Dedifferentiated fat cells-derived exosomes (DFATs-Exos) loaded in GelMA accelerated diabetic wound healing through Wnt/β-catenin pathway
Abstract Background Diabetic foot ulcers pose significant challenges for clinicians worldwide. Cell-free exosome therapy holds great potential for wound healing. Dedifferentiated fat cells (DFATs) have been used in tissue engineering and regeneration, but there are no reports on the use of DFATs-der...
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| Language: | English |
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BMC
2025-02-01
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| Series: | Stem Cell Research & Therapy |
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| Online Access: | https://doi.org/10.1186/s13287-025-04205-9 |
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| author | Miao Dong Xuan Ma Facheng Li |
| author_facet | Miao Dong Xuan Ma Facheng Li |
| author_sort | Miao Dong |
| collection | DOAJ |
| description | Abstract Background Diabetic foot ulcers pose significant challenges for clinicians worldwide. Cell-free exosome therapy holds great potential for wound healing. Dedifferentiated fat cells (DFATs) have been used in tissue engineering and regeneration, but there are no reports on the use of DFATs-derived exosomes in diabetic wound repair. Objectives This study aims to investigate whether DFATs-Exos accelerated diabetic wound healing and explore its potential mechanism. Methods In vitro, DFATs-Exos were harvested from adipose tissue and used to treat endothelial cells (ECs) and fibroblasts. XAV939 was used as a Wnt/β-catenin pathway inhibitor. The biocompatibility of gelatin methacryloyl (GelMA) hydrogel was assessed. In vivo, DFAT-derived exosomes were encapsulated in 10% GelMA hydrogel and applied to a diabetic wound model. Histological analysis and wound closure rates were evaluated. Results DFATs-Exos promoted angiogenesis in ECs and significantly alleviated the high glucose-induced inhibition of cell proliferation and migration by activating the Wnt/β-catenin pathway. In vivo, compared to DFAT-Exos or GelMA alone, the DFAT-Exos/GelMA combination accelerated wound closure and enhanced collagen maturity. Conclusion The DFAT-Exos/GelMA hydrogel significantly promoted wound healing in a diabetic animal model through activation of the Wnt/β-catenin signaling pathway. |
| format | Article |
| id | doaj-art-19e7f866d7ab43539052a1a4fbc175a2 |
| institution | DOAJ |
| issn | 1757-6512 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | BMC |
| record_format | Article |
| series | Stem Cell Research & Therapy |
| spelling | doaj-art-19e7f866d7ab43539052a1a4fbc175a22025-08-20T03:04:27ZengBMCStem Cell Research & Therapy1757-65122025-02-0116111710.1186/s13287-025-04205-9Dedifferentiated fat cells-derived exosomes (DFATs-Exos) loaded in GelMA accelerated diabetic wound healing through Wnt/β-catenin pathwayMiao Dong0Xuan Ma1Facheng Li2Department of Body Contouring and Fat grafting Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeDepartment of Body Contouring and Fat grafting Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeDepartment of Body Contouring and Fat grafting Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeAbstract Background Diabetic foot ulcers pose significant challenges for clinicians worldwide. Cell-free exosome therapy holds great potential for wound healing. Dedifferentiated fat cells (DFATs) have been used in tissue engineering and regeneration, but there are no reports on the use of DFATs-derived exosomes in diabetic wound repair. Objectives This study aims to investigate whether DFATs-Exos accelerated diabetic wound healing and explore its potential mechanism. Methods In vitro, DFATs-Exos were harvested from adipose tissue and used to treat endothelial cells (ECs) and fibroblasts. XAV939 was used as a Wnt/β-catenin pathway inhibitor. The biocompatibility of gelatin methacryloyl (GelMA) hydrogel was assessed. In vivo, DFAT-derived exosomes were encapsulated in 10% GelMA hydrogel and applied to a diabetic wound model. Histological analysis and wound closure rates were evaluated. Results DFATs-Exos promoted angiogenesis in ECs and significantly alleviated the high glucose-induced inhibition of cell proliferation and migration by activating the Wnt/β-catenin pathway. In vivo, compared to DFAT-Exos or GelMA alone, the DFAT-Exos/GelMA combination accelerated wound closure and enhanced collagen maturity. Conclusion The DFAT-Exos/GelMA hydrogel significantly promoted wound healing in a diabetic animal model through activation of the Wnt/β-catenin signaling pathway.https://doi.org/10.1186/s13287-025-04205-9Diabetic wound healingDedifferentiated fat cellsExosomesGelMA hydrogelWnt / β-catenin pathway |
| spellingShingle | Miao Dong Xuan Ma Facheng Li Dedifferentiated fat cells-derived exosomes (DFATs-Exos) loaded in GelMA accelerated diabetic wound healing through Wnt/β-catenin pathway Stem Cell Research & Therapy Diabetic wound healing Dedifferentiated fat cells Exosomes GelMA hydrogel Wnt / β-catenin pathway |
| title | Dedifferentiated fat cells-derived exosomes (DFATs-Exos) loaded in GelMA accelerated diabetic wound healing through Wnt/β-catenin pathway |
| title_full | Dedifferentiated fat cells-derived exosomes (DFATs-Exos) loaded in GelMA accelerated diabetic wound healing through Wnt/β-catenin pathway |
| title_fullStr | Dedifferentiated fat cells-derived exosomes (DFATs-Exos) loaded in GelMA accelerated diabetic wound healing through Wnt/β-catenin pathway |
| title_full_unstemmed | Dedifferentiated fat cells-derived exosomes (DFATs-Exos) loaded in GelMA accelerated diabetic wound healing through Wnt/β-catenin pathway |
| title_short | Dedifferentiated fat cells-derived exosomes (DFATs-Exos) loaded in GelMA accelerated diabetic wound healing through Wnt/β-catenin pathway |
| title_sort | dedifferentiated fat cells derived exosomes dfats exos loaded in gelma accelerated diabetic wound healing through wnt β catenin pathway |
| topic | Diabetic wound healing Dedifferentiated fat cells Exosomes GelMA hydrogel Wnt / β-catenin pathway |
| url | https://doi.org/10.1186/s13287-025-04205-9 |
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