Targeting chemoresistant prostate cancer with novel EED inhibitors

多西紫杉醇是治疗转移性去势耐药前列腺癌(PCa)的一线化疗药物， 前列腺癌死亡的原因。不幸的是，在大多数情况下，前列腺癌会产生多西他赛耐药，并继续 进步，这是无法治愈的。我们最近的研究(Theranostics，2021年5月8日；11：6873-6890)提供了 强有力的证据表明，化疗耐药的PCa细胞依赖于活性的EED-EZH2-STAT3-Skp2- ABCB1/Survivin信号传递生存和逃避标准化疗的信号。在这个R01项目中，我们假设 靶向EED-EZH2与新型EED抑制剂的相互作用有效地克服了化疗耐药和 消灭致命的前列腺癌细胞。在目标1中，我们将对新型电火工品进行合理的设计和化学优化 抑制剂。将设计和合成200个新的化学实体。在目标2中，我们将验证 化疗耐药的PCa细胞中电位导联的作用机制。我们将在体外和体内鉴定 新型EED抑制剂在多种异质临床前模型中对耐药前列腺癌的抑制作用 耐化疗的PCA。在目标3中，我们将进行良好实验室规范(GLP)和非GLP研究，以 评估先导化合物的类药物特性，包括药代动力学、吸收、分布、 代谢和排泄(ADME)、单次和重复剂量毒性和安全药理学。随着成功 这个项目的完成，我们预计将确定1~2个可申请专利的先导化合物，并将它们推进到 进一步的临床前和临床发展。首要目标是将我们的基础研究转化为 对致命性前列腺癌进行有效和安全的治疗，从而使患者受益并改善临床结果。

Docetaxel is the first-line chemotherapy for metastatic castration-resistant prostate cancer (PCa), the major cause of PCa mortality. Unfortunately, in most cases PCa develops docetaxel resistance and continues to progress, which has no cure. Our recent studies (Theranostics, 2021, May 8; 11: 6873-6890) have provided strong evidence demonstrating that chemoresistant PCa cells rely on an active EED-EZH2-Stat3-SKP2- ABCB1/survivin signaling to survive and evade standard chemotherapy. In this R01 project, we hypothesize that targeting EED-EZH2 interaction with novel EED inhibitors is effective to overcome chemoresistance and eliminate lethal PCa cells. In Aim 1, we will conduct rational design and chemical optimization of novel EED inhibitors. A total of 200 new chemical entities will be designed and synthesized. In Aim 2, We will validate the mechanism of action of potential leads in chemoresistant PCa cells. We will identify the in vitro and in vivo activities of new EED inhibitors against chemoresistant PCa in multiple, heterogenous preclinical models of chemoresistant PCa. In Aim 3, we will conduct Good Laboratory Practice (GLP) and non-GLP studies to evaluate the drug-like properties of lead compounds, including pharmacokinetics, absorption, distribution, metabolism, and excretion (ADME), single- and repeat-dose toxicity and safety pharmacology. With successful accomplishment of this project, we expect to identify 1~2 patentable lead compounds and advance them into further preclinical and clinical development. The overarching goal is to translate our basic research into an effective and safe treatment for lethal PCa, therefore benefiting patients and improving clinical outcomes.