Broad-spectrum antibodies against self-antigens and cytokines in RAG deficiency

Jolan E. Walter, Lindsey B. Rosen, Krisztian Csomos, Jacob M. Rosenberg, Divij Mathew, Marton Keszei, Boglarka Ujhazi, Karin Chen, Yu Nee Lee, Irit Tirosh, Kerry Dobbs, Waleed Al-Herz, Morton J. Cowan, Jennifer Puck, Jack J. Bleesing, Michael S. Grimley, Harry Malech, Suk See De Ravin, Andrew R. Gennery, Roshini S. AbrahamAvni Y. Joshi, Thomas G. Boyce, Manish J. Butte, Kari C. Nadeau, Imelda Balboni, Kathleen E. Sullivan, Javeed Akhter, Mehdi Adeli, Reem A. El-Feky, Dalia H. El-Ghoneimy, Ghassan Dbaibo, Rima Wakim, Chiara Azzari, Paolo Palma, Caterina Cancrini, Kelly Capuder, Antonio Condino-Neto, Beatriz T. Costa-Carvalho, Joao Bosco Oliveira, Chaim Roifman, David Buchbinder, Attila Kumanovics, Jose Luis Franco, Tim Niehues, Catharina Schuetz, Taco Kuijpers, Christina Yee, Janet Chou, Michel J. Masaad, Raif Geha, Gulbu Uzel, Rebecca Gelman, Steven M. Holland, Mike Recher, Paul J. Utz, Sarah K. Browne, Luigi D. Notarangelo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Patients with mutations of the recombination-activating genes (RAG) present with diverse clinical phenotypes, including severe combined immune deficiency (SCID), autoimmunity, and inflammation. However, the incidence and extent of immune dysregulation in RAG-dependent immunodeficiency have not been studied in detail. Here, we have demonstrated that patients with hypomorphic RAG mutations, especially those with delayed-onset combined immune deficiency and granulomatous/autoimmune manifestations (CID-G/AI), produce a broad spectrum of autoantibodies. Neutralizing anti-IFN-α or anti-IFN-ω antibodies were present at detectable levels in patients with CID-G/AI who had a history of severe viral infections. As this autoantibody profile is not observed in a wide range of other primary immunodeficiencies, we hypothesized that recurrent or chronic viral infections may precipitate or aggravate immune dysregulation in RAG-deficient hosts. We repeatedly challenged Rag1S723C/S723C mice, which serve as a model of leaky SCID, with agonists of the virus-recognizing receptors TLR3/MDA5, TLR7/-8, and TLR9 and found that this treatment elicits autoantibody production. Altogether, our data demonstrate that immune dysregulation is an integral aspect of RAG-associated immunodeficiency and indicate that environmental triggers may modulate the phenotypic expression of autoimmune manifestations.

Original languageEnglish
Pages (from-to)4135-4148
Number of pages14
JournalJournal of Clinical Investigation
Volume125
Issue number11
DOIs
StatePublished - 2 Nov 2015
Externally publishedYes

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