Analyses of JNK1/2 (pT183/pY185) expression by Human and Mouse Cells.
Human Cells
Panel 1a: Flow cytometric analysis of JNK1/2 (pT183/pY185) expressed by human peripheral blood CD14+ cells. Whole blood cells were prestained with BD Horizon™ V450 Mouse Anti-Human CD14 (Cat. No. 560350/560349) and were then either not stimulated (dashed line histogram) or stimulated (solid line histogram) with PMA (Sigma, Cat. No. P8139; 400 nM), Ionomycin (Sigma, Cat. No. I0634, 250 ng/ml) and LPS (Sigma, Cat. No. L3137, 10 μg/m) at 37˚C for 15 minutes (ie, PMA/Iono/LPS treated). Cells were fixed in 1× BD Phosflow™ Lyse/Fix Buffer (Cat. No. 558049; 10 min, 37˚C) and permeabilized in BD Phosflow™ Perm Buffer III (Cat. No. 558050) on ice (30 min). Cells were then stained with BD Phosflow™ PE Mouse anti-JNK (pT183/pY185) (Cat. No. 562480). Histograms showing JNK1/2 (pT183/pY185) expression were generated for CD14-positive gated events with the forward and side-light scatter characteristics of intact cells using a BD FACSCanto™ II Flow Cytometer System.
Panel 1b: Western blot analysis of JNK1/2 (pT183/pY185) expressed by peripheral blood mononuclear cells (PBMC). Lysates from 1 million untreated (C) and PMA/Iono/LPS-treated (T) PBMC were blotted using Purified Mouse Anti-JNK1/2 (pT183/pY185) antibody (2.0 µg/ml), HRP Goat Anti-Mouse Ig (Cat. No. 554002) and a chemiluminescent detection system. JNK1/2 (pT183/pY185) were identified as ~46 kDa and ~ 54 kDa bands, respectively.
Mouse Cells
Panel 2a: Flow cytometric analysis of JNK1/2 (pT183/pY185) expressed by mouse splenocytes. Splenocytes were either not stimulated (dashed line histogram) or were PMA/Iono/LPS treated (solid line histogram). Cells were fixed, permeabilized, stained and analyzed as described above.
Panel 2b: Western blot analysis of JNK1/2 (pT183/pY185) expressed by mouse splenocytes. Lysates from 1 x 10^6 untreated (C) and PMA/Iono/LPS-treated (T) splenocytes were blotted as described above.