AMPK contributes to autophagosome maturation and lysosomal fusion.
AMPK contributes to autophagosome maturation and lysosomal fusion.
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DOI:
10.1038/s41598-018-30977-7
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发表时间:
2018-08-23
影响因子:
4.6
通讯作者:
Park J
中科院分区:
文献类型:
--
作者:
Jang M;Park R;Kim H;Namkoong S;Jo D;Huh YH;Jang IS;Lee JI;Park J
AMP-activated protein kinase (AMPK) regulates autophagy initiation when intracellular ATP level decreases. However, the role of AMPK during autophagosome maturation is not fully understood. Here, we report that AMPK contributes to efficient autophagosome maturation and lysosomal fusion. Using CRISPR-Cas9 gene editing, we generated AMPK α1 knockout HEK293T cell lines, in which starvation-induced autophagy is impaired. Compound C, an AMPK-independent autophagy inducer, and trehalose, an mTOR-independent autophagy inducer were used to examine the role of AMPK in autophagosome maturation and lysosomal fusion. While the treatment of control cells with either compound C or trehalose induces activation of autophagosomes as well as autolysosomes, the treatment of AMPK α1 knockout cells with compound C or trehalose induces mainly activation of autophagosomes, but not autolysosomes. We demonstrate that this effect is due to interference with the fusion of autophagosomes with lysosomes in AMPK α1 knockout cells. The transient expression of AMPK α1 can rescue autophagosome maturation. These results indicate that AMPK α1 is required for efficient autophagosome maturation and lysosomal fusion.
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影响因子:
21.3
作者:
通讯作者:
--
DOI:
10.1073/pnas.1307736110
发表时间:
2013-08-06
影响因子:
11.1
作者:
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通讯作者:
Wogan, Gerald N.
影响因子:
3.7
作者:
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通讯作者:
Kwon, Taeg Kyu
影响因子:
6.5
作者:
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通讯作者:
Hsu, Yi-Te
影响因子:
7.8
作者:
Bjorkoy, Geir;Lamark, Trond;Brech, Andreas;Outzen, Heidi;Perander, Maria;Overvatn, Aud;Stenmark, Harald;Johansen, Terje
通讯作者:
Johansen, Terje