Abstract:
:Atopic dermatitis (AD) is a chronic itch and inflammatory disorder of the skin that affects one in ten people. Patients suffering from severe AD eventually progress to develop asthma and allergic rhinitis, in a process known as the "atopic march." Signaling between epithelial cells and innate immune cells via the cytokine thymic stromal lymphopoietin (TSLP) is thought to drive AD and the atopic march. Here, we report that epithelial cells directly communicate to cutaneous sensory neurons via TSLP to promote itch. We identify the ORAI1/NFAT calcium signaling pathway as an essential regulator of TSLP release from keratinocytes, the primary epithelial cells of the skin. TSLP then acts directly on a subset of TRPA1-positive sensory neurons to trigger robust itch behaviors. Our results support a model whereby calcium-dependent TSLP release by keratinocytes activates both primary afferent neurons and immune cells to promote inflammatory responses in the skin and airways.
journal_name
Celljournal_title
Cellauthors
Wilson SR,Thé L,Batia LM,Beattie K,Katibah GE,McClain SP,Pellegrino M,Estandian DM,Bautista DMdoi
10.1016/j.cell.2013.08.057subject
Has Abstractpub_date
2013-10-10 00:00:00pages
285-95issue
2eissn
0092-8674issn
1097-4172pii
S0092-8674(13)01088-Xjournal_volume
155pub_type
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