title: Establishment of a myeloid leukemia cell line, TRL-01, with MLL-ENL fusion gene.
abstract: We established a leukemia cell line derived from therapy-related acute myeloid leukemia with the t(11;19) by xenotransplantation into the NOD/SCID mouse with IL-2Rgamma(c)-/- (NOG mouse). The cell line, TRL-01, could be serially transplanted from mouse to mouse and also grown in an adherence-dependent manner on a murine bone marrow stroma cell line, HESS-5. TRL-01 had the same immunophenotype as the original leukemia cells: positive for CD13, CD33, CD11a, CD18, CD29, CD49d, CD49e, CD54, CD62L, and CD117, and negative for CD3, CD4, CD8, CD19, CD34, CD41a, CD41b, CD135, and myeloperoxidase. Translocation (11;19)(q23;p13) in both the original sample and TRL-01 generated MLL-ENL chimeric transcripts joining exon 6 and exon 4, respectively, which has a novel isoform. In cultures of TRL-01, addition of GM-CSF, SCF, and G-CSF and adhesion to fibronectin-coated plates promoted transient proliferation and survival, although they did not support long-term culture. Subcutaneous injection caused a tumor to form only when HESS-5 was coinjected at the same site. These results suggest that TRL-01 is a useful cell line for studying not only the leukemia-related biology of MLL-ENL but also the intercellular association between leukemia and stroma.
authors.affiliation: Department of Hematology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
authors.forename: Manabu
authors.initials: M
authors.lastname: Ninomiya
authors.forename: Akihiro
authors.initials: A
authors.lastname: Abe
authors.forename: Toshiya
authors.initials: T
authors.lastname: Yokozawa
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Ozeki
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Mamoru
authors.initials: M
authors.lastname: Ito
authors.forename: Masafumi
authors.initials: M
authors.lastname: Ito
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Kiyoi
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Emi
authors.forename: Tomoki
authors.initials: T
authors.lastname: Naoe
mesh_terms: D000328:Adult; D000595:Amino Acid Sequence; D000818:Animals; D017209:Apoptosis; D001483:Base Sequence; D045744:Cell Line, Tumor; D017931:DNA Primers; D018076:DNA, Complementary; D005260:Female; D050939:Gene Fusion; D006801:Humans; D016130:Immunophenotyping; D017404:In Situ Hybridization, Fluorescence; D007951:Leukemia, Myeloid / Q000235:genetics / Q000276:immunology / Q000473:pathology*; D051379:Mice; D016688:Mice, Inbred NOD; D016513:Mice, SCID; D008969:Molecular Sequence Data; D051788:Myeloid-Lymphoid Leukemia Protein / Q000235:genetics*; D015514:Oncogene Proteins, Fusion / Q000235:genetics*; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D017931:DNA Primers; D018076:DNA, Complementary; C425207:MLL-ENL oncoprotein, human; D015514:Oncogene Proteins, Fusion; D051788:Myeloid-Lymphoid Leukemia Protein