Enhanced osteoarthritis treatment using an injectable pH-responsive and cartilage-targeted liposome-anchored kartogenin-incorporated methacrylated gelatin hydrogel microspheres

May 16, 2025International journal of biological macromolecules

Improved osteoarthritis treatment using injectable pH-sensitive gel spheres that deliver cartilage-targeting kartogenin

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Abstract

Hydrogel microspheres designed for cartilage repair in osteoarthritis exhibited significant cartilage-targeting ability and pH responsiveness.

  • A novel nanomaterial was synthesized using liposomes that were functionalized with cartilage-targeting peptides.
  • Hydrogel microspheres containing the nanomaterial effectively promoted chondrogenesis and showed anti-inflammatory effects in vitro.
  • Transcriptomic analysis indicated that chondrogenesis was primarily induced through collagen trimer formation and extracellular matrix biosynthesis.
  • In vivo experiments in a mouse model demonstrated the sustained release of the hydrogel microspheres and their ability to significantly inhibit cartilage degeneration.

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