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Recent Progress in DNA Damage Response-Targeting PROTAC Degraders
Binbin Cheng1, Xiaoting Fei1, Zongbao Ding2
1School of Medicine, Hubei Polytechnic University, Huangshi 435003, China.
Abstract:
DNA damage response (DDR) defects in cells play a crucial role in tumor development by promoting DNA mutations. These mutations create vulnerabilities specific to cancer cells, which can be effectively targeted through synthetic lethality-based therapies. To date, numerous small molecule DDR inhibitors have been identified, and some of them have already been approved for clinical use. However, due to the complexity of the tumor microenvironment, mutations may occur in the amino acid residues of DDR targets. These mutations can affect the efficacy of small molecule inhibitors targeting DDR pathways. Therefore, researchers have turned their attention to next-generation DNA damage repair modulators, particularly those based on PROTAC technology. From this perspective, we overviewed the recent progress on DDR-targeting PROTAC degraders for cancer therapy. In addition, we also summarized the biological functions of different DDR targets. Finally, the challenges and future directions for DDR-target PROTAC degraders are also discussed in detail.
Insights
Defects in DNA damage response (DDR) drive cancer mutations, creating targets for therapy. PROTAC technology offers a promising next-generation approach to overcome limitations of current DDR inhibitors in cancer treatment.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Defects in DNA damage response (DDR) are fundamental to cancer development, leading to mutations that create cancer-specific vulnerabilities.
- Synthetic lethality therapies exploit these vulnerabilities, with small molecule DDR inhibitors showing clinical success.
- Tumor microenvironment mutations can reduce the efficacy of conventional DDR inhibitors.
Purpose of the Study:
- To review recent advancements in DDR-targeting PROTAC degraders for cancer therapy.
- To summarize the biological roles of various DDR targets.
- To discuss challenges and future prospects for DDR-targeting PROTAC degraders.
Main Methods:
- Literature review of recent progress in DDR-targeting PROTAC technology.
- Compilation of information on the biological functions of key DDR targets.
- Analysis of current challenges and future directions in the field.
Main Results:
- PROTAC technology represents a novel strategy for modulating DDR pathways.
- Understanding DDR target biology is crucial for designing effective degraders.
- PROTACs offer potential to overcome resistance mechanisms associated with small molecule inhibitors.
Conclusions:
- DDR-targeting PROTAC degraders are an emerging and promising therapeutic strategy in oncology.
- Further research is needed to address challenges and optimize PROTAC-based cancer therapies.
- PROTACs hold potential for improved efficacy and overcoming resistance in cancer treatment.
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