Abstract:
:Particulate pollution is thought to function as an adjuvant that can induce allergic responses. However, the exact cell types and immunological factors that initiate the lung-specific immune responses are unclear. We found that upon intratracheal instillation, particulates such as aluminum salts and silica killed alveolar macrophages (AMs), which then released interleukin-1α (IL-1α) and caused inducible bronchus-associated lymphoid tissue (iBALT) formation in the lung. IL-1α release continued for up to 2 weeks after particulate exposure, and type-2 allergic immune responses were induced by the inhalation of antigen during IL-1α release and iBALT formation, even long after particulate instillation. Recombinant IL-1α was sufficient to induce iBALTs, which coincided with subsequent immunoglobulin E responses, and IL-1-receptor-deficient mice failed to induce iBALT formation. Therefore, the AM-IL-1α-iBALT axis might be a therapeutic target for particulate-induced allergic inflammation.
journal_name
Immunityjournal_title
Immunityauthors
Kuroda E,Ozasa K,Temizoz B,Ohata K,Koo CX,Kanuma T,Kusakabe T,Kobari S,Horie M,Morimoto Y,Nakajima S,Kabashima K,Ziegler SF,Iwakura Y,Ise W,Kurosaki T,Nagatake T,Kunisawa J,Takemura N,Uematsu S,Hayashi M,Aoshi Tdoi
10.1016/j.immuni.2016.11.010subject
Has Abstractpub_date
2016-12-20 00:00:00pages
1299-1310issue
6eissn
1074-7613issn
1097-4180pii
S1074-7613(16)30482-4journal_volume
45pub_type
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