Genomics

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IGF2BP1 is a drugable, post-transcriptional super-enhancer of E2F-driven gene expression hallmark in cancer [HepG2 small RNA]


ABSTRACT: The IGF2 mRNA-binding protein 1 (IGF2BP1) is a post-transcriptional enhancer of tumor growth. However, conserved effector pathway(s) and the feasibility of targeting IGF2BP1 in cancer cells remained elusive. We demonstrate that IGF2BP1 is a conserved regulator of E2F-driven gene expression and cancer cell cycle progression. IGF2BP1 promotes positive regulators of G1/S transition by stabilizing the respective mRNAs. This regulation is 3’UTR-, miRNA- and m6A-dependent, suggesting a conserved role of m6A-enhanced cell cycle progression across cancers. IGF2BP1 stabilizes E2F-encoding mRNAs and some of their target transcripts revealing a post-transcriptional super-enhancer role of the protein in E2F-driven gene expression. The small molecule BTYNB disrupts this super-enhancer function by impairing IGF2BP1-RNA association and consequently interferes with tumor cell proliferation and tumor growth.

ORGANISM(S): Homo sapiens

PROVIDER: GSE152845 | GEO | 2020/06/20

REPOSITORIES: GEO

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