Mitochondrial DNA Mutations in Prostate Tumorigenesis and Stromal-Epithelial Inte

线粒体！基本上在所有成人实体肿瘤中都发现了DNA突变，但仍有很大的需要 ：或对这些突变的功能和机制研究，以及它们如何影响恶性表型。我们的 首要目标是了解这些机制，以便设计出更有效的治疗和 供患者使用的诊断工具。因为我们有大量的病人资源，而且我们以前 在这些调查中的经验和经过证实的跟踪记录，我们处于独特的地位，可以执行严格的 前列腺癌mtDNA突变的研究。我们提供了线粒体DNA突变增强的初步数据 细胞活性氧与前列腺癌的生长，特别是在骨基质微环境中。 观察与前列腺癌骨转移有明显相关性。此外，我们已经开始确定 前列腺癌mtDNA突变相互作用的(有效)基因表达特征 上皮细胞和骨基质细胞，从而识别特定的信号通路(特别是成纤维细胞生长因子-1和 FAK)对此负有责任。因为这些突变在前列腺癌中非常常见，而且似乎 为了促进前列腺癌的生长和转移，我们将检验mtDNA的总体假设 前列腺癌基因突变在前列腺癌的发生和转移生长中起重要作用 在骨头里生存。为了验证这一假说，本文提出了三个具体目标。在第一个目标中，我们将 使用新的突变和新的前列腺癌核背景来确定突变对 不同的呼吸复合体，以及已发现的相同信号通路是否被激活。 线粒体DNA突变对活性氧(ROS)产生、肿瘤生长和基因表达的影响 被研究。在第二个目标中，我们将在体内和体外实验中操纵ROS来确定 这(ROS)是否是诱导成纤维细胞生长因子-1和粘着斑激酶(FAK)的关键信号通路 当线粒体DNA突变的前列腺癌细胞与骨基质细胞相互作用时观察到。第三个目标是 旨在确定临床转移是否涉及线粒体DNA突变增加及其影响 骨转移部位的适应性和细胞信号转导。 相关性(请参阅说明)： 线粒体的突变！DNA在前列腺癌中很常见，可以增强癌症的生长能力， 尤其是在骨头上。由于骨转移的有效治疗方法很少，我们将研究 这些突变是如何让这种致命的前列腺癌生长的。通过了解这是如何工作的 人们希望有一天可以针对这种高度恶性的疾病设计新的治疗方法。

Mitochondria! DNA mutations are found in essentially all adult solid tumors yet there remains a great need :or functional and mechanistic studies of these mutations and how they affect the malignant phenotype. Our jroad overarching goal is to understand these mechanisms in order to design more effective therapeutic and diagnostic tools for patient use. Because of our significant patient resources and our substantial previous experience and proven track record in these investigations, we are uniquely positioned to perform rigorous studies of mtDNA mutations in prostate cancer. We present preliminary data that mtDNA mutations enhance cellular reactive oxygen and prostate tumor growth, especially in the bone stromal microenvironment, an observation with obvious relevance to prostate cancer bone metastases. Further, we have begun to identify the (validated) gene expression signature of the interaction between mtDNA mutations in prostate cancer epithelial cells and bone stromal cells, thereby identifying specific signaling pathways (notably FGF-1 and FAK) responsible for this effect. Because these mutations are so common in prostate cancer and appear to be enhancing prostate tumor growth and metastasis, we will test the overall hypothesis that mtDNA mutations in prostate cancer are functionally important in prostate tumorigenesis and metastatic growth and survival in bone. In order to test this hypothesis, three specific aims are proposed. In the first aim we will use new mutations and new prostate cancer nuclear backgrounds to determine the effect of mutations in different respiratory complexes and whether the same signaling pathways already discovered are activated. The effect of mtDNA mutations on reactive oxygen (ROS) production, tumor growth and gene expression will be studied. In the second aim, we will manipulate ROS in both in vivo and in vitro experiments to determine whether this (ROS) is the key signaling pathway for the induction of FGF-1 and focal adhesion kinase (FAK) observed when prostate cancer cells with mtDNA mutation interact with bone stromal cells. The third aim is designed to determine whether clinical metastasis involves increased mtDNA mutation and how this affects adaptation in the bone metastatic site and cell signaling. RELEVANCE (See instructions): Mutations in mitochondria! DNA are common in prostate cancer and enhance the cancer's ability to grow, especially in the bone. Because there are so few effective treatments for bone metastases, we will study the ways that these mutations allow this fatal form of prostate cancer to grow. By understanding how this works it is hoped that new treatments may one day be designed targeting this highly malignant form of the disease.