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α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [RNA-seq III]

ABSTRACT: α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [RNA-seq III]

PROVIDER: PRJNA589071 | ENA |

REPOSITORIES: ENA

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α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer

Project description:α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer

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α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [RRBS]

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α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [RNA-seq III]

Project description:Genetic-driven deregulation of the Wnt pathway is crucial but not sufficient for colorectal cancer (CRC) tumourigenesis. Here, we show that environmental glutamine restriction further augments Wnt signaling in APC mutant intestinal organoids to promote stemness and leads to adenocarcinoma formation in vivo via decreasing intracellular alpha-ketoglutarate (aKG) levels. aKG supplementation is sufficient to rescue low-glutamine induced stemness and Wnt hyperactivation. Mechanistically, we found that aKG promotes hypomethylation of DNA and histone H3K4me3, leading to an upregulation of differentiation-associated genes and downregulation of Wnt target genes, respectively. Using CRC patient-derived organoids and several in vivo CRC tumour models, we show that aKG supplementation suppresses Wnt signaling and promotes cellular differentiation, thereby significantly restricting tumour growth and extending survival. Together, our results reveal how the low glutamine metabolic microenvironment impacts Wnt signaling and identify aKG as a potent antineoplastic metabolite for potential differentiation therapy for CRC patients.

2020-03-23 | GSE140269 | GEO

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Project description:α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [methylation array]

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α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [RNA-seq I]

Project description:α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [RNA-seq I]

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α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [RNA-seq II]

Project description:α-Ketoglutarate attenuates Wnt signaling and drives differentiation in colorectal cancer [RNA-seq II]