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Regulation of innate immunity by signaling pathways emerging from the endoplasmic reticulum.
Current Opinion in Immunology
The innate immune system has evolved the capacity to detect specific pathogens and to interrogate cell and tissue integrity in order to mount an appropriate immune response. Loss of homeostasis in the endoplasmic reticulum (ER) triggers the ER-stress response, a hallmark of many inflammatory and infectious diseases. The IRE1/XBP1 branch of the ER-stress signaling pathway has been recently shown to regulate and be regulated by innate immune signaling pathways in both the presence and absence of ER-stress. By contrast, innate immune pathways negatively affect the activation of two other branches of the ER-stress response as evidenced by reduced expression of the pro-apoptotic transcription factor CHOP. Here we will discuss how innate immune pathways and ER-signaling intersect to regulate the intensity and duration of innate immune responses.
Animals, Endoplasmic Reticulum/immunology, Endoplasmic Reticulum/metabolism, Humans, Immunity, Innate, Protein Unfolding, Receptors, Immunologic/immunology, Signal Transduction, Stress, Physiological
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