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2016 ; 7
(ä): 13508
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Autophagy controls centrosome number by degrading Cep63
#MMPMID27869116
Watanabe Y
; Honda S
; Konishi A
; Arakawa S
; Murohashi M
; Yamaguchi H
; Torii S
; Tanabe M
; Tanaka S
; Warabi E
; Shimizu S
Nat Commun
2016[Nov]; 7
(ä): 13508
PMID27869116
show ga
Centrosome number is associated with the chromosome segregation and genomic
stability. The ubiquitin-proteasome system is considered to be the main regulator
of centrosome number. However, here we show that autophagy also regulates the
number of centrosomes. Autophagy-deficient cells carry extra centrosomes. The
autophagic regulation of centrosome number is dependent on a centrosomal protein
of 63 (Cep63) given that cells lacking autophagy contain multiple Cep63 dots that
are engulfed and digested by autophagy in wild-type cells, and that the
upregulation of Cep63 increases centrosome number. Cep63 is recruited to
autophagosomes via interaction with p62, a molecule crucial for selective
autophagy. In vivo, hematopoietic cells from autophagy-deficient and p62(-/-)
mice also contained multiple centrosomes. These results indicate that autophagy
controls centrosome number by degrading Cep63.
|*Autophagy
[MESH]
|*Centrosome
[MESH]
|Animals
[MESH]
|Autophagy-Related Protein 5/metabolism
[MESH]
|Autophagy-Related Protein 7/genetics/metabolism
[MESH]