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Updated: Jan 5, 2026

Chemical Dimerization-Induced Protein Condensates on Telomeres
Published on: April 12, 2021
TALEN-Based Chemically Inducible, Dimerization-Dependent, Sequence-Specific Nucleases
Daisuke Matsumoto1, Hirokazu Tamamura1, Wataru Nomura1
1Institute of Biomaterials and Bioengineering , Tokyo Medical and Dental University , 2-3-10 Kandasurugadai , Chiyoda-ku, Tokyo 101-0062 , Japan.
Scientists developed a chemically inducible dimerization (CID) system for precise genome editing. This system uses rapamycin to control sequence-specific nucleases, enabling rapid and targeted DNA cleavage for mutation analysis.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Precise control of sequence-specific nucleases is crucial for genome editing.
- Existing methods may lack rapid temporal control over nuclease activity.
Purpose of the Study:
- To construct and validate a chemically inducible nuclease system for enhanced genome editing control.
- To enable time-resolved analysis of mutation induction mechanisms.
Main Methods:
- Engineered a chemically inducible dimerization (CID) system using FKBP and FRB domains.
- Integrated CID into the interlinker region between DNA binding domains and the FokI catalytic domain.
- Utilized rapamycin to induce dimerization and nuclease activity.
Main Results:
- The CID system demonstrated rapamycin-inducible dimerization and FokI nuclease activation.
- Rapamycin addition led to rapid induction of DNA cleavage.
- The system facilitates precise temporal control over nuclease activity in the nucleus.
Conclusions:
- The developed CID nuclease system offers a powerful tool for controlled genome editing.
- This system allows for rapid, on-demand DNA cleavage with potential applications in studying mutation dynamics.
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