AP-4 vesicles contribute to spatial control of autophagy via RUSC-dependent peripheral delivery of ATG9A.
AP-4 vesicles contribute to spatial control of autophagy via RUSC-dependent peripheral delivery of ATG9A.
复制标题
DOI:
10.1038/s41467-018-06172-7
复制
发表时间:
2018-09-27
影响因子:
16.6
通讯作者:
Borner GHH
中科院分区:
文献类型:
--
作者:
Davies AK;Itzhak DN;Edgar JR;Archuleta TL;Hirst J;Jackson LP;Robinson MS;Borner GHH
Adaptor protein 4 (AP-4) is an ancient membrane trafficking complex, whose function has largely remained elusive. In humans, AP-4 deficiency causes a severe neurological disorder of unknown aetiology. We apply unbiased proteomic methods, including ‘Dynamic Organellar Maps’, to find proteins whose subcellular localisation depends on AP-4. We identify three transmembrane cargo proteins, ATG9A, SERINC1 and SERINC3, and two AP-4 accessory proteins, RUSC1 and RUSC2. We demonstrate that AP-4 deficiency causes missorting of ATG9A in diverse cell types, including patient-derived cells, as well as dysregulation of autophagy. RUSC2 facilitates the transport of AP-4-derived, ATG9A-positive vesicles from the trans-Golgi network to the cell periphery. These vesicles cluster in close association with autophagosomes, suggesting they are the “ATG9A reservoir” required for autophagosome biogenesis. Our study uncovers ATG9A trafficking as a ubiquitous function of the AP-4 pathway. Furthermore, it provides a potential molecular pathomechanism of AP-4 deficiency, through dysregulated spatial control of autophagy. Adaptor protein complex 4 (AP-4) deficiency causes a severe neurological disorder via an unknown mechanism. Here, the authors reveal cargo and machinery of the AP-4 transport pathway, and propose that AP-4 mediates spatial regulation of autophagy through peripheral delivery of ATG9A.
登录
查看更多内容
影响因子:
13.9
作者:
Blackstone C
通讯作者:
Blackstone C
影响因子:
8.8
作者:
Goodwin JM;Dowdle WE;DeJesus R;Wang Z;Bergman P;Kobylarz M;Lindeman A;Xavier RJ;McAllister G;Nyfeler B;Hoffman G;Murphy LO
通讯作者:
Murphy LO
影响因子:
4.5
作者:
De Pace, Raffaella;Skirzewski, Miguel;Bonifacino, Juan S.
通讯作者:
Bonifacino, Juan S.
影响因子:
3.3
作者:
Borner GH;Hein MY;Hirst J;Edgar JR;Mann M;Robinson MS
通讯作者:
Robinson MS
影响因子:
4.4
作者:
Blumkin, Lubov;Lerman-Sagie, Tally;Leshinsky-Silver, Esther
通讯作者:
Leshinsky-Silver, Esther