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Stem Cell Res. 2017 Dec;25:72-82. doi: 10.1016/j.scr.2017.10.013. Epub 2017 Oct 26.

Comparative performance analysis of human iPSC-derived and primary neural progenitor cells (NPC) grown as neurospheres in vitro.

Author information

1
IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany.
2
Institute for Stem Cell Research & Regenerative Medicine, Medical Faculty, Heinrich-Heine-University, Duesseldorf, Germany.
3
Institute of Human Genetics, Medical Faculty, Heinrich-Heine University, Duesseldorf, Germany.
4
Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire: IGBMC, Centre National de la Recherche Scientifique, INSERUM, Université de Strasbourg, Strasbourg, France.
5
Institute of clinical neuroscience and medical psychology, Medical Faculty, Heinrich-Heine-University, Duesseldorf, Germany.
6
IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany; Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany.
7
IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany; Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany. Electronic address: ellen.fritsche@iuf-duesseldorf.de.

Abstract

Developmental neurotoxicity (DNT) testing performed in rats is resource-intensive (costs, time, animals) and bears the issue of species extrapolation. Thus, reliable alternative human-based approaches are needed for predicting neurodevelopmental toxicity. Human induced pluripotent stem cells (hiPSCs) represent a basis for an alternative method possibly being part of an alternative DNT testing strategy. Here, we compared two hiPSC neural induction protocols resulting in 3D neurospheres: one using noggin and one cultivating cells in neural induction medium (NIM protocol). Performance of Nestin+/SOX2+ hiPSC-derived neural progenitor cells (NPCs) was compared to primary human NPCs. Generally, primary hNPCs first differentiate into Nestin+ and/or GFAP+ radial glia-like cells, while the hiPSC-derived NPCs (hiPSC-NPC) first differentiate into βIII-Tubulin+ neurons suggesting an earlier developmental stage of hiPSC-NPC. In the 'Neurosphere Assay', NIM generated hiPSC-NPC produced neurons with higher performance than with the noggin protocol. After long-term differentiation, hiPSC-NPC form neuronal networks, which become electrically active on microelectrode arrays after 85days. Finally, methylmercury chloride inhibits hiPSC-NPC and hNPC migration with similar potencies. hiPSC-NPCs-derived neurospheres seem to be useful for DNT evaluation representing early neural development in vitro. More system characterization by compound testing is needed to gain higher confidence in this method.

KEYWORDS:

Brain development; In vitro; MEA; Stem cell; Testing

PMID:
29112887
DOI:
10.1016/j.scr.2017.10.013
[Indexed for MEDLINE]
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