Ulipristal acetate regulates solute transporter proteins in 3D myometrial and
leiomyoma cells. A, Western blot analysis of myometrial cells exposed to UPA show
only a slight increase in AKR1B1 protein at the lowest concentration of
10−10 M (1.34 ± 0.08-fold) when compared to placebo myometrial cells.
Higher concentrations of UPA show no change in AKR1B1 expression in these cells from
placebo controls. B, Western blot analysis of leiomyoma cells treated with UPA show
a decrease in the expression of AKR1B1 at all concentrations: 10−10 M
(0.72 ± 0.07-fold), 10−9 M (0.63 ± 0.09-fold), and 10−8 M
(0.69 ± 0.07-fold) evaluated. C, Western blot analysis of 3D leiomyoma cells
demonstrate a decrease in the expression of SLC5A3 protein at 10−8 M
(0.74 ± 0.01), 10−7 M (0.66 ± 0.02), and 10−6 M (0.67 ± 0.05)
compared to placebo myometrium, when exposed to UPA treatment (*P
< .05). D, Western blot analysis of leiomyoma cells treated with UPA demonstrate
a maximally 1.34-fold decrease in the expression of SLC5A3 protein for all
concentrations of UPA: 10−10 M (0.80 ± 0.12), 10−9 M (0.84 ±
0.01), 10−8 M (0.83 ± 0.12), and 10−7 M (0.74 ± 0.02)
evaluated, that was not concentration dependent. AKR1B1 indicates aldo-keto
reductase family 1 member B1; SLC5A3, solute carrier family 5 member 3; UPA,
ulipristal acetate.