• Mickaël Terme, Mylène Dorvillius, Denis Cochonneau, Tanguy Chaumette, Wenhua Xiao, Mitchell B Diccianni, Jacques Barbet, Alice L Yu, François Paris, Linda S Sorkin, and Stéphane Birklé.
• ATLAB Pharma, Institut de Recherche en Santé de l'Université de Nantes, Nantes, France ; INSERM U.892, Centre de Recherche en Cancérologie de Nantes-Angers, Institut de Recherche en Santé de l'Université de Nantes, Nantes, France ; CNRS 6299, Centre de Recherche en Cancérologie de Nantes-Angers, Institut de Recherche en Santé de l'Université de Nantes, Nantes, France.
• Plos One. 2014 Jan 1;9(2):e87210.

BackgroundAnti-GD2 antibody is a proven therapy for GD2-positive neuroblastoma. Monoclonal antibodies against GD2, such as chimeric mAb ch14.18, have become benchmarks for neuroblastoma therapies. Pain, however, can limit immunotherapy with anti-GD2 therapeutic antibodies like ch14.18. This adverse effect is attributed to acute inflammation via complement activation on GD2-expressing nerves. Thus, new strategies are needed for the development of treatment intensification strategies to improve the outcome of these patients.Methodology/Principal FindingsWe established the mouse-human chimeric antibody c.8B6 specific to OAcGD2 in order to reduce potential immunogenicity in patients and to fill the need for a selective agent that can kill neuroblastoma cells without inducing adverse neurological side effects caused by anti-GD2 antibody immunotherapy. We further analyzed some of its functional properties compared with anti-GD2 ch14.18 therapeutic antibody. With the exception of allodynic activity, we found that antibody c.8B6 shares the same anti-neuroblastoma attributes as therapeutic ch14.18 anti-GD2 mAb when tested in cell-based assay and in vivo in an animal model.Conclusion/SignificanceThe absence of OAcGD2 expression on nerve fibers and the lack of allodynic properties of c.8B6-which are believed to play a major role in mediating anti-GD2 mAb dose-limiting side effects-provide an important rationale for the clinical application of c.8B6 in patients with high-risk neuroblastoma.

26 keywords...

hide…