The Dynein Adaptor RILP Controls Neuronal Autophagosome Biogenesis, Transport, and Clearance.
The Dynein Adaptor RILP Controls Neuronal Autophagosome Biogenesis, Transport, and Clearance.
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DOI:
10.1016/j.devcel.2020.03.011
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发表时间:
2020-04-20
影响因子:
11.8
通讯作者:
Vallee, Richard B.
中科院分区:
文献类型:
--
作者:
Khobrekar, Noopur V.;Quintremil, Sebastian;Dantas, Tiago J.;Vallee, Richard B.
Autophagy plays critical roles in neurodegeneration and development, but how this pathway is organized and regulated in neurons remains poorly understood. Here, we find that the dynein adaptor RILP is essential for retrograde transport of neuronal autophagosomes, and surprisingly, their biogenesis as well. We find that induction of autophagy by mTOR inhibition specifically up-regulates RILP expression and its localization to autophagosomes. RILP depletion or mutations in its LC3-binding LIR motifs strongly decrease autophagosome number suggesting an unexpected RILP role in autophagosome biogenesis. We find that RILP also interacts with ATG5 on isolation membranes, precluding premature dynein recruitment and autophagosome transport. RILP inhibition impedes autophagic turnover and causes p62/Sequestosome-1 aggregation. Together, our results identify an mTOR-responsive neuronal autophagy pathway, wherein RILP integrates the processes of autophagosome biogenesis and retrograde transport to control autophagic turnover. This pathway has important implications for understanding how autophagy contributes to neuronal function, development, and disease. Macroautophagy is required for neuronal homeostasis and is disregulated in several neurodevelopmental and degenerative disorders. Khobrekar et al. show that the Rab-Interacting Lysosomal Protein (RILP) controls the neuronal autophagy pathway through sequential interactions with ATG5, LC3, Rab7 and dynein to regulate autophagosome formation, transport and turnover in an mTOR-responsive mechanism.
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影响因子:
9.2
作者:
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通讯作者:
Luzio, J. Paul
影响因子:
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作者:
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DOI:
10.1038/s41580-018-0001-6
发表时间:
2018-06
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
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通讯作者:
Cuervo AM
影响因子:
21.3
作者:
通讯作者:
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DOI:
10.1083/jcb.143.7.1883
发表时间:
1998-12-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Johnston JA;Ward CL;Kopito RR
通讯作者:
Kopito RR