Title |
Premature termination codon readthrough in human cells occurs in novel cytoplasmic foci and requires UPF proteins
|
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Published in |
Journal of Cell Science, January 2017
|
DOI | 10.1242/jcs.198176 |
Pubmed ID | |
Authors |
Jieshuang Jia, Elisabeth Werkmeister, Sara Gonzalez-Hilarion, Catherine Leroy, Dieter C. Gruenert, Frank Lafont, David Tulasne, Fabrice Lejeune |
Abstract |
Nonsense-mutation-containing messenger ribonucleoprotein particles (mRNPs) transit through cytoplasmic foci called P-bodies before undergoing nonsense-mediated mRNA decay (NMD), a cytoplasmic mRNA surveillance mechanism. This study shows that the cytoskeleton modulates transport of nonsense-mutation-containing mRNPs to and from P-bodies. Impairing the integrity of cytoskeleton causes inhibition of NMD. The cytoskeleton thus plays a crucial role in NMD. Interestingly, disruption of actin filaments results in both inhibition of NMD and activation of readthrough, while disruption of microtubules causes only NMD inhibition. Activation of readthrough occurs concomitantly with the appearance of cytoplasmic foci containing UPF proteins and mRNAs with nonsense mutations but lacking the P-body marker DCP1a. These findings demonstrate that in human cells, readthrough occurs in novel "readthrough bodies" and requires the presence of UPF proteins. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Australia | 1 | 33% |
United States | 1 | 33% |
Unknown | 1 | 33% |
Demographic breakdown
Type | Count | As % |
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Scientists | 2 | 67% |
Members of the public | 1 | 33% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 66 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 19 | 29% |
Researcher | 16 | 24% |
Student > Master | 6 | 9% |
Student > Doctoral Student | 3 | 5% |
Professor | 3 | 5% |
Other | 7 | 11% |
Unknown | 12 | 18% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 16 | 24% |
Neuroscience | 3 | 5% |
Pharmacology, Toxicology and Pharmaceutical Science | 2 | 3% |
Immunology and Microbiology | 1 | 2% |
Other | 3 | 5% |
Unknown | 15 | 23% |