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ULK3 is a key determinant of the keratinocyte self-renewal and tumorigenesis

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE183086 | GEO | 2022/10/10

REPOSITORIES: GEO

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ULK3 is a key determinant of the keratinocyte self-renewal and tumorigenesis [shULK3 SCC13]

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ULK3 is a key determinant of the keratinocyte self-renewal and tumorigenesis [shULK3 HKCs]

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The ULK3 kinase is a key determinant of keratinocyte self-renewal and tumorigenesis targeting the arginine methylome

Project description:Epigenetic mechanisms oversee epidermal homeostasis and oncogenesis. The identification of kinases controlling these processes has direct therapeutic implications. We show that ULK3 is a nuclear kinase with elevated expression levels in squamous cell carcinomas (SCCs) arising in multiple body sites, including skin and Head/Neck. ULK3 loss by gene silencing or deletion reduces proliferation and clonogenicity of human keratinocytes and SCC-derived cells and affects transcription impinging on stem cell-related and metabolism programs. Mechanistically, ULK3 directly binds and regulates the activity of two histone arginine methyltransferases, PRMT1 and PRMT5 (PRMT1/5), with ULK3 loss compromising PRMT1/5 chromatin association to specific genes and overall methylation of histone H4, a shared target of these enzymes. These findings are of translational significance, as downmodulating ULK3 by RNA interference or locked antisense nucleic acids (LNAs) blunts the proliferation and tumorigenic potential of SCC cells and promotes differentiation in two orthotopic models of skin cancer.

2022-11-14 | MTBLS5155 | MetaboLights