Identification and functional analysis of GJA8 mutation in a Chinese family with autosomal dominant perinuclear cataracts.
Congenital cataract is a clinically and genetically heterogeneous group of eye disorders that causes visual impairment and childhood blindness. The purpose of this study was to identify the genetic defect associated with autosomal dominant congenital perinuclear cataract in a Chinese family. A detai...
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doaj-1b8a8079ceea4b259cc5da91bccd544d2020-11-24T21:41:55ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0183e5992610.1371/journal.pone.0059926Identification and functional analysis of GJA8 mutation in a Chinese family with autosomal dominant perinuclear cataracts.Dongmei SuZhenfei YangQian LiLina GuanHuiling ZhangDandan ELei ZhangSiquan ZhuXu MaCongenital cataract is a clinically and genetically heterogeneous group of eye disorders that causes visual impairment and childhood blindness. The purpose of this study was to identify the genetic defect associated with autosomal dominant congenital perinuclear cataract in a Chinese family. A detailed family history and clinical data of the family were recorded, and candidate gene sequencing was performed to screen for mutation-causing disease in our study. Direct sequencing revealed a c.601G>A (p.E201K) transversion in exon 2 of GJA8. This mutation co-segregated with all affected individuals in the family and was not found in unaffected family members or 100 unrelated controls. The function and mechanism of novel GJA8 point mutation E201K in Chinese patients were then investigated in this study. We found E201K aberrantly located in cytoplasm and prevented its location in the plasma membrane. Induction of E201K expression led to a decrease in cell growth and viability by MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. Our study provides important evidence that GJA8 is a disease-causing gene for congenital cataract and that mutation of GJA8 has a potential causative effect.http://europepmc.org/articles/PMC3612055?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dongmei Su Zhenfei Yang Qian Li Lina Guan Huiling Zhang Dandan E Lei Zhang Siquan Zhu Xu Ma |
spellingShingle |
Dongmei Su Zhenfei Yang Qian Li Lina Guan Huiling Zhang Dandan E Lei Zhang Siquan Zhu Xu Ma Identification and functional analysis of GJA8 mutation in a Chinese family with autosomal dominant perinuclear cataracts. PLoS ONE |
author_facet |
Dongmei Su Zhenfei Yang Qian Li Lina Guan Huiling Zhang Dandan E Lei Zhang Siquan Zhu Xu Ma |
author_sort |
Dongmei Su |
title |
Identification and functional analysis of GJA8 mutation in a Chinese family with autosomal dominant perinuclear cataracts. |
title_short |
Identification and functional analysis of GJA8 mutation in a Chinese family with autosomal dominant perinuclear cataracts. |
title_full |
Identification and functional analysis of GJA8 mutation in a Chinese family with autosomal dominant perinuclear cataracts. |
title_fullStr |
Identification and functional analysis of GJA8 mutation in a Chinese family with autosomal dominant perinuclear cataracts. |
title_full_unstemmed |
Identification and functional analysis of GJA8 mutation in a Chinese family with autosomal dominant perinuclear cataracts. |
title_sort |
identification and functional analysis of gja8 mutation in a chinese family with autosomal dominant perinuclear cataracts. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2013-01-01 |
description |
Congenital cataract is a clinically and genetically heterogeneous group of eye disorders that causes visual impairment and childhood blindness. The purpose of this study was to identify the genetic defect associated with autosomal dominant congenital perinuclear cataract in a Chinese family. A detailed family history and clinical data of the family were recorded, and candidate gene sequencing was performed to screen for mutation-causing disease in our study. Direct sequencing revealed a c.601G>A (p.E201K) transversion in exon 2 of GJA8. This mutation co-segregated with all affected individuals in the family and was not found in unaffected family members or 100 unrelated controls. The function and mechanism of novel GJA8 point mutation E201K in Chinese patients were then investigated in this study. We found E201K aberrantly located in cytoplasm and prevented its location in the plasma membrane. Induction of E201K expression led to a decrease in cell growth and viability by MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. Our study provides important evidence that GJA8 is a disease-causing gene for congenital cataract and that mutation of GJA8 has a potential causative effect. |
url |
http://europepmc.org/articles/PMC3612055?pdf=render |
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