4-plex, real-time one-step RT-PCR was carried out on the Mx3005P using the QuantiFast Multiplex RT-PCR +R Kit and Primer Express designed TaqMan assays. Duplicate reactions were run using 10 ng RNA from Ramos cells as template. All 4 targets, which varied greatly in abundance, were reproducibly detected.
Cell line X was treated with one of two compounds (Y or Z) or left untreated (U). RNA was purified and duplex, real-time one-step RT-PCR was carried out on the Applied Biosystems 7500 Fast System using the QuantiFast Multiplex RT-PCR +R Kit and TaqMan Gene Expression Assays for myogenin and GAPDH. For each treatment, 5 independent experiments were performed. [A] Changes in myogenin expression were detected with high accuracy and reproducibility (green curves). The expression of the housekeeping gene GAPDH was similar in all experiments (blue curves), allowing normalization of myogenin expression levels using the ΔΔCT method of relative quantification. [B] The fold changes in normalized myogenin expression level relative to that in untreated cells were consistent between experiments, as indicated by the small error bars. (Data kindly provided by Angelika Meyer, Novartis Pharma AG, Basel, Switzerland).
QuantiFast Multiplex Kits reduce total RT-PCR run time by up to 50% in real-time one-step RT-PCR (40 cycles run; comparison with QuantiTect Multiplex Kits). I: iCycler iQ; L1: LightCycler 480; L2: LightCycler 2.0; A1: ABI PRISM 7900; A2: Applied Biosystems 7500 Fast System; M: Mx3005P.