Protocol for establishing inducible CRISPR interference system for multiple-gene silencing in human pluripotent stem...

Area of Science:

• Stem Cell Biology
• Gene Editing Technologies
• Molecular Genetics

Background:

• Inducible loss-of-function strategies are essential for dissecting gene function.
• Developing inducible, multi-gene knockout models in human induced pluripotent stem cells (hPSCs) is complex and labor-intensive.

Purpose of the Study:

• To present a protocol for establishing a doxycycline-inducible CRISPR interference (CRISPRi) system.
• To enable concurrent silencing of multiple genes in hPSCs.
• To overcome challenges associated with creating inducible, multiple-gene knockout models.

Main Methods:

• Establishment of host CRISPRi hPSCs.
• Design and lentiviral cloning of single-guide RNAs (sgRNAs).
• Generation and selection of monoclonal CRISPRi hPSC lines.
• Procedures for identifying effective CRISPRi clones.

Main Results:

• Successful establishment of a doxycycline-inducible CRISPRi system in hPSCs.
• Demonstration of concurrent silencing of multiple genes.
• Detailed protocol for creating and validating inducible multi-gene knockout hPSC lines.

Conclusions:

• The developed CRISPRi system provides an efficient method for inducible, multi-gene silencing in hPSCs.
• This protocol simplifies the generation of complex genetic models for functional genomics research.
• The system facilitates a deeper understanding of gene function in human pluripotent stem cells.