PMID- 15269380 OWN - NLM STAT- MEDLINE DCOM- 20040824 LR - 20200303 IS - 0022-1317 (Print) IS - 0022-1317 (Linking) VI - 85 IP - Pt 8 DP - 2004 Aug TI - Immunization with dendritic cells can break immunological ignorance toward a persisting virus in the central nervous system and induce partial protection against intracerebral viral challenge. PG - 2379-2387 LID - 10.1099/vir.0.80115-0 [doi] AB - Dendritic cells (DCs) have been used successfully to induce CD8 T cells that control virus infections and growth of tumours. The efficacy of DC-mediated immunization for the control of neurotropic Borna disease virus (BDV) in mice was evaluated. Certain strains of mice only rarely develop spontaneous neurological disease, despite massive BDV replication in the brain. Resistance to disease is due to immunological ignorance toward BDV antigen in the central nervous system. Ignorance in mice can be broken by immunization with DCs coated with TELEISSI, a peptide derived from the N protein of BDV, which represents the immunodominant cytotoxic T lymphocyte epitope in H-2(k) mice. Immunization with TELEISSI-coated DCs further induced solid protective immunity against intravenous challenge with a recombinant vaccinia virus expressing BDV-N. Interestingly, however, this immunization scheme induced only moderate protection against intracerebral challenge with BDV, suggesting that immune memory raised against a shared antigen may be sufficient to control a peripherally replicating virus, but not a highly neurotropic virus that is able to avoid activation of T cells. This difference might be due to the lack of BDV-specific CD4 T cells and/or inefficient reactivation of DC-primed, BDV-specific CD8 T cells by the locally restricted BDV infection. Thus, a successful vaccine against persistent viruses with strong neurotropism should probably induce antiviral CD8 (as well as CD4) T-cell responses and should favour the accumulation of virus-specific memory T cells in cervical lymph nodes. FAU - Fassnacht, Ulrike AU - Fassnacht U AD - Department of Virology, University of Freiburg, Hermann-Herder-Str. 11, D-79104 Freiburg, Germany. FAU - Ackermann, Andreas AU - Ackermann A AD - Department of Virology, University of Freiburg, Hermann-Herder-Str. 11, D-79104 Freiburg, Germany. FAU - Staeheli, Peter AU - Staeheli P AD - Department of Virology, University of Freiburg, Hermann-Herder-Str. 11, D-79104 Freiburg, Germany. FAU - Hausmann, Jurgen AU - Hausmann J AD - Department of Virology, University of Freiburg, Hermann-Herder-Str. 11, D-79104 Freiburg, Germany. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Gen Virol JT - The Journal of general virology JID - 0077340 RN - 0 (Nucleocapsid Proteins) RN - 0 (Peptide Fragments) SB - IM MH - Animals MH - Borna disease virus/*immunology MH - Brain/*virology MH - Dendritic Cells/*immunology MH - Immunization MH - Immunologic Memory MH - Mice MH - Nucleocapsid Proteins/immunology MH - Peptide Fragments/immunology EDAT- 2004/07/23 05:00 MHDA- 2004/08/25 05:00 CRDT- 2004/07/23 05:00 PHST- 2004/07/23 05:00 [pubmed] PHST- 2004/08/25 05:00 [medline] PHST- 2004/07/23 05:00 [entrez] AID - 10.1099/vir.0.80115-0 [doi] PST - ppublish SO - J Gen Virol. 2004 Aug;85(Pt 8):2379-2387. doi: 10.1099/vir.0.80115-0.