ArticleExperimental eye research2017
EphA2 and ephrin-A5 are not a receptor-ligand pair in the ocular lens.
Article in Experimental eye research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
23 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.
- Transcriptome Meta-Analysis Uncovers Cell-Specific Regulatory Relationships in Embryonic, Juvenile, Adult, and Aged Mouse Lens Epithelium and Fibers.Investigative ophthalmology & visual science · 2025Pooled it
- Loss of ephrin-A5 leads to clinical signs of Peters Anomaly in a mouse model.Experimental eye research · 2026Article
- The Mammalian Ocular Lens in Focus: Development, Anatomy, Physiology, Transparency, Biomechanics, and Age-related Challenges.Journal of visualized experiments : JoVE · 2026Review
- Nonmuscle myosin IIA (NMIIA) regulates anisotropic cell tension to maintain the hexagonal packing of mouse lens meridional row cells.Molecular biology of the cell · 2025Article
- Eph-ephrin signaling affects lens growth and shape, nucleus size, and gradient refractive index in adult mice.Frontiers in ophthalmology · 2025Article
- Comparative analysis of rodent lens morphometrics and biomechanical properties.Frontiers in ophthalmology · 2025Article
- Disease-related non-muscle myosin IIA D1424N rod domain mutation, but not R702C motor domain mutation, disrupts mouse ocular lens fiber cell alignment and hexagonal packing.Cytoskeleton (Hoboken, N.J.) · 2024Article
- Article
- Spatial-temporal comparison of Eph/Ephrin gene expression in ocular lenses from aging and knockout mice.Frontiers in ophthalmology · 2024Article
- Tissue, cellular, and molecular level determinants for eye lens stiffness and elasticity.Frontiers in ophthalmology · 2024Review
- Integrated single-cell multiomics uncovers foundational regulatory mechanisms of lens development and pathology.Development (Cambridge, England) · 2024Article
- The significance of growth shells in development of symmetry, transparency, and refraction of the human lens.Frontiers in ophthalmology · 2024Review
- Nonmuscle Myosin IIA Regulates the Precise Alignment of Hexagonal Eye Lens Epithelial Cells During Fiber Cell Formation and Differentiation.Investigative ophthalmology & visual science · 2023Article
- Article
- EphA2 Affects Development of the Eye Lens Nucleus and the Gradient of Refractive Index.Investigative ophthalmology & visual science · 2022Article
- Deficiency of the bZIP transcription factors Mafg and Mafk causes misexpression of genes in distinct pathways and results in lens embryonic developmental defects.Frontiers in cell and developmental biology · 2022Article
- Methodologies to unlock the molecular expression and cellular structure of ocular lens epithelial cells.Frontiers in cell and developmental biology · 2022Article
- Roles of Eph-Ephrin Signaling in the Eye Lens Cataractogenesis, Biomechanics, and Homeostasis.Frontiers in cell and developmental biology · 2022Review
- EphA2 and Ephrin-A5 Guide Eye Lens Suture Alignment and Influence Whole Lens Resilience.Investigative ophthalmology & visual science · 2021Article
- Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
Abstract
Eph-ephrin bidirectional signaling is essential for eye lens transparency in humans and mice. Our previous studies in mouse lenses demonstrate that ephrin-A5 is mainly expressed in the anterior epithelium, where it is required for maintaining the anterior epithelial monolayer. In contrast, EphA2 is localized in equatorial epithelial and fiber cells where it is essential for equatorial epithelial and fiber cell organization and hexagonal cell shape. Immunostaining of lens epithelial and fiber cells reveals that EphA2 and ephrin-A5 are also co-expressed in anterior fiber cell tips, equatorial epithelial cells and newly formed lens fibers, although they are not precisely colocalized. Due to this complex expression pattern and the promiscuous interactions between Eph receptors and ephrin ligands, as well as their complex bidirectional signaling pathways, cataracts in ephrin-A5(-/-) or EphA2(-/-) lenses may arise from loss of function or abnormal signaling mechanisms. To test whether abnormal signaling mechanisms may play a role in cataractogenesis in ephrin-A5(-/-) or EphA2(-/-) lenses, we generated EphA2 and ephrin-A5 double knockout (DKO) mice. We compared the phenotypes of EphA2(-/-) and ephrin-A5(-/-) lenses to that of DKO lenses. DKO lenses displayed an additive lens phenotype that was not significantly different from the two single KO lens phenotypes. Similar to ephrin-A5(-/-) lenses, DKO lenses had abnormal anterior epithelial cells leading to a large mass of epithelial cells that invade into the underlying fiber cell layer, directly resulting in anterior cataracts in ephrin-A5(-/-) and DKO lenses. Yet, similar to EphA2(-/-) lenses, DKO lenses also had abnormal packing of equatorial epithelial cells with disorganized meridional rows, lack of a lens fulcrum and disrupted fiber cells. The DKO lens phenotype rules out abnormal signaling by EphA2 in ephrin-A5(-/-) lenses or by ephrin-A5 in EphA2(-/-) lenses as possible cataract mechanisms. Thus, these results indicate that EphA2 and ephrin-A5 do not form a lens receptor-ligand pair, and that EphA2 and ephrin-A5 have other binding partners in the lens to help align differentiating equatorial epithelial cells or maintain the anterior epithelium, respectively.
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Registered trials
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.