title: An HIV-1-infected T cell clone defective in IL-2 production and Ca2+ mobilization after CD3 stimulation.
abstract: A chronically HIV-1-infected T cell clone (J1.1) derived from Jurkat cells was developed that possesses defects in CD3 signaling. This clone was phenotypically determined to be CD4- and express a reduced surface density of CD3 as compared with a pool of uninfected Jurkat clones. Although J1.1 could be induced with TNF-alpha to produce HIV-1 particles, stimulation via the CD3 (T3-Ti) complex, using mAb cross-linking, had no effect on viral production. Further investigation revealed that J1.1 secreted approximately 20-fold less IL-2 than did uninfected Jurkat cells after anti-CD3 treatment. In addition, a separate defect in Ca2+ mobilization was noted in the HIV-1-infected J1.1 line when compared with uninfected Jurkat cells after anti-CD3 cross-linking. The cell line described offers a new model in which to study the mechanisms of several defects directly imposed by HIV-1 on CD3+ cells.
authors.affiliation: Division of Viral and Rickettsial Diseases, Centers for Disease Control, Atlanta, GA 30333.
authors.forename: V L
authors.initials: VL
authors.lastname: Perez
authors.forename: T
authors.initials: T
authors.lastname: Rowe
authors.forename: J S
authors.initials: JS
authors.lastname: Justement
authors.forename: S T
authors.initials: ST
authors.lastname: Butera
authors.forename: C H
authors.initials: CH
authors.lastname: June
authors.forename: T M
authors.initials: TM
authors.lastname: Folks
mesh_terms: D000945:Antigens, Differentiation, T-Lymphocyte / Q000502:physiology*; D017252:CD3 Complex; D002118:Calcium / Q000502:physiology*; D002460:Cell Line; D004306:Dose-Response Relationship, Immunologic; D006678:HIV / Q000276:immunology*; D015488:HIV Antigens / Q000276:immunology*; D016655:HIV Core Protein p24 / Q000378:metabolism; D015658:HIV Infections / Q000276:immunology*; D006801:Humans; D066298:In Vitro Techniques; D007376:Interleukin-2 / Q000096:biosynthesis*; D011940:Receptor Aggregation; D011948:Receptors, Antigen, T-Cell / Q000502:physiology*; D015398:Signal Transduction; D013601:T-Lymphocytes / Q000276:immunology / Q000382:microbiology*; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology
chemical_list: D000945:Antigens, Differentiation, T-Lymphocyte; D017252:CD3 Complex; D015488:HIV Antigens; D016655:HIV Core Protein p24; D007376:Interleukin-2; D011948:Receptors, Antigen, T-Cell; D014409:Tumor Necrosis Factor-alpha; D002118:Calcium