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- W2794333863 abstract "Enolase-1-dependent cell surface proteolysis plays an important role in cell invasion. Although enolase-1 (Eno-1), a glycolytic enzyme, has been found on the surface of various cells, the mechanism responsible for its exteriorization remains elusive. Here, we investigated the involvement of post-translational modifications (PTMs) of Eno-1 in its lipopolysaccharide (LPS)-triggered trafficking to the cell surface. We found that stimulation of human lung adenocarcinoma cells with LPS triggered the monomethylation of arginine 50 (R50me) within Eno-1. The Eno-1R50me was confirmed by its interaction with the tudor domain (TD) from TD-containing 3 (TDRD3) protein recognizing methylarginines. Substitution of R50 with lysine (R50K) reduced Eno-1 association with epithelial caveolar domains, thereby diminishing its exteriorization. Similar effects were observed when pharmacological inhibitors of arginine methyltransferases were applied. Protein arginine methyltransferase 5 (PRMT5) was identified to be responsible for Eno-1 methylation. Overexpression of PRMT5 and caveolin-1 enhanced levels of membrane-bound extracellular Eno-1 and, conversely, pharmacological inhibition of PRMT5 attenuated Eno-1 cell-surface localization. Importantly, Eno-1R50me was essential for cancer cell motility since the replacement of Eno-1 R50 by lysine or the suppression of PRMT 5 activity diminished Eno-1-triggered cell invasion. LPS-triggered Eno-1R50me enhances Eno-1 cell surface levels and thus potentiates the invasive properties of cancer cells. Strategies to target Eno-1R50me may offer novel therapeutic approaches to attenuate tumor metastasis in cancer patients." @default.
- W2794333863 created "2018-03-29" @default.
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- W2794333863 date "2018-05-01" @default.
- W2794333863 modified "2023-10-18" @default.
- W2794333863 title "Protein arginine methyltransferase 5 mediates enolase-1 cell surface trafficking in human lung adenocarcinoma cells" @default.
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- W2794333863 doi "https://doi.org/10.1016/j.bbadis.2018.02.021" @default.
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