TABLE 4

IC50 values of YM758 metabolites for the uptake of MPP by hOCT1–3 and rOct1–3 HEK293 cells

IC50 values were estimated from the mean value of MPP uptake in the presence of each compound (n = 3) by nonlinear regression analysis as described under Materials and Methods.


Compounds

IC50
hOCT1
hOCT2
hOCT3
rOct1
rOct2
rOct3
μM
YM-385459 No inhibition No inhibition No inhibition No inhibition No inhibition No inhibition
YM-252124 145 93.9 63.4 41.9 1700 22.7
YM-385461 No inhibition No inhibition No inhibition No inhibition No inhibition No inhibition
AS2036329 No inhibition ∼1000 >100 No inhibition No inhibition No inhibition
YM758
40.5*
456
15.9
23.8*
137
20.4
  • * Data taken from Umehara et al. (2008a).