ArticleThe ocular surface2025
Matrix glycosaminoglycans and proteoglycans in human cornea organoids and similarities with fetal corneal stages.
Article in The ocular surface, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Extracellular matrix proteoglycans lumican and biglycan promote innate immune signals and viral clearance in HSV-1 infections of mouse corneas.bioRxiv : the preprint server for biology · 2026Article
- Review
- Microbial modulation of proteoglycan and glycosaminoglycan biosynthesis in a three-dimensional corneal epithelium model.Frontiers in cellular and infection microbiology · 2026Article
- Efficient Fabrication of Human Corneal Stromal Cell Spheroids and Promoting Cell Stemness Based on 3D-Printed Derived PDMS Microwell Platform.Biomolecules · 2025Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
purposeWe developed human cornea organoids (HCOs) from induced pluripotent stem cells (iPSCs) where single-cell RNA-sequence (scRNA-seq) analysis suggested similarity with developing rather than mature human corneas. We performed immunohistology to determine the presence of corneal glycosaminoglycans as an assessment of maturity. We undertook a detailed comparison of the HCO scRNA-seq data with a recent scRNA-seq study of human fetal corneas at different stages to gauge the HCO's maturity.
methodsWe generated HCOs from a second iPSC line, NCRM-1, to assess the reproducibility of HCO development. We stained sections from both HCO lines with Alcian blue and picrosirius red to determine deposition of sulfated glycosaminoglycans and fibrillar collagens. We immunolocalized glycosaminoglycan biosynthetic enzymes and proteoglycan core proteins. The scRNA-seq data from IMR90.4 HCOs were compared to that of fetal corneas using MetaNeighbor analysis to assess the similarity of HCOs to different stages of human corneal development.
resultsThe MetaNeighbor analysis suggests closer alignment of the IMR90.4 HCOs with 17-18 post-conception week fetal human corneas. HCOs from both iPSC lines deposit sulfated glycosaminoglycans and fibrillar collagens. Immunohistology showed chondroitin/dermatan sulfate (CS/DS) and keratan sulfate in the presumptive stromal and some epithelial layers. The NCRM-1-derived HCOs show increased CS/DS staining compared to the IMR90.4 derived HCOs.
conclusionsBoth HCO lines show similar developmental patterns and timeline. The NCRM-1 HCO line may have more glycosaminoglycan deposition. Overall, the glycosaminoglycan deposition pattern is consistent with an immature tissue. Optimizations based on our current findings may yield more mature stromal cells and cornea-typical proteoglycans.
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