Abstract:
:Understanding the processes that govern liver progenitor cell differentiation has important implications for the design of strategies targeting chronic liver diseases, whereby regeneration of liver tissue is critical. Although DNA methylation (5mC) and hydroxymethylation (5hmC) are highly dynamic during early embryonic development, less is known about their roles at later stages of differentiation. Using an in vitro model of hepatocyte differentiation, we show here that 5hmC precedes the expression of promoter 1 (P1)-dependent isoforms of HNF4A, a master transcription factor of hepatocyte identity. 5hmC and HNF4A expression from P1 are dependent on ten-eleven translocation (TET) dioxygenases. In turn, the liver pioneer factor FOXA2 is necessary for TET1 binding to the P1 locus. Both FOXA2 and TETs are required for the 5hmC-related switch in HNF4A expression. The epigenetic event identified here may be a key step for the establishment of the hepatocyte program by HNF4A.
journal_name
Stem Cell Reportsjournal_title
Stem cell reportsauthors
Ancey PB,Ecsedi S,Lambert MP,Talukdar FR,Cros MP,Glaise D,Narvaez DM,Chauvet V,Herceg Z,Corlu A,Hernandez-Vargas Hdoi
10.1016/j.stemcr.2017.05.023subject
Has Abstractpub_date
2017-07-11 00:00:00pages
264-278issue
1issn
2213-6711pii
S2213-6711(17)30230-8journal_volume
9pub_type
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