从Phyllanthus acidus中分离的Pacidusin B触发了HT1080细胞中的铁细胞死亡
Guangyu Zhu1,2, Dian Luo1,2, Yueqin Zhao1,2
1State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
Natural products and bioprospecting
|May 23, 2024
概括
帕奇杜辛B是一种天然化合物,通过诱导氧化和ER压力,触发癌细胞死亡的一种形式ferroptosis. 这一发现为癌症治疗提供了一种新的策略,通过向癌细胞中的铁成来治疗癌症.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 癌细胞经常表现出"铁",使它们易受铁灭诱导剂的影响.
- 铁亡是一种被编程的细胞死亡途径,由依赖铁的脂质过氧化驱动.
研究的目的:
- 为了研究帕奇杜辛B的抗癌作用,这是来自Phyllanthus acidus的三基.
- 确定帕奇杜辛B是否诱导铁亡并阐明其潜在机制.
主要方法:
- 用帕奇杜辛B治疗HT1080人类纤维瘤细胞.
- 铁灭症的形态和生化分析. 铁灭症的标志.
- 研究氧化应激,ER应激和关键信号通路 (PERK-Nrf2-HO-1,GPX4).
- 分子对接研究,以评估与xCT的相互作用.
主要成果:
- 帕奇杜辛B诱导了癌细胞中具有特征的"气球化"表型和铁亡的生化标志物.
- 氧化应激和内质网膜 (ER) 应激都被确定为帕奇杜辛B诱导的铁亡的重要贡献者.
- 激活PERK-Nrf2-HO-1通路导致铁过载,GPX4抑制增加了对帕奇杜辛B的敏感性.
- 分子对接表明pacidusin B与xCT结合,这是已知的ferroptosis诱导物的目标.
结论:
- 帕奇杜辛B有效地诱导人体纤维瘤细胞中的铁亡.
- 该机制涉及ER介导的细胞死亡,氧化应激和铁积累.
- 帕西杜素B显示出作为向铁亡的抗癌剂的潜力.
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