Sequential dynein effectors regulate axonal autophagosome motility in a maturation-dependent pathway.
Sequential dynein effectors regulate axonal autophagosome motility in a maturation-dependent pathway.
复制标题
顺序动力蛋白效应器调节轴突自噬体运动的成熟依赖性途径。
DOI:
10.1083/jcb.202010179
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发表时间:
2021-07-05
期刊:
影响因子:
--
通讯作者:
Holzbaur ELF
中科院分区:
文献类型:
--
作者:
Cason SE;Carman PJ;Van Duyne C;Goldsmith J;Dominguez R;Holzbaur ELF
Neuronal autophagosomes form in the distal axon and mature via lysosomal fusion during transport to the soma. Dynein regulators JIP1, HAP1, and JIP3 function on autophagosomes depending on location and autophagosomal maturity. In this pathway, transport and maturity are tightly linked to maintain neuronal health. Autophagy is a degradative pathway required to maintain homeostasis. Neuronal autophagosomes form constitutively at the axon terminal and mature via lysosomal fusion during dynein-mediated transport to the soma. How the dynein–autophagosome interaction is regulated is unknown. Here, we identify multiple dynein effectors on autophagosomes as they transit along the axons of primary neurons. In the distal axon, JIP1 initiates autophagosomal transport. Autophagosomes in the mid-axon require HAP1 and Huntingtin. We find that HAP1 is a dynein activator, binding the dynein–dynactin complex via canonical and noncanonical interactions. JIP3 is on most axonal autophagosomes, but specifically regulates the transport of mature autolysosomes. Inhibiting autophagosomal transport disrupts maturation, and inhibiting autophagosomal maturation perturbs the association and function of dynein effectors; thus, maturation and transport are tightly linked. These results reveal a novel maturation-based dynein effector handoff on neuronal autophagosomes that is key to motility, cargo degradation, and the maintenance of axonal health.
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影响因子:
4.5
作者:
Choudhary B;Kamak M;Ratnakaran N;Kumar J;Awasthi A;Li C;Nguyen K;Matsumoto K;Hisamoto N;Koushika SP
通讯作者:
Koushika SP
DOI:
10.1016/j.str.2018.07.011
发表时间:
2018-11-06
期刊:
Structure (London, England : 1993)
影响因子:
--
作者:
Cockburn JJB;Hesketh SJ;Mulhair P;Thomsen M;O'Connell MJ;Way M
通讯作者:
Way M
影响因子:
10.5
作者:
Gassmann, Reto;Holland, Andrew J.;Desai, Arshad
通讯作者:
Desai, Arshad
影响因子:
7.8
作者:
Cavalli, V;Kujala, P;Goldstein, LSB
通讯作者:
Goldstein, LSB
影响因子:
3.3
作者:
Feng, Qingzhou;Gicking, Allison M.;Hancock, William O.
通讯作者:
Hancock, William O.