High-throughput gene expression profiling indicates dysregulation of intestinal cell cycle mediators and growth factors during primary simian immunodeficiency virus infection

Michael D. George, Sumathi Sankaran-Walters, Elizabeth Reay, Angela C Gelli, Satya Dandekar

Research output: Contribution to journalArticle

62 Scopus citations


During primary simian immunodeficiency virus (SIV) infection, CD4+ T cells are severely depleted in gut-associated lymphoid tissue (GALT), while CD8+ T-cell numbers dramatically increase. To gain an understanding of the molecular basis of this disruption in T-cell homeostasis, host gene expression was monitored in longitudinal jejunum tissue biopsies from SIV-infected rhesus macaques by DNA microarray analysis. Transcription of cyclin E1, CDC2, retinoblastoma, transforming growth factor (TGF), fibroblast growth factor (FGF), and interleukin-2 was repressed while cyclins B1 and D2 and transcription factor E2F were upregulated, indicating a complex dysregulation of growth and proliferation within the intestinal mucosa. Innate, cell-mediated, and humoral immune responses were markedly upregulated in animals that significantly reduced their viral loads and retained more intestinal CD4+ T cells. We conclude that the alterations in intestinal gene expression during primary SIV infection were characteristic of a broad-range immune response, and reflective of the efficacy of viral suppression.

Original languageEnglish (US)
Pages (from-to)84-94
Number of pages11
Issue number1
StatePublished - Jul 20 2003


ASJC Scopus subject areas

  • Virology
  • Infectious Diseases

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