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73例中国人血友病甲基因突变的分析 总被引:6,自引:1,他引:5
刘建湘 张宇舟 王鸿利 黄秋花 曹文俊 王学锋 邵慧珍 王振义 陈竺 黄薇LIU Jian-Xiang ZHANG Yu-Zhou WANG Hong-Li HUANG Qiu-Hua CAO Wen-Jun WANG Xue-Feng SHAO Hui-Zhen WANG Zhen-Yi CHEN Zhu HANG Wei 《遗传》1998,20(1):1-6
我们用Southern blotting、PCR、变性梯度凝胶电泳(DGGE)和DNA测序等方法对73例血友病甲患者(经上海瑞金医院测定血浆FVⅢ:C和vWF:Ag诊断,其中无亲缘关系患者65例,按FVⅢ:C水平分为轻、中、重三型。FVⅢ:C< 2%为重型,共47例;FVⅢ:C 2%-5%为中型,共9例;FVⅢ:C5%-25%为轻型,共1 7例)进行FVⅢ基因突变检测。共检出内含子22倒位23例,均为重型,约占重型的49%,与国外报道相似。余下50例(其中无亲缘关系者45)用PCR-DGG E分析所有外显子及其侧翼内含子序列,发现异常条带则进行DNA测序。在17例患者中检出突变13种,其中无义突变5种,均为重型;错义突变6种,除1例外都是轻中型;小缺失2例,都是重型;其中,AA466Lys(AAG)-Thr(ACG)、719Tyr(TAC)-Stop(TAG)、AA826 Asp(GAC)-Glu(GAA)、312Ile(ATC)-xxC及AA1551-1552del(AGAA)为新发现的突变。有亲缘关系的患者都有相同的基因突变,而在无亲缘关系患者未发现相同突变。基因突变与临床表现基本相符。
Abstract:We use Southern blotting,PCR,denaturing gradient gel electrophoresis(DGGE)and DNA sequencing to detect gene mutations of haemophilia A in Chinese population.73 cases(47 severe)(FVIII:C<2%),9 moderate(FVIII:C 2%~5%),17 mild(FVIII:C 5%~25%)of haemophilia A were first screened with Southern blotting,23 were found to be the intron 22 inversion type,all being severe cases.The remaining 50 cases without intron 22 in version were examined with PCR-DGGE.Genomic DNA were amplified using GC-clamped primers covering all the exons and all flanking intron regions.Abnormal bands were sequenced.13 different mutations were identified,including 5 nonsense mutations,6 missense mutations and 2 small deletions.5 mutations,AA466Lys(AAG)-Thr(ACG),AA719Tyr(TAC)-Stop(TAG),AA826Asp(GAC)-Glu(GAA),AA312Ile(ATC)-xxC and AA1551-1552del(AGAA)have not been reported before.Generally the genetic defects correspond to the clinical conditions. 相似文献
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Application of radiation hybrid in gene mapping 总被引:2,自引:0,他引:2
Radiationhybrid(RH)mappingisasomaticcellgeneticmappingtechniquewitharesolutionofabout500kb.Ithasbecomeageneralwaytoconstructhighresolution,contiguousphysicalmapofhumanchromosomes[1].BasedonearlierstudiesofGossandHarris[2]andmodificationlaterbyCoxandcoworker… 相似文献
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