期刊
CHEMICAL ENGINEERING JOURNAL
卷 413, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.127512
关键词
Supramolecular gels; Self-healing; Host-guest interactions; Bone regeneration; Mechanical robustness
资金
- National Natural Science Foundation of China [51603041, 21775025, U1505221, U1705281]
- Natural Science Foundation of Fujian Province of China [2017Y0058]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT15R11]
A silk fibroin-based hydrogel was developed using a host-guest assembly strategy, showing self-healing properties and robust mechanical performance for bone regeneration applications.
Despite advances in the development of osteo-regenerative biomaterials, current products are vulnerable to stress-induced formation of cracks, resulting in the loss of functionality and a limited lifespan. In the present study, a strategy based on host-guest assembly was developed to fabricate a silk fibroin-based inorganic-organic hybrid hydrogel (termed SF@HG@HA) in which silk fibroin was used as a polymer template to tether host (?-cyclodextrin) and guest (cholesterol) monomers, respectively. Due to dynamic host-guest interactions, the prepared hydrogel could repair itself spontaneously when damaged, without the assistance of any external stimuli, mimicking the self-healing characteristics of native bone tissue. Furthermore, the efficient energy dissipation mechanism provided by the host-guest crosslinking strategy endowed the hydrogel with robust mechanical properties to bear substantial mechanical loading. SF@HG@HA was shown to support cell proliferation and osteogenic differentiation in vitro and accelerate bone regeneration in critical-size rat femoral defects in vivo. Together, the silk fibroin-based self-healing hydrogel with robust mechanical properties shows potential applications in the reconstruction of bone defects, which may provide new directions for the design of functional biomaterials for tissue regeneration.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据