Fig. 6From: TGFβ1-induced hedgehog signaling suppresses the immune response of brain microvascular endothelial cells elicited by meningitic Escherichia coliSchematic representation of the TGFβ1 or SAG immunosuppression effects on BMECs through upregulating miR-155 and negative regulating KRAS as well as downstream ERK1/2 signaling. The exogenous TGFβ1 or SAG triggered the HH signaling in E. coli-infected BMECs and upregulated intracellular miR-155. Further, the promoted miR-155 suppressed the ERK1/2 activation by negatively regulating KRAS, thus decreasing IL-6, MIP-2, and E-selectin expressionBack to article page