Figure 3.
FTY720-P inhibits class I HDACs. (a–d) HDAC activities of recombinant class I HDACs (HDAC1, 2, 3 and 8) and (e) class II HDAC (HDAC7) were measured in the presence of vehicle, S1P (5 μM), FTY720-P (0.5 or 5 μM), FTY720 (5 μM) or SAHA (2 μM). Data are averages of triplicate determinations ±s.d. and expressed as arbitrary fluorescence units (AFU). *P < 0.0001 as compared to vehicle (N = 3 independent samples per group); one-way ANOVA with Bonferroni multiple-comparisons test. Insets, proteins analyzed by western blotting with HDAC-specific antibodies.