Abstract
Histone H3 methylation at lysine 4 (K4) is associated with euchromatic regions and is thought to be important for the transcriptional activation of genes during differentiation. In this study, we found that di- and tri-methylation of histone H3 at K4 and acetylation of histones H3 and H4 from the promoter/enhancer to the transcribed region close to the transcription initiation site of the solute carrier family 2, member 5 ( SLC2A5) gene, and its expression, were induced by differentiation of intestine-like Caco-2 cells. These effects were accompanied by contact inhibition of cell growth of these cells. Furthermore, these modifications were induced by co-treatment with a synthetic glucocorticoid hormone dexamethasone and a p44/42 mitogen-activated protein kinase inhibitor PD89059. Our results suggest that methylation of histone H3 at K4 and acetylation of histones H3 and H4 are involved in SLC2A5 gene induction associated with intestinal differentiation of Caco-2 cells.
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