title: Intranodal immunization with tumor lysate-pulsed dendritic cells enhances protective antitumor immunity.
abstract: We developed a technique for direct inguinal lymph node injection in mice to compare various routes of immunization with tumor lysate-pulsed dendritic cell (DC) vaccines. Syngeneic, bone marrow-derived, tumor lysate-pulsed DCs administered intranodally generated more potent protective antitumor immunity than s.c. or i.v. DC immunizations. Intranodal immunization with ovalbumin peptide-pulsed DCs induced significantly greater antigen-specific T-lymphocyte expansion in the spleen than either s.c. or i.v. immunization. Furthermore, a significantly more potent, antigen-specific TH1-type response to the ovalbumin peptide was induced by intranodal, compared with s.c. or i.v., immunization. Intranodal immunization, designed to enhance DC-T cell interaction in a lymphoid environment, optimizes induction of T lymphocyte-mediated protective antitumor immunity. These results support the use of intranodal immunization as a feasible and effective route of DC vaccine administration.
authors.affiliation: Department of Surgery, Dartmouth Medical School and Norris Cotton Cancer Center, Lebanon, New Hampshire 03756, USA.
authors.forename: L A
authors.initials: LA
authors.lastname: Lambert
authors.forename: G R
authors.initials: GR
authors.lastname: Gibson
authors.forename: M
authors.initials: M
authors.lastname: Maloney
authors.forename: B
authors.initials: B
authors.lastname: Durell
authors.forename: R J
authors.initials: RJ
authors.lastname: Noelle
authors.forename: R J
authors.initials: RJ
authors.lastname: Barth
mesh_terms: D000818:Animals; D015496:CD4-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology; D018414:CD8-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology; D019496:Cancer Vaccines / Q000008:administration & dosage / Q000276:immunology; D003713:Dendritic Cells / Q000276:immunology*; D005260:Female; D007114:Immunization; D008175:Lung Neoplasms / Q000556:secondary; D008198:Lymph Nodes / Q000187:drug effects; D018655:Lymphocyte Count; D008297:Male; D008325:Mammary Neoplasms, Experimental / Q000276:immunology* / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D012513:Sarcoma, Experimental / Q000276:immunology* / Q000473:pathology
chemical_list: D019496:Cancer Vaccines