C. elegans LIN-28 controls temporal cell fate progression by regulating LIN-46 expression via the 5' UTR of lin-46 mRNA.
C. elegans LIN-28 controls temporal cell fate progression by regulating LIN-46 expression via the 5' UTR of lin-46 mRNA.
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DOI:
10.1016/j.celrep.2021.109670
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发表时间:
2021-09-07
期刊:
影响因子:
8.8
通讯作者:
Ambros V
中科院分区:
文献类型:
--
作者:
Ilbay O;Nelson C;Ambros V
Lin28/LIN-28 is a conserved RNA-binding protein that promotes proliferation and pluripotency and can be oncogenic in mammals. Mammalian Lin28 and C. elegans LIN-28 have been shown to inhibit biogenesis of the conserved cellular differentiation-promoting microRNA let-7 by directly binding to unprocessed let-7 transcripts. Lin28/LIN-28 also bind and regulate many mRNAs in diverse cell types. However, the determinants and consequences of LIN-28-mRNA interactions are not well understood. Here, we report that C. elegans LIN-28 represses the expression of LIN-46, a downstream protein in the heterochronic pathway. We find that lin-28 and sequences within the lin-46 5′ UTR are required to prevent LIN-46 expression at early larval stages. Moreover, we find that precocious LIN-46 expression caused by mutations in the lin-46 5′ UTR is sufficient to cause precocious heterochronic defects similar to those of lin-28(lf) animals. Thus, our findings demonstrate the biological importance of the regulation of individual target mRNAs by LIN-28. Ilbay et al. characterize the role of the 5′ UTR of lin-46, a heterochronic gene in C. elegans and the critical mRNA target of the widely conserved RNA-binding protein LIN-28, demonstrating the importance of the regulation of mRNAs by LIN-28 in vivo along with the conserved microRNA let-7.
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DOI:
10.1261/rna.045542.114
发表时间:
2015-05
期刊:
RNA (New York, N.Y.)
影响因子:
--
作者:
Stefani G;Chen X;Zhao H;Slack FJ
通讯作者:
Slack FJ
DOI:
10.1895/wormbook.1.5.2
发表时间:
2012-11-20
期刊:
WormBook : the online review of C. elegans biology
影响因子:
--
作者:
Blumenthal, Thomas
通讯作者:
Blumenthal, Thomas
影响因子:
4.5
作者:
Vadla B;Kemper K;Alaimo J;Heine C;Moss EG
通讯作者:
Moss EG
影响因子:
11.8
作者:
Lin, SY;Johnson, SM;Slack, FJ
通讯作者:
Slack, FJ
影响因子:
64.8
作者:
Reinhart, BJ;Slack, FJ;Ruvkun, G
通讯作者:
Ruvkun, G