Document Detail


CSN5/Jab1 controls multiple events in the mammalian cell cycle.
MedLine Citation:
PMID:  20974137     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The COP9 signalosome (CSN) complex is critical for mammalian cell proliferation and survival, but it is not known how the CSN affects the cell cycle. In this study, MEFs lacking CSN5/Jab1 were generated using a CRE-flox system. MEFs ceased to proliferate upon elimination of CSN5/Jab1. Rescue experiments indicated that the JAMM domain of CSN5/Jab1 was essential. CSN5/Jab1-elimination enhanced the neddylation of cullins 1 and 4 and altered the expression of many factors including cyclin E and p53. CSN5/Jab1-elimination inhibited progression of the cell cycle at multiple points, seemed to initiate p53-independent senescence and increased the ploidy of cells. Thus, CSN5/Jab1 controls different events of the cell cycle, preventing senescence and endocycle as well as the proper progression of the somatic cell cycle.
Authors:
Akihiro Yoshida; Noriko Yoneda-Kato; Martina Panattoni; Ruggero Pardi; Jun-ya Kato
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-10-26
Journal Detail:
Title:  FEBS letters     Volume:  584     ISSN:  1873-3468     ISO Abbreviation:  FEBS Lett.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-15     Completed Date:  2010-12-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0155157     Medline TA:  FEBS Lett     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  4545-52     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
Affiliation:
Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan.
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MeSH Terms
Descriptor/Qualifier:
Alleles
Animals
Cell Cycle*
Cell Cycle Proteins / metabolism
Cell Proliferation
Fibroblasts / cytology,  metabolism
Gene Knockdown Techniques
Gene Silencing
Genetic Loci / genetics
HEK293 Cells
Humans
Intracellular Signaling Peptides and Proteins / chemistry,  deficiency,  genetics,  metabolism*
Mice
Peptide Hydrolases / chemistry,  deficiency,  genetics,  metabolism*
Protein Structure, Tertiary
Tumor Suppressor Protein p53 / metabolism
Chemical
Reg. No./Substance:
0/Cell Cycle Proteins; 0/Intracellular Signaling Peptides and Proteins; 0/Tumor Suppressor Protein p53; EC 3.4.-/Peptide Hydrolases; EC 3.4.-.-/Cops5 protein, mouse

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