For each time point/treatment,four biological replicates, consisting of four individuals each, were
analysed. All reactions were prepared as triplicates and a no-template
control was included for each primer pair. The expression of
three putative reference genes was examined and two with stable
expression in the investigated samples were selected for normalization:
actin and cyclophilin. The PCR program consisted of: 95 C
for 5 min, 45 cycles of 95 C for 10 s, 58 C for 20 s and 72 C for
30 s. A melting curve was performed starting at 95 C for 5 s,
65 C for 5 min and continuously increasing by 0, 11 C/s until the
temperature reached 97 C. To calculate the relative transcript ratio
between a sample and a control, a formula by Pfaffl was used: [(Etarget)DCt,target(controlsample)] [(Eref)DCt,ref(controlsample)], where E is the primer efficiency in the reaction, target is the gene of
interest, ref is the reference gene and DCt is the difference in cycle
number between control and sample when they pass a certain fluorescence
threshold. A standard curve was made for each primer pair
to calculate the efficiency of the primer in the reaction. All primer
sequences are shown in Table S2.