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Formyl peptide receptor 2 (FPR2) antagonism is a potential target for the prevention of Brucella abortus 544 infection
Immunobiology ( IF 2.8 ) Pub Date : 2021-02-23 , DOI: 10.1016/j.imbio.2021.152073
Alisha Wehdnesday Bernard Reyes 1 , Tran Xuan Ngoc Huy 2 , Son Hai Vu 2 , Chang Keun Kang 1 , Wongi Min 1 , Hu Jang Lee 1 , John Hwa Lee 3 , Suk Kim 1
Affiliation  

Here, we explore the potential role of formyl peptide receptor 2 (FPR2) during Brucella abortus infection. FPR2 manipulation affected B. abortus internalization but not its growth within macrophages. During the activation of FPR2 induced by its agonist AGP-8694, a high level of Brucella uptake was accompanied by an increase in ERK phosphorylation, while intracellular survival at 24 h postincubation was observed to be associated with slightly reduced nitrite accumulation but augmented superoxide anion production. Attenuated secretion of IL-6 and IL-10 were observed 48 h postincubation in the bone marrow-derived macrophages (BMDMs) treated with the FPR2 antagonist WRW4. An opposite pattern of bacterial uptake was observed upon treatment with the FPR2 antagonist, but no significant changes in the activation of MAPKs or the production of nitrite or superoxide anion were observed. Interestingly, AGP-8694 treatment of mice did not lead to differences in spleen or liver weight but slightly enhanced bacterial proliferation was observed in the spleen. Although the weights of the spleen or liver did not differ, WRW4 treatment led to reduced bacterial proliferation in the spleen. Furthermore, FPR2 antagonist treatment was associated with high serum levels of the proinflammatory cytokines IL-12, TNF-α, IFN-γ and MCP-1, while the production of TNF-α was inhibited in AGP-8694-treated mice. IL-6 and IL-10 levels were slightly increased in AGP-8694-treated mice at 24 h postinfection. Our findings demonstrated the contribution of FPR2 via manipulating this receptor using its reported agonist AGP-8694 and antagonist WRW4 in both in vitro and in vivo systems. Although activation of the receptor did not consistently induced Brucella infection, FPR2 inhibition may be a promising strategy to treat brucellosis in animals which encourages further investigation.



中文翻译:

甲酰肽受体 2 (FPR2) 拮抗作用是预防流产布鲁氏菌 544 感染的潜在靶点

在这里,我们探讨了甲酰肽受体 2 (FPR2) 在流产布鲁氏菌感染过程中的潜在作用。FPR2 操作影响B. abortus内化,但不影响其在巨噬细胞内的生长。在其激动剂 AGP-8694 诱导的 FPR2 激活过程中,高水平的布鲁氏菌摄取伴随着 ERK 磷酸化的增加,而观察到培养后 24 小时的细胞内存活与亚硝酸盐积累略有减少但超氧阴离子产生增加有关。在用 FPR2 拮抗剂 WRW4 处理的骨髓来源的巨噬细胞 (BMDM) 中孵育 48 小时后,观察到 IL-6 和 IL-10 的分泌减弱。用 FPR2 拮抗剂处理后观察到相反的细菌摄取模式,但未观察到 MAPK 的活化或亚硝酸根或超氧阴离子的产生有显着变化。有趣的是,小鼠的 AGP-8694 治疗不会导致脾脏或肝脏重量的差异,但在脾脏中观察到细菌增殖略有增强。虽然脾脏或肝脏的重量没有差异,WRW4 治疗导致脾脏中的细菌增殖减少。此外,FPR2 拮抗剂治疗与高血清水平的促炎细胞因子 IL-12、TNF-α、IFN-γ 和 MCP-1 相关,而 AGP-8694 治疗的小鼠中 TNF-α 的产生受到抑制。在感染后 24 小时,AGP-8694 处理的小鼠中 IL-6 和 IL-10 水平略有增加。我们的研究结果证明了 FPR2 通过在体外和体内系统中使用其报告的激动剂 AGP-8694 和拮抗剂 WRW4 操纵该受体的作用。尽管受体的激活并没有持续诱导 而在 AGP-8694 处理的小鼠中,TNF-α 的产生受到抑制。在感染后 24 小时,AGP-8694 处理的小鼠中 IL-6 和 IL-10 水平略有增加。我们的研究结果证明了 FPR2 通过在体外和体内系统中使用其报告的激动剂 AGP-8694 和拮抗剂 WRW4 操纵该受体的作用。尽管受体的激活并没有持续诱导 而在 AGP-8694 处理的小鼠中,TNF-α 的产生受到抑制。在感染后 24 小时,AGP-8694 处理的小鼠中 IL-6 和 IL-10 水平略有增加。我们的研究结果证明了 FPR2 通过在体外和体内系统中使用其报告的激动剂 AGP-8694 和拮抗剂 WRW4 操纵该受体的作用。尽管受体的激活并没有持续诱导布鲁氏菌感染,FPR2 抑制可能是治疗动物布鲁氏菌病的有希望的策略,这鼓励进一步研究。

更新日期:2021-02-28
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