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A transcriptomic map of murine and human alopecia areata
Journal article   Open access   Peer reviewed

A transcriptomic map of murine and human alopecia areata

Nicholas Borcherding, Sydney B. Crotts, Luana S. Ortolan, Nicholas Henderson, Nicholas L. Bormann and Ali Jabbari
JCI insight, Vol.5(13), e137424
07/09/2020
DOI: 10.1172/jci.insight.137424
PMCID: PMC7406251
PMID: 32453712
url
https://doi.org/10.1172/jci.insight.137424View
Published (Version of record) Open Access

Abstract

Alopecia areata (AA) is a common autoimmune condition, presenting initially with loss of hair without other overt skin changes. The unremarkable appearance of the skin surface contrasts with the complex immune activity occurring at the hair follicle. AA pathogenesis is due to the loss of immune privilege of the hair follicle, leading to autoimmune attack. Although the literature has focused on CD8(+) T cells, vital roles for CD4(+) T cells and antigen-presenting cells have been suggested. Here, we use single-cell sequencing to reveal distinct expression profiles of immune cells in murine AA. We found clonal expansions of both CD4(+) and CD8(+) T cells, with shared clonotypes across varied transcriptional states. The murine AA data were used to generate highly predictive models of human AA disease. Finally, single-cell sequencing of T cells in human AA recapitulated the clonotypic findings and the gene expression of the predictive models.
Life Sciences & Biomedicine Medicine, Research & Experimental Research & Experimental Medicine Science & Technology

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