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. 2011 Dec 8;18(5):265–279. doi: 10.1093/molehr/gar078

Figure 9.

Figure 9

siRNA knockdown of PKN1 and PKN2 in cultured myometrial cells has no effect on MYL or MYPT1 phosphorylation. Sub-confluent myometrial cells were transfected with 25 nM siRNA targeted for PKN1 (P1), PKN2 (P2), both (P1/P2) or non-targeting (scr) and grown for a further 72 h. (A) Cell lysates were subjected to immunoblotting for PKN1, PKN2, total and phosphorylated MYL and MYPT1, representative blots are shown. Signals from the phospho-specific antibody when used were normalized to those obtained from the associated total antibody, and data were expressed as a percentage of the non-transfected value. (B) PKN1 levels; (C) PKN2 levels; (D) ppMYL (Thr18/Ser19) levels; (E) pMYL (Ser19) levels; (F) pMYPT1 (Thr853) levels and (G) pMYPT1 (Thr696) levels. Bars represent mean + SEM, n = 6. Statistical significance was determined using one-way ANOVA and Dunnett's post hoc test; **P < 0.01 compared with non-transfected cells.