[논문]Fluorescence melting curve analysis using self-quenching dual-labeled peptide nucleic acid probes for simultaneously identifying multiple DNA sequences

Ahn, J.J.; Kim, Y.; Lee, S.Y.; Hong, J.Y.; Kim, G.W.; Hwang, S.Y.

doi:10.1016/j.ab.2015.05.022

Fluorescence melting curve analysis using self-quenching dual-labeled peptide nucleic acid probes for simultaneously identifying multiple DNA sequences

Analytical biochemistry, v.484, 2015년, pp.143 - 147

Ahn, J.J. , Kim, Y. , Lee, S.Y. , Hong, J.Y. , Kim, G.W. , Hwang, S.Y.

Abstract ▼ AI-Helper

Previous fluorescence melting curve analysis (FMCA) used intercalating dyes, and this method has restricted application. Therefore, FMCA methods such as probe-based FMCA and molecular beacons were studied. However, the usual dual-labeled probes do not possess adequate fluorescence quenching ability and sufficient specificity, and molecular beacons with the necessary stem structures are hard to design. Therefore, we have developed a peptide nucleic acid (PNA)-based FMCA method. PNA oligonucleotide can have a much higher melting temperature (Tm) value than DNA. Therefore, short PNA probes can have adequate Tm values for FMCA, and short probes can have higher specificity and accuracy in FMCA. Moreover, dual-labeled PNA probes have self-quenching ability via single-strand base stacking, which makes PNA more favorable. In addition, this method can facilitate simultaneous identification of multiple DNA templates. In conventional real-time polymerase chain reaction (PCR), one fluorescence channel can identify only one DNA template. However, this method uses two fluorescence channels to detect three types of DNA. Experiments were performed with one to three different DNA sequences mixed in a single tube. This method can be used to identify multiple DNA sequences in a single tube with high specificity and high clarity.

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참고문헌 (20)

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Fluorescence melting curve analysis using self-quenching dual-labeled peptide nucleic acid probes for simultaneously identifying multiple DNA sequences

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Fluorescence melting curve analysis using self-quenching dual-labeled peptide nucleic acid probes for simultaneously identifying multiple DNA sequences

Abstract ▼ AI-Helper

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