Fig. 4. Effect of EphB4-Fc and ephrinB2-Fc on lateral 2D migration of HUVECs (A)
and VEGF-stimulated HUVEC chemotaxis (B). (A) EphB4-Fc (1 µg/ml) and VEGF
(50 ng/ml) stimulate lateral EC migration (48 hours). In turn, ephrinB2-Fc (1
µg/ml) inhibits baseline as well as VEGF-induced lateral EC migration
(mean±s.d.; analysis of four independent experiments performed in
triplicates). (B) EphrinB2-Fc (2 µg/ml), but not EphB4-Fc (2 µg/ml),
significantly inhibits VEGF- (20 ng/ml) mediated chemotaxis (4 hours) of
HUVECs in a modified Boyden chamber assay (mean±s.d.; analysis of four
independent experiments performed in triplicates). Control A: medium, upper
and lower compartment; control B: medium, upper compartment, VEGF, lower
compartment. **P<0.01 compared with baseline control;
P<0.05 compared with VEGF induction.