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Epigenetic perspectives on systemic autoimmune disease
Panagiota Karagianni1, Athanasios G Tzioufas1
1Department of Pathophysiology, School of Medicine, University of Athens, Mikras Asias Str 75, 115 27, Athens, Greece.
Journal of Autoimmunity
|August 19, 2019
Summary
Epigenetic changes, such as DNA methylation and histone modifications, are linked to autoimmune diseases. These alterations may serve as biomarkers and potential therapeutic targets for immune system disorders.
Area of Science:
- Immunology
- Genetics
- Molecular Biology
Background:
- Autoimmune diseases involve immune system overreactivity to self-antigens, leading to tissue damage.
- While the exact causes are unknown, genetic, microbial, environmental, and psychological factors contribute.
- Epigenetic modifications, like DNA methylation and histone acetylation/methylation, mediate genome-environment interactions and regulate cellular functions.
Purpose of the Study:
- To explore the role of epigenetic alterations in the development and progression of autoimmune diseases.
- To investigate how epigenetic changes influence gene expression and immune cell function in patients.
- To assess the potential of epigenetic modifications as biomarkers and therapeutic targets for autoimmune conditions.
Main Methods:
- Analysis of epigenetic modifications (DNA methylation, histone acetylation/methylation) in patient-derived cells and tissues.
- Correlation of specific epigenetic patterns with disease phenotypes and gene expression levels.
- Detection of altered levels of enzymes involved in epigenetic mark regulation and effector proteins.
Main Results:
- Significant epigenetic alterations identified in autoimmune disease patients compared to healthy individuals.
- Specific epigenetic changes, such as reduced DNA methylation and increased histone acetylation, correlate with increased expression of certain genes (e.g., interferon-inducible genes).
- Epigenetic differences, including those on the X chromosome, may contribute to disease susceptibility and immune reactivity.
Conclusions:
- Epigenetic modifications are significantly altered in autoimmune diseases and are associated with disease phenotypes.
- While the causal relationship is still under investigation, epigenetic alterations are crucial for understanding pathogenesis.
- Epigenetic marks show promise as biomarkers for disease status and treatment response, and epigenetic factors are emerging as therapeutic targets.
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