Inhibition of phosphatidylserine recognition heightens the immunogenicity of irradiated lymphoma cells in vivo

Attilio Bondanza, Valérie S. Zimmermann, Patrizia Rovere-Querini, Javier Turnay, Ingrid E. Dumitriu, Christian M. Stach, Reinhard E. Voll, Udo S. Gaipl, Wolf Bertling, Ernst Pöschl, Joachim R. Kalden, Angelo A. Manfredi, Martin Herrmann

Research output: Contribution to journalArticle

Abstract

Strategies to enhance the immunogenicity of tumors are urgently needed. Although vaccination with irradiated dying lymphoma cells recruits a tumor-specific immune response, its efficiency as immunogen is poor. Annexin V (AxV) binds with high affinity to phosphatidylserine on the surface of apoptotic and necrotic cells and thereby impairs their uptake by macrophages. Here, we report that AxV preferentially targets irradiated lymphoma cells to CD8 + dendritic cells for in vivo clearance, elicits the release of proinflammatory cytokines and dramatically enhances the protection elicited against the tumor. The response was endowed with both memory, because protected animals rejected living lymphoma cells after 72 d, and specificity, because vaccinated animals failed to reject unrelated neoplasms. Finally, AxV-coupled irradiated cells induced the regression of growing tumors. These data indicate that endogenous adjuvants that bind to dying tumor cells can be exploited to target tumors for immune rejection.

Original languageEnglish
Pages (from-to)1157-1165
Number of pages9
JournalJournal of Experimental Medicine
Volume200
Issue number9
DOIs
Publication statusPublished - Nov 1 2004

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Keywords

  • Adjuvants
  • Apoptosis
  • Cancer
  • Dendritic cells
  • Phagocytosis

ASJC Scopus subject areas

  • Immunology

Cite this

Bondanza, A., Zimmermann, V. S., Rovere-Querini, P., Turnay, J., Dumitriu, I. E., Stach, C. M., Voll, R. E., Gaipl, U. S., Bertling, W., Pöschl, E., Kalden, J. R., Manfredi, A. A., & Herrmann, M. (2004). Inhibition of phosphatidylserine recognition heightens the immunogenicity of irradiated lymphoma cells in vivo. Journal of Experimental Medicine, 200(9), 1157-1165. https://doi.org/10.1084/jem.20040327