Inhibition of nonsense-mediated mRNA decay (NMD) by a new chemical molecule reveals the dynamic of NMD factors in P-bodies.
Inhibition of nonsense-mediated mRNA decay (NMD) by a new chemical molecule reveals the dynamic of NMD factors in P-bodies.
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DOI:
10.1083/jcb.200611086
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发表时间:
2007-09-24
期刊:
影响因子:
--
通讯作者:
Lejeune F
中科院分区:
文献类型:
--
作者:
Durand S;Cougot N;Mahuteau-Betzer F;Nguyen CH;Grierson DS;Bertrand E;Tazi J;Lejeune F
In mammals, nonsense-mediated mRNA decay (NMD) is a quality-control mechanism that degrades mRNA harboring a premature termination codon to prevent the synthesis of truncated proteins. To gain insight into the NMD mechanism, we identified NMD inhibitor 1 (NMDI 1) as a small molecule inhibitor of the NMD pathway. We characterized the mode of action of this compound and demonstrated that it acts upstream of hUPF1. NMDI 1 induced the loss of interactions between hSMG5 and hUPF1 and the stabilization of hyperphosphorylated isoforms of hUPF1. Incubation of cells with NMDI 1 allowed us to demonstrate that NMD factors and mRNAs subject to NMD transit through processing bodies (P-bodies), as is the case in yeast. The results suggest a model in which mRNA and NMD factors are sequentially recruited to P-bodies.
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DOI:
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期刊:
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DOI:
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发表时间:
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期刊:
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影响因子:
--
作者:
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通讯作者:
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