Conditionally Reprogrammed Cell Model for Castration-Resistant Prostate Cancer (CRPC)

去势抵抗性前列腺癌 (CRPC) 的条件重编程细胞模型

• 批准号: 10336637
• 负责人: Xuefeng Liu
• 金额: $ 36.5万
• 依托单位: OHIO STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-06-01 至 2023-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10336637
• 关键词: Conditionally; Reprogrammed; Cell; Model; Castration

Prostate cancer (PCa) is the most frequently diagnosed cancer (180,890 new cases in 2016) in men in the USA. Androgen deprivation therapy (ADT) is an effective first line therapy for locally advanced or metastatic disease. Unfortunately, once PCa recurs, the eventual development of castration-resistant prostate cancer (CRPC) remains an incurable disease and more effective therapies are needed. Currently, a limited number of cancer cell lines (LnCAP, PC3, DU-145, etc.) are available for research and many genetic mutations present in prostate cancer (e.g., SPOP mutation, FOXA1 mutation, TMPRSS2-ERG fusion, CHD1 loss) are not represented in such cells. New patient-derived cancer models are needed. However, patient-derived xenograft (PDX) models are successful at less than 2-5% efficiency with aggressive, high-grade metastatic tumors and organoid cultures only have an efficiency of 20%. However, our preliminary data demonstrate that conditional reprogramming (CR) has nearly a 100% success rate for establishing long-term cultures from either surgical prostate specimens or CT-guided biopsies. In this application, we propose the following specific aims to validate the potential of CR for translational use in human CRPC. We will first establish CR cultures from biopsies of 30 patients with CRPC and will characterize these culture genetically and phenotypically. Second, we compare the patients' drug response to those of corresponding tumor CR cells and their derivative CR- derived xenografts (CDXs). Lastly, we will use CR cultures in an unbiased high-throughput screen to identify new potential therapies for CRPC in collaboration with Dr. Craig Thomas at National Center for Advanced Translational Sciences (NCATS). New “hits” from the screen will be validated by both in vitro cell assays and xenograft models.

前列腺癌（PCA）是男性最常见的癌症（2016年180,890个新的Casses） 美国。雄激素剥夺疗法（ADT）是一种有效的第一线治疗 疾病。 （CRPC）仍然是一种无法治愈的疾病，目前需要更有效的疗法。 癌细胞系（LNCAP，PC3，DU-145等）可用于研究，许多基因杂种都存在于 前列腺癌（例如，SPOP突变，FOXA1突变，TMPRSS2-RG融合，CHD1损失） 但是，需要在这种新的患者衍生的模型中进行抑制 （PDX）模型在不到2-5％的功效下成功，具有侵略性的高级转移性肿瘤和 器官培养物的效率为20％。 复制程序（CR）的成功率将近100％，用于建立两种手术的长期培养 前列腺标本或CT指导的活检。 验证CR在人类CRPC中的转化潜力。 30例CRPC患者的活检，将以表型为特征。 我们将患者的药物反应与Corpong肿瘤CR细胞和衍生物CR-的药物反应进行比较 派生的Xenograph（CDX）。 CRPC的新潜在疗法与国家高级中心的Craig Thomas博士合作 翻译科学（NCAT）将通过体外细胞分析验证屏幕的新“命中” Xenograph模型。