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Rat Hair Follicle Stem Cell-Derived Exosomes: Isolation, Characterization and Comparative Analysis of Their In Vitro
Patrícia Sousa1,2,3, Bruna Lopes1,2,3, Ana Catarina Sousa1,2,3
1Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, 4050-313 Porto, Portugal.
International Journal of Molecular Sciences
|June 13, 2025
Summary
Rat hair follicle stem cell (rHFSC) exosomes and secretome show promise for wound healing. These cell-free therapies accelerate cutaneous regeneration, offering new avenues in regenerative medicine.
Area of Science:
- Regenerative Medicine
- Tissue Engineering
- Cell Biology
Background:
- Stem cell secretome and exosomes are emerging as cell-free therapeutic options for tissue repair.
- Hair follicle stem cells (HFSCs) possess regenerative potential, but their cell-free applications require further investigation.
Purpose of the Study:
- To isolate and characterize exosomes from rat hair follicle stem cells (rHFSCs).
- To evaluate the wound-healing potential of rHFSC-derived exosomes and secretome.
- To compare the therapeutic relevance of exosomal cargo with parent rHFSCs.
Main Methods:
- Exosome isolation using ultracentrifugation.
- Characterization via RT-PCR, biomarker profiling, SEM, and EDS.
- Functional assays including cytocompatibility (PrestoBlue™) and wound closure (scratch assay).
Main Results:
- rHFSC exosomes and secretome were successfully isolated and characterized.
- Exosomal cargo showed therapeutic relevance compared to parent cells.
- Significant wound closure was observed in treated groups, confirming pro-regenerative effects.
- High cytocompatibility of the therapeutic agents was demonstrated.
Conclusions:
- rHFSC-derived exosomes and secretome represent promising cell-free therapeutic agents for cutaneous regeneration.
- These findings support the application of rHFSC exosomes and secretome in wound healing and regenerative medicine.
- The study advances understanding of exosome and secretome roles in tissue repair.
