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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Biochim+Biophys+Acta
2016 ; 1863
(6 Pt A
): 1307-18
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Genome-wide screen identifies novel machineries required for both ciliogenesis
and cell cycle arrest upon serum starvation
#MMPMID27033521
Kim JH
; Ki SM
; Joung JG
; Scott E
; Heynen-Genel S
; Aza-Blanc P
; Kwon CH
; Kim J
; Gleeson JG
; Lee JE
Biochim Biophys Acta
2016[Jun]; 1863
(6 Pt A
): 1307-18
PMID27033521
show ga
Biogenesis of the primary cilium, a cellular organelle mediating various
signaling pathways, is generally coordinated with cell cycle exit/re-entry.
Although the dynamic cell cycle-associated profile of the primary cilium has been
largely accepted, the mechanism governing the link between ciliogenesis and cell
cycle progression has been poorly understood. Using a human genome-wide RNAi
screen, we identify genes encoding subunits of the spliceosome and proteasome as
novel regulators of ciliogenesis. We demonstrate that 1) the mRNA
processing-related hits are essential for RNA expression of molecules acting in
cilia disassembly, such as AURKA and PLK1, and 2) the ubiquitin-proteasome
systems (UPS)-involved hits are necessary for proteolysis of molecules acting in
cilia assembly, such as IFT88 and CPAP. In particular, we show that these screen
hit-associated mechanisms are crucial for both cilia assembly and cell cycle
arrest in response to serum withdrawal. Finally, our data suggest that the mRNA
processing mechanism may modulate the UPS-dependent decay of cilia assembly
regulators to control ciliary resorption-coupled cell cycle re-entry.