金色花涂层CoFe PBA具有增强的过氧化酶类活性,用于化学发光成像免疫测试
Ling Li1, Qingwen Chen1, Feng Shi1
1School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China. zjyang@yzu.edu.cn.
Chemical communications (Cambridge, England)
|July 29, 2024
概括
一种新的金涂普鲁士蓝色模拟物 (CoFe PBA@Au) 增强化学发光 (CL) 图像免疫测试. 这一突破为检测疾病生物标志物提供了敏感,稳定的替代方案.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 分析化学 分析化学
背景情况:
- 传统的化学发光 (CL) 图像免疫测试通常使用天然酶作为探针.
- 天然酶容易无活化,这限制了测定灵敏度和应用范围.
- 开发强大的,高度活跃的探针对于推进CL免疫测试至关重要.
研究的目的:
- 开发一种新的,高度活跃的基于纳米酶的探针,用于化学发光 (CL) 成像免疫测试.
- 使用新探针创建一个敏感的CL免疫传感器,用于检测疾病生物标志物.
- 建立一个通用战略,以提高CL免疫测试的敏感性.
主要方法:
- 合成金色花涂层的CoFe普鲁士蓝模拟物 (CoFe PBA@Au花) 纳米酶.
- 合成的纳米酶的过氧化酶类活性的表征.
- 使用CoFe PBA@Au布罗卡作为标签探针用于疾病生物标志物检测的CL成像免疫传感器的构建.
主要成果:
- 与传统的酶探针相比,合成的CoFe PBA@Au布罗卡德表现出增强的过氧化酶类活性.
- 在检测疾病生物标志物方面,CL免疫传感器表现出高灵敏度和出色的性能.
- 纳米酶探针显示稳定性得到改善,克服了天然酶的局限性.
结论:
- CoFe PBA@Au布罗卡特作为一个强大而稳定的标签探针,用于CL成像免疫测试.
- 这种方法提供了一种通用策略,可以显著提高CL成像免疫试验的灵敏度.
- 这项研究扩大了普鲁士蓝模拟 (PBA) 纳米酶在敏感诊断工具中的应用.
相关概念视频
01:20Immunogold Electron Microscopy
4.0K
Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.
4.0K
03:31Labeling DNA Probes
8.1K
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
8.1K
01:33Enzyme-Linked Immunosorbent Assay
12.7K
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...
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...
12.7K
01:12Immunofluorescence Microscopy
10.1K
A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
10.1K