Cross-presentation of tumor antigens by bone marrow-derived antigen-presenting cells is the dominant mechanism in the induction of T-cell tolerance during B-cell lymphoma progression

Eduardo M. Sotomayor, Ivan Borrello, Frédérique Marie Rattis, Alex G. Cuenca, Jacob Abrams, Kevin Staveley-O'Carroll, Hyam I. Levitsky

Research output: Contribution to journalArticle


Tumor antigen-specific T-cell tolerance may limit the efficacy of therapeutic cancer vaccines. Direct presentation of antigens by tumor cells incapable of providing adequate costimulation to tumor-specific T cells has been suggested as the basis for this unresponsiveness. Using parent-into-F1 bone marrow (BM) chimeras, this study unambiguously demonstrates that the induction of this tolerant state requires T-cell recognition of tumor antigen presented by BM-derived antigen-presenting cells (APCs), not tumor cells themselves. In the absence of host APC presentation, tumor-specific T cells remained functional, even in the setting of antigen expressed by B-cell lymphomas residing in secondary lymphoid tissues. The intrinsic APC capacity of tumor cells has therefore little influence over T-cell priming versus tolerance, a decision that is regulated at the level of host APCs.

Original languageEnglish (US)
Pages (from-to)1070-1077
Number of pages8
Issue number4
StatePublished - Aug 15 2001


ASJC Scopus subject areas

  • Biochemistry
  • Immunology
  • Hematology
  • Cell Biology

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