Mechanism of Crosstalk between m6A Modification and Epigenetic Regulation
Crosstalk ID
M6ACROT03099
[1]
m6A modification pri-rRNA pri-rRNA METTL14 Methylation : m6A sites Direct Inhibition Histone modification H3K9me3 SUV39H2 Downstream Gene
m6A Modification:
m6A Regulator Methyltransferase-like 14 (METTL14) WRITER
m6A Target pri-rRNA
Epigenetic Regulation that have Cross-talk with This m6A Modification:
Epigenetic Regulation Type Histone modification (HistMod)
Epigenetic Regulator Histone-lysine N-methyltransferase SUV39H2 (SUV39H2) WRITER View Details
Regulated Target Histone H3 lysine 9 trimethylation (H3K9me3) View Details
Crosstalk Relationship m6A  →  Histone modification Inhibition
Crosstalk Mechanism m6A modification directly impacts histone modification through recruiting histone-associated enzymes
Crosstalk Summary SUV39H1/H2 protein, the methyltransferases catalyzing Histone H3 lysine 9 trimethylation (H3K9me3) were dramatically elevated in METTL3/METTL14 deficient cells, which causes an accumulation and infiltration of H3K9me3 across the whole nucleolus and impairs the LLPS. Mechanistically, METTL3/METTL14 complex serves as an essential adapter for CRL4 E3 ubiquitin ligase targeting SUV39H1/SUV39H2 for polyubiquitination and proteasomal degradation and therefore prevents H3K9me3 accumulation in nucleoli.
References
Ref 1 METTL3/METTL14 maintain human nucleoli integrity by mediating SUV39H1/H2 degradation. Nat Commun. 2024 Aug 21;15(1):7186. doi: 10.1038/s41467-024-51742-7.