Summary
Using fluorescent probes to selectively label glutathione (GSH) in living, cultured rat hepatocytes, and image analysis, we detected a compartmentation of GSH in the nucleus. A nuclear GSH concentration of 15 mM, and a cytosolic GSH concentration of 4.5 mM, with a concentration gradient of approximately 3, was present in these cells. This gradient was maintained by ATP-requiring process(es) and a GSH-stimulated ATPase activity was discovered in isolated rat liver nuclei. A critical role of nuclear GSH as cofactor of peroxidase(s), transferase(s) and thiol-disulfide oxidoreductase(s) can be envisaged in protecting DNA and other nuclear structures from oxidative and chemical injury as well as in the physiological control of chromatin conformation.
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© 1993 Birkhäuser Verlag Basel/Switzerland
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Bellomo, G., Vairetti, M., Palladini, G., Mirabelli, F., Stivala, L., Richelmi, P. (1993). A Nuclear Pool of Glutathione in Hepatocytes. In: Poli, G., Albano, E., Dianzani, M.U. (eds) Free Radicals: from Basic Science to Medicine. Molecular and Cell Biology Updates. Birkhäuser Basel. https://doi.org/10.1007/978-3-0348-9116-5_34
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DOI: https://doi.org/10.1007/978-3-0348-9116-5_34
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