Chinese Journal of Tissue Engineering Research ›› 2024, Vol. 28 ›› Issue (25): 4079-4086.doi: 10.12307/2024.193

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Current status and future of treatment of pulmonary fibrosis by mesenchymal stem cells and extracellular vesicles

Wang Yanyang1, 2, Liu Chan1, 2, Yu Limei1, 2, He Zhixu1, 2, 3   

  1. 1Key Cell Engineering Laboratory, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China; 2Ministry of Tissue Damage Repair and Regenerative Medicine Jointly Established a Collaborative Innovation Center, Zunyi Medical University, Zunyi 563000, Guizhou Province, China; 3Guizhou Children’s Hospital; Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Received:2023-07-08 Accepted:2023-08-24 Online:2024-09-08 Published:2023-11-24
  • Contact: He Zhixu, Chief physician, Professor, Doctoral supervisor, Key Cell Engineering Laboratory, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China; Ministry of Tissue Damage Repair and Regenerative Medicine Jointly Established a Collaborative Innovation Center, Zunyi Medical University, Zunyi 563000, Guizhou Province, China; Guizhou Children’s Hospital; Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • About author:Wang Yanyang, Master candidate, Key Cell Engineering Laboratory, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China; Ministry of Tissue Damage Repair and Regenerative Medicine Jointly Established a Collaborative Innovation Center, Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Supported by:
    2022 National Natural Science Foundation (General Program), No. 32270848 (to HZX); 2020 Ministry of Education Collaborative Innovation Center Construction Project: Ministry of Tissue Damage Repair and Regenerative Medicine Jointly Established a Collaborative Innovation Center, No. [2020]39 (to HZX); 2020 Guizhou Provincial Science and Technology Support Plan Project, No. [2020]4Y192 (to HZX)

Abstract: BACKGROUND: Despite a series of clinical treatment measures, the treatment of pulmonary fibrosis still faces challenges. In recent years, mesenchymal stem cells and their extracellular vesicles have attracted extensive attention as an emerging therapeutic strategy and are considered to be a promising means of treating pulmonary fibrosis. 
OBJECTIVE: To systematically review the application of mesenchymal stem cells and their extracellular vesicles in the treatment of pulmonary fibrosis, to comprehensively understand their therapeutic mechanism, efficacy evaluation and problems, and provide reference and guidance for further research and clinical application in the future.
METHODS: Using Chinese and English search terms “mesenchymal stem cells”, “ mesenchymal stem cell extracellular vesicles”, “pulmonary fibrosis”, we searched the CNKI and PubMed electronic journal databases. By means of manual reading and eliminating duplicate articles, 112 articles were selected, but 58 Chinese and English articles were finally included for summary.
RESULTS AND CONCLUSION: (1) Mesenchymal stem cells and their extracellular vesicles have shown great potential in the treatment of pulmonary fibrosis, such as regulating inflammatory responses, inhibiting fibroblast proliferation, and promoting damaged tissue repair. Preliminary results from clinical trials have also shown some effects of the treatment, including improved lung function and quality of life in patients. (2) However, mesenchymal stem cells and extracellular vesicles in the treatment of pulmonary fibrosis still face some challenges. During treatment, technical challenges such as cell migration and intrachistological localization need to be addressed for it to accurately reach the damaged lung tissue. Furthermore, its long-term safety also needs to be further studied and improved. For translational medicine development, standardized procedures such as cell collection, cell isolation, cell culture, cell harvesting, and cell identification need to be refined. (3) Despite these challenges, through the joint efforts of scientific researchers and medical personnel, these problems are expected to be gradually solved. In the future, we can further improve treatment outcomes by optimizing treatment regimens and exploring individualized treatments. At the same time, in-depth research on the therapeutic mechanism of stem cells and their extracellular vesicles is expected to develop more efficient and safe therapeutic strategies. 

Key words: pulmonary fibrosis, mesenchymal stem cell, extracellular vesicle, review

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