کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6484918 | 368 | 2016 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two-wheel drive-based DNA nanomachine and its sensing potential for highly sensitive analysis of cancer-related gene
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
With the biological significance and important advances of nano-scale DNA devices, scientific activities have been directed toward developing molecular machinery. In this work, we present a novel two-wheel drive-based DNA nanomachine composed of one signaling recognition probe (SRP), one label-free recognition probe (LRP), and one driving primer (DP). Target DNA hybridization can activate LRP-based wheel driving by resorting to DP-mediated polymerization/nicking/displacement cycles. This in turn results in the accumulation of nicked strand 1 (NS1) that can initiate extended SRP-based wheel driving. As a result, the hairpin structure of SRP is stretched and pre-quenched fluorescence is restored. Meanwhile, lots of nicked strand 2 (NS2) are produced, which could hybridize perfectly with SRP and lead to further fluorescence amplification. It is worth noting that, because the nanomachine operation relies strongly on inputted target trigger, the unwanted background is completely eliminated. The detection limit of 1Â pM and an excellent capability to recognize the single-base mutation were achieved. Significantly, the interrogating of target trigger extracted from cancer cells is already available, reflecting the potential for practical applications. As a proof-of-concept building, the unique analytical properties would significantly benefit the DNA nanomachines and reveal great promise in biochemical and biomedical studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomaterials - Volume 100, September 2016, Pages 110-117
Journal: Biomaterials - Volume 100, September 2016, Pages 110-117
نویسندگان
Jianguo Xu, Zai-Sheng Wu, Zhenmeng Wang, Hongling Li, Jingqing Le, Lee Jia,