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Updated: Aug 4, 2025

06:07
Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors
Published on: August 5, 2022
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Cancer mutations rewire the RNA methylation specificity of METTL3-METTL14
Biorxiv : the Preprint Server for Biology
|March 30, 2023
Summary
A cancer-associated mutation in METTL14 (METTL14R298P) alters N6-methyladenosine (m6A) RNA modification sites, promoting cancer growth by targeting noncanonical GGAU motifs. This highlights the importance of m6A site specificity in gene regulation and oncogenesis.
Area of Science:
- Molecular Biology
- Epigenetics
- Cancer Research
Background:
- Chemical modification of RNAs, particularly N6-methyladenosine (m6A), plays a critical role in post-transcriptional gene regulation.
- The METTL3-METTL14 complex is the primary enzyme responsible for m6A methylation in messenger RNAs (mRNAs).
- Aberrant expression of methyltransferases, including METTL3-METTL14, is implicated in the development and progression of various cancers.
Conclusions:
- Changes in m6A modification location, driven by mutations like METTL14R298P, can significantly impact oncogenesis.
- Sequence-specific m6A deposition is crucial for the proper function of this RNA modification.
- Noncanonical methylation events mediated by mutant METTL14 can contribute to aberrant gene expression and cancer development.
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