Possible genetic cross-talk between Down syndrome and obstructive sleep apnea revealed by transcriptomic analysis

Area of Science:

• Genomics
• Bioinformatics
• Medical Genetics

Background:

• Down syndrome (DS) is associated with a higher incidence of obstructive sleep apnea (OSA).
• OSA exacerbates cognitive impairment in individuals with DS.
• The underlying genetic links between DS and OSA are not fully understood.

Purpose of the Study:

• To investigate the shared genetic mechanisms between DS and OSA using a bioinformatics approach.
• To identify common differentially expressed genes (DEGs) and regulatory networks.

Main Methods:

• Downloaded transcriptomic datasets for DS (GSE59630) and OSA (GSE135917) from the Gene Expression Omnibus (GEO).
• Identified common DEGs, performed Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses.
• Constructed protein-protein interaction (PPI), TF-gene, and TF-miRNA regulatory networks.

Main Results:

• Identified 229 common DEGs between DS and OSA.
• Found that oxidative stress and inflammatory responses are critical in the pathogenesis of both conditions.
• Discovered ten significant hub genes (e.g., TLR4, SOD1, NFE2L2) as potential therapeutic targets.

Conclusions:

• DS and OSA exhibit overlapping pathogenic pathways.
• Commonly identified genes and signaling pathways may represent novel therapeutic targets for both DS and OSA.
• This study provides a foundation for developing targeted therapies addressing the shared genetic basis.