In vitro Differentiation of Human iPSC-derived Retinal Pigment Epithelium Cells (iPSC-RPE)

Area of Science:

• Stem cell biology
• Ophthalmology
• Genetics

Background:

• Induced Pluripotent Stem Cells (iPSCs) are valuable for studying tissue development.
• Human iPSC-derived retinal pigment epithelium (iPSC-RPE) cells mimic fetal RPE.
• Biobanks of iPSCs, like iPSCORE, are crucial for investigating genetic influences on RPE development and Age-related Macular Degeneration (AMD).

Purpose of the Study:

• To present an optimized, cost-effective, and reproducible protocol for deriving human iPSC-RPE cells.
• To establish methods for quality control of these cells using flow cytometry and immunofluorescence.
• To enable high-throughput generation of iPSC-RPE samples for genetic studies.

Main Methods:

• Derivation of human iPSC-RPE cells using small molecules under serum-free conditions.
• Quality control assessment via flow cytometry and immunofluorescence.
• Whole culture passaging technique for cell enrichment.

Main Results:

• Achieved high purity of iPSC-RPE cells (88-98.1% ZO-1 and MiTF double positive).
• Protocol is cost-effective, reproducible, and does not require manual selection.
• Yielded a large number of iPSC-RPE cells.

Conclusions:

• The optimized protocol provides a simple and robust method for generating high-purity iPSC-RPE cells.
• This method facilitates large-scale studies on the genetic basis of RPE development and AMD.
• The protocol is suitable for high-throughput applications using iPSC-RPE from diverse individuals.