Ultrasound stimulates focal adhesion formation independently of
syndecan-4 expression. Syndecan-4-/- MEFs were spread on 50K
for 2 h before stimulating with syndecan-4 ligand (H/0) for 40 min either with
(closed bars) or without (open bars) ultrasound for 20 min.
A, representative cells stained for vinculin (green) and
actin (red). Bar, 10 μm. B, 400 cells/condition
were scored for focal adhesion formation. Total focal adhesion area
(C) or total focal adhesion integrated density (D) of 25-35
syndecan-4-/- cells/condition was measured using image J software.
Error bars, S.E.; significance values are as follows: *,
p < 0.05; **, p < 0.01; ***,
p < 0.001. Images and analyses are representative of experiments
performed on at least three separate occasions.