title: Characterization of cells of the myeloid-monocytic lineage (ML-1, HL-60, THP-1, U-937) chronically infected with the human immunodeficiency virus-1.
abstract: The myeloid-monocytic cells ML-1, HL-60, THP-1 and U-937 were chronically infected (for more than 2 years) with the lymphotropic HIV-1 strain HTLV-IIIB. Reinfection experiments revealed that viruses obtained from chronically infected ML-1/HIV-1 and HL-60/HIV-1 cells show a low infectivity if tested with uninfected ML-1 and HL-60 cells in contrast to virus preparations from chronically infected THP-1/HIV-1 and U-937/HIV-1 with their corresponding uninfected cell lines. Analyses of selected cell surface markers showed a differential expression of CD4, CD8, CD11c, CD14, CD15, CD20, HLA-DR and HLA-DQ in non- or chronically infected cells. During chronical infection, the myeloid-monocytic cells lost their reactivity with peroxidase and esterase. In chronically infected cells, the steady-state levels for TNF-alpha mRNA remained unchanged while those for IL-6 decreased. The half-lives of transcripts of both TNF-alpha (t1/2: 70 min) and IL-6 (t1/2: 100 min) were nearly the same in uninfected and chronically infected HL-60 cells.
authors.affiliation: Division of AIDS Virus, National Institute of Health, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ushijima
authors.forename: T
authors.initials: T
authors.lastname: Kunisada
authors.forename: Y
authors.initials: Y
authors.lastname: Ami
authors.forename: H
authors.initials: H
authors.lastname: Tsuchie
authors.forename: I
authors.initials: I
authors.lastname: Takahashi
authors.forename: H
authors.initials: H
authors.lastname: Schäcke
authors.forename: W E
authors.initials: WE
authors.lastname: Müller
mesh_terms: D001853:Bone Marrow / Q000382:microbiology*; D002460:Cell Line; D005434:Flow Cytometry; D005455:Fluorescent Antibody Technique; D015870:Gene Expression; D015658:HIV Infections / Q000276:immunology / Q000473:pathology*; D015497:HIV-1 / Q000254:growth & development*; D006801:Humans; D016130:Immunophenotyping; D015850:Interleukin-6 / Q000235:genetics; D009000:Monocytes / Q000382:microbiology*; D012333:RNA, Messenger / Q000378:metabolism; D013997:Time Factors; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics
chemical_list: D015850:Interleukin-6; D012333:RNA, Messenger; D014409:Tumor Necrosis Factor-alpha