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Programmable cell killer: CRISPR-Cas12a2 eliminates cells via RNA identity

Yuanli Gao1, Baojun Wang1

  • 1College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China.

Molecular Cell
|July 16, 2026
PubMed

Insights

Researchers utilized CRISPR-Cas12a2 to precisely eliminate specific yeast and human cells. This groundbreaking RNA-triggered DNA shredding technology offers high specificity and minimal off-target effects.

Area of Science:

  • Molecular Biology
  • Gene Editing Technologies
  • Biotechnology

Background:

  • CRISPR-Cas systems are powerful tools for genome manipulation.
  • CRISPR-Cas12a2 exhibits RNA-triggered DNA shredding activity.
  • Targeted cell elimination is crucial for research and therapeutic applications.

Purpose of the Study:

  • To adapt CRISPR-Cas12a2's DNA shredding for programmable cell elimination in eukaryotic systems.
  • To achieve single-nucleotide resolution for targeting specific transcripts.
  • To evaluate the specificity and off-target activity of this novel approach.

Main Methods:

  • Application of CRISPR-Cas12a2 in yeast and human cells.
  • Utilizing RNA triggers to activate DNA shredding.
  • Assessing transcript targeting and cell elimination efficacy.
  • Analyzing off-target effects at the genomic level.

Main Results:

  • Demonstrated programmable elimination of specific yeast and human cells.
  • Achieved single-nucleotide resolution in targeting transcripts.
  • Observed non-detectable off-target activity, indicating high precision.
  • Validated the RNA-triggered DNA shredding mechanism in eukaryotic cells.

Conclusions:

  • CRISPR-Cas12a2 can be repurposed for precise, RNA-guided cell elimination in eukaryotes.
  • This technology offers a highly specific and efficient method for transcript-targeted cell ablation.
  • The findings open new avenues for applications in cell biology and potentially therapeutics.

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