title: Human bone marrow stroma-dependent cell line MOLP-5 derived from a patient in leukaemic phase of multiple myeloma.
abstract: The novel multiple myeloma (MM) cell line MOLP-5 and its homologous sister cell line B407, a lymphoblastoid cell line (LCL), were established from the peripheral blood of a 71-year-old Japanese patient with Bence-Jones kappa-type multiple myeloma (stage IIIB with hyperammonaemia and hypercalcaemia). The growth of MOLP-5 cells is constitutively dependent on bone marrow stroma (BST) cells; none of the cytokines tested nor the culture supernatant of the bone marrow stroma cells could support the growth of MOLP-5. Wright-Giemsa-stained MOLP-5 cells showed typical plasma cell morphology with abundant cytoplasm and one to three nuclei. The immunoprofile of MOLP-5 corresponds to that seen typically in primary MM cells: positive for cytoplasmic immunoglobulin (Ig) kappa light chain, CD28, CD29, CD38, CD40, CD44, CD49d, CD54, CD56, CD58, CD71, CD138 and PCA-1; the cells were negative for surface Ig and various other B-cell, T-cell and myelomonocyte-associated immunomarkers. Interleukin 6 (IL-6) receptor mRNA was found in the reverse transcriptase polymerase chain reaction (RT-PCR) analysis. IL-6 and IL-10 could induce cellular proliferation in short-term induction experiments. IL-6 or IL-10 production was not detected by specific enzyme-linked immunoabsorbent assay (ELISA). MOLP-5 cells expressed parathyroid hormone-related protein (PTHrP) at the mRNA level. Cytogenetic analysis showed the typical t(11; 14) chromosome abnormality. The novel MOLP-5 cell line together with the B407 B-LCL sister line will be useful model systems in the investigation of the biology of MM.
authors.affiliation: Fujisaki Cell Centre, Hayashibara Biochemical Laboratories, Okayama, Japan. yomatsuo@hayashibara.co.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Matsuo
authors.forename: H G
authors.initials: HG
authors.lastname: Drexler
authors.forename: C
authors.initials: C
authors.lastname: Nishizaki
authors.forename: A
authors.initials: A
authors.lastname: Harashima
authors.forename: S
authors.initials: S
authors.lastname: Fukuda
authors.forename: T
authors.initials: T
authors.lastname: Kozuka
authors.forename: T
authors.initials: T
authors.lastname: Sezaki
authors.forename: K
authors.initials: K
authors.lastname: Orita
mesh_terms: D036541:ADP-ribosyl Cyclase; D051997:ADP-ribosyl Cyclase 1; D000368:Aged; D015703:Antigens, CD; D000943:Antigens, Differentiation / Q000276:immunology; D018106:CD28 Antigens / Q000276:immunology; D019013:CD40 Antigens / Q000276:immunology; D018929:Cell Culture Techniques / Q000379:methods; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D002880:Chromosomes, Human, Pair 11; D016172:DNA Fingerprinting; D005434:Flow Cytometry; D006801:Humans; D016898:Interferon-alpha / Q000494:pharmacology; D015850:Interleukin-6 / Q000032:analysis / Q000494:pharmacology; D007621:Karyotyping; D007938:Leukemia / Q000235:genetics / Q000276:immunology* / Q000473:pathology; D008297:Male; D008562:Membrane Glycoproteins; D009101:Multiple Myeloma / Q000235:genetics / Q000276:immunology* / Q000473:pathology; D009244:NAD+ Nucleosidase / Q000276:immunology; D010950:Plasma Cells; D019947:Receptors, Interleukin-6 / Q000032:analysis; D014178:Translocation, Genetic
chemical_list: D015703:Antigens, CD; D000943:Antigens, Differentiation; D018106:CD28 Antigens; D019013:CD40 Antigens; D016898:Interferon-alpha; D015850:Interleukin-6; D008562:Membrane Glycoproteins; D019947:Receptors, Interleukin-6; D036541:ADP-ribosyl Cyclase; C498154:CD38 protein, human; D009244:NAD+ Nucleosidase; D051997:ADP-ribosyl Cyclase 1