AGL gene analysis of a pedigree with glycogen storage disease type III and identification of a novel mutation

OBJECTIVE: To reveal the molecular genetic pathogenesis of the glycogen storage disease type III (GSDIII) and to provide a prerequisite for prenatal gene diagnosis in future

Bibliographische Detailangaben
Veröffentlicht in:Zhonghua er ke za zhi = Chinese journal of pediatrics. - 1960. - 51(2013), 12 vom: 03. Dez., Seite 915-9
1. Verfasser: Wu, Xiao-yun (VerfasserIn)
Weitere Verfasser: Pan, Jing-xin, Guo, Yi-bin
Format: Aufsatz
Sprache:Chinese
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Zhonghua er ke za zhi = Chinese journal of pediatrics
Schlagworte:English Abstract Journal Article Research Support, Non-U.S. Gov't Glycogen Debranching Enzyme System
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245 1 0 |a AGL gene analysis of a pedigree with glycogen storage disease type III and identification of a novel mutation 
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500 |a Date Revised 07.06.2016 
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520 |a OBJECTIVE: To reveal the molecular genetic pathogenesis of the glycogen storage disease type III (GSDIII) and to provide a prerequisite for prenatal gene diagnosis in future 
520 |a METHOD: All the coding regions as well as the border areas between exons and introns of the AGL gene and the parental relevant mutation sites were directly sequenced, so that to affirm the origin of the mutation. Then, detected novel heterozygous mutation was confirmed by cloning sequencing. Finally, definite diagnoses of the novel mutation were performed by a series of identification methods, including screening for the 100 normal controls by DHPLC in order to count the mutational frequency, analyze the conservative of the mutant amino acid sequence from 11 kinds of species and comprise the difference of the tertiary structure between the mutant protein and the normal one 
520 |a RESULT: The patient had compound heterozygous mutations, the c.100C>T (p.R34X) nonsense mutation and c. 1176_1178 del TCA deletion mutation. The p.R34X has been reported abroad, but the 1176_1178 del TCA/p.His392fs mutation is a novel one. The proband's father is heterozygous with the p.R34X mutation while his mother carries the c.1176_1178 del TCA mutation. The result from searching the dbSNP database, HGMD database and papers published in recent years showed that the c.1176_1178 del TCA is a novel mutation, but not an SNP. Conservative analysis results in 11 species indicate that the amino acid of the mutation site is highly conserved in the stage of evolution. Comparison results between the mutant protein and the normal one demonstrate that the deletion mutation results in the obvious variation of the spatial conformation of AGL protein 
520 |a CONCLUSION: The "c.1176_1178 del TCA (p.392delHis)" mutation is a novel pathogenic mutation. This mutation and the c.100C>T (p.R34X) is the cause that the proband suffer from the GSDIIIa disease. These two mutations are inherited from mother and father respectively. The methods from this paper can be used for further prenatal gene diagnosis 
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650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Guo, Yi-bin  |e verfasserin  |4 aut 
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