Dissect Gender-Dependent Susceptibility SNPs in Progressive Osteoarthritis Using Regulator Motif Candidate of Genetic...

Area of Science:

• Genetics
• Osteoarthritis Research
• Molecular Biology

Background:

• Osteoarthritis (OA) exhibits gender-specific patterns, but the role of gender-specific regulatory single nucleotide polymorphisms (SNPs) in OA development is not well understood.
• Identifying these genetic factors could elucidate sex-based differences in OA susceptibility and progression.

Purpose of the Study:

• To identify gender-specific SNPs within transcription factor binding sites that are associated with osteoarthritis.
• To investigate the potential role of these SNPs in regulating gene expression related to OA.

Main Methods:

• Utilized a modified NF-κB binding motif to identify potential binding sites genome-wide, cross-referenced with the Taiwan BioBank SNP database.
• Conducted a case-control study with 533 OA patients and 614 controls, using logistic regression to analyze SNP associations.
• Validated functional assessments using the Genotype-Tissue Expression Portal database.

Main Results:

• Identified two novel OA-associated SNPs. rs73164856 in males acts as a protective factor for severe OA (OR: 0.17).
• rs545654 in females is a detrimental factor for severe OA (OR: 2.07).
• Gene expression analysis showed rs73164856 T allele correlates with lower AKR1B15 gene expression, while rs545654 T allele correlates with higher nNOS gene expression.

Conclusions:

• This research pinpoints susceptible gender-specific SNPs in NF-κB binding sites linked to severe osteoarthritis.
• The findings highlight the differential genetic influences of SNPs on OA risk based on gender.
• These discoveries contribute to understanding the genetic basis of advanced OA, considering sex-specific factors.