Cordyceps militaris Solid Medium Extract Alleviates Lipoteichoic Acid-Induced MH-S Inflammation by Inhibiting TLR2/NF-κB/NLRP3 Pathways

文献类型： 外文期刊

第一作者： Wang, Xiaoya

作者： Wang, Xiaoya;Peng, Zhiping;Wang, Lei;Zhang, Jingyan;Zhang, Kang;Guo, Zhiting;Xu, Guowei;Li, Jianxi

作者机构：

关键词： Cordyceps militaris solid medium; LTA; MH-S; inflammation

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN： 1661-6596

年卷期： 2023 年 24 卷 21 期

页码：

收录情况： SCI

摘要： The aim of this study was to investigate the inhibitory effects of Cordyceps militaris solid medium extract (CME) and cordycepin (COR) on LTA-induced inflammation in MH-S cells and their mechanisms of action. In this study, the establishment of an LTA-induced MH-S inflammation model was determined, the CCK-8 method was used to determine the safe concentration range for a drug for COR and CME, the optimal concentration of COR and CME to exert anti-inflammatory effects was further selected, and the expression of inflammatory factors of TNF-alpha, IL-1 beta, IL-18, and IL-6 was detected using ELISA. The relative expression of TNF-alpha, IL-1 beta, IL-18, IL-6, IL-10, TLR2 and MyD88 mRNA was detected using RT-PCR, and the IL-1 beta, IL-18, TLR2, MyD88, NF-kappa B p-p65, NLRP3, pro-caspase-1, Caspase-1 and ASC protein expression in the cells were detected using Western blot; immunofluorescence assay detected the expression of Caspase-1 in MH-S cells. The results revealed that both CME and COR inhibited the levels of IL-1 beta, IL-18, IL-6, and TNF-alpha in the supernatants of LTA-induced MH-S cells and the mRNA expression levels of IL-1 beta, IL-18, IL-6, TNF-alpha, TLR2 and MyD88, down-regulated the LTA-induced IL-1 beta, IL-18, TLR2 in MH-S cells, MyD88, NF-kappa B p-p65/p65, NLRP3, ASC, pro-caspase-1, and caspase-1 protein expression levels, and inhibited LTA-induced caspase-1 activation in MH-S cells. In conclusion, CME can play a therapeutic role in LTA-induced inflammation in MH-S cells via TLR2/NF-kappa B/NLRP3, and may serve as a potential drug for bacterial pneumonia caused by Gram-positive bacteria.

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