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Epigenetic mechanisms in multiple sclerosis: implications for pathogenesis and treatment
Jimmy L Huynh1, Patrizia Casaccia
1Department of Neuroscience, Mount Sinai School of Medicine, New York, NY 10029, USA.
The Lancet. Neurology
|January 22, 2013
Summary
Understanding multiple sclerosis (MS) requires integrating genetic and environmental factors. Epigenetic changes in specific cells are key to how these factors influence MS.
Area of Science:
- Neuroimmunology
- Genetics
- Epigenetics
Background:
- Multiple sclerosis (MS) pathogenesis remains incompletely understood, particularly concerning the integration of epidemiological, genetic, and clinical data.
- The influence of environmental factors and genetic predisposition on MS presentation and treatment response is increasingly recognized.
- Molecular mechanisms linking environmental signals to gene expression, such as DNA methylation, histone modifications, and non-coding RNAs, are crucial but require further elucidation.
Purpose of the Study:
- To highlight the need for a comprehensive model of multiple sclerosis pathogenesis.
- To emphasize the integration of genetic susceptibility with cell-type specific epigenetic modifications.
- To underscore the role of environmental stimuli and aging in modulating these epigenetic changes.
Main Methods:
- Review and synthesis of current knowledge on multiple sclerosis epidemiology, genetics, and epigenetics.
- Discussion of molecular mechanisms including DNA methylation, histone modifications, and non-coding RNAs.
- Conceptual framework development for integrating diverse etiological factors in multiple sclerosis.
Main Results:
- Genetic susceptibility and environmental influences interact to shape multiple sclerosis disease course and treatment outcomes.
- Tissue- and cell-type specific epigenetic mechanisms translate environmental signals into altered gene expression.
- Specialized enzymes regulate these epigenetic modifications in a highly selective manner.
Conclusions:
- A holistic model of multiple sclerosis pathogenesis must incorporate genetic risk factors.
- Cell-type specific epigenetic alterations in the immune system and brain are critical in response to environmental factors and aging.
- Further research integrating genetic and epigenetic data is essential for advancing multiple sclerosis clinical management and therapeutic strategies.
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