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Updated: Dec 27, 2025

Monitoring Protein-RNA Interaction Dynamics In Vivo at High Temporal Resolution Using χCRAC
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Capturing RNA-protein interaction via CRUIS.

Ziheng Zhang1,2,3, Weiping Sun1,2,3, Tiezhu Shi1,2,3

  • 1School of Life Science and Technology, ShanghaiTech University, Shanghai, China.

Nucleic Acids Research
|March 7, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed a new CRISPR-based tool, CRUIS, to study RNA-protein interactions in living cells. This method identifies proteins bound to specific RNAs, offering new insights into RNA biology.

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biochemistry

Background:

  • RNA molecules interact with numerous proteins throughout their lifecycle.
  • Understanding these RNA-protein interactions is crucial for deciphering gene regulation and cellular functions.
  • Existing methods for studying these interactions often have limitations in capturing in vivo dynamics.

Purpose of the Study:

  • To develop an innovative tool for capturing RNA-protein interactions within living cells.
  • To validate the efficacy of the new tool using a well-characterized long noncoding RNA.
  • To identify novel protein partners of specific RNA molecules.

Main Methods:

  • Development of the CRISPR-based RNA-United Interacting System (CRUIS).
  • CRUIS combines CRISPR technology with a proximity targeting system (PUP-IT) using dCas13a and PafA fusion.
  • Identification of RNA-binding proteins via mass spectrometry after proximity labeling.

Main Results:

  • CRUIS successfully captured RNA-protein interactions for the target NORAD (Noncoding RNA activated by DNA damage).
  • The interactome profile generated by CRUIS closely matched results from established crosslinking and immunoprecipitation (CLIP)-based methods.
  • Several previously unknown proteins interacting with NORAD were identified using CRUIS.

Conclusions:

  • CRUIS is an effective tool for studying RNA-protein interactions in their native cellular context.
  • This method provides a powerful approach to discover novel RNA-binding proteins and understand RNA biology.
  • CRUIS facilitates deeper insights into the dynamic regulation of RNA function within cells.