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This study set out to search for a link between overproduction of Aβ and p70S6 kinase (p70S6K) phosphorylation/activation. Results showed that levels of p-p70S6K at T421/S424 and T389 are significantly increased in mouse N2a neuroblastoma cells carrying human APP with Swedish mutation (APPswe), and in transgenic APPswe/PS1 (A246E) mice as compared with respective controls, corresponding to the increase...
Currently, we found that the 70-kDa p70 S6 kinase (p70S6K) directly phosphorylates tau at S262, S214, and T212 sites in vitro. By immunoprecipitation, p-p70S6K (T421/S424) showed a close association with p-tau (S262 and S396/404). Zinc-induced p70S6K activation could only upregulate translation of total S6 and tau but not global proteins in SH-SY5Y cells. The requirement of p70S6K activation was confirmed...
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