基于DNA適配體的熒光生物傳感器
doi: 10.11999/JEIT190860 cstr: 32379.14.JEIT190860
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陜西師范大學(xué)生命科學(xué)學(xué)院 西安 710119
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陜西師范大學(xué)計(jì)算機(jī)科學(xué)學(xué)院 西安 710119
基金項(xiàng)目: 國(guó)家自然科學(xué)基金(61572302),陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃(2020JM-298)
DNA Aptamer-based Fluorescence Biosensor
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College of Life Science, Shaanxi Nomal University, Xi’an 710119, China
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School of Computer Science, Shaanxi Normal University, Xi’an 710119, China
Funds: The National Natural Science Foundation of China (61572302), The Natural Science Basic Research Plan in Shaanxi Province of China (2020JM-298)
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摘要: 近年來(lái),隨著DNA納米技術(shù)的飛速發(fā)展,基于DNA作為適配體的熒光生物傳感器不斷被大量學(xué)者研究和構(gòu)建,以實(shí)現(xiàn)對(duì)靶標(biāo)物質(zhì)的靈敏快速檢測(cè)。作為DNA納米技術(shù)的新興方向,基于DNA適配體的熒光生物傳感器具有巨大的應(yīng)用潛力。該文對(duì)近年來(lái)基于DNA適配體所構(gòu)建的熒光生物傳感器進(jìn)行了總結(jié)。包括熒光信號(hào)的實(shí)現(xiàn):熒光染料標(biāo)記;非熒光染料標(biāo)記。熒光檢測(cè)信號(hào)的提升:酶介導(dǎo)的靶標(biāo)循環(huán)和信號(hào)擴(kuò)增策略;鏈置換反應(yīng)介導(dǎo)的靶標(biāo)循環(huán)和信號(hào)擴(kuò)增策略;基于鏈置換反應(yīng)和酶介導(dǎo)的靶標(biāo)循環(huán)和信號(hào)擴(kuò)增策略。在此基礎(chǔ)上對(duì)基于DNA適配體的熒光生物傳感器進(jìn)行展望并提出建議。Abstract: In recent years, with the rapid development of DNA nanotechnology, fluorescence biosensors based on DNA as aptamer are studied and constructed by a large number of scholars in order to realize the sensitive and rapid detection of target materials. As a new branch of DNA nanotechnology, fluorescence biosensors based on DNA aptamer have great application. The fluorescence biosensors based on DNA aptamers are summarized. The realization of fluorescence signal contains fluorescent dyes and non-fluorescent dye labeled. Enhancement of fluorescence signals involve enzyme-assisted, chain replacement reaction and both of all mediated target circulation and signals amplification strategy. On this basis, the fluorescence biosensor based on DNA aptamer is prospected and some suggestions are put forward.
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Key words:
- Biosensor /
- DNA aptamer /
- Fluorenscence analysis
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