Endoxifen Z-isomer hydrochloride盐酸盐是最重要的Tamoxifen代谢产物, 诱导在表达ERα的乳腺癌细胞中发挥抗雌激素作用, Endoxifen抑制hERG, 这种作用具有浓度依赖性, IC50值为1.6μM。

Endoxifen Z-isomer hydrochloride is the most important Tamoxifen metabolite responsible for eliciting the anti-estrogenic effects of this drug in breast cancer cells expressing estrogen receptor-alpha (ERα). Endoxifen inhibits hERG tail currents at 50 mV in a concentration-dependent manner with IC50 values of 1.6 μM. IC50 value: 1.6 μM [1] Target: hERG Potassium Channel, Estrogen Receptor/ERR Endoxifen is considered a prodrug, since it has a much higher potency for the estrogen receptor than its parent drug. Endoxifen inhibits the hERG channel protein trafficking to the plasma membrane in a concentration-dependent manner with Endoxifen being more potent than Tamoxifen. [1] Endoxifen is also shown to be a more potent inhibitor of estrogen target genes when ERβ is expressed. Additionally, low concentrations of Endoxifen observed in Tamoxifen tre

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[1]. Chae YJ, et al. Endoxifen, the active metabolite of tamoxifen, inhibits cloned hERG potassium channels. Eur J Pharmacol. 2015 Apr 5;752:1-7.
[2]. Wu X, et al. Estrogen receptor-beta sensitizes breast cancer cells to the anti-estrogenic actions of endoxifen. Breast Cancer Res. 2011 Mar 10;13(2):R27.

In Vitro: DMSO : 50 mg/mL (121.97 mM; Need ultrasonic)配制储备液