Abstract

ILC3-derived acetylcholine promotes protease-driven allergic lung pathology

Highlights

  • Leffler J, Read JF, Jones AC, Mok D, Hollams EM, Laing IA, et al Progressive increase of FcepsilonRI expression across several PBMC subsets is associated with atopy and atopic asthma within school-aged children

  • We have identified association of ILC3s with protease-induced lung pathology following acute papain challenge of wild-type (WT) C57BL/6 mice

  • Lin–CD451CD1271ICOS1 ILC2s), we identified an increase in the choline acetyltransferase (ChAT)-expressing ILC3-enriched

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Summary

Airway resistance

CD451CD3–Lin– cells did show IL-17 production following phorbol myristate acetate restimulation. Airway cellular infiltration and detection of pulmonary IL-13 and IL-17A by ELISA is shown. Airway resistance to methacholine challenge following papain challenge in Rorc–/– mice. Detection of pulmonary IL-13 and IL-17A by ELISA in papain-challenged Rorc–/– mice. Detection of ILC2s (Lin–CD451CD1271ICOS1) and NCR1 ILC3s (Lin–CD451CD1271ICOS–NKp461) in the lung by flow cytometry. As expected, detection of ILC3 subsets such as NCR1 ILC3s (Lin–CD451CD1271ICOS–NKp461) in Rorc–/–. This body of work identifies a previously unappreciated, T-cell–independent role for

Papain ChATfl
Supported by research funding from the Biotechnology and Biological Sciences
Mice used and animal procedures
Flow cytometry
Determination of bronchial hyperresponsiveness
Findings
Statistical analysis

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