Fig. 2. Knockdown of Rictor blocks MHC class I-induced phosphorylation of ERK at Thr202/Tyr204.
A, EC were transfected with 100 nM Rictor siRNA or GL-2 control siRNA. After 48 h the EC were stimulated with 1 μg/mL anti-MHC class I mAb W6/32 for various time points. EC were lysed and immunoblotted with antibodies to Rictor, Vinculin, ERK Thr202/Tyr204 and ERK. B, EC were transfected with 100 nM Raptor siRNA or GL-2 control siRNA. After 48 h the EC were stimulated with anti-MHC class I mA at various time points. EC were lysed and immunoblotted with antibodies to Raptor, Vinculin, ERK Thr202/Tyr204 and ERK. Densitometry results are expressed as the percentage maximal increase in phosphorylation above control values (mean ±S.E.). Data is representative of three independent experiments.