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DNA Methylation of Alternative Promoters Directs Tissue Specific Expression of Epac2 Isoforms
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
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2013 (English)In: PLoS ONE, ISSN 1932-6203, Vol. 8, no 7, e67925- p.Article in journal (Refereed) Published
Abstract [en]

Epac 1 and Epac 2 (Epac1/2; exchange factors directly activated by cAMP) are multidomain proteins that mediate cellular responses upon activation by the signaling molecule cAMP. Epac1 is ubiquitously expressed, whereas Epac2 exhibits a restricted expression pattern. The gene encoding Epac2 gives rise to at least three protein isoforms (Epac2A, Epac2B and Epac2C) that exhibit confined tissue and cell specific expression profiles. Here, we describe alternative promoter usage for the different isoforms of Epac2, and demonstrate that the activity of these promoters depend on the DNA methylation status. Bisulfite sequencing demonstrated that the level of methylation of the promoters in different tissues correlates with Epac2 isoform expression. The presented data indicate that the tissue-specific expression of the Epac2 isoforms is epigenetically regulated, and identify tissue-specific differentially methylated promoter regions within the Epac2 locus that are essential for its transcriptional control.

Place, publisher, year, edition, pages
2013. Vol. 8, no 7, e67925- p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-209493DOI: 10.1371/journal.pone.0067925ISI: 000323350700061OAI: diva2:658197
Available from: 2013-10-21 Created: 2013-10-21 Last updated: 2013-10-21Bibliographically approved

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Xu, YunjianJakobsson, IdaTengholm, Anders
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