Targeting DNA methyltransferases for cancer therapy
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Updated: Jun 20, 2025

Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors
Published on: August 5, 2022
Kaiyue Wang1, Zhangxu He1, Gang Jin1
1Pharmacy College, Henan University of Chinese Medicine, 450046 Zhengzhou, PR China.
Abstract:
DNA methyltransferases (DNMTs) play a crucial role in genomic DNA methylation. In mammals, DNMTs regulate the dynamic patterns of DNA methylation in embryonic and adult cells. Abnormal functions of DNMTs are often indicative of cancers, including overall hypomethylation and partial hypermethylation of tumor suppressor genes (TSG), which accelerate the malignancy of tumors, worsen the condition of patients, and significantly exacerbate the difficulty of cancer treatment. Currently, nucleoside DNMT inhibitors such as Azacytidine and Decitabine have been approved by the FDA and EMA for the treatment of acute myeloid leukemia (AML), chronic myelomonocytic leukemia (CMML), and myelodysplastic syndrome (MDS). Therefore, targeting DNMTs is a very promising anti-tumor strategy. This review mainly summarizes the therapeutic effects of DNMT inhibitors on cancers. It aims to provide more possibilities for the treatment of cancers by discovering more DNMT inhibitors with high activity, high selectivity, and good drug-like properties in the future.
Insights
DNA methyltransferases (DNMTs) are crucial in regulating DNA methylation and are implicated in cancer development. This review summarizes DNMT inhibitors as a promising anti-tumor strategy for improved cancer treatment.
Area of Science:
- Epigenetics and Molecular Oncology
Background:
- DNA methyltransferases (DNMTs) are key regulators of genomic DNA methylation in mammals.
- Aberrant DNMT function, characterized by hypomethylation and hypermethylation of tumor suppressor genes (TSGs), is linked to cancer progression and treatment resistance.
Purpose of the Study:
- To review the therapeutic effects of DNMT inhibitors in cancer treatment.
- To explore the potential of developing novel DNMT inhibitors with enhanced activity, selectivity, and drug-like properties.
Main Methods:
- Literature review of studies on DNMT inhibitors and their therapeutic applications in oncology.
- Analysis of current FDA and EMA-approved DNMT inhibitors and their mechanisms.
Main Results:
- Nucleoside DNMT inhibitors like Azacytidine and Decitabine are approved for treating hematological malignancies such as AML, CMML, and MDS.
- Targeting DNMTs represents a highly promising strategy for anti-cancer therapy.
Conclusions:
- DNMT inhibitors demonstrate significant therapeutic potential in treating various cancers.
- Further research into novel DNMT inhibitors is essential for advancing cancer treatment options.
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