湖北地区汉族人群维生素D受体基因起始密码单核苷酸多态性与前列腺癌的相关性分析

目的 :了解维生素D受体 (vitaminDreceptor,VDR)基因起始密码单核苷酸多态性与前列腺癌的关系 ,探讨前列腺癌发病的分子机制。　方法 :提取 80例前列腺癌患者及 96例健康男性对照者外周血标本中基因组DNA ,应用聚合酶链反应 限制性片段长度多态性 (PCR RFLP)及DNA测序技术检测并分析了VDR基因起始密码单核苷酸多态性在两组中的分布。　结果 :前列腺癌病例和对照组FokⅠ等位基因频率分布均符合Hardy Weinberg定律 ,其FokⅠ多态位点FF、Ff、ff基因型分布频率分别为 32 .5 %、5 0 .0 %、17.5 %和 2 5 .0 %、5 3.13%、2 2 .87% ;等位基因F、f分布频率分别为 4 5 %、5 5 %和 5 1.5 6 %、4 8.4 4 % ,在湖北地区汉族前列腺癌患者及对照者中的分布频率差异无显著性 (P >0 .0 5 )。　结论 :VDR基因起始密码的单核苷酸多态性可能与低发病的湖北地区汉族人群的前列腺癌发生无关。

Association of Single Nucleotide Polymorphism of Vitamin D Receptor Gene Start Codon and the Suscepbility to Prostate Cancer in the Han Nationality in Hubei Area

OBJECTIVE: To investigate single nucleotide polymorphism of vitamin D receptor (VDR) gene start codon in the Han nationality in Hubei area and its relationship to the susceptibility to prostate cancer (PCa), and to study the possible mechanism for PCa. METHODS: The VDR genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 80 patients with PCa and 96 normal male controls from the Han nationality in Hubei area, using endonuclease Fok I. Direct sequencing was done in part of the PCR products. RESULTS: The frequency distribution of Fok I alleles in this cohort all followed the Hardy-Weinberg equilibrium. The distribution of genotypes and alleles had no significant difference between PCa patients and normal male controls( P > 0.05). CONCLUSION: The results indicated no significant relationship between Fok I polymorphism of VDR gene start codon and PCa in the Han nationality in Hubei area.