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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Disruption of the STAT4 signaling pathway protects from autoimmune diabetes while retaining antiviral immune competence.

The role of the STAT4 signaling pathway in autoimmune diabetes was investigated using the rat insulin promoter lymphocytic choriomeningitis virus model of virally induced autoimmune diabetes. Abrogation of STAT4 signaling significantly reduced the development of CD4+-T cell-dependent but not CD4+-T cell-independent diabetes, illustrating the fine-tuned kinetics involved in the pathogenesis of autoimmunity. However, the absence of STAT4 did not prevent the generation of autoreactive Th1/ Tc1 T cell responses, as well as protective antiviral immunity. Protection from insulin-dependent diabetes mellitus was associated with decreased numbers of autoreactive CTL precursors in the pancreas and the spleen and a general as well as Ag-specific reduction of IFN-gamma secretion by T lymphocytes. A shift from Th1 to Th2 T cell immunity was not observed. Hence, our results implicate both CTL and cytokines in beta cell destruction. Selective inhibition of the STAT4 signal transduction pathway might constitute a novel and attractive approach to prevent clinical insulin-dependent diabetes mellitus in prediabetic individuals at risk.[1]

References

  1. Disruption of the STAT4 signaling pathway protects from autoimmune diabetes while retaining antiviral immune competence. Holz, A., Bot, A., Coon, B., Wolfe, T., Grusby, M.J., von Herrath, M.G. J. Immunol. (1999) [Pubmed]
 
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