Aptamer nano-flares for molecular detection in living cells.
Aptamer nano-flares for molecular detection in living cells.
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DOI:
10.1021/nl901517b
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发表时间:
2009-09
期刊:
影响因子:
10.8
通讯作者:
Mirkin CA
中科院分区:
文献类型:
--
作者:
Zheng D;Seferos DS;Giljohann DA;Patel PC;Mirkin CA
We demonstrate a composite nanomaterial, termed an aptamer nano-flare, that can directly quantify an intracellular analyte in a living cell. Aptamer nano-flares consist of a gold nanoparticle core functionalized with a dense monolayer of nucleic acid aptamers with a high affinity for adenosine triphosphate (ATP). The probes bind selectively to target molecules and release fluorescent reporters which indicate the presence of the analyte. Additionally, these nanoconjugates are readily taken up by cells where their signal intensity can be used to quantify intracellular analyte concentration. These nanoconjugates are a promising approach for the intracellular quantification of other small molecules or proteins, or as agents that use aptamer binding to elicit a biological response in living systems.
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