Lung epithelial cell-derived IL-25 negatively regulates LPS-induced exosome release from macrophages.
Lung epithelial cell-derived IL-25 negatively regulates LPS-induced exosome release from macrophages.
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肺上皮细胞来源的 IL-25 负向调节 LPS 诱导的巨噬细胞外泌体释放
DOI:
10.1186/s40779-018-0173-6
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发表时间:
2018-07-30
影响因子:
21.1
通讯作者:
Fan J
中科院分区:
文献类型:
--
作者:
Li ZG;Scott MJ;Brzóska T;Sundd P;Li YH;Billiar TR;Wilson MA;Wang P;Fan J
Acute lung injury (ALI) is a major component of multiple organ dysfunction syndrome (MODS) following pulmonary and systemic infection. Alveolar macrophages (AMϕ) are at the center of ALI pathogenesis. Emerging evidence has shown that cell-cell interactions in the lungs play an important regulatory role in the development of acute lung inflammation. However, the underneath mechanisms remain poorly addressed. In this study, we explore a novel function of lung epithelial cells (LEPCs) in regulating the release of exosomes from AMϕ following LPS stimulation. For the in vivo experiments, C57BL/6 wildtype (WT) mice were treated with lipopolysaccharide (LPS) (2 mg/kg B.W.) in 0.2 ml of saline via intratracheal aerosol administration. Bronchoalveolar lavage fluid was collected at 0–24 h after LPS treatment, and exosomes derived from AMϕ were measured. For the in vitro studies, LEPCs and bone marrow-derived Mϕ (BMDM) were isolated from WT or TLR4−/− mice and were then cocultured in the Transwell™ system. After coculture for 0–24 h, the BMDM and supernatant were harvested for the measurement of exosomes and cytokines. We demonstrate that LPS induces macrophages (Mϕ) to release exosomes, which are then internalized by neighboring Mϕ to promote TNF-α expression. The secreted interleukin (IL)-25 from LEPCs downregulates Rab27a and Rab27b expression in Mϕ, resulting in suppressed exosome release and thereby attenuating exosome-induced TNF-α expression and secretion. These findings reveal a previously unidentified crosstalk pathway between LEPCs and Mϕ that negatively regulates the inflammatory responses of Mϕ to LPS. Modulating IL-25 signaling and targeting exosome release may present a new therapeutic strategy for the treatment of ALI.
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DOI:
10.4049/jimmunol.1700216
发表时间:
2017-08-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Han M;Rajput C;Hong JY;Lei J;Hinde JL;Wu Q;Bentley JK;Hershenson MB
通讯作者:
Hershenson MB
DOI:
10.4049/jimmunol.1400899
发表时间:
2014-11-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Wen Z;Fan L;Li Y;Zou Z;Scott MJ;Xiao G;Li S;Billiar TR;Wilson MA;Shi X;Fan J
通讯作者:
Fan J
影响因子:
4.5
作者:
Savina, A;Fader, CM;Colombo, MI
通讯作者:
Colombo, MI
影响因子:
5.5
作者:
Jiao, Yang;Li, Zhigang;Fan, Jie
通讯作者:
Fan, Jie
影响因子:
82.9
作者:
Fan, J;Malik, AB
通讯作者:
Malik, AB