کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2089008 | 1545770 | 2008 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microwave-accelerated surface plasmon-coupled directional luminescence 2: A platform technology for ultra fast and sensitive target DNA detection in whole blood
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کلمات کلیدی
SPFSFDTDSPCLSurface plasmon fluorescence spectroscopySurface plasmon-coupled emission - انتشار پلاسمونی سطحیSPR - تشدید پلاسمون سطحیSurface plasmon resonance - تشدید پلاسمون سطحیFinite-difference time-domain - دامنه اختیاری محدودSurface-enhanced fluorescence - فلورسانس افزایش سطحMetal-enhanced fluorescence - فلورسانس افزایش فلزیRadiative decay engineering - مهندسی فرسایش شعاعیChemiluminescence - نورتابی شیمیایی یا کمی لومی نسانسHepatitis C - هپاتیت C
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیوتکنولوژی یا زیستفناوری
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The application of Microwave-Accelerated Surface Plasmon-Coupled Luminescence (MA-SPCL) to fast and sensitive DNA hybridization assays in buffer and whole blood is presented. In this regard, a model DNA hybridization assay whereby a fluorophore-labeled target ssDNA specific to human immunodeficiency, Hepatitis C (Hep C), is probed by an anchor probe immobilized on thin gold films, is driven to completion within 1 min with microwave heating, as compared to an identical assay completed in â 4 h at room temperature. Finite-Difference Time-Domain calculations show that gold disks are preferentially heated around the edges creating a temperature gradient along the disks, which in turn results in the larger influx of complementary DNA towards anchor probe-modified surface. Thermal images of the assay platform during microwave heating also provide additional information on the microwave heating pattern in the microwave cavity. Finally, the effects of low power microwave heating on the ability of DNA to re-hybridize with the complimentary target on the surface gold films, which allows the multiple re-use of the gold films, is demonstrated. The MA-SPCL technique offers an alternative approach to current DNA based detection technologies, especially when speed and sensitivity are required, such as in the identification of DNA or even RNA-based diseases using whole blood samples that affect human health.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Immunological Methods - Volume 331, Issues 1â2, 29 February 2008, Pages 103-113
Journal: Journal of Immunological Methods - Volume 331, Issues 1â2, 29 February 2008, Pages 103-113
نویسندگان
Kadir Aslan, Michael J.R. Previte, Yongxia Zhang, Chris D. Geddes,