title: Establishment of an interleukin-5-dependent subclone from an interleukin-3-dependent murine hemopoietic progenitor cell line, LyD9, and its malignant transformation by autocrine secretion of interleukin-5.
abstract: An interleukin-5 (IL-5)-dependent subclone, K-5, was established from an IL-3-dependent murine hemopoietic progenitor cell line by co-culturing with bone marrow stroma cells. K-5 cells were induced to differentiate into myeloid lineage cells by co-culturing with cloned PA6 stroma cells. By co-culturing with another cloned stroma cell (ST-2s10), K-5 cells gave rise to a factor-independent transformant cell line LT-5 which proliferated in an autocrine manner by secretion of IL-5 and produced tumors in nude mice. Molecular cloning of the IL-5 gene of LT-5 cells and the nucleotide sequencing of its 5' flanking region indicate that a transposition of an intracisternal A-particle (IAP) element to the 5' flanking region of the IL-5 gene is responsible for the constitutive expression of IL-5 mRNA of an aberrant size in LT-5 cells.
authors.affiliation: Department of Medical Chemistry, Kyoto University Faculty of Medicine, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Tohyama
authors.forename: K H
authors.initials: KH
authors.lastname: Lee
authors.forename: K
authors.initials: K
authors.lastname: Tashiro
authors.forename: T
authors.initials: T
authors.lastname: Kinashi
authors.forename: T
authors.initials: T
authors.lastname: Honjo
mesh_terms: D000818:Animals; D001483:Base Sequence; D002454:Cell Differentiation; D002460:Cell Line; D002471:Cell Transformation, Neoplastic / Q000235:genetics*; D002999:Clone Cells; D004247:DNA / Q000032:analysis; D005786:Gene Expression Regulation; D007426:Genes, Intracisternal A-Particle; D006412:Hematopoietic Stem Cells; D007377:Interleukin-3 / Q000235:genetics* / Q000378:metabolism; D015848:Interleukin-5 / Q000235:genetics* / Q000378:metabolism; D051379:Mice; D008819:Mice, Nude; D008969:Molecular Sequence Data; D009928:Organ Specificity; D015183:Restriction Mapping
chemical_list: D007377:Interleukin-3; D015848:Interleukin-5; D004247:DNA