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. 2014 May 20;4:55. doi: 10.3389/fcimb.2014.00055

Figure 1.

Figure 1

Innate signaling cascade in response to Bb Phagocytosis: Monocytes produce IL-12 to activate Th1 cells and IL6 and IL-1β to activate Th17 cells. Monocytes differentiate into macrophages when stimulated with IFN-γ (produced by Th1 cells) and M-CSF (produced by Th17 cells) and differentiate into dendritic cells when stimulated with IL-4 and IFN-γ. M0 macrophages produce IL-18 to activate Th1 cells and IL-6 and IL-1β to activate Th17 cells, as well as several PMN recruitment chemokines. They also differentiate into M1 macrophages when stimulated with GM-CSF and IFN-γ. Dendritic cells produce IL-6, IL-1β, and TGF-β to activate Th17 cells. Th17 cells produce IL-17, which is a strong PMN attractant. Part of images from Motifolio drawing toolkit (www.motifolio.com) were utilized in the figure preparation.