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HIV type 1 Tat protein induces apoptosis and death in Jurkat cells. 1995

S F Purvis, and J W Jacobberger, and R M Sramkoski, and A H Patki, and M M Lederman
Department of Environmental Health Sciences, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA.

Jurkat cells stably expressing high levels of the HIV-1 Tat protein were generated after transfection with an Epstein-Barr virus-based episomal replicon and selection in hygromycin B. The Jurkat Tat transfectants exhibited a longer doubling time when compared to Jurkat cells or Jurkat cells transfected with the control parent plasmid. Cell cycle analysis revealed comparable durations of each phase of the cell cycle in the Tat and control transfectants. Flow cytometric analysis using Hoechst 33342 and propidium iodide staining revealed that the Tat transfectants exhibited a higher percentage of apoptotic cells when compared to the control transfectants (29.1 +/- 3.1 vs. 11.43 +/- 3.1%). Incubation of Jurkat cells with recombinant HIV-1 Tat protein resulted in induction of apoptosis. The HIV-1 Tat protein induces apoptosis in a CD4-positive T cell line. Tat-induced programmed cell death may contribute to the lymphocyte depletion seen in persons infected with HIV-1.

UI MeSH Term Description Entries
D011994 Recombinant Proteins Proteins prepared by recombinant DNA technology. Biosynthetic Protein,Biosynthetic Proteins,DNA Recombinant Proteins,Recombinant Protein,Proteins, Biosynthetic,Proteins, Recombinant DNA,DNA Proteins, Recombinant,Protein, Biosynthetic,Protein, Recombinant,Proteins, DNA Recombinant,Proteins, Recombinant,Recombinant DNA Proteins,Recombinant Proteins, DNA
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D005814 Genes, Viral The functional hereditary units of VIRUSES. Viral Genes,Gene, Viral,Viral Gene
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014162 Transfection The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES. Transfections
D015497 HIV-1 The type species of LENTIVIRUS and the etiologic agent of AIDS. It is characterized by its cytopathic effect and affinity for the T4-lymphocyte. Human immunodeficiency virus 1,HIV-I,Human Immunodeficiency Virus Type 1,Immunodeficiency Virus Type 1, Human
D015658 HIV Infections Includes the spectrum of human immunodeficiency virus infections that range from asymptomatic seropositivity, thru AIDS-related complex (ARC), to acquired immunodeficiency syndrome (AIDS). HTLV-III Infections,HTLV-III-LAV Infections,T-Lymphotropic Virus Type III Infections, Human,HIV Coinfection,Coinfection, HIV,Coinfections, HIV,HIV Coinfections,HIV Infection,HTLV III Infections,HTLV III LAV Infections,HTLV-III Infection,HTLV-III-LAV Infection,Infection, HIV,Infection, HTLV-III,Infection, HTLV-III-LAV,Infections, HIV,Infections, HTLV-III,Infections, HTLV-III-LAV,T Lymphotropic Virus Type III Infections, Human
D015696 Gene Products, tat Trans-acting transcription factors produced by retroviruses such as HIV. They are nuclear proteins whose expression is required for viral replication. The tat protein stimulates LONG TERMINAL REPEAT-driven RNA synthesis for both viral regulatory and viral structural proteins. Tat stands for trans-activation of transcription. tat Gene Products,tat Protein,Gene Product, tat,tat Gene Product
D015870 Gene Expression The phenotypic manifestation of a gene or genes by the processes of GENETIC TRANSCRIPTION and GENETIC TRANSLATION. Expression, Gene,Expressions, Gene,Gene Expressions
D016923 Cell Death The termination of the cell's ability to carry out vital functions such as metabolism, growth, reproduction, responsiveness, and adaptability. Death, Cell

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