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    題名: Genetic Suppressor Element 1 (GSE1) Promotes the Oncogenic and Recurrent Phenotypes of Castration-Resistant Prostate Cancer by Targeting Tumor-Associated Calcium Signal Transducer 2 (TACSTD2).
    作者: 吳佳璋
    Oluwaseun Adebayo Bamodu, Yuan-Hung Wang, Chen-Hsun Ho, Su-Wei Hu, Chia-Da Lin, Kai-Yi Tzou, Wen-Ling Wu, Kuan-Chou Chen and Chia-Chang Wu
    貢獻者: 醫學系泌尿學科
    關鍵詞: Keywords: prostate cancer;GSE1;TACSTD2;advanced disease;CRPC;castration resistance;therapy resistance;abiraterone;enzalutamide
    日期: 2021-08
    上傳時間: 2025-03-27 09:13:20 (UTC+8)
    摘要: Background: prostate cancer (PCa) is a principal cause of cancer-related morbidity and mortality. Castration resistance and metastasis are clinical challenges and continue to impede therapeutic success, despite diagnostic and therapeutic advances. There are reports of the oncogenic activity of genetic suppressor element (GSE)1 in breast and gastric cancers; however, its role in therapy resistance, metastasis, and susceptibility to disease recurrence in PCa patients remains unclear. Objective: this study investigated the role of aberrantly expressed GSE1 in the metastasis, therapy resistance, relapse, and poor prognosis of advanced PCa. Methods: we used a large cohort of multi-omics data and in vitro, ex vivo, and in vivo assays to investigate the potential effect of altered GSE1 expression on advanced/castration-resistant PCa (CRPC) treatment responses, disease progression, and prognosis. Results: using a multi-cohort approach, we showed that GSE1 is upregulated in PCa, while tumor-associated calcium signal transducer 2 (TACSTD2) is downregulated. Moreover, the direct, but inverse, correlation interaction between GSE1 and TACSTD2 drives metastatic disease, castration resistance, and disease progression and modulates the clinical and immune statuses of patients with PCa. Patients with GSE1highTACSTD2low?expression are more prone to recurrence and disease-specific death than their GSE1lowTACSTD2high?counterparts. Interestingly, we found that the GSE1–TACSTD2 expression profile is associated with the therapy responses and clinical outcomes in patients with PCa, especially those with metastatic/recurrent disease. Furthermore, we demonstrate that the shRNA-mediated targeting of GSE1 (shGSE1) significantly inhibits cell proliferation and attenuates cell migration and tumorsphere formation in metastatic PC3 and DU145 cell lines, with an associated suppression of VIM, SNAI2, and BCL2 and the concomitant upregulation of TACSTD2 and BAX. Moreover, shGSE1 enhances sensitivity to the antiandrogens abiraterone and enzalutamide in vitro and in vivo. Conclusion: these data provide preclinical evidence of the oncogenic role of dysregulated GSE1–TACSTD2 signaling and show that the molecular or pharmacological targeting of GSE1 is a workable therapeutic strategy for inhibiting androgen-driven oncogenic signals, re-sensitizing CRPC to treatment, and repressing the metastatic/recurrent phenotypes of patients with PCa.
    關聯: Cancers 2021, 13(16), 3959
    描述: 【112-1 升等】臺北醫學大學教師升等專門著作
    職別:專任
    送審等級:教授
    著作送審
    資料類型: article
    顯示於類別:[教師升等送審著作] 112
    [泌尿學科] 期刊論文

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