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Updated: Jul 5, 2026

Isolation and Culture of Adult Epithelial Stem Cells from Human Skin
Published on: March 31, 2011
[Melanocyte stem cells in adults]
Geneviève Aubin-Houzelstein1, Johanna Djian-Zaouche, Jean-Jacques Panthier
1Unité de Génétique fonctionnelle de la Souris, URA CNRS 2578, Institut Pasteur, 25 rue du Docteur Roux, 75015 Paris cedex, France. ghouzelstein@vet-alfort.fr
Abstract:
Melanocyte stem cells have been recently localized in mice, in the outer root sheath of the lower permanent portion of the hair follicle. Specific depletion of melanocyte stem cell population is responsible for natural hair greying in aging mice and humans. Melanocyte stem cells also seem to drive the growth of malignant melanomas. A few mutations, either spontaneous or genetically engineered, accelerate the natural process of hair greying with age. These mutations allowed the identification of genes and signalling pathways controlling emergence, maintenance and/or differentiation of melanocyte stem cells. This review summarizes recent studies on the melanocyte stem cells and defines a few major unanswered questions in the field.
Insights
Melanocyte stem cells in hair follicles control hair color and aging. Their depletion causes hair greying, and they may drive melanoma growth, offering new research avenues.
Area of Science:
- Cell Biology
- Dermatology
- Genetics
Context:
- Melanocyte stem cells (MSCs) are crucial for hair pigmentation.
- Recent research has localized MSCs to the hair follicle's outer root sheath in mice.
- MSC depletion is linked to age-related hair greying in mice and humans.
Purpose:
- To review recent findings on MSCs.
- To explore the role of MSCs in hair greying and melanoma.
- To identify key unanswered questions in MSC research.
Summary:
- MSCs reside in the hair follicle's outer root sheath and are vital for hair pigmentation.
- The depletion of MSCs leads to hair greying, a process accelerated by specific mutations.
- MSCs are implicated in the development of malignant melanomas.
Impact:
- Understanding MSCs can shed light on the mechanisms of hair aging.
- This research may reveal new therapeutic targets for melanoma.
- Identifying genes and pathways controlling MSCs offers insights into stem cell biology.
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