FKBP6基因278C/A单核苷酸多态性与原发无精症相关研究

Possible association between 278C/A single nucleotide polymorphism of FKBP6 and idiopathic azoospermia

目的对FKBP6基因第3、4外显子进行突变和多态性筛查,研究第3外显子278C/A位点及第2内含子C/T位点(rs7797242)在无精症患者和正常男性中的多态性,初步探讨与原发无精症的相关性。方法采用变性高效液相色谱和聚合酶链反应-限制性片段长度多态性方法,对第3、4外显子进行突变和多态性筛查,对177例无精症患者和231名正常男性的278C/A和C/T(rs7797242)多态性进行基因分型。结果278C和278A等位基因频率符合Hardy-Weinberg平衡。无精症患者278A显著低于正常对照,差异有统计学意义(P<0.05)。C/T多态性在两组中均未检出,第3、4外显子未筛查到新的变异。结论278A等位基因可能与原发无精症相关。C/T(rs7797242)及370G/A,430G/C,467T/C,468G/A在中国人群中非常罕见。

Objective To investigate 2 polymorphism sites in exon 3 and intron 2 of FKBP6 in Chinese population, while screening the gene mutations and polymorphisms in exons 3, 4 of FKBP6, and the association of these polymorphisms with azoospermia. Methods Possible variations of exons 3, 4 and genotypes and frequencies of 2 polymorphic loci were examined by denaturing high-performance liquid chromatography (DHPLC) and PCR-restriction fragment length polymorphism(PCR-RFLP) technique in 177 azoospermia patients and 231 control individuals. Results The observed allele frequencies conformed well to Hardy-Weinberg equilibrium. The frequency of 278A allele was significantly higher in controls than that in patients (P<0.05). C/T(rs7797242)polymorphism was not found in either group and variations in exons 3, 4 were not detected. Conclusion 278A polymorphism of FKBP6 gene was associated with idiopathic azoospermia, while C/T, 370G/A, 430G/C, 467T/C, 468G/A polymorphisms might be very rare in Chinese population.