Ethaselen (BBSKE) 是选择性的硫氧还蛋白还原酶 (TrxR) 抑制剂，对野生型人 TrxR1 和大鼠 TrxR1 的 IC50 分别为 0.5 和 0.35 μM。Ethaselen 特异性结合哺乳动物 TrxR1 C 端活性位点中独特的硒代半胱氨酸-半胱氨酸氧化还原对。Ethaselen 是一种有机硒化合物，一种有效的抗肿瘤候选活性分子，可通过靶向 TrxR 对非小细胞肺癌 (NSCLC) 发挥有效抑制作用。 Ethaselen (BBSKE) is a selective thioredoxin reductase (TrxR) inhibitor with IC50s of 0.5 and 0.35 μM for the wild-type human TrxR1 and rat TrxR1, respectively. Ethaselen specifically binds to the unique selenocysteine-cysteine redox pair in the C-terminal active site of mammalian TrxR1. Ethaselen, an organoselenium compound, is a potent antitumor candidate that exerts potent inhibition on non-small cell lung cancer (NSCLC) by targeting TrxR.