SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2024, Vol. 68 ›› Issue (4): 156-164.DOI: 10.1016/j.cjche.2024.01.005

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Porous nanofibrous dressing enables mesenchymal stem cell spheroid formation and delivery to promote diabetic wound healing

Kexin Zhang1, Wenmin Zhang2, Heng An2, Zhe Huang2, Yanzhen Wen1, Xiangyu Jiao2, Yongqiang Wen2   

  1. 1. College of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China;
    2. Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry & Biological Engineering, University of Science & Technology Beijing, Beijing 100083, China
  • 收稿日期:2023-08-31 修回日期:2024-01-08 出版日期:2024-04-28 发布日期:2024-06-28
  • 通讯作者: Kexin Zhang,E-mail address:zhangkexin@tyust.edu.cn
  • 基金资助:
    This study was supported by Fundamental Research Program of Shanxi Province (202203021222199), the Taiyuan University of Science and Technology Scientific Research Initial Funding (20222090), and the National Natural Science Foundation of China (21975019).

Porous nanofibrous dressing enables mesenchymal stem cell spheroid formation and delivery to promote diabetic wound healing

Kexin Zhang1, Wenmin Zhang2, Heng An2, Zhe Huang2, Yanzhen Wen1, Xiangyu Jiao2, Yongqiang Wen2   

  1. 1. College of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China;
    2. Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry & Biological Engineering, University of Science & Technology Beijing, Beijing 100083, China
  • Received:2023-08-31 Revised:2024-01-08 Online:2024-04-28 Published:2024-06-28
  • Contact: Kexin Zhang,E-mail address:zhangkexin@tyust.edu.cn
  • Supported by:
    This study was supported by Fundamental Research Program of Shanxi Province (202203021222199), the Taiyuan University of Science and Technology Scientific Research Initial Funding (20222090), and the National Natural Science Foundation of China (21975019).

摘要: Delayed and nonhealing of diabetic wounds imposes substantial economic burdens and physical pain on patients. Mesenchymal stem cells (MSCs) promote diabetic wound healing. Particularly when MSCs aggregate into multicellular spheroids, their therapeutic effect is enhanced. However, traditional culture platforms are inadequate for the efficient preparation and delivery of MSC spheroids, resulting in inefficiencies and inconveniences in MSC spheroid therapy. In this study, a three-dimensional porous nanofibrous dressing (NFD) is prepared using a combination of electrospinning and homogeneous freeze-drying. Using thermal crosslinking, the NFD not only achieves satisfactory elasticity but also maintains notable cytocompatibility. Through the design of its structure and chemical composition, the NFD allows MSCs to spontaneously form MSC spheroids with controllable sizes, serving as MSC spheroid delivery systems for diabetic wound sites. Most importantly, MSC spheroids cultured on the NFD exhibit improved secretion of vascular endothelial growth factor, basic fibroblast growth factor, and hepatocyte growth factor, thereby accelerating diabetic wound healing. The NFD provides a competitive strategy for MSC spheroid formation and delivery to promote diabetic wound healing.

关键词: Electrospinning, Homogenization, Biomedical engineering, Nanomaterials, Stem cell spheroids, Diabetic wound healing

Abstract: Delayed and nonhealing of diabetic wounds imposes substantial economic burdens and physical pain on patients. Mesenchymal stem cells (MSCs) promote diabetic wound healing. Particularly when MSCs aggregate into multicellular spheroids, their therapeutic effect is enhanced. However, traditional culture platforms are inadequate for the efficient preparation and delivery of MSC spheroids, resulting in inefficiencies and inconveniences in MSC spheroid therapy. In this study, a three-dimensional porous nanofibrous dressing (NFD) is prepared using a combination of electrospinning and homogeneous freeze-drying. Using thermal crosslinking, the NFD not only achieves satisfactory elasticity but also maintains notable cytocompatibility. Through the design of its structure and chemical composition, the NFD allows MSCs to spontaneously form MSC spheroids with controllable sizes, serving as MSC spheroid delivery systems for diabetic wound sites. Most importantly, MSC spheroids cultured on the NFD exhibit improved secretion of vascular endothelial growth factor, basic fibroblast growth factor, and hepatocyte growth factor, thereby accelerating diabetic wound healing. The NFD provides a competitive strategy for MSC spheroid formation and delivery to promote diabetic wound healing.

Key words: Electrospinning, Homogenization, Biomedical engineering, Nanomaterials, Stem cell spheroids, Diabetic wound healing