Denileukin diftitox (ONTAK) induces a tolerogenic phenotype in dendritic cells and stimulates survival of resting Treg

Author:

Baur Andreas S.12,Lutz Manfred B.3,Schierer Stephan1,Beltrame Luca4,Theiner Gabi1,Zinser Elisabeth5,Ostalecki Christian1,Heidkamp Gordon1,Haendle Ina1,Erdmann Michael1,Wiesinger Manuel1,Leisgang Waltraud1,Gross Stefanie1,Pommer Ansgar J.1,Kämpgen Eckhart1,Dudziak Diana1,Steinkasserer Alexander5,Cavalieri Duccio6,Schuler-Thurner Beatrice1,Schuler Gerold1

Affiliation:

1. Department of Dermatology, University Hospital Erlangen, Erlangen, Germany;

2. Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL;

3. Institute of Virology and Immunobiology, University of Würzburg, Würzburg, Germany;

4. Translational Genomics Unit, Department of Oncology, “Mario Negri” Pharmacological Research Institute, Milano, Italy;

5. Department of Immune-Modulation, University Hospital Erlangen, Erlangen, Germany; and

6. Department of Pharmacology, University of Firenze, Firenze, Italy

Abstract

Key Points ONTAK blocks DC maturation by coreceptor downmodulation and inhibition of Stat3 phosphorylation to induce a tolerogenic phenotype. ONTAK kills activated CD4 T cells but stimulates antiapoptosis in resting Treg by engagement and stimulation through CD25.

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

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