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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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Histone H4 acetylation regulates behavioral inter-individual variability in zebrafish
Angel-Carlos Román1,2, Julián Vicente-Page3,4, Alfonso Pérez-Escudero4,5
1Champalimaud Neuroscience Programme, Champalimaud Centre for the Unknown, Avenida Brasília s/n, 1400-038, Lisbon, Portugal. angel.roman@neuro.fchampalimaud.org.
Genome Biology
|April 27, 2018
Summary
Histone modifications influence zebrafish behavior. Impairing histone deacetylation reduces individual behavioral differences, suggesting stochasticity in this pathway generates variability.
Area of Science:
- Neuroscience
- Genetics
- Developmental Biology
Background:
- Animal behavior exhibits variability even within genetically identical populations.
- The mechanisms driving this behavioral variability are not fully understood.
- Zebrafish (Danio rerio) are used as a model organism to study behavior.
Purpose of the Study:
- To investigate the role of histone modifications in generating behavioral variability.
- To explore the influence of histone deacetylation on individual behavior.
Main Methods:
- Behavioral assays on zebrafish larvae in controlled environments.
- Manipulation of the histone deacetylation pathway.
- Analysis of histone H4 acetylation levels, specifically H4K12.
- Identification of genomic regions associated with acetylation changes.
- Investigation of the YY1-HDAC1 complex's role.
Main Results:
- Individual zebrafish larvae display consistent behaviors.
- Impairing histone deacetylation significantly reduces behavioral variability.
- Low histone H4 acetylation (H4K12) correlates with deviation from average population behavior.
- Specific genomic regions show reduced acetylation correlated with behavioral divergence.
- The YY1-HDAC1 complex is implicated in deacetylating these regions.
Conclusions:
- Stochasticity in histone deacetylation contributes to genetic-independent behavioral variability.
- Histone modifications play a key role in shaping individual behaviors.
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