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• W4289745900 endingPage "110431" @default.
• W4289745900 startingPage "110431" @default.
• W4289745900 abstract "The ERK signaling pathway, consisting of core protein kinases Raf, MEK and effector kinases ERK1/2, regulates various biological outcomes such as cell proliferation, differentiation, apoptosis, or cell migration. Signal transduction through the ERK signaling pathway is tightly controlled at all levels of the pathway. However, it is not well understood whether ERK pathway signaling can be modulated by the abundance of ERK pathway core kinases. In this study, we investigated the effects of low-level overexpression of the ERK2 isoform on the phenotype and scattering of cuboidal MDCK epithelial cells growing in discrete multicellular clusters. We show that ERK2 overexpression reduced the vertical size of lateral membranes that contain cell-cell adhesion complexes. Consequently, ERK2 overexpressing cells were unable to develop cuboidal shape, remained flat with increased spread area and intercellular adhesive contacts were present only on the basal side. Interestingly, ERK2 overexpression was not sufficient to increase phosphorylation of multiple downstream targets including transcription factors and induce global changes in gene expression, namely to increase the expression of pro-migratory transcription factor Fra1. However, ERK2 overexpression enhanced HGF/SF-induced cell scattering as these cells scattered more rapidly and to a greater extent than parental cells. Our results suggest that an increase in ERK2 expression primarily reduces cell-cell cohesion and that weakened intercellular adhesion synergizes with upstream signaling in the conversion of the multicellular epithelium into single migrating cells. This mechanism may be clinically relevant as the analysis of clinical data revealed that in one type of cancer, pancreatic adenocarcinoma, ERK2 overexpression correlates with a worse prognosis." @default.
• W4289745900 created "2022-08-04" @default.
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• W4289745900 date "2022-11-01" @default.
• W4289745900 modified "2023-10-01" @default.
• W4289745900 title "ERK2 signaling regulates cell-cell adhesion of epithelial cells and enhances growth factor-induced cell scattering" @default.
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• W4289745900 doi "https://doi.org/10.1016/j.cellsig.2022.110431" @default.
• W4289745900 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35933033" @default.
• W4289745900 hasPublicationYear "2022" @default.
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