In situ neutrophil efferocytosis shapes T cell immunity to influenza infection.
In situ neutrophil efferocytosis shapes T cell immunity to influenza infection.
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DOI:
10.1038/s41590-020-0746-x
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发表时间:
2020-09
影响因子:
30.5
通讯作者:
Kim M
中科院分区:
文献类型:
--
作者:
Lim K;Kim TH;Trzeciak A;Amitrano AM;Reilly EC;Prizant H;Fowell DJ;Topham DJ;Kim M
Early recruitment of neutrophils from the blood to sites of tissue infection is a hallmark of innate immune responses. However, little is known about the mechanisms by which apoptotic neutrophils are cleared in infected tissues during resolution and the immunological consequences of in situ efferocytosis. Using intravital multi-photon microscopy (IV-MPM), we show previously unrecognized motility patterns of interactions between neutrophils and tissue-resident phagocytes within the influenza-infected mouse airway. Newly infiltrated inflammatory monocytes become a major pool of phagocytes and play a key role in the clearance of highly motile apoptotic neutrophils during the resolution phase. Apoptotic neutrophils further release epidermal growth factor (EGF) and promote the differentiation of monocytes into tissue-resident antigen-presenting cells (APCs) for activation of anti-viral T cell effector functions. Collectively, these results suggest that the presence of in situ neutrophil resolution at the infected tissue is critical for optimal CD8+ T cell–mediated immune protection.
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发表时间:
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The Journal of experimental medicine
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