Dendritic cell vaccination for patients with chronic myelogenous leukemia
Abstract
In this pilot study, we investigated the ability of autologous dendritic cells (DCs) pulsed ex vivo with leukemia-specific peptide to stimulate host antitumor immunity when administrated as a vaccine. Three patients with chronic myelogenous leukemia (CML) received three series of four administration of bcr-abl peptide-pulsed (1) blood DCs injected intravenously, (2) immature monocyte-derived DCs injected intradermally or (3) mature monocyte-derived DCs injected intradermally. Vaccination was well tolerated. No major toxicity occurred in any of the patients. In method (1), one patient developed peptide-specific cellular immune response with no clinical response. In method (2), one patient developed peptide-specific cellular immune response with no clinical response. In method (3), all patients developed peptide-specific cellular immune response with no clinical response. The clinical benefits of bcr-abl peptide-specific vaccination in CML remain to be determined. Further vaccine development is necessary to increase the clinical effect.
Abbreviations: DC, dendritic cell, CML, chronic myelogenous leukemia, APC, antigen-presenting cell, CTL, cytotoxic T lymphocyte, i.v., intravenously, i.d., intradermally, KLH, keyhole limpet hemocianin, PBMC, peripheral blood mononuclear cell, DTH, delayed-type hypersensitivity, FISH, fluorescence in situ hybridization
Keywords: Dendritic cell, Chronic myelogenous leukemia, Vaccination, bcr-abl, Clinical study
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PII: S0145-2126(03)00011-0
doi:10.1016/S0145-2126(03)00011-0
© 2003 Elsevier Science Ltd. All rights reserved.
