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A strain-programmed patch for the healing of diabetic wounds

  • Georgios Theocharidis (Co-first Author)
  • , Hyunwoo Yuk* (Co-first Author)
  • , Heejung Roh (Co-first Author)
  • , Liu Wang (Co-first Author)
  • , Ikram Mezghani
  • , Jingjing Wu
  • , Antonios Kafanas
  • , Mauricio Contreras
  • , Brandon Sumpio
  • , Zhuqing Li
  • , Enya Wang
  • , Lihong Chen
  • , Chuan Fei Guo
  • , Navin Jayaswal
  • , Xanthi-Leda Katopodi
  • , Nikolaos Kalavros
  • , Christoph S. Nabzdyk
  • , Ioannis S. Vlachos
  • , Aristidis Veves*
  • , Xuanhe Zhao*
  • *Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

Diabetic foot ulcers and other chronic wounds with impaired healing can be treated with bioengineered skin or with growth factors. However, most patients do not benefit from these treatments. Here we report the development and preclinical therapeutic performance of a strain-programmed patch that rapidly and robustly adheres to diabetic wounds, and promotes wound closure and re-epithelialization. The patch consists of a dried adhesive layer of crosslinked polymer networks bound to a pre-stretched hydrophilic elastomer backing, and implements a hydration-based shape-memory mechanism to mechanically contract diabetic wounds in a programmable manner on the basis of analytical and finite-element modelling. In mouse and human skin, and in mini-pigs and humanized mice, the patch enhanced the healing of diabetic wounds by promoting faster re-epithelialization and angiogenesis, and the enrichment of fibroblast populations with a pro-regenerative phenotype. Strain-programmed patches might also be effective for the treatment of other forms of acute and chronic wounds. © The Author(s), under exclusive licence to Springer Nature Limited 2022.
Original languageEnglish
Pages (from-to)1118-1133
Number of pages16
JournalNature Biomedical Engineering
Volume6
Issue number10
Online published4 Jul 2022
DOIs
Publication statusPublished - Oct 2022
Externally publishedYes

Funding

We thank the Koch Institute Swanson Biotechnology Center for technical support, specifically K. Cormier and the Histology Core for the histological processing and analysis. This work was supported by Defense Advanced Research Projects Agency (DARPA) (5(GG0015670) to X.Z. and A.V.) and Department of Defense Congressionally Directed Medical Research Programs (CDMRP) (PR200524P1 to X.Z. and A.V.). A.V. received funding from the National Rongxiang Xu Foundation. G.T. received a George and Marie Vergottis Foundation Postdoctoral Fellowship. H.Y. acknowledges the financial support from Samsung Scholarship. H.R. acknowledges the financial support from Kwanjeong Educational Foundation Scholarship.

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