Fabrication of modified dextran-gelatin in situ forming hydrogel and application in cartilage tissue engineering
| Autor: | Teng Fei, Xiumei Mo, Changan Guo, Shuo Li, Zuoqin Yan, Xiaohua Geng, Jian-feng Pan, Liu Yuan, Hengfeng Yuan, Wenshuai Fan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
food.ingredient Materials science Biocompatibility Cartilage Regeneration (biology) technology industry and agriculture Biomedical Engineering macromolecular substances General Chemistry General Medicine complex mixtures Gelatin Surgery chemistry.chemical_compound Dextran food medicine.anatomical_structure chemistry Tissue engineering In vivo Self-healing hydrogels medicine General Materials Science Biomedical engineering |
| Zdroj: | Journal of materials chemistry. B. 2(47) |
| ISSN: | 2050-7518 |
| Popis: | Hydrogels play a very important role in cartilage tissue engineering. Here, we oxidized dextran (Odex) and modified gelatin (Mgel) to fabricate a fast forming hydrogel without the addition of a chemical crosslinking agent. The dynamic gelling process was measured through rheological measurements. The microstructure was examined by lyophilizing to get porous scaffolds. Biological assessment was performed through CCK-8 assays by using synovium-derived mesenchymal cells (SMSCs) at 1, 3, 7 and 14 days. In vivo evaluation for application in cartilage tissue engineering was performed 8 weeks after subcutaneous injection of SMSC-loaded Odex/Mgel hydrogels combined with TGF-β3 in the dorsa of nude mice. According to the results, a fast forming hydrogel was obtained by simply modifying dextran and gelatin. Moreover, the Odex/Mgel hydrogel exhibited good biocompatibility in cultures of SMSCs and a homogeneous distribution of live cells was achieved inside the hydrogels. After 8 weeks, newly formed cartilage was achieved in the dorsa of nude mice; no inflammatory reaction was observed and high production of GAGs was shown. The method provides a strategy for the design and fabrication of fast in situ forming hydrogels. The Odex/Mgel hydrogel could be used for the regeneration of cartilage in tissue engineering. |
| Databáze: | OpenAIRE |
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