AIRE-deficient patients harbor unique high-affinity disease-ameliorating autoantibodies
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Steffen Meyer Martin Woodward Christina Hertel Philip Vlaicu Yasmin Haque Jaanika Kärner Annalisa Macagno Shimobi C Onuoha Dmytro Fishman Hedi Peterson Kaja Metsküla Raivo Uibo Kirsi Jäntti Kati Hokynar Anette SB Wolff APECED patient collaborative Kai Krohn Annamari Ranki Pärt Peterson Kai Kisand Adrian HaydayAbstract
APS1/APECED patients are defined by defects in the autoimmune regulator (AIRE) that mediates central T cell tolerance to many self-antigens. AIRE deficiency also affects B cell tolerance, but this is incompletely understood. Here we show that most APS1/APECED patients displayed B cell autoreactivity toward unique sets of approximately 100 self-proteins. Thereby, autoantibodies from 81 patients collectively detected many thousands of human proteins. The loss of B cell tolerance seemingly occurred during antibody affinity maturation, an obligatorily T cell-dependent step. Consistent with this, many APS1/APECED patients harbored extremely high-affinity, neutralizing autoantibodies, particularly against specific cytokines. Such antibodies were biologically active in vitro and in vivo, and those neutralizing type I interferons (IFNs) showed a striking inverse correlation with type I diabetes, not shown by other anti-cytokine antibodies. Thus, naturally occurring human autoantibodies may actively limit disease and be of therapeutic utility.
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Journal Cell
Volume 166
Issue number 3
Pages 582-595
Available online
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Publisher website (DOI) 10.1016/j.cell.2016.06.024
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Europe PubMed Central 27426947
Pubmed 27426947
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