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Stem Cells Transl Med. 2019 Mar 27. doi: 10.1002/sctm.18-0267. [Epub ahead of print]

Systematic Comparison of Retinal Organoid Differentiation from Human Pluripotent Stem Cells Reveals Stage Specific, Cell Line, and Methodological Differences.

Author information

1
Institute of Genetic Medicine, Newcastle University, Newcastle, United Kingdom.
2
Centre for Ophthalmology and Visual Science, Lions Eye Institute, University of Western Australia, Perth, Western Australia, Australia.
3
Institute of Neuroscience, Newcastle University, Newcastle, United Kingdom.
4
EM Research Services, Newcastle University, Newcastle, United Kingdom.

Abstract

A major goal in the stem cell field is to generate tissues which can be utilized as a universal tool for in vitro models of development and disease, drug development, or as a resource for patients suffering from disease or injury. Great efforts are being made to differentiate human pluripotent stem cells in vitro toward retinal tissue, which is akin to native human retina in its cytoarchitecture and function, yet the numerous existing retinal induction protocols remain variable in their efficiency and do not routinely produce morphologically or functionally mature photoreceptors. Herein, we determine the impact that the method of embryoid body (EB) formation and maintenance as well as cell line background has on retinal organoid differentiation from human embryonic stem cells and human induced pluripotent stem cells. Our data indicate that cell line-specific differences dominate the variables that underline the differentiation efficiency in the early stages of differentiation. In contrast, the EB generation method and maintenance conditions determine the later differentiation and maturation of retinal organoids. Of the latter, the mechanical method of EB generation under static conditions, accompanied by media supplementation with Y27632 for the first 48 hours of differentiation, results in the most consistent formation of laminated retinal neuroepithelium containing mature and electrophysiologically responsive photoreceptors. Collectively, our data provide substantive evidence for stage-specific differences in the ability to give rise to laminated retinae, which is determined by cell line-specific differences in the early stages of differentiation and EB generation/organoid maintenance methods at later stages. Stem Cells Translational Medicine 2019.

KEYWORDS:

Human embryonic stem cells; Induced pluripotent stem cells; Organoids; Retina; Tissue engineering

PMID:
30916455
DOI:
10.1002/sctm.18-0267
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