The level and activity of mature mir122 <i>in vivo</i> is unaffected by Ad5mir122.

<p>Mice were injected with 2×10¹⁰ vp of either Ad5mir122, Ad5WT, an E1A deleted Ad5luc vector or PBS. Quantification of mir122 mature RNA levels was performed using a Taqman microRNA assay specific for mir122. CT values were corrected against the levels of the microRNA, let7a, as a reference gene using the method published by Pfaffl M <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0016152#pone.0016152-Pfaffl1" target="_blank">[25]</a>. A) RT-QPCR for mir122 showing nine superimposed amplification curves (from three mice) in each treatment group, before correction against let7a. Samples were reverse transcribed using equal amounts of total RNA (5 ng) and RT-PCR was performed using equal amounts of cDNA. CT values shown here represent the average of the reactions from three mice plus or minus standard deviation. B) The total number of mRNA changes recorded by genome wide mRNA profiling of extracted murine hepatic RNA. Positive signals are those in which the median mRNA level changed by ≧2-fold from all mice in each group in comparison to median mRNA level in mice treated with PBS (n = 3 for all groups). The total number of genes altered is calculated using the average of the three independent replicates and therefore no error bars are shown. C) Western blot analysis of the mir122 regulated protein Aldolase A in mice treated as above. Liver protein extracts were subjected to a BCA protein assay and equal loading was confirmed by Ponceau stain (data not shown).