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Epigenetics of Schizophrenia
Anil Srivastava1, Oluwagbenga Dada1, Jessica Qian1
1Department of Psychiatry, University of Toronto.
Psychiatry Research
|October 12, 2021
Summary
Epigenetic factors like DNA methylation and micro-RNA may explain schizophrenia's genetic basis. Further research into these mechanisms could reveal new diagnostic and therapeutic biomarkers for schizophrenia.
Area of Science:
- Neuroscience
- Genetics
- Molecular Biology
Background:
- Schizophrenia (SCZ) is a complex psychotic disorder with significant heritability.
- Genetic studies have not fully elucidated the underlying causes of schizophrenia.
- Epigenetic mechanisms offer potential explanations for SCZ development by altering gene expression without changing DNA sequence.
Purpose of the Study:
- To review and synthesize current knowledge on epigenetic mechanisms implicated in schizophrenia.
- To highlight the role of DNA methylation, histone modification, and non-coding RNA in SCZ.
- To discuss epigenetic age acceleration, telomere shortening, and their relevance to schizophrenia.
Main Methods:
- Review of existing literature on DNA methylation in peripheral and post-mortem brain samples from SCZ patients.
- Analysis of studies investigating histone modifications and non-coding RNAs (e.g., micro-RNA) in schizophrenia.
- Examination of research on epigenetic age acceleration and telomere shortening in the context of SCZ.
Main Results:
- DNA methylation patterns are altered in both peripheral tissues and brain samples of individuals with schizophrenia.
- Histone modifications and non-coding RNAs, particularly micro-RNAs, play a significant role in SCZ pathogenesis.
- Epigenetic age acceleration and telomere shortening are associated with schizophrenia, suggesting a link to cellular aging processes.
Conclusions:
- Epigenetic mechanisms are crucial for understanding the complex etiology of schizophrenia.
- Micro-RNAs show promise as potential diagnostic and therapeutic biomarkers for SCZ.
- Further research is needed to fully elucidate epigenetic contributions to schizophrenia and develop targeted interventions.
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