PMID- 12139943 OWN - NLM STAT- MEDLINE DCOM- 20020906 LR - 20201222 IS - 1521-6616 (Print) IS - 1521-6616 (Linking) VI - 104 IP - 1 DP - 2002 Jul TI - Immunogenicity and therapeutic efficacy of dendritic-tumor hybrid cells generated by electrofusion. PG - 14-20 AB - Dendritic cells (DCs) are potent antigen-presenting cells capable of inducing strong immune responses to weak tumor-associated antigens. Among various DC-based approaches, cancer immunotherapy with DC-tumor fusion hybrids offers advantages of polyclonal stimulation of a diverse array of tumor antigens. However, prevalent fusion methods using chemical fusogens such as polyethylene glycol often result in toxicity and low fusion efficiency. In this article, we describe an electrofusion technique, applicable to processing large numbers of cells with consistent and high fusion efficiency. Generation of fusion hybrids was verified by unequivocal experimental evidence. In animal models, fusion hybrids expressed the mature DC-like phenotype. They stimulated both CD4 and CD8 tumor-specific T cells to secrete interferon-gamma in vitro. In immunotherapy, a single vaccination with DC-tumor fusion cells along with interleukin-12 as an adjuvant eradicated tumors established in the skin nd lung. These results provide an impetus for treating cancer patients with similarly generated cells. FAU - Hayashi, Takashi AU - Hayashi T AD - Center for Surgery Research, Cleveland Clinic Foundation, Ohio 44195, USA. FAU - Tanaka, Hiroshi AU - Tanaka H FAU - Tanaka, Junta AU - Tanaka J FAU - Wang, Rongfu AU - Wang R FAU - Averbook, Bruce J AU - Averbook BJ FAU - Cohen, Peter A AU - Cohen PA FAU - Shu, Suyu AU - Shu S LA - eng GR - R01 CA84110/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Clin Immunol JT - Clinical immunology (Orlando, Fla.) JID - 100883537 RN - 0 (Antigens, CD) RN - 0 (B7-1 Antigen) RN - 0 (B7-2 Antigen) RN - 0 (CD86 protein, human) RN - 0 (Cd86 protein, mouse) RN - 0 (Integrin alphaXbeta2) RN - 0 (Membrane Glycoproteins) RN - 187348-17-0 (Interleukin-12) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Animals MH - Antigens, CD/immunology MH - B7-1 Antigen/immunology MH - B7-2 Antigen MH - Cells, Cultured MH - Dendritic Cells/cytology/drug effects/*immunology MH - Humans MH - Hybrid Cells/*immunology MH - Integrin alphaXbeta2/immunology MH - Interferon-gamma/metabolism MH - Interleukin-12/immunology MH - Membrane Glycoproteins/immunology MH - Mice MH - Mice, Inbred C57BL MH - Tumor Cells, Cultured EDAT- 2002/07/26 10:00 MHDA- 2002/09/07 10:01 CRDT- 2002/07/26 10:00 PHST- 2002/07/26 10:00 [pubmed] PHST- 2002/09/07 10:01 [medline] PHST- 2002/07/26 10:00 [entrez] AID - S1521661602952241 [pii] AID - 10.1006/clim.2002.5224 [doi] PST - ppublish SO - Clin Immunol. 2002 Jul;104(1):14-20. doi: 10.1006/clim.2002.5224.