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J. Exp. Med.,
Volume 187, Number 12, June 15, 1998 2097-2101
B and JNK/SAPK Activation Upstream of Tumor
Necrosis Factor Receptor-associated Factor 6 (TRAF6)
By


From the * Department of Immunology and Cell Biology, Mario Negri Institute, I-20157 Milan,
Italy; The human homologue of Drosophila Toll (hToll) is a recently cloned receptor of the interleukin 1 receptor (IL-1R) superfamily, and has been implicated in the activation of adaptive immunity. Signaling by hToll is shown to occur through sequential recruitment of the adapter
molecule MyD88 and the IL-1R-associated kinase. Tumor necrosis factor receptor-activated
factor 6 (TRAF6) and the nuclear factor
Istituto di I Clinica Medica, Policlinico Umberto I, I-00161 Rome, Italy; and § Department of
Biotechnology, University of Brescia, 25123 Brescia, Italy
B (NF-
B)-inducing kinase (NIK) are both involved in subsequent steps of NF-
B activation. Conversely, a dominant negative version of
TRAF6 failed to block hToll-induced activation of stress-activated protein kinase/c-Jun NH2-terminal kinases, thus suggesting an early divergence of the two pathways.
B;
c-Jun NH2-terminal kinase/
stress-activated protein kinase
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