Individual retrotransposon integrants are differentially controlled by KZFP/KAP1-dependent histone methylation, DNA methylation and TET-mediated hydroxymethylation in naive embryonic stem cells.

ABSTRACT:

Background

The KZFP/KAP1 (KRAB zinc finger proteins/KRAB-associated protein 1) system plays a central role in repressing transposable elements (TEs) and maintaining parent-of-origin DNA methylation at imprinting control regions (ICRs) during the wave of genome-wide reprogramming that precedes implantation. In naïve murine embryonic stem cells (mESCs), the genome is maintained highly hypomethylated by a combination of TET-mediated active demethylation and lack of de novo methylation, yet KAP1 is tethered by sequence-specific KZFPs to ICRs and TEs where it recruits histone and DNA methyltransferases to impose heterochromatin formation and DNA methylation.

Results

Here, upon removing either KAP1 or the cognate KZFP, we observed rapid TET2-dependent accumulation of 5hmC at both

SUBMITTER: Coluccio A 

PROVIDER: S-EPMC6389204 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature