Neurosphere based differentiation of human IPSC improves astrocyte differentiation

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Abstract

Neural progenitor cells (NPCs) derived from human induced pluripotent stem cells (iPSCs) are traditionally maintained and proliferated utilizing two-dimensional (2D) adherent monolayer culture systems. However, NPCs cultured using this system hardly reflect the intrinsic spatial development of brain tissue. In this study, we determined that culturing iPSC-derived NPCs as three-dimensional (3D) floating neurospheres resulted in increased expression of the neural progenitor cell (NPC) markers, PAX6 and NESTIN . Expansion of NPCs in 3D culture methods also resulted in a more homogenous PAX6 expression when compared to 2D culture methods. Furthermore, the 3D propagation method for NPCs resulted in a significant higher expression of the astrocyte markers GFAP and aquaporin 4 ( AQP4 ) in the differentiated cells. Thus, our 3D propagation method could constitute a useful tool to promote NPC homogeneity and also to increase the differentiation potential of iPSC towards astrocytes.

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Zhou, S., Szczesna, K., Ochalek, A., Kobolák, J., Varga, E., Nemes, C., … Avci, H. X. (2016). Neurosphere based differentiation of human IPSC improves astrocyte differentiation. Stem Cells International, 2016. https://doi.org/10.1155/2016/4937689

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