CRISPR library screening is a powerful tool for studying gene function and identifying target genes, significantly simplifying functional gene discovery. In addition to the most commonly used CRISPR knockout sgRNA libraries, options include transcriptional activation (CRISPRa) libraries and CRISPR interference (CRISPRi) libraries. Professional research institutions provide complete CRISPR library screening solutions. Contact specialized service providers for customized experimental strategies.

▍  CRISPR Library Classification

The whole genome sgRNA library enables knockout of all coding and non-coding genes (including miRNA genes) in human or mouse models. Each sgRNA is cloned into optimized lentiviral vectors to ensure efficient transduction in primary cells or cell lines. Pooled lentiviral libraries should be transduced at low MOI to guarantee single sgRNA integration per cell. Post-transduction NGS analysis evaluates sgRNA performance, followed by post-screening NGS and data analysis to identify depleted or enriched sgRNAs.

Sub-pool libraries focus on genes within specific pathways or biological processes. Custom sgRNA libraries offer significant advantages in functional genomics research, allowing optimization for specific cell types to enhance screening efficiency and feasibility compared to whole genome approaches.

▍  Common CRISPR Library Types

Type Species Gene Coverage Vector System
Knockout library Human Whole genome Single/dual plasmid lentiviral system
Knockout library Mouse Whole genome Single/dual plasmid lentiviral system
CRISPRa library Human Whole genome Dual/triple plasmid lentiviral system
CRISPRa library Mouse Whole genome Dual/triple plasmid lentiviral system
Knockout library Human 1,880 uncharacterized genes Dual plasmid lentiviral system
Knockout library Human 507 kinase genes Dual plasmid lentiviral system
Custom library Customizable Single/dual/triple plasmid system

For complete library specifications, consult technical resources.

▍  Integrated Gene Function Screening Workflow

CRISPR screening typically involves three phases: sgRNA library construction, functional screening, and target validation. Each step's design significantly impacts final outcomes. Professional teams offer end-to-end solutions from library customization to lentiviral production and cellular screening, optimizing protocols for enhanced efficiency.

Standard workflow:

CRISPR Screening Workflow

Common phenotypic screening applications:

▲ Tumor metastasis-related genes (in vivo)
▲ Cell migration/invasion mechanisms
▲ Colony formation regulators
▲ Cell proliferation modulators
▲ Drug resistance factors
▲ Custom screening designs

Specialized service providers offer cost-effective solutions through optimized screening protocols to accelerate innovative research.