![]() (B) TaqMan assay analysis for miR669a expression (left panel) and qPCR analysis for MyoD expression (right panel) in wt and Sgcb-null clone after a single infection (LV1) with LV-CMV-eGFP-miR669a2x or multiple infections (LV1a, after double infection; LV1b, after three infections and LV1c after four infections) using the same protocol. MyoD expression decreases in a dose-response manner according to miR669a increment. (C) Immunofluorescence analysis of differentiating Sgcb-null (H4 Ven KO, LV1, LV1a, LV1b and LV1c) and wt (J8 Ven WT)cardiac clones, at 3 and 5 d after serum starvation (2% HS). Skeletal muscle differentiation was impaired by miR669a transduction in dose dependent manner. Note that only few myocytes are present in multiple infected clones compared to controls, after 3 and 5 days from serum starvation; scale bar = 100 μm. |
Figure 1: Dose-response studies on MyoD expression and myogenic differentiation, in miR669a-transfected Sgcb-null cardiac progenitors. |