Reference: Shu WJ, et al. (2020) Old factors, new players: transcriptional regulation of autophagy. Autophagy 16(5):956-958

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Abstract


Macroautophagy/autophagy is a catabolic process that allows cells to adapt to environmental changes and maintain energy homeostasis. This multistep process is regulated at several levels, including transcriptionally regulating autophagy-related (ATG) gene expression through the action of transcription regulators. Very recently, Wen et al. and we have provided more evidence that two well-known transcription factors regulate different ATG genes to control either nonselective or selective forms of autophagy, respectively. Under nitrogen-starvation conditions, the Spt4-Spt5 complex derepresses ATG8 and ATG41 expression and upregulates bulk autophagy activity. By contrast, under glucose-starvation conditions, the Paf1 complex (the polymerase-associated factor 1 complex, Paf1C) specifically modulates expression of ATG11 and ATG32 to regulate mitophagy. These studies suggest the potential existence of other transcription regulators yet to be discovered that function in the regulation of diverse autophagy pathways.Abbreviations: AMPK: AMP-activated protein kinase; ATG: autophagy-related; NELF: negative elongation factor; Paf1C/PAF1C: polymerase-associated factor 1 complex; RNAP II: RNA polymerase II; Rpd3L: Rpd3 large complex.

Reference Type
Journal Article | Research Support, N.I.H., Extramural | Research Support, Non-U.S. Gov't
Authors
Shu WJ, Zhao MJ, Klionsky DJ, Du HN
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