SON DNA‐binding protein mediates macrophage autophagy and responses to intracellular infection
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 19, 2020
- Source ID
- 10.1002/1873-3468.13851
Entities
People
- David J Gregory
- Dennis W. Metzger
- Glen M. Deloid
- Igor Kramnik
- Lester Kobzik
- Sharon L. Salmon
Organizations
- Albany Medical College
- Boston University
- Defense Threat Reduction Agency
- Harvard University
- Massachusetts General Hospital
- National Institute of Environmental Health Sciences