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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Costa, Maria Fernanda Rei, Margarida Grosso, Ana Rita Silva-Santos, Bruno Lança, Telma Penido, Carmen Gonçalves-Sousa, Natacha |
| Description | Country affiliation: Portugal Author Affiliation: Lança T ( Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal.) |
| Abstract | Tumor-infiltrating lymphocytes (TILs) are important prognostic factors in cancer progression and key players in cancer immunotherapy. Although γδ T lymphocytes can target a diversity of tumor cell types, their clinical manipulation is hampered by our limited knowledge of the molecular cues that determine γδ T cell migration toward tumors in vivo. In this study we set out to identify the chemotactic signals that orchestrate tumor infiltration by γδ T cells. We have used the preclinical transplantable B16 melanoma model to profile chemokines in tumor lesions and assess their impact on γδ TIL recruitment in vivo. We show that the inflammatory chemokine CCL2 and its receptor CCR2 are necessary for the accumulation of γδ TILs in B16 lesions, where they produce IFN-γ and display potent cytotoxic functions. Moreover, CCL2 directed γδ T cell migration in vitro toward tumor extracts, which was abrogated by anti-CCL2 neutralizing Abs. Strikingly, the lack of γδ TILs in TCRδ-deficient but also in CCR2-deficient mice enhanced tumor growth in vivo, thus revealing an unanticipated protective role for CCR2/CCL2 through the recruitment of γδ T cells. Importantly, we demonstrate that human Vδ1 T cells, but not their Vδ2 counterparts, express CCR2 and migrate to CCL2, whose expression is strongly deregulated in multiple human tumors of diverse origin, such as lung, prostate, liver, or breast cancer. This work identifies a novel protective role for CCL2/CCR2 in the tumor microenvironment, while opening new perspectives for modulation of human Vδ1 T cells in cancer immunotherapy. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| Journal | The Journal of Immunology |
| Issue Number | 12 |
| Volume Number | 190 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2013-06-15 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Chemokine Ccl2 Immunology Lymphocytes, Tumor-infiltrating Neoplasms, Experimental Receptors, Ccr2 T-lymphocytes, Cytotoxic Animals Flow Cytometry Inflammation Mice Mice, Inbred C57bl Real-time Polymerase Chain Reaction Receptors, Antigen, T-cell, Gamma-delta Signal Transduction T-lymphocyte Subsets Tumor Microenvironment Research Support, Non-u.s. Gov't Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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