Figure 6.
Stabilization of 5΄ phosphate increases duration of effect and corresponding tissue accumulation of hsiRNA in vivo. (A) Column scatter plots showing Ppib mRNA levels in the livers and kidneys of mice (n = 5 per group) at the indicated times after subcutaneous injection of PBS or 5΄-OH or 5΄-VP hsiRNAs. mRNA levels measured by QuantiGene® assay were normalized to Hprt mRNA and expressed as a percent of mRNA levels in PBS-treated animals. Significance calculated by ANOVA with Bonferroni΄ s correction, significance was calculated in comparison to PBS-treated animals: *P ≤ 0.05; **P ≤ 0.01; ***P ≤ 0.001 and ****P ≤ 0.0001. Mean ± SD. (B) Bar graphs showing the concentration of 5΄-OH and 5΄-VP hsiRNA guide strands in liver and kidney, as measured by the PNA-based hybridization assay at the indicated time points after subcutaneous injection. Mean ± SD, N = 50.