Transcriptomics

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CRISPR induced exon skipping of beta-catenin reveals unexpected tumorigenic mutants driving distinct subtypes of liver cancer


ABSTRACT: we induce exon skipping and generate a gain-of-function of an oncogene, β-catenin, using CRISPR/Cas9 in mouse liver cells. Specifically, a single guide RNA (sgRNA) targeting exon 3 of β-catenin induces exon skipping and gain-of-function of β-catenin in mouse hepatocytes. In synergy with YAPS127A, exon skipped hepatocytes gain tumorigenic ability and are thus enriched via tumor formation. Surprisingly, characterization of the exon-skipped tumors reveals two distinct subtypes with different histological features. Remarkably, ectopic expression of two representative exon-skipped β-catenin transcripts together with YAPS127A phenocopies the two histologically distinct subtypes of liver cancer. Finally, the transcriptome sequencing analysis reveal two subtypes of liver cancer and most importantly, one subtype of the exon-skipped tumor shows features of hepatoblastoma, while the other does not. This exon skipping model reveals CRISPR/Cas9 can lead to exon-skipped transcripts with in frame coding and gain-of-functions.

ORGANISM(S): Mus musculus

PROVIDER: GSE164109 | GEO | 2021/01/01

REPOSITORIES: GEO

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