当前位置: X-MOL 学术Anal. Chem. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
“One-Pot” Readout Cyano-Programmable SERS-Encoded Platform Enables Ultrasensitive and Interference-Free Detection of Multitarget Bioamines
Analytical Chemistry ( IF 6.7 ) Pub Date : 2024-07-24 , DOI: 10.1021/acs.analchem.4c02582
Chen Chen 1 , Xinyue Wang 1 , Ximo Wang 1 , Geoffrey I N Waterhouse 2 , Mingdi Jiang 3 , Xuguang Qiao 1 , Zhixiang Xu 1
Affiliation  

Surface-enhanced Raman spectroscopy (SERS) detection platforms with high signal-to-noise ratio in the “biological-silent” region (1800–2800 cm–1) are presently being developed for sensing and imaging applications, overcoming the limitations of traditional SERS studies in the “fingerprint” region. Herein, a series of cyano-programmable Raman reporters (RRs) operating in the “biological-silent” region were designed based on 4-mercaptobenzonitrile derivatives and then embedded in core–shell Au@Ag nanostars using a “bottom-up” strategy to provide SERS enhancement and encapsulation protection. The approach enabled the “one-pot” readout interference-free detection of multiple bioamines (histamine, tyramine, and β-phenethylamine) based on aptamer-driven magnetic-induced technology. Three cyano-encoded SERS tags resulted in separate SERS signals for histamine, tyramine, and β-phenethylamine at 2220, 2251, and 2150 cm–1, respectively. A target-specific aptamer-complementary DNA competitive binding strategy allowed the formation of microscale core-satellite assemblies between Fe3O4-based magnetic beads and the SERS tags, enabling multiple SERS signals to be observed simultaneously under a 785 nm laser excitation laser. The LODs for detection of the three bioamines were 0.61 × 10–5, 2.67 × 10–5, and 1.78 × 10–5 mg L–1, respectively. The SERS-encoded platform utilizing programmable reporters provides a fast and sensitive approach for the simultaneous detection of multiple biomarkers, paving the way for routine SERS analyses of multiple analytes in complex matrices.

中文翻译:


“一锅”读出氰基可编程 SERS 编码平台可实现多目标生物胺的超灵敏且无干扰检测



目前正在开发用于传感和成像应用的在“生物沉默”区域(1800–2800 cm –1 )具有高信噪比的表面增强拉曼光谱(SERS)检测平台,克服了传统SERS的局限性“指纹”领域的研究。在此,基于4-巯基苯甲腈衍生物设计了一系列在“生物沉默”区域运行的氰基可编程拉曼报告基因(RR),然后使用“自下而上”的策略将其嵌入核壳Au@Ag纳米星中,以实现提供SERS增强和封装保护。该方法基于适配体驱动的磁感应技术,实现了多种生物胺(组胺、酪胺和β-苯乙胺)的“一锅”读出无干扰检测。三个氰基编码的 SERS 标签分别在 2220、2251 和 2150 cm –1处产生组胺、酪胺和 β-苯乙胺的单独 SERS 信号。目标特异性适体互补 DNA 竞争性结合策略允许在基于 Fe 3 O 4的磁珠和 SERS 标签之间形成微型核心卫星组件,从而能够在 785 nm 激光激发激光下同时观察到多个 SERS 信号。三种生物胺的检测限分别为0.61 × 10 –5 、2.67 × 10 –5和1.78 × 10 –5 mg L –1 。利用可编程报告基因的 SERS 编码平台为同时检测多种生物标志物提供了一种快速、灵敏的方法,为复杂基质中多种分析物的常规 SERS 分析铺平了道路。
更新日期:2024-07-24
down
wechat
bug