Effects of Cav-1 silencing in U2-OS cells.
A, Caveolin 1 was silenced in U2-OS by transient transfection of specific siRNA. The protein expression was reduced by 70% compared with cells not transfected or transfected with unrelated siRNA (Neg siRNA). GR expression was not affected by the treatment. = Not transfected; = Neg siRNA; = Cav-1 siRNA. B, Representative pictures of GR/Cav-1 heterodimers in U2-OS transiently transfected for 48 h and 72 h with either Cav-1 siRNA or Neg siRNA. C, GR/Cav-1 dimers, expressed in average PLA signals per cell, were significantly reduced on siRNA transfection at both 48 h and 72 h. = Neg siRNA 48 h; = Cav-1 siRNA 48 h; = Neg siRNA 72 h; = Cav-1 siRNA 72 h. D, Modulation of HADH and CoxVb by Cort-BSA in U2-OS cells transfected with either Neg siRNA (), or Cav-1 siRNA (). * p < 0.05, ** p < 0.01.