Identifying essential long non-coding RNAs in cancer using CRISPRi-based dropout screens.

Area of Science:

• Genomics
• Molecular Biology
• Cancer Research

Background:

• Long non-coding RNAs (lncRNAs) play crucial roles in cancer development and progression.
• CRISPR-based high-throughput screening is a powerful tool for functional genomics.

Purpose of the Study:

• To present a detailed protocol for identifying essential lncRNAs in cancer using CRISPR interference (CRISPRi)-based dropout screens.
• To outline the methodology for selecting target sites, designing guide RNAs, and generating CRISPRi cell lines for functional screening.

Main Methods:

• CRISPR interference (CRISPRi) technology for gene silencing.
• Dropout screening to identify essential genes or regulatory elements.
• Systematic assessment of long non-coding RNA (lncRNA) function in cancer cell lines.

Main Results:

• A comprehensive protocol for CRISPRi-based dropout screens targeting lncRNAs.
• Methodology for selecting optimal target sites and designing effective guide RNAs.
• Guidelines for generating and utilizing CRISPRi cell lines for cancer research.

Conclusions:

• CRISPRi-based dropout screens provide a robust approach for identifying functionally essential lncRNAs in cancer.
• This protocol facilitates systematic functional genomics studies of lncRNAs in oncogenesis.
• The presented methodology aids in uncovering novel cancer-related lncRNA targets.