C1q Inhibits Immune Complex-Induced Interferon-alpha Production in Plasmacytoid Dendritic Cells A Novel Link Between C1q Deficiency and Systemic Lupus Erythematosus Pathogenesis
Objective. C1q deficiency is the strongest risk factor known for the development of systemic lupus erythematosus (SLE), since almost all humans with a genetic deficiency of C1q develop this disease. Low C1q serum concentration is also a typical finding in SLE during flares, emphasizing the involvement of C1q in SLE pathogenesis. Recent studies have revealed that C1q has a regulatory effect on Toll