Project 1: Targeting the MYC Pathway in Prostate Cancer
项目 1:靶向前列腺癌中的 MYC 通路
基本信息
- 批准号:10089063
- 负责人:
- 金额:$ 36.4万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-08-18 至 2026-07-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
PROJECT 1: ABSTRACT
MYC oncoproteins (including c-MYC, L-MYC and N-MYC) have been implicated in up to 70% of all human
cancers. In prostate cancer, elevated levels of MYC protein expression are observed across all grades. In
castration-resistant prostate cancer (CRPC), there is evidence of further upregulation of c-MYC levels with gene
amplification occurring in 45% of cases. In late-stage, therapy-resistant neuroendocrine prostate cancer (NEPC),
N-MYC is overexpressed in 40% of cases. In preclinical studies, inhibition of MYC can effectively kill CRPC and
NEPC cells. A viable therapeutic strategy to inhibit MYC is therefore likely to have a significant impact on this
disease and to fulfill the ongoing need for novel impactful therapies spanning the spectrum of castration resistant
prostate cancer. Despite its recognition as an attractive cancer target, MYC has proved difficult to target, and
there are currently no clinically viable small molecule MYC inhibitors (MYCi) available. By employing a
pharmacophore-based in silico screen of a large chemical library (32 million compounds) coupled to a rapid in
vivo screen in mice, we identified a series of novel small molecule inhibitors. These MYC inhibitors are highly
drug-like and have shown excellent pharmacokinetic, toxicological and anti-tumor activity profiles in MYC-driven
models of prostate cancer and leukemia. The compounds engage MYC inside cells as shown by the cellular
thermal shift assay (CETSA); disrupt MYC/MAX complex formation which is required for MYC activity; and inhibit
MYC-driven target gene expression. Furthermore, the MYCi compounds enhance phosphorylation of MYC on
threonine-58 (T58P) which promotes MYC degradation via a well-characterized ubiquitin-proteasome pathway.
Consequently, treatment with MYCi impaired tumorigenicity in vitro and in vivo. The goals of this project are to
develop the lead MYC inhibitor, MYCi975, for clinical application in the treatment of prostate cancer and to
characterize the mechanisms of MYCi-induced degradation of c-MYC and N-MYC oncoproteins. We will
implement the following Specific Aims: Aim 1 is to investigate the mechanisms of MYCi975 regulation of c-
MYC and N-MYC phosphorylation and stability and the potential of MYC pT58 as a pharmacodynamic marker.
Aim 2 will assess MYCi anti-tumor efficacy and impact on pharmacodynamic biomarkers in preclinical models
of c-MYC and N-MYC driven prostate cancer. Aim 3 will seek to develop MYCi975 for use in patients by
conducting formal IND-enabling toxicology studies and initiate a phase 1 trial in mCRPC patients.
Impact: Successful completion of these studies could lead to first-in-class therapies for lethal prostate cancers
dependent on c-MYC/N-MYC activity. This benefit can extend to other human cancers as well because of the
pervasive role MYC proteins play in cancers of all types.
项目1:摘要
MYC癌蛋白(包括C-MYC,L-MYC和N-MYC)已涉及多达70%的人类
癌症。在前列腺癌中,所有等级均观察到MYC蛋白表达的水平升高。在
costatration抗性前列腺癌(CRPC),有证据表明C-MYC水平进一步上调了基因
45%的病例发生放大。在后期,耐治疗的神经内分泌前列腺癌(NEPC),
N-MYC在40%的病例中过表达。在临床前研究中,抑制MYC可以有效地杀死CRPC和
NEPC细胞。因此,可行的抑制MYC的可行治疗策略可能对此产生重大影响
疾病并满足持续的持续影响跨越cast割的新型有影响力疗法的需求
前列腺癌。尽管MYC被认为是有吸引力的癌症靶标,但事实证明很难靶向。
目前尚无临床上可行的小分子MYC抑制剂(MYCI)。通过使用
在大型化学库(3200万种化合物)的硅屏幕中基于药效团
在小鼠中,我们确定了一系列新型的小分子抑制剂。这些MYC抑制剂高度高
类似药物,并且在MYC驱动的
前列腺癌和白血病的模型。这些化合物接合MYC内部细胞内部,如细胞所示
热移测定法(CETSA); MYC活动所需的MYC/MAX复杂形成;并抑制
MYC驱动的靶基因表达。此外,Myci化合物增强了MYC的磷酸化
苏氨酸-58(T58P)通过特征良好的泛素 - 蛋白酶体途径促进MYC降解。
因此,用myci治疗在体外和体内损害了肿瘤性。该项目的目标是
开发铅MYC抑制剂MyCI975,用于治疗前列腺癌和
表征Myci诱导的C-MYC和N-MYC癌蛋白降解的机制。我们将
实施以下具体目的:目标1是研究myci975 c-调节的机制
MYC和N-MYC磷酸化和稳定性以及MYC PT58作为药效标记的潜力。
AIM 2将评估临床前模型中的Myci抗肿瘤功效和对药效生物标志物的影响
C-MYC和N-MYC驱动的前列腺癌。 AIM 3将寻求开发Myci975,以在患者中使用
在MCRPC患者中进行正式的毒理学研究并启动1期试验。
影响:这些研究的成功完成可能会导致对致命前列腺癌的第一类疗法
取决于C-MYC/N-MYC活性。由于
普遍的角色MYC蛋白在所有类型的癌症中起着。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

暂无数据
数据更新时间:2024-06-01
Sarki A. Abdulkadi...的其他基金
Small molecule probes of MYC stability and function intumorigenesis
MYC稳定性和肿瘤发生功能的小分子探针
- 批准号:1057087310570873
- 财政年份:2021
- 资助金额:$ 36.4万$ 36.4万
- 项目类别:
Small molecule probes of MYC stability and function intumorigenesis
MYC稳定性和肿瘤发生功能的小分子探针
- 批准号:1036151210361512
- 财政年份:2021
- 资助金额:$ 36.4万$ 36.4万
- 项目类别:
Tumor immune and glycan biomarkers for progressive prostate cancer
进展性前列腺癌的肿瘤免疫和聚糖生物标志物
- 批准号:1030559210305592
- 财政年份:2017
- 资助金额:$ 36.4万$ 36.4万
- 项目类别:
Tumor immune and glycan biomarkers for progressive prostate cancer
进展性前列腺癌的肿瘤免疫和聚糖生物标志物
- 批准号:1005332410053324
- 财政年份:2017
- 资助金额:$ 36.4万$ 36.4万
- 项目类别:
Administrative, Leadership Development and Advocacy Core
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- 批准号:1008906010089060
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EPHB4 Receptor Kinase as a Target in Prostate Cancer
EPHB4 受体激酶作为前列腺癌的靶点
- 批准号:89324788932478
- 财政年份:2015
- 资助金额:$ 36.4万$ 36.4万
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Integrating Epigenomic and Nuclear Receptor Signaling in Castrate Resistant Prostate Cancer
整合表观基因组和核受体信号在去势抵抗性前列腺癌中的应用
- 批准号:91030139103013
- 财政年份:2015
- 资助金额:$ 36.4万$ 36.4万
- 项目类别:
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- 批准号:1047881110478811
- 财政年份:2015
- 资助金额:$ 36.4万$ 36.4万
- 项目类别:
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