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Common genetic variants in pre-microRNAs are associated with risk of coal workers' pneumoconiosis

Meilin Wang1, Yang Ye, Haiyang Qian

  • 1Department of Occupational Medicine and Environmental Health, Nanjing Medical University, 140 Hanzhong Road, Nanjing, China.

Journal of Human Genetics
|November 3, 2009
PubMed

Insights

Genetic variants in microRNAs (miRNAs) may influence coal workers' pneumoconiosis (CWP) risk. The miR-149 rs2292832 polymorphism was associated with increased CWP susceptibility, particularly in older individuals and those with significant dust exposure.

Area of Science:

  • Genetics
  • Molecular Biology
  • Occupational Health

Background:

  • microRNAs (miRNAs) are small noncoding RNAs regulating gene expression.
  • miRNAs are implicated in various biological processes, including cell proliferation and apoptosis.
  • Genetic variations within miRNAs could impact disease susceptibility.

Purpose of the Study:

  • To investigate the association between single-nucleotide polymorphisms (SNPs) in pre-microRNAs (pre-miRNAs) and the risk of coal workers' pneumoconiosis (CWP).

Main Methods:

  • A case-control study involving 496 CWP patients and 513 controls.
  • Genotyping of four SNPs (rs2910164, rs2292832, rs11614913, rs3746444) in pre-miRNAs (miR-146a, miR-149, miR-196a2, miR-499).
  • Statistical analysis to assess the association between genotypes and CWP risk, including subgroup analyses.

Main Results:

  • The miR-149 rs2292832 TT genotype showed a significantly increased risk of CWP (OR=1.31, 95% CI=1.01-1.69).
  • This increased risk was more pronounced in subgroups: aged > or =68 years, dust exposure > or =26 years, and ever smokers.
  • The miR-149 rs2292832 polymorphism was also associated with CWP stages II and III.

Conclusions:

  • The miR-149 rs2292832 polymorphism is a potential genetic factor contributing to CWP susceptibility.
  • This finding highlights the role of miRNA genetic variants in the pathogenesis of occupational lung diseases.
  • Further research is warranted to elucidate the functional mechanisms underlying this association.

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