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Updated: Jun 20, 2026
10:09
Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration
Published on: February 28, 2013
Sphingomonas olei Extracellular Vesicles Promote Hair-Growth Responses Linked to Wnt/β-Catenin Signalling
Eunyoung Seo1, Minji Park1, Chaeeun Lee1
1CutisBio Co., Ltd, Seoul, Republic of Korea.
Experimental Dermatology
|June 19, 2026
Summary
Bacterial extracellular vesicles (SoEVs) from skin microbes promote hair growth by stimulating dermal papilla cells. These SoEVs activate Wnt/β-catenin signaling, suggesting a new therapeutic avenue for hair loss.
Area of Science:
- Microbiology
- Dermatology
- Cell Biology
Background:
- Hair loss is a prevalent condition with few effective treatments.
- Bacterial extracellular vesicles are emerging as key mediators in skin biology.
- Sphingomonas olei is a bacterium found on healthy human skin.
Purpose of the Study:
- To investigate the effect of Sphingomonas olei extracellular vesicles (SoEVs) on human hair growth.
- To determine if SoEVs influence Wnt/β-catenin signaling pathways.
- To assess the potential of SoEVs as a therapeutic agent for hair loss.
Main Methods:
- SoEVs were isolated from Sphingomonas olei.
- Human dermal papilla (DP) cells were treated with SoEVs.
- Wnt/β-catenin signaling pathway activation was assessed via molecular markers.
- Ex vivo human hair follicles were cultured and treated with SoEVs.
Main Results:
- SoEVs were non-cytotoxic to DP cells.
- SoEVs upregulated hair growth factors IGF1 and VEGFA in DP cells.
- SoEV treatment increased Wnt/β-catenin signaling components (β-catenin, LEF1, AXIN2).
- SoEVs promoted hair shaft elongation and increased proliferation markers in ex vivo hair follicles.
Conclusions:
- SoEVs show potential to support human hair growth.
- The hair growth-promoting effects of SoEVs are linked to Wnt/β-catenin signaling.
- Further in vivo and mechanistic studies are warranted to explore SoEVs for hair loss treatment.
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