Using personal glucose meters and functional DNA sensors to quantify a variety of analytical targets.
Using personal glucose meters and functional DNA sensors to quantify a variety of analytical targets.
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DOI:
10.1038/nchem.1092
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发表时间:
2011-07-24
期刊:
影响因子:
21.8
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中科院分区:
文献类型:
--
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Portable, low-cost and quantitative detection of a broad range of targets at home and in the field has the potential to revolutionize medical diagnostics and environmental monitoring. Despite many years of research, very few such devices are commercially available. Taking advantage of the wide availability and low cost of the pocket-sized personal glucose meter—used worldwide by diabetes sufferers—we demonstrate a method to use such meters to quantify non-glucose targets, ranging from a recreational drug (cocaine, 3.4 μM detection limit) to an important biological cofactor (adenosine, 18 μM detection limit), to a disease marker (interferon-gamma of tuberculosis, 2.6 nM detection limit) and a toxic metal ion (uranium, 9.1 nM detection limit). The method is based on the target-induced release of invertase from a functional-DNA–invertase conjugate. The released invertase converts sucrose into glucose, which is detectable using the meter. The approach should be easily applicable to the detection of many other targets through the use of suitable functional-DNA partners (aptamers DNAzymes or aptazymes).
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影响因子:
62.1
作者:
Liu, Juewen;Cao, Zehui;Lu, Yi
通讯作者:
Lu, Yi
影响因子:
14.9
作者:
Lee, JF;Hesselberth, JR;Ellington, AD
通讯作者:
Ellington, AD
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15
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Nutiu, R;Li, YF
通讯作者:
Li, YF
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Liu, JW;Lu, Y
通讯作者:
Lu, Y
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Li, J;Lu, Y
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Lu, Y