Mineralocorticoid and glucocorticoid receptor interaction drives TGFB1-induced triple-negative breast cancer progression to metastasis

bioRxiv Cancer Biology | |

In triple-negative breast cancer (TNBC), p38 MAPK phosphorylates the glucocorticoid receptor (GR) at N-terminal Ser134 in response to cytokines, such as TGF{beta}1. Phospho-Ser134-GR (pSer134-GR) regulates genes that promote migratory/invasive behavior and altered metabolism. In addition to acting as ligands for GR, glucocorticoids also activate closely-related mineralocorticoid receptors (MR). Elevated MR activity via its physiological ligand aldosterone (aldo), mediates hypertension, inflammation…

Topics: breast-cancer, research