Recruited Monocytes and Type 2 Immunity Promote Lung Regeneration following Pneumonectomy.
Recruited Monocytes and Type 2 Immunity Promote Lung Regeneration following Pneumonectomy.
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DOI:
10.1016/j.stem.2017.03.024
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发表时间:
2017-07-06
期刊:
影响因子:
23.9
通讯作者:
Rock JR
中科院分区:
文献类型:
--
作者:
Lechner AJ;Driver IH;Lee J;Conroy CM;Nagle A;Locksley RM;Rock JR
To investigate the role of immune cells in lung regeneration, we used a unilateral pneumonectomy model that promotes the formation of new alveoli in the remaining lobes. Immunofluorescence and single cell RNA- sequencing found CD115+ and CCR2+ monocytes and M2-like macrophages accumulating in the lung during the peak of type 2 alveolar epithelial stem cell (AEC2) proliferation. Genetic loss of function in mice and adoptive transfer studies revealed that bone marrow-derived macrophages traffic to the lung through a CCL2-CCR2 chemokine axis and are required for optimal lung regeneration, along with Il4ra-expressing leukocytes. Our data suggest that these cells modulate AEC2 proliferation and differentiation. Finally, we provide evidence that group 2 innate lymphoid cells are a source of IL13 that promotes lung regeneration. Together, our data highlight the potential for immunomodulatory therapies to stimulate alveologenesis in adults.
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