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Updated: Jul 14, 2025
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Detection and Isolation of Apoptotic Bodies to High Purity
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通过细胞经历了亡,亡和铁亡的细胞产生的外体细胞外囊泡的系统组成分析
Benjamin Cappe1,2, Mike Vadi1,2, Eliza Sack3
1Cell Death and Inflammation Unit, VIB Center for Inflammation Research, Ghent, Belgium.
Journal of extracellular vesicles
|October 8, 2023
概括
细胞外囊泡 (EVs) 根据细胞死亡类型有所不同. 调节细胞死亡 (RCD) 影响EV生物发生和蛋白质载荷,影响细胞通信.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生化学
- 分子生物学分子生物学
背景情况:
- 细胞外囊泡 (EVs) 是细胞间通信的关键媒介.
- 在细胞死亡过程中释放出EV,但它们的组成因细胞死亡方式而异.
- 了解这些变异对于破译健康和疾病中的细胞对细胞信号至关重要.
研究的目的:
- 为了比较分析在不同类型的受调细胞死亡 (RCD) 过程中产生的细胞外囊泡 (EVs).
- 调查死细胞灭绝,细胞灭绝和铁细胞灭绝如何影响EV生物发生,蛋白质载荷和RNA甲基化.
- 与稳定状态EVs (ssEVs) 相比,识别与细胞死亡相关的EVs (cdEVs) 的独特分子特征.
主要方法:
- 对稳定状态EVs (ssEVs) 和细胞死亡相关的EVs (cdEVs) 的比较分析,这些EVs来自TNF诱导的亡,反Fas诱导的亡和ML162诱导的铁亡.
- 在孤立的EV中确定生物物理和生物化学特征,蛋白质载荷和甲基化核糖体RNA (rRNA).
- 蛋白质组分析以确定蛋白质含量和功能丰富的差异.
主要成果:
- 与ssEV相比,所有cdEV的总蛋白质含量都增加了.
- 与ssEV相比,cdEV显示重叠但在数量上不同的蛋白质载荷.
- 所有cdeV都富含与RNA剪接和核出口相关的蛋白质,具有独特的rRNA甲基化模式.
- 与亡和亡相关的EV (necEV和apoEV) 与与铁亡相关的EV (ferEV) 不同的是,它们富含于核糖体生物发生蛋白.
结论:
- 不同的RCD模式导致EV组成的定量和质量变化.
- 在亡和亡过程中产生的EV共享与核糖体生物发生相关的特定蛋白质丰富,与亡不同.
- 这些发现突显了cdeVs的模式特异性及其在细胞死亡期间细胞间通信中的潜在作用.
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