Peptide-functionalized oxime hydrogels with tunable mechanical properties and gelation behavior.
Peptide-functionalized oxime hydrogels with tunable mechanical properties and gelation behavior.
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DOI:
10.1021/bm401133r
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发表时间:
2013-10-14
影响因子:
6.2
通讯作者:
Becker, Matthew L.
中科院分区:
文献类型:
--
作者:
Lin, Fei;Yu, Jiayi;Tang, Wen;Zheng, Jukuan;Defante, Adrian;Guo, Kai;Wesdemiotis, Chrys;Becker, Matthew L.
We demonstrate the formation of polyethylene glycol (PEG) based hydrogels via oxime ligation and the photo-initiated thiol-ene 3D patterning of peptides within the hydrogel matrix post-gelation. The gelation process and final mechanical strength of hydrogels can be tuned using pH and the catalyst concentration. The time scale to reach the gel point and complete gelation can be shortened from hours to seconds using both pH and aniline catalyst, which facilitates the tuning of the storage modulus from 0.3 kPa to over 15 kPa. Azide and alkene functionalized hydrogels were also synthesized and we have shown the post gelation “click” type Husigen 1,3 cycloaddition and thiolene-based radical reactions for spatially defined peptide incorporation. These materials are the initial demonstration for translationally relevant hydrogel materials that possess tunable mechanical regimes attractive to soft tissue engineering and possess atom neutral chemistries attractive for post gelation patterning in the presence or absence of cells.
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