[1]吴常伟,董 红.遗传性牙本质发育不全Ⅱ型牙本质涎磷蛋白基因多态性分析[J].医学信息,2021,34(24):1-4.[doi:10.3969/j.issn.1006-1959.2021.24.001]
 WU Chang-wei,DONG Hong.Nucleotide Polymorphism Analysis on the DSPP Gene Causing Dentinogenesis Imperfecta Type Ⅱ[J].Medical Information,2021,34(24):1-4.[doi:10.3969/j.issn.1006-1959.2021.24.001]
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遗传性牙本质发育不全Ⅱ型牙本质涎磷蛋白基因多态性分析()
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医学信息[ISSN:1006-1959/CN:61-1278/R]

卷:
34卷
期数:
2021年24期
页码:
1-4
栏目:
出版日期:
2021-12-15

文章信息/Info

Title:
Nucleotide Polymorphism Analysis on the DSPP Gene Causing Dentinogenesis Imperfecta Type Ⅱ
文章编号:
1006-1959(2021)24-0001-04
作者:
吴常伟董 红
(1.首都医科大学燕京医学院,北京 101300;2.湖北医药学院附属东风口腔医院,湖北 十堰 442000)
Author(s):
WU Chang-weiDONG Hong
(1.Yanjing Medical School,Capital University of Medical Science,Beijing 101300,China;2.Dongfeng Stomatological Hospital Affiliated to Hubei Medical College,Shiyan 442000,Hubei,China)
关键词:
遗传性牙本质发育不全Ⅱ型牙本质涎磷蛋白基因碱基替换单核苷酸多态性
Keywords:
Dentinogenesis imperfecta typeDentin sialophosphoprotein geneBase substitutionSingle nucleotide polymorphism
分类号:
R781.2
DOI:
10.3969/j.issn.1006-1959.2021.24.001
文献标志码:
A
摘要:
目的 分析遗传性牙本质发育不全(DGI)Ⅱ型患者DSPP基因突变特征,从分子水平探讨DGI-Ⅱ的发病机制。方法 利用FTA洗脱卡对2个遗传性牙本质发育不全Ⅱ型家系成员进行末梢采血,提取纯化基因组DNA;设计引物扩增DSPP基因的5个外显子及其相邻区域,扩增产物鉴定后测序和序列比对分析。结果 两个家系的基因检测结果与人类DSPP基因序列比对存在3个碱基替换:外显子4的c.847G>A(p.D243N)是中性突变,外显子4的c.1017A>G(p.S299S)突变和外显子5的c.2091C>T(p.G657G)是同义突变。结论 以上三个碱基置换均表现为单核苷酸多态性,其可能为DGI-Ⅱ致病基因的克隆鉴定、实施精准医疗提供参考。
Abstract:
Objective To analyze the characteristics of DSPP gene mutation in patients with dentinogenesis imperfecta type (DGI) Ⅱ and explore the pathogenesis of DGI-Ⅱ at the molecular level.Methods Peripheral blood samples were collected by FTA elute cards from two families with DGI-Ⅱ, and genomic DNA was extracted from samples. All five DSPP exons were amplified by using primers that flanked the exon-intron boundaries, and the amplified products were identified, sequenced and aligned.Results Sequencing and alignment of DSPP gene showed that three base substitutions in two families with DGI-Ⅱ: the first base substitution for c.847G>A(p.D243N) in exon 4 was neutral mutation, and the other two base substitutions for c.1017A>G(p.S299S) in exon 4 and c.2091C>T(p.G657G) in exon 5 were synonymous mutations.Conclusion The above three base substitutions are all single nucleotide polymorphisms, which may provide reference for the cloning and identification of DGI-Ⅱ pathogenic genes and the implementation of precision medicine.

参考文献/References:

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更新日期/Last Update: 1900-01-01