Tyr is Responsible for the Cctq1a QTL and Links Developmental Environment to Central Corneal Thickness Determination
Tyr is Responsible for the Cctq1a QTL and Links Developmental Environment to Central Corneal Thickness Determination
Abstract Central corneal thickness is a quantitative trait with important associations to human health. In a phenotype-driven approach studying corneal thickness of congenic derivatives of C57BLKS/J and SJL/J mice, the critical region for a quantitative trait locus influencing corneal thickness, Cctq1a, was delimited to a 10-gene interval. Exome sequencing, RNAseq, and studying independent mutations eliminated multiple candidate genes and confirmed one. Though the causative gene, Tyr, has no obvious direct function in the transparent cornea, studies with multiple alleles on matched genetic backgrounds, both in isolation and genetic complementation crosses, confirmed allelism of Tyr-Cctq1a; albino mice lacking Tyr function had thin corneas. Albino mice also had increased axial length. Because albinism exposes eyes to increased light, the effect of dark-rearing was tested and found to rescue central corneal thickness. In sum, the results point to an epiphenomenon; developmental light exposure interacts with genotype as an important determinate of adult corneal thickness.
Larson Demelza R.、van der Heide Carly J.、Koli Swanand、Mercer Hannah E.、Mansaray Maurisa N.、Nair K. Saidas、Meyer Kacie J.、Anderson Michael G.、Scheetz Todd E.、Dutca Laura M.、Wang Kai、Pomernackas Nicholas、Hedberg-Buenz Adam、Whitmore S. Scott、Paradee William J.
Department of Molecular Physiology and Biophysics, University of IowaDepartment of Molecular Physiology and Biophysics, University of Iowa||Department of Ophthalmology and Visual Sciences, University of IowaDepartment of Ophthalmology, University of CaliforniaDepartment of Molecular Physiology and Biophysics, University of IowaDepartment of Molecular Physiology and Biophysics, University of IowaDepartment of Ophthalmology, University of California||Department of Anatomy, University of CaliforniaDepartment of Molecular Physiology and Biophysics, University of IowaDepartment of Molecular Physiology and Biophysics, University of Iowa||Department of Ophthalmology and Visual Sciences, University of Iowa||Center for the Prevention and Treatment of Visual LossDepartment of Ophthalmology and Visual Sciences, University of IowaCenter for the Prevention and Treatment of Visual LossDepartment of Biostatistics, University of IowaDepartment of Molecular Physiology and Biophysics, University of IowaDepartment of Molecular Physiology and Biophysics, University of Iowa||Center for the Prevention and Treatment of Visual LossDepartment of Ophthalmology and Visual Sciences, University of IowaGenome Editing Core Facility, University of Iowa
眼科学基础医学遗传学
Larson Demelza R.,van der Heide Carly J.,Koli Swanand,Mercer Hannah E.,Mansaray Maurisa N.,Nair K. Saidas,Meyer Kacie J.,Anderson Michael G.,Scheetz Todd E.,Dutca Laura M.,Wang Kai,Pomernackas Nicholas,Hedberg-Buenz Adam,Whitmore S. Scott,Paradee William J..Tyr is Responsible for the Cctq1a QTL and Links Developmental Environment to Central Corneal Thickness Determination[EB/OL].(2025-03-28)[2025-04-26].https://www.biorxiv.org/content/10.1101/2021.09.22.461410.点此复制
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