title: Differential gene expression in CD8(+) cells from HIV-1-infected subjects showing suppression of HIV replication.
abstract: CD8(+) cells from healthy HIV-1-infected individuals suppress human immunodeficiency virus (HIV) replication in infected cells by a non-cytotoxic mechanism. This activity is associated with the production of a soluble CD8(+) cell antiviral factor (CAF) that inhibits viral replication at the level of transcription. Strong CD8(+) cell non-cytotoxic anti-HIV responses (CNARs) correlate with an asymptomatic state and long-term survival of HIV-infected individuals. This antiviral activity is lost when the infected individual advances to disease. In attempts to define the gene(s) mediating CNAR we have evaluated differential gene expression between CD8(+) cells from infected subjects with high CNAR and CD8(+) cells from uninfected controls that lack this activity. The expression analysis, using the Affymetrix GeneChip Human Genome U133 Set, indicated that 18% of the genes were differentially expressed (DE) of which 9.2% were up-regulated. A total of 568 genes were up-regulated with a >2.0-fold difference in expression levels and a >50% concordance of difference call. Stringent selection criteria narrowed down the list to 52 up-regulated 'high confidence genes' (> or = 75% concordance). These genes function in a wide variety of cellular processes and include 13 associated with immunologic activity.
authors.affiliation: Department of Medicine, Division Hematology/Oncology, University of California, San Francisco, CA 94143-1270, USA.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Martinez-Mariño
authors.forename: Hillary
authors.initials: H
authors.lastname: Foster
authors.forename: Yanling
authors.initials: Y
authors.lastname: Hao
authors.forename: Jay A
authors.initials: JA
authors.lastname: Levy
mesh_terms: D018414:CD8-Positive T-Lymphocytes / Q000276:immunology* / Q000821:virology*; D020869:Gene Expression Profiling; D015658:HIV Infections / Q000276:immunology* / Q000821:virology; D015497:HIV-1 / Q000276:immunology* / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D020411:Oligonucleotide Array Sequence Analysis; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000032:analysis / Q000235:genetics; D015854:Up-Regulation; D014779:Virus Replication
chemical_list: D012333:RNA, Messenger