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Published on: June 13, 2019
Small molecule epigenetic inhibitors targeted to histone lysine methyltransferases and demethylases
Zhanxin Wang1, Dinshaw J Patel
1Key Laboratory of Cell Proliferation and Regulation Biology of Ministry of Education, College of Life Sciences, Beijing Normal University, 19 Xinjiekouwai Avenue, Beijing 100875, People's Republic of China.
Abstract:
Altered chromatin structures and dynamics are responsible for a range of human malignancies, among which the status of histone lysine methylation remains of paramount importance. Histone lysine methylation is maintained by the relative activities of sequence-specific methyltransferase (KMT) writers and demethylase (KDM) erasers, with aberrant enzymatic activities or expression profiles closely correlated with multiple human diseases. Hence, targeting these epigenetic enzymes should provide a promising avenue for pharmacological intervention of aberrantly marked sites within the epigenome. Here we present an up-to-date critical evaluation on the development and optimization of potent small molecule inhibitors targeted to histone KMTs and KDMs, with the emphasis on contributions of structural biology to development of epigenetic drugs for therapeutic intervention. We anticipate that ongoing advances in the development of epigenetic inhibitors should lead to novel drugs that site-specifically target KMTs and KDMs, key enzymes responsible for maintenance of the lysine methylation landscape in the epigenome.
Insights
Altered histone lysine methylation, regulated by KMTs and KDMs, drives cancer. Small molecule inhibitors targeting these epigenetic enzymes offer a promising therapeutic strategy for malignancies.
Area of Science:
- Epigenetics and Molecular Biology
- Cancer Research and Pharmacology
Background:
- Aberrant chromatin structure and dynamics are implicated in human malignancies.
- Histone lysine methylation, regulated by histone lysine methyltransferases (KMTs) and demethylases (KDMs), is crucial in disease pathogenesis.
- Dysregulation of KMT and KDM activity is linked to various human diseases.
Purpose of the Study:
- To critically evaluate the development and optimization of small molecule inhibitors targeting histone KMTs and KDMs.
- To highlight the role of structural biology in advancing epigenetic drug discovery.
- To explore therapeutic interventions for diseases driven by aberrant epigenetic modifications.
Main Methods:
- Review and critical evaluation of current research on small molecule inhibitors for KMTs and KDMs.
- Emphasis on structure-based drug design principles.
- Analysis of contributions from structural biology to epigenetic drug development.
Main Results:
- Significant progress has been made in developing potent small molecule inhibitors for histone KMTs and KDMs.
- Structural biology insights have been pivotal in optimizing inhibitor potency and specificity.
- Targeting these epigenetic enzymes represents a viable pharmacological strategy.
Conclusions:
- Small molecule inhibitors targeting KMTs and KDMs are promising therapeutic agents for epigenetic-driven diseases.
- Continued advances in epigenetic inhibitor development are expected to yield novel drugs.
- Future drugs will likely offer site-specific targeting of KMTs and KDMs for precise epigenetic landscape modulation.
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