title: Provision of 4-1BB ligand enhances effector and memory CTL responses generated by immunization with dendritic cells expressing a human tumor-associated antigen.
abstract: Up-regulation of receptor-ligand pairs during interaction of an MHC-presented epitope on dendritic cells (DCs) with cognate TCR may amplify, sustain, and drive diversity in the ensuing T cell immune response. Members of the TNF ligand superfamily and the TNFR superfamily contribute to this costimulatory molecule signaling. In this study, we used replication deficient adenoviruses to introduce a model tumor-associated Ag (the E7 oncoprotein of human papillomavirus 16) and the T cell costimulatory molecule 4-1BBL into murine DCs, and monitored the ability of these recombinant DCs to elicit E7-directed T cell responses following immunization. Splenocytes from mice immunized with DCs expressing E7 alone elicited E7-directed effector and memory CTL responses. Coexpression of 4-1BBL in these E7-expressing DCs increased effector and memory CTL responses when they were used for immunization. 4-1BBL expression up-regulated CD80 and CD86 second signaling molecules in DCs. We also report an additive effect of 4-1BBL and receptor activator of NF-kappa B/receptor activator of NF-kappa B ligand coexpression in E7-transduced DC immunogens on E7-directed effector and memory CTL responses and on MHC class II and CD80/86 expression in DCs. Additionally, expression of 4-1BBL in E7-transduced DCs reduced nonspecific T cell activation characteristic of adenovirus vector-associated immunization. The results have generic implications for improved or tumor Ag-expressing DC vaccines by incorporation of exogenous 4-1BBL. There are also specific implications for an improved DC-based vaccine for human papillomavirus 16-associated cervical carcinoma.
authors.affiliation: Department of Molecular Biotechnology, Gesellschaft für Biotechnologische Forschung, Braunschweig, Germany.
authors.forename: Carsten
authors.initials: C
authors.lastname: Wiethe
authors.forename: Kurt
authors.initials: K
authors.lastname: Dittmar
authors.forename: Tracy
authors.initials: T
authors.lastname: Doan
authors.forename: Werner
authors.initials: W
authors.lastname: Lindenmaier
authors.forename: Robert
authors.initials: R
authors.lastname: Tindle
mesh_terms: D053330:4-1BB Ligand; D017500:Adenovirus E1A Proteins / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology; D000260:Adenoviruses, Human / Q000235:genetics / Q000276:immunology; D000276:Adjuvants, Immunologic / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D000595:Amino Acid Sequence; D000818:Animals; D015703:Antigens, CD / Q000096:biosynthesis; D000951:Antigens, Neoplasm / Q000008:administration & dosage / Q000276:immunology*; D018122:B7-1 Antigen / Q000096:biosynthesis; D051940:B7-2 Antigen; D019496:Cancer Vaccines / Q000008:administration & dosage / Q000276:immunology*; D002352:Carrier Proteins / Q000096:biosynthesis / Q000235:genetics; D002452:Cell Count; D002461:Cell Line, Transformed; D003713:Dendritic Cells / Q000276:immunology / Q000378:metabolism / Q000637:transplantation* / Q000821:virology; D005822:Genetic Vectors; D006023:Glycoproteins / Q000096:biosynthesis / Q000235:genetics; D000949:Histocompatibility Antigens Class II / Q000096:biosynthesis; D006801:Humans; D007156:Immunologic Memory / Q000235:genetics; D008024:Ligands; D008213:Lymphocyte Activation / Q000235:genetics; D008562:Membrane Glycoproteins / Q000096:biosynthesis / Q000235:genetics; D051379:Mice; D008805:Mice, Inbred A; D008810:Mice, Inbred C57BL; D008969:Molecular Sequence Data; D053244:Osteoprotegerin; D053245:RANK Ligand; D053246:Receptor Activator of Nuclear Factor-kappa B; D018160:Receptors, Cytoplasmic and Nuclear / Q000096:biosynthesis / Q000235:genetics; D018124:Receptors, Tumor Necrosis Factor; D011995:Recombination, Genetic; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology* / Q000821:virology; D014161:Transduction, Genetic; D014407:Tumor Cells, Cultured; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D015854:Up-Regulation / Q000235:genetics / Q000276:immunology
chemical_list: D053330:4-1BB Ligand; D017500:Adenovirus E1A Proteins; D000276:Adjuvants, Immunologic; D015703:Antigens, CD; D000951:Antigens, Neoplasm; D018122:B7-1 Antigen; D051940:B7-2 Antigen; C497964:CD86 protein, human; D019496:Cancer Vaccines; D002352:Carrier Proteins; C497965:Cd86 protein, mouse; D006023:Glycoproteins; D000949:Histocompatibility Antigens Class II; D008024:Ligands; D008562:Membrane Glycoproteins; D053244:Osteoprotegerin; D053245:RANK Ligand; D053246:Receptor Activator of Nuclear Factor-kappa B; D018160:Receptors, Cytoplasmic and Nuclear; D018124:Receptors, Tumor Necrosis Factor; C505686:TNFRSF11A protein, human; C506030:TNFRSF11B protein, human; C505688:TNFSF11 protein, human; C505974:TNFSF9 protein, human; C505687:Tnfrsf11a protein, mouse; C506031:Tnfrsf11b protein, mouse; C505689:Tnfsf11 protein, mouse; C505975:Tnfsf9 protein, mouse; D014409:Tumor Necrosis Factor-alpha