Rewired m⁶A epitranscriptomic networks link mutant p53 to neoplastic transformation.

ABSTRACT: N6-methyladenosine (m⁶A), one of the most prevalent mRNA modifications in eukaryotes, plays a critical role in modulating both biological and pathological processes. However, it is unknown whether mutant p53 neomorphic oncogenic functions exploit dysregulation of m⁶A epitranscriptomic networks. Here, we investigate Li-Fraumeni syndrome (LFS)-associated neoplastic transformation driven by mutant p53 in iPSC-derived astrocytes, the cell-of-origin of gliomas. We find that mutant p53 but not wild-type (WT) p53 physically interacts with SVIL to recruit the H3K4me3 methyltransferase MLL1 to activate the expression of m⁶A reader YTHDF2, culminating in an oncogenic phenotype. Aberrant YTHDF2 upregulation markedly hampers expression of multiple m⁶A-marked

SUBMITTER: Xu A 

PROVIDER: S-EPMC10042811 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature