Abstract
Background
Epigenetic regulation is a level of transcriptional regulation that occurs in addition to the genetic programming found in biological systems. In the brain, the epigenetic machinery gives the system an opportunity to adapt to a given environment to help not only the individual but also the species survive and expand. However, such a regulatory system has risks, as mutations resulting from epigenetic regulation can cause severe neurological or psychiatric disorders.
Objective
Here, we review the most recent findings regarding the epigenetic mechanisms that control the activitydependent gene transcription leading to synaptic plasticity and brain function and the defects in these mechanisms that lead to neurological disorders.
Methods
A search was carried out systematically, searching all relevant publications up to June 2017, using the PubMed search engine. The following keywords were used: “activity induced epigenetic,” “gene transcription,” and “neurological disorders.”
Results
Awide range of studies focused on the roles of epigenetics in transgenerational inheritance, neural differentiation, neural circuit assembly and brain diseases. Thirty-one articles focused specifically on activity-induced epigenetic modifications that regulated gene transcription and memory formation and consolidation.
Conclusion
Activity-dependent epigenetic mechanisms of gene expression regulation contribute to basic neuronal physiology, and defects were associated with an elevated risk for brain disorders.
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References
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The work is supported by grants from NSFC (31371059), NSFC (31671104), and Beijing Municipal Science & Technology Commission (Z161100000216126) to J.-S.G. J.-S.G. is supported by Beijing Nova program (2015B057).
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Guan, JS., Xie, H. & Liu, SX. Epigenetic regulators sculpt the plastic brain. Front. Biol. 12, 317–332 (2017). https://doi.org/10.1007/s11515-017-1465-z
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DOI: https://doi.org/10.1007/s11515-017-1465-z