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Evaluation of canine 2D cell cultures as models of myxomatous mitral valve degeneration

The utility of cells cultured from the mitral valve as models of myxomatous diseases needs to be properly validated. In this study valve interstitial cells (VICs) and valve endothelial cells (VECs) were cultured from normal and diseased canine mitral valves in 2% (v/v) or 10% FBS media, in the prese...

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Published in:PloS one 2019-08, Vol.14 (8), p.e0221126-e0221126
Main Authors: Tan, Karen, Markby, Greg, Muirhead, Rhona, Blake, Rachel, Bergeron, Lisa, Fici, Greg, Summers, Kim, Macrae, Vicky, Corcoran, Brendan
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Markby, Greg
Muirhead, Rhona
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Summers, Kim
Macrae, Vicky
Corcoran, Brendan
description The utility of cells cultured from the mitral valve as models of myxomatous diseases needs to be properly validated. In this study valve interstitial cells (VICs) and valve endothelial cells (VECs) were cultured from normal and diseased canine mitral valves in 2% (v/v) or 10% FBS media, in the presence of TGFβ1, 2 and 3, the TGFβ RI kinase inhibitor SB431542 and TGFβ neutralising antibodies, 5HT and the 5HT2RB antagonist LY272015. Cultures were examined by morphology, transcriptomic profiling, protein expression of the cell specific markers αSMA and SM22α (VICs), and CD31 (VECs), deposition of proteoglycans (PG), the PG versican, and the TGFβs themselves. VECs derived from normal valves were CD31+/αSMA-, but those from diseased valves were αSMA+, indicating endothelial-to-mesenchymal (EndoMT) transition had occurred. The TGFβs induced EndoMT in normal VECs, and this was abolished by SB431542, with significant changes in αSMA, CD31 and HAS2 expression (P
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In this study valve interstitial cells (VICs) and valve endothelial cells (VECs) were cultured from normal and diseased canine mitral valves in 2% (v/v) or 10% FBS media, in the presence of TGFβ1, 2 and 3, the TGFβ RI kinase inhibitor SB431542 and TGFβ neutralising antibodies, 5HT and the 5HT2RB antagonist LY272015. Cultures were examined by morphology, transcriptomic profiling, protein expression of the cell specific markers αSMA and SM22α (VICs), and CD31 (VECs), deposition of proteoglycans (PG), the PG versican, and the TGFβs themselves. VECs derived from normal valves were CD31+/αSMA-, but those from diseased valves were αSMA+, indicating endothelial-to-mesenchymal (EndoMT) transition had occurred. The TGFβs induced EndoMT in normal VECs, and this was abolished by SB431542, with significant changes in αSMA, CD31 and HAS2 expression (P&lt;0.05). Normal VICs cultured in 10% FBS media were αSMA+ (activated myofibroblast (disease) phenotype), but were αSMA- when grown in 2% FBS. VICs from diseased dogs were αSMA+ in 2% FBS (retention of the activated myofibroblast disease phenotype), with significantly increased TGFβ1 expression (P&lt;0.05) compared to normal cells. Treatment of normal and diseased VICs with the TGFβs significantly increased expression of αSMA, SM22α, versican, the TGFβs themselves, and deposition of PGs (P&lt;0.05), with TGFβ1 being the most potent activator. These effects were either abolished or markedly reduced by SB431542 and a pan-TGFβ neutralizing antibody (P&lt;0.05). SB431542 also markedly reduced αSMA expression in VICs from diseased valves, but 5HT and LY272015 had no effect on VIC phenotype. Transcriptomic profiling identified clear differences in gene expression for the different conditions and treatments that partially matched that seen in native diseased valve tissue, including changes in expression of ACTA2 (αSMA), 5HTR2B, TAGLN (SM22α) and MYH10 (SMemb), gene ontology terms and canonical signalling pathways. Normal and diseased VICs and normal VECs from canine mitral valves can be successfully grown in culture with retention of phenotype, which can be manipulated using TGFβ1 and the TGFβ RI kinase inhibitor SB431542. This optimized cell system can now be used to model MMVD to elucidate disease mechanisms and identify key regulators of disease progression.