• Advanced Fiber Materials
  • Vol. 7, Issue 1, 00487 (2025)
En Xie1, Xu Zhang2, Yang Zhou1, Yang Yang1..., Yeqian Lin1, Yunfei Niu3,4,*, Jie Wei1,** and Dejian Li2,***|Show fewer author(s)
Author Affiliations
  • 1Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology, Shanghai 200237, China
  • 2Department of Orthopaedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
  • 3Department of Trauma Orthopaedics, the first affiliated hospital of Naval Medical University, Shanghai 200433, China
  • 4Department of Orthopaedics, Shidong Hospital affiliated to University of Shanghai for Science and Technology, Shanghai 200438, China
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    DOI: 10.1007/s42765-024-00487-5 Cite this Article
    En Xie, Xu Zhang, Yang Zhou, Yang Yang, Yeqian Lin, Yunfei Niu, Jie Wei, Dejian Li. A Polyphenol–Metal Network of Propyl Gallate Gallium/Hafnium Oxide on Polyimide Fibers for Facilitating Ligament–Bone Healing[J]. Advanced Fiber Materials, 2025, 7(1): 00487 Copy Citation Text show less

    Abstract

    The development of an artificial ligament for promoting ligament–bone healing in anterior cruciate ligament (ACL) reconstruction still faces enormous challenges. Herein, a polyphenol–metal network (PMN) composed of propyl gallate (PG)-gallium (Ga) and -hafnium oxide (HfO2) is deposited on polyimide fiber (PIF) woven fabric (PGPH) for artificial ligament application. Compared with PIF, the surface properties (e.g., hydrophilicity) of PMN of PGPH significantly improve. The in vitro cell experiments confirm that PGPH remarkably facilitates proliferation and osteoblastic differentiation due to the synergistic effects of enhanced surface properties and the sustained release of Hf ions. Moreover, PGPH inhibits M1 macrophage polarization, thereby reducing the production of pro-inflammatory cytokines while improving anti-inflammatory cytokines secretion by favoring M2 macrophage polarization, displaying anti-inflammatory effects due to the slow release of PG. Compared with PIF, PGPH exhibits adequate antibacterial activity in vitro and effectively prevents bacterial infection in vivo because of the sustained release of Ga ions, which damages the bacterial membrane and leads to the leakage of cell components (such as proteins). The in vivo experiments reveal that PGPH obviously inhibits fibrous encapsulation formation while promoting bone regeneration for ligament–bone healing. In short, PGPH creates a favorable microenvironment for enhancing M2 macrophage polarization and osteoblastic differentiation, which facilitates ligament–bone healing, thereby exhibiting enormous promise for ACL restoration.
    En Xie, Xu Zhang, Yang Zhou, Yang Yang, Yeqian Lin, Yunfei Niu, Jie Wei, Dejian Li. A Polyphenol–Metal Network of Propyl Gallate Gallium/Hafnium Oxide on Polyimide Fibers for Facilitating Ligament–Bone Healing[J]. Advanced Fiber Materials, 2025, 7(1): 00487
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