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Int. J. Mol. Sci. 2018, 19(4), 1253; https://doi.org/10.3390/ijms19041253

Mesenchylmal Stem Cell Culture on Poly(N-isopropylacrylamide) Hydrogel with Repeated Thermo-Stimulation

1
Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
2
Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan
3
Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, 8-1 Kawada-cho, Shinjuku, Tokyo 162-8666, Japan
These authors contributed equally to this work.
Present address: Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan.
*
Authors to whom correspondence should be addressed.
Received: 22 March 2018 / Revised: 11 April 2018 / Accepted: 18 April 2018 / Published: 21 April 2018
(This article belongs to the Special Issue Smart Polymers for Biomedical Applications)
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Abstract

We prepared thermoresponsive hydrogels by mixing poly(N-isopropylacrylamide) (PNIPAAm) derivatives as the main chain components, octa-arm polyethylene glycol (PEG) as a crosslinker, and the Arg-Gly-Asp-Ser (RGDS) peptides as cell adhesion units. Human bone marrow-derived mesenchymal stem cells (hbmMSCs) were cultured on the hydrogels. The PNIPAAm gel prepared by the post-crosslinking gelation method was revealed to be cytocompatible and showed temperature-dependent changes in mechanical properties. Repeated changes in the swelling ratio of the PNIPAAm gel affected the shape of the hbmMSCs. With respect to both cytocompatibility and reversibility of changes in mechanical properties, the PNIPAAm gel system could be potentially useful for the analysis of cell mechanobiology. View Full-Text
Keywords: poly(N-isopropylacrylamide); hydrogel; mesenchymal stem cell; cell culture; mechanobiology poly(N-isopropylacrylamide); hydrogel; mesenchymal stem cell; cell culture; mechanobiology
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Akimoto, A.M.; Niitsu, E.H.; Nagase, K.; Okano, T.; Kanazawa, H.; Yoshida, R. Mesenchylmal Stem Cell Culture on Poly(N-isopropylacrylamide) Hydrogel with Repeated Thermo-Stimulation. Int. J. Mol. Sci. 2018, 19, 1253.

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