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Updated: Jul 30, 2025
10:21
Cell Based Assays of SINEUP Non-coding RNAs That Can Specifically Enhance mRNA Translation
Published on: February 1, 2019
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SINEUP non-coding RNA activity depends on specific N6-methyladenosine nucleotides
Bianca Pierattini1,2, Sabrina D'Agostino2, Carlotta Bon2
1Area of Neuroscience, International School for Advanced Studies (SISSA), Trieste, Italy.
Molecular Therapy. Nucleic Acids
|May 15, 2023
Summary
SINEUPs (small interfering RNA-based UP-regulators) enhance gene translation via an m6A-dependent mechanism. This RNA modification is crucial for SINEUPs to boost target mRNA translation, advancing therapeutic applications.
Area of Science:
- Molecular Biology
- RNA Biology
- Epigenetics
Background:
- SINEUPs are long non-coding RNAs that enhance target mRNA translation by increasing polysome association.
- Understanding the precise mechanism of SINEUP action is crucial for their clinical translation in genetic and complex diseases.
Purpose of the Study:
- To investigate the role of N6-methyladenosine (m6A) modification in SINEUP activity and mechanism of action.
- To elucidate how m6A impacts SINEUP-mediated translation enhancement.
Main Methods:
- m6A modification of SINEUPs (AS Uchl1 and miniSINEUP-DJ-1) by METTL3 enzyme.
- Nanopore direct RNA sequencing and reverse transcription assays to map m6A sites.
- Analysis of target mRNA polysome association upon m6A removal from SINEUPs.
Main Results:
- Natural and synthetic SINEUPs are modified by the METTL3 enzyme.
- m6A removal from SINEUP RNA leads to depletion of target mRNA from actively translating polysomes.
- SINEUP enrichment in ribosomal fractions remains unaffected by m6A removal.
Conclusions:
- SINEUP-mediated translation enhancement requires an m6A-dependent step.
- This study reveals a novel mechanism for m6A in regulating translation.
- Findings strengthen the understanding of SINEUPs and pave the way for improved therapeutic applications.
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