Abstract:
:Lung inflammation is the major pathogenetic feature for both chronic obstructive pulmonary disease (COPD) and lung cancer. The nuclear factor-kappa B (NFκB) and its inhibitor (IκB) play crucial roles in inflammatory. Here, we tested the hypothesis that single nucleotide polymorphisms (SNPs) in NFκB/IκB confer consistent risks for COPD and lung cancer. Four putative functional SNPs (NFκB1: -94del>insATTG; NFκB2: -2966G>A; IκBα: -826C>T, 2758G>A) were analyzed in southern and validated in eastern Chineses to test their associations with COPD risk in 1,511 COPD patients and 1,677 normal lung function controls, as well as lung cancer risk in 1,559 lung cancer cases and 1,679 cancer-free controls. We found that the -94ins ATTG variants (ins/del + ins/ins) in NFκB1 conferred an increased risk of COPD (OR 1.27, 95% CI 1.06-1.52) and promoted COPD progression by accelerating annual FEV1 decline (P = 0.015). The 2758AA variant in IκBα had an increased risk of lung cancer (OR 1.53, 95% CI 1.30-1.80) by decreasing IκBα expression due to the modulation of microRNA hsa-miR-449a but not hsa-miR-34b. Furthermore, both adverse genotypes exerted effect on increasing lung cancer risk in individuals with pre-existing COPD, while the -94del>insATTG did not in those without pre-existing COPD. However, no significant association with COPD or lung cancer was observed for -2966G>A and -826C>T. Our data suggested a common susceptible mechanism of inflammation in lung induced by genetic variants in NFκB1 (-94del>ins ATTG) or IκBα (2758G>A) to predict risk of COPD or lung cancer.
journal_name
Hum Genetjournal_title
Human geneticsauthors
Huang D,Yang L,Liu Y,Zhou Y,Guo Y,Pan M,Wang Y,Tan Y,Zhong H,Hu M,Lu W,Ji W,Wang J,Ran P,Zhong N,Zhou Y,Lu Jdoi
10.1007/s00439-013-1264-9subject
Has Abstractpub_date
2013-04-01 00:00:00pages
451-60issue
4eissn
0340-6717issn
1432-1203journal_volume
132pub_type
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