Functional interaction between autophagy and ciliogenesis.

Functional interaction between autophagy and ciliogenesis.
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DOI:
10.1038/nature12639
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发表时间:
2013-10-10
期刊:
影响因子:
64.8
通讯作者:
Cuervo, Ana Maria
Cuervo, Ana Maria
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Pampliega, Olatz;Orhon, Idil;Patel, Bindi;Sridhar, Sunandini;Diaz-Carretero, Antonio;Beau, Isabelle;Codogno, Patrice;Satir, Birgit H.;Satir, Peter;Cuervo, Ana Maria

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Nutrient deprivation is a stimulus shared by both autophagy and the formation of primary cilia. The recently discovered role of primary cilia in nutrient sensing and signaling motivated us to explore the possible functional interactions between this signaling hub and autophagy. Here we show that part of the molecular machinery involved in ciliogenesis also participates in the early steps of the autophagic process. Signaling from the cilia, such as that from the Hedgehog pathway, induces autophagy by acting directly on essential autophagy-related proteins strategically located in the base of the cilium by ciliary trafficking proteins. While abrogation of ciliogenesis partially inhibits autophagy, blockage of autophagy enhances primary cilia growth and cilia-associated signaling during normal nutritional conditions. We propose that basal autophagy regulates ciliary growth through the degradation of proteins required for intraflagellar transport. Compromised ability to activate the autophagic response may underlie the basis of some common ciliopathies.
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