Fig. 3.
Six1 overexpression in HKc/DR increases the expression of TGF-β receptors. (A) Levels of mRNA expression of TGF-β receptors TβRI, TβRII and TβRIII were determined by real-time PCR in HKc/DR-Ctrl (DR-Ctrl) and HKc/DR-Six1 (DR-Six1). Data were normalized to β-actin expression. Bars indicate standard deviation, and ***indicates statistically significant P values ≤ 0.001. (B) (Left panel) Western blot analysis of TβRI, TβRII and TβRIII in HKc/DR-Ctrl (DR-Ctrl) and HKc/DR-Six1 (DR-Six1). β-Actin was used as control for equal protein loading. Right panels: immunofluorescent staining of TβRI, TβRII and TβRIII (red) in HKc/DR-Ctrl (DR-Ctrl) and HKc/DR-Six1 (DR-Six1). Nuclei were stained with 4′,6-diamidino-2-phenylindole (blue). Images are shown at ×630 magnification.