A role for DHX32 in regulating T-cell apoptosis

Anticancer Res. 2007 Jan-Feb;27(1A):373-7.

Abstract

DHX32 is a novel putative RNA helicase with an activation-dependent pattern of expression in T-cells. To gain insight into the role of DHX32, Jurkat-DHX32 cells, a stable Jurkat T-cell line with constitutive DHX32 expression, were generated by retroviral gene transfer. There were no significant differences between control and Jurkat-DHX32 cells in terms of proliferation and response to several chemotherapeutic agents. There was an altered response of Jurkat-DHX32 cells to Fas signaling associated with down-regulation of the anti-apoptotic protein c-FLIP short. In normal peripheral blood lymphocytes, a correlation between DHX32 and c-FLIP short expression was detected in response to different T-cell specific and non-specific activation stimuli. Our results suggest that DHX32 might be involved in regulating T-cell response to certain apoptotic stimuli.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Apoptosis / physiology*
  • CASP8 and FADD-Like Apoptosis Regulating Protein / biosynthesis
  • DEAD-box RNA Helicases / biosynthesis
  • DEAD-box RNA Helicases / immunology
  • DEAD-box RNA Helicases / metabolism
  • DEAD-box RNA Helicases / physiology*
  • Humans
  • Jurkat Cells
  • Lymphocyte Activation
  • Signal Transduction
  • T-Lymphocytes / cytology*
  • T-Lymphocytes / enzymology*
  • T-Lymphocytes / immunology
  • fas Receptor / metabolism

Substances

  • CASP8 and FADD-Like Apoptosis Regulating Protein
  • CFLAR protein, human
  • fas Receptor
  • DHX32 protein, human
  • DEAD-box RNA Helicases