Transcriptomics

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Histone Demethylase KDM3A Functions As an Essential Factor for Epigenetic Control of Autophagy


ABSTRACT: Autophagy phenomenon is an essential mechanism to regulate cell homeostasis and is activated by various stresses such as nutrient starvation. It is well known that when autophagy is activated and how important components in the cytoplasm cause a series of reactions, but the regulatory mechanism of transcription in the nucleus is poorly known. Here, we identify that histone demethylase KDM3A plays a crucial role in the transcription of autophagy and lysosomal genes. Notably, KDM3A is increased in transcriptional levels in both glucose and amino acid starvation. Especially, transcriptional increase of histone demethylase in response to glucose starvation is dependent on AMP-activated protein kinase (AMPK). Furthermore, genome-wide analysis reveals that KDM3A acts as a co-activator in the expression of autophagy and lysosomal genes. Our finding of histone demethylase signaling cascade in nucleus, modulating histone demethylation signature is one of the predominant epigenetic event in autophagy activation, thereby providing the functional and mechanistic link between epigenetic control and transcriptional regulation of autophagy upon nutrient starvation.

ORGANISM(S): Mus musculus

PROVIDER: GSE103573 | GEO | 2020/08/30

REPOSITORIES: GEO

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