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dc.contributor.authorShen, Z.en
dc.contributor.authorBi, J.en
dc.contributor.authorShi, B.en
dc.contributor.authorNguyen, D.en
dc.contributor.authorXian, C.en
dc.contributor.authorZhang, H.en
dc.contributor.authorDai, S.en
dc.identifier.citationSoft Matter, 2012; 8(27):7250-7257en
dc.description.abstractIn this study, we report the application of a biocompatible thermo-reversible hydrogel, made from thermo-sensitive poly(N-isopropylacrylamide-co-acrylic acid) (P(NIPAM-AA)) microgels, for expanding stem cells in three-dimensions (3-D). The P(NIPAM-AA) microgels were synthesized by emulsion polymerization with their thermo-responsive phase transition behaviors being examined by light scattering and rheological methods. The viability of the microgel-exposed C3H/10T1/2 cells compared to the control cells is close to 100%, indicating the non-cytotoxicity of the synthesized microgels. At 37 °C, rheological measurements reveal the formation of hydrogels from 30 mg mL⁻¹ microgel dispersions. The cross-sectional morphologies of the hydrogels show the interconnected porous structure. The 3-D stem cell culture system can be achieved by heating the microgel and cell mixtures to 37 °C. The increase of the viable stem cells cultured suggests that the in situ formed hydrogels support stem cell proliferation. The recovery of the 3-D cultured stem cells can be easily accomplished by cooling the culture system to room temperature. The released 3-D cultured cells can further adhere to a 2-D substrate, implying that the cultured stem cells are not only alive, but also retain the capability of migration. Therefore, the in situ formed thermo-reversible P(NIPAM-AA) hydrogels can be employed to expand stem cells in 3-D for further applications in tissue engineering.en
dc.description.statementofresponsibilityZheyu Shen, Jingxiu Bi, Bingyang Shi, Dzuy Nguyen, Cory J. Xian, Hu Zhang and Sheng Daien
dc.publisherRoyal Society of Chemistryen
dc.rights© The Royal Society of Chemistryen
dc.titleExploring thermal reversible hydrogels for stem cell expansion in three-dimensionsen
dc.typeJournal articleen
pubs.library.collectionChemical Engineering publicationsen
dc.identifier.orcidBi, J. [0000-0001-7056-8572]en
dc.identifier.orcidXian, C. [0000-0002-8467-2845]en
dc.identifier.orcidZhang, H. [0000-0003-4178-6401]en
Appears in Collections:Chemical Engineering publications

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