aldh7a1 regulates eye and limb development in zebrafish

Uveal coloboma is a potentially blinding congenital ocular malformation caused by failure of the optic fissure to close during development. Although mutations in numerous genes have been described, these account for a minority of cases, complicating molecular diagnosis and genetic counseling. Here w...

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Veröffentlicht in:PloS one 2014-07, Vol.9 (7), p.e101782
Hauptverfasser: Babcock, Holly E, Dutta, Sunit, Alur, Ramakrishna P, Brocker, Chad, Vasiliou, Vasilis, Vitale, Susan, Abu-Asab, Mones, Brooks, Brian P
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container_end_page
container_issue 7
container_start_page e101782
container_title PloS one
container_volume 9
creator Babcock, Holly E
Dutta, Sunit
Alur, Ramakrishna P
Brocker, Chad
Vasiliou, Vasilis
Vitale, Susan
Abu-Asab, Mones
Brooks, Brian P
description Uveal coloboma is a potentially blinding congenital ocular malformation caused by failure of the optic fissure to close during development. Although mutations in numerous genes have been described, these account for a minority of cases, complicating molecular diagnosis and genetic counseling. Here we describe a key role of aldh7a1 as a gene necessary for normal eye development. We show that morpholino knockdown of aldh7a1 in zebrafish causes uveal coloboma and misregulation of nlz1, another known contributor to the coloboma phenotype, as well as skeletal abnormalities. Knockdown of aldh7a1 leads to reduced cell proliferation in the optic cup of zebrafish, delaying the approximation of the edges of the optic fissure. The aldh7a1 morphant phenotype is partially rescued by co-injection of nlz1 mRNA suggesting that nlz1 is functionally downstream of aldh7a1 in regulating cell proliferation in the optic cup. These results support a role of aldh7a1 in ocular development and skeletal abnormalities in zebrafish.
doi_str_mv 10.1371/journal.pone.0101782
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subjects Abnormalities
Acids
Aldehyde Dehydrogenase - genetics
Animals
Biology and Life Sciences
Cell Proliferation
Coinjection
Danio rerio
Dehydrogenases
Developmental biology
DNA-Binding Proteins - genetics
Embryo, Nonmammalian
Embryonic Development - genetics
Embryos
Environmental health
Extremities - embryology
Eye - embryology
Eye - metabolism
Gene Expression
Gene Expression Regulation, Developmental
Gene Knockdown Techniques
Genes
Genetic counseling
Genetic screening
Genetics
Genotype & phenotype
Health sciences
Hybridization
Localization
Metastasis
mRNA
Mutation
Pediatrics
Pharmaceutical sciences
Phenotype
Phenotypes
Retina
RNA
Toxicology
Tretinoin - pharmacology
Xenopus
Zebrafish
Zebrafish - embryology
Zebrafish - genetics
Zebrafish Proteins - genetics
title aldh7a1 regulates eye and limb development in zebrafish
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