1. Bio-based poly (γ-glutamic acid)-gelatin double-network hydrogel with high strength for wound healing.
- Author
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Dou C, Li Z, Luo Y, Gong J, Li Q, Zhang J, Zhang Q, and Qiao C
- Subjects
- Animals, Bandages, Glutamic Acid, Rats, Wound Healing, Gelatin, Hydrogels chemistry, Hydrogels pharmacology
- Abstract
Building bio-based hydrogels with high strength and biocompatibility is still a challenge. Herein, we successfully constructed a hybrid double-network (DN) full biological hydrogel with excellent mechanical properties and biocompatibility by introducing a physically cross-linked gelatin (GEL) network in a covalently cross-linked poly (γ-glutamic acid) (γ-PGA) network. The γ-PGA-GEL DN hydrogel demonstrated ultra-high compression performance (38 MPa), which was better than all currently reported γ-PGA-based hydrogels, and its tensile performance (0.27 MPa) was also satisfactory. Due to the unique multi-crosslinked DN structure, the γ-PGA-GEL DN hydrogel had better recovery and healing properties than those of the γ-PGA single-network (SN) hydrogel. In addition, the γ-PGA-GEL DN hydrogel exhibited good transparency, swelling and degradability. In vitro cell experiments demonstrated that the γ-PGA-GEL DN hydrogel was beneficial to cell adhesion and proliferation. The evaluation of the full-thickness skin defects model in rats exhibited that the γ-PGA-GEL DN hydrogel could significantly accelerate wound healing. These results indicated that the γ-PGA-GEL DN hydrogel was an ideal candidate material for wound dressing., (Copyright © 2022 Elsevier B.V. All rights reserved.)
- Published
- 2022
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