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Mapping RNA-RNA Interactions Globally Using Biotinylated Psoralen
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M(R)apping RNA-Protein Interactions.

Jasmine Barra1,2, Roberto Vendramin1,2, Eleonora Leucci3

  • 1Department of Oncology, Laboratory of RNA cancer biology, LKI Leuven Cancer Institute, KU Leuven-University of Leuven, Leuven, Belgium.

Methods in Molecular Biology (Clifton, N.J.)
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Summary

We developed a simple method to isolate and identify RNA-protein complexes bound to long non-coding RNAs (lncRNAs) in their natural state. This technique helps understand lncRNA functions by studying their native interactions.

Keywords:
Mass spectrometryProteinsRAPSubcellular fractionslncRNAs

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Understanding RNA-protein interactions is crucial for deciphering RNA functions.
  • Long non-coding RNAs (lncRNAs) play significant roles in cellular processes, but their interactomes are not fully characterized.

Purpose of the Study:

  • To develop an accessible method for isolating and identifying native RNA-protein complexes involving lncRNAs.
  • To facilitate the study of lncRNA-mediated regulatory mechanisms.

Main Methods:

  • Utilized biotinylated antisense oligonucleotides (ASOs) for targeted purification of specific lncRNAs.
  • Employed a method to isolate associated proteins and RNAs in their native configuration from cellular compartments.

Main Results:

  • Successfully developed an easy-to-use technique for capturing lncRNA-bound complexes.
  • Enabled the identification of proteins and RNAs interacting with lncRNAs in their native cellular context.

Conclusions:

  • The developed method provides a valuable tool for investigating lncRNA functions through their native interactions.
  • This approach can advance the understanding of RNA biology and regulatory networks.