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PMID |
Sentence |
1 |
11087679
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It is directly involved in diseases such as cancer (by controlling apoptosis and the levels of beta-catenin and cyclin D1), Alzheimer's disease (tau hyperphosphorylation), and diabetes (as a downstream element of insulin action, GSK-3 regulates glycogen and lipid synthesis).
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2 |
11087679
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Axin is a docking protein which interacts with GSK-3ss, beta-catenin, phosphatase 2A, and APC.
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3 |
11430833
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Significantly, this mutation does not affect phosphorylation of "nonprimed" substrates in the Wnt-signaling pathway (Axin and beta-catenin), suggesting new approaches to design more selective GSK3 inhibitors for the treatment of diabetes.
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4 |
11955436
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Control of beta-catenin phosphorylation/degradation by a dual-kinase mechanism.
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5 |
11955436
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Wnt regulation of beta-catenin degradation is essential for development and carcinogenesis. beta-catenin degradation is initiated upon amino-terminal serine/threonine phosphorylation, which is believed to be performed by glycogen synthase kinase-3 (GSK-3) in complex with tumor suppressor proteins Axin and adnomatous polyposis coli (APC).
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6 |
11955436
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Here we describe another Axin-associated kinase, whose phosphorylation of beta-catenin precedes and is required for subsequent GSK-3 phosphorylation of beta-catenin.
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7 |
11955436
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Depletion of CKIalpha inhibits beta-catenin phosphorylation and degradation and causes abnormal embryogenesis associated with excessive Wnt/beta-catenin signaling.
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8 |
11955436
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Our study uncovers distinct roles and steps of beta-catenin phosphorylation, identifies CKIalpha as a component in Wnt/beta-catenin signaling, and has implications to pathogenesis/therapeutics of human cancers and diabetes.
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9 |
12711303
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Among the subtypes, DCAPL3 shows significant homology with CAP, an essential component of glucose transport in insulin signal.
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10 |
12711303
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Further binding assay revealed that DCAP binds to not only Axin but also Arrow, and Axin binds to not only GSK3beta but also Arrow.
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11 |
12711303
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Moreover, early stage embryos lacking maternal Axin show significant delay of initial glycogen decomposition, and RNAi of Axin in S2 cells revealed quite increase of endogenous glycogen level as well as GSK3beta.
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12 |
12711303
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In addition, the interaction among Axin, Arrow, and DCAP implies a possible cross-talk between Wnt signal and insulin signal.
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13 |
12711303
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Among the subtypes, DCAPL3 shows significant homology with CAP, an essential component of glucose transport in insulin signal.
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14 |
12711303
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Further binding assay revealed that DCAP binds to not only Axin but also Arrow, and Axin binds to not only GSK3beta but also Arrow.
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15 |
12711303
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Moreover, early stage embryos lacking maternal Axin show significant delay of initial glycogen decomposition, and RNAi of Axin in S2 cells revealed quite increase of endogenous glycogen level as well as GSK3beta.
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16 |
12711303
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In addition, the interaction among Axin, Arrow, and DCAP implies a possible cross-talk between Wnt signal and insulin signal.
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17 |
12711303
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Among the subtypes, DCAPL3 shows significant homology with CAP, an essential component of glucose transport in insulin signal.
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18 |
12711303
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Further binding assay revealed that DCAP binds to not only Axin but also Arrow, and Axin binds to not only GSK3beta but also Arrow.
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19 |
12711303
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Moreover, early stage embryos lacking maternal Axin show significant delay of initial glycogen decomposition, and RNAi of Axin in S2 cells revealed quite increase of endogenous glycogen level as well as GSK3beta.
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20 |
12711303
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In addition, the interaction among Axin, Arrow, and DCAP implies a possible cross-talk between Wnt signal and insulin signal.
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21 |
15507471
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The proinvasive activity of Wnt-2 is mediated through a noncanonical Wnt pathway coupled to GSK-3beta and c-Jun/AP-1 signaling.
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22 |
15507471
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Here, we show that two activators of the canonical Wnt/beta-catenin transcription pathway, namely Dvl-2, the Axin 501-560 fragment binding glycogen synthase kinase -3beta (GSK-3beta), and the negative Wnt regulator wt-Axin did not alter cell invasion into type I collagen.
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23 |
15507471
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In addition, both Dvl-2 and Axin 501-560 exerted a permissive action on the proinvasive activity of HGF and intestinal trefoil factor.
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24 |
15507471
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Upstream activation of Wnt signaling by the Wnt-2 and Wnt-3a ligands, stable overexpression of Wnt-2, as well as GSK-3beta inhibition by lithium, SB216763, and GSK-3beta dominant negative forms (K85R and R96E) conferred the invasive phenotype through several proinvasive pathways.
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25 |
15507471
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Induction of the matrix metalloprotease MMP-7 (matrilysin) gene and protein by Wnt-2 was abolished by inactivation of the AP-1 binding site in the promoter.
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26 |
15507471
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Accordingly, invasion induced by Wnt-2 was prevented by soluble FRP-3 and FRP-1, sequestration of Gbetagamma subunits, depletion of the GSK-3beta protein by RNA interference, the c-Jun dominant negative mutant TAM67 and was not reversed by wt-Axin.
