Fang, D., Qin, Z., Zheng, L., Yew, P. Y. M., Jiang, X., Kai, D., Song, F., & Zhao, J. (2023). Ros-responsive nanocomposite scaffolds for sustained releasing puerarin to achieve chondroprotection in OA rats. Materials & Design, 233, 112214. https://doi.org/10.1016/j.matdes.2023.112214
Abstract:
Reactive Oxygen Species (ROS) plays an important role in osteoarthritis (OA) development and progression. Here, a ROS-responsive nanocomposite scaffold called PPE@rGO-Pue was fabricated by electrospinning, wherein PCL served as the backbone, PEGDA-EDT as the ROS responsive motif, and rGO as puerarin (Pue) carrier. The electrospun nanofibers composed of PEGDA-EDT and rGO exhibits accelerated Pue release behavior in the response to H2O2 through dose-dependent manner in 2 weeks. The interactions of PEGDA-EDT and Pue dramatically inhibits ROS production and activates antioxidant enzymes such as CAT, GSS, SOD, and GSH. Furthermore, the expression of inflammatory factor IL-1β had decrease significantly. Subsequently, PPE@rGO-Pue had shown chondro-protective effect for OA, which was evidenced by the suppression of MMPs, resulting in matrix degradation and the increase of Col2a1 and GAG that attenuated the cartilage erosion. In summary, this ROS-responsive electrospun nanofibers with sustained release of Pue exhibited antioxidative, anti-inflammatory, and chondro-protective potentials, suggesting that it could be an excellent drug carrier for OA therapy. This work may shed light on the design of antioxidative biomaterials for OA.
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
This research / project is supported by the A*STAR - RIE2025 MTC Individual Research Grants
Grant Reference no. : M22K2c0085
This research / project is supported by the A*STAR - Career Development Award
Grant Reference no. : 202D800033
This study was financially supported by the National Natural Science
Foundation of China (Grant No. 82160188), Natural Science Foundation
of Guangxi Province (No. 2023GXNSFFA026015) and the Guangxi Science and Technology Base and Talent Special Project (Grant No. GuikeAA19254002 and GuikeAD19254003)