PMID- 21332943 OWN - NLM STAT- MEDLINE DCOM- 20110606 LR - 20110404 IS - 1742-4658 (Electronic) IS - 1742-464X (Linking) VI - 278 IP - 8 DP - 2011 Apr TI - Oligomannose-coated liposomes efficiently induce human T-cell leukemia virus-1-specific cytotoxic T lymphocytes without adjuvant. PG - 1358-66 LID - 10.1111/j.1742-4658.2011.08055.x [doi] AB - Human T-cell leukemia virus-1 (HTLV-1) causes adult T-cell leukemia/lymphoma, which is an aggressive peripheral T-cell neoplasm. Insufficient T-cell response to HTLV-1 is a potential risk factor in adult T-cell leukemia/lymphoma. Efficient induction of antigen-specific cytotoxic T lymphocytes is important for immunological suppression of virus-infected cell proliferation and oncogenesis, but efficient induction of antigen-specific cytotoxic T lymphocytes has evaded strategies utilizing poorly immunogenic free synthetic peptides. Here, we examined the efficient induction of an HTLV-1-specific CD8+ T-cell response by oligomannose-coated liposomes (OMLs) encapsulating the human leukocyte antigen (HLA)-A*0201-restricted HTLV-1 Tax-epitope (OML/Tax). Immunization of HLA-A*0201 transgenic mice with OML/Tax induced an HTLV-1-specific gamma-interferon reaction, whereas immunization with epitope peptide alone induced no reaction. Upon exposure of dendritic cells to OML/Tax, the levels of CD86, major histocompatibility complex class I, HLA-A02 and major histocompatibility complex class II expression were increased. In addition, our results showed that HTLV-1-specific CD8+ T cells can be efficiently induced by OML/Tax from HTLV-1 carriers compared with epitope peptide alone, and these HTLV-1-specific CD8+ T cells were able to lyse cells presenting the peptide. These results suggest that OML/Tax is capable of inducing antigen-specific cellular immune responses without adjuvants and may be useful as an effective vaccine carrier for prophylaxis in tumors and infectious diseases by substituting the epitope peptide. CI - (c) 2011 The Authors Journal compilation (c) 2011 FEBS. FAU - Kozako, Tomohiro AU - Kozako T AD - Division of Hematology and Immunology, Center for Chronic Viral Diseases, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan. kozako@fukuoka-u.ac.jp FAU - Hirata, Shinya AU - Hirata S FAU - Shimizu, Yoshitaka AU - Shimizu Y FAU - Satoh, Yuichiro AU - Satoh Y FAU - Yoshimitsu, Makoto AU - Yoshimitsu M FAU - White, Yohann AU - White Y FAU - Lemonnier, Francois AU - Lemonnier F FAU - Shimeno, Hiroshi AU - Shimeno H FAU - Soeda, Shinji AU - Soeda S FAU - Arima, Naomichi AU - Arima N LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110310 PL - England TA - FEBS J JT - The FEBS journal JID - 101229646 RN - 0 (Liposomes) RN - 0 (Oligosaccharides) RN - 0 (oligomannoside) SB - IM MH - Animals MH - CD8-Positive T-Lymphocytes/immunology MH - Dendritic Cells/immunology MH - Female MH - HTLV-I Infections/immunology MH - Human T-lymphotropic virus 1/*immunology MH - Humans MH - Leukemia-Lymphoma, Adult T-Cell/immunology MH - Liposomes/*pharmacology MH - Mice MH - Oligosaccharides/*pharmacology MH - T-Lymphocytes, Cytotoxic/drug effects/*immunology EDAT- 2011/02/22 06:00 MHDA- 2011/06/07 06:00 CRDT- 2011/02/22 06:00 PHST- 2011/02/22 06:00 [entrez] PHST- 2011/02/22 06:00 [pubmed] PHST- 2011/06/07 06:00 [medline] AID - 10.1111/j.1742-4658.2011.08055.x [doi] PST - ppublish SO - FEBS J. 2011 Apr;278(8):1358-66. doi: 10.1111/j.1742-4658.2011.08055.x. Epub 2011 Mar 10.