Recent insights on the role and regulation of retinoic acid signaling during epicardial development

S Wang, AR Moise - genesis, 2019 - Wiley Online Library
genesis, 2019Wiley Online Library
The vitamin A metabolite, retinoic acid, carries out essential and conserved roles in
vertebrate heart development. Retinoic acid signals via retinoic acid receptors
(RAR)/retinoid X receptors (RXRs) heterodimers to induce the expression of genes that
control cell fate specification, proliferation, and differentiation. Alterations in retinoic acid
levels are often associated with congenital heart defects. Therefore, embryonic levels of
retinoic acid need to be carefully regulated through the activity of enzymes, binding proteins …
Abstract
The vitamin A metabolite, retinoic acid, carries out essential and conserved roles in vertebrate heart development. Retinoic acid signals via retinoic acid receptors (RAR)/retinoid X receptors (RXRs) heterodimers to induce the expression of genes that control cell fate specification, proliferation, and differentiation. Alterations in retinoic acid levels are often associated with congenital heart defects. Therefore, embryonic levels of retinoic acid need to be carefully regulated through the activity of enzymes, binding proteins and transporters involved in vitamin A metabolism. Here, we review evidence of the complex mechanisms that control the fetal uptake and synthesis of retinoic acid from vitamin A precursors. Next, we highlight recent evidence of the role of retinoic acid in orchestrating myocardial compact zone growth and coronary vascular development.
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