrosis, fibrosis, and calcification. After decades of indolent progression, such plaques may suddenly cause life-threatening coronary thrombosis presenting as an acute coronary syndrome. Most often, the culprit morphology is plaque rupture with exposure of highly thrombogenic, red cell–rich necrotic core material. The permissive structural requirement for this to occur is an extremely thin fibrous cap, and thus, ruptures occur mainly among lesions defined as thin-cap fibroatheromas. Also common are thrombi forming on lesions without rupture (plaque erosion), most often on pathological intimal thickening or fibroatheromas. However, the mechanisms involved in plaque erosion remain largely unknown, although coronary spasm is suspected. The calcified nodule has been suggested as a rare cause of coronary thrombosis in highly calcified and tortious arteries in older individuals. To characterize the severity and prognosis of plaques, several terms are used. Plaque burden denotes the extent of disease, whereas plaque activity is an ambiguous term, which may refer to one of several processes that characterize progression. Plaque vulnerability describes the short-term risk of precipitating symptomatic thrombosis. In this review, we discuss mechanisms of atherosclerotic plaque initiation and progression; how plaques suddenly precipitate life-threatening thrombi; and the concepts of plaque burden, activity, and vulnerability.
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Turner SR, MacDonald JA. Novel Contributions of the Smoothelin-like 1 Protein in Vascular Smooth Muscle Contraction and its Potential Involvement in Myogenic Tone. Microcirculation 2014; 21:249-58. [DOI: 10.1111/micc.12108] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 11/04/2013] [Indexed: 12/19/2022]
Affiliation(s)
- Sara R. Turner
- The Smooth Muscle Research Group at the Libin Cardiovascular Institute of Alberta; Department of Biochemistry & Molecular Biology; University of Calgary; Calgary Alberta Canada
| | - Justin A. MacDonald
- The Smooth Muscle Research Group at the Libin Cardiovascular Institute of Alberta; Department of Biochemistry & Molecular Biology; University of Calgary; Calgary Alberta Canada
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Cai X. Regulation of smooth muscle cells in development and vascular disease: current therapeutic strategies. Expert Rev Cardiovasc Ther 2014; 4:789-800. [PMID: 17173496 DOI: 10.1586/14779072.4.6.789] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Vascular smooth muscle cells (SMCs) exhibit extensive phenotypic diversity and rapid growth during embryonic development, but maintain a quiescent, differentiated state in adult. The pathogenesis of vascular proliferative diseases involves the proliferation and migration of medial vascular SMCs into the vessel intima, possibly reinstating their embryonic gene expression programs. Multiple mitogenic stimuli induce vascular SMC proliferation through cell cycle progression. Therapeutic strategies targeting cell cycle progression and mitogenic stimuli have been developed and evaluated in animal models of atherosclerosis and vascular injury, and several clinical studies. Recent discoveries on the recruitment of vascular progenitor cells to the sites of vascular injury suggest new therapeutic potentials of progenitor cell-based therapies to accelerate re-endothelialization and prevent engraftment of SMC-lineage progenitor cells. Owing to the complex and multifactorial nature of SMC regulation, combinatorial antiproliferative approaches are likely to be used in the future in order to achieve maximal efficacy and reduce toxicity.
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MESH Headings
- Animals
- Cell Differentiation
- Cellular Senescence
- Clinical Trials as Topic
- Disease Progression
- Drug Delivery Systems
- Gene Expression
- Genetic Therapy
- Humans
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/embryology
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Phenotype
- Stents
- Vascular Diseases/drug therapy
- Vascular Diseases/genetics
- Vascular Diseases/metabolism
- Vascular Diseases/pathology
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Affiliation(s)
- Xinjiang Cai
- Duke University Medical Center, Departments of Medicine (Cardiology) & Cell Biology, Durham, North Carolina 27710, USA.
