type I interferons tagged posts

Immunofluorescence imaging of human brain tissue generated from an active lesion from an individual with multiple sclerosis shows astrocytes (blue), the Aryl hydrocarbon receptor (red) and the phosphorylated Signal transducer and activator of transcription 1 (green). Credit: Image courtesy of Jorge Ivan Alvarez, Assistant Professor at the Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.

Bacteria living in the gut may remotely influence the activity of cells in the brain that are involved in controlling inflammation and neurodegeneration...

Oxidized DNA (green) accumulates in the mitochondria (red) of neutrophils isolated from SLE patients.

Baylor Institute for Immunology Research has discovered the neutrophils of systemic lupus erythematosus (SLE) patients release oxidized DNA from their mitochondria that can stimulate an unwanted immune response. The study suggests that targeting the pathways that lead to the accumulation of this DNA and/or facilitate its removal could be new ways to treat this chronic autoimmune disease.

Though the initial trigger for SLE remains unknown, it is characterized by the generation of autoantibodies that recognize the patient’s own DNA or RNA-protein complexes and the excessive production of type I interferons, signaling proteins that activate the body’s immune response...