FIG 7.
Schematic representation of the putative role of RgpA in the regulation of LPS signaling in gingival keratinocytes. RgpA secreted by P. gingivalis penetrates into the cytoplasm, degrades MCPIP-1, and sensitizes epithelial cells to endotoxins and to both commensal and pathogenic species. Additionally, the released cytokines activate a proinflammatory signaling cascade via the autocrine pathway, leading to exacerbation of the local inflammatory reaction.
