Embryonic lethal abnormal vision-like HuR-dependent mRNA stability regulates post-transcriptional expression of cyclin-dependent kinase inhibitor p27Kip1
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Embryonic lethal abnormal vision-like HuR-dependent mRNA stability regulates post-transcriptional expression of cyclin-dependent kinase inhibitor p27Kip1. / Ziegeler, Gudrun; Ming, Jie; Koseki, Jana C; Sevinc, Sema; Chen, Ting; Ergun, Suleyman; Qin, Xuebin; Aktas, Bertal H.
In: J BIOL CHEM, Vol. 285, No. 20, 14.05.2010, p. 15408-19.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Embryonic lethal abnormal vision-like HuR-dependent mRNA stability regulates post-transcriptional expression of cyclin-dependent kinase inhibitor p27Kip1
AU - Ziegeler, Gudrun
AU - Ming, Jie
AU - Koseki, Jana C
AU - Sevinc, Sema
AU - Chen, Ting
AU - Ergun, Suleyman
AU - Qin, Xuebin
AU - Aktas, Bertal H
PY - 2010/5/14
Y1 - 2010/5/14
N2 - The cyclin-dependent kinase inhibitor p27(Kip1) plays a critical role in regulating entry into and exit from the cell cycle. Post-transcriptional regulation of p27(Kip1) expression is of significant interest. The embryonic lethal abnormal vision (ELAV)-like RNA-binding protein HuR is thought be important for the translation of p27(Kip1), however, different reports attributed diametrically opposite roles to HuR. We report here an alternative mechanism wherein HuR regulates stability of the p27(Kip1) mRNA. Specifically, human and mouse p27(Kip1) mRNAs interact with HuR protein through multiple U-rich elements in both 5' and 3' untranslated regions (UTR). These interactions, which occur in vitro and in vivo, stabilize p27(Kip1) mRNA and play a critical role in its accumulation. Deleting HuR binding sites or knocking down HuR expression destabilizes p27(Kip1) mRNA and reduces its accumulation. We also identified a CT repeat in the 5' UTR of full-length p27(Kip1) mRNA isoforms that interact with a approximately 41-kDa protein and represses p27(Kip1) expression. This CT-rich element and diffuse elements in the 3' UTR regulate post-transcriptional expression of p27(Kip1) at the level of translation. This is the first demonstration that HuR-dependent mRNA stability and HuR-independent mRNA translation plays a critical role in the regulation of post-transcriptional p27(Kip1) expression.
AB - The cyclin-dependent kinase inhibitor p27(Kip1) plays a critical role in regulating entry into and exit from the cell cycle. Post-transcriptional regulation of p27(Kip1) expression is of significant interest. The embryonic lethal abnormal vision (ELAV)-like RNA-binding protein HuR is thought be important for the translation of p27(Kip1), however, different reports attributed diametrically opposite roles to HuR. We report here an alternative mechanism wherein HuR regulates stability of the p27(Kip1) mRNA. Specifically, human and mouse p27(Kip1) mRNAs interact with HuR protein through multiple U-rich elements in both 5' and 3' untranslated regions (UTR). These interactions, which occur in vitro and in vivo, stabilize p27(Kip1) mRNA and play a critical role in its accumulation. Deleting HuR binding sites or knocking down HuR expression destabilizes p27(Kip1) mRNA and reduces its accumulation. We also identified a CT repeat in the 5' UTR of full-length p27(Kip1) mRNA isoforms that interact with a approximately 41-kDa protein and represses p27(Kip1) expression. This CT-rich element and diffuse elements in the 3' UTR regulate post-transcriptional expression of p27(Kip1) at the level of translation. This is the first demonstration that HuR-dependent mRNA stability and HuR-independent mRNA translation plays a critical role in the regulation of post-transcriptional p27(Kip1) expression.
KW - 3' Untranslated Regions
KW - Animals
KW - Antigens, Surface
KW - Cell Cycle
KW - Cyclin-Dependent Kinase Inhibitor p27
KW - ELAV Proteins
KW - ELAV-Like Protein 1
KW - Gene Expression Regulation
KW - Humans
KW - Mice
KW - NIH 3T3 Cells
KW - RNA Processing, Post-Transcriptional
KW - RNA, Messenger
KW - RNA-Binding Proteins
KW - Journal Article
U2 - 10.1074/jbc.M110.113365
DO - 10.1074/jbc.M110.113365
M3 - SCORING: Journal article
C2 - 20332085
VL - 285
SP - 15408
EP - 15419
JO - J BIOL CHEM
JF - J BIOL CHEM
SN - 0021-9258
IS - 20
ER -