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相关实验视频

Updated: Jun 21, 2025

Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays
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上转换基于纳米粒子的增强发光侧流试验用于尿路生物标志物监测.

Marylyn Setsuko Arai1,2, Hyunho Kim2, Madeleine Pascavis2

  • 1São Carlos Institute of Physics, University of São Paulo, São Carlos, SP 13566-590, Brazil.

ACS applied materials & interfaces
|July 9, 2024
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概括

这项研究介绍了一种基于向上转换纳米粒子 (UCNP) 的横向流量试验,用于快速准确地检测损伤生物标志物. 增强的传感器平台为早期疾病诊断提供了一个用户友好的解决方案.

关键词:
生物传感器生物传感器造成脏损伤的人.侧向流动的侧向流动一个便携式传感器.通过将纳米颗粒转化到上方.

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科学领域:

  • 纳米技术 纳米技术
  • 生物医学工程 生物医学工程
  • 分析化学 分析化学

背景情况:

  • 准确和早期的疾病诊断依赖于高效的生物标志物检测,这是便携式传感的持续挑战.
  • 现有的诊断方法往往缺乏广泛临床应用所需的速度,灵敏度或可移植性.

研究的目的:

  • 开发一种增强的发光侧流测定方法,使用上转换纳米粒子 (UCNPs) 进行敏感和快速的生物标记检测.
  • 通过检测急性损伤生物标志物来证明传感器对健康监测的能力.

主要方法:

  • 设计的多层上转化纳米粒子 (UCNP@mSiO2@Au) 具有增强的发光特性.
  • 将UCNP集成到一个带有便携式阅读器和智能手机应用程序的横向流量测试平台中.
  • 在尿液样本中量化损伤分子-1 (KIM-1) 和中性粒细胞凝酶相关的脂卡林 (NGAL).

主要成果:

  • 在UCNP@mSiO2@Au纳米粒子展现了超过40倍的增强排放.
  • 该试验成功检测到KIM-1和NGAL在0.1到20 ng/mL的尿样中.
  • 达到低检测极限 (KIM-1的0.28 ng/mL,NGAL的0.23 ng/mL),结果与ELISA的相关性很好.

结论:

  • 开发的基于UCNP的横向流量测定提供了可靠,快速和用户友好的诊断工具.
  • 这项技术在早期疾病诊断和护理场所应用方面具有重大潜力.
  • 增强的发光和易于使用使UCNP平台适用于各种生物测试.