期刊
JOURNAL OF MATERIALS CHEMISTRY B
卷 2, 期 20, 页码 3123-3132出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4tb00107a
关键词
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资金
- National Key Technology R&D Program of China [2012BA123B02]
- National Natural Science Foundation of China [31100704, 81271616]
- Foundation for Innovative Research Groups of the NNSFC [61121004]
- Fundamental Research Funds for the Central Universities (Hust) [2013TS085]
Photo-cross-linkable physical hydrogels based on the coiled-coil region of the cartilage oligomeric matrix protein and polyethylene glycol diacrylate were designed and synthesized to mimic the natural extracellular matrix for three-dimensional cell culture. The engineered polypeptides (Pcys and RGDPcys) were modified with polyethylene glycol diacrylate to form photo-cross-linkable multifunctional macromers via the Michael-type addition reaction between the cysteine residues and acrylates. Gel formation was confirmed by rheological measurements. The swelling ratio and stability of 10% w/v RGDP-PEGacrylate6k hydrogel were 38% and 15 days, respectively. Spreading and migration of encapsulated fibroblast cells were observed in these physical hydrogels, while round cells were observed in a covalent control hydrogel. In addition, rapid self-healing of these physical hydrogels can provide a flexible way to build tissue by self-assembly and bottom-up approach. The results demonstrate that such physical hydrogels are expected to have great potential applications in tissue engineering.
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