2012
DOI: 10.1007/s13238-012-2058-x
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Suppression of GSK3β by ERK mediates lipopolysaccharide induced cell migration in macrophage through β-catenin signaling

Abstract: We investigate the role of β-catenin signaling in the response of macrophage to lipopolysaccharide (LPS) using RAW264.7 cells. LPS rapidly stimulated cytosolic β-catenin accumulation. β-catenin-mediated transcription was showed to be required for LPS induced gene expression and cell migration. Mechanically, ERK activation-primed GSK3β inactivation by Akt was demonstrated to mediate the LPS induced β-catenin accumulation. Overall, our findings suggest that suppression of GSK3β by ERK stimulates β-catenin signal… Show more

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Cited by 26 publications
(25 citation statements)
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“…The non‐canonical Wnt5a‐induced immune‐activating signaling can be triggered by mycobacteria or isolated TLR ligands and results in increased expression of pro‐inflammatory cytokines . On the other hand, canonical Wnt3a‐mediated effects on Mϕ have been shown to down‐regulate glycogen synthase kinase‐3β, which led to decreased NF‐κB signaling and reduced pro‐inflammatory cytokine production . Our findings of canonical Wnt/β‐catenin signaling activation in the T‐cell suppressive M(IL‐13,‐10) subset fits with the immunosuppressive role of this pathway.…”
Section: Discussionsupporting
confidence: 72%
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“…The non‐canonical Wnt5a‐induced immune‐activating signaling can be triggered by mycobacteria or isolated TLR ligands and results in increased expression of pro‐inflammatory cytokines . On the other hand, canonical Wnt3a‐mediated effects on Mϕ have been shown to down‐regulate glycogen synthase kinase‐3β, which led to decreased NF‐κB signaling and reduced pro‐inflammatory cytokine production . Our findings of canonical Wnt/β‐catenin signaling activation in the T‐cell suppressive M(IL‐13,‐10) subset fits with the immunosuppressive role of this pathway.…”
Section: Discussionsupporting
confidence: 72%
“…Notably, our study revealed an up‐regulation of the canonical Wnt/β‐catenin signaling pathway in M(IL‐13,‐10). This pathway, which is best known for its role in regulating embryonic development, has also been described as being crucially involved in immune modulation and Mϕ function . Although Mϕ are known as a major source of different Wnt molecules, inducing tumor cell proliferation in a paracrine fashion, the role of Mϕ intrinsic Wnt/β‐catenin signaling is less clear .…”
Section: Discussionmentioning
confidence: 99%
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“…Interestingly, we observed that suppression of ERK1/2 activation by U1206 also attenuated GSK3β phosphorylation, which was accompanied by p21 destabilization, suggesting that ERK1/2 activation is the upstream event and is required for GSK phosphorylation. Gong et al also showed that ERK1/2 activation could induce GSK3 suppression by coupling AKT‐dependent phosphorylation . This is the first report, to our knowledge, that activated ERK1/2 repressed HCC growth by stabilizing p21 Waf/Cip1 .…”
Section: Resultsmentioning
confidence: 57%
“…Gong and colleagues reported that ERK could suppress GSK-3β activation, stimulate β-catenin signaling and induce cell migration in lipopolysaccharide-treated macrophages. 56 Additionally, radiation can also lead to the activation of MEK/ERK through the accumulation of reactive oxygen species and the resultant inactivation of GSK-3β, eventually leading to Snail nuclear retention and the promotion of mesenchymal phenotypic changes in lung carcinoma epithelial cells. 57 Although there is no direct evidence that MCP-1 can inactivate GSK-3β via ERK1/2, we hypothesize that MCP-1 can inhibit GSK-3β and activate Snail via the MEK/ERK signaling pathway.…”
Section: Mcp-1-induced Emt Of Mcf-7 Cells S LI Et Almentioning
confidence: 99%