Gene sensors based on peptide nucleic acid (PNA) probes: Relationship between sensor sensitivity and probe/target duplex stability
Literature Information
Publication Date
2005-08-02
DOI
10.1039/B507121F
Impact Factor
4.616
Authors
Hiroshi Aoki, Hiroaki Tao
View Original
Abstract
Gene sensors based on peptide nucleic acid (PNA) probes were prepared and the relationship between sensor sensitivity and the duplex stability of the probe PNAs and target complementary DNAs was studied using five synthesized PNAs (10-, 15-, 17-, 20-, and 22-mers). It was found that the association constants for the probe PNA/target DNA pairs depend not only on the length but also on the base pair sequence, and that the trend in the sensor responses was the same as that in the association constants for the corresponding pairs. In addition, by using two kinds of probe PNAs with different lengths, it was demonstrated that fabrication of sensors based on probe PNAs with comparable association constants yielded similar response curves and sensor sensitivities.
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