中华医学遗传学杂志
中華醫學遺傳學雜誌
중화의학유전학잡지
CHINESE JOURNAL OF MEDICAL GENETICS
2013年
3期
257-260
,共4页
顾永%邵敏华%杜旭峰%李明%施和建%张国龙
顧永%邵敏華%杜旭峰%李明%施和建%張國龍
고영%소민화%두욱봉%리명%시화건%장국룡
寻常型鱼鳞病%FLG基因%突变
尋常型魚鱗病%FLG基因%突變
심상형어린병%FLG기인%돌변
Ichthyosis vulgaris%FLG gene%Mutation
目的 对10个寻常型鱼鳞病(ichthyosis vulgaris,Ⅳ)家系的FLG基因进行突变检测,并分析中国汉族人Ⅳ患者FLG基因的突变热点.方法 用聚合酶链反应扩增10个Ⅳ家系的所有患者及正常成员FLG基因的全部外显子,对扩增产物直接进行DNA测序检测突变,同时选取100名无亲缘关系的正常人作为对照.结果 在7个家系中发现了3种FLG基因的致病突变,包括c.3321delA、c.5757delCCAG和c.8138C>T(p.S2706X),其中有两例患者的突变类型为3321delA的纯合突变,在另外3个家系中未发现FLG基因的突变.所有家系的正常成员和100名正常对照均未发现c.5757delCCAG和c.8138C>T(p.S2706X),而在2名正常对照中发现其携带c.3321delA杂合突变.结论 在中国汉族Ⅳ家系检测到3种FLG基因的突变类型,其中c.3321delA是最常见的突变类型(46.9%).首次发现c.5757delCCAG和c.8138C>T(p.S2706X)突变与Ⅳ相关.部分家系未检测到FLG基因突变,推测可能由其他致病基因导致.
目的 對10箇尋常型魚鱗病(ichthyosis vulgaris,Ⅳ)傢繫的FLG基因進行突變檢測,併分析中國漢族人Ⅳ患者FLG基因的突變熱點.方法 用聚閤酶鏈反應擴增10箇Ⅳ傢繫的所有患者及正常成員FLG基因的全部外顯子,對擴增產物直接進行DNA測序檢測突變,同時選取100名無親緣關繫的正常人作為對照.結果 在7箇傢繫中髮現瞭3種FLG基因的緻病突變,包括c.3321delA、c.5757delCCAG和c.8138C>T(p.S2706X),其中有兩例患者的突變類型為3321delA的純閤突變,在另外3箇傢繫中未髮現FLG基因的突變.所有傢繫的正常成員和100名正常對照均未髮現c.5757delCCAG和c.8138C>T(p.S2706X),而在2名正常對照中髮現其攜帶c.3321delA雜閤突變.結論 在中國漢族Ⅳ傢繫檢測到3種FLG基因的突變類型,其中c.3321delA是最常見的突變類型(46.9%).首次髮現c.5757delCCAG和c.8138C>T(p.S2706X)突變與Ⅳ相關.部分傢繫未檢測到FLG基因突變,推測可能由其他緻病基因導緻.
목적 대10개심상형어린병(ichthyosis vulgaris,Ⅳ)가계적FLG기인진행돌변검측,병분석중국한족인Ⅳ환자FLG기인적돌변열점.방법 용취합매련반응확증10개Ⅳ가계적소유환자급정상성원FLG기인적전부외현자,대확증산물직접진행DNA측서검측돌변,동시선취100명무친연관계적정상인작위대조.결과 재7개가계중발현료3충FLG기인적치병돌변,포괄c.3321delA、c.5757delCCAG화c.8138C>T(p.S2706X),기중유량례환자적돌변류형위3321delA적순합돌변,재령외3개가계중미발현FLG기인적돌변.소유가계적정상성원화100명정상대조균미발현c.5757delCCAG화c.8138C>T(p.S2706X),이재2명정상대조중발현기휴대c.3321delA잡합돌변.결론 재중국한족Ⅳ가계검측도3충FLG기인적돌변류형,기중c.3321delA시최상견적돌변류형(46.9%).수차발현c.5757delCCAG화c.8138C>T(p.S2706X)돌변여Ⅳ상관.부분가계미검측도FLG기인돌변,추측가능유기타치병기인도치.
Objective To detect FLG gene mutations in 10 families affected with ichthyosis vulgaris and to explore mutational hot spot of the FLG gene in Chinese Han population.Methods PCR and direct sequencing were carried out to identify potential mutations of the FLG gene in above families.One hundred healthy individuals were analyzed as normal controls.Results Three mutations (3321delA,5757delCCAG and S2706X) were identified in 7 families.A homozygous mutation 3321delA was also detected in two unrelated patients.No mutations were found in the remaining three families.Neither of the null mutations (5757delCCAG and S2706X) was found in the 100 controls.However,for 3321delA,a heterozygous mutation was also found in two of the controls.Conclusion Three FLG mutations have been identified in the selected families with ichthyosis vulgaris,and the 3321delA mutation was most prevalent (46.9%).Mutations 5757delCCAG and S2706X were first found in patients with ichthyosis vulgaris.Other candidate genes may underlie the disease in those without a FLG mutation.