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http://purl.uniprot.org/citations/28556366http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
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Background

Bicuspid aortic valve (BAV) disease is the most common congenital heart defect, affecting 0.5-1.2% of the population and causing significant morbidity and mortality. Only a few genes have been identified in pedigrees, and no single gene model explains BAV inheritance, thus supporting a complex genetic network of interacting genes. However, patients with rare syndromic diseases that stem from alterations in the structure and function of primary cilia ("ciliopathies") exhibit BAV as a frequent cardiovascular finding, suggesting primary cilia may factor broadly in disease etiology.

Results

Our data are the first to demonstrate that primary cilia are expressed on aortic valve mesenchymal cells during embryonic development and are lost as these cells differentiate into collagen-secreting fibroblastic-like cells. The function of primary cilia was tested by genetically ablating the critical ciliogenic gene Ift88. Loss of Ift88 resulted in abrogation of primary cilia and increased fibrogenic extracellular matrix (ECM) production. Consequentially, stratification of ECM boundaries normally present in the aortic valve were lost and a highly penetrant BAV phenotype was evident at birth.

Conclusions

Our data support cilia as a novel cellular mechanism for restraining ECM production during aortic valve development and broadly implicate these structures in the etiology of BAV disease in humans. Developmental Dynamics 246:625-634, 2017. © 2017 Wiley Periodicals, Inc."xsd:string
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http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/author"Guo L."xsd:string
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/author"Brooks B."xsd:string
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http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/author"Lipschutz J.H."xsd:string
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/author"Fulmer D."xsd:string
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/author"Norris R.A."xsd:string
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http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/author"Peterson N."xsd:string
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/author"Swanson P."xsd:string
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/date"2017"xsd:gYear
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/name"Dev Dyn"xsd:string
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/pages"625-634"xsd:string
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/title"A role for primary cilia in aortic valve development and disease."xsd:string
http://purl.uniprot.org/citations/28556366http://purl.uniprot.org/core/volume"246"xsd:string
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