The hormone aldosterone increases extracellular fluid volume and blood pressure by activating epithelial Na+ channels (ENaCs). Serum- and glucocorticoid-induced kinase 1 (SGK1) is an aldosterone-stimulated signaling molecule that enhances distal nephron Na+ transport, in part by preventing the internalization of ENaCs from the plasma membrane. In this issue of the JCI, Zhang et al. demonstrate that SGK1 enhances transcription of the α subunit of ENaC by preventing histone methylation, providing an additional mechanism by which SGK1 increases ENaC-mediated Na+ transport in the distal nephron (see the related article beginning on page 773).
David Pearce, Thomas R. Kleyman
Title and authors | Publication | Year |
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Trichostatin A blocks aldosterone‐induced Na + transport and control of serum‐ and glucocorticoid‐inducible kinase 1 in cortical collecting duct cells
MK Mansley, AJ Roe, SL Francis, JH Gill, MA Bailey, SM Wilson |
British Journal of Pharmacology | 2019 |