Altered nuclear retention of mRNAs containing inverted repeats in human embryonic stem cells: functional role of a nuclear noncoding RNA.
Altered nuclear retention of mRNAs containing inverted repeats in human embryonic stem cells: functional role of a nuclear noncoding RNA.
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DOI:
10.1016/j.molcel.2009.06.027
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发表时间:
2009-08-28
期刊:
影响因子:
16
通讯作者:
Carmichael GG
中科院分区:
文献类型:
--
作者:
Chen LL;Carmichael GG
In many cells, mRNAs containing inverted repeats (Alu repeats in humans) in their 3′-untranslated regions (3′-UTRs) are inefficiently exported to the cytoplasm. Nuclear retention correlates with adenosine-to-inosine editing and is in paraspeckle-associated complexes containing the proteins p54nrb, PSF and PSP1α. We report that robust editing activity in human embryonic stem cells (hESCs), does not lead to nuclear retention. p54nrb, PSF and PSP1α are all expressed in hESCs, but paraspeckles are absent and only appear upon differentiation. Paraspeckle assembly and function depends on expression of a long nuclear-retained noncoding RNA, hNEAT1. This RNA is not expressed in hESCs, but is induced upon differentiation. Knockdown of hNEAT1 in HeLa cells results both in loss of paraspeckles and enhanced nucleocytoplasmic export of mRNAs containing inverted Alu repeats. Taken together, these results assign a biological function to a large noncoding nuclear RNA in the regulation of mRNA export.
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DOI:
10.1101/sqb.1983.048.01.050
发表时间:
1983-01-01
期刊:
COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY
影响因子:
--
作者:
HORVITZ, HR;STERNBERG, PW;ELLIS, HM
通讯作者:
ELLIS, HM
影响因子:
56.9
作者:
AMBROS, V;HORVITZ, HR
通讯作者:
HORVITZ, HR
影响因子:
4.1
作者:
Balzer, Erica;Moss, Eric G.
通讯作者:
Moss, Eric G.
影响因子:
3.3
作者:
Fox, AH;Bond, CS;Lamond, AI
通讯作者:
Lamond, AI
影响因子:
4.8
作者:
LINDSEY, LA;CROW, AJ;GARCIABLANCO, MA
通讯作者:
GARCIABLANCO, MA