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Sci Rep. 2016 Jan 13;6:18948. doi: 10.1038/srep18948.

Scalable topographies to support proliferation and Oct4 expression by human induced pluripotent stem cells.

Author information

1
Centre for Stem Cells and Regenerative Medicine, King's College London, 28th Floor, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, United Kingdom.
2
MIRA Institute for Biomedical Technology and Technical Medicine, Enschede, The Netherlands.
3
Merln Institute for Technology-inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands.
4
Materiomics b.v., Maastricht, The Netherlands.

Abstract

It is well established that topographical features modulate cell behaviour, including cell morphology, proliferation and differentiation. To define the effects of topography on human induced pluripotent stem cells (iPSC), we plated cells on a topographical library containing over 1000 different features in medium lacking animal products (xeno-free). Using high content imaging, we determined the effect of each topography on cell proliferation and expression of the pluripotency marker Oct4 24 h after seeding. Features that maintained Oct4 expression also supported proliferation and cell-cell adhesion at 24 h, and by 4 days colonies of Oct4-positive, Sox2-positive cells had formed. Computational analysis revealed that small feature size was the most important determinant of pluripotency, followed by high wave number and high feature density. Using this information we correctly predicted whether any given topography within our library would support the pluripotent state at 24 h. This approach not only facilitates the design of substrates for optimal human iPSC expansion, but also, potentially, identification of topographies with other desirable characteristics, such as promoting differentiation.

PMID:
26757610
PMCID:
PMC4725348
DOI:
10.1038/srep18948
[Indexed for MEDLINE]
Free PMC Article

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