高通量,多重量化量化,并在单个分子水平上对单个EV进行排序
bioRxiv : the preprint server for biology
|November 18, 2024
概括
我们开发了BDEVS,这是一个高通量平台,用于在血中超敏感地分析单个细胞外囊泡 (EVs). 这项技术使EV的精确量化和分类成为可能,促进了癌症免疫学研究和诊断.
科学领域:
- 生物技术是生物技术.
- 纳米技术 纳米技术
- 癌症免疫学 癌症免疫学
背景情况:
- 细胞外囊泡 (EVs) 在细胞间通信和疾病进展中至关重要.
- 目前用于EV分析的方法缺乏复杂临床样本的吞吐量,灵敏度或多重复合能力.
研究的目的:
- 开发一种新的平台,用于直接在等离子体中对单个电动汽车进行高通量,多重复合和超敏感的分析.
- 克服EV分析现有技术的局限性,从而更好地了解瘤与免疫相互作用.
主要方法:
- 开发了BDEVS (基于阿加罗斯珠的数字单分子单电动汽车分类) 平台.
- 集成的滚动圆放大 (RCA) 裂变的EV表面蛋白质在阿加滴.
- 利用流量细胞测量来读取,量化和分类电动汽车.
主要成果:
- 在高吞吐量 (数千个EV/分钟) 实现单分子灵敏度和中等多重复合 (3-plex).
- 与黄金标准相比,对EV亚群的检测极限进行了约100倍的改进.
- 成功地在血中对免疫标记物 (PD-L1,CD155) 和黑色素瘤标记物 (TYRP-1) 进行了EV的分析和分类.
结论:
- BDEVS为分析瘤免疫相互作用和检测罕见的EV亚群提供了前所未有的分辨率.
- 该平台显示了基于EV的诊断和癌症免疫学的治疗监测的变革潜力.
- 通过BDEVS,可以精确量化和分类EVs,这对于了解临床样本中的疾病异质性至关重要.
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