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Ex Vivo Human Skin Model to Study Immediate and Early Local Responses to External Stimuli.
Ines Foessl1,2, Thomas Birngruber3, Petra Kotzbeck4,5,6
1COREMED-Centre for Regenerative and Precision Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria. ines.foessl@joanneum.at.
Methods in Molecular Biology (Clifton, N.J.)
|April 10, 2025
Summary
Researchers developed a human ex vivo skin model to study local skin responses. This model allows for the analysis of stimuli like burns and topical treatments, including exosome-like vesicle isolation.
Area of Science:
- Dermatology
- Tissue Engineering
- Biomedical Research
Background:
- In vitro methods are insufficient for simulating complex local skin responses.
- Whole organism models are overly complex for studying localized skin effects.
Purpose of the Study:
- To establish a human ex vivo skin model for studying local skin responses.
- To investigate the effects of stimuli such as burns and topical treatments on skin.
- To develop methods for analyzing biomarkers within dermal interstitial fluid.
Main Methods:
- Development of a human ex vivo skin model.
- Collection of dermal interstitial fluid.
- Enrichment of exosome-like vesicles from dermal interstitial fluid.
- Nanoparticle tracking analysis for vesicle characterization.
Main Results:
- Successfully established a functional human ex vivo skin model.
- Demonstrated the feasibility of collecting dermal interstitial fluid.
- Successfully enriched and characterized exosome-like vesicles from the collected fluid.
Conclusions:
- The human ex vivo skin model provides a viable platform for studying localized skin responses.
- The model facilitates the investigation of stimuli and the analysis of biomarkers like exosome-like vesicles.
- This approach offers a more relevant alternative to traditional in vitro and in vivo methods.

