The Troyer syndrome protein spartin mediates selective autophagy of lipid droplets.
The Troyer syndrome protein spartin mediates selective autophagy of lipid droplets.
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DOI:
10.1038/s41556-023-01178-w
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发表时间:
2023-08
影响因子:
21.3
通讯作者:
中科院分区:
文献类型:
--
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Lipid droplets (LDs) are crucial organelles for energy storage and lipid homeostasis. Autophagy of LDs is an important pathway for their catabolism, but the molecular mechanisms mediating LD degradation by selective autophagy (lipophagy) are unknown. Here we identify spartin as a receptor localizing to LDs and interacting with core autophagy machinery, and we show that spartin is required to deliver LDs to lysosomes for triglyceride mobilization. Mutations in SPART (encoding spartin) lead to Troyer syndrome, a form of complex hereditary spastic paraplegia. Interfering with spartin function in cultured human neurons or murine brain neurons leads to LD and triglyceride accumulation. Our identification of spartin as a lipophagy receptor, thus, suggests that impaired LD turnover contributes to Troyer syndrome development. Chung et al. identify the protein spartin, linked to Troyer syndrome, as a lipophagy receptor for lipid droplet clearance in vitro and in vivo. The data suggest that impaired lipid droplet turnover may contribute to Troyer syndrome development.
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影响因子:
16.6
作者:
Bryant P;Pozzati G;Elofsson A
通讯作者:
Elofsson A
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64.8
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Oliphant TE
影响因子:
14.8
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通讯作者:
Sternberg MJ
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12.3
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通讯作者:
Sabatini DM
DOI:
10.1073/pnas.1413706111
发表时间:
2014-10-14
影响因子:
11.1
作者:
Inloes, Jordon M.;Hsu, Ku-Lung;Cravatt, Benjamin F.
通讯作者:
Cravatt, Benjamin F.