Duplex, real-time one-step RT-PCR was performed using the Rotor-Gene Multiplex RT-PCR Kit and self-designed TaqMan assays for 28S rRNA (Cyanine 670 dye; data in inset) and PPIA (cyclophilin A, FAM dye). Triplicate reactions were run on the Rotor-Gene 3000 using leukocyte RNA as template (10-fold dilutions from 100 ng to 10 pg). The amplification plots for the duplex reactions (colored) overlapped with those for control singleplex reactions (gray), demonstrating the reliability of the duplex analysis.
Duplex, real-time one-step RT-PCR using in vitro transcripts of [A] HSP90AA1 (109, 107, 105, 103, or 10 copies) and [B] GAPDH (109 copies) was performed (colored curves). For comparison, singleplex RT-PCR was also carried out (gray curves). Duplicate reactions were run on the Rotor-Gene 6000 using the Rotor-Gene Multiplex RT-PCR Kit and self-designed TaqMan assays. Reliable duplex RT-PCR is demonstrated by the evenly spaced curves for HSP90AA1 and overlapping curves for GAPDH. The efficiency of [C] HSP90AA1 amplification was in an optimal range.
4-plex, real-time one-step RT-PCR was performed using the Rotor-Gene Multiplex RT-PCR Kit and self-designed TaqMan assays for the indicated targets. Reactions were run on the Rotor-Gene Q using 100, 10, 1, or 0.1 ng RNA from HeLa cells. The plots of CT value versus log template amount were parallel, indicating all 4 targets were amplified with the same high efficiency. GAPDH: glyceraldehyde-3-phosphate dehydrogenase; RPS27A: ribosomal protein S27a; NFKB: nuclear factor of kappa light polypeptide gene enhancer in B-cells.