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Inflammatory triggers associated with exacerbations of COPD orchestrate plasticity of group 2 innate lymphoid cells in the lungs
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Inflammatory triggers associated with exacerbations of COPD orchestrate plasticity of group 2 innate lymphoid cells in the lungs
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Journal Article
Inflammatory triggers associated with exacerbations of COPD orchestrate plasticity of group 2 innate lymphoid cells in the lungs
2016
Overview
Group 1 and 3 innate lymphoid cells can be functionally plastic. Humbles and colleagues find that group 2 innate lymphoid cells in the lungs also exhibit phenotypic plasticity after exposure to infectious or noxious agents.
Innate lymphoid cells (ILCs) are critical mediators of mucosal immunity, and group 1 ILCs (ILC1 cells) and group 3 ILCs (ILC3 cells) have been shown to be functionally plastic. Here we found that group 2 ILCs (ILC2 cells) also exhibited phenotypic plasticity in response to infectious or noxious agents, characterized by substantially lower expression of the transcription factor GATA-3 and a concomitant switch to being ILC1 cells that produced interferon-γ (IFN-γ). Interleukin 12 (IL-12) and IL-18 regulated this conversion, and during viral infection, ILC2 cells clustered within inflamed areas and acquired an ILC1-like phenotype. Mechanistically, these ILC1 cells augmented virus-induced inflammation in a manner dependent on the transcription factor T-bet. Notably, IL-12 converted human ILC2 cells into ILC1 cells, and the frequency of ILC1 cells in patients with chronic obstructive pulmonary disease (COPD) correlated with disease severity and susceptibility to exacerbations. Thus, functional plasticity of ILC2 cells exacerbates anti-viral immunity, which may have adverse consequences in respiratory diseases such as COPD.
Publisher
Nature Publishing Group US,Nature Publishing Group
Subject
/ 13/51
/ 14/32
/ Aged
/ Animals
/ Cell Plasticity - immunology
/ Chronic obstructive pulmonary disease
/ Female
/ GATA3 Transcription Factor - genetics
/ GATA3 Transcription Factor - metabolism
/ Haemophilus Infections - immunology
/ Haemophilus influenzae - immunology
/ Humans
/ Immunologi inom det medicinska området (Här ingår: Cell- och immunterapi)
/ Immunology in the Medical Area (including Cell and Immunotherapy)
/ Inflammation Mediators - metabolism
/ Influenza A virus - immunology
/ Male
/ Medicinska och farmaceutiska grundvetenskaper
/ Mice
/ Orthomyxoviridae Infections - immunology
/ Pulmonary Disease, Chronic Obstructive - immunology
/ Staphylococcal Infections - immunology
/ Staphylococcus aureus - immunology
/ T-Box Domain Proteins - genetics
