FIGURE 7.
VAMP2 silencing does not affect NKCC2 phosphorylation at Ser-126 in TALs. NKCC2 phosphorylation at Ser-126 (pSer-126) was measured with an anti-phospho antibody. Baseline NKCC2 phosphorylation at Ser-126 was undetectable and was not affected by VAMP2 silencing. Stimulation with 100 μm db-cAMP for 20 min enhanced NKCC2 Ser-126 phosphorylation 69 ± 14-fold in control TALs and 73 ± 24-fold in VAMP2-shRNA-transduced TALs. The degree of stimulation by db-cAMP was not statistically significant. Values are expressed as mean -fold increase from vehicle/scrambled shRNA, and error bars represent S.E. *, p < 0.05 versus vehicle (n = 4).