Data di Pubblicazione:
2017
Citazione:
A mast cell-ILC2-Th9 pathway promotes lung inflammation in cystic fibrosis / S. Moretti, G. Renga, V. Oikonomou, C. Galosi, M. Pariano, R.G. Iannitti, M. Borghi, M. Puccetti, M. De Zuani, C.E. Pucillo, G. Paolicelli, T. Zelante, J.-. Renauld, O. Bereshchenko, P. Sportoletti, V. Lucidi, M.C. Russo, C. Colombo, E. Fiscarelli, C. Lass-Florl, F. Majo, G. Ricciotti, H. Ellemunter, L. Ratclif, V.N. Talesa, V. Napolioni, L. Romani. - In: NATURE COMMUNICATIONS. - ISSN 2041-1723. - 8(2017 Jan 16). [10.1038/ncomms14017]
Abstract:
T helper 9 (Th9) cells contribute to lung inflammation and allergy as sources of interleukin-9
(IL-9). However, the mechanisms by which IL-9/Th9 mediate immunopathology in the lung
are unknown. Here we report an IL-9-driven positive feedback loop that reinforces allergic
inflammation. We show that IL-9 increases IL-2 production by mast cells, which leads to
expansion of CD25þ type 2 innate lymphoid cells (ILC2) and subsequent activation of Th9
cells. Blocking IL-9 or inhibiting CD117 (c-Kit) signalling counteracts the pathogenic effect of
the described IL-9-mast cell-IL-2 signalling axis. Overproduction of IL-9 is observed in
expectorates from cystic fibrosis (CF) patients, and a sex-specific variant of IL-9 is predictive
of allergic reactions in female patients. Our results suggest that blocking IL-9 may be a
therapeutic strategy to ameliorate inflammation associated with microbial colonization in the
lung, and offers a plausible explanation for gender differences in clinical outcomes of patients
with CF.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
S. Moretti, G. Renga, V. Oikonomou, C. Galosi, M. Pariano, R.G. Iannitti, M. Borghi, M. Puccetti, M. De Zuani, C.E. Pucillo, G. Paolicelli, T. Zelante, J.-. Renauld, O. Bereshchenko, P. Sportoletti, V. Lucidi, M.C. Russo, C. Colombo, E. Fiscarelli, C. Lass-Florl, F. Majo, G. Ricciotti, H. Ellemunter, L. Ratclif, V.N. Talesa, V. Napolioni, L. Romani
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