title: Helper roles of NK and CD8+ T cells in the induction of tumor immunity. Polarized dendritic cells as cancer vaccines.
abstract: The work in our laboratory addresses two interrelated areas of dendritic cell (DC) biology: (1) the role of DCs as mediators of feedback interactions between NK cells, CD8+ and CD4+ T cells; and (2) the possibility to use such feedback and the paradigms derived from anti-viral responses, to promote the induction of therapeutic immunity against cancer. We observed that CD8+ T cells and NK cells, the classical "effector" cells, also play "helper" roles, regulating ability of DCs to induce type-1 immune immunity, critical for fighting tumors and intracellular pathogens. Our work aims to delineate which pathways of NK and CD8+ T cell activation result in their helper activity, and to identify the molecular mechanisms allowing them to induce type-1 polarized DCs (DC1s) with selectively enhanced ability to promote type-1 responses and anti-cancer immunity. The results of these studies allowed us and our colleagues to design phase I/II clinical trials incorporating the paradigms of DC polarization and helper activity of effector cells in cancer immunotherapy.
authors.affiliation: Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213-1863, USA. KalinskiP@upmc.edu
authors.forename: Pawel
authors.initials: P
authors.lastname: Kalinski
authors.forename: Yutaro
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Payal
authors.initials: P
authors.lastname: Watchmaker
authors.forename: Adam
authors.initials: A
authors.lastname: Giermasz
authors.forename: Ravikumar
authors.initials: R
authors.lastname: Muthuswamy
authors.forename: Robbie B
authors.initials: RB
authors.lastname: Mailliard
mesh_terms: D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D019496:Cancer Vaccines / Q000276:immunology*; D002450:Cell Communication / Q000276:immunology; D003713:Dendritic Cells / Q000276:immunology*; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D008213:Lymphocyte Activation / Q000276:immunology; D018448:Models, Immunological; D009369:Neoplasms / Q000276:immunology* / Q000628:therapy
chemical_list: D019496:Cancer Vaccines