一种外泌体的分离检测方法及应用

CN116577403BActive Publication Date: 2026-07-17ZHONGSHAN HOSPITAL FUDAN UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGSHAN HOSPITAL FUDAN UNIV
Filing Date
2023-05-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing liver cancer detection technologies suffer from low sensitivity and poor accuracy. Traditional serological markers such as alpha-fetoprotein (AFP) show low accuracy, and early symptoms of hepatocellular carcinoma are not obvious. Traditional methods such as liver resection and transplantation are limited, necessitating more accurate markers for early diagnosis and monitoring.

Method used

Exosomes were separated using magnetic iron oxide nanospheres coated with titanium dioxide nanocoating, and in situ mass spectrometry was performed using MALDI-TOF MS. Significant metabolic biomarkers were screened by utilizing the strong interaction and rapid magnetic response between the titanium dioxide nanocoating and the exosomes.

Benefits of technology

It enables rapid, sensitive, and selective separation and detection of exosomes, and screens out 6 significantly different metabolic markers, achieving rapid in vitro diagnosis and prognostic monitoring of hepatocellular carcinoma with high sensitivity and accuracy.

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Abstract

本发明公开了一种外泌体的分离检测方法及应用。本发明利用包覆二氧化钛纳米涂层的磁性四氧化三铁纳米微球对血清中的外泌体进行分离富集,并用基质辅助激光电离解吸‑飞行时间质谱法获取外泌体的代谢物指纹图谱,对代谢物指纹图谱做特征提取和归一化,并进行正交偏最小二乘判别分析,以筛选代谢标志物,对健康人和肝细胞癌患者进行区分。所述磁性四氧化三铁纳米微球具有高价钛离子负载,能与外泌体的磷脂膜作用,从而分离外泌体,优异的紫外吸收特性确保高效的原位MALDI‑TOF MS检测。本发明的外泌体分离检测方法和系统,可以准确、高效地区别健康人和肝细胞癌患者,成本低、通量高、样品消耗少,具有广阔的应用前景。
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