Acetyltransferase GCN5 regulates autophagy and lysosome biogenesis by targeting TFEB
Abstract: Accumulating evidence highlights the role of histone acetyltransferase GCN5 in the regulation of cell metabolism in metazoans. Here, we report that GCN5 is a negative regulator of autophagy, a lysosome‐dependent catabolic mechanism. In animal cells and Drosophila, GCN5 inhibits the biogenesis of autophagosomes and lysosomes by targeting TFEB, the master transcription factor for autophagy‐ and lysosome‐related gene expression. We show that GCN5 is a specific TFEB acetyltransferase, and acetylation by GCN5 results in the decrease in TFEB transcriptional activity. Induction of autophagy inactivates GCN5, accompanied by reduced TFEB acetylation and increased lysosome formation. We further demonstrate that acetylation at K274 and K279 disrupts the dimerization of TFEB and the binding of TFEB to its target gene promoters. In a Tau‐based neurodegenerative Drosophila model, deletion of dGcn5 improves the clearance of Tau protein aggregates and ameliorates the neurodegenerative phenotypes. Together, our results reveal GCN5 as a novel conserved TFEB regulator, and the regulatory mechanisms may be involved in autophagy‐ and lysosome‐related physiological and pathological processes.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Acetyltransferase GCN5 regulates autophagy and lysosome biogenesis by targeting TFEB ; volume:21 ; number:1 ; year:2020 ; extent:17
EMBO reports / European Molecular Biology Organization ; 21, Heft 1 (2020) (gesamt 17)
- Creator
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Wang, Yusha
Huang, Yewei
Liu, Jiaqi
Zhang, Jinna
Xu, Mingming
You, Zhiyuan
Peng, Chao
Gong, Zhefeng
Liu, Wei
- DOI
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10.15252/embr.201948335
- URN
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urn:nbn:de:101:1-2022070106424079728138
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:37 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Wang, Yusha
- Huang, Yewei
- Liu, Jiaqi
- Zhang, Jinna
- Xu, Mingming
- You, Zhiyuan
- Peng, Chao
- Gong, Zhefeng
- Liu, Wei
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