title: Quantitative analysis of specific target DNA oligomers using a DNA-immobilized packed-column system.
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.
authors.affiliation: Department of Biotechnology and Bioinformatics, Korea University, Jochiwon, Chungnam, South Korea. spack@korea.ac.kr
authors.forename: Seung Pil
authors.initials: SP
authors.lastname: Pack
authors.forename: Tae-Hwe
authors.initials: TH
authors.lastname: Heo
authors.forename: Kamakshaiah Charyulu
authors.initials: KC
authors.lastname: Devarayapalli
authors.forename: Keisuke
authors.initials: K
authors.lastname: Makino
mesh_terms: D004247:DNA / Q000032:analysis*; D015342:DNA Probes / Q000737:chemistry; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation / Q000379:methods*; D013696:Temperature
chemical_list: D015342:DNA Probes; D004247:DNA