title: Establishment and characterization of a Kaposi's sarcoma-associated herpesvirus- and Epstein-Barr virus-negative malignant lymphoma cell line (OHK) with primary effusion lymphoma immunophenotype.
abstract: A novel cell line, designated OHK, was established from ascites of a 59-year-old Japanese woman with diffuse large B-cell lymphoma showing a peculiar serosal tropism, as seen in primary effusion lymphomas (PEL). OHK exhibited a large pleomorphic morphology with irregular nuclei and distinct nucleoli, and included immunoblastic and Reed-Sternberg-like giant cells. On ultrastructural examination, rich intermediate filaments, and well-developed Golgi apparati and rough endoplasmic reticulum, were seen. Immunophenotypically, OHK lacked T and B cell-associated antigens, and had CD10, CD30, CD33 and CD138 antigens. Although OHK cells did not express immunoglobulin (Ig) protein, Southern blot analysis demonstrated clonal rearrangements of Ig heavy and light chain genes. These observations suggest that OHK cells are derived from preterminally differentiated B cells, and that they have features of PEL. Kaposi's sarcoma-associated herpesvirus and Epstein-Barr virus were not detected. OHK displayed hyperploid karyotypes with multiple structural abnormalities, and produced some cytokines such as macrophage-colony-stimulating factor (M-CSF), granulocyte-CSF, interleukin 6 and transforming growth factor beta 1. In particular, vascular endothelial growth factor (VEGF), whose stimulation of vascular permeability is thought to be critical to the pathogenesis of PEL, was also produced in large quantities. These results indicate that OHK may be a useful tool for the investigation of PEL.
authors.affiliation: Department of Pathology, Osaka Medical College, Takatsuki, Osaka, Japan. pa2020@art.osaka-med.ac.jp
authors.forename: Hiroko
authors.initials: H
authors.lastname: Kuwabara
authors.forename: Masami
authors.initials: M
authors.lastname: Nagai
authors.forename: Kimihiro
authors.initials: K
authors.lastname: Kawakami
authors.forename: Minoru
authors.initials: M
authors.lastname: Ohmori
authors.forename: Taizo
authors.initials: T
authors.lastname: Tasaka
authors.forename: Yasunobu
authors.initials: Y
authors.lastname: Funamoto
authors.forename: Genji
authors.initials: G
authors.lastname: Yamaoka
authors.forename: Hajime
authors.initials: H
authors.lastname: Nishio
authors.forename: Koichi
authors.initials: K
authors.lastname: Suzuki
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Mori
mesh_terms: D001202:Ascitic Fluid / Q000276:immunology / Q000473:pathology; D002869:Chromosome Aberrations; D016228:Endothelial Growth Factors / Q000235:genetics / Q000378:metabolism; D005260:Female; D015326:Gene Rearrangement, B-Lymphocyte, Heavy Chain; D015328:Gene Rearrangement, B-Lymphocyte, Light Chain; D016179:Granulocyte Colony-Stimulating Factor / Q000235:genetics / Q000378:metabolism; D006801:Humans; D016130:Immunophenotyping; D015850:Interleukin-6 / Q000235:genetics / Q000378:metabolism; D008222:Lymphokines / Q000235:genetics / Q000378:metabolism; D016393:Lymphoma, B-Cell / Q000276:immunology / Q000473:pathology*; D016173:Macrophage Colony-Stimulating Factor / Q000235:genetics / Q000378:metabolism; D008875:Middle Aged; D012333:RNA, Messenger / Q000032:analysis; D016212:Transforming Growth Factor beta / Q000235:genetics / Q000378:metabolism; D014407:Tumor Cells, Cultured; D042461:Vascular Endothelial Growth Factor A; D042442:Vascular Endothelial Growth Factors
chemical_list: D016228:Endothelial Growth Factors; D015850:Interleukin-6; D008222:Lymphokines; D012333:RNA, Messenger; D016212:Transforming Growth Factor beta; D042461:Vascular Endothelial Growth Factor A; D042442:Vascular Endothelial Growth Factors; D016179:Granulocyte Colony-Stimulating Factor; D016173:Macrophage Colony-Stimulating Factor