Article (Scientific journals)
Maturation of heart valve cell populations during postnatal remodeling.
Hulin, Alexia; Hortells, Luis; Gomez-Stallons, M. Victoria et al.
2019In Development (Cambridge, England), 146 (12)
Peer reviewed
 

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Keywords :
Cardiovascular science; Development; Heart valve; Single cell RNA sequencing; Valve cell lineages
Abstract :
[en] Heart valve cells mediate extracellular matrix (ECM) remodeling during postnatal valve leaflet stratification, but phenotypic and transcriptional diversity of valve cells in development is largely unknown. Single cell analysis of mouse heart valve cells was used to evaluate cell heterogeneity during postnatal ECM remodeling and leaflet morphogenesis. The transcriptomic analysis of single cells from postnatal day (P)7 and P30 murine aortic (AoV) and mitral (MV) heart valves uncovered distinct subsets of melanocytes, immune and endothelial cells present at P7 and P30. By contrast, interstitial cell populations are different from P7 to P30. P7 valve leaflets exhibit two distinct collagen- and glycosaminoglycan-expressing interstitial cell clusters, and prevalent ECM gene expression. At P30, four interstitial cell clusters are apparent with leaflet specificity and differential expression of complement factors, ECM proteins and osteogenic genes. This initial transcriptomic analysis of postnatal heart valves at single cell resolution demonstrates that subpopulations of endothelial and immune cells are relatively constant throughout postnatal development, but interstitial cell subpopulations undergo changes in gene expression and cellular functions in primordial and mature valves.
Disciplines :
Cardiovascular & respiratory systems
Author, co-author :
Hulin, Alexia ;  Université de Liège - ULiège > Cardiovascular Sciences-Cardiology
Hortells, Luis
Gomez-Stallons, M. Victoria
O'Donnell, Anna
Chetal, Kashish
Adam, Mike
Lancellotti, Patrizio  ;  Université de Liège - ULiège > Département des sciences cliniques > Cardiologie - Pathologie spéciale et réhabilitation
Oury, Cécile  ;  Université de Liège - ULiège > Cardiovascular Sciences-Cardiology
Potter, S. Steven
Salomonis, Nathan
Yutzey, Katherine E.
Language :
English
Title :
Maturation of heart valve cell populations during postnatal remodeling.
Publication date :
2019
Journal title :
Development (Cambridge, England)
ISSN :
0950-1991
eISSN :
1477-9129
Volume :
146
Issue :
12
Peer reviewed :
Peer reviewed
Commentary :
(c) 2019. Published by The Company of Biologists Ltd.
Available on ORBi :
since 27 May 2019

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