Integrated stem cells from apical papilla in a 3D culture system improve human embryonic stem cell derived retinal organoid formation
- PMID:35016877
- DOI: 10.1016/j.lfs.2021.120273
Integrated stem cells from apical papilla in a 3D culture system improve human embryonic stem cell derived retinal organoid formation
Abstract
Aim: Eye organoids are 3D models of the retina that provide new possibilities for studying retinal development, drug toxicity and the molecular mechanisms of diseases. Although there are several protocols that can be used to generate functional tissues, none have been used to assemble human retinal organoids containing mesenchymal stem cells (MSCs).
Main methods: In this study we intend to assess the effective interactions of MSCs and human embryonic stem cells (hESCs) during retinal organoid formation. We evaluated the inducing activities of bone marrow MSCs (BM-MSCs), trabecular meshwork (TM), and stem cells from apical papilla (SCAP)-derived MSCs in differentiation of hESCs in a three-dimensional (3D) direct co-culture system.
Key findings: In comparison with the two other MSC sources, the induction potential of SCAP was confirmed in the co-culture system. Although the different SCAP cell ratios did not show any significant morphology changes during the first seven days, increasing the number of SCAPs improved formation of the optic vesicle (OV) structure, which was confirmed by assessment of specific markers. The OVs subsequently developed to an optic cup (OC), which was similar to the in vivo environment. These arrangements expressed MITF in the outer layer and CHX10 in the inner layer.
Significance: We assessed the inducing activity of SCAP during differentiation of hESCs towards a retinal fate in a 3D organoid system. However, future studies be conducted to gather additional details about the development of the eye field, retinal differentiation, and the molecular mechanisms of diseases.
Keywords: Bone marrow mesenchymal stem cell; Co-culture system; Human embryonic stem cells; Retinal organoid; Stem cell from apical papilla; Trabecular meshwork.
Copyright © 2021. Published by Elsevier Inc.
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