Split Spinach Aptamer for Highly Selective Recognition of DNA and RNA at Ambient Temperatures.

Split Spinach Aptamer for Highly Selective Recognition of DNA and RNA at Ambient Temperatures.
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DOI:
10.1002/cbic.201600323
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发表时间:
2016-09-02
期刊:
Chembiochem : a European journal of chemical biology
影响因子:
--
通讯作者:
Kolpashchikov DM
Kolpashchikov DM
中科院分区:
其他
文献类型:
--
作者:
Kikuchi N;Kolpashchikov DM

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Split spinach aptamer (SSA) probes for fluorescent analysis of nucleic acids were designed and tested. In SSA design, two RNA or RNA/DNA strands hybridized to a specific nucleic acid analyte and formed a binding site for DFHBI dye, which was accompanied by up to 270-fold increase in fluorescence. The major advantage of the SSA probe over state-of-the art fluorescent probes is high selectivity: it produces only the background fluorescence in the presence of single base mismatched analyte even at room temperature. SSA is a promising tool for label-free analysis of nucleic acids at ambient temperatures. Two strands (SSA_m and SSA_f) hybridize to DNA or RNA analyte and form a binding site for organic dye DFHBI. Binding of DFHBI results in up to 270-fold fluorescence increase. The probe is highly selective to a single base mismatch at ambient temperatures.
固定细胞和活细胞中核酸可视化的荧光探针。
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