暂时受体潜在的安基林1 (TRPA1) 通道介导人类肺癌细胞中阿克罗林细胞毒性
Akihiko Sakamoto1, Yusuke Terui1, Kazuei Igarashi2
1Faculty of Pharmacy, Chiba Institute of Science, Choshi 288-0025, Japan.
International journal of molecular sciences
|July 29, 2023
概括
烟雾中的有毒化合物阿克罗莱因增加了肺癌细胞中TRPA1通道的表达. 这种增强的TRPA1表达促进了阿克罗莱因的产生.
科学领域:
- 细胞生物学 细胞生物学
- 毒理学 毒理学 毒理学
- 分子生物学分子生物学
背景情况:
- 暂时受体潜在氨酸1 (TRPA1) 是一个关键的离子通道,参与疼痛和热感应.
- 香烟烟雾提取物含有有毒的阿克罗莱因,已知可诱导TRPA1的表达.
- TRPA1在阿克罗莱因诱导的细胞毒性中的确切作用仍需要阐明.
研究的目的:
- 研究TRPA1通道对人类肺癌A549细胞中阿克罗莱因细胞毒性的参与.
- 确定阿克罗莱因对TRPA1表达及其基础转录调节的影响.
- 评估TRPA1调制对细胞对阿克罗莱因敏感性的影响.
主要方法:
- 人类肺癌A549细胞被用不同度和持续时间的阿克罗莱因治疗.
- 使用定量方法分析了TRPA1表达水平.
- 评估了转录因子AP-1,NF-κB和HIF-1α的激活.
- 在TRPA1过度表达或淘汰后,测量了细胞灵敏度和蛋白质结合烯蛋白水平.
- 采用TRPA1抗剂治疗来评估其对阿克罗莱因耐受性的影响.
主要成果:
- 阿克罗莱因在A549细胞中表现出度和时间依赖的细胞毒性 (IC50 = 25μM).
- 阿克罗林治疗上调TRPA1表达,与转录因子AP-1,NF-κB和HIF-1α的激活相关.
- 过度表达TRPA1增强了阿克罗莱因敏感性和蛋白质结合的阿克罗莱因形成.
- TRPA1的敲除或对抗性使得对阿克罗莱因的细胞毒性作用产生耐受性.
结论:
- 阿克罗莱因诱导肺癌细胞中的TRPA1表达,可能通过激活转录因子AP-1,NF-κB和HIF-1α.
- 增加TRPA1的表达加剧了阿克罗林诱导的细胞毒性.
- TRPA1在调解细胞对亚克罗莱因暴露的反应方面发挥着重要作用.
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