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Identification of a retinoic acid responsive element in the retinoic acid receptor & beta gene

Hugues de Thé 1 Maria del Mar Vivanco-Ruiz 2 Pierre Tiollais 1 Henk Stunnenberg 2 Anne Dejean 1
1 Recombinaison et expression génétique
Institut Pasteur [Paris], INSERM - Institut National de la Santé et de la Recherche Médicale : U 163, CNRS - Centre National de la Recherche Scientifique : URA 271
Abstract : Retinoic acid, the first morphogen described so far in vertebrates, is a vitamin A derivative which exerts striking effects on development and differentiation. The identification of three retinoic acid receptors as members of the nuclear receptor super-family provides an explantation for the molecular action of morphogens on gene expression. Functional analysis of the receptors requires the identification of target genes and of their cis-acting retinoic acid-responsive elements. We have previously shown that the retinoic acid receptor beta gene is transcriptionally up-regulated by retinoic acid and now report the characterization of a functional retinoic acid responsive element in the beta gene that mediates trans-activation by retinoic acid. Using deletion mapping, we have identified a 27-base pair fragment, located 59 base pairs upstream of the transcriptional start, which confers retinoic acid responsiveness on the herpes virus thymidine kinase promoter. This sequence contains a perfect direct repeat of the motif GTTCAC, which is reminiscent of the 5' half-palindrome of the thyroid and oestrogen hormone responsive elements. Specific binding of the beta protein to the retinoic acid responsive element is demonstrated and is independent of the presence of retinoic acid. Both alpha and beta receptors enhance retinoic acid response in CV1 cells, indicating that they can both act through the same DNA sequence.
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Submitted on : Thursday, May 27, 2021 - 9:13:50 AM
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Hugues de Thé, Maria del Mar Vivanco-Ruiz, Pierre Tiollais, Henk Stunnenberg, Anne Dejean. Identification of a retinoic acid responsive element in the retinoic acid receptor & beta gene. Nature, Nature Publishing Group, 1990, 343 (6254), pp.177-180. ⟨10.1038/343177a0⟩. ⟨pasteur-03238326⟩

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