期刊
SCIENCE
卷 332, 期 6032, 页码 966-970出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1205407
关键词
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资金
- Univ. of Cambridge
- Cancer Research UK
- Hutchison Whampoa
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- National Institute of Biomedical Innovation
- Juvenile Diabetes Research Foundation
- NIH [DK083491]
- Cancer Research UK [19556] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [22229002, 22121505, 22770054, 23657084, 22020009] Funding Source: KAKEN
Protein synthesis and autophagic degradation are regulated in an opposite manner by mammalian target of rapamycin (mTOR), whereas under certain conditions it would be beneficial if they occurred in unison to handle rapid protein turnover. We observed a distinct cellular compartment at the trans side of the Golgi apparatus, the TOR-autophagy spatial coupling compartment (TASCC), where (auto)lysosomes and mTOR accumulated during Ras-induced senescence. mTOR recruitment to the TASCC was amino acid-and Rag guanosine triphosphatase-dependent, and disruption of mTOR localization to the TASCC suppressed interleukin-6/8 synthesis. TASCC formation was observed during macrophage differentiation and in glomerular podocytes; both displayed increased protein secretion. The spatial coupling of cells' catabolic and anabolic machinery could augment their respective functions and facilitate the mass synthesis of secretory proteins.
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