响应pH和还原酶的SERS针头,可在溶液和组织环境中进行比度检测
Qingmei Zhong1, Xiaomei Rong1, Jiayi Liu1
1Hunan Engineering Research Center for Monitoring and Treatment of Heavy Metals Pollution in the Upper Reaches of Xiangjiang River, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, PR China.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|January 28, 2026
概括
这项研究引入了一种新方法,使用含有金纳米粒子的针针和用于在组织中同时检测pH和缩酶 (NTR) 的特定分子. 这种非破坏性技术有助于诊断瘤缺氧和评估酸平衡.
科学领域:
- 生物医学工程 生物医学工程
- 分析化学 分析化学
- 纳米技术 纳米技术
背景情况:
- 组织pH和缩酶 (NTR) 检测对于诊断瘤缺氧和了解酸平衡至关重要.
- 目前的检测方法通常需要破坏性样品预处理,从而损害组织完整性.
- 针针为组织内分析提供了一种最小侵入性的替代方案.
研究的目的:
- 开发一种用于在完整组织中同时非破坏性检测pH和NTR的新型探针.
- 使用表面增强的拉曼光谱法 (SERS) 进行敏感和精确的测量.
- 克服传统破坏性样本分析方法的局限性.
主要方法:
- 开发一个由针针,金纳米粒子 (Au NPs) 和5-mercapto-2-nitrobenzoic acid (MNBA) 组成的探针.
- 在溶液和完整组织样本中应用ANs@Au NPs@MNBA探针用于基于SERS的检测.
- 在指定的pH和NTR度范围内验证探头的性能.
主要成果:
- 开发的探头能够同时测定pH和NTR的比度.
- 对于pH (4.757.25) 和NTR (020.0μg/mL) 观察到出色的线性反应.
- 该方法在分析溶液和完整组织样本方面都被证明是有效的.
结论:
- 基于针针的新型SERS探针为现场组织分析提供了一种非破坏性的方法.
- 这项技术为组织微环境提供了宝贵的见解,对于疾病诊断和生理学研究至关重要.
- 该方法推进了复杂生物样本的生物传感领域.
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