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A recurrent mutation in CRYGD is associated with autosomal dominant congenital coralliform cataract in two unrelated Chinese families

PURPOSE: Congenital cataract is a clinically and genetically heterogeneous lens disorder. The purpose of this study was to identify the mutation responsible for autosomal dominant congenital coralliform cataracts in two Chinese families and to investigate the relationship between virulence genes and...

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Autores principales: Yang, Guoxing, Xiong, Chunlei, Li, Shanlan, Wang, Yuanyuan, Zhao, Jialiang
Formato: Texto
Lenguaje:English
Publicado: Molecular Vision 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3086606/
https://www.ncbi.nlm.nih.gov/pubmed/21552497
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author Yang, Guoxing
Xiong, Chunlei
Li, Shanlan
Wang, Yuanyuan
Zhao, Jialiang
author_facet Yang, Guoxing
Xiong, Chunlei
Li, Shanlan
Wang, Yuanyuan
Zhao, Jialiang
author_sort Yang, Guoxing
collection PubMed
description PURPOSE: Congenital cataract is a clinically and genetically heterogeneous lens disorder. The purpose of this study was to identify the mutation responsible for autosomal dominant congenital coralliform cataracts in two Chinese families and to investigate the relationship between virulence genes and lens morphology. METHODS: Patients received a physical examination, and blood samples were collected for DNA extraction. Mutation analysis was performed by direct sequencing of the candidate genes: gammaC-crystallin (CRYGC), gammaD-crystallin (CRYGD), gammaS-crystallin (CRYGS), gap-junction protein, alpha 8 (GJA8), gap-junction protein, alpha 3 (GJA3), and alphaA-crystallin (CRYAA). RESULTS: The affected individuals in two families had congenital coralliform cataracts. Mutational analysis of the CRYGD identified a C→A transversion at nucleotide position c.70 in exon 2, which resulted in a threonine substitution for proline at amino-acid residue 24 (P24T). This mutation was identified in all affected individuals but was not found in healthy relatives or 100 control chromosomes from the same ethnic background. CONCLUSIONS: Our results indicated that the P24T mutation of CRYGD was responsible for two Chinese pedigrees with congenital coralliform cataracts. CRYGD and coralliform cataracts are highly related, and P24T may be a hot-point mutation for this disorder.
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spelling pubmed-30866062011-05-06 A recurrent mutation in CRYGD is associated with autosomal dominant congenital coralliform cataract in two unrelated Chinese families Yang, Guoxing Xiong, Chunlei Li, Shanlan Wang, Yuanyuan Zhao, Jialiang Mol Vis Research Article PURPOSE: Congenital cataract is a clinically and genetically heterogeneous lens disorder. The purpose of this study was to identify the mutation responsible for autosomal dominant congenital coralliform cataracts in two Chinese families and to investigate the relationship between virulence genes and lens morphology. METHODS: Patients received a physical examination, and blood samples were collected for DNA extraction. Mutation analysis was performed by direct sequencing of the candidate genes: gammaC-crystallin (CRYGC), gammaD-crystallin (CRYGD), gammaS-crystallin (CRYGS), gap-junction protein, alpha 8 (GJA8), gap-junction protein, alpha 3 (GJA3), and alphaA-crystallin (CRYAA). RESULTS: The affected individuals in two families had congenital coralliform cataracts. Mutational analysis of the CRYGD identified a C→A transversion at nucleotide position c.70 in exon 2, which resulted in a threonine substitution for proline at amino-acid residue 24 (P24T). This mutation was identified in all affected individuals but was not found in healthy relatives or 100 control chromosomes from the same ethnic background. CONCLUSIONS: Our results indicated that the P24T mutation of CRYGD was responsible for two Chinese pedigrees with congenital coralliform cataracts. CRYGD and coralliform cataracts are highly related, and P24T may be a hot-point mutation for this disorder. Molecular Vision 2011-04-28 /pmc/articles/PMC3086606/ /pubmed/21552497 Text en Copyright © 2011 Molecular Vision. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Yang, Guoxing
Xiong, Chunlei
Li, Shanlan
Wang, Yuanyuan
Zhao, Jialiang
A recurrent mutation in CRYGD is associated with autosomal dominant congenital coralliform cataract in two unrelated Chinese families
title A recurrent mutation in CRYGD is associated with autosomal dominant congenital coralliform cataract in two unrelated Chinese families
title_full A recurrent mutation in CRYGD is associated with autosomal dominant congenital coralliform cataract in two unrelated Chinese families
title_fullStr A recurrent mutation in CRYGD is associated with autosomal dominant congenital coralliform cataract in two unrelated Chinese families
title_full_unstemmed A recurrent mutation in CRYGD is associated with autosomal dominant congenital coralliform cataract in two unrelated Chinese families
title_short A recurrent mutation in CRYGD is associated with autosomal dominant congenital coralliform cataract in two unrelated Chinese families
title_sort recurrent mutation in crygd is associated with autosomal dominant congenital coralliform cataract in two unrelated chinese families
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3086606/
https://www.ncbi.nlm.nih.gov/pubmed/21552497
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