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Lee M, Ahn JI, Ahn JY, Yang WS, Hubbell JA, Lim JM, Lee ST. Difference in suitable mechanical properties of three-dimensional, synthetic scaffolds for self-renewing mouse embryonic stem cells of different genetic backgrounds. J Biomed Mater Res B Appl Biomater 2016; 105:2261-2268. [PMID: 27459401 DOI: 10.1002/jbm.b.33763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/10/2016] [Accepted: 07/11/2016] [Indexed: 11/12/2022]
Abstract
We evaluated whether the genetic background of embryonic stem cells (ESCs) affects the properties suitable for three-dimensional (3D) synthetic scaffolds for cell self-renewal. Inbred R1 and hybrid B6D2F1 mouse ESC lines were cultured for 7 days in hydrogel scaffolds with different properties derived from conjugating 7.5, 10, 12.5, or 15% (wt/vol) vinylsulfone-functionalized three-, four-, or eight-arm polyethylene glycol (PEG) with dicysteine-containing crosslinkers with an intervening matrix metalloproteinase-specific cleavage sites. Cell proliferation and expression of self-renewal-related genes and proteins by ESCs cultured in feeder-free or containing 2D culture plate or 3D hydrogel were monitored. As a preliminary experiment, the E14 ESC-customized synthetic 3D microenvironment did not maintain self-renewal of either the R1 or B6D2F1 ESCs. The best R1 cell proliferation (10.04 vs. 0.16-4.39; p < 0.0001) was observed in the four-arm 7.5% PEG-based hydrogels than those with other properties, whereas the F1 ESCs showed better proliferation when they were embedded in the three-arm 10% hydrogels. Self-renewal-related gene and protein expression by ESCs after feeder-free 3D culture was generally maintained compared with the feeder-containing 2D culture, but expression patterns and quantities differed. However, the feeder-free 3D culture yielded better expression than the feeder-free 2D culture. In conclusion, genetic background determined the suitability of hydrogel scaffolds for self-renewal of ESCs, which requires customization for the mechanical properties of each cell line. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 2261-2268, 2017.
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Affiliation(s)
- Myungook Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-921, Korea
| | - Jong Il Ahn
- Research Institutes of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Korea
| | - Ji Yeon Ahn
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-921, Korea
| | - Woo Sub Yang
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-921, Korea
| | - Jeffrey A Hubbell
- Institute of Bioengineering (IBI) and Institute of Chemical Sciences and Engineering (ISIC), School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland; Institute for Molecular Engineering, University of Chicago, IL 60637, USA
| | - Jeong Mook Lim
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-921, Korea.,Research Institutes of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Korea
| | - Seung Tae Lee
- Department of Animal Life Science and Division of Applied Animal Science, Kangwon National University, Chuncheon, 200-701, Korea
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