Transcriptional and Chromatin Dynamics of Muscle Regeneration after Severe Trauma.

Stem Cell Reports
Authors
Abstract

Following injury, adult skeletal muscle undergoes a well-coordinated sequence of molecular and physiological events to promote repair and regeneration. However, a thorough understanding of the in vivo epigenomic and transcriptional mechanisms that control these reparative events is lacking. To address this, we monitored the in vivo dynamics of three histone modifications and coding and noncoding RNA expression throughout the regenerative process in a mouse model of traumatic muscle injury. We first illustrate how both coding and noncoding RNAs in tissues and sorted satellite cells are modified and regulated during various stages after trauma. Next, we use chromatin immunoprecipitation followed by sequencing to evaluate the chromatin state of cis-regulatory elements (promoters and enhancers) and view how these elements evolve and influence various muscle repair and regeneration transcriptional programs. These results provide a comprehensive view of the central factors that regulate muscle regeneration and underscore the multiple levels through which both transcriptional and epigenetic patterns are regulated to enact appropriate repair and regeneration.

Year of Publication
2016
Journal
Stem Cell Reports
Volume
7
Issue
5
Pages
983-997
Date Published
2016 Nov 08
ISSN
2213-6711
DOI
10.1016/j.stemcr.2016.09.009
PubMed ID
27773702
PubMed Central ID
PMC5106515
Links
Grant list
27304C0002 / ES / NIEHS NIH HHS / United States
27306C0002 / ES / NIEHS NIH HHS / United States
UL1 TR001425 / TR / NCATS NIH HHS / United States