Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (1): 1.doi: 10.7503/cjcu20170635

• Review • Previous Articles     Next Articles

Progress in Hydrogels Based on Regenerated Silk Fibroin

LONG Xingtong1, GUAN Juan1,*(), CHEN Xin2, SHAO Zhengzhong2   

  1. 1. School of Materials Science and Engineering, International Research Center for Advanced Structural and Biomaterials, Beihang University, Beijing 100191, China
    2. State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science,Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
  • Received:2017-09-21 Online:2018-01-10 Published:2017-12-13
  • Contact: GUAN Juan E-mail:juan.guan@buaa.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21574023, 21574024, 51503009)

Abstract:

Regenerated silk fibroin(RSF) is a fibrillar protein obtained from Bombyx mori silkworm silk. Recently, RSF-based hydrogels have attracted extensive research interest, which has yielded an improved understanding in the gelling mechanisms, physical and mechanical properties as well as the applications in regenerative medicine and tissue engineering. Mechanistically, RSF hydrogel networks can be formed via two pathways, chemical cross-linking including enzymatic cross-linking, and physical cross-linking through conformational transition, during which thermodynamically more stable β-sheet structures are induced. An advantage of RSF hydrogels is that the physical and mechanical properties of hydrogels can be further controlled by the β-sheet content in the conformation on top of concentration and cross-linking density. RSF can be mixed with other polymers and/or inorganic components to prepare composite hydrogels for a wider spectrum of mechanical properties. Furthermore, we summarize most recent applications of RSF hydrogels in biomaterials, including controlled drug release, muscle, tendon and bone tissue engineering.

Key words: Biopolymer, Protein, Scaffold, Conformation, Regenerative medicine, Tissue engineering, Regenerated silk fibroin hydrogel

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