卡斯帕斯通过修改c-Jun N-终端激酶来降低和过氧化诱导的IL-8产量
Ryusei Maeyama1, Ryosuke Segawa1, Ryo Onodera1
1Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan.
Toxicology
|December 17, 2023
概括
过敏包括亡. 酶激活降低了炎症反应的调节,特别是在暴露于化的细胞中抑制了JNK介导的IL-8产生. 这揭示了亡.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 皮肤病学 皮肤病学
背景情况:
- (Ni) 是一种常见的 hapten 引起过敏接触性皮肤炎.
- 已知离子可诱导细胞亡和炎症性细胞因子表达,如互乐金-8 (IL-8).
- 细胞亡途径在调节细胞因子生产信号传递中的确切作用尚不清楚.
研究的目的:
- 为了研究酶激活对NiCl2诱导的IL-8产生的影响.
- 阐明参与NiCl2诱导的炎症反应的信号通路.
- 了解亡在调节JNK介导的炎症细胞激活中的作用.
主要方法:
- 使用THP-1细胞进行实验.
- 使用NiCl2,H2O2和TNF-α来诱导细胞反应.
- 使用的泛卡斯巴酶抑制剂Z-VAD-FMK和JNK抑制剂SP600125.5.
- 分析了包括c-Jun酸化,p54 JNK裂变和PARP裂变在内的信号通路.
主要成果:
- 泛酶抑制剂Z-VAD-FMK增强了NiCl2诱导的IL-8产生.
- 此外,Z-VAD-FMK还增强了H2O2诱导的IL-8产生,但没有增强TNF-α诱导的IL-8产生.
- NiCl2和H2O2诱导了c-Jun酸化,p54 JNK和PARP裂变,这些都是由Z-VAD-FMK增强的.
- 抑制JNK逆转了Z-VAD-FMK增强IL-8的产生.
结论:
- 在亡途径内的酶激活活跃下调JNK介导的炎症细胞激活.
- 亡在炎症性疾病中起着重要的调节作用,包括引起的皮肤炎.
- 这项研究阐明了一种新的机制,即亡调节炎症信号传递.
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