کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5031284 | 1470942 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A dual-signal strategy for the solid detection of both small molecules and proteins based on magnetic separation and highly fluorescent copper nanoclusters
ترجمه فارسی عنوان
استراتژی دوگانه سیگنال برای تشخیص جامد مولکول های کوچک و پروتئین ها براساس جداسازی مغناطیسی و نانوکیلرهای مس بسیار فلورسنت
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کلمات کلیدی
پروتئین، مولکول کوچک، جداسازی مغناطیسی، نانوکیلرهای مس، سیگنال دوگانه،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Recently, a variety of analytical methods for the detection of small molecules or proteins based on small molecule-protein interaction have been developed. However, these methods often focus on either small molecules or proteins. Few efforts are made to detect both of them in the same system. In this work, a dual-signal strategy for the solid detection of both small molecules and proteins based on small molecule-protein interaction is proposed by using the streptavidin-biotin couple as a model. In our strategy, magnetic nanoparticles (MNPs) are adopted for target separation, and highly fluorescent copper nanoclusters (CuNCs) are synthesized in situ to give signals. In the absence of the targets, CuNCs are associated with the MNPs and present in the precipitate under magnetic field; whereas in the presence of either streptavidin or biotin, the CuNCs will present in the supernate. By monitoring the fluorescent intensity of each, dual-signal can be obtained for the solid detection of either the protein or the small molecule. Results show that sensitive and specific detection of both streptavidin (detection limit: 0.47Â nM) and biotin (detection limit: 3.1Â nM) can be achieved. This method can be extended for the detection of other small molecule-protein couples, and thereby has the potential for biomedical and clinical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 90, 15 April 2017, Pages 534-541
Journal: Biosensors and Bioelectronics - Volume 90, 15 April 2017, Pages 534-541
نویسندگان
Jiepei Cao, Wei Wang, Bing Bo, Xiaoxia Mao, Keming Wang, Xiaoli Zhu,