RAB31 marks and controls an ESCRT-independent exosome pathway.
RAB31 marks and controls an ESCRT-independent exosome pathway.
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RAB31 标记并控制不依赖于 ESCRT 的外泌体通路。
DOI:
10.1038/s41422-020-00409-1
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发表时间:
2021-03
期刊:
影响因子:
44.1
通讯作者:
Kang T
中科院分区:
文献类型:
--
作者:
Wei D;Zhan W;Gao Y;Huang L;Gong R;Wang W;Zhang R;Wu Y;Gao S;Kang T
Exosomes are generated within the multivesicular endosomes (MVEs) as intraluminal vesicles (ILVs) and secreted during the fusion of MVEs with the cell membrane. The mechanisms of exosome biogenesis remain poorly explored. Here we identify that RAB31 marks and controls an ESCRT-independent exosome pathway. Active RAB31, phosphorylated by epidermal growth factor receptor (EGFR), engages flotillin proteins in lipid raft microdomains to drive EGFR entry into MVEs to form ILVs, which is independent of the ESCRT (endosomal sorting complex required for transport) machinery. Active RAB31 interacts with the SPFH domain and drives ILV formation via the Flotillin domain of flotillin proteins. Meanwhile, RAB31 recruits GTPase-activating protein TBC1D2B to inactivate RAB7, thereby preventing the fusion of MVEs with lysosomes and enabling the secretion of ILVs as exosomes. These findings establish that RAB31 has dual functions in the biogenesis of exosomes: driving ILVs formation and suppressing MVEs degradation, providing an exquisite framework to better understand exosome biogenesis.
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影响因子:
64.5
作者:
Hurley JH;Boura E;Carlson LA;Różycki B
通讯作者:
Różycki B
DOI:
10.1126/science.aau6977
发表时间:
2020-02-07
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Kalluri R;LeBleu VS
通讯作者:
LeBleu VS
影响因子:
64.5
作者:
Katzmann, DJ;Babst, M;Emr, SD
通讯作者:
Emr, SD
影响因子:
14.8
作者:
Kelley LA;Mezulis S;Yates CM;Wass MN;Sternberg MJ
通讯作者:
Sternberg MJ
DOI:
10.1038/nrm.2017.107
发表时间:
2018-03
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
Hannun YA;Obeid LM
通讯作者:
Obeid LM