CRISPR-Mediated Mutagenesis of Long Noncoding RNAs

Area of Science:

• Molecular Biology
• Genetics
• RNA Biology

Background:

• Long noncoding RNAs (lncRNAs) are crucial regulators in cellular networks, mediating functions through interactions with proteins, DNA, and other RNAs via specific functional domains.
• Understanding the precise roles of lncRNAs and their domains requires precise genetic manipulation tools.

Purpose of the Study:

• To present experimental methods for generating genomic deletions in human haploid cell lines using CRISPR/Cas9.
• To enable the functional characterization of lncRNAs and their domains through knockout and partial deletion mutant cell lines.
• To describe a CRISPR-mediated knockin approach for validating lncRNA functions by tethering RNA-binding proteins.

Main Methods:

• CRISPR/Cas9 system for generating genomic deletions (knockouts and partial deletions) in a human haploid cell line.
• Development of a CRISPR-mediated knockin strategy for artificial tethering of RNA-binding proteins to lncRNAs.

Main Results:

• Established protocols for creating lncRNA knockout and partial deletion cell lines using CRISPR/Cas9.
• Demonstrated the utility of these cell lines for dissecting lncRNA functions and domain activities.
• Validated a knockin method to confirm lncRNA-mediated functions through protein tethering.

Conclusions:

• CRISPR/Cas9 genome editing in human haploid cells provides a powerful platform for functional lncRNA research.
• These methods facilitate the molecular dissection of lncRNA roles and interactions within cellular regulatory networks.
• The developed techniques are essential for advancing our understanding of lncRNA biology and its implications.