Association and interaction of heat shock proteins B1 gene and tumor-suppressor protein p53 gene ;with chromosome damage levels among coke oven workers
10.3760/cma.j.issn.0253-9624.2016.10.012
- VernacularTitle:热休克蛋白B1基因、肿瘤抑制蛋白p53基因多态性与焦炉作业工人染色体损伤的关联及其交互作用分析
- Author:
Xiaoliang LI
1
,
2
;
Qifei DENG
;
Xiao ZHANG
;
Tian WANG
;
Zhuowang CHEN
;
Yansen BAI
;
Suhan WANG
;
Tangchun WU
;
Huan GUO
Author Information
1. 430030武汉，华中科技大学同济医学院公共卫生学院劳动卫生与环境卫生学系环境与健康教育部重点实验室
2. 珠海市慢性病防治中心职业卫生科
- Keywords:
Polymorphism,single nucleotide;
Polymorphism;
HSP27 Heat-Shock proteins;
Tumor suppressor protein p53;
Coke oven workers
- From:
Chinese Journal of Preventive Medicine
2016;50(10):900-906
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the association and interaction of heat shock proteins B1 (HSPB1) gene rs2868371 and tumor-suppressor protein p53 (TP53) gene rs1042522 polymorphisms with chromosome damage levels among coke oven workers. Methods We recruited 1 333 male workers from a state-run coke oven plant in Wuhan in September-October 2010. Among them, 949 who had worked in coke oven workplaces, including auxiliary facilities and bottom, side, and top ovens, were nominated as coke oven workers (i.e., exposed), and 384 administrative or medical staff whose workplaces were offices were used as controls. General characteristics and 5 ml of venous blood were collected from each participant. The plasma concentrations of benzo [a] pyrene-diolepoxide (BPDE)-albumin adducts and the lymphocytic micronucleus (MN) frequencies for each individual were detected by ELISA and cytokinesis-block micronucleus assay, respectively. Gene polymorphisms were genotyped using TaqMan assays via quantitative PCR (ABI Prism 7900HT), and the corresponding frequency ratios (FR) with 95%confidence intervals (CI) were computed for all assays. Results In the exposed group, the MN frequencies were higher in HSPB1 rs2868371 GC, CC, and GC+CC genotype carriers ((3.88 ± 2.88)‰, (4.00 ± 2.66)‰, and (3.91 ± 2.83)‰, respectively) than in rs2868371 GG genotype carriers ((3.52±2.67)‰;FR=1.10, 1.13, and 1.11;95%CI:1.02-1.19, 1.02-1.25, and 1.03-1.19, respectively), and the HSPB1 rs2868371C allele was associated with increased MN frequency (Ptrend=0.006). Further, in the exposed group, the MN frequencies were lower in TP53 rs1042522 CG and CG+GG genotype carriers ((3.63±2.61)‰and (3.66±2.61)‰, respectively) than in TP53 rs1042522 CC genotype carriers (3.95 ± 3.06)‰(FR=0.87 and 0.90;95%CI:0.83-0.96 and 0.84-0.97, respectively). The effect of gene-gene interaction between HSPB1, rs2868371, and TP53 rs1042522 on MN frequency was significant among coke oven workers (P=0.001). Further stratified analyses showed that the effects of the HSPB1 rs2868371C allele in increasing MN frequencies were robust in subjects aged>40 years (FR=1.07, 95% CI: 1.01-1.12), those working >20 years (FR=1.08, 95% CI: 1.02-1.14), those with BMI ≤24 kg/m2 (FR=1.07, 95% CI: 1.01-1.13), drinkers (FR=1.09, 95% CI: 1.02-1.16), and workers with higher BPDE-albumin adduct levels (FR=1.07, 95% CI: 1.01-1.13) (Ptrend=0.023, 0.013, 0.029, and 0.020, respectively). The decreasing effect of the TP53 rs1042522 G allele on MN frequencies was robust in subjects aged >40 years (FR=0.94, 95% CI: 0.89-0.99), those with BMI ≤24 kg/m2 (FR=0.94, 95% CI:0.88-0.99), and drinkers (FR=0.94, 95% CI: 0.88-1.00) (Ptrend=0.031, 0.023, and 0.038, respectively). In addition, there were interactions between HSPB1 rs2868371 and age and between HSPB1 rs2868371 and working years in terms of MN frequency (P=0.030 and 0.013, respectively). Conclusion In coke oven workers, the HSPB1 rs2868371 C and TP53 rs1042522 G alleles were associated with increased and decreased chromosome damage levels, respectively, and their interaction effect on chromosome damage levels was significant.
