Figure 5. S1P and FTY720, but not Tys, induce internalization of S1PR1.
Confluent HLMVEC grown on glass bottom culture dishes were stimulated with vehicle control, Tys, FTY720, or S1P (1 µM) for 2 h. Cells were then fixed and immunostained with S1PR1 antibody per standard protocol. Arrows indicate that S1PR1 localizes to the cell periphery in control and Tys-treated cells, while S1P and FTY720 induce internalization of the receptor. Representative figures from 3 independent experiments are shown.
