Rheological properties of cross-linked hyaluronan-gelatin hydrogels for tissue engineering.

Rheological properties of cross-linked hyaluronan-gelatin hydrogels for tissue engineering.
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DOI:
10.1002/mabi.200800141
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发表时间:
2009-01-09
影响因子:
4.6
通讯作者:
Prestwich, Glenn D.
Prestwich, Glenn D.
中科院分区:
工程技术3区
文献类型:
--
作者:
Vanderhooft, Janssen L.;Alcoutlabi, Mataz;Magda, Jules J.;Prestwich, Glenn D.

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Hydrogels that mimic the natural extracellular matrix (ECM) are used in three-dimensional cell culture, cell therapy, and tissue engineering. A semi-synthetic ECM based on cross-linked hyaluronana offers experimental control of both composition and gel stiffness. The mechanical properties of the ECM in part determine the ultimate cell phenotype. We now describe a rheological study of synthetic ECM hydrogels with storage shear moduli that span three orders of magnitude, from 11 to 3 500 Pa, a range important for engineering of soft tissues. The concentration of the chemically modified HA and the cross-linking density were the main determinants of gel stiffness. Increase in the ratio of thiol-modified gelatin reduced gel stiffness by diluting the effective concentration of the HA component.
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