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相关概念视频

Enzyme-Linked Immunosorbent Assay01:33

Enzyme-Linked Immunosorbent Assay

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In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen.  Enzyme-substrate reaction allows the antigen to be visualized or...
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相关实验视频

Updated: Jul 22, 2025

Flow-pattern Guided Fabrication of High-density Barcode Antibody Microarray
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微型数组格式的小型数字ELISA,通过石版蛋白质图案进行启用.

Andrew D Stephens1, Yujing Song1, Brandon L McClellan2

  • 1Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.

Biosensors & bioelectronics
|July 20, 2023
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新型的蛋白质微阵列,用于高灵敏度,同时检测癌症生物标志物在子图形/毫升水平. 这种单分子计数试验使用微来提高灵敏度和多重化,有助于早期发现疾病.

关键词:
发现生物标志物的发现.数字免疫测试是一种数字免疫测试.瘤小鼠模型模型多重生物标志物检测多重生物标志物检测蛋白质微阵列中的蛋白质微阵列.蛋白质模式的形成

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Counting Proteins in Single Cells with Addressable Droplet Microarrays
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科学领域:

  • 生物技术是生物技术.
  • 生物化学 生物化学
  • 医学诊断 医学诊断 医学诊断

背景情况:

  • 目前的免疫测试技术缺乏有效的早期疾病检测所需的灵敏度和多重复合能力.
  • 发现可靠的蛋白质生物标志物对于推进诊断和治疗至关重要.

研究的目的:

  • 开发一种高度敏感的蛋白质微阵列,能够进行单分子计数,用于放大信号检测.
  • 为了使多个癌症生物标志物的同时检测在非常低的度 (sub-pg/mL).
  • 创建一个小型化的,具有成本效益的,节省样本的免疫测试平台.

主要方法:

  • 采用光刻光学来创建新型蛋白质图案,以创建分为微波的捕获抗体斑点的数组.
  • 实施单分子计数作为微小内的信号放大策略.
  • 在标准玻璃基板上开发了多重免疫试验,需要最小的样本体积 (<10μL).

主要成果:

  • 在pg/mL以下水平实现了蛋白质生物标志物的高度敏感检测.
  • 证明了对一组癌症生物标志物的同时检测.
  • 在小鼠模型中成功测量了与质瘤瘤进展相关的六个分泌因子.

结论:

  • 开发的蛋白质微阵列为生物标志物检测提供了增强的灵敏度和多重复合能力.
  • 这项技术使得有效的样本节省分析成为可能,这对于纵向研究和早期疾病检测至关重要.
  • 该平台具有很大的潜力,可以通过动物模型推进疾病进展和治疗发现的研究.