title: Establishment of cell lines from B-cell precursor acute lymphoblastic leukemia.
abstract: In an attempt to establish permanent cell lines from children with B-cell precursor acute lymphoblastic leukemia (BCP-ALL), 123 clinical samples from 117 patients were cultured in vitro. Using a method which was successful for the growth of ALL with T-cell phenotype, 3% (2/74) of BCP-ALL samples from patients at diagnosis and 31% (9/29) of BCP-ALL samples from patients at relapse were established as cell lines. However, in most cultures, leukemic cells survived for only a few weeks and the majority of viable cells present after 28 days of culture were esterase-positive mononuclear cells. Based on the hypothesis that mononuclear cells inhibited leukemic cell growth, we evaluated the effect of a monocyte toxin, L-leucine methyl ester (Leu-OMe), on the growth of four frozen BCP-ALL samples. Thawed leukemic cells treated with Leu-OMe, but not untreated control cells, proliferated in three samples and one new cell line was established. Subsequently, when Leu-OMe was added to fresh leukemia cells in culture, leukemic cell lines were grown from 29% (4/14) of samples at diagnosis and 66% (4/6) of relapse samples. Overall, 20 BCP-ALL cell lines were established, all were Epstein-Barr virus (EBV)-negative, and authenticity of each cell line was verified by a direct comparison of the immunophenotype, karyotype, and genotype with the patient's tumor cells. This improved method of cell culture permits a higher success rate of cell line establishment from patients with BCP-ALL thereby aiding in analysis of B-lymphocyte transformation and neoplasia.
authors.affiliation: University of Chicago Department of Pediatrics, IL.
authors.forename: L Q
authors.initials: LQ
authors.lastname: Zhang
authors.forename: P A
authors.initials: PA
authors.lastname: Downie
authors.forename: W R
authors.initials: WR
authors.lastname: Goodell
authors.forename: N R
authors.initials: NR
authors.lastname: McCabe
authors.forename: M M
authors.initials: MM
authors.lastname: LeBeau
authors.forename: R
authors.initials: R
authors.lastname: Morgan
authors.forename: J
authors.initials: J
authors.lastname: Sklar
authors.forename: S C
authors.initials: SC
authors.lastname: Raimondi
authors.forename: D
authors.initials: D
authors.lastname: Miley
authors.forename: A
authors.initials: A
authors.lastname: Goldberg
mesh_terms: D000293:Adolescent; D000328:Adult; D002455:Cell Division / Q000187:drug effects; D002648:Child; D002675:Child, Preschool; D005260:Female; D015322:Gene Rearrangement, B-Lymphocyte; D006801:Humans; D016130:Immunophenotyping; D007621:Karyotyping; D007930:Leucine / Q000031:analogs & derivatives / Q000494:pharmacology; D007963:Leukocytes, Mononuclear / Q000187:drug effects / Q000473:pathology; D008297:Male; D015452:Precursor B-Cell Lymphoblastic Leukemia-Lymphoma / Q000235:genetics / Q000276:immunology / Q000473:pathology*; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000235:genetics / Q000276:immunology / Q000473:pathology*; D014407:Tumor Cells, Cultured / Q000187:drug effects / Q000276:immunology / Q000473:pathology
chemical_list: C030365:leucine methyl ester; D007930:Leucine