当前位置: X-MOL 学术Toxicol. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Fumonisin B1 triggers the formation of bovine neutrophil extracellular traps
Toxicology Letters ( IF 2.9 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.toxlet.2020.07.006
Jingjing Wang 1 , Ziyi Liu 1 , Zhen Han 1 , Zhengkai Wei 2 , Yong Zhang 1 , Kai Wang 2 , Zhengtao Yang 2
Affiliation  

Fumonisin B1 (FB1) is a congener of fumonisins produced by Fusarium species that may be found as corn contaminants threatening health of humans and animals. FB1 causes a variety of toxicity effects, including hepatotoxic, nephrotoxic and cytotoxic effects. However, detailed mechanisms associated with FB1 immunotoxicity in neutrophils are still unclear. To accomplish this, we utilized neutrophils to study the mechanisms of FB1 immunotoxicity. In the current study, we found that FB1 induced the formation of neutrophil extracellular traps (NETs), increased reactive oxygen species (ROS) levels, and decreased SOD and CAT activities. Concurrently, FB1 treatment led to the concentration- dependent phosphorylation of ERK-1/2 and p38 in neutrophils. Moreover, we demonstrated that FB1-induced NET formation was dependent of NADPH oxidase activity. Pretreatment of neutrophils with DPI, U0126 and SB202190 significantly reduced ROS generation, and prevented NET formation, further suggesting that ROS dependent activation of ERK 1/2 and p38 pathways, which possibly mediate FB1-induced NET release in neutrophils. Thus, NET formation and ROS production could be attributed to FB1 immunotoxicity, which might enrich the toxicological mechanisms of FB1.

中文翻译:

伏马菌素 B1 触发牛中性粒细胞胞外陷阱的形成

伏马菌素 B1 (FB1) 是由镰刀菌属物种产生的伏马菌素同系物,可能被发现是威胁人类和动物健康的玉米污染物。FB1 引起多种毒性作用,包括肝毒性、肾毒性和细胞毒性作用。然而,与中性粒细胞中 FB1 免疫毒性相关的详细机制仍不清楚。为了实现这一点,我们利用中性粒细胞来研究 FB1 免疫毒性的机制。在目前的研究中,我们发现 FB1 诱导中性粒细胞胞外陷阱 (NETs) 的形成,增加活性氧 (ROS) 水平,并降低 SOD 和 CAT 活性。同时,FB1 处理导致中性粒细胞中 ERK-1/2 和 p38 的浓度依赖性磷酸化。此外,我们证明 FB1 诱导的 NET 形成依赖于 NADPH 氧化酶活性。用 DPI、U0126 和 SB202190 预处理中性粒细胞显着减少了 ROS 的产生,并阻止了 NET 的形成,进一步表明 ERK 1/2 和 p38 通路的 ROS 依赖性激活,这可能介导了 FB1 诱导的中性粒细胞 NET 释放。因此,NET 的形成和 ROS 的产生可归因于 FB1 的免疫毒性,这可能丰富了 FB1 的毒理学机制。
更新日期:2020-10-01
down
wechat
bug