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The STX17-SNAP47-VAMP7/VAMP8 complex is the default SNARE complex mediating autophagosome-lysosome fusion

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收录情况: ◇ SCIE ◇ 统计源期刊 ◇ CSCD-C ◇ 卓越:领军期刊

单位: [1]Huazhong Univ Sci & Technol, Tongji Med Coll, Sch Basic Med, Wuhan, Hubei, Peoples R China [2]Huazhong Univ Sci & Technol, State Key Lab Diag & Treatment Severe Zoonost Infe, Wuhan, Hubei, Peoples R China [3]Huazhong Univ Sci & Technol, Coll Life Sci & Technol, Key Lab Mol Biophys, Minist Educ, Wuhan, Hubei, Peoples R China [4]Huazhong Univ Sci & Technol, Tongji Hosp, Tongji Med Coll, Dept Obstet & Gynecol, Wuhan, Hubei, Peoples R China [5]Huazhong Univ Sci & Technol, Cell Architecture Res Ctr, Wuhan, Hubei, Peoples R China
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Autophagosome-lysosome fusion mediated by SNARE complexes is an essential step in autophagy. Two SNAP29-containing SNARE complexes have been extensively studied in starvation-induced bulk autophagy, while the relevant SNARE complexes in other types of autophagy occurring under non-starvation conditions have been overlooked. Here, we found that autophagosome-lysosome fusion in selective autophagy under non-starvation conditions does not require SNAP29-containing SNARE complexes, but requires the STX17-SNAP47-VAMP7/VAMP8 SNARE complex. Further, the STX17-SNAP47-VAMP7/VAMP8 SNARE complex also functions in starvation-induced autophagy. SNAP47 is recruited to autophagosomes following concurrent detection of ATG8s and PI(4,5)P2 via its Pleckstrin homology domain. By contrast, SNAP29-containing SNAREs are excluded from selective autophagy due to inactivation by O-GlcNAcylation under non-starvation conditions. These findings depict a previously unknown, default SNARE complex responsible for autophagosome-lysosome fusion in both selective and bulk autophagy, which could guide research and therapeutic development in autophagy-related diseases.

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出版当年[2023]版:
大类 | 1 区 生物学
小类 | 1 区 细胞生物学
最新[2025]版:
大类 | 1 区 生物学
小类 | 1 区 细胞生物学
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出版当年[2022]版:
Q1 CELL BIOLOGY
最新[2024]版:
Q1 CELL BIOLOGY

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第一作者单位: [1]Huazhong Univ Sci & Technol, Tongji Med Coll, Sch Basic Med, Wuhan, Hubei, Peoples R China [2]Huazhong Univ Sci & Technol, State Key Lab Diag & Treatment Severe Zoonost Infe, Wuhan, Hubei, Peoples R China
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通讯机构: [1]Huazhong Univ Sci & Technol, Tongji Med Coll, Sch Basic Med, Wuhan, Hubei, Peoples R China [2]Huazhong Univ Sci & Technol, State Key Lab Diag & Treatment Severe Zoonost Infe, Wuhan, Hubei, Peoples R China [5]Huazhong Univ Sci & Technol, Cell Architecture Res Ctr, Wuhan, Hubei, Peoples R China
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