Chtop (Chromatin target of Prmt1) auto-regulates its expression level via intron retention and nonsense-mediated decay of its own mRNA.
Chtop (Chromatin target of Prmt1) auto-regulates its expression level via intron retention and nonsense-mediated decay of its own mRNA.
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DOI:
10.1093/nar/gkw831
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发表时间:
2016-11-16
影响因子:
14.9
通讯作者:
Takahashi N
中科院分区:
文献类型:
--
作者:
Izumikawa K;Yoshikawa H;Ishikawa H;Nobe Y;Yamauchi Y;Philipsen S;Simpson RJ;Isobe T;Takahashi N
Chtop (chromatin target of Prmt1) regulates various aspects of gene expression including transcription and mRNA export. Despite these important functions, the regulatory mechanism underlying Chtop expression remains undetermined. Using Chtop-expressing human cell lines, we demonstrate that Chtop expression is controlled via an autoregulatory negative feedback loop whereby Chtop binds its own mRNA to retain intron 2 during splicing; a premature termination codon present at the 5′ end of intron 2 leads to nonsense-mediated decay of the mRNA. We also show that Chtop interacts with exon 2 of Chtop mRNA via its arginine-glycine-rich (RG) domain, and with intron 2 via its N-terminal (N1) domain; both are required for retention of intron 2. In addition, we show that hnRNP H accelerates intron 2 splicing of Chtop mRNA in a manner dependent on Chtop expression level, suggesting that Chtop and hnRNP H regulate intron 2 retention of Chtop mRNA antagonistically. Thus, the present study provides a novel molecular mechanism by which mRNA and protein levels are constitutively regulated by intron retention.
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DOI:
10.1099/jgv.0.000503
发表时间:
2016-08
期刊:
The Journal of general virology
影响因子:
--
作者:
Schumann S;Baquero-Perez B;Whitehouse A
通讯作者:
Whitehouse A
影响因子:
1.8
作者:
HOFACKER, IL;FONTANA, W;SCHUSTER, P
通讯作者:
SCHUSTER, P
影响因子:
7.7
作者:
Sauer, Brian
通讯作者:
Sauer, Brian
影响因子:
3.5
作者:
Stoilov, P;Daoud, R;Stamm, S
通讯作者:
Stamm, S
影响因子:
2.3
作者:
Fathallah, Hassana;Taher, Ali;Atweh, George F.
通讯作者:
Atweh, George F.