Title: SON DNA-binding protein mediates macrophage autophagy and responses to intracellular infection.
Authors: Gregory, David J; DeLoid, Glen M; Salmon, Sharon L; Metzger, Dennis W; Kramnik, Igor; Kobzik, Lester
Published In FEBS Lett, (2020 09)
Abstract: Intracellular pathogens affect diverse host cellular defence and metabolic pathways. Here, we used infection with Francisella tularensis to identify SON DNA-binding protein as a central determinant of macrophage activities. RNAi knockdown of SON increases survival of human macrophages following F. tularensis infection or inflammasome stimulation. SON is required for macrophage autophagy, interferon response factor 3 expression, type I interferon response and inflammasome-associated readouts. SON knockdown has gene- and stimulus-specific effects on inflammatory gene expression. SON is required for accurate splicing and expression of GBF1, a key mediator of cis-Golgi structure and function. Chemical GBF1 inhibition has similar effects to SON knockdown, suggesting that SON controls macrophage functions at least in part by controlling Golgi-associated processes.
PubMed ID: 32484234
MeSH Terms: No MeSH terms associated with this publication