3,6-epidioxy-1,10-bisaboladiene通过脂质过氧化诱导类似铁亡的细胞死亡
Narandulam Usukhbayar1, Yukie Takano2, Shota Uesugi1,3
1The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Japan.
Free radical research
|June 22, 2023
概括
3,6-epidioxy-1,10-bisaboladiene (EDBD) 是一种植物化合物,在HL-60细胞中触发铁死样细胞死亡. 这种依赖铁的过程涉及脂质过氧化和细胞膜损伤,与亡或亡不同.
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:
- 3,6-epidioxy-1,10-bisaboladiene (EDBD) 是一种从*Cacalia delphiniifolia*中分离出来的甲烯内氧化物.
- 之前的研究表明,EDBD通过HL-60细胞的酶激活诱导部分亡,但主要是死细胞形态.
研究的目的:
- 阐明HL-60细胞中EDBD诱导的死细胞死亡背后的机制.
- 研究铁,脂质过氧化和特定细胞死亡途径在EDBD作用中的作用.
主要方法:
- 用EDBD治疗HL-60细胞,并评估细胞死亡机制.
- 评估了铁离子依赖性,卡斯巴酶和亡抑制剂 (z-VAD-fmk,necrostatin-1) 和氧化应激抑制剂 (IM-54) 的作用.
- 评估了脂质过氧化,谷氨 (GSH) 水平和谷氨过氧化酶4 (GPX4) 表达.
主要成果:
- EDBD诱导的细胞死亡依赖于铁离子,并模仿过氧化诱导的亡.
- 细胞死亡被IM-54抑制,但不是z-VAD-fmk或necrostatin-1,这表明它不是细胞亡或亡.
- 治疗EDBD导致了时间和剂量依赖的脂质过氧化,由费罗斯塔丁-1和α-托科菲罗尔抑制.
- EDBD降低了GPX4和降低了GSH水平,表明细胞抗氧化防御的破坏.
结论:
- 在HL-60细胞中,EDBD会诱导铁离子依赖的铁样细胞死亡.
- 该机制涉及显著的脂质过氧化和GPX4的下调.
- 这些发现凸显了EDBD在诱导特定形式的氧化细胞死亡方面的潜在作用.
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