Chapter III. Re-establishing Tolerance

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Rev Diabet Stud, 2012, 9(4):328-337 DOI 10.1900/RDS.2012.9.328

Clinical Potential of Antigen-Specific Therapies in Type 1 Diabetes

Ken T. Coppieters1, Birgit Sehested Hansen2, Matthias G. von Herrath1,3

1Type 1 Diabetes R&D Center, Novo Nordisk Inc., Seattle, WA, USA
2Clinical Pharmacology, Novo Nordisk A/S, Søborg, Denmark
3La Jolla Institute for Allergy and Immunology, La Jolla, CA, USA
Address correspondence to: Matthias G. von Herrath, e-mail:

Manuscript submitted December 18, 2012; resubmitted January 21, 2013; accepted February 8, 2013.

Keywords: type 1 diabetes, immune tolerance, HSP60, DiaPep277, oral antigen, nasal antigen, regulatory T cell


In type 1 diabetes (T1D), pancreatic beta-cells are attacked and destroyed by the immune system, which leads to a loss of endogenous insulin secretion. The desirable outcome of therapeutic intervention in autoimmune diseases is the restoration of immune tolerance to prevent organ damage. Past trials with immune suppressive drugs highlight the fact that T1D is in principle a curable condition. However, the barrier in T1D therapy in terms of drug safety is set particularly high because of the predominantly young population and the good prognosis associated with modern exogenous insulin therapy. Thus, there is a general consensus that chronic immune suppression is associated with unacceptable long-term safety risks. On the other hand, immune-modulatory biologicals have recently failed to confer significant protection in phase 3 clinical trials. However, the concept of antigen-specific tolerization may offer a unique strategy to safely induce long-term protection against T1D. In this review, we analyze the potential reasons for the failure of the different tolerization therapies, and describe how the concept of antigen-specific toleraization may overcome the obstacles associated with clinical therapy in T1D.

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