血细胞外囊泡携带与免疫系统相关的,可以预测人类的寿命
Xin Zhang1,2, Sisi Ma3, Syeda Iffat Naz3
1Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, 27701, USA. xin.zhang193@duke.edu.
GeroScience
|December 18, 2024
概括
研究人员确定了与长寿相关的特定血细胞外囊泡 (EV) . 这些生物标志物,特别是补充成分,可以准确预测寿命,并建议延长寿命的潜在治疗点.
科学领域:
- 老年学和衰老研究研究.
- 生物标志物发现发现
- 细胞外囊泡生物学 细胞外囊泡生物学
背景情况:
- 细胞外囊泡 (EVs) 越来越多地被认为是它们在衰老过程中的作用.
- 确定可靠的长寿生物标志物对于理解和潜在地影响寿命至关重要.
- 以前的研究还没有完全阐明与异常长寿相关的特定EV衍生的分子特征.
研究的目的:
- 为了识别循环的细胞外囊泡 (EV) 生物标志物,这些生物标志物表明了老年人的长寿.
- 分析血EV蛋白质组,并将特定的丰度与生存时间相关联.
- 评估已识别的EV的长寿预测准确度.
主要方法:
- 血细胞外囊泡 (EVs) 从48名老年人中分离出来,生存结果各不相同.
- 使用高分辨率质谱和流动细胞测量来分析EV蛋白质组.
- 在发现和验证队列中分析了蛋白质组数据,以使用接收器运行特征曲线 (AUC) 评估预测性能.
主要成果:
- 与长寿相关的大型EVs (LEVs) 主要与免疫细胞 (例如,HLA-ABC+,CD9+,CD31+) 和肌肉细胞 (例如,MCAD+,RyR2+) 有关.
- 在7960个确定的EV中,很大一部分与免疫系统 (46.4%) 和肌肉 (10.1%) 有关.
- 仅由3-5个血EV组成的小组,主要是补充成分 (C2-C6),实现了对长寿的高预测准确性 (AUC 0.91-1).
结论:
- 免疫细胞产生与长寿相关的血EV,这表明免疫功能在衰老中起着关键作用.
- 特定的EV,特别是补充成分,作为预测寿命的强有力的生物标志物.
- 准补充路径为延长人类寿命提供了一个潜在的治疗策略.
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