Real-time qPCR results showed similar trends in gene expression changes as were observed in microarray studies.
Genes were considered to be expressed, if significant expression was observed in microarray experiments, or corresponding proteins were found in proteome analyses.
Deviations from the behavior, which we describe here, are observed in microarray experiments and they must be due to complexity of DNA target mixtures.
These growth factors and transcriptional regulators are upregulated in ACC which, was observed in microarray analyses (Giordano et al, 2003; Tissier et al, 2005; Slater et al, 2006) and might support the impact of EMT in this tumour entity.
In Rhizobium sp. NT-26, an increase in katA mRNA, which encodes a catalase involved in the protection against oxidative stress by scavenging endogenously produced H2O2, was observed in microarray experiments (table 1).
No sequence similarity was detected with mammalian transcripts as checked by BLAST search, and no cross-hybridization was observed in microarray hybridization experiments with RNAs from mammalian tissues (Yadetie et al., in preparation).
Under expression was confirmed for LPAR1, PDK4, RPS6 and SRF (p ≤ 0.05 or p ≤ 0.10), and suggested for PPP1R2B and UCP3, as similar fold-changes were observed in microarray and RT-PCR studies.
Since PA-induced up-regulation of the eukaryotic translation initiation factor 4E binding protein (4E-BP) was observed in microarray analysis, we next confirmed the effect of PA on 4E-BP at the messenger RNA level by quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis.
In addition to this, no significant changes in expression of ACT2 could be observed in the microarray data further demonstrating that the ACT2 expression is unaffected by the PSY1 peptide treatment.
The activity of nucleic acid metabolism due to a high level of cytidylate in the poly(I C) group was easier to be observed in the microarray profile at 7 DPI.
