TNF-ɑ诱导线粒体功能障碍以驱动MCF-7细胞中的NLRP3/Caspase-1/GSDMD介导的烧灭细胞
Kexin Gao1, Yancui Liu1, Cheng Sun1
1Department of Anatomy, Mudanjiang Medical University, Mudanjiang City, 157000, Heilongjiang, China.
Scientific reports
|October 29, 2024
概括
瘤亡因子-α (TNF-ɑ) 在乳腺癌细胞中诱导激素灭绝,即被编程的细胞死亡. 这种涉及活性氧物种 (ROS) 的机制为乳腺癌治疗提供了新的治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- 烧死是一种被编程细胞死亡 (PCD) 途径.
- 瘤亡因子-α (TNF-ɑ) 是一种具有潜在抗瘤作用的炎症性细胞因子.
- 对于TNF-ɑ在乳腺癌中诱导热的作用尚不清楚.
研究的目的:
- 为了研究TNF-ɑ对乳腺癌细胞中热致死的作用.
- 阐明TNF-ɑ诱导的热的潜在分子机制.
- 探索TNF-ɑ在乳腺癌治疗中的治疗潜力.
主要方法:
- 用TNF-ɑ治疗MCF-7乳腺癌细胞.
- 观察到细胞死亡形态.
- 评估了线粒体功能障碍,包括膜潜力和ROS产生.
- 分析了NLRP3/Caspase-1/GSDMD通路的激活情况.
- 抑制反应性氧物种 (ROS) 的产生,以评估其作用.
主要成果:
- 在MCF-7细胞中,TNF-ɑ诱导的细胞死亡,并具有烧灭的形态征兆.
- 治疗TNF-ɑ导致线粒体功能障碍,其特征是线粒体膜潜能降低和ROS产量增加.
- 抑制ROS的产生减弱了TNF-ɑ诱导的热灭菌路径激活,并降低了TNF-ɑ的抗增殖作用.
- kanonical pyroptosis 途径 (NLRP3/Caspase-1/GSDMD) 参与了 TNF-ɑ 的抗瘤作用.
结论:
- TNF-ɑ通过诱导热致死,对乳腺癌细胞产生抗瘤作用.
- 这个过程是由ROS/NLRP3/Caspase-1/GSDMD路径介导的.
- 线粒体功能障碍和ROS产生在TNF-α诱导的热中至关重要.
- 这些发现表明乳腺癌治疗的新疗法策略.
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