Effect of miRNAs on endogenous GHR mRNA and protein in HEK293 cells. A, Expression of human total GHR mRNA in HEK293 cells transfected with 50nM miR-129–5p, miR-142–3p, miR-202, and miR-16 mimics. The data are presented as mean ± SE of 3 individual experiments for all but miR-142–3p (n = 5); duplicates were assayed within each experiment. Statistically significant differences between the negative control and miR-treated cells were found for miR-129–5p, miR-142–3p, miR-202 (***, P ≤ .001) and miR-16 (*, P ≤ .05). B, Composite results for n = 4 individual experiments (mean ± SE) showing statistically significant differences between negative control and miR-treated cells: ***, P ≤ .001 for all treatments. C, Representative Western blot of GHR and calnexin protein levels in HEK293 cells after transfections with 50nM miR-129–5p, miR-142–3p, miR-202, and miR-16 mimics.