|  Help  |  About  |  Contact Us

Publication : The first murine zygotic transcription is promiscuous and uncoupled from splicing and 3' processing.

First Author  Abe K Year  2015
Journal  EMBO J Volume  34
Issue  11 Pages  1523-37
PubMed ID  25896510 Mgi Jnum  J:222615
Mgi Id  MGI:5645141 Doi  10.15252/embj.201490648
Citation  Abe K, et al. (2015) The first murine zygotic transcription is promiscuous and uncoupled from splicing and 3' processing. EMBO J 34(11):1523-37
abstractText  Initiation of zygotic transcription in mammals is poorly understood. In mice, zygotic transcription is first detected shortly after pronucleus formation in 1-cell embryos, but the identity of the transcribed loci and mechanisms regulating their expression are not known. Using total RNA-Seq, we have found that transcription in 1-cell embryos is highly promiscuous, such that intergenic regions are extensively expressed and thousands of genes are transcribed at comparably low levels. Striking is that transcription can occur in the absence of defined core-promoter elements. Furthermore, accumulation of translatable zygotic mRNAs is minimal in 1-cell embryos because of inefficient splicing and 3' processing of nascent transcripts. These findings provide novel insights into regulation of gene expression in 1-cell mouse embryos that may confer a protective mechanism against precocious gene expression that is the product of a relaxed chromatin structure present in 1-cell embryos. The results also suggest that the first zygotic transcription itself is an active component of chromatin remodeling in 1-cell embryos.
Quick Links:
 
Quick Links:
 

Expression

Publication --> Expression annotations

 

Other

9 Bio Entities

Trail: Publication

0 Expression