人类巨细胞中铁亡的调节通过氧化捐赠体
I I Vlasova1, M D Yurkanova2, A A Zolotopup2
1Leading Researcher, Department of Modern Biomaterials; I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2 Trubetskaya St., Moscow, 119991, Russia.
Sovremennye tekhnologii v meditsine
|July 17, 2025
概括
长效的氧化 (NO) 捐赠者,如DTPA,可以抑制巨细胞中的铁亡. 这一发现表明了调节免疫细胞中编程细胞死亡的潜在治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 铁亡是一种被编程的细胞死亡途径,其特征是依赖铁的脂质过氧化.
- 巨细胞在亲氧化环境中运作,使它们易受铁亡,需要对其调节进行研究.
研究的目的:
- 为了研究THP-1衍生巨细胞中的铁.
- 为了比较不同半衰期的NO供体在调节铁灭的疗效.
主要方法:
- 在THP-1巨细胞中使用GPX4抑制剂 (RSL3,ML-162) 和埃拉斯诱导了费洛.
- 通过Alamar蓝色减少,LDH释放和LIVE/DEAD测试来监测细胞死亡的进展.
- 使用BODIPY 581/591 C11探针评估了脂质过氧化;铁素-1证实了铁亡.
主要成果:
- GPX4抑制剂剂量依赖性诱导铁亡,这个过程需要大约5小时才能开始.
- 埃拉斯的诱导作用较弱,但增强了GPX4抑制剂诱导的铁亡.
- DEA NONOate (2分半衰期) 没有影响,而DTPA NONOate (3小时半衰期) 完全抑制了铁.
结论:
- 作为长期作用的NO捐赠体,DTPA有效地抑制了THP-1巨细胞中的铁化.
- 对NO的作用延长机制进行进一步的研究是需要在调节细胞铁亡的治疗应用.
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