Single-nucleotide polymorphisms in SMAD3 are associated with chronic obstructive pulmonary disease
Ting Yang1, Binwu Ying, Xingbo Song
1Division of Pulmonary Disease, State Key Laboratory of Biotherapy, Chengdu, Sichuan 610041, People's Republic of China.
Experimental Biology and Medicine (Maywood, N.J.)
|May 14, 2010
Summary
Single-nucleotide polymorphisms (SNPs) in the Smad3 gene were analyzed for association with chronic obstructive pulmonary disease (COPD) in the Chinese population. The rs28683050 polymorphism showed a significant association with COPD risk.
Area of Science:
- Genetics
- Pulmonology
- Molecular Biology
Background:
- Chronic obstructive pulmonary disease (COPD) is a major global health concern with complex genetic underpinnings.
- The Smad3 gene plays a role in TGF-beta signaling, which is implicated in lung development and disease.
Purpose of the Study:
- To investigate the frequencies of single-nucleotide polymorphisms (SNPs) in the Smad3 gene within the Chinese population.
- To determine if specific Smad3 gene SNPs are associated with the risk of developing COPD.
Main Methods:
- Genotyping of nine intronic SNPs in the Smad3 gene using TaqMan polymerase chain reaction with minor groove binder probes.
- Comparison of SNP and genotype frequencies between COPD patients and healthy control subjects.
Main Results:
- The rs28683050 polymorphism exhibited significantly different allelic and genotypic frequencies between COPD patients and controls.
- The TT genotype frequency for rs28683050 was higher in COPD patients (14.2%) than controls (5.4%), with an odds ratio (OR) of 3.762.
- The T allele frequency for rs28683050 was also significantly higher in COPD patients (81.1%) compared to controls (66.4%), with an OR of 1.774.
Conclusions:
- The rs28683050 polymorphism in the Smad3 gene is potentially associated with an increased risk of COPD in the Chinese population.
- These findings contribute to understanding the genetic factors influencing COPD susceptibility.
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