Figure 8.
Muscle-specific knockdown of BAF promotes increased DNA content in myonuclei. Representative image of muscle 7 of control (Mef2-GAL4/yw, A–C) or after muscle-specific knockdown of BAF (Mef2-GAL4>BAF RNAi, D–F), labeled with phalloidin (red, A and D), lamin C (green, A and D; white, B and E) and Hoechst (blue, A and D; white, C and F). (G) Quantification of Hoechst integrated density (averaged per myofiber) in the two groups indicates a significant increase of Hoechst integrated density after knockdown of BAF (***, P = 0.0001; control, n = 13; BAF RNAi, n = 15). (H) Quantification of lamin C integrated density (averaged per myofiber) in the two groups indicates a significant increase of lamin C fluorescence after knockdown of BAF (****, P = 7.4 × 10−6; control, n = 13; BAF RNAi, n = 15). Whiskers extend to data points less than 1.5 interquartile ranges from the first and third quartiles. Bar, 10 µm.