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0221126</identifier><identifier>PMID: 31415646</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Animals ; Antibodies ; Antigens, Differentiation - metabolism ; Biology and Life Sciences ; Catheters ; Cell adhesion &amp; migration ; Cell culture ; Cell Culture Techniques ; Criminal investigation ; Cytology ; Degeneration ; Deposition ; Development and progression ; Dog diseases ; Dog Diseases - metabolism ; Dog Diseases - pathology ; Dogs ; Endothelial cells ; Endothelial Cells - metabolism ; Endothelial Cells - pathology ; Endothelium ; Enzyme inhibitors ; Extracellular matrix ; Gene expression ; Genes ; Genotype &amp; phenotype ; Growth factors ; Heart ; Heart valve diseases ; Heart valves ; Inhibitors ; Interstitial cells ; Kinases ; Medical treatment ; Medicine and Health Sciences ; Mesenchyme ; Mitral valve ; Mitral Valve - metabolism ; Mitral Valve - pathology ; Mitral Valve Prolapse - metabolism ; Mitral Valve Prolapse - pathology ; Models, Cardiovascular ; Morphology ; Myofibroblasts - metabolism ; Myofibroblasts - pathology ; Pathogenesis ; Phenotypes ; Proteoglycans ; Regulators ; Research and Analysis Methods ; Retention ; Signal transduction ; Stem cells ; Studies ; Transforming growth factor-b1 ; Transforming growth factors ; Two dimensional models ; Versican ; Veterinary research</subject><ispartof>PloS one, 2019-08, Vol.14 (8), p.e0221126-e0221126</ispartof><rights>COPYRIGHT 2019 Public Library of Science</rights><rights>2019 Tan et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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In this study valve interstitial cells (VICs) and valve endothelial cells (VECs) were cultured from normal and diseased canine mitral valves in 2% (v/v) or 10% FBS media, in the presence of TGFβ1, 2 and 3, the TGFβ RI kinase inhibitor SB431542 and TGFβ neutralising antibodies, 5HT and the 5HT2RB antagonist LY272015. Cultures were examined by morphology, transcriptomic profiling, protein expression of the cell specific markers αSMA and SM22α (VICs), and CD31 (VECs), deposition of proteoglycans (PG), the PG versican, and the TGFβs themselves. VECs derived from normal valves were CD31+/αSMA-, but those from diseased valves were αSMA+, indicating endothelial-to-mesenchymal (EndoMT) transition had occurred. The TGFβs induced EndoMT in normal VECs, and this was abolished by SB431542, with significant changes in αSMA, CD31 and HAS2 expression (P&lt;0.05). Normal VICs cultured in 10% FBS media were αSMA+ (activated myofibroblast (disease) phenotype), but were αSMA- when grown in 2% FBS. VICs from diseased dogs were αSMA+ in 2% FBS (retention of the activated myofibroblast disease phenotype), with significantly increased TGFβ1 expression (P&lt;0.05) compared to normal cells. Treatment of normal and diseased VICs with the TGFβs significantly increased expression of αSMA, SM22α, versican, the TGFβs themselves, and deposition of PGs (P&lt;0.05), with TGFβ1 being the most potent activator. These effects were either abolished or markedly reduced by SB431542 and a pan-TGFβ neutralizing antibody (P&lt;0.05). SB431542 also markedly reduced αSMA expression in VICs from diseased valves, but 5HT and LY272015 had no effect on VIC phenotype. Transcriptomic profiling identified clear differences in gene expression for the different conditions and treatments that partially matched that seen in native diseased valve tissue, including changes in expression of ACTA2 (αSMA), 5HTR2B, TAGLN (SM22α) and MYH10 (SMemb), gene ontology terms and canonical signalling pathways. Normal and diseased VICs and normal VECs from canine mitral valves can be successfully grown in culture with retention of phenotype, which can be manipulated using TGFβ1 and the TGFβ RI kinase inhibitor SB431542. This optimized cell system can now be used to model MMVD to elucidate disease mechanisms and identify key regulators of disease progression.</description><subject>Animals</subject><subject>Antibodies</subject><subject>Antigens, Differentiation - metabolism</subject><subject>Biology and Life Sciences</subject><subject>Catheters</subject><subject>Cell adhesion &amp; migration</subject><subject>Cell culture</subject><subject>Cell Culture Techniques</subject><subject>Criminal investigation</subject><subject>Cytology</subject><subject>Degeneration</subject><subject>Deposition</subject><subject>Development and progression</subject><subject>Dog diseases</subject><subject>Dog Diseases - metabolism</subject><subject>Dog Diseases - pathology</subject><subject>Dogs</subject><subject>Endothelial cells</subject><subject>Endothelial Cells - metabolism</subject><subject>Endothelial Cells - pathology</subject><subject>Endothelium</subject><subject>Enzyme inhibitors</subject><subject>Extracellular matrix</subject><subject>Gene expression</subject><subject>Genes</subject><subject>Genotype &amp; 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Allied Health Database (Alumni Edition)</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Agriculture Science Database</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>ProQuest Biological Science Journals</collection><collection>Engineering Database</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>ProQuest advanced technologies &amp; aerospace journals</collection><collection>ProQuest Advanced Technologies &amp; Aerospace Collection</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>Materials science collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering collection</collection><collection>Environmental