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Purification of H3 and H4 Histone Proteins and the Quantification of Acetylated Histone Marks in Cells and Brain Tissue
Published on: November 30, 2018
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Sodium valproate (VPA) interactions with DNA and histones.
Benedicto de Campos Vidal1, Maria Luiza S Mello1
1Department of Structural and Functional Biology, Institute of Biology, University of Campinas (Unicamp), 13083-862 Campinas, SP, Brazil.
International Journal of Biological Macromolecules
|July 4, 2020
Summary
Sodium valproate (VPA), an epilepsy drug, interacts with DNA and histones. This epigenetic agent alters DNA structure and histone conformations, offering insights into its pharmacological potential.
Area of Science:
- Biochemistry
- Molecular Biology
- Epigenetics
Background:
- Valproic acid/sodium valproate (VPA) is a common anti-seizure medication.
- VPA is recognized as an epigenetic agent influencing DNA and histone methylation and acetylation.
- Recent findings suggest VPA may interact with histone H1 and DNA.
Purpose of the Study:
- To investigate the interaction of sodium valproate (VPA) with DNA and histones H1 and H3.
- To elucidate the structural and conformational changes induced by VPA binding.
Main Methods:
- High-performance polarization microscopy.
- Fourier-transform infrared (FTIR) microspectroscopy.
- Analysis of VPA-DNA and VPA-histone mixtures prepared as hemispheres.
Main Results:
- VPA demonstrated interaction with both DNA and histones.
- Changes in the textural superstructure and molecular order of DNA were observed, potentially via van der Waals forces.
- Alterations in the conformations of histone H1 and H3 were detected, likely due to electrostatic binding.
Conclusions:
- VPA interacts with DNA and histones, impacting their structure and conformation.
- These interactions contribute to understanding the epigenetic mechanisms and pharmacological effects of VPA.
- Further research using complementary methods is needed to define precise interaction sites and mechanisms.
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