A newly developed chemically crosslinked dextran-poly(ethylene glycol) hydrogel for cartilage tissue engineering


Jukes, Jojanneke M. and Aa, Leonardus J. van der and Hiemstra, Christine and Veen, Theun van and Dijkstra, Pieter J. and Zhong, Zhiyuan and Feijen, Jan and Blitterswijk, Clemens A. van and Boer, Jan de (2010) A newly developed chemically crosslinked dextran-poly(ethylene glycol) hydrogel for cartilage tissue engineering. Tissue engineering. Part A, 16 (2). pp. 565-573. ISSN 1937-3341

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Abstract:Cartilage tissue engineering, in which chondrogenic cells are combined with a scaffold, is a cell-based approach to regenerate damaged cartilage. Various scaffold materials have been investigated, among which are hydrogels. Previously, we have developed dextran-based hydrogels that form under physiological conditions via a Michaeltype addition reaction. Hydrogels can be formed in situ by mixing a thiol-functionalized dextran with a tetra-acrylated star poly(ethylene glycol) solution. In this article we describe how the degradation time of dextran–poly(ethylene glycol) hydrogels can be varied from 3 to 7 weeks by changing the degree of substitution of thiol groups on dextran. The degradation times increased slightly after encapsulation of chondrocytes in the gels. The effect of the gelation reaction on cell viability and cartilage formation in the hydrogels was investigated. Chondrocytes or embryonic stem cells were mixed in the aqueous dextran solution, and we confirmed that the cells survived gelation. After a 3-week culturing period, chondrocytes and embryonic stem cell–derived embryoid bodies were still viable and both cell types produced cartilaginous tissue. Our data demonstrate the potential of dextran hydrogels for cartilage tissue engineering strategies.
Item Type:Article
Copyright:© 2010 Mary Ann Liebert
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/68606
Official URL:https://doi.org/10.1089/ten.tea.2009.0173
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