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Updated: Oct 14, 2026

Simultaneous Measurement of HDAC1 and HDAC6 Activity in HeLa Cells Using UHPLC-MS
Published on: August 10, 2017
Inhibition of histone deacetylases: a new strategy to target epigenetic modifications for anticancer treatment
1Roche Diagnostics GmbH, Penzberg, Germany. Ulrich.Weidle@roche.com
Abstract:
The role of epigenetic modifications due to deregulated acetylation of nucleosomes with respect to its role in progression and etiology of human cancer is discussed. Among the mediators of these phenomena are the histone deacetylases, a class of enzymes consisting of at least two subfamilies with a total of at least 7 members in mammals. Depending on the cell-type, inhibition of HDACs in cancer cells can lead to transcriptional activation and silencing of about 2% of human genes, cell-cycle arrest and induction of apoptosis and differentiation in vitro and in vivo. This paper discusses several inhibitors of HDACs primarily derived from natural sources, their physiological consequences in different in vitro and in vivo cancer-related systems, their stage of preclinical and clinical development as well as their potential as antineoplastic agents. It is of paramount importance to elucidate the molecular mechanisms resulting in cell-cycle arrest, apoptosis or differentiation after inhibition of HDACs and to investigate the physiological function of the different HDAC isoenzymes and their deregulation in human cancers in order to devise optimized therapeutic intervention in cancer patients.
Insights
Histone deacetylase (HDAC) inhibitors, often from natural sources, show promise in cancer treatment by regulating gene expression, cell-cycle arrest, and apoptosis. Further research into HDAC mechanisms is crucial for optimized cancer therapies.
Area of Science:
- Epigenetics
- Cancer Biology
- Pharmacology
Background:
- Epigenetic modifications, specifically nucleosome acetylation, are implicated in cancer etiology and progression.
- Histone deacetylases (HDACs) are key enzymes mediating these epigenetic changes.
- HDACs comprise at least two subfamilies with at least 7 members in mammals.
Purpose of the Study:
- To discuss the role of epigenetic modifications in cancer.
- To review natural source-derived histone deacetylase inhibitors (HDACis).
- To explore the potential of HDACis as antineoplastic agents.
Main Methods:
- Review of literature on HDAC inhibitors.
- Analysis of physiological consequences in cancer-related systems (in vitro and in vivo).
- Assessment of preclinical and clinical development stages of HDAC inhibitors.
Main Results:
- HDAC inhibition can lead to significant transcriptional changes (affecting ~2% of human genes).
- HDAC inhibition induces cell-cycle arrest, apoptosis, and differentiation in cancer cells.
- Several natural source-derived HDAC inhibitors are in preclinical and clinical development.
Conclusions:
- HDAC inhibitors demonstrate potential as anticancer agents.
- Elucidating molecular mechanisms of HDAC inhibition is vital for therapeutic optimization.
- Understanding HDAC isoenzyme function and deregulation in cancer is critical for developing targeted therapies.
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