Deciphering and simulating models of radiation genotoxicity with CRISPR/Cas9 systems

Area of Science:

• Molecular Biology
• Genetics
• Radiation Biology

Background:

• CRISPR/Cas9 systems offer precise genome editing capabilities.
• Radiobiology investigates the biological effects of ionizing radiation (IR).
• Understanding IR-induced DNA damage is crucial for radiation protection and therapy.

Purpose of the Study:

• To review the applications of CRISPR/Cas9 in radiobiology for simulating IR effects.
• To explore the role of CRISPR/Cas9 in studying DNA targets, including nuclear and mitochondrial DNA (mtDNA).
• To discuss the simulation of complex double-stranded breaks (DSBs) and other IR-related damage using CRISPR/Cas9.

Main Methods:

• Literature review of CRISPR/Cas9 applications in radiobiology.
• Analysis of CRISPR/Cas9's utility in mimicking IR-induced genotoxicity.
• Discussion of anti-CRISPR proteins for dose rate simulation and auxiliary domains for damage simulation.

Main Results:

• CRISPR/Cas9 can accurately simulate IR-like effects on DNA targets.
• The system allows for the study of both nuclear DNA and under-recognized mtDNA damage.
• Anti-CRISPR proteins and auxiliary domains enhance simulation capabilities for dose rate and oxidative damage.

Conclusions:

• CRISPR/Cas9 is an effective experimental tool for modeling IR-induced DNA damage and complex DSBs in radiobiology.
• The technology aids in understanding nucleocentric responses and the contribution of mtDNA to IR effects.
• Further integration with computational models can advance radiobiology research, despite existing limitations.