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首页> 外文期刊>International immunopharmacology >Rapamycin ameliorates lipopolysaccharide-induced acute lung injury by inhibiting IL-1 beta and IL-18 production
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Rapamycin ameliorates lipopolysaccharide-induced acute lung injury by inhibiting IL-1 beta and IL-18 production

机译:雷帕霉素通过抑制IL-1β和IL-18生产来改善脂多糖诱导的急性肺损伤

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摘要

Interleukin (IL)-1 beta and IL-18 play central and detrimental roles in the development of acute lung injury (ALI), and mammalian target of rapamycin (mTOR) is involved in regulating IL-1 beta and IL-18 production. However, it is not clear whether the mTOR specific inhibitor rapamycin can attenuate lipopolysaccharide (LPS)-induced ALI by modulating IL-1 beta and IL-18 production. In this study, we found that rapamycin ameliorated LPS-induced ALI by inhibiting NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome-mediated IL-1 beta and IL-18 secretion. Mechanistically, elevated autophagy and decreased nuclear factor (NF)-kappa B activation were associated with downregulated IL-1 beta and IL-18. Moreover, rapamycin reduced leukocyte infiltration in the lung tissue and bronchoalveolar lavage fluid (BALF), and contributed to the alleviation of LPS-induced ALI. Consistently, rapamycin also significantly inhibited IL-1 beta and IL-18 production by RAW264.7 cells via increased autophagy and decreased NF-kappa B signaling in vitro. Our results demonstrated that rapamycin protects mice against LPS-induced ALI partly by inhibiting the production and secretion of IL-1 beta and IL-18. mTOR and rapamycin might represent an appropriate therapeutic target and strategy for preventing ALI induced by LPS.
机译:白细胞介素(IL)-1β和IL-18在急性肺损伤(ALI)的发育中起系中和不利的作用,哺乳动物催乳素靶(MTOR)涉及调节IL-1β和IL-18生产。然而,目前尚不清楚MTOR特异性抑制剂雷帕霉素是否可以通过调节IL-1β和IL-18生产来衰减脂多糖(LPS)诱导的ALI。在这项研究中,我们发现通过抑制含有3(NLRP3)炎症介导的IL-1β和IL-18分泌的NOD样受体家族吡林结构域来改善LPS诱导的ALI。机械地,升高的自噬和核因子(NF)-Kappa B激活与下调的IL-1β和IL-18有关。此外,雷帕霉素降低了肺组织和支气管肺泡灌洗液(BALF)的白细胞浸润,并有助于减轻LPS诱导的ALI。始终如一地,雷帕霉素还通过在体外增加的自噬和NF-Kappa B信号增加,通过Raw264.7细胞显着抑制IL-1β和IL-18产生。我们的研究结果表明,通过抑制IL-1β和IL-18的生产和分泌,雷帕霉素部分保护小鼠免受LPS诱导的ALI。 MTOR和雷帕霉素可能代表适当的治疗目标和预防LPS诱导的ALI的策略。

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