Differential gene expression of soluble CD8+ T- cell mediated suppression of HIV replication in three older children

Ben Z. Katz*, Babak Salimi, Samantha L. Gadd, Chiang Ching Huang, William J. Kabat, Donna Kersey, Chris McCabe, Taylor Heald-Sargent, Elyssa D. Katz, Ram Yogev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Suppression of human immunodeficiency virus (HIV) replication by CD8+ T- cells (CD8 suppression) contributes to survival in adults and children <1 year. Soluble CD8 suppression can also be seen in some older children with AIDS. The factor responsible, CD8- derived antiviral factor (CAF), acts at the level of HIV RNA transcription. Differential gene expression techniques have been used to define the gene(s) mediating this phenomenon in adults. Recently, CAF has been linked to exosomes secreted by CD8+ T- cells. To compare the gene expression profiles from pediatric patients with each other, with those reported in 2 previous studies in adults and in those reportedly related to exosomes, we used differential gene expression to study three older children with HIV infection, one who did demonstrate soluble CD- 8 suppression and two who did not. Eighteen differentially expressed 1, Χ2 test) in a second adult study. In addition, two exosome components and some RNA's related to exosomal proteins were also differentially expressed. In children with HIV infection, we found significant differentially expressed genes that correlated to those previously reported in two studies in adults. Our data also lends some support to the recent identification of CAF with exosomes secreted by CD8+ T- cells.

Original languageEnglish (US)
Pages (from-to)24-32
Number of pages9
JournalJournal of Medical Virology
Issue number1
StatePublished - Jan 2011


  • CD8- derived antiviral factor
  • Differential gene expression
  • Gene array
  • Pediatric HIV infcetion
  • Soluble CD8 suppression

ASJC Scopus subject areas

  • Virology
  • Infectious Diseases


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