CRISPR-Guided Proximity Labeling of RNA-Protein Interactions

Area of Science:

• Molecular Biology
• Biochemistry
• Genomics

Background:

• Proximity labeling uses engineered enzymes to biotinylate nearby proteins in living cells.
• CRISPR-Cas systems enable programmable targeting of DNA elements for proximity labeling (e.g., dCas9-APEX2).
• Mapping protein interactions at RNA elements using proximity labeling remains less developed.

Purpose of the Study:

• To review advances in CRISPR-guided proximity labeling for RNA-protein interactions.
• To propose future applications of engineered proximity-labeling enzymes for RNA-centric studies.

Main Methods:

• Utilizing RNA-targeting CRISPR-Cas13 systems combined with proximity labeling.
• Employing engineered proximity-labeling enzymes for enhanced sensitivity and specificity.
• Analyzing biotinylated proteins to identify RNA-interacting partners.

Main Results:

• CRISPR-Cas13 facilitates proximity labeling to define protein interactomes at specific RNA elements.
• Established methods for DNA-centric proximity labeling serve as a foundation.
• Recent engineered enzymes offer potential for improved RNA-protein interaction mapping.

Conclusions:

• CRISPR-guided proximity labeling is a powerful tool for studying RNA-protein interactions.
• Further application of advanced proximity-labeling enzymes can deepen our understanding of RNA-centric biological processes.
• This approach holds promise for future discoveries in RNA biology and molecular mechanisms.