使用目标调节感应开关突破上转换纳米探测器的信号到背景限制
Tao Liang1, Zhen Li1,2, Peipei Wang1
1Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China.
Journal of the American Chemical Society
|October 27, 2018
概括
研究人员使用有机染料开关开发了一种新的向上转换纳米探针策略,以改善信号与背景比率 (SBR). 这一突破增强了像谷氨 (GSH) 这样的生物感知能力.
科学领域:
- 纳米技术
- 生物医学工程
- 分析化学
背景情况:
- 在生物传感和生物成像方面,用兰化物添加的升级纳米粒子 (UCNPs) 是有前途的.
- 上转换 (UC) 探测器的一个关键限制是信号与背景的低比率 (SBR).
- 目前的UC纳米探测器依赖于发光共振能量转移 (LRET) 以有限的火效率来改善SBR.
研究的目的:
- 引入一种用于制造具有显著增强SBR的UC纳米探针的新策略.
- 开发一种UC纳米探测器,用于敏感和特异性检测谷氨 (GSH).
- 为改善UC纳米探针性能验证目标调制敏感化方法.
主要方法:
- 使用有机染料作为目标调制敏感开关制造UC纳米探针.
- 有机染料同时作为目标识别单元和上转光度 (UCL) 的敏感剂.
- 在体外和体内检测谷氨 (GSH) 探针的验证.
主要成果:
- 新的策略实现了大约30的GSH检测SBR,远高于传统的UC纳米探测器 (SBR<10).
- 该探针在体外和体内GSH检测应用中表现出有效的性能.
- 目标调节的敏感性有效地切换到UCL,导致显著的SBR改进.
结论:
- 目标调节敏感化是开发先进的UC纳米探测器的可行和有效策略.
- 这种方法克服了SBR瓶,为更强大的UC纳米探针应用铺平了道路.
- 开发的GSH探针显示了未来生物医学研究和诊断的潜力.
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