Retinoic acid can block differentiation of the myocardium after heart specification

Thomas A. Drysdale, Kristin D. Patterson, Margaret Saha, Paul A Krieg

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

While a number of transcription factors that are likely to play a role in cardiac differentiation have recently been described, the signals that lead to the expression of these factors remains poorly understood. Here we report that exposure of Xenopus embryos to continuous low levels of all- trans retinoic acid (RA), starting at the time of neural fold closure, blocks expression of myocardial differentiation markers. The development of the remainder of the embryo is relatively normal, suggesting that retinoic acid can act rather specifically on myocardial precursors. Indeed, the pattern of endocardial gene expression appears to remain unaffected by RA treatment. Although RA blocks myocardial gene expression, a superficially normal heart tube forms. The heart tube, however, fails to loop during subsequent development and never forms beating tissue. The effect of RA treatment on expression of myocardial genes is developmental stage dependent, since no influence is observed after myocardial differentiation has commenced. These data indicate that a vital component of the myocardial determination pathway is sensitive to retinoid signaling.

Original languageEnglish (US)
Pages (from-to)205-215
Number of pages11
JournalDevelopmental Biology
Volume188
Issue number2
DOIs
StatePublished - Aug 15 1997
Externally publishedYes

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Tretinoin
Myocardium
Gene Expression
Developmental Genes
Neural Crest
Differentiation Antigens
Retinoids
Xenopus
Embryonic Development
Transcription Factors
Embryonic Structures

ASJC Scopus subject areas

  • Developmental Biology

Cite this

Retinoic acid can block differentiation of the myocardium after heart specification. / Drysdale, Thomas A.; Patterson, Kristin D.; Saha, Margaret; Krieg, Paul A.

In: Developmental Biology, Vol. 188, No. 2, 15.08.1997, p. 205-215.

Research output: Contribution to journalArticle

Drysdale, Thomas A. ; Patterson, Kristin D. ; Saha, Margaret ; Krieg, Paul A. / Retinoic acid can block differentiation of the myocardium after heart specification. In: Developmental Biology. 1997 ; Vol. 188, No. 2. pp. 205-215.
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