Abstract
Although a DNA-immobilized packed-column (DNA-packed column), which relies on sequence-dependent interactions of target DNA or mRNA (in the mobile phase) with DNA probes (on the silica particle) in a continuous flow process, could be considered as an alternative platform for quantitative analysis of specific DNA to DNA chip methodology, the performance in practice has not been satisfactory. In this study, we set up a more efficient quantitative analysis system based on a DNA-packed column by employing a temperature-gradient strategy and DMSO-containing mobile phase. Using a temperature-gradient strategy based on T m values of probe/target DNA hybridizations and DMSO (5%)-containing mobile phase, we succeeded in the quantitative analysis of a specific complementary target distinguishable from non-complementary DNA oligomers or other similar DNA samples. In addition, two different target DNA oligomers even with similar T m values were separated and detected quantitatively by using a packed column carrying two different DNA probes.
| Original language | English |
|---|---|
| Pages (from-to) | 667-676 |
| Number of pages | 10 |
| Journal | Analytical and Bioanalytical Chemistry |
| Volume | 401 |
| Issue number | 2 |
| DOIs | |
| State | Published - Aug 2011 |
Bibliographical note
Funding Information:Acknowledgment This research was supported by the Converging Research Center Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 20090083290).
Keywords
- Bioanalytical methods
- Chromatography
- DNA oligomer separation
- DNA-immobilized packed column
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