FIGURE 3.

Functional characterization of endogenous V2R receptor in HCT8 cells. cAMP levels were evaluated by FRET experiments in HCT8 cells transiently transfected with H96, as described in the Methods section. 5 min of stimulation with 100 nM dDAVP significantly reduced the netFRET signals consistent with a significant increase in the cAMP levels compared with untreated cells. Data are expressed as means ± S.E.M. and analyzed by one-way ANOVA followed by Dunnett’s Multiple Comparison test (*p < 0.05 vs. untreated).