Diagenode

>>>   Click for Diagenode’s approach to COVID-19

Identification of a large protein network involved in epigenetic transmission in replicating DNA of embryonic stem cells.


Aranda S, Rutishauser D, Ernfors P

Pluripotency of embryonic stem cells (ESCs) is maintained by transcriptional activities and chromatin modifying complexes highly organized within the chromatin. Although much effort has been focused on identifying genome-binding sites, little is known on their dynamic association with chromatin across cell divisions. Here, we used a modified version of the iPOND (isolation of proteins at nascent DNA) technology to identify a large protein network enriched at nascent DNA in ESCs. This comprehensive and unbiased proteomic characterization in ESCs reveals that, in addition to the core replication machinery, proteins relevant for pluripotency of ESCs are present at DNA replication sites. In particular, we show that the chromatin remodeller HDAC1-NuRD complex is enriched at nascent DNA. Interestingly, an acute block of HDAC1 in ESCs leads to increased acetylation of histone H3 lysine 9 at nascent DNA together with a concomitant loss of methylation. Consistently, in contrast to what has been described in tumour cell lines, these chromatin marks were found to be stable during cell cycle progression of ESCs. Our results are therefore compatible with a rapid deacetylation-coupled methylation mechanism during the replication of DNA in ESCs that may participate in the preservation of pluripotency of ESCs during replication.

Tags
Bioruptor
Chromatin Shearing
Antibody
H3K4me3 (C15410003)

Share this article

Published
July, 2014

Source

Products used in this publication

  • Histone-Deacetylase-polyclonal-antibody-diagenode
    C15410003-50
    H3K4me3 Antibody

Events

  • DNA methylation workshop: Become an expert at RRBS
    Diagenode
    Oct 1-Oct 31, 2021
  • Dutch Chromatin Meeting
    Radboud UMC, Geert Grooteplein 15, 6525 EZ Nijmegen, The Netherlands, Experience center, route 292 to 307
    Nov 12, 2021
 See all events

News

 See all news


The European Regional Development Fund and Wallonia are investing in your future.

Extension of industrial buildings and new laboratories.



  ABOUT SSL CERTIFICATES

       Site map   |   Contact us   |   Conditions of sales   |   Conditions of purchase   |   Privacy policy   |   Diagenode Diagnostics