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Updated: Jul 26, 2025
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Published on: May 27, 2021
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Paralog-based synthetic lethality: rationales and applications.
1The Innovation Center, Beijing StoneWise Technology Co Ltd., Beijing, China.
Frontiers in Oncology
|June 23, 2023
Summary
Synthetic lethality (SL) targets cancer cells by exploiting gene mutations. Paralog-based SL offers a promising strategy for cancer therapeutics, though challenges remain in clinical development.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Cancer arises from gene mutations and overexpression.
- Synthetic lethality (SL) exploits gene pairs to selectively kill cancer cells.
- Paralogs, duplicated homologous genes, are frequent targets in tumor cells.
Purpose of the Study:
- To review mechanisms of paralog-based SL.
- To discuss challenges and prospects of paralog-SL in cancer therapy.
Main Methods:
- Review of existing literature on paralog-based synthetic lethality.
- Analysis of functional and genetic interactions of paralog gene pairs.
- Discussion of CRISPR-Cas9 screening data.
Main Results:
- Paralogs are ideal SL targets due to frequent homozygous loss in tumors.
- High-throughput screenings identified numerous paralog-SL pairs.
- Mechanistic understanding and specific inhibitor development are key challenges.
Conclusions:
- Paralog-based SL holds significant therapeutic potential for cancer treatment.
- Further research is needed to overcome challenges in targeting paralog pairs.
- Understanding mechanisms is crucial for clinical application of paralog-SL.
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