PMID- 16293215 OWN - NLM STAT- MEDLINE DCOM- 20060331 LR - 20061115 IS - 1672-7681 (Print) IS - 1672-7681 (Linking) VI - 1 IP - 6 DP - 2004 Dec TI - Specific antitumor effects of tumor vaccine produced by electrofusion between osteosarcoma cell and dendritic cell in rats. PG - 454-60 AB - Dendritic cells (DCs) are potent antigen-presenting cells capable of inducing primary T-cell responses. Several immunotherapy treatment strategies involve manipulation of DCs, both in vivo and ex vivo, to promote the immunogenic presentation of tumor-associated antigens. In this study, an electrofusion protocol was developed to induce fusion between osteosarcoma cells and allogeneic bone marrow-derived DCs. Preimmunization with irradiated electrofusion products was found to provide partial or complete protection from tumor challenge in the UMR106 tumor model. Vaccinated survivors developed long immunological memory. The therapeutic potential of this type of approach was suggested by the ability of UMR106-DC electrofusion products which could induce tumor rejection in a substantial percentage (60%) of hosts bearing pre-established tumor cells. These results tended to indicate that treatment with electrofused tumor cells and allogeneic DCs might be capable of inducing a potent antitumor response and could conceivably be applied to a wide range of cancer indications for which tumor-associated antigens have not been identified. FAU - Yu, Zhe AU - Yu Z AD - Center of Orthopedic Surgery, Orthopedics Oncology Institute of Chinese PLA, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shanxi, China. yuzhe19@fmmu.edu.cn FAU - Fan, Qingyu AU - Fan Q FAU - Hao, Xinbao AU - Hao X FAU - Long, Hua AU - Long H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Cell Mol Immunol JT - Cellular & molecular immunology JID - 101242872 RN - 0 (Cancer Vaccines) SB - IM MH - Animals MH - Cancer Vaccines/*immunology MH - Cell Fusion MH - Cells, Cultured MH - Dendritic Cells/*cytology/*immunology MH - Immunotherapy MH - Male MH - Microscopy, Electron, Transmission MH - Osteosarcoma/*immunology/*pathology/therapy MH - Rats MH - Survival Rate MH - Xenograft Model Antitumor Assays EDAT- 2005/11/19 09:00 MHDA- 2006/04/01 09:00 CRDT- 2005/11/19 09:00 PHST- 2005/11/19 09:00 [pubmed] PHST- 2006/04/01 09:00 [medline] PHST- 2005/11/19 09:00 [entrez] PST - ppublish SO - Cell Mol Immunol. 2004 Dec;1(6):454-60.