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

NK cytokine secretion and cytotoxicity occur independently of the SLP-76 adaptor protein.

The adapter protein SLP-76 is required for T cell development and TCR signal transduction. SLP-76 is also expressed in NK cells, yet splenic populations of NK cells develop normally in SLP-76-deficient mice. We examined the effects of SLP-76 deficiency upon cellular activation through studies of NK function in SLP-76(-/-) mice. This study presents evidence that NK populations in both spleen and liver of SLP-76(-/-) mice remain intact. Natural cytotoxic responses of SLP-76(-/-) splenocytes proceed in a manner comparable to those of wild-type control splenocytes. Similar to controls, SLP-76(-/-) splenocytes exhibit enhanced survival and augmented cytotoxic capacity after in vitro culture with IL-2. IL-2- stimulated SLP-76(-/-) splenocytes also retain normal antibody-dependent cellular cytotoxicity and the ability to secrete IFN-gamma in response to IL-12 stimulation. These results indicate that, unlike events stimulated by TCR engagement, signaling cascades engaged by IL-2 and IL-12 receptors, by Fc gammaRIIIA (which mediates antibody-dependent cellular cytotoxicity), and by natural cytotoxicity-associated receptors on murine NK cells can occur independently of SLP-76.[1]

References

  1. NK cytokine secretion and cytotoxicity occur independently of the SLP-76 adaptor protein. Peterson, E.J., Clements, J.L., Ballas, Z.K., Koretzky, G.A. Eur. J. Immunol. (1999) [Pubmed]
 
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