کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5349551 | 1503546 | 2017 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A dual amplification strategy for ultrasensitive detection of microRNA
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A dual amplification strategy for ultrasensitive detection of microRNA A dual amplification strategy for ultrasensitive detection of microRNA](/preview/png/5349551.png)
چکیده انگلیسی
Here, we present a dual amplification strategy based on a duplex-specific nuclease and a hybridization chain reaction, which has been designed for the highly sensitive detection of miRNAs. In the first step, a loop amplification strategy based on a duplex-specific nuclease was employed to obtain a large number of ssDNA reporters that then act as initiators to trigger the next amplification step. The second step involves a hybridization chain reaction based on two hairpin DNAs denoted as H1 and H2. Doxorubicin-CdTe quantum dots, which function as detecting indicators that intercalated into the hybridization chain reaction products, lead to significantly amplified electrochemiluminescence signal readout. This dual amplification strategy enabled the sensitive detection of let-7d from 10 aM to 10Â nM with a detection limit of 10Â aM, and offered an excellent capacity to discriminate between microRNA family members. This assay therefore offers great potential applications in biomedical research and early clinical diagnosis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 426, 31 December 2017, Pages 597-604
Journal: Applied Surface Science - Volume 426, 31 December 2017, Pages 597-604
نویسندگان
Liping Lu, Bingjie Yang, Tianfang Kang,