Figure 7From: Regulation of podosome formation, microglial migration and invasion by Ca2+-signaling molecules expressed in podosomes Inhibition of microglia migration and invasion by blocking CRAC or SK3 channels. Cultured rat microglial cells were exposed for 24 hr to culture medium (MEM with 2% serum) (control), with or without a channel blocker. CRAC blockers were 5 μM Gd3+, 50 μM 2-APB, 10 μM BTP2. SK3 channels were inhibited using 7 μM NS8593. (A) Cell transmigration across 8 μm-diameter holes in the filter of Transwell™ inserts. (B) Migration into a scratch wound made in an essentially confluent layer of microglia. Scale bar, 100 μm. (C) Invasion of microglia through filters with Matrigel™-coated 8 μm-diameter holes (BioCoat Matrigel™ Invasion chambers). For each treatment, cell counts were tallied from five random fields of view at 40× magnification (transmigration, invasion) or 10× (scratch wound), and normalized to control (untreated) microglia (100%, dashed line). The number of individual cultures used is indicated on each bar. ***P < 0.001.Back to article page