Decision Letter: Involvement of ILC1-Like Innate Lymphocytes in Human Autoimmunity, Lessons from Alopecia Areata
September 2022
New to Alopecia Areata? There is a guide in the encyclopedia. Read the guide → Studysummary This study found that innate lymphoid cells-type 1 (ILC1lc) can induce alopecia areata (AA) by disrupting hair follicle immune privilege and causing hair follicle dystrophy and regression in both ex vivo and in vivo settings. Our plain-language summary of this paper — not a Tressless recommendation.
The study explores the involvement of ILC1-like innate lymphocytes in alopecia areata (AA), identifying a novel population of NKG2D+ ILC1-like cells around hair follicles that secrete IFN-γ, leading to hair follicle immune privilege loss and hair fiber dystrophy. These cells are distinct from NK cells, as shown by FACS analysis using markers like CD200R, CD127, and CXCR6. The research challenges the view that AA is solely driven by CD8+ T cells and suggests ILC1-like cells as potential therapeutic targets. Despite limitations such as budget constraints preventing single-cell RNA sequencing, the study provides significant insights into AA's molecular biology and highlights the need for further research to confirm the specific lineage of these cells.
