相关实验视频

Updated: Jul 2, 2025

Visualization of miniSOG Tagged DNA Repair Proteins in Combination with Electron Spectroscopic Imaging ESI

Visualization of miniSOG Tagged DNA Repair Proteins in Combination with Electron Spectroscopic Imaging ESI

Published on: September 24, 2015

AMP涂层的SERS纳米标签具有疏水锁定:最大限度地提高亮度,稳定性和细胞准能力

Lucas A Lane¹, Jinglei Zhang², Yiqing Wang²

¹International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC.

Journal of colloid and interface science

|February 25, 2024

概括

新的甲-PEG (AMP) 聚合物产生更明亮,更稳定的表面增强拉曼散射 (SERS) 纳米标签. 这些先进的SERS纳米标签显著提高了用于诊断和成像应用的灵敏度.

科学领域:

纳米技术纳米技术
生物医学工程生物医学工程
材料科学材料科学材料科学

背景情况:

表面增强拉曼散射 (SERS) 纳米标签对于敏感的诊断和成像至关重要.
现有的SERS纳米标签在稳定性和特异性方面面临挑战.
需要开发新材料来克服这些局限性.

研究的目的:

开发一种新的类型的高度稳定和明亮的SERS纳米标签.
为了研究甲-PEG (AMP) 聚合物在SERS纳米标签性能中的作用.
为了提高细胞标选择性和检测灵敏度.

主要方法:

在金纳米颗粒上涂上AMP聚合物的SERS纳米标签的合成.
纳米标签结构,稳定性和光学性能的表征.
在体外评估细胞标选择性和检测灵敏度.

主要成果:

在金纳米颗粒上,AMP聚合物形成双层涂层 (疏水内,疏水外).
这种涂层通过"锁定"记者和"锁定"干扰物来增强合体和信号稳定性.
涂有AMP的SERS纳米标签的亮度增加了约10倍,细胞检测灵敏度提高了近2倍.
特定与非特定的约束比率超过了一个数量级.

结论:

AMP聚合物为SERS纳米标签提供了优质的涂层,增强了稳定性和亮度.
AMP涂层的独特结构优化了介电环境,以提高SERS性能.
这些先进的SERS纳米标签显示出改善体外诊断和体内瘤成像的巨大潜力.

关键词:

纳米颗粒涂料的涂层塑制剂的使用方法这是一个 SERS 标签.在表面增强的拉曼散射中.针对瘤的向.

更多相关视频

Optimizing the Genetic Incorporation of Chemical Probes into GPCRs for Photo-crosslinking Mapping and Bioorthogonal Chemistry in Live Mammalian Cells

Optimizing the Genetic Incorporation of Chemical Probes into GPCRs for Photo-crosslinking Mapping and Bioorthogonal Chemistry in Live Mammalian Cells

Published on: April 9, 2018

Spatiotemporally Controlled Nuclear Translocation of Guests in Living Cells Using Caged Molecular Glues as Photoactivatable Tags

Spatiotemporally Controlled Nuclear Translocation of Guests in Living Cells Using Caged Molecular Glues as Photoactivatable Tags

Published on: January 17, 2019

相关概念视频

Labeling DNA Probes

Labeling DNA Probes

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...

Tagging and Fusion Proteins

Tagging and Fusion Proteins

Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...