Estradiol 3-methyl ether (EDME) is a highly selective TRPML1 ion channel antagonist and microtubule (microtubule) depolymerizing agent, with IC50 values of 0.22 µM and 3.8 µM against TRPML1 and TRPML2, respectively, it shows no activity against TRPML3. Estradiol 3-methyl ether induces the disruption of cytoplasmic microtubule networks in mammalian cells, with an EC50 of 9 µM. Independent of estrogen receptors, Estradiol 3-methyl ether blocks autophagy (autophagy), TFEB nuclear translocation, and inhibits the migration and invasion of triple-negative breast cancer cells by suppressing TRPML1. Estradiol 3-methyl ether is applicable for relevant research on triple-negative breast cancer[1][2].
