Figure 5From: Microglia use multiple mechanisms to mediate interactions with vitronectin; non-essential roles for the highly-expressed αvβ3 and αvβ5 integrins Examination of the role of β1 integrins in mediating microglial adhesion to vitronectin or fibronectin. A. Adhesion to vitronectin or fibronectin of microglia derived from wild-type or β3/β5 integrin DKO mice was examined in the presence of a β1 integrin function-blocking antibody. Adhesion is expressed as the number of cells adherent within a given field of view after 30 minutes of cell adhesion. All points represent the mean ± SEM of three experiments. Note that β1 integrin blockade had no impact on the adhesion of wild-type or β3/β5 integrin DKO microglia to vitronectin, but that it inhibited microglial adhesion to fibronectin by approximately 50% (wild-type) or greater than 80% (DKO). B. Adhesion to fibronectin of microglia derived from wild-type, β3 KO, β5 KO or β3/β5 integrin DKO mice was examined in the presence of a β1 integrin function-blocking antibody. Note that β1 integrin blockade of wild-type or β5 integrin KO microglia resulted in approximately 50% inhibition of adhesion to fibronectin, but in β3 integrin null or DKO microglia, the inhibition was greater than 80%.Back to article page