V. S. Zimmermann
Tumors hamper the immunogenic competence of CD4+T cell-directed dendritic cell vaccination
Zimmermann, V. S.; Casati, A.; Schiering, C.; Caserta, S.; Hess Michelini, R.; Basso, V.; Mondino, A.
Authors
A. Casati
C. Schiering
Dr Stefano Caserta S.Caserta@hull.ac.uk
Lecturer in Immunology
R. Hess Michelini
V. Basso
A. Mondino
Abstract
Dendritic cells loaded with tumor-derived peptides induce protective CTL responses and are under evaluation in clinical trails. We report in this study that prophylactic administration of dendritic cells loaded with a MHC class II-restricted peptide derived from a model tumor Ag (Leishmania receptor for activated C kinase (LACK)) confers protection against LACK-expressing TS/A tumors, whereas therapeutic vaccination fails to cure tumor-bearing mice. Although CD4 + T cell-directed dendritic cell vaccination primed effector-like (CD44 high CD62L low , IL-2 + , IFN-γ + ) and central memory-like lymphocytes (CD44 high CD62L high , only IL-2 + ) in tumor-free mice, this was not the case in tumor-bearing animals in which both priming and persistence of CD4 + T cell memory were suppressed. Suppression was specific for the tumor-associated Ag LACK, and did not depend on CD25 + T cells. Because T cell help is needed for protective immunity, we speculate that the ability of tumors to limit vaccine-induced CD4 + T cell memory could provide a partial explanation for the limited efficacy of current strategies.
Citation
Zimmermann, V. S., Casati, A., Schiering, C., Caserta, S., Hess Michelini, R., Basso, V., & Mondino, A. (2007). Tumors hamper the immunogenic competence of CD4+T cell-directed dendritic cell vaccination. Journal of Immunology, 179(5), 2899-2909. https://doi.org/10.4049/jimmunol.179.5.2899
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 21, 2007 |
Online Publication Date | Aug 20, 2007 |
Publication Date | Sep 1, 2007 |
Deposit Date | Jun 28, 2018 |
Journal | Journal of Immunology |
Print ISSN | 0022-1767 |
Electronic ISSN | 1550-6606 |
Publisher | American Association of Immunologists |
Peer Reviewed | Peer Reviewed |
Volume | 179 |
Issue | 5 |
Pages | 2899-2909 |
DOI | https://doi.org/10.4049/jimmunol.179.5.2899 |
Public URL | https://hull-repository.worktribe.com/output/620585 |
Publisher URL | http://www.jimmunol.org/content/179/5/2899 |
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