Publications
2009
Flacher Vincent, Sparber Florian, Tripp Christoph H, Romani Nikolaus, Stoitzner Patrizia
Targeting of epidermal Langerhans cells with antigenic proteins: attempts to harness their properties for immunotherapy Article de journal
Dans: Cancer immunology, immunotherapy: CII, vol. 58, no. 7, p. 1137–1147, 2009, ISSN: 1432-0851.
Résumé | Liens | BibTeX | Étiquettes: Active, Animals, Antibodies, antibody, Antigen, Antigens, BLOOD, C-Type, cancer, CD, CD4-Positive T-Lymphocytes, CD4+ T cells, CD8-Positive T-Lymphocytes, CD8+ T cells, Dendritic Cells, DERMATOLOGY, DERMIS, Epidermis, Growth, Human, Humans, immune response, IMMUNE-RESPONSES, Immunization, Immunology, Immunotherapy, in situ, In vivo, Inbred BALB C, Inbred C57BL, INDUCTION, Langerhans Cells, LECTIN, Lectins, LYMPH, LYMPH NODE, Lymph Nodes, Major Histocompatibility Complex, Mannose-Binding Lectins, metabolism, methods, MHC class I, MHC class I molecules, Mice, Neoplasm, Neoplasms, OVALBUMIN, Patients, PROGENITORS, Protein, Proteins, RESPONSES, review, Skin, T CELLS, T-CELLS, Team-Mueller, therapy, tumor
@article{flacher_targeting_2009,
title = {Targeting of epidermal Langerhans cells with antigenic proteins: attempts to harness their properties for immunotherapy},
author = {Vincent Flacher and Florian Sparber and Christoph H Tripp and Nikolaus Romani and Patrizia Stoitzner},
doi = {10.1007/s00262-008-0563-9},
issn = {1432-0851},
year = {2009},
date = {2009-07-01},
journal = {Cancer immunology, immunotherapy: CII},
volume = {58},
number = {7},
pages = {1137--1147},
abstract = {Langerhans cells, a subset of skin dendritic cells in the epidermis, survey peripheral tissue for invading pathogens. In recent functional studies it was proven that Langerhans cells can present exogenous antigen not merely on major histocompatibility complexes (MHC)-class II molecules to CD4+ T cells, but also on MHC-class I molecules to CD8+ T cells. Immune responses against topically applied antigen could be measured in skin-draining lymph nodes. Skin barrier disruption or co-application of adjuvants was required for maximal induction of T cell responses. Cytotoxic T cells induced by topically applied antigen inhibited tumor growth in vivo, thus underlining the potential of Langerhans cells for immunotherapy. Here we review recent work and report novel observations relating to the potential use of Langerhans cells for immunotherapy. We investigated the potential of epicutaneous immunization strategies in which resident skin dendritic cells are loaded with tumor antigen in situ. This contrasts with current clinical approaches, where dendritic cells generated from progenitors in blood are loaded with tumor antigen ex vivo before injection into cancer patients. In the current study, we applied either fluorescently labeled protein antigen or targeting antibodies against DEC-205/CD205 and langerin/CD207 topically onto barrier-disrupted skin and examined antigen capture and transport by Langerhans cells. Protein antigen could be detected in Langerhans cells in situ, and they were the main skin dendritic cell subset transporting antigen during emigration from skin explants. Potent in vivo proliferative responses of CD4+ and CD8+ T cells were measured after epicutaneous immunization with low amounts of protein antigen. Targeting antibodies were mainly transported by langerin+ migratory dendritic cells of which the majority represented migratory Langerhans cells and a smaller subset the new langerin+ dermal dendritic cell population located in the upper dermis. The preferential capture of topically applied antigen by Langerhans cells and their ability to induce potent CD4+ and CD8+ T cell responses emphasizes their potential for epicutaneous immunization strategies.},
keywords = {Active, Animals, Antibodies, antibody, Antigen, Antigens, BLOOD, C-Type, cancer, CD, CD4-Positive T-Lymphocytes, CD4+ T cells, CD8-Positive T-Lymphocytes, CD8+ T cells, Dendritic Cells, DERMATOLOGY, DERMIS, Epidermis, Growth, Human, Humans, immune response, IMMUNE-RESPONSES, Immunization, Immunology, Immunotherapy, in situ, In vivo, Inbred BALB C, Inbred C57BL, INDUCTION, Langerhans Cells, LECTIN, Lectins, LYMPH, LYMPH NODE, Lymph Nodes, Major Histocompatibility Complex, Mannose-Binding Lectins, metabolism, methods, MHC class I, MHC class I molecules, Mice, Neoplasm, Neoplasms, OVALBUMIN, Patients, PROGENITORS, Protein, Proteins, RESPONSES, review, Skin, T CELLS, T-CELLS, Team-Mueller, therapy, tumor},
pubstate = {published},
tppubtype = {article}
}
1999
Hoffmann Jules A, Kafatos Fotis C, Janeway Charles A, Ezekowitz Alan R B
Phylogenetic perspectives in innate immunity Article de journal
Dans: Science, vol. 284, no. 5418, p. 1313–1318, 1999, ISSN: 0036-8075.
Résumé | BibTeX | Étiquettes: Active, Animals, Culicidae, hoffmann, Humans, Immunity, Immunological, infection, Innate, Insect Vectors, M3i, Mammals, Models, Phagocytosis, Phylogeny, Proteins
@article{hoffmann_phylogenetic_1999,
title = {Phylogenetic perspectives in innate immunity},
author = {Jules A Hoffmann and Fotis C Kafatos and Charles A Janeway and Alan R B Ezekowitz},
issn = {0036-8075},
year = {1999},
date = {1999-05-01},
journal = {Science},
volume = {284},
number = {5418},
pages = {1313--1318},
abstract = {The concept of innate immunity refers to the first-line host defense that serves to limit infection in the early hours after exposure to microorganisms. Recent data have highlighted similarities between pathogen recognition, signaling pathways, and effector mechanisms of innate immunity in Drosophila and mammals, pointing to a common ancestry of these defenses. In addition to its role in the early phase of defense, innate immunity in mammals appears to play a key role in stimulating the subsequent, clonal response of adaptive immunity.},
keywords = {Active, Animals, Culicidae, hoffmann, Humans, Immunity, Immunological, infection, Innate, Insect Vectors, M3i, Mammals, Models, Phagocytosis, Phylogeny, Proteins},
pubstate = {published},
tppubtype = {article}
}