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Müller HFG, Viaccoz A, Kuzmanovic I, Bonvin C, Burkhardt K, Bochaton-Piallat ML, Sztajzel R. Contrast-enhanced ultrasound imaging of carotid plaque neo-vascularization: accuracy of visual analysis. ULTRASOUND IN MEDICINE & BIOLOGY 2014; 40:18-24. [PMID: 24139919 DOI: 10.1016/j.ultrasmedbio.2013.08.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 07/13/2013] [Accepted: 08/12/2013] [Indexed: 06/02/2023]
Abstract
The aim of our study was to evaluate whether neo-vascularization of the carotid plaque can be accurately assessed by visual analysis of contrast-enhanced ultrasound images and whether these findings correlate with intensity-over-time curve analysis (ITC) and histopathology. Patients with ≥50% symptomatic or ≥60% asymptomatic stenosis according to European Carotid Surgery Trial criteria were included. Four investigators evaluated contrast enhancement visually (three grades), with positive agreement when three or more investigators were unanimous. ITC analysis of contrast enhancement was performed in the plaque and in the lumen. Histopathology (microvessel density with CD34 + staining) was completed when endarterectomy was performed. Visual grading (33 patients, inter-observer agreement = 94%) correlated significantly with ITC analysis (p = 0.03). Histopathology (n = 19) revealed a larger CD34 + area in patients with grade 1/2 versus grade 0 (p = 0.03). Visual analysis of neo-vascularization by means of contrast-enhanced ultrasound imaging is accurate and reproducible, with significant correlations with ITC and histopathology.
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Bashur CA, Ramamurthi A. Composition of intraperitoneally implanted electrospun conduits modulates cellular elastic matrix generation. Acta Biomater 2014; 10:163-72. [PMID: 24016842 PMCID: PMC4024661 DOI: 10.1016/j.actbio.2013.08.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 08/07/2013] [Accepted: 08/29/2013] [Indexed: 12/28/2022]
Abstract
Improving elastic matrix generation is critical to developing functional tissue engineered vascular grafts. Therefore, this study pursued a strategy to grow autologous tissue in vivo by recruiting potentially more elastogenic cells to conduits implanted within the peritoneal cavity. The goal was to determine the impacts of electrospun conduit composition and hyaluronan oligomer (HA-o) modification on the recruitment of peritoneal cells, and their phenotype and ability to synthesize elastic matrix. These responses were assessed as a function of conduit intra-peritoneal implantation time. This study showed that the blending of collagen with poly(ε-caprolactone) (PCL) promotes a faster wound healing response, as assessed by trends in expression of macrophage and smooth muscle cell (SMC) contractile markers and in matrix deposition, compared to the more chronic response for PCL alone. This result, along with the increase in elastic matrix production, demonstrates the benefits of incorporating as little as 25% w/w collagen into the conduit. In addition, PCR analysis demonstrated the challenges in differentiating between a myofibroblast and an SMC using traditional phenotypic markers. Finally, the impact of the tethered HA-o is limited within the inflammatory environment, unlike the significant response found previously in vitro. In conclusion, these results demonstrate the importance of both careful control of implanted scaffold composition and the development of appropriate delivery methods for HA-o.
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Affiliation(s)
- Chris A. Bashur
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Anand Ramamurthi
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH 44195, USA
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Calmodulin Expression Distinguishes the Smooth Muscle Cell Population of Human Carotid Plaque. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 183:996-1009. [DOI: 10.1016/j.ajpath.2013.06.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 05/06/2013] [Accepted: 06/03/2013] [Indexed: 11/20/2022]
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50
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Coen M, Burkhardt K, Bijlenga P, Gabbiani G, Schaller K, Kövari E, Rüfenacht DA, Ruíz DSM, Pizzolato G, Bochaton-Piallat ML. Smooth muscle cells of human intracranial aneurysms assume phenotypic features similar to those of the atherosclerotic plaque. Cardiovasc Pathol 2013; 22:339-44. [DOI: 10.1016/j.carpath.2013.01.083] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 01/16/2013] [Accepted: 01/25/2013] [Indexed: 11/29/2022] Open
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