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27 |
15507471
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Thus, the proinvasive activity of Wnt-2 is mediated by a noncanonical Wnt pathway using GSK-3beta and the AP-1 oncogene.
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28 |
15507471
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The proinvasive activity of Wnt-2 is mediated through a noncanonical Wnt pathway coupled to GSK-3beta and c-Jun/AP-1 signaling.
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29 |
15507471
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Here, we show that two activators of the canonical Wnt/beta-catenin transcription pathway, namely Dvl-2, the Axin 501-560 fragment binding glycogen synthase kinase -3beta (GSK-3beta), and the negative Wnt regulator wt-Axin did not alter cell invasion into type I collagen.
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30 |
15507471
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In addition, both Dvl-2 and Axin 501-560 exerted a permissive action on the proinvasive activity of HGF and intestinal trefoil factor.
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31 |
15507471
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Upstream activation of Wnt signaling by the Wnt-2 and Wnt-3a ligands, stable overexpression of Wnt-2, as well as GSK-3beta inhibition by lithium, SB216763, and GSK-3beta dominant negative forms (K85R and R96E) conferred the invasive phenotype through several proinvasive pathways.
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32 |
15507471
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Induction of the matrix metalloprotease MMP-7 (matrilysin) gene and protein by Wnt-2 was abolished by inactivation of the AP-1 binding site in the promoter.
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33 |
15507471
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Accordingly, invasion induced by Wnt-2 was prevented by soluble FRP-3 and FRP-1, sequestration of Gbetagamma subunits, depletion of the GSK-3beta protein by RNA interference, the c-Jun dominant negative mutant TAM67 and was not reversed by wt-Axin.
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34 |
15507471
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Thus, the proinvasive activity of Wnt-2 is mediated by a noncanonical Wnt pathway using GSK-3beta and the AP-1 oncogene.
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35 |
16478782
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Regulation of dishevelled and beta-catenin in rat skeletal muscle: an alternative exercise-induced GSK-3beta signaling pathway.
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36 |
16478782
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beta-catenin is a multifunctional protein involved in cell-cell adhesion and the Wnt signaling pathway. beta-Catenin is activated upon its dephosphorylation, an event triggered by Dishevelled (Dvl)-mediated phosphorylation and deactivation of glycogen synthase kinase-3beta (GSK-3beta).
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37 |
16478782
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In skeletal muscle, both insulin and exercise decrease GSK-3beta activity, and we tested the hypothesis that these two stimuli regulate beta-catenin.
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38 |
16478782
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Immunoblotting demonstrated that Dvl, Axin, GSK-3beta, and beta-catenin proteins are expressed in rat red and white gastrocnemius muscles.
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39 |
16478782
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Treadmill running exercise in vivo significantly decreased beta-catenin phosphorylation in both muscle types, with complete dephosphorylation being elicited by maximal exercise. beta-Catenin dephosphorylation was intensity dependent, as dephosphorylation was highly correlated with muscle glycogen depletion during exercise (r(2) = 0.84, P < 0.001). beta-Catenin dephosphorylation was accompanied by increases in GSK-3beta Ser(9) phosphorylation and Dvl-GSK-3beta association.
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40 |
16478782
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In contrast to exercise, maximal insulin treatment (1 U/kg body wt) had no effect on skeletal muscle beta-catenin phosphorylation or Dvl-GSK-3beta interaction.
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41 |
16478782
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In conclusion, exercise in vivo, but not insulin, increases the association between Dvl and GSK-3beta in skeletal muscle, an event paralleled by beta-catenin dephosphorylation.
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42 |
20080974
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Glycogen synthase kinase-3 (GSK-3) isoforms, GSK-3alpha and GSK-3beta, are serine/threonine kinases involved in numerous cellular processes and diverse diseases, including Alzheimer disease, cancer, and diabetes.
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43 |
20080974
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Here, we describe a structure-function analysis of GSK-3alpha and GSK-3beta in mammalian cells.
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44 |
20080974
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We examined the effect of these mutations on GSK-3 activity toward Tau, activity in Wnt signaling, interaction with Axin, and GSK-3alpha/beta Tyr(279/216) phosphorylation.
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45 |
20357182
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Curcumin-induced suppression of adipogenic differentiation is accompanied by activation of Wnt/beta-catenin signaling.
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46 |
20357182
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Curcumin inhibited mitogen-activated protein kinase (MAPK) (ERK, JNK, and p38) phosphorylation that was associated with differentiation of 3T3-L1 cells into adipocytes.
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47 |
20357182
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During differentiation, curcumin also restored nuclear translocation of the integral Wnt signaling component beta-catenin in a dose-dependent manner.
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48 |
20357182
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In parallel, curcumin reduced differentiation-stimulated expression of CK1alpha, GSK-3beta, and Axin, components of the destruction complex targeting beta-catenin.
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49 |
20357182
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Accordingly, quantitative PCR analysis revealed that curcumin inhibited the mRNA expression of AP2 (mature adipocyte marker) and increased the mRNA expression of Wnt10b, Fz2 (Wnt direct receptor), and LRP5 (Wnt coreceptor).
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50 |
20357182
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Curcumin also increased mRNA levels of c-Myc and cyclin D1, well-known Wnt targets.
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