Science Collection</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tan, Karen</au><au>Markby, Greg</au><au>Muirhead, Rhona</au><au>Blake, Rachel</au><au>Bergeron, Lisa</au><au>Fici, Greg</au><au>Summers, Kim</au><au>Macrae, Vicky</au><au>Corcoran, Brendan</au><au>Lionetti, Vincenzo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaluation of canine 2D cell cultures as models of myxomatous mitral valve degeneration</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2019-08-15</date><risdate>2019</risdate><volume>14</volume><issue>8</issue><spage>e0221126</spage><epage>e0221126</epage><pages>e0221126-e0221126</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>The utility of cells cultured from the mitral valve as models of myxomatous diseases needs to be properly validated. In this study valve interstitial cells (VICs) and valve endothelial cells (VECs) were cultured from normal and diseased canine mitral valves in 2% (v/v) or 10% FBS media, in the presence of TGFβ1, 2 and 3, the TGFβ RI kinase inhibitor SB431542 and TGFβ neutralising antibodies, 5HT and the 5HT2RB antagonist LY272015. Cultures were examined by morphology, transcriptomic profiling, protein expression of the cell specific markers αSMA and SM22α (VICs), and CD31 (VECs), deposition of proteoglycans (PG), the PG versican, and the TGFβs themselves. VECs derived from normal valves were CD31+/αSMA-, but those from diseased valves were αSMA+, indicating endothelial-to-mesenchymal (EndoMT) transition had occurred. The TGFβs induced EndoMT in normal VECs, and this was abolished by SB431542, with significant changes in αSMA, CD31 and HAS2 expression (P&lt;0.05). Normal VICs cultured in 10% FBS media were αSMA+ (activated myofibroblast (disease) phenotype), but were αSMA- when grown in 2% FBS. VICs from diseased dogs were αSMA+ in 2% FBS (retention of the activated myofibroblast disease phenotype), with significantly increased TGFβ1 expression (P&lt;0.05) compared to normal cells. Treatment of normal and diseased VICs with the TGFβs significantly increased expression of αSMA, SM22α, versican, the TGFβs themselves, and deposition of PGs (P&lt;0.05), with TGFβ1 being the most potent activator. These effects were either abolished or markedly reduced by SB431542 and a pan-TGFβ neutralizing antibody (P&lt;0.05). SB431542 also markedly reduced αSMA expression in VICs from diseased valves, but 5HT and LY272015 had no effect on VIC phenotype. Transcriptomic profiling identified clear differences in gene expression for the different conditions and treatments that partially matched that seen in native diseased valve tissue, including changes in expression of ACTA2 (αSMA), 5HTR2B, TAGLN (SM22α) and MYH10 (SMemb), gene ontology terms and canonical signalling pathways. Normal and diseased VICs and normal VECs from canine mitral valves can be successfully grown in culture with retention of phenotype, which can be manipulated using TGFβ1 and the TGFβ RI kinase inhibitor SB431542. This optimized cell system can now be used to model MMVD to elucidate disease mechanisms and identify key regulators of disease progression.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>31415646</pmid><doi>10.1371/journal.pone.0221126</doi><tpages>e0221126</tpages><orcidid>https://orcid.org/0000-0001-7453-9808</orcidid><oa>free_for_read</oa></addata></record>
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identifier ISSN: 1932-6203
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issn 1932-6203
1932-6203
language eng
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source NCBI_PubMed Central(免费); Publicly Available Content Database
subjects Animals
Antibodies
Antigens, Differentiation - metabolism
Biology and Life Sciences
Catheters
Cell adhesion & migration
Cell culture
Cell Culture Techniques
Criminal investigation
Cytology
Degeneration
Deposition
Development and progression
Dog diseases
Dog Diseases - metabolism
Dog Diseases - pathology
Dogs
Endothelial cells
Endothelial Cells - metabolism
Endothelial Cells - pathology
Endothelium
Enzyme inhibitors
Extracellular matrix
Gene expression
Genes
Genotype & phenotype
Growth factors
Heart
Heart valve diseases
Heart valves
Inhibitors
Interstitial cells
Kinases
Medical treatment
Medicine and Health Sciences
Mesenchyme
Mitral valve
Mitral Valve - metabolism
Mitral Valve - pathology
Mitral Valve Prolapse - metabolism
Mitral Valve Prolapse - pathology
Models, Cardiovascular
Morphology
Myofibroblasts - metabolism
Myofibroblasts - pathology
Pathogenesis
Phenotypes
Proteoglycans
Regulators
Research and Analysis Methods
Retention
Signal transduction
Stem cells
Studies
Transforming growth factor-b1
Transforming growth factors
Two dimensional models
Versican
Veterinary research
title Evaluation of canine 2D cell cultures as models of myxomatous mitral valve degeneration
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