FIGURE 5.
Knocking down μ-calpain in FA-A cells by siRNA restores levels of αIISp to those found in normal cells. (A) FA-A cells were transiently transfected with 200, 240 or 300 pM μ-calpain siRNA or nontarget (Nt) siRNA. 48 hours after transfection, levels of μ-calpain and αIISp in the FA-A and normal cells were examined by western blot analysis. Immunoblots were probed with anti-μ-calpain and anti-αIISp. Tubulin (*) was used as a loading control. (B) Immunoblots were scanned and levels of μ-calpain and αIISp quantitated. Vertical lines represent ± s.e.m. for 5–8 experiments.