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在使用原始264.7巨细胞的亲炎性反应模型中,百氧素6的保护作用
Svetlana B Parfenyuk1, Olga V Glushkova2, Mars G Sharapov2
1Institute of Cell Biophysics, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia. lana_kras2@rambler.ru.
Biochemistry. Biokhimiia
|September 27, 2023
概括
过氧化素6 (PRDX6) 在暴露于内毒素的巨细胞中显著降低了促炎反应,包括TNF-α和IL-1β. 这种抗氧化蛋白还减少了活性氧物种和保护细胞免受亡.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 巨细胞的亲炎性反应对先天免疫非常重要.
- 暴露于内毒素会引发显著的炎症级联.
- 氧化素6 (PRDX6) 是一种具有潜在免疫调节作用的抗氧化蛋白.
研究的目的:
- 为了研究复合抗氧化蛋白PRDX6对RAW 264.7巨细胞对内毒素的炎症反应的影响.
- 确定PRDX6对细胞因子产生,活性氧物种 (ROS) 和亡的影响.
主要方法:
- RAW 264.7巨被暴露在具有或没有PRDX6.6的脂多糖 (LPS) 中.
- 量化促炎性细胞因子 (TNF-α,IL-1β) 和ROS的产生.
- 对iNos,Nrf-2,NF-κB,SAPK/JNK和P53的基因表达的分析.
- 对亡标记物的评估.
主要成果:
- PRDX6显著降低了TNF-α的产生15-20%,并使IL-1β水平正常化.
- PRDX6降低了LPS诱导的ROS产生和iNos基因过度表达.
- 在早期阶段,PRDX6抑制了Nrf-2基因表达和NRF-2转录因子的产生.
- PRDX6抑制了NF-κB和SAPK/JNK信号通路的激活.
- PRDX6抑制了P53基因表达,这表明亡减少.
结论:
- 再组合PRDX6对由内毒素刺激的巨细胞表现出强大的抗炎作用.
- PRDX6可以减轻关键的炎症媒介,ROS产量和亡.
- PRDX6证明了对内毒素诱导的细胞损伤和炎症的保护作用.
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