• Nano-Micro Letters
  • Vol. 16, Issue 1, 018 (2024)
Jiawei Kang1,†, Yaping Li2,3,†, Yating Qin2,3, Zhongming Huang4..., Yifan Wu1, Long Sun5, Cong Wang1, Wei Wang2,3,*, Gang Feng1,** and Yiying Qi1,***|Show fewer author(s)
Author Affiliations
  • 1Department of Orthopaedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou City, 310009 Zhejiang Province, People’s Republic of China
  • 2College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
  • 3ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215 Zhejiang, People’s Republic of China
  • 4The Affiliated Nanhua Hospital, Orthopedic Research Centre, Hengyang Medical School, University of South China, Hengyang, 421001 Hunan, People’s Republic of China
  • 5Department of Radiology, Jining No. 1 People’s Hospital, Jining Medical University, Jining, 272000 Shandong, People’s Republic of China
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    DOI: 10.1007/s40820-023-01228-w Cite this Article
    Jiawei Kang, Yaping Li, Yating Qin, Zhongming Huang, Yifan Wu, Long Sun, Cong Wang, Wei Wang, Gang Feng, Yiying Qi. In Situ Deposition of Drug and Gene Nanoparticles on a Patterned Supramolecular Hydrogel to Construct a Directionally Osteochondral Plug[J]. Nano-Micro Letters, 2024, 16(1): 018 Copy Citation Text show less

    Abstract

    The integrated repair of bone and cartilage boasts advantages for osteochondral restoration such as a long-term repair effect and less deterioration compared to repairing cartilage alone. Constructing multifactorial, spatially oriented scaffolds to stimulate osteochondral regeneration, has immense significance. Herein, targeted drugs, namely kartogenin@polydopamine (KGN@PDA) nanoparticles for cartilage repair and miRNA@calcium phosphate (miRNA@CaP) NPs for bone regeneration, were in situ deposited on a patterned supramolecular-assembled 2-ureido-4 [lH]-pyrimidinone (UPy) modified gelation hydrogel film, facilitated by the dynamic and responsive coordination and complexation of metal ions and their ligands. This hydrogel film can be rolled into a cylindrical plug, mimicking the Haversian canal structure of natural bone. The resultant hydrogel demonstrates stable mechanical properties, a self-healing ability, a high capability for reactive oxygen species capture, and controlled release of KGN and miR-26a. In vitro, KGN@PDA and miRNA@CaP promote chondrogenic and osteogenic differentiation of mesenchymal stem cells via the JNK/RUNX1 and GSK-3β/β-catenin pathways, respectively. In vivo, the osteochondral plug exhibits optimal subchondral bone and cartilage regeneration, evidenced by a significant increase in glycosaminoglycan and collagen accumulation in specific zones, along with the successful integration of neocartilage with subchondral bone. This biomaterial delivery approach represents a significant toward improved osteochondral repair.
    Jiawei Kang, Yaping Li, Yating Qin, Zhongming Huang, Yifan Wu, Long Sun, Cong Wang, Wei Wang, Gang Feng, Yiying Qi. In Situ Deposition of Drug and Gene Nanoparticles on a Patterned Supramolecular Hydrogel to Construct a Directionally Osteochondral Plug[J]. Nano-Micro Letters, 2024, 16(1): 018
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