Regulatory γδ T Cells Protect Human Scalp Hair Follicles From Alopecia Areata In Vivo
November 2023
in “
Journal of Investigative Dermatology
”
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Studysummary This study found that γδTregs significantly reduced autoimmune effects in humanized alopecia areata models, suggesting their potential as a novel cell-based therapeutic approach for managing the condition. Our plain-language summary of this paper — not a Tressless recommendation.
The study investigates the role of Foxp3+ γδ regulatory T cells (γδTregs) in protecting human scalp hair follicles from alopecia areata (AA). Researchers found that γδTregs are increased in AA lesions and can prevent AA when injected into humanized AA mouse models. These cells reduced the characteristic perifollicular infiltrate and restored hair follicle immune privilege, leading to hair regrowth. In vitro, γδTregs decreased the expression of AA-associated danger signals and increased the proliferation of hair matrix keratinocytes. The findings suggest that γδTregs are crucial in protecting against AA and could be a potential cell-based therapeutic option for managing the condition.
