Interferons in Autoimmune Diseases: Friend or Foe

Interferons (IFNs) are pleotropic cytokines with strong anti-viral and immunomodulatory properties. Their function is dependent to signaling pathway upon binding to IFN receptor. Both pro- and anti-inflammatory effects are seen in interferons-related immune responses. While, interferons are in direct correlation with autoantibodies production during autoimmunity, they have protective effects. This paradoxical role of interferons may impose on immunopathogenesis of autoimmune diseases and selecting appropriate medical strategies. Here, we will review the role of interferons in autoimmune diseases such as giant cell arteritis and describe a general overview on their dual role in autoimmune diseases including, systemic lupus erythematosus, multiple sclerosis, rheumatoid arthritis, and scleroderma.