In Vivo Metabolic Catastrophe Is Induced By Acute Oncogene Inhibition (PQ #22)

体内代谢灾难是由急性癌基因抑制（PQ

基本信息

批准号：
8513950
负责人：
ANDREI GOGA
金额：
$ 57.36万
依托单位：
UNIVERSITY OF CALIFORNIA, SAN FRANCISCO
依托单位国家：
美国
项目类别：
财政年份：
2012
资助国家：
美国
起止时间：
2012-08-01 至 2016-05-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/8513950
关键词：
Acute Address Anabolism Automobile Driving Breast Cancer Biology Cancer Model Cell Cycle Arrest Cell Death Cell Survival Cells Citric Acid Cycle Cultured Tumor Cells Data Development Event Gene Expression Generations Genes Genetic Glycolysis Goals Histocompatibility Testing Human Image Imaging technology Knowledge Lactate Dehydrogenase Liver neoplasms Lung Neoplasms Maintenance Malignant Neoplasms Malignant neoplasm of liver Mammary Neoplasms Mass Spectrum Analysis Metabolic Metabolic Pathway Modeling Neoplasm Metastasis Oncogenes Oncogenic Oxidative Phosphorylation Pathway Analysis Pathway interactions Phenotype Primary Neoplasm Production Proteins Protons Pyruvate Research Signal Pathway Signal Transduction Testing Transgenic Organisms Translating Tumor Tissue Warburg Effect Work base cancer cell cancer regression in vivo innovation insight magnetic resonance spectroscopic imaging meetings metabolomics neoplastic cell novel novel therapeutics pyruvate dehydrogenase tumor

项目摘要

DESCRIPTION (provided by applicant): Despite our rapidly growing understanding of how oncogenes signal, relatively little is known about the underlying mechanisms that cause abrupt cell cycle arrest, cell death and tumor regression upon acutely inactivating an oncogene. This application seeks to address NIH's Provocative Question #22: Why do many cancer cells die when suddenly deprived of a protein encoded by an oncogene? We propose that acute inactivation of different oncogenes in diverse tissue types results in a common 'metabolic catastrophe.' Acute inhibition of driver oncogenes results in widespread collapse of tumor-associated metabolic reprograming. The resulting metabolic state of tumor cells can neither supply them with sufficient energy nor metabolic intermediates for anabolism resulting in a state of 'metabolic catastrophe' resulting in tumor cell death and regression of cancers. The aims of the application seek to: 1) Use innovative hyperpolarized 13C-pyruvate imaging to visualize the earliest metabolic events associate with tumor regression. 2) We will perform global gene expression and metabolomic profiling of liver cancers driven by MYC, RAS or MYC and RAS together to define metabolic pathways altered as a consequence of acute oncogene inactivation. 3) We will compare the metabolic consequences of oncogene inactivation in diverse tissue types, including breast, lung and liver tumors to define which oncogene-regulated metabolic pathways are common across different tissue types and driver oncogenes. The overarching goal of these studies is to identify metabolic pathways critical for tumor survival, against which novel therapeutics can be developed.

描述（由申请人提供）：尽管我们对癌基因如何发出信号的了解迅速加深，但对于癌基因急剧失活后导致细胞周期突然停滞、细胞死亡和肿瘤消退的潜在机制知之甚少。该申请旨在解决 NIH 的挑衅性问题 #22：为什么许多癌细胞在突然失去癌基因编码的蛋白质时会死亡？我们认为不同组织类型中不同癌基因的急性失活会导致常见的“代谢灾难”。驱动癌基因的急性抑制导致肿瘤相关代谢重编程的广泛崩溃。由此产生的肿瘤细胞代谢状态既不能为它们提供足够的能量，也不能为合成代谢提供代谢中间体，从而导致“代谢灾难”状态，从而导致肿瘤细胞死亡和癌症消退。该应用的目标是：1) 使用创新的超极化 13C-丙酮酸成像来可视化与肿瘤消退相关的最早代谢事件。 2) 我们将对 MYC、RAS 或 MYC 和 RAS 共同驱动的肝癌进行全局基因表达和代谢组学分析，以确定因急性癌基因失活而改变的代谢途径。 3）我们将比较不同组织类型（包括乳腺、肺和肝脏肿瘤）中癌基因失活的代谢后果，以确定哪些癌基因调节的代谢途径在不同组织类型和驱动癌基因中是常见的。这些研究的首要目标是确定对肿瘤生存至关重要的代谢途径，并根据这些途径开发新的治疗方法。