Syntaxin 13, a genetic modifier of mutant CHMP2B in frontotemporal dementia, is required for autophagosome maturation.
Syntaxin 13, a genetic modifier of mutant CHMP2B in frontotemporal dementia, is required for autophagosome maturation.
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DOI:
10.1016/j.molcel.2013.08.041
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发表时间:
2013-10-24
期刊:
影响因子:
16
通讯作者:
Gao, Fen-Biao
中科院分区:
文献类型:
--
作者:
Lu, Yubing;Zhang, Zhijun;Sun, Danqiong;Sweeney, Sean T.;Gao, Fen-Biao
Phagophore maturation is a key step in the macroautophagy pathway, which is critical in many important physiological and pathological processes. Here we identified Drosophila N-ethylmaleimide-sensitive fusion protein 2 (dNSF2) and soluble NSF attachment protein (Snap) as strong genetic modifiers of toxicity caused by mutant CHMP2B, an ESCRT-III component that causes frontotemporal dementia and autophagosome accumulation. Among several SNARE genes, Drosophila syntaxin 13 (syx13) exhibited a strong genetic interaction with mutant CHMP2B. Knockdown of syntaxin 13 (STX13) or its binding partner Vti1a in mammalian cells caused LC3-positive puncta to accumulate and blocks autophagic flux. STX13 was present on LC3-positive phagophores induced by rapamycin and was highly enriched on multilamellar structures induced by dysfunctional ESCRT-III. Loss of STX13 also caused the accumulation of Atg5-positive puncta and the formation of multilamellar structures. These results suggest STX13 is a genetic modifier of ESCRT-III dysfunction and participates in the maturation of phagophores into closed autophagosomes.
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DOI:
10.1038/nrm2937
发表时间:
2010-08
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
影响因子:
7.8
作者:
Darsow, T;Rieder, SE;Emr, SD
通讯作者:
Emr, SD
影响因子:
3.5
作者:
Urwin H;Authier A;Nielsen JE;Metcalf D;Powell C;Froud K;Malcolm DS;Holm I;Johannsen P;Brown J;Fisher EM;van der Zee J;Bruyland M;FReJA Consortium;Van Broeckhoven C;Collinge J;Brandner S;Futter C;Isaacs AM
通讯作者:
Isaacs AM
DOI:
10.1073/pnas.0903134106
发表时间:
2009-07-21
影响因子:
11.1
作者:
Ahmad, S. Tariq;Sweeney, Sean T.;Gao, Fen-Biao
通讯作者:
Gao, Fen-Biao
影响因子:
5.3
作者:
Metcalf, Daniel J.;Garcia-Arencibia, Moises;Hochfeld, Warren E.;Rubinsztein, David C.
通讯作者:
Rubinsztein, David C.