摘要
目的 探讨DNA甲基化转移酶3B(DNMT3B)基因与多巴胺D1受体(DRD1)基因交互作用对精神分裂症患病风险的影响.方法 选取DNMT3B基因2个标签SNP(rs2424908和rs6119954)以及DRD1基因5个标签SNP(rs4532、rs5326、rs2168631、rs6882300和rs267418),采用TaqMan探针SNP基因分型技术对365例精神分裂症患者和365名健康对照者进行检测,使用多因子降维法软件(MDR)分析基因-基因交互作用.结果 DNMT3B基因rs6119954位点基因型分布在患者组与对照组之间差异有统计学意义(χ2=8.06,P=0.018);MDR分析结果显示DNMT3B与DRD1基因相互作用存在于两位点模型(rs6119954-rs267418)(OR=1.79,95%CI:1.29~2.47;χ2=12.51,P=0.0004),三位点模型(rs6119954-rs5326-rs267418)(OR=2.36,95%CI:1.73~3.22;χ2=29.33,P<0.0001)以及四位点模型(rs2424908-rs6119954-rs5326-rs267418)(OR=3.08,95% CI:2.24~4.24;χ2=48.88,P<0.0001).结论 DNMT3B与DRD1基因存在交互作用,并可能增加精神分裂症的发病风险.
Objective To identify the impact of gene-gene interaction between DNMT3B and DRD1 on the risk of schizophrenia. Methods Two SNPs (rs2424908 and rs6119954) within DNMT3B and five SNPs (rs4532, rs5326, rs2168631, rs6882300 and rs267418 ) within DRD1 were genotyped in 365 schizophrenic patients and 365 healthy controls. The gene-gene interaction between DNMT3B and DRD1 was analyzed by Multifactor Dimensionality Reduction (MDR) software. Results The frequency of genotypes of rs6119954 within DNMT3B was significantly higher in patients than that in controls (χ2 = 8. 06 ,P =0. 018 ).MDR revealed that the significance were shown in patterns with 2 SNPs ( rs6119954-rs267418 ) ( OR =1.79, 95% CI:1.29-2.47;χ2 =12.51, P=0.0004) , 3 SNPs (rs6119954-rs5326-rs267418) (OR=2. 36, 95% CI: 1.73 - 3.22;χ2 = 29. 33, P 〈 0. 0001 ) and 4 SNPs ( rs2424908-rs6119954-rs5326-rs267418) (OR=3.08, 95% CI:2.24 -4.24;χ2 =48.88, P〈0. 0001). Conclusion The gene-gene interaction between DNMT3B and DRD1 may exist and increase the risk for schizophrenia.
出处
《中华医学杂志》
CAS
CSCD
北大核心
2010年第43期3059-3062,共4页
National Medical Journal of China
基金
国家自然科学基金(30500181)
上海市自然科学基金(10ZR1425700)