Nucleases in homologous recombination as targets for cancer therapy

Area of Science:

• Molecular Biology
• Genetics
• Cancer Research

Background:

• Genomic DNA integrity is crucial and constantly threatened by endogenous and exogenous factors.
• The DNA damage response (DDR) is an essential cellular mechanism for maintaining genomic stability.
• DNA double-strand breaks (DSBs) are particularly dangerous DNA lesions requiring efficient repair pathways.

Purpose of the Study:

• To review the role of homologous recombination (HR) in repairing DNA double-strand breaks (DSBs).
• To identify nucleases and recombination factors involved in HR as potential targets for cancer therapy.
• To explore how targeting these factors can exploit cancer-specific genetic vulnerabilities.

Main Methods:

• Literature review focusing on DNA repair mechanisms, specifically homologous recombination.
• Analysis of the role of key nucleases and recombination factors in DNA repair.
• Examination of the implications of these factors' expression levels (inactivation or overexpression) in cancer cells.

Main Results:

• Homologous recombination is a critical pathway for repairing DNA double-strand breaks.
• Specific nucleases and recombination factors are integral to HR.
• Alterations in the expression of these factors can influence cancer cell sensitivity to DNA-damaging agents and radiation.
• These factors can also confer resistance to cancer therapies.

Conclusions:

• Nucleases and recombination factors involved in homologous recombination represent promising targets for novel cancer therapies.
• Targeting these factors can selectively induce lethality in cancer cells by exploiting genetic abnormalities not present in normal cells.
• This approach offers a strategy for developing targeted cancer treatments with potentially reduced side effects.