Related Experiment Video
Updated: Jun 5, 2026
Assays for Validating Histone Acetyltransferase Inhibitors
Published on: August 6, 2020
HDACi--going through the mechanisms
Malgorzata Wanczyk1, Katarzyna Roszczenko, Katarzyna Marcinkiewicz
1Department of Immunology, Centre of Biostructure Research, Medical University of Warsaw, Banacha 1A, F building, 02-097 Warsaw, Poland.
Abstract:
Histone deacetylases inhibitors (HDACi) have recently emerged as potent antitumor treatment modality. They are currently tested in many phase I, II and III clinical trials as single agents as wells as in combination schemes. They have demonstrated promising antitumor activity and favorable clinical outcome. Histone deacetylases (HDACs) are involved in the process of epigenetic regulation of gene expression. Epigenetic changes are believed to be crucial for the onset and progression of cancer and have recently gained remarkable attention. Since epigenetic regulation of gene expression is a reversible process, targeting histone deacetylases provides a good rationale for anticancer therapy. The acetylation status of histones regulates the organization of chromatin and the access of transcription factors. Moreover, functions of many non-histone proteins are controlled by acetylation. The broad and complicated influences of HDACi on various molecular processes may account for the observed pleiotropic effects. In this review we summarize recent advances in the understanding of biology of HDACs and mechanism of action of their inhibitors.
Insights
Histone deacetylases inhibitors (HDACi) show promise as cancer treatments by targeting epigenetic regulation. These compounds influence gene expression and chromatin structure, offering a reversible approach to anticancer therapy.
Area of Science:
- Oncology
- Epigenetics
- Molecular Biology
Background:
- Histone deacetylases inhibitors (HDACi) are emerging as a potent anticancer treatment modality.
- Epigenetic dysregulation, including histone acetylation, is critical in cancer development and progression.
- Targeting histone deacetylases (HDACs) offers a rational, reversible strategy for cancer therapy.
Purpose of the Study:
- To review recent advances in understanding HDAC biology and the mechanisms of action of HDAC inhibitors.
- To explore the role of HDACs in epigenetic regulation and their implications in cancer.
- To summarize the clinical relevance and therapeutic potential of HDAC inhibitors.
Main Methods:
- Literature review of preclinical and clinical studies on HDAC inhibitors.
- Analysis of the molecular mechanisms underlying HDAC inhibition.
- Synthesis of current knowledge on HDAC biology and its role in cancer.
Main Results:
- HDAC inhibitors demonstrate promising antitumor activity in various clinical trials.
- HDACs regulate chromatin structure and gene transcription through acetylation.
- HDAC inhibition affects numerous molecular processes, leading to pleiotropic effects.
Conclusions:
- HDAC inhibitors represent a significant therapeutic strategy in oncology.
- Understanding HDAC biology is crucial for developing effective epigenetic cancer therapies.
- Further research into HDAC inhibitors' mechanisms and clinical applications is warranted.
Related Concept Videos
01:26Phase Contrast and Differential Interference Contrast Microscopy
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
01:05Mechanism of Ciliary Motion
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
01:28Amides to Carboxylic Acids: Hydrolysis
Acid-catalyzed hydrolysis:
Hydrolysis of amides under acidic conditions yields carboxylic acids. Since the reaction occurs slowly, hydrolysis requires the conditions of heat.
The mechanism begins with the protonation of the carbonyl oxygen by the acid catalyst. The protonation makes the amide carbonyl carbon more...
01:18Indirect-Acting Cholinergic Agonists: Mechanism of Action
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex, leading to...
01:29Reaction Mechanisms: Rate-limiting Step Approximation
02:33Hedgehog Signaling Pathway