ArticleThe Journal of cell biology1986
Differentiation-related expression of a major 64K corneal keratin in vivo and in culture suggests limbal location of corneal epithelial stem cells.
Article in The Journal of cell biology, 1986. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01808378 (Phase IIa Clinical Trial to Study the Feasability and Security of the Expanded Autologous Stem Cells), which is not on this map. Cited by 431 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.
Phase IIa Clinical Trial to Study the Feasability and Security of the Expanded Autologous Stem Cells (ASC) From Lipoaspirate in the Bilateral Limbic Associated Keratopathy Treatment
Who cites it
431 citing papers in PubMed, 1 synthesis or guideline pooled it, 1,392 citations in OpenAlex.
- Meta-Analysis of Keratoconus Transcriptomic Data Revealed Altered RNA Editing Levels Impacting Keratin Genomic Clusters.Investigative ophthalmology & visual science · 2023Pooled it
- Comparative evaluation of autologous tissue-engineered ocular and oral mucosal tissue grafts- a prospective randomized controlled trial.BMC biotechnology · 2024Trial
- Angiotensin (1-7)-based Proteomimetic Polymers as Topicals for the Remediation and Repair of the Cornea following Injury.bioRxiv : the preprint server for biology · 2026Article
- YAP1-dependent regulation of cell size in BCAM-positive limbal corneal progenitor cells.Experimental eye research · 2026Article
- Gellan Gum Fluid Gel System for Controlled-Delivery of Cytokine-Licensed MSC-EVs to Enhance Corneal Repair in Limbal Stem Cell Deficiency.Advanced healthcare materials · 2026Article
- The human limbus functions as an instructive epithelial transition zone.Research square · 2026Article
- Essential Role of CD63 in Maintaining Corneal Epithelial Identity in the Human Limbus.Investigative ophthalmology & visual science · 2026Article
- Human organoids as 3D in vitro platforms for drug discovery: opportunities and challenges.Nature reviews. Drug discovery · 2026Review
- PAX6 Deficiency Compromises the Ability of Limbal Epithelial Stem Cells to Properly Differentiate Into Mature Corneal Epithelial Cells.Investigative ophthalmology & visual science · 2026Article
- Outcomes of allogeneic ocular surface stem cell transplantation.Frontiers in ophthalmology · 2026Review
- MYEOV Is a Novel Marker of Differentiated Corneal Epithelium.Investigative ophthalmology & visual science · 2025Article
- PAX6-dependent differentiation landscape of ocular surface epithelium via single-cell RNA sequencing in hiPSC-derived ocular developmental organoid.Communications biology · 2025Article
- Inhibitor of DNA-Binding 3 Is a Novel Regulator of Limbal Epithelial Cell Migration Via the EphA2/Akt Signaling Pathway.Investigative ophthalmology & visual science · 2025Article
- Human corneal organoid has a limbal function that supplies epithelium to the cornea with limbal deficiency.Regenerative therapy · 2025Article
- IFITM1/OVOL1 Axis Is a Novel Regulator of the Expansion of the Limbal Epithelial Stem/Early Transient Amplifying Cell Population.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025Article
- Article
- Recent Advances in Stem Cells of Corneal Epithelia.Investigative ophthalmology & visual science · 2025Review
- Assessment of the toxic effect of benzalkonium chloride on human limbal stem cells.Scientific reports · 2025Article
- Expression Distribution of Keratins in Normal and Pathological Corneas and the Regulatory Role of Krt17 on Limbal Stem Cells.Investigative ophthalmology & visual science · 2025Article
- Mass spectrometric detection of keratins in tear fluid.Experimental eye research · 2025Article
371 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
Abstract
In this paper we present keratin expression data that lend strong support to a model of corneal epithelial maturation in which the stem cells are located in the limbus, the transitional zone between cornea and conjunctiva. Using a new monoclonal antibody, AE5, which is highly specific for a 64,000-mol-wt corneal keratin, designated RK3, we demonstrate that this keratin is localized in all cell layers of rabbit corneal epithelium, but only in the suprabasal layers of the limbal epithelium. Analysis of cultured corneal keratinocytes showed that they express sequentially three major keratin pairs. Early cultures consisting of a monolayer of "basal" cells express mainly the 50/58K keratins, exponentially growing cells synthesize additional 48/56K keratins, and postconfluent, heavily stratified cultures begin to express the 55/64K corneal keratins. Cell separation experiments showed that basal cells isolated from postconfluent cultures contain predominantly the 50/58K pair, whereas suprabasal cells contain additional 55/64K and 48/56K pairs. Basal cells of the older, postconfluent cultures, however, can become AE5 positive, indicating that suprabasal location is not a prerequisite for the expression of the 64K keratin. Taken together, these results suggest that the acidic 55K and basic 64K keratins represent markers for an advanced stage of corneal epithelial differentiation. The fact that epithelial basal cells of central cornea but not those of the limbus possess the 64K keratin therefore indicates that corneal basal cells are in a more differentiated state than limbal basal cells. These findings, coupled with the known centripetal migration of corneal epithelial cells, strongly suggest that corneal epithelial stem cells are located in the limbus, and that corneal basal cells correspond to "transient amplifying cells" in the scheme of "stem cells----transient amplifying cells----terminally differentiated cells."
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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.