Differential remodeling of the electron transport chain is required to support TLR3 and TLR4 signaling and cytokine production in macrophages.

ABSTRACT: Increasing evidence suggests that mitochondria play a critical role in driving innate immune responses against bacteria and viruses. However, it is unclear if differential reprogramming of mitochondrial function contributes to the fine tuning of pathogen specific immune responses. Here, we found that TLR3 and TLR4 engagement on murine bone marrow derived macrophages was associated with differential remodeling of electron transport chain complex expression. This remodeling was associated with differential accumulation of mitochondrial and cytosolic ROS, which were required to support ligand specific inflammatory and antiviral cytokine production. We also found that the magnitude of TLR3, but not TLR4, responses were modulated by glucose availability. Under conditions of low glucose, TLR3 en

SUBMITTER: Ahmed D 

PROVIDER: S-EPMC6906364 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature