Fig. 5: Inhibition of HIF-1α attenuates OS cell invasion and angiogenesis.

a HIF-1α expression levels in OS cells (143B and U2OS) transfected with HIF-1α siRNAs (si HIF-1α) were detected by qRT-PCR and western blots. b, c HIF-1α knockdown inhibited OS cell migration (Scale bar = 50 μm), HUVECs angiogenesis (Scale bar = 100 μm), and proliferation. d HIF-1α knockdown inhibited OS cell proliferation. **P < 0.01; ***P < 0.001