Multiple sclerosis genetic and non-genetic factors interact through the transient transcriptome.

Area of Science:

• Genetics
• Neuroimmunology
• Transcriptomics

Background:

• Understanding multiple sclerosis (MS) etiology requires integrating genetic and non-genetic factors.
• Previous research suggests heterogeneity and stochasticity in MS pathogenesis.
• The role of the transient transcriptome (TT) in MS etiology is largely unexplored.

Purpose of the Study:

• To investigate the transient transcriptome (TT) as a unifying model for MS etiology.
• To identify genomic regions associated with MS risk factors within the TT.
• To explore the interplay between genetic and non-genetic determinants of MS.

Main Methods:

• Colocalization analysis of MS-associated GWAS variants with TT-coding regions.
• Integration of DNA binding site data for MS-related molecular transducers.
• Analysis of intergenic and intronic regions with short RNA half-lives.

Main Results:

• Genomic regions encoding the TT are significantly enriched for MS-associated GWAS variants.
• These TT regions also contain DNA binding sites for factors linked to non-genetic MS determinants (e.g., vitamin D, Epstein-Barr virus).
• TT-coding regions are identified as key "hotspots" in MS etiopathogenesis.

Conclusions:

• The transient transcriptome offers a novel framework for understanding MS etiology.
• TT-coding regions represent critical interaction sites for genetic and non-genetic MS risk factors.
• Further research on cell-specific transcriptomes is needed to elucidate MS pathogenesis.