Scientific article
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English

VEGF-C promotes immune tolerance in B16 melanomas and cross-presentation of tumor antigen by lymph node lymphatics

Published inCell reports, vol. 1, no. 3, p. 191-199
Publication date2012
Abstract

Tumor expression of the lymphangiogenic factor VEGF-C is correlated with metastasis and poor prognosis, and although VEGF-C enhances transport to the draining lymph node (dLN) and antigen exposure to the adaptive immune system, its role in tumor immunity remains unexplored. Here, we demonstrate that VEGF-C promotes immune tolerance in murine melanoma. In B16 F10 melanomas expressing a foreign antigen (OVA), VEGF-C protected tumors against preexisting antitumor immunity and promoted local deletion of OVA-specific CD8(+) T cells. Naive OVA-specific CD8(+) T cells, transferred into tumor-bearing mice, were dysfunctionally activated and apoptotic. Lymphatic endothelial cells (LECs) in dLNs cross-presented OVA, and naive LECs scavenge and cross-present OVA in vitro. Cross-presenting LECs drove the proliferation and apoptosis of OVA-specific CD8(+) T cells ex vivo. Our findings introduce a tumor-promoting role for lymphatics in the tumor and dLN and suggest that lymphatic endothelium in the local microenvironment may be a target for immunomodulation.

Keywords
  • Animals
  • Antigen Presentation/immunology
  • Antigens, Neoplasm/immunology
  • Apoptosis/immunology
  • CD8-Positive T-Lymphocytes/immunology
  • Cancer Vaccines/immunology
  • Cross-Priming/immunology
  • Dendritic Cells/immunology
  • Endothelial Cells/metabolism
  • Histocompatibility Antigens Class I/immunology
  • Immune Tolerance/immunology
  • Lymph Nodes/immunology/pathology
  • Lymphangiogenesis
  • Melanoma, Experimental/immunology/pathology/prevention & control
  • Mice
  • Neoplasm Metastasis
  • Peptides/immunology
  • Stromal Cells/metabolism
  • Vascular Endothelial Growth Factor C/metabolism
Citation (ISO format)
LUND, Amanda W et al. VEGF-C promotes immune tolerance in B16 melanomas and cross-presentation of tumor antigen by lymph node lymphatics. In: Cell reports, 2012, vol. 1, n° 3, p. 191–199. doi: 10.1016/j.celrep.2012.01.005
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Article (Published version)
accessLevelPublic
Identifiers
Journal ISSN2211-1247
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843downloads

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