Department of Cancer Biology and Molecular Medicine, Cancer Center and Beckman Research Institute, City of Hope, Duarte, CA, USA.
Integrative Genomics Core, Cancer Center and Beckman Research Institute, City of Hope, Duarte, CA, USA.
Nat Commun. 2024 Feb 9;15(1):1231. doi: 10.1038/s41467-024-45489-4.
Androgen deprivation therapy (ADT) targeting androgen/androgen receptor (AR)- signaling pathways is the main therapy for advanced prostate cancer (PCa). However, ADT eventually fails in most patients who consequently develop castration-resistant prostate cancer (CRPC). While more potent AR antagonists and blockers for androgen synthesis were developed to improve clinical outcomes, they also show to induce more diverse CRPC phenotypes. Specifically, the AR- and neuroendocrine-null PCa, DNPC, occurs in abiraterone and enzalutamide-treated patients. Here, we uncover that current ADT induces aberrant HGF/MET signaling activation that further elevates Wnt/β-catenin signaling in human DNPC samples. Co-activation of HGF/MET and Wnt/β-catenin axes in mouse prostates induces DNPC-like lesions. Single-cell RNA sequencing analyses identify increased expression and activity of XPO1 and ribosomal proteins in mouse DNPC-like cells. Elevated expression of XPO1 and ribosomal proteins is also identified in clinical DNPC specimens. Inhibition of XPO1 and ribosomal pathways represses DNPC growth in both in vivo and ex vivo conditions, evidencing future therapeutic targets.
雄激素剥夺疗法(ADT)针对雄激素/雄激素受体(AR)信号通路,是治疗晚期前列腺癌(PCa)的主要方法。然而,ADT 最终会在大多数患者中失效,这些患者随后会发展为去势抵抗性前列腺癌(CRPC)。虽然开发了更有效的 AR 拮抗剂和雄激素合成抑制剂来改善临床结果,但它们也显示出诱导更多样化的 CRPC 表型。具体来说,在接受阿比特龙和恩扎卢胺治疗的患者中,出现了 AR 和神经内分泌缺失的前列腺癌(DNPC)。在这里,我们发现目前的 ADT 会导致异常的 HGF/MET 信号激活,进一步提高人 DNPC 样本中的 Wnt/β-catenin 信号。在小鼠前列腺中共同激活 HGF/MET 和 Wnt/β-catenin 轴会诱导出 DNPC 样病变。单细胞 RNA 测序分析确定了 XPO1 和核糖体蛋白在小鼠 DNPC 样细胞中的表达和活性增加。在临床 DNPC 标本中也发现了 XPO1 和核糖体蛋白的高表达。XPO1 和核糖体途径的抑制在体内和体外条件下均能抑制 DNPC 的生长,证明了未来的治疗靶点。