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© Christine Schmitt, Meriem El Ghachi, Jean-Marc Panaud
Bactérie Helicobacter pylori en microscopie électronique à balayage. Agent causal de pathologies de l'estomac : elle est responsable des gastrites chroniques, d'ulcères gastriques et duodénaux et elle joue un rôle important dans la genèse des cancers gastriques (adénocarcinomes et lymphomes).
Publication : Cancer research

Fine-Tuning Cancer Immunotherapy: Optimizing the Gut Microbiome

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Cancer research - 29 Jul 2016

Pitt JM, Vétizou M, Waldschmitt N, Kroemer G, Chamaillard M, Boneca IG, Zitvogel L

Link to Pubmed [PMID] – 27474734

Cancer Res. 2016 Aug;76(16):4602-7

The equilibrium linking the intestinal microbiota, the intestinal epithelium, and the host immune system establishes host health and homeostasis, with perturbations of this balance resulting in chronic inflammatory and autoimmune immunopathologies. The mutualistic symbiosis between gut microbiota and host immunity raises the possibility that dysbiosis of the intestinal content also influences the outcome of cancer immunotherapy. Here, we present our recent findings that specific gut-resident bacteria determine the immunotherapeutic responses associated with CTLA-4 checkpoint blockade. This new evidence hints that interindividual differences in the microbiome may account for the significant heterogeneity in therapeutic and immunopathologic responses to immune checkpoint therapies. We discuss how this new understanding could improve the therapeutic coverage of immune checkpoint inhibitors, and potentially limit their immune-mediated toxicity, through the use of adjunctive “oncomicrobiotics” that indirectly promote beneficial immune responses through optimizing the gut microbiome. Cancer Res; 76(16); 4602-7. ©2016 AACR.

https://www.ncbi.nlm.nih.gov/pubmed/27474734