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Related Concept Videos

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RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
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In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
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Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
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Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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A Nonsequencing Approach for the Rapid Detection of RNA Editing
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Cyclic γ-AApeptide-Based Molecular Glues for RNA m6A Editing.

Chanjuan Dong1, Sihao Li2, Xinyu Xia3

  • 1Department of Chemistry, Case Western Reserve University, 2080 Adelbert Road, Cleveland, Ohio 44106, United States.

ACS Chemical Biology
|February 19, 2026
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Summary

Researchers developed a novel molecular glue to precisely edit RNA's m6A modification. This strategy targets specific RNA molecules, like MALAT1, to alter their function and stability, offering new therapeutic possibilities.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • RNA Biology

Background:

  • N6-methyladenosine (m6A) is a crucial RNA modification impacting RNA metabolism and disease.
  • Current methods for RNA m6A editing lack transcript specificity.

Purpose of the Study:

  • To develop a novel molecular glue strategy for transcript-specific m6A editing.
  • To create bifunctional molecules that recruit endogenous m6A erasing enzymes to target RNAs.

Main Methods:

  • Screening of cyclic γ-AApeptide libraries to identify binders to the MALAT1 RNA A2577 region.
  • Development of a bifunctional molecular glue by conjugating a MALAT1-binding peptide with fluorescein, an FTO-binding ligand.
  • Demonstration of targeted m6A erasure, disruption of protein-RNA interactions, and RNA destabilization in vitro.

Main Results:

  • Identification of a novel peptidomimetic binder for the MALAT1 A2577 region.
  • Successful recruitment of the m6A eraser FTO to MALAT1 by the bifunctional molecular glue.
  • Achieved transcript-specific m6A erasure, leading to disrupted HNRNPC-MALAT1 binding and MALAT1 destabilization.

Conclusions:

  • The developed molecular glue strategy enables precise, transcript-specific m6A editing.
  • This approach offers a new platform for developing RNA-modulating therapeutics.
  • The strategy holds promise for regulating RNA modifications in various human diseases.