PMID- 11222915 OWN - NLM STAT- MEDLINE DCOM- 20010614 LR - 20231213 IS - 0165-2478 (Print) IS - 0165-2478 (Linking) VI - 76 IP - 1 DP - 2001 Feb 1 TI - A clinically approved oral vaccine against pneumotropic bacteria induces the terminal maturation of CD83+ immunostimulatory dendritic cells. PG - 63-7 AB - Dendritic cells (DCs) are important antigen-presenting cells of the immune system that have attracted interest as cellular adjuvants to induce immunity in clinical settings. We have investigated the effects of Broncho-Vaxom, an oral vaccine composed of lysates from eight pneumotropic bacteria, on human monocyte-derived dendritic cells (moDCs). Broncho-Vaxom induced the terminal maturation of CD83+ moDCs. MoDCs stimulated with Broncho-Vaxom displayed a phenotype of activated DCs with high levels of major histocompatibility complex (MHC) molecules and increased levels of adhesion and co-stimulatory molecules. In addition, moDCs activated with Broncho-Vaxom exhibited enhanced T cell-stimulatory capacity in the allogeneic mixed leukocyte reaction. Broncho-Vaxom at 100 microg/ml was as potent as TNF-alpha at 1000 U/ml in activating human moDCs. Neither LPS-like activity nor bacterial DNA was found to be responsible for the maturation-inducing activity of Broncho-Vaxom, suggesting that Broncho-Vaxom contains other bacterial factors that are capable of inducing the terminal maturation of moDCs. In DC-based immunotherapy, Broncho-Vaxom could be used as a stimulus of DC maturation, which meets the standards of good manufacturing practice (GMP). In addition, vaccination with Broncho-Vaxom-loaded moDCs may be an attractive treatment option in preventing recurrent airway infection in predisposed individuals. FAU - Zelle-Rieser, C AU - Zelle-Rieser C AD - Department of Urology, Anichstrasse 35, University of Innsbruck, A-6020, Innsbruck, Austria. claudia.rieser@uibk.ac.at FAU - Ramoner, R AU - Ramoner R FAU - Bartsch, G AU - Bartsch G FAU - Thurnher, M AU - Thurnher M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Immunol Lett JT - Immunology letters JID - 7910006 RN - 0 (Adjuvants, Immunologic) RN - 0 (Antigens, CD) RN - 0 (Bacterial Vaccines) RN - 0 (Broncho-Vaxom) RN - 0 (Cell Extracts) RN - 0 (Immunoglobulins) RN - 0 (Interferon Inducers) RN - 0 (Membrane Glycoproteins) SB - IM MH - Adjuvants, Immunologic/administration & dosage MH - Administration, Oral MH - Antigens, CD MH - *Bacteria MH - Bacterial Vaccines/*administration & dosage/*immunology MH - Cell Differentiation/immunology MH - *Cell Extracts MH - Cells, Cultured MH - Dendritic Cells/*cytology/*immunology MH - Humans MH - Immunoglobulins/*immunology MH - Immunophenotyping MH - Interferon Inducers/immunology MH - Lymphocyte Activation/*immunology MH - Membrane Glycoproteins/*immunology MH - Monocytes/cytology/immunology MH - Pneumonia, Bacterial/*immunology/prevention & control MH - T-Lymphocytes/immunology MH - CD83 Antigen EDAT- 2001/02/27 10:00 MHDA- 2001/06/23 10:01 CRDT- 2001/02/27 10:00 PHST- 2001/02/27 10:00 [pubmed] PHST- 2001/06/23 10:01 [medline] PHST- 2001/02/27 10:00 [entrez] AID - S0165-2478(00)00326-6 [pii] AID - 10.1016/s0165-2478(00)00326-6 [doi] PST - ppublish SO - Immunol Lett. 2001 Feb 1;76(1):63-7. doi: 10.1016/s0165-2478(00)00326-6.