目的分析宁夏汉族人群CD2AP的rs9296559位点多态性与晚发性阿尔茨海默病(LOAD)是否存在关联。方法采用病例-对照研究,提取研究对象的外周血DNA,用ARRAY i PLEX行CD2AP基因的rs9296559位点单核苷酸多态性(SNP)的表达分布情况。结果 L...目的分析宁夏汉族人群CD2AP的rs9296559位点多态性与晚发性阿尔茨海默病(LOAD)是否存在关联。方法采用病例-对照研究,提取研究对象的外周血DNA,用ARRAY i PLEX行CD2AP基因的rs9296559位点单核苷酸多态性(SNP)的表达分布情况。结果 LOAD组和对照组的C等位基因频率分布比较差异有统计学意义(P〈0.001,OR=1.52,95%CI:1.18-1.97)。结论 CD2AP基因与宁夏汉族人群LOAD有相关性,其rs9296559 SNP位点C等位基因为危险等位基因。展开更多
The flower’s meristematic characteristic gene AP1 was introduced into Chrysanthemum morifolium cv. ‘Yu Ren Mian’ mediated by Agrobacterium tumefaciens.The factors influencing genetic transformation protocol were st...The flower’s meristematic characteristic gene AP1 was introduced into Chrysanthemum morifolium cv. ‘Yu Ren Mian’ mediated by Agrobacterium tumefaciens.The factors influencing genetic transformation protocol were studied.The results showed that the leaf explants precultured for 2~8 hours or not precultured were best for transformation by A. tumefaciens. The suitable concentration of bacterial and the time for infecting was OD_ 600 0.5 for 10 minutes. Leaves were cocultivated with bacterial at 23~25 ℃ for 2 days,then delayed selection for 3 days. Kan^r plant were selected by increased selective press from 5 mg·L ~ -1 G418 to 7.5 mg5L~ -1 G418 followed by 10 mg5L~ -1 G418. The integration of AP1 gene into C. morifolium ‘Yu Ren Mian’ was confirmed by PCR and Southern blotting.Two of transgenic plants bloomed 15 days earlier than untransformed plants.展开更多
文摘The flower’s meristematic characteristic gene AP1 was introduced into Chrysanthemum morifolium cv. ‘Yu Ren Mian’ mediated by Agrobacterium tumefaciens.The factors influencing genetic transformation protocol were studied.The results showed that the leaf explants precultured for 2~8 hours or not precultured were best for transformation by A. tumefaciens. The suitable concentration of bacterial and the time for infecting was OD_ 600 0.5 for 10 minutes. Leaves were cocultivated with bacterial at 23~25 ℃ for 2 days,then delayed selection for 3 days. Kan^r plant were selected by increased selective press from 5 mg·L ~ -1 G418 to 7.5 mg5L~ -1 G418 followed by 10 mg5L~ -1 G418. The integration of AP1 gene into C. morifolium ‘Yu Ren Mian’ was confirmed by PCR and Southern blotting.Two of transgenic plants bloomed 15 days earlier than untransformed plants.