Survivin基因启动子区-31C/G多态性与散发性 结直肠癌遗传易感性的关系

 【目的】 探讨生存素Survivin基因启动子区-31C/G单核苷酸多态性与中国华南地区散发性结直肠癌(CRC)遗传易感性的关系&#65377; 【方法】 采用聚合酶链反应-限制性片段长度多态性法(PCR-RFLP)检测华南地区711例健康人和702例CRC的Survivin基因-31C/G位点单核苷酸多态性&#65377;【结果】 结直肠癌患者CC基因型的频率明显高于对照人群(36.35% vs. 26.2 %, χ2 = 17.89, P < 0.001),与CC基因型相比,CG&#65380;GG基因型和等位基因G携带者的CRC发病风险分别显著下降至0.61倍(95% CI = 0.46 ~ 0.80, P < 0.001)&#65380;0.52倍(95% CI = 0.38 ~ 0.71, P < 0.001)和0.58倍(95% CI = 0.45 ~ 0.74, P < 0.001)&#65377;【结论】 Survivin基因-31C/G多态性与CRC发病风险有关,-31G变异基因型是中国南方人群散发性结直肠癌独立保护因素&#65377;

Association between Survivin Promoter-31C/G Polymorphism and Genetic Susceptibility to Sporadic Colorectal Cancer

[Objective] To investigate the association between -31C/G polymorphism in the promoter of survivin gene and the susceptibility to sporadic colorectal cancer in southern Chinese population. [Methods] Survivin-31C/G genotypes were determined by polymerase chain reaction-restriction fragment length polymorpbism (PCR-RFLP) in 711 healthy controls and 702 CRC cases. [Results] The number of CRC patients carrying with CC genotype was much higher than those of controls (36.5 % vs. 26.12%, X~2=17.89, P<0.001). Compared with CC genotypes, CG, GG genotypes and G allele carriers had a significantly decreased risk of CRC, with the decrease being 0.61-fold (95% CI=0.46-0.81, P<0.001), 0.52-fold (95% CI=0.38-0.71, P<0.001) and 0.58-fold (95% CI=0.45-0.74, P<0.001), respectively. [Conclusion] Survivin gene -31C/G polymorphism is associated with sporadic CRC risk, the G variant genotypo is the independent protective factors against sporadic CRC in soutbem Chinese population.