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Human iPS cell derived RPE strips for secure delivery of graft cells at a target place with minimal surgical invasion
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Human iPS cell derived RPE strips for secure delivery of graft cells at a target place with minimal surgical invasion
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Journal Article
Human iPS cell derived RPE strips for secure delivery of graft cells at a target place with minimal surgical invasion
2021
Overview
Several clinical studies have been conducted into the practicality and safety of regenerative therapy using hESC/iPSC-retinal pigment epithelium (RPE) as a treatment for the diseases including age-related macular degeneration. These studies used either suspensions of RPE cells or an RPE cell sheet. The cells can be injected using a minimally invasive procedure but the delivery of an intended number of cells at an exact target location is difficult; cell sheets take a longer time to prepare, and the surgical procedure is invasive but can be placed at the target area. In the research reported here, we combined the advantages of the two approaches by producing a quickly formed hiPSC-RPE strip in as short as 2 days. The strip readily expanded into a monolayer sheet on the plate, and after transplantation in nude rats, it showed a potency to partly expand with the correct apical/basal polarity in vivo, although limited in expansion area in the presence of healthy host RPE. The strip could be injected into a target area in animal eyes using a 24G canula tip.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ Age
/ Animals
/ Humanities and Social Sciences
/ Induced Pluripotent Stem Cells - cytology
/ Male
/ Minimally Invasive Surgical Procedures - methods
/ Polarity
/ Rabbits
/ Rats
/ Retinal Degeneration - pathology
/ Retinal Degeneration - surgery
/ Retinal Degeneration - therapy
/ Retinal Pigment Epithelium - transplantation
/ Science
