상위피인용논문
Dong Suk Yoon a 1, Yunki Lee b 1, Hyun Aae Ryu a, Yeonsue Jang a, Kyoung-Mi Lee a d, Yoorim Choi a d, Woo Jin Choi a, Moses Lee a, Kyung Min Park c, Ki Dong Park b, Jin Woo Lee a d
aDepartment of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 120-752, South Korea
bDepartment of Molecular Science and Technology, Ajou University, Suwon 443-749, South Korea
cDivision of Bioengineering, Incheon National University, Incheon 406-772, South Korea
dBrain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 120-752, South Korea
1These authors equally contributed to this study.
Corresponding author: correspondence to Jin Woo Lee
Abstract
In this study, we developed horseradish peroxidase (HRP)-catalyzed sprayable gelatin hydrogels (GH) as a bioactive wound dressing that can deliver cell-attracting chemotactic cytokines to the injured tissues for diabetic wound healing. We hypothesized that topical administration of chemokines using GH hydrogels might improve wound healing by inducing recruitment of the endogenous cells. Two types of chemokines (interleukin-8; IL-8, macrophage inflammatory protein-3α; MIP-3α) were simply loaded into GH hydrogels during in situ cross-linking, and then their wound-healing effects were evaluated in streptozotocin-induced diabetic mice. The incorporation of chemokines did not affect hydrogels properties including swelling ratio and mechanical stiffness, and the bioactivities of IL-8 and MIP-3α released from hydrogel matrices were stably maintained. In vivo transplantation of chemokine-loaded GH hydrogels facilitated cell infiltration into the wound area, and promoted wound healing with enhanced re-epithelialization/neovascularization and increased collagen deposition, compared with no treatment or the GH hydrogel alone. Based on our results, we suggest that cell-recruiting chemokine-loaded GH hydrogel dressing can serve as a delivery platform of various therapeutic proteins for wound healing applications.
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