Toxoplasma gondii: Effect of infection on expression of 14-3-3 proteins in human epithelial cells

Fernando P. Monroy

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


14-3-3 Proteins are expressed in most eukaryotes organisms and play varied and crucial roles in a wide range of regulatory processes. In mammalian cells, seven 14-3-3 isoforms have been identified. However, it is not known what effect infection has on 14-3-3 isoform expression. In this study human colonic carcinoma cell lines were infected with Toxoplasma gondii for 24 h and expression of 14-3-3 proteins was determined by RT-PCR. HT-29 cells only expressed 3 out of the 7 isoforms while 5 and all 7 isoforms were found in HCT-116 and Caco-2 cells, respectively. Infection had little or no effect in the expression of 14-3-3γ, ε, σ, and ξ; but in HCT-116 cells induced expression of 14-3-3η and σ, while 14-3-3β, η, and ξ were induced in HT-29 cells. If 14-3-3 proteins are involved in cell survival and/or prevention of parasite replication, longer incubation times may be required as no differences in percentage of infection were found among the cell lines at 24 h post-infection.

Original languageEnglish (US)
Pages (from-to)134-138
Number of pages5
JournalExperimental Parasitology
Issue number1
StatePublished - Jan 2008


  • 14-3-3 Isoforms
  • Colon cancer cells
  • Colonic epithelial cells
  • RT-PCR
  • Toxoplasma

ASJC Scopus subject areas

  • Parasitology
  • Immunology
  • Infectious Diseases


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