PMID- 15197237 OWN - NLM STAT- MEDLINE DCOM- 20041005 LR - 20231213 IS - 0741-5400 (Print) IS - 0741-5400 (Linking) VI - 76 IP - 3 DP - 2004 Sep TI - Histone deacetylase inhibition improves dendritic cell differentiation of leukemic blasts with AML1-containing fusion proteins. PG - 623-33 AB - Recurrent cytogenetic abnormalities in leukemic blasts make these an attractive source for dendritic cells (DC) to induce a leukemia-specific immune response. In this study, three leukemic cell lines were investigated: Kasumi-1 and SKNO-1 (two acute myeloid leukemia (AML) cell lines carrying the (8;21)-chromosomal translocation, resulting in the expression of the leukemia-specific fusion protein AML1-eight-twenty-one) and REH, an acute lymphoblastic leukemia cell line with the (12;21)-chromosomal translocation and expression of translocation ETS-like leukemia-AML1. These fusion proteins are implicated in the pathogenesis of the leukemic state by recruiting corepressors and histone deacetylases (HDAC), which interfere with normal cell differentiation. In vitro generation of DC was achieved using a cytokine cocktail containing tumor necrosis factor alpha, granulocyte macrophage-colony stimulating factor, c-kit ligand, and soluble CD40 ligand; yet, addition of the HDAC inhibitor (Hdi) trichostatin A enhanced DC differentiation with retention of the fusion transcripts. These leukemic DC showed high-level CD83 and human leukocyte antigen (HLA)-DR expression and had a high allostimulatory potential. Only DC generated from these cell lines after Hdi induced blast-specific cytotoxic T cell responses in HLA-A-matched T cells with a cytotoxicity of 42% in parental Kasumi-1 and 83% in parental REH cells, respectively. This model system suggests that the Hdi supports the in vitro differentiation of DC from leukemic blasts with AML1-containing fusion proteins. FAU - Moldenhauer, Anja AU - Moldenhauer A AD - Institute for Transfusion Medicine and Immunehaematology, Campus Virchow-Klinikum, Charite-Universitatsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany. anja.moldenhauer@charite.de FAU - Frank, Richard C AU - Frank RC FAU - Pinilla-Ibarz, Javier AU - Pinilla-Ibarz J FAU - Holland, Gudrun AU - Holland G FAU - Boccuni, Piernicola AU - Boccuni P FAU - Scheinberg, David A AU - Scheinberg DA FAU - Salama, Abdulgabar AU - Salama A FAU - Seeger, Karl AU - Seeger K FAU - Moore, Malcolm A S AU - Moore MA FAU - Nimer, Stephen D AU - Nimer SD LA - eng GR - CA08748/CA/NCI NIH HHS/United States GR - CA70388/CA/NCI NIH HHS/United States GR - CA75192/CA/NCI NIH HHS/United States GR - DK43025/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. DEP - 20040614 PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (Antigens, CD) RN - 0 (Core Binding Factor Alpha 2 Subunit) RN - 0 (Cytokines) RN - 0 (DNA-Binding Proteins) RN - 0 (Enzyme Inhibitors) RN - 0 (HLA-DR Antigens) RN - 0 (Histone Deacetylase Inhibitors) RN - 0 (Hydroxamic Acids) RN - 0 (Immunoglobulins) RN - 0 (Membrane Glycoproteins) RN - 0 (Oncogene Proteins, Fusion) RN - 0 (Proto-Oncogene Proteins) RN - 0 (RUNX1 protein, human) RN - 0 (Transcription Factors) RN - 3X2S926L3Z (trichostatin A) RN - EC 3.5.1.98 (Histone Deacetylases) SB - IM MH - Antigens, CD MH - Cell Differentiation/*drug effects/immunology MH - Cell Line, Tumor MH - Core Binding Factor Alpha 2 Subunit MH - Cytokines/pharmacology MH - DNA-Binding Proteins/genetics/*immunology/metabolism MH - Dendritic Cells/*drug effects/enzymology/immunology MH - Enzyme Inhibitors/pharmacology MH - HLA-DR Antigens/immunology MH - *Histone Deacetylase Inhibitors MH - Histone Deacetylases/metabolism MH - Humans MH - Hydroxamic Acids/pharmacology MH - Immunoglobulins/immunology MH - Leukemia/*drug therapy/enzymology/immunology MH - Lymphocyte Activation/drug effects/immunology MH - Lymphocyte Culture Test, Mixed MH - Membrane Glycoproteins/immunology MH - Oncogene Proteins, Fusion/genetics/*immunology/metabolism MH - Proto-Oncogene Proteins/genetics/*immunology/metabolism MH - T-Lymphocytes, Cytotoxic/drug effects/immunology MH - Transcription Factors/genetics/*immunology/metabolism MH - CD83 Antigen EDAT- 2004/06/16 05:00 MHDA- 2004/10/06 09:00 CRDT- 2004/06/16 05:00 PHST- 2004/06/16 05:00 [pubmed] PHST- 2004/10/06 09:00 [medline] PHST- 2004/06/16 05:00 [entrez] AID - jlb.1103581 [pii] AID - 10.1189/jlb.1103581 [doi] PST - ppublish SO - J Leukoc Biol. 2004 Sep;76(3):623-33. doi: 10.1189/jlb.1103581. Epub 2004 Jun 14.