Fate Mapping Mammalian Corneal Epithelia

The Ocular Surface
Alexander RichardsonNick Di Girolamo

Abstract

The anterior aspect of the cornea consists of a stratified squamous epithelium, thought to be maintained by a rare population of stem cells (SCs) that reside in the limbal transition zone. Although migration of cells that replenish the corneal epithelium has been studied for over a century, the process is still poorly understood and not well characterized. Numerous techniques have been employed to examine corneal epithelial dynamics, including visualization by light microscopy, the incorporation of vital dyes and DNA labels, and transplantation of genetically marked cells that have acted as cell and lineage beacons. Modern-day lineage tracing utilizes molecular methods to determine the fate of a specific cell and its progeny over time. Classically employed in developmental biology, lineage tracing has been used more recently to track the progeny of adult SCs in a number of organs to pin-point their location and understand their movement and influence on tissue regeneration. This review highlights key discoveries that have led researchers to develop cutting-edge genetic tools to effectively and more accurately monitor turnover and displacement of cells within the mammalian corneal epithelium. Collating information on the basic b...Continue Reading

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Citations

Apr 12, 2017·Current Opinion in Ophthalmology·Ghasem YazdanpanahAli R Djalilian
Jul 28, 2017·Stem Cells·Mehrnoosh SaghizadehAlexander V Ljubimov
Feb 13, 2021·Genesis : the Journal of Genetics and Development·Mohd Tayyab Adil, Jonathan J Henry
Aug 21, 2021·Investigative Ophthalmology & Visual Science·Jingxin HeZhijie Li

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