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MMP14 gene polymorphisms in chronic obstructive pulmonary disease

Wataru Saitoh1, Tohru Sakamoto, Ahmed E Hegab

  • 1Department of Pulmonary Medicine, Institute of Clinical Medicine, Graduate School of Comprehensive Human Sciences and University Hospital, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.

International Journal of Molecular Medicine
|March 10, 2006
PubMed

Insights

Genetic variations in the MMP14 gene were studied in relation to Chronic Obstructive Pulmonary Disease (COPD). A specific MMP14 gene haplotype showed a higher frequency in Egyptian COPD patients, suggesting a potential role in COPD pathogenesis.

Area of Science:

  • Genetics
  • Pulmonology
  • Molecular Biology

Background:

  • Proteinase/antiproteinase imbalance is central to Chronic Obstructive Pulmonary Disease (COPD) pathogenesis.
  • Matrix metalloproteinases (MMPs), particularly MMP14, degrade lung extracellular matrix and are implicated in COPD development.
  • Genetic polymorphisms in MMP genes may alter enzyme activity, potentially contributing to lung matrix degradation and COPD.

Purpose of the Study:

  • To investigate the association between polymorphisms in the Matrix Metalloproteinase 14 (MMP14) gene and the risk of developing Chronic Obstructive Pulmonary Disease (COPD).
  • To analyze the relationship between specific MMP14 gene single nucleotide polymorphisms (SNPs) and COPD in Japanese and Egyptian populations.

Main Methods:

  • A case-control study involving 96 COPD patients and 61 controls (Japanese) and 106 COPD patients and 72 controls (Egyptian).
  • Genotyping was performed for seven single nucleotide polymorphisms (SNPs) in the MMP14 gene: -165 G/T, -72 G/A, +221 C/T, +6727 C/G, +6767 G/A, +7096 T/C, and +8153 G/A.
  • Statistical analysis included genotype frequency distribution and haplotype analysis, with corrections for multiple comparisons.

Main Results:

  • No significant differences in genotype frequencies for the studied MMP14 SNPs were observed between COPD patients and controls in either ethnic group after correcting for multiple comparisons.
  • Haplotype analysis revealed that the specific haplotype -165 T : +221 T : +6727 C : +7096 C was significantly more frequent in the Egyptian COPD patient group compared to their controls (pcorr = 0.0063).

Conclusions:

  • While individual MMP14 SNPs were not strongly associated with COPD risk across both populations, a specific haplotype (-165 T : +221 T : +6727 C : +7096 C) may play a role in the pathogenesis of COPD, particularly in the Egyptian population.
  • Further research is warranted to elucidate the functional impact of this MMP14 haplotype on lung matrix degradation and COPD development.

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