Abstract:
:Somatic cell reprogramming by exogenous factors requires cooperation with transcriptional co-activators and co-repressors to effectively remodel the epigenetic environment. How this interplay is regulated remains poorly understood. Here, we demonstrate that NCoR/SMRT co-repressors bind to pluripotency loci to create a barrier to reprogramming with the four Yamanaka factors (OCT4, SOX2, KLF4 and c-MYC), and consequently, suppressing NCoR/SMRT significantly enhances reprogramming efficiency and kinetics. The core epigenetic subunit of the NCoR/SMRT complex, histone deacetylase 3 (HDAC3), contributes to the effects of NCoR/SMRT by inducing histone deacetylation at pluripotency loci. Among the Yamanaka factors, recruitment of NCoR/SMRT-HDAC3 to genomic loci is mostly facilitated by c-MYC. Hence, we describe how c-MYC is beneficial for the early phase of reprogramming but deleterious later. Overall, we uncover a role for NCoR/SMRT co-repressors in reprogramming and propose a dual function for c-MYC in this process.
journal_name
Nat Cell Bioljournal_title
Nature cell biologyauthors
Zhuang Q,Li W,Benda C,Huang Z,Ahmed T,Liu P,Guo X,Ibañez DP,Luo Z,Zhang M,Abdul MM,Yang Z,Yang J,Huang Y,Zhang H,Huang D,Zhou J,Zhong X,Zhu X,Fu X,Fan W,Liu Y,Xu Y,Ward C,Khan MJ,Kanwal S,Mirza B,Tordoi
10.1038/s41556-018-0047-xsubject
Has Abstractpub_date
2018-04-01 00:00:00pages
400-412issue
4eissn
1465-7392issn
1476-4679pii
10.1038/s41556-018-0047-xjournal_volume
20pub_type
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