Skip to Main content Skip to Navigation
Journal articles

Msx1 cre ERT 2 knock-In allele: A useful tool to target embryonic and adult cardiac valves

Abstract : Heart valve development begins with the endothelial-to-mesenchymal transition (EMT) of endo-cardial cells. Although lineage studies have demonstrated contributions from cardiac neural crest and epicardium to semilunar and atrioventricular (AV) valve formation, respectively, most valve mesenchyme derives from the endocardial EMT. Specific Cre mouse lines for fate-mapping analyses of valve endocardial cells are limited. Msx1 displayed expression in AV canal endocardium and cushion mesenchyme between E9.5 and E11.5, when EMT is underway. Additionally, previous studies have demonstrated that deletion of Msx1 and its paralog Msx2 results in hypoplastic AV cushions and impaired endocardial signaling. A knock-in tamoxifen-inducible Cre line was recently generated (Msx1 CreERT2) and characterized during embryonic development and after birth, and was shown to recapit-ulate the endogenous Msx1 expression pattern. Here, we further analyze this knock-in allele and track the Msx1-expressing cells and their descendants during cardiac development with a particular focus on their contribution to the valves and their precursors. Thus, Msx1 CreERT2 mice represent a useful model for lineage tracing and conditional gene manipulation of endocardial and mesenchymal cushion cells essential to understand mechanisms of valve development and remodeling.
Document type :
Journal articles
Complete list of metadatas

Cited literature [20 references]  Display  Hide  Download

https://hal-amu.archives-ouvertes.fr/hal-02545043
Contributor : Valérie Gall <>
Submitted on : Tuesday, April 21, 2020 - 2:27:37 PM
Last modification on : Saturday, October 3, 2020 - 3:28:26 AM

Identifiers

Citation

Tania Papoutsi, Gaelle Odelin, Thomas Moore-Morris, Michel Puceat, José Luis de la Pompa, et al.. Msx1 cre ERT 2 knock-In allele: A useful tool to target embryonic and adult cardiac valves. Genesis, Wiley-Blackwell, 2015, 53 (5), pp.337-345. ⟨10.1002/dvg.22856⟩. ⟨hal-02545043⟩

Share

Metrics

Record views

97

Files downloads

125