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

Uncoupling of proliferation and Stat5 activation in thymic stromal lymphopoietin-mediated signal transduction.

Thymic stromal lymphopoietin (TSLP) is a cytokine that facilitates B lymphocyte differentiation and costimulates T cells. Previous studies have demonstrated that a functional TSLP receptor complex is a heterodimer consisting of the TSLP receptor and the IL-7R alpha-chain. TSLP- mediated signaling is unique among members of the cytokine receptor family in that activation of the transcription factor Stat5 occurs without detectable Janus kinase activation. Using a variety of biological systems we demonstrate here that TSLP- mediated Stat5 activation can be uncoupled from proliferation. We also show that the single tyrosine residue in the cytoplasmic domain of the TSLP receptor is critical for TSLP-mediated proliferation, but is dispensable for Stat5 activation. Our data demonstrate that TSLP- mediated Stat5 activation is insufficient for cell proliferation and identifies residues within the TSLP receptor complex required to mediate these downstream events.[1]

References

  1. Uncoupling of proliferation and Stat5 activation in thymic stromal lymphopoietin-mediated signal transduction. Isaksen, D.E., Baumann, H., Zhou, B., Nivollet, S., Farr, A.G., Levin, S.D., Ziegler, S.F. J. Immunol. (2002) [Pubmed]
 
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