K88 acetylation of FTO increases its RNA m6A demethylation and promotes tumorigenesis
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View abstract on PubMed
Summary
This summary is machine-generated.Acetylation of FTO at lysine 88 by GCN5 enhances its RNA demethylase activity. This modification is crucial for FTO
Area Of Science
- Biochemistry
- Molecular Biology
- Cancer Research
Background
- N6-Methyladenosine (m6A) is the most abundant mRNA modification, regulating key cellular processes.
- FTO, an m6A demethylase, is implicated in cancer development, stemness, immune evasion, and drug resistance.
Purpose Of The Study
- To investigate the regulatory mechanism of FTO activity.
- To determine the role of FTO acetylation in cancer.
Main Methods
- In vivo and in vitro acetylation assays using GCN5 and FTO.
- RNA demethylase activity assays.
- Analysis of FTO target mRNA levels and downstream effects in cancer models.
Main Results
- FTO is acetylated by GCN5 at lysine 88 (K88).
- K88 acetylation significantly enhances FTO's m6A demethylase activity by increasing RNA binding.
- K88 acetylation promotes tumorigenesis by reducing m6A levels in target oncogenes like MYC and promoting their altered expression.
Conclusions
- K88 acetylation is a critical post-translational modification that enhances FTO's enzymatic activity and oncogenic functions.
- Targeting FTO acetylation may offer a novel therapeutic strategy for cancers.
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