Figure 5. Down-regulation of SLP-2 prevents sustained T cell signalling.
A) Jurkat T cells were nucleofected with two different sets of siRNA for SLP-2 or control siRNA and used for stimulation with APC and SEE for the indicated times. Cell lysates were prepared and immunoblotted for dually phosphorylated, active ERK-1/-2 (pERKs), total ERK-1/-2 (tERKs), phospho-PLC-γ1, total PLC-γ1, and SLP-2. B) Signals for activated ERK-1/-2 and total ERK were quantified for each group at the indicated time points for three independent experiments and plotted as normalized densitometric units (mean ± s.d.) for active ERK-1/-2. *: p<0.05, **: p<0.01.
