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• W2012781388 abstract "SLC7A11 encodes a subunit of the xCT cystine/glutamate amino-acid transport system and has a critical role in the generation of glutathione and the protection of cells from oxidative stress. Expression of SLC7A11 promotes tumorigenesis and chemotherapy resistance, but while SLC7A11 has been previously noted to be upregulated in hypoxic cells, its regulation has not been fully delineated. We have recently shown that nonsense-mediated RNA decay (NMD) is inhibited by cellular stresses generated by the tumor microenvironment, including hypoxia, and augments tumorigenesis. Here we demonstrate that the inhibition of NMD by various cellular stresses leads to the stabilization and upregulation of SLC7A11 mRNA and protein. The inhibition of NMD and upregulation of SLC7A11 augments intracellular cystine transport and increases intracellular levels of cysteine and glutathione. Accordingly, the inhibition of NMD protects cells against oxidative stress via SLC7A11 upregulation. Together our studies identify a mechanism for the dynamic regulation of SLC7A11, through the stress-inhibited regulation of NMD, and add to the growing evidence that the inhibition of NMD is an adaptive response." @default.
• W2012781388 created "2016-06-24" @default.
• W2012781388 creator A5052807839 @default.
• W2012781388 creator A5083381067 @default.
• W2012781388 date "2014-11-17" @default.
• W2012781388 modified "2023-09-26" @default.
• W2012781388 title "Stress-induced inhibition of nonsense-mediated RNA decay regulates intracellular cystine transport and intracellular glutathione through regulation of the cystine/glutamate exchanger SLC7A11" @default.
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• W2012781388 doi "https://doi.org/10.1038/onc.2014.352" @default.
• W2012781388 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4433865" @default.
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