Fig.Figure 5(A) Co-expressing myc-Tau and eGFP-β-catenin increased nuclear translocation of β-catenin, while co-expressing myc-Tau and eGFP-β-cat K49R abolished the nuclear translocation of β-catenin in HEK293 cells. The nuclei were stained using DAPI (n=3 from three independent experiments, scale bar, 5 μm). Expressing β-cat K49Q increased its nuclear translocation. HEK293 cells were transfected with eGFP-β-cat WT or K49Q for 48 h, and then β-cat protein level in different fractions was measured by Western blotting Expressing β-cat K49Q increased its nuclear translocation. HEK293 cells were transfected with eGFP-β-cat WT or K49Q for 48 h, and then β-cat protein level in different fractions was measured by Western blotting Data information: Data are expressed as mean ± SEM, *, P<0.05; **, P<0.01, ***, P<0.001 vs β-cat WT (C) Data were analyzed by Student's t test Expressing β-cat K49Q increased its nuclear translocation. HEK293 cells were transfected with eGFP-β-cat WT or K49Q for 48 h and immunofluorescent labeling using a laser scanning confocal microscope (D). The nuclei (blue) was stained by DAPI (n=3 from three independent experiments, scale bar, 2 μm). (E) Expressing β-cat K49Q further increased its transcription activity measured by dual Topflash/Fopflash reporter luciferase assay after transient transfection of β-cat WT, or K49Q, or Vec in HEK293 cells for 48 h, and the luciferase activity was normalized by β-cat WT or K49Q protein level (n=7 biological replicates each group). Data information: Data are expressed as mean ± SEM, *, P<0.05; **, P<0.01, ***, P<0.001 vs Vec ; ##, P<0.01, ###, P<0.001 vs β-cat WT Data were analyzed by one-way ANOVA (F) Expressing Tau-k18(-) abolished Tau-induced upregulation of mRNA levels of survival genes (bcl2 and survivin) and dkk1 (downstream of Wnt signaling) in N2a cells measured by Q-PCR (n=6~9 biological replicates each group). Data information: Data are expressed as mean ± SEM, *, P<0.05; **, P<0.01, ***, P<0.001 vs Tau (F Data were analyzed by one-way ANOVA (G) Expressing Tau-k18(-) or Tau-2CA abolished Tau-induced Wnt/β-catenin transcriptional activation measured by dual reporter luciferase activity assay in HEK293 cells (n=7 biological replicates each group). Data information: Data are expressed as mean ± SEM, *, P<0.05; **, P<0.01, ***, P<0.001 vs vs Tau Data were analyzed by one-way ANOVA (H) Expressing phosphor-mimic TauS199E (TauS199E) further increased the transcription activity of Wnt/TCF/LEF1 by Tau in HEK293 cells (n=7 biological replicates each group). Data information: Data are expressed as mean ± SEM, *, P<0.05; **, P<0.01, ***, P<0.001 vs Vec ; ##, P<0.01, ###, P<0.001 vs Tau (H). Data were analyzed by , one-way ANOVA The increased mRNA levels of bcl2, survivin and dkk1 in the AD brains compared with the age-/sex-matched controls detected by Q-PCR (n=7 each group) Data information: Data are expressed as mean ± SEM, *, P<0.05; **, P<0.01, ***, P<0.001 vs Ctrl (I) Data were analyzed by Student's t test The increased mRNA levels of bcl2, survivin and dkk1 in the AD brains compared with the age-/sex-matched controls detected by Q-PCR (n=7 each group), and the positive correlations with the increased K49-acetylated β-catenin (see Fig. 1I, J) analyzed by Pearson analysis.