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Learn MoreUsing bisulfite padlock probes, mRNA sequencing, and hydroxymethylcytosine pull-down sequencing, we show that TET2 loss particularly influences DNA methylation (5mC) and hydroxymethylation (5hmC) patterns at erythroid gene enhancers and is associated with down-regulation of erythroid gene expression in the human erythroleukemia cell line TF-1. We show that 5-Aza disproportionately induces expression of these down regulated genes in TET2KO cells and that this effect may be related to 5mC changes at erythroid gene enhancers after 5-Aza exposure. This work highlights the role of 5mC and 5hmC changes at distal regulatory elements in regulating the expression of differentiation-associated gene signatures, and sheds light on how 5-Aza may be more effective in patients harboring TET2 mutations. SOURCE: Brian Reilly (bmreilly@ucsd.edu) - Bejar Lab UC San Diego
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