X性连锁少汗性外胚叶发育不良一家系EDA基因突变检测  

Mutation analysis of EDA gene in a pedigree with X-linked hypohidrotic ectodermal dysplasia

作　　者：李婷婷[1] 王鹏[1] 赵娟[1] 康晓静[1] LI Ting-ting;WANG Peng;ZHAO Juan;KANG Xiao-jing(Department of Dermatology,People's Hospital in Xinjiang Uygur Autonomous Rgion,Urumqi 830001,China)

机构地区：[1]新疆维吾尔自治区人民医院皮肤科,新疆乌鲁木齐830001

出　　处：《临床皮肤科杂志》2020年第1期14-16,共3页Journal of Clinical Dermatology

摘　　要：目的:检测1例X性连锁少汗性外胚叶发育不良患儿及其家族成员EDA基因的突变情况。方法:调查患儿家系,提取家系中患儿和正常人血液基因组DNA,设计引物扩增EDA基因的外显子及其侧翼区域,并对其产物进行测序后与100例健康对照者的测序结果进行比对。结果:患儿EDA基因发生编码区第466位核苷酸由胞嘧啶变为胸腺嘧啶(c.466C>T),该突变导致第156位氨基酸由精氨酸变为半胱氨酸(p.Arg156Cys),为错义突变。先证者母亲同一位置碱基呈C^T杂峰,患儿父亲和健康对照者未检测到突变。结论:错义突变c.466C>T是导致该X性连锁少汗性外胚叶发育不良家系临床表型的主要原因。Objective: To detect the EDA gene mutations in a pedigree with X-linked hypohidrotic ectodermal dysplasia.Method: Genomic DNA was extracted from blood of children, uninvolved controls in a family as well as 100 normal healthy controls. Following amplification and sequencing, sequences of EDA gene and exons of flanking regions were compared between patients and healthy controls. Results: The proband had a missense mutation in EDA gene(c.466 C>T), resulting in replacement of an amino acid(p.Arg156 Cys). Heterozygous double peaks of nucleotide C and A at the same position were found in his mother, but neither in his father nor in 100 unrelated population-matched controls. Conclusion: The c.466 C>T missense mutation of EDA gene may be the pathologic cause of this pedigree with X-linked hypohidrotic ectodermal dysplasia.

关 键 词：X性连锁少汗性外胚叶发育不良 EDA基因 突变 

分 类 号：R758.59[医药卫生—皮肤病学与性病学]