Modulatory Effects of Echinococcus multilocularis emu-let-7-5p on the Immunological Functions of RAW264.7 Macrophages

文献类型： 外文期刊

第一作者： Jin, Xiaoliang

作者： Jin, Xiaoliang;Li, Yating;Zheng, Yadong;Yang, Xing;Zheng, Yadong

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关键词： Echinococcus multilocularis; emu-let-7-5p; pathogen-host interplay; cytokine; LPS; TLR4 signaling pathway

期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：2.245； ）

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年卷期： 2021 年 8 卷

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收录情况： SCI

摘要： Echinococcus multilocularis is a zoonotic tapeworm with great medical significance. In E. multilocularis-infected mice, parasite-derived let-7-5p (emu-let-7-5p) is present in the sera, but its role remains unclear. Using qPCR, ELISA and flow cytometry, the immunomodulatory effects of emu-let-7-5p were in vitro investigated using RAW264.7 macrophages. Compared with the control, emu-let-7-5p significantly downregulated IL-1 alpha (p < 0.05), but anti-inflammatory cytokine genes remained to be stably expressed in the treated macrophages. Moreover, significantly decreased expression of ripk1 and nf-kB, key components in the LPS/TLR4 signaling pathway, was also observed in the emu-let-7-5p-transfected cells (p < 0.05). Furthermore, CD40 was upregulated in these transfected cells (p < 0.05), while CD86, CD54 and CD80 remained unchanged compared that in the control. These results demonstrate a property of emu-let-7-5p in regulation of immune functions of macrophages, making it be possibly involved in the pathogen-host interplay during E. multilocularis infection.

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