A Novel Splicing Mutation Alters DSPP Transcription and Leads to Dentinogenesis Imperfecta Type IIReport as inadecuate




A Novel Splicing Mutation Alters DSPP Transcription and Leads to Dentinogenesis Imperfecta Type II - Download this document for free, or read online. Document in PDF available to download.

Dentinogenesis imperfecta DGI type II is an autosomal dominant disease characterized by a serious disorders in teeth. Mutations of dentin sialophosphoprotein DSPP gene were revealed to be the causation of DGI type II DGI-II. In this study, we identified a novel mutation NG 011595.1:g.8662T>C, c.135+2T>C lying in the splice donor site of intron 3 of DSPP gene in a Chinese Han DGI-II pedigree. It was found in all affected subjects but not in unaffected ones or other unrelated healthy controls. The function of the mutant DSPP gene, which was predicted online and subsequently confirmed by in vitro splicing analysis, was the loss of splicing of intron 3, leading to the extended length of DSPP mRNA. For the first time, the functional non-splicing of intron was revealed in a novel DSPP mutation and was considered as the causation of DGI-II. It was also indicated that splicing was of key importance to the function of DSPP and this splice donor site might be a sensitive mutation hot spot. Our findings combined with other reports would facilitate the genetic diagnosis of DGI-II, shed light on its gene therapy and help to finally conquer human diseases.



Author: Jun Zhang , Jiucun Wang , Yanyun Ma, Wenqi Du, Siyang Zhao, Zuowei Zhang, Xiaojiao Zhang, Yue Liu, Huasheng Xiao, Hongyan Wang, L

Source: http://plos.srce.hr/



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