کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
751791 | 895261 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Label-free protein recognition using an aptamer-based impedance measurement assay
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel aptamer-based biosensing assay for label-free protein detection and quantification by measuring the change in electrochemical impedance upon protein–aptamer complex formation was demonstrated. Our process starts with a self-assembly of the DNA aptamer on a microfabricated thin film gold electrode, followed by the recognition of the protein binding event via monitoring the interfacial electron transfer resistance with electrochemical impedance spectroscopy. The thrombin binding aptamer (TBA) has high binding affinity and specificity to its target protein and the impedance detection assay shows a reliable and sensitive quantification of thrombin with a detection range of four orders of magnitude and a detection limit of 0.1 nM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 114, Issue 1, 30 March 2006, Pages 433–437
Journal: Sensors and Actuators B: Chemical - Volume 114, Issue 1, 30 March 2006, Pages 433–437
نویسندگان
Hong Cai, Thomas Ming-Hung Lee, I-Ming Hsing,