ArticleEye and vision (London, England)2023
Establishment of a novel ER-stress induced myopia model in mice.
Article in Eye and vision (London, England), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 11 citations in OpenAlex.
- Photobiology in ophthalmology: from evolutionary adaptation to translational therapeutics.Japanese journal of ophthalmology · 2026Review
- Endoplasmic reticulum stress-based ATF6 signaling pathway: evaluation of 4-PBA improving retinal state in myopic guinea pigs.Naunyn-Schmiedeberg's archives of pharmacology · 2026Article
- Polarized Light Microscopy-Based Quantification of Scleral Collagen Fiber Bundle Remodeling in the Lens-Induced Myopia Mouse Model.Life (Basel, Switzerland) · 2025Article
- Mfn2 Regulates Scleral Remodeling in Myopia by Maintaining Endoplasmic Reticulum Homeostasis in Scleral Fibroblasts.Investigative ophthalmology & visual science · 2025Article
- IMI-2025 Digest.Investigative ophthalmology & visual science · 2025Article
- Dose-dependent myopia-suppressing effect of 4-phenlybutyric acid eye drops in a mouse myopia model under masked condition.BMC ophthalmology · 2025Article
- Regulatory Effects of the Wnt7b/β-Catenin/MMP-2 Signaling Pathway on Scleral Stiffness in Guinea Pigs With Form-Deprivation Myopia.Investigative ophthalmology & visual science · 2025Article
- Animal modeling for myopia.Advances in ophthalmology practice and researchReview
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Authors and funding
9 authors at 3 institutions in 3 countries.
Funding
Abstract
backgroundRecent studies have indicated a strong correlation between endoplasmic reticulum (ER) stress and myopia and that eyedrops containing the ER stress inducer tunicamycin (Tm) can induce myopic changes in C57BL/6 J mice. Therefore, this study aimed to create a new myopia model using Tm eyedrops and to explore the mechanism of ER stress-mediated myopia development.
methodsThree-week-old C57BL/6 J mice were treated with different concentrations (0, 25, 50, and 100 μg/mL) and/or number of applications (zero, one, three, and seven) of Tm eyedrops. Refraction and axial length (AL) were measured before and one week after Tm treatment. Scleral collagen alterations were evaluated under polarised light after picrosirius red staining. ER stress-related indicators, such as the expression of collagen I and cleaved collagen were detected using Western blotting.
resultsCompared with the control group, mice administered eyedrops with 50 μg/mL Tm only once showed the greatest myopic shifts in refraction and AL elongation and reduced scleral expression of collagen I. Picrosirius red staining showed a lower percentage of bundled collagen in the Tm group. Expression of ER-stress indicators increased in the Tm groups. Furthermore, optimised administration of Tm induced matrix metalloproteinase-2 (MMP2) expression in the sclera, which plays a major role in collagen degradation.
conclusionsWe have demonstrated that ER stress in the sclera is involved in myopia progression. Tm eyedrops induced myopic changes, loosening of the scleral collagen and decreased expression of collagen I. This process may be associated with ER stress in the sclera, which upregulates the expression of MMP2 leading to collagen degradation.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.