What question did this study set out to answer?

This research aims to identify the best sgRNA coverage and screening time to ensure effective CRISPR screening.

May 13, 20260 citations

Determining optimal sgRNA coverage and screening duration for pooled CRISPR screens: A quantitative framework.

TXTao XuPeking University 郭郭振举Peking University YLYinghao LiPeking University

Key Points

This research aims to identify the best sgRNA coverage and screening time to ensure effective CRISPR screening.
Incorporated multiple time points to monitor sgRNA dynamics.
Identified optimal parameters of 15 days and 800 × coverage for iBAR-based CRISPR screens.
Conducted longitudinal analysis on sgRNA distribution patterns.
Optimal screening duration of 15 days and 800 × coverage ensures effective sgRNA distribution.
Extending screening beyond 15 days preserves stable sgRNA distribution patterns.
Data from various coverage levels provides essential references for experimental conditions.

Abstract

knockout libraries. Furthermore, we incorporated multiple timepoints to monitor sgRNA-mediated gene knockout dynamics. Here, balancing data quality, time efficiency, and cost, we identify 15 days and 800 × coverage as the optimal screening parameters for standard iBAR‑based CRISPR screens. Data from varying coverage levels can also serve as essential references for screening under different experimental conditions. Longitudinal analysis revealed that extending the screening period beyond 15 days maintains stable sgRNA distribution patterns within the cell population. This study establishes key parameter benchmarks to ensure CRISPR knockout screening efficacy and reproducibility, providing a solid foundation for downstream drug screening and target identification.

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