在CLSA队列中对基因和空气污染对COPD的相互作用进行全基因分析
Ugochukwu Odimba1, Jamie Farrell2, Mohsen Sadatsafavi3
1Clinical Epidemiology Unit, Division of Population Health and Applied Health Sciences, Faculty of Medicine, Memorial University, St. John's, Newfoundland and Labrador, A1B 3X5, Canada.
Environmental research
|January 22, 2026
概括
这项研究确定了特定的遗传标记,这些标记改变了空气污染 (如PM2.5和NO2) 如何影响慢性阻塞性肺病 (COPD) 风险. 这些发现揭示了COPD对环境暴露敏感性的遗传影响.
科学领域:
- 环境健康 环境健康
- 遗传学 是一个遗传学.
- 肺部病理学 肺部病理学
背景情况:
- 环境空气污染是已知导致慢性阻塞性肺病 (COPD) 的原因之一.
- 影响COPD对空气污染易感性的遗传因素尚未得到充分了解.
研究的目的:
- 进行全基因组相互作用分析,以找到修改空气污染和COPD之间的联系的遗传标记.
- 调查与颗粒物 (PM2.5),二氧化 (NO2) 和臭氧 (O3) 暴露有关的遗传敏感性.
主要方法:
- 分析了来自16839名加拿大老龄化纵向研究参与者的数据,包括螺旋测量和全基因组基因型数据.
- 使用单核酸多态 (SNP) -空气污染物相互作用条件的后勤回归模型,应用严格的邦费罗尼校正 (p <7.74 × 10^-8).
- 根据住宅邮政编码分配的多年空气污染暴露估计 (2012-2015年).
主要成果:
- 在PM2.5和SNP之间发现了显著的相互作用rs3762953 (CEP72/TPPP) 和rs72802672 (WFDC1).
- 在NO2和SNP之间发现了显著的相互作用rs2585043 (ADAMTSL3 / SH3GL3),rs6809120 (ADAMTS9),rs6761941 (EPCAM-DT / CALM2),rs113083358 (DLG2) 和rs17801230 (FASTKD2 / CPO).
- 相关基因参与了微管/细胞功能,细胞外矩阵重塑,蛋白酶调节,炎症,光滑肌肉收缩性和线粒体功能.
结论:
- 遗传变异可以改变暴露于空气污染和COPD易感性之间的关联,即使在污染水平较低的地区.
- 鉴定到的基因位点为空气污染如何导致COPD提供了机制性的见解.
- 研究结果强调了遗传因素在环境疾病易感性中的作用,尽管没有暗示直接的临床应用.
相关概念视频
Genome Size and the Evolution of New Genes
9.0K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.0K
Genome Size and the Evolution of New Genes
3.3K
3.3K
Genome-wide Association Studies-GWAS
15.4K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
15.4K
Genomics
39.8K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
39.8K
Gene-Environment Interactions
1.1K
Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
1.1K
COPD: Pathogenesis and Clinical Features
1.8K
Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
1.8K


