Effects of protein silencing on tube formation on EA.hy926 cells.
A, 48 h after transfection with siRNA (against STIM1, Orai1, TRPC3, TRPC4, and TRPC5), the EA.hy926 cells were seeded on growth factor-reduced Matrigel and visualized 10–14 h later. B, tube formation was quantified in control condition and upon siRNA treatment. Data are mean ± S.E. (error bars) of three to five independent experiments. *, p < 0.05; ***, p < 0.001. C, cells were seeded on growth factor-reduced Matrigel in control conditions and in the presence of 10 μm TRPC3 inhibitor Pyr3 or 2 μm phospholipase C inhibitor U73122. Scale bars, 200 μm.