The contribution of DNA base damage to human cancer is modulated by the base excision repair interaction network

Area of Science:

• Molecular Biology
• Genetics
• Cancer Research

Background:

• Base excision repair (BER) is vital for DNA base damage repair and genetic stability.
• Deficiencies in BER have been difficult to link directly to human cancer development.
• Individual DNA glycosylase knockout mice typically do not develop spontaneous tumors.

Purpose of the Study:

• To review the role of DNA base damage in human cancer.
• To focus on DNA glycosylases, dUTPase, and MTH1 in preventing damaged nucleotide incorporation.
• To explore protein-protein interactions involving these key BER pathway enzymes.

Main Methods:

• Literature review of DNA base damage and cancer.
• Analysis of the roles of DNA glycosylases, dUTPase, and MTH1.
• Compilation and analysis of protein-protein interaction data.

Main Results:

• Evidence suggests cancer susceptibility depends on DNA repair enzyme regulation and function modulation, not just mutations.
• A comprehensive list of protein-protein interactions for key BER enzymes is presented.
• Interacting partners with established roles in human cancer are highlighted.

Conclusions:

• Regulation of DNA repair enzyme expression and function is critical for cancer prevention.
• Protein-protein interactions play a significant role in the context of DNA repair and cancer susceptibility.
• Understanding these interactions offers insights into cancer development and potential therapeutic targets.