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Gabrion, Aurélie, MSc; Hmitou, Isabelle, PhD; Moshous, Despina, MD, PhD; Neven, Bénédicte, MD, PhD; Lefèvre-Utile, Alain, MD, MSc; Diana, Jean-Sébastien, MD, MSc; Suarez, Félipe, MD, PhD; Picard, Capucine, MD, PhD; Blanche, Stéphane, MD; Fischer, Alain, MD, PhD; Cavazzana, Marina, MD, PhD; Touzot, Fabien, MD, PhD
Journal of allergy and clinical immunology, 05/2017, Volume: 139, Issue: 5Journal Article
Background Chronic granulomatous disease (CGD) is a primary immunodeficiency caused by defective production of reactive oxygen species in phagocytic cells that results in life-threatening infections and severe inflammatory manifestations. The treatment of inflammatory manifestations remains challenging because it can be associated with an increased risk of infections. Previous studies have shown that phagocytes from patients with CGD display a defect in autophagy and a reactive oxygen species–independent activation of the inflammasome. Objective Because the intersections between autophagy and the inflammasome have been observed in patients with various diseases and microbial infections, we investigated the possible benefit of restoring the autophagy defect through rapamycin, a potent autophagy inducer, in the setting of CGD. Methods We studied 15 patients given a diagnosis of CGD and followed in our institution. All patients were free of any active infection at the time of the study. Results We show that patients with CGD present a consistent inflammatory phenotype defined by (1) increased nonclassical and intermediate monocytes, (2) a proinflammatory state of mononuclear phagocytes with increased IL-1β and TNF-α content, (3) a TH 17 bias of CD4+ T cells, (4) and an increase in IL-17A–secreting neutrophil numbers. We document the reversion of CGD inflammatory status by the mammalian target of rapamycin inhibitor rapamycin on the different immune cell subsets. We also provide evidence for the enhancement of rapamycin's inhibitory effect on IL-1β secretion by the IL-1 receptor antagonist anakinra in phagocytes of patients with CGD. Conclusion Altogether, these data open new therapeutic approaches for CGD-related inflammatory manifestations.
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