PMID- 15079821 OWN - NLM STAT- MEDLINE DCOM- 20041220 LR - 20061115 IS - 1099-498X (Print) IS - 1099-498X (Linking) VI - 6 IP - 4 DP - 2004 Apr TI - RNA-containing adenovirus/polyethylenimine transfer complexes effectively transduce dendritic cells and induce antigen-specific T cell responses. PG - 464-70 AB - BACKGROUND: Dendritic cells (DCs) are the most potent antigen-presenting cells in initiating primary immune responses. Given the unique properties of DCs, gene-modified DCs represent a particularly attractive approach for immunotherapy of diseases such as cancer. METHODS: Gene-modified DCs were obtained by a receptor-mediated gene delivery system using adenovirus (Ad) particles as ligand and RNA or DNA condensed by polyethylenimine (PEI). In vitro transcribed polyadenylated or non-polyadenylated RNA was used. RNA-transduced DCs were generated expressing chicken ovalbumin (OVA) or chimeric constructs thereof, and compared with DNA-transduced DCs. RESULTS: Ad/PEI transfection complexes efficiently delivered RNA into DCs. Such RNA-transduced DCs induced OVA-specific T cell responses more effectively than DNA-transduced DCs. Furthermore, DCs transduced with polyadenylated RNA were more potent in stimulating CD4(+) and CD8(+) T cell responses than DCs transduced with non-polyadenylated RNA and this was particularly important for CD4(+) T cell responses. CONCLUSIONS: Ad/PEI/RNA transfection is an efficient means for generating RNA-transduced DCs and for stimulating antigen-specific T cell responses. Polyadenylation of RNA enhances CD8(+) T cell responses and is essential for CD4(+) T cell responses. CI - Copyright 2004 John Wiley & Sons, Ltd. FAU - Gust, Tatjana C AU - Gust TC AD - Max-Delbruck-Center for Molecular Medicine, MDC, Robert-Rossle-Str. 10, D-13092 Berlin, Germany. FAU - Diebold, Sandra S AU - Diebold SS FAU - Cotten, Matt AU - Cotten M FAU - Zenke, Martin AU - Zenke M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Gene Med JT - The journal of gene medicine JID - 9815764 RN - 0 (Antigens) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Macromolecular Substances) RN - 63231-63-0 (RNA) RN - 9002-98-6 (Polyethyleneimine) RN - 9006-59-1 (Ovalbumin) RN - 9007-49-2 (DNA) SB - IM MH - Adenoviridae/*genetics MH - Animals MH - Antigens/genetics MH - CD4-Positive T-Lymphocytes/physiology MH - CD8-Positive T-Lymphocytes/physiology MH - Cells, Cultured MH - DNA/administration & dosage MH - Dendritic Cells/*physiology MH - Histocompatibility Antigens Class II/genetics/immunology MH - Lymphocyte Activation/genetics MH - Macromolecular Substances MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred C57BL MH - Ovalbumin/genetics MH - Polyadenylation MH - Polyethyleneimine MH - RNA/*administration & dosage/chemistry MH - T-Lymphocytes/*immunology/*physiology MH - Transduction, Genetic/*methods MH - Transfection/methods EDAT- 2004/04/14 05:00 MHDA- 2004/12/21 09:00 CRDT- 2004/04/14 05:00 PHST- 2004/04/14 05:00 [pubmed] PHST- 2004/12/21 09:00 [medline] PHST- 2004/04/14 05:00 [entrez] AID - 10.1002/jgm.492 [doi] PST - ppublish SO - J Gene Med. 2004 Apr;6(4):464-70. doi: 10.1002/jgm.492.