Review-Epigenetic therapy for cancer

Area of Science:

• Molecular Biology
• Genetics
• Epigenetics

Background:

• Epigenetics studies heritable changes in gene expression without DNA sequence alteration.
• Key epigenetic mechanisms include DNA methylation, histone deacetylation, RNA-associated silencing, and genomic imprinting.
• Environmental factors and xenobiotics can influence epigenetic modifications.

Purpose of the Study:

• To explore the role of epigenetic alterations in gene silencing.
• To highlight the significance of DNA methylation and histone modifications in malignant diseases.
• To introduce emerging therapeutic strategies targeting epigenetic dysregulation.

Main Methods:

• Review of epigenetic mechanisms, including DNA methylation and histone deacetylation.
• Analysis of the role of epigenetic changes in disease, particularly cancer.
• Discussion of current and developing drug classes targeting epigenetic alterations.

Main Results:

• Epigenetic gene silencing occurs through four primary mechanisms.
• DNA methylation and histone modifications are critical drivers of malignant diseases.
• Cancer is characterized by hypermethylation of tumor suppressor genes, leading to silencing.

Conclusions:

• Epigenetic alterations play a crucial role in disease pathogenesis.
• Histone deacetylation (HDAC) inhibitors and DNA methyltransferase (DNMT) inhibitors are promising therapeutic agents.
• The scope of epigenetic therapy is expected to expand significantly in the future.