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- W2767939008 abstract "Epithelial tissue requires that cells attach to each other and to the extracellular matrix by the assembly of adherens junctions (AJ) and focal adhesions (FA) respectively. We have previously shown that, in renal papillary collecting duct (CD) cells, both AJ and FA are located in sphingomyelin (SM)-enriched plasma membrane microdomains. In the present work, we investigated the involvement of SM metabolism in the preservation of the epithelial cell phenotype and tissue organization. To this end, primary cultures of renal papillary CD cells were performed. Cultured cells preserved the fully differentiated epithelial phenotype as reflected by the presence of primary cilia. Cells were then incubated for 24 h with increasing concentrations of D609, a SM synthase (SMS) inhibitor. Knock-down experiments silencing SMS 1 and 2 were also performed. By combining biochemical and immunofluorescence studies, we found experimental evidences suggesting that, in CD cells, SMS 1 activity is essential for the preservation of cell-cell adhesion structures and therefore for the maintenance of CD tissue/tubular organization. The inhibition of SMS 1 activity induced CD cells to lose their epithelial phenotype and to undergo an epithelial-mesenchymal transition (EMT) process." @default.
- W2767939008 created "2017-11-17" @default.
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- W2767939008 date "2018-02-01" @default.
- W2767939008 modified "2023-10-14" @default.
- W2767939008 title "The inhibition of sphingomyelin synthase 1 activity induces collecting duct cells to lose their epithelial phenotype" @default.
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- W2767939008 doi "https://doi.org/10.1016/j.bbamcr.2017.11.004" @default.
- W2767939008 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29128370" @default.
- W2767939008 hasPublicationYear "2018" @default.
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