Axonal autophagosomes recruit dynein for retrograde transport through fusion with late endosomes.
Axonal autophagosomes recruit dynein for retrograde transport through fusion with late endosomes.
复制标题
轴突自噬体通过融合与晚期内体募集动力蛋白进行逆行转运。
DOI:
10.1083/jcb.201412046
复制
发表时间:
2015-05-11
期刊:
影响因子:
--
通讯作者:
Sheng ZH
中科院分区:
文献类型:
--
作者:
Cheng XT;Zhou B;Lin MY;Cai Q;Sheng ZH
Late endosome-loaded dynein–snapin complexes drive amphisome retrograde transport upon fusion of autophagosomes with late endosomes in distal axons. Efficient degradation of autophagic vacuoles (AVs) via lysosomes is an important cellular homeostatic process. This is particularly challenging for neurons because mature acidic lysosomes are relatively enriched in the soma. Although dynein-driven retrograde transport of AVs was suggested, a fundamental question remains how autophagosomes generated at distal axons acquire dynein motors for retrograde transport toward the soma. In this paper, we demonstrate that late endosome (LE)–loaded dynein–snapin complexes drive AV retrograde transport in axons upon fusion of autophagosomes with LEs into amphisomes. Blocking the fusion with syntaxin17 knockdown reduced recruitment of dynein motors to AVs, thus immobilizing them in axons. Deficiency in dynein–snapin coupling impaired AV transport, resulting in AV accumulation in neurites and synaptic terminals. Altogether, our study provides the first evidence that autophagosomes recruit dynein through fusion with LEs and reveals a new motor–adaptor sharing mechanism by which neurons may remove distal AVs engulfing aggregated proteins and dysfunctional organelles for efficient degradation in the soma.
登录
查看更多内容
DOI:
10.1523/jneurosci.6412-10.2011
发表时间:
2011-05-25
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Lee S;Sato Y;Nixon RA
通讯作者:
Nixon RA
DOI:
10.1083/jcb.201106120
发表时间:
2012-02-20
期刊:
The Journal of cell biology
影响因子:
--
作者:
Maday S;Wallace KE;Holzbaur EL
通讯作者:
Holzbaur EL
影响因子:
4
作者:
Jäger, S;Bucci, C;Eskelinen, EL
通讯作者:
Eskelinen, EL
影响因子:
13.3
作者:
Katsumata, Kiyoshi;Nishiyama, Jun;Yuzaki, Michisuke
通讯作者:
Yuzaki, Michisuke
影响因子:
11.8
作者:
Fu, Meng-meng;Nirschl, Jeffrey J.;Holzbaur, Erika L. F.
通讯作者:
Holzbaur, Erika L. F.