Identification of an Orally Bioavailable Chromene-Based Selective Estrogen Receptor Degrader (SERD) That Demonstrates Robust Activity in a Model of Tamoxifen-Resistant Breast Cancer
作者:Johnny Nagasawa、Steven Govek、Mehmet Kahraman、Andiliy Lai、Celine Bonnefous、Karensa Douglas、John Sensintaffar、Nhin Lu、KyoungJin Lee、Anna Aparicio、Josh Kaufman、Jing Qian、Gang Shao、Rene Prudente、James D. Joseph、Beatrice Darimont、Daniel Brigham、Kate Maheu、Richard Heyman、Peter J. Rix、Jeffrey H. Hager、Nicholas D. Smith
DOI:10.1021/acs.jmedchem.8b00921
日期:2018.9.13
antihormonal agents. However, fulvestrant must be administered by intramuscular injections that limit its efficacy. We describe the optimization of ER-α degradation efficacy of a chromene series of ER modulators resulting in highly potent and efficacious SERDs such as 14n. When examined in a xenograft model of tamoxifen-resistant breast cancer, 14n (ER-α degradation efficacy = 91%) demonstrated robust activity
大约75%的乳腺癌是雌激素受体α(ER-α)阳性,女性通常最初对他莫昔芬和芳香酶抑制剂等抗激素疗法反应良好,但常常会出现耐药性。Fulvestrant是一种基于类固醇的选择性雌激素受体降解剂(SERD),可拮抗和降解ER-α,并且在抗激素药物治疗的患者中显示出一定的活性。然而,氟维司群必须通过肌内注射来限制其功效。我们描述了色烯系列ER调节剂的ER-α降解功效的优化,可导致高效和高效的SERD,例如14n。在耐他莫昔芬的异种移植模型中检查时,14n(ER-α降解功效= 91%)表现出强劲的活性,而尽管口服量较高,但15克(ER-α降解功效= 82%)基本上没有活性。该结果表明,在MCF-7细胞系中优化ER-α降解功效可导致化合物在源自MCF-7背景的他莫昔芬抗性乳腺癌模型中具有强大的作用。