Simultaneous Qualitative And Quantitative Identification Of Multiple Targets By Polymerase Chain Reaction On Microarray

Details Simultaneous Qualitative And Quantitative Identification Of Multiple Targets By Polymerase Chain Reaction On Microarray Simultaneous Qualitative And Quantitative Identification Of Multiple Targets By Polymerase Chain Reaction On Microarray

2008-11-10

arxiv.org/abs/0811.1263v1

Chapter 12 at "Oligonucleotide Array Sequence Analysis", Nova Publishers, ISBN: 978-1-60456-542-3

Biology

Quantitative Biology

Quantitative Methods

Scientific paper

An approach for multiplex qualitative and quantitative microarray-based PCR analysis has been proposed. The characteristics of PCR executed on a gel-based oligonucleotide microarray with immobilized forward primers and a single common reverse primer in solution were investigated for several DNA targets. One-stage multiplex on-chip PCR was studied for simultaneous amplification of herpes simplex viruses types 1 and 2, cytomegalovirus DNA, and bacteriophage lambda DNA as an internal control. Additionally the joint analysis of increased number of targets (with addition of Chlamydia trachomatis, Mycoplasma hominis, and Ureaplasma urealyticum DNA) was done in two-stage version of assay: first stage was in-tube PCR with target-specific primers, while the reverse ones contained 5'-adapter region; the second stage was on-chip amplification with immobilized target-specific forward primers and adapter as common reverse primer in solution. The possible application of one-stage reaction for human cDNA analysis was additionally demonstrated with utilization of a common poly-T-containing primer in solution. SYBR green I; and Cy-5 labeled dUTP were used for real-time and end-point detection of specific PCR products. The efficiencies of both one-stage and two-stage reactions was shown to be strongly dependent on magnesium and primers concentrations. Quantitative PCR in the both versions was studied with 10-fold serial dilutions of phage lambda DNA. The method enabled detection of 6 DNA copies per reaction for both versions of assay. The quantitative interval for one-stage reaction covered eight orders of concentration. The revealed significant effect of gel pad size on microarray PCR effectiveness has been discussed.

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