Association between Mir-17-92 gene promoter polymorphisms and depression in a Chinese population

Area of Science:

• Genetics and Molecular Biology
• Neuroscience
• Psychiatry

Background:

• Depression is a prevalent, debilitating disease with significant societal impact.
• Single nucleotide polymorphisms (SNPs) can alter microRNA (miRNA) function, influencing neurological disease risk.
• The role of SNPs in the miR-17-92 promoter region concerning depression risk is not well understood.

Purpose of the Study:

• To investigate the association between specific polymorphisms (rs982873, rs9588884, rs1813389) in the miR-17-92 promoter and depression risk.
• To analyze these associations within a Chinese population.

Main Methods:

• Genome-wide association study (GWAS) and NCBI databases were utilized to identify relevant SNPs in miR-17-92 binding sites.
• A case-control study involving 555 depression cases and 541 controls was conducted across China.
• Gene sequencing was employed for genotyping blood samples.

Main Results:

• Genotypes rs982873 TC/CC, rs9588884 CG/GG, and rs1813389 AG/GG were significantly associated with a reduced risk of depression.
• Odds ratios (OR) ranged from 0.72 to 0.76, with corresponding P-values indicating statistical significance (P < 0.05).
• Stratified analysis revealed no significant correlation between these SNPs and family history of suicidal tendencies.

Conclusions:

• The studied polymorphisms (rs982873, rs9588884, rs1813389) in the miR-17-92 promoter region may act as protective factors against depression.
• These findings contribute to understanding the genetic underpinnings of depression.