Fibroblast Primary Cilia Are Required for Cardiac Fibrosis

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dc.contributor.authorVillalobos, Elisa
dc.contributor.authorCriollo, Alfredo
dc.contributor.authorSchiattarella, Gabriele G.
dc.contributor.authorAltamirano, Francisco
dc.contributor.authorFrench, Kristin M.
dc.contributor.authorMay, Herman, I
dc.contributor.authorJiang, Nan
dc.contributor.authorNgoc Uyen Nhi Nguyen
dc.contributor.authorRomero, Diego
dc.contributor.authorCarlos Roa, Juan
dc.contributor.authorGarcia, Lorena
dc.contributor.authorDiaz-Araya, Guillermo
dc.contributor.authorMorselli, Eugenia
dc.contributor.authorFerdous, Anwarul
dc.contributor.authorConway, Simon J.
dc.contributor.authorSadek, Hesham A.
dc.contributor.authorGillette, Thomas G.
dc.contributor.authorLavandero, Sergio
dc.contributor.authorHill, Joseph A.
dc.date.accessioned2025-01-23T21:14:34Z
dc.date.available2025-01-23T21:14:34Z
dc.date.issued2019
dc.description.abstractBACKGROUND: The primary cilium is a singular cellular structure that extends from the surface of many cell types and plays crucial roles in vertebrate development, including that of the heart. Whereas ciliated cells have been described in developing heart, a role for primary cilia in adult heart has not been reported. This, coupled with the fact that mutations in genes coding for multiple ciliary proteins underlie polycystic kidney disease, a disorder with numerous cardiovascular manifestations, prompted us to identify cells in adult heart harboring a primary cilium and to determine whether primary cilia play a role in disease-related remodeling.
dc.description.abstractMETHODS: Histological analysis of cardiac tissues from C57BL/6 mouse embryos, neonatal mice, and adult mice was performed to evaluate for primary cilia. Three injury models (apical resection, ischemia/reperfusion, and myocardial infarction) were used to identify the location and cell type of ciliated cells with the use of antibodies specific for cilia (acetylated tubulin, gamma-tubulin, polycystin [PC] 1, PC2, and KIF3A), fibroblasts (vimentin, a-smooth muscle actin, and fibroblast-specific protein-1), and cardiomyocytes (a-actinin and troponin I). A similar approach was used to assess for primary cilia in infarcted human myocardial tissue. We studied mice silenced exclusively in myofibroblasts for PC1 and evaluated the role of PC1 in fibrogenesis in adult rat fibroblasts and myofibroblasts.
dc.description.abstractRESULTS: We identified primary cilia in mouse, rat, and human heart, specifically and exclusively in cardiac fibroblasts. Ciliated fibroblasts are enriched in areas of myocardial injury. Transforming growth factor ss-1 signaling and SMAD3 activation were impaired in fibroblasts depleted of the primary cilium. Extracellular matrix protein levels and contractile function were also impaired. In vivo, depletion of PC1 in activated fibroblasts after myocardial infarction impaired the remodeling response.
dc.description.abstractCONCLUSIONS: Fibroblasts in the neonatal and adult heart harbor a primary cilium. This organelle and its requisite signaling protein, PC1, are required for critical elements of fibrogenesis, including transforming growth factor ss-1-SMAD3 activation, production of extracellular matrix proteins, and cell contractility. Together, these findings point to a pivotal role of this organelle, and PC1, in disease-related pathological cardiac remodeling and suggest that some of the cardiovascular manifestations of autosomal dominant polycystic kidney disease derive directly from myocardium-autonomous abnormalities.
dc.fuente.origenWOS
dc.identifier.doi10.1161/CIRCULATIONAHA.117.028752
dc.identifier.eissn1524-4539
dc.identifier.issn0009-7322
dc.identifier.urihttps://doi.org/10.1161/CIRCULATIONAHA.117.028752
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101047
dc.identifier.wosidWOS:000468397500013
dc.issue.numero20
dc.language.isoen
dc.pagina.final2357
dc.pagina.inicio2342
dc.revistaCirculation
dc.rightsacceso restringido
dc.subjectcilia
dc.subjectfibrosis
dc.subjectfibroblasts
dc.subjectmyocardial infarction
dc.subjectPKD1 protein
dc.subjectTGF-beta
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleFibroblast Primary Cilia Are Required for Cardiac Fibrosis
dc.typeartículo
dc.volumen139
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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