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中国人St14/TaqⅠRFLPs及其在甲型血友病基因连锁分析与产前基因诊断中的应用
The RFLPs of St14/Taq I in Chinese and Its Application to Gene Analysis and Prenatal Diagnosis of Hemophilia A
【摘要】 St 14(DXS 52)是人X染色体长臂远端的一段基因外DNA序列,与FVⅢ基因紧密连锁。我们分析了95个中国人的St 14/Taq I RFLPs,在44条无遗传关系的X染色体中,St14/Taq 13.6 kb片段出现的频率为31%而4.5kb、4.1kb片段出现的频率则相对较低,与国外报道明显不同。以此RFLPs作为FVⅢ基因的遗传标志,我们分析了8个甲型血友病家系。3个家系中有缺陷FVⅢ基因的可以用此RFLPs进行连锁分析,其中1例为首次应用这一RFLPs连锁分析完成的产前基因诊断。
【Abstract】 The genomic DNA fragment St14 (DXS52) is located in q28 region of X chromosomethat also contains the hemophilia A locus.The RFLPs of Stl4/Taq I in Chinese were studied.The frequency of allele 7A (3.6 kb) is 31%,which is obviously different from the data reportedabroad.By use of the RFLPs,8 families with hemophilia A were analysed,including 1 casefor first trimester prenatal diagnosis at risk of hemophilia A.
- 【文献出处】 遗传学报 ,Acta Genetica Sinica , 编辑部邮箱 ,1989年04期
- 【被引频次】11
- 【下载频次】54