同时检测两种类型的细胞外囊泡,使用超明亮的光纳米球基试验条
Zhi-Hua Li1, Xing-Chi Liu2, Dan Wang1
1College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China. zqtian@whu.edu.cn.
Analytical methods : advancing methods and applications
|July 22, 2024
概括
新的光纳米球测试条准确地测量唾液中的PD-L1阳性细胞外囊泡 (EV),提高了瘤诊断和预后的液体活检准确度.
科学领域:
- 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
- 在诊断中的纳米技术.
背景情况:
- 细胞外囊泡 (EVs) 携带来自细胞的载荷,是液体活检 (LB) 的有希望的生物标志物.
- 像ELISA这样的当前方法缺乏EV细胞起源的特异性,限制了LB的准确性.
- 精确量化特定的EV亚群对于疾病诊断和监测至关重要.
研究的目的:
- 开发一种新的方法,专门从不同的细胞来源量化PD-L1阳性EVs (PD-L1+EVs).
- 为了实现精确的基于EV的液体活检,用于瘤诊断和预后评估.
- 为分析体液中的EV亚群提供方便和高效的工具.
主要方法:
- 开发基于超明亮光纳米圈 (FNs) 的测试条.
- 使用侧流色谱进行快速检测 (<30分钟).
- 在人类唾液中量化PD-L1+ EV亚群.
主要成果:
- 基于FNs的试验条显示了从瘤和免疫细胞中特定检测PD-L1+ EVs.
- 在光强度和PD-L1水平之间观察到强烈的线性相关性,无论是来自瘤的EV (R2 = 0.993) 还是来自免疫细胞的EV (R2 = 0.982).
- 在唾液样本中量化EV亚群的高方便性和效率.
结论:
- 开发的基于FN的测试条提供了一种策略,可以准确地测量来自不同电池来源的EV载荷水平.
- 这项技术对于在瘤学中推进基于PD-L1+ EV亚种群的预测具有重大潜力.
- 该方法提高了基于EV的液体活检用于疾病诊断和预后的准确性和适用性.
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