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Updated: Jun 18, 2026
Isolation, Culture, and Genetic Engineering of Mammalian Primary Pigment Epithelial Cells for Non-Viral Gene Therapy
Published on: February 26, 2021
In vitro phenotypic modification of pigmented epithelium cells from human eye at early stages of development
L A Milyushina1, R A Poltavtseva, M V Marei
1N. K. Koltsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, Russia.
Insights
Human fetal retinal pigment epithelial cells exhibit multipotent characteristics. Three subtypes were identified, each with distinct behaviors and differentiation potentials, offering insights into retinal cell plasticity.
Area of Science:
- Cell Biology
- Developmental Biology
- Ophthalmology
Background:
- Human fetal retinal pigment epithelium (RPE) is crucial for retinal health.
- Understanding RPE cell plasticity is vital for regenerative medicine and treating retinal diseases.
Purpose of the Study:
- To investigate the multipotent characteristics and neuronal transdifferentiation capacity of human fetal RPE cells in vitro.
- To identify and characterize distinct RPE cell subtypes based on their behavior and differentiation potential.
Main Methods:
- In vitro culture of human fetal RPE cells (9-11.5 weeks gestation).
- Analysis using a wide spectrum of antibodies to assess cell characteristics.
- Evaluation of cell adhesion, migration, and differentiation under varying culture conditions.
Main Results:
- Human fetal RPE is a heterogeneous cell population comprising three distinct subtypes.
- Subtype 1 cells maintain epithelial characteristics.
- Subtype 2 cells transdifferentiate into neuroblast and photoreceptor precursors.
- Subtype 3 cells form spheres and exhibit multipotent differentiation capabilities.
Conclusions:
- Human fetal RPE possesses significant multipotency and transdifferentiation potential.
- The identified subtypes display unique responses to microenvironmental factors, influencing their fate.
- These findings have implications for stem cell therapies and understanding retinal development.
Abstract:
Multipotent characteristics of human fetal (9-11.5 weeks) pigmented epithelial retinal cells and capacity to transdifferentiation in neuronal direction were studied in vitro under different culturing conditions. The cultures were analyzed using a wide spectrum of antibodies. It was found that pigmented epithelium of human eye is a heterogeneous cell population with three subtypes differing by adhesion characteristics, migration, transdifferentiation potential, and reaction to microenvironmental factors. Subtype 1 cells steadily retain their epithelial characteristics, subtype 2 cells change their morphotype and produce neuroblast and photoreceptor cell proteins, and subtype 3 cells form free floating spheres and are capable to multipotent differentiation.
