Visible-Light Cross-Linkable Multifunctional Hydrogels Loaded with Exosomes Facilitate Full-Thickness Skin Defect Wound Healing through Participating in the Entire Healing Process

May 10, 2024ACS applied materials & interfaces

Light-Activated Hydrogels with Exosomes Help Heal Deep Skin Wounds by Supporting All Healing Stages

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Abstract

The all-in-one OD/GM/QCS@Exo hydrogel demonstrated significant wound-healing promotion effects.

  • The hydrogel was prepared with catechol-modified oxidized hyaluronic acid, methylacrylylated gelatin, and quaternized chitosan.
  • Cross-linking was achieved using visible light, which enhanced injectability and biocompatibility.
  • Strong adhesion and mechanical strength were attributed to the incorporation of catechol groups and multicross-linked networks.
  • Antibacterial, anti-inflammatory, and antioxidant properties were observed in the hydrogel.
  • The hydrogel-mediated release of exosomes significantly promoted cellular proliferation, migration, and the formation of new blood vessels.

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