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- W2589848343 abstract "Rheumatoid arthritis (RA) is a debilitating inflammatory autoimmune disease with no known cure. Recently, we identified the immunomodulatory enzyme indoleamine-2,3-dioxygenase 2 (IDO2) as an essential mediator of autoreactive B and T cell responses driving RA. However, therapeutically targeting IDO2 has been challenging given the lack of small molecules that specifically inhibit IDO2 without also affecting the closely related IDO1. In this study, we develop a novel monoclonal antibody (mAb)-based approach to therapeutically target IDO2. Treatment with IDO2-specific mAb alleviated arthritis in two independent preclinical arthritis models, reducing autoreactive T and B cell activation and recapitulating the strong anti-arthritic effect of genetic IDO2 deficiency. Mechanistic investigations identified FcγRIIb as necessary for mAb internalization, allowing targeting of an intracellular antigen traditionally considered inaccessible to mAb therapy. Taken together, our results offer preclinical proof of concept for antibody-mediated targeting of IDO2 as a new therapeutic strategy to treat RA and other autoantibody-mediated diseases." @default.
- W2589848343 created "2017-03-03" @default.
- W2589848343 creator A5020071542 @default.
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- W2589848343 date "2017-06-01" @default.
- W2589848343 modified "2023-09-26" @default.
- W2589848343 title "Therapeutic antibody targeting of indoleamine-2,3-dioxygenase (IDO2) inhibits autoimmune arthritis" @default.
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- W2589848343 doi "https://doi.org/10.1016/j.clim.2017.01.016" @default.
- W2589848343 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5466478" @default.