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Updated: Oct 25, 2025
09:05
Pooled CRISPR-Based Genetic Screens in Mammalian Cells
Published on: September 4, 2019
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BARBEKO'ing in the lab: Versatile CRISPR screens with barcoded base editors
1Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, USA; Department of Genetics, Harvard Medical School, Cambridge, MA, USA; Center for Bits and Atoms, Cambridge, MA, USA; MIT Media Lab, Massachusetts Institute of Technology, Cambridge, MA, USA.
Molecular Cell
|August 6, 2021
Summary
Researchers developed BARBEKO, a novel CRISPR screening method. This approach uses cytosine base editors and barcoded guide RNAs to reduce toxicity and improve experimental reliability.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- CRISPR screening is a powerful tool for genetic analysis.
- Double-stranded breaks from CRISPR can cause cellular toxicity, limiting screening efficiency.
- Existing methods struggle with high infection rates and reproducibility.
Purpose of the Study:
- To introduce a novel CRISPR screening platform, BARBEKO.
- To overcome limitations of existing CRISPR screening methods, specifically toxicity and reproducibility.
- To enhance the efficiency and reliability of large-scale genetic screens.
Main Methods:
- BARBEKO couples cytosine base editors with internally barcoded single-guide RNAs (sgRNAs).
- This dual approach minimizes double-stranded break formation.
- High multiplicities of infection (MOI) are enabled by the reduced toxicity.
Main Results:
- Elimination of toxicity induced by double-stranded breaks.
- Successful implementation of high multiplicities of infection.
- Demonstrated enhanced experimental reproducibility in CRISPR screens.
Conclusions:
- BARBEKO represents a significant advancement in CRISPR screening technology.
- The method offers improved safety and reliability for genetic studies.
- BARBEKO facilitates more robust and efficient functional genomic analyses.
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