| Literature DB >> 21653610 |
Kazu Kikuchi1, Vikas Gupta, Jinhu Wang, Jennifer E Holdway, Airon A Wills, Yi Fang, Kenneth D Poss.
Abstract
Recent lineage-tracing studies have produced conflicting results about whether the epicardium is a source of cardiac muscle cells during heart development. Here, we examined the developmental potential of epicardial tissue in zebrafish during both embryonic development and injury-induced heart regeneration. We found that upstream sequences of the transcription factor gene tcf21 activated robust, epicardium-specific expression throughout development and regeneration. Cre recombinase-based, genetic fate-mapping of larval or adult tcf21(+) cells revealed contributions to perivascular cells, but not cardiomyocytes, during each form of cardiogenesis. Our findings indicate that natural epicardial fates are limited to non-myocardial cell types in zebrafish.Entities:
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Year: 2011 PMID: 21653610 PMCID: PMC3119303 DOI: 10.1242/dev.067041
Source DB: PubMed Journal: Development ISSN: 0950-1991 Impact factor: 6.868