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Updated: May 8, 2026

Assays for Validating Histone Acetyltransferase Inhibitors
Published on: August 6, 2020
[Histone deacetylase inhibitors - molecular mechanisms of actions and clinical applications]
Aneta Grabarska1, Magdalena Dmoszyńska-Graniczka, Ewa Nowosadzka
1Katedra i Zakład Biochemii i Biologii Molekularnej Uniwersytetu Medycznego w Lublinie.
Abstract:
Histone deacetylases (HDACs) play an important role in the epigenetic regulation of gene expression implicated in cancer pathogenesis. Inhibitors of HDACs (HDI) are under investigation as novel anti-cancer drugs, which induce histone hyperacetylation. These agents modulate chromatin structure leading to transcriptional changes of a very large number of genes, which affect signaling pathways, inhibit cell cycle progression and angiogenesis, and induce apoptosis in cancer cells. Currently, several HDI are in clinical trials used in monotherapy or in combination with other cytostatics, showing promising anticancer effects. To date, more than 15 HDIs have been found as potential drugs. This paper reviews the molecular mechanisms of HDI action on cancer cells and summarizes clinical trials of the most promising HDIs in the treatment of patients with hematologic malignancies and solid tumors.
Insights
Histone deacetylase inhibitors (HDACis) show promise as anti-cancer drugs by altering gene expression and inducing cancer cell death. Clinical trials are evaluating these agents for hematologic malignancies and solid tumors.
Area of Science:
- Epigenetics
- Molecular Biology
- Oncology
Background:
- Histone deacetylases (HDACs) are key epigenetic regulators implicated in cancer.
- HDAC inhibitors (HDIs) are investigated as novel anti-cancer therapeutics.
- HDIs induce histone hyperacetylation, altering gene expression and chromatin structure.
Purpose of the Study:
- To review the molecular mechanisms of HDI action in cancer cells.
- To summarize clinical trials of promising HDIs for cancer treatment.
Main Methods:
- Review of molecular mechanisms of HDAC inhibition.
- Summary of clinical trial data for HDIs in hematologic malignancies and solid tumors.
Main Results:
- HDIs modulate chromatin structure, affecting numerous genes and pathways.
- HDIs inhibit cell cycle progression, angiogenesis, and induce apoptosis.
- Several HDIs show promising anti-cancer effects in clinical trials, used alone or in combination therapy.
Conclusions:
- HDIs represent a promising class of anti-cancer drugs with diverse mechanisms of action.
- Ongoing clinical trials are evaluating the efficacy of various HDIs in treating hematologic malignancies and solid tumors.
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