通过DDI2激活NFE2L1-ubiquitin-proteasome系统,可以防止ferroptosis发生
Anahita Ofoghi1, Stefan Kotschi1, Imke L Lemmer1,2
1Institute for Cardiovascular Prevention (IPEK), Faculty of Medicine, Ludwig-Maximilians-University, Munich, Germany.
作为细胞死亡途径的铁亡,涉及到核因子红色素-2衍生,类似-1 (NFE2L1) 和全方位蛋白酶体系统 (UPS). 我们发现DNA损伤诱导性1同源2 (DDI2) 对NFE2L1激活至关重要,影响铁和蛋白质酶功能.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生化学
- 在瘤学瘤学.
背景情况:
- 铁亡是一种依赖于铁的细胞死亡途径.
- 核因子红色素-2衍生,类似-1 (NFE2L1) 涉及到铁.
- 无素-蛋白酶体系统 (UPS) 在铁亡中的作用尚未完全理解.
研究的目的:
- 研究ferroptosis期间NFE2L1的调节.
- 阐明UPS在铁亡中的作用.
- 确定ferroptosis调节的潜在治疗点.
主要方法:
- 无偏的蛋白质组分析以确定无处不在的位.
- 使用RSL3.3诱导铁亡.
- 对缺乏可诱导DNA损伤的细胞的分析1同位素2 (DDI2).
- 用DDI2抑制剂内尔菲纳维尔进行治疗.
主要成果:
- 铁质诱导重新校准了UPS,抑制了蛋白酶体活动,导致了全球的超普遍化.
- 在铁灭过程中NFE2L1的激活取决于其由DDI2.2.的蛋白质分解裂变.
- 破坏DDI2-NFE2L1通路会损害蛋白质体功能,并促进细胞死亡.
- 作为DDI2抑制剂的内尔菲纳维尔,使细胞对铁亡产生敏感.
结论:
- 这种UPS在ferroptosis中起着至关重要的作用.
- DDI2-NFE2L1轴是铁和蛋白质酶功能的一个关键调节器.
- 向DDI2-NFE2L1活性代表了增强ferroptosis诱导癌症疗法的潜在治疗策略.
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