title: Effects of 5-aza-2'-deoxycytidine and interferon-alpha on differentiation and oncogene expression in HL-60 myeloid leukemic cells.
abstract: The antineoplastic effects of 5-aza-2'-deoxycytidine (5-AZA-CdR) and interferon-alpha (IFN-alpha) on human HL-60 myeloid leukemic cells were investigated. 5-AZA-CdR and IFN-alpha in combination produced a greater inhibition of DNA synthesis and cell growth than either agent alone. The co-treatment produced a synergistic reduction in the clonogenicity of the HL-60 leukemic cells. In addition, this combination also produced a greater reduction in mRNA expression for c-myc than each agent alone. This antileukemic action produced by 5-AZA-CdR and IFN-alpha in combination correlated with the increase in induction of differentiation of the HL-60 leukemic cells. These results suggest that 5-AZA-CdR and IFN-alpha in combination produces an enhancement of their antineoplastic action on HL-60 human myeloid leukemic cells.
authors.affiliation: Departement de Pharmacologie, Université de Montréal, Québec, Canada.
authors.forename: B T
authors.initials: BT
authors.lastname: Doré
authors.forename: R L
authors.initials: RL
authors.lastname: Momparler
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D001374:Azacitidine / Q000031:analogs & derivatives* / Q000494:pharmacology; D015152:Blotting, Northern; D002454:Cell Differentiation / Q000187:drug effects*; D004273:DNA, Neoplasm / Q000096:biosynthesis; D000077209:Decitabine; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects*; D006801:Humans; D016898:Interferon-alpha / Q000494:pharmacology*; D007951:Leukemia, Myeloid / Q000235:genetics / Q000473:pathology*; D009857:Oncogenes / Q000187:drug effects; D012334:RNA, Neoplasm / Q000096:biosynthesis; D014407:Tumor Cells, Cultured / Q000187:drug effects / Q000378:metabolism
chemical_list: D000970:Antineoplastic Agents; D004273:DNA, Neoplasm; D016898:Interferon-alpha; D012334:RNA, Neoplasm; D000077209:Decitabine; D001374:Azacitidine