Metabolic Control of Hair Follicle Stem Cell Homeostasis and Tumorigenesis

项目总结/摘要 目前的项目建立在我们以前的努力，以定义和表征癌细胞的起源， 表皮我们证明毛囊干细胞是鳞状细胞癌的起源细胞， 这些细胞固有的静止作为一种肿瘤抑制机制。现时的建议 试图了解代谢在维持HFSC中的作用，以及它们启动HFSC的能力， 肿瘤发生我们的初步数据表明，HFSCs具有独特的代谢模式，我们 试图了解这种代谢状态是否是维持这些细胞作为静止的多能干细胞所必需的 细胞我们将扩展我们对HFSC的表征，以包括代谢组学方法，并确定 代谢途径的改变是否破坏了它们的自我更新或分化。此外，与我们的 诱导型肿瘤起始模型，我们将能够表征任何代谢转变的全部程度， 这是第一次在体内发生。我们希望这些实验能够揭示调节细胞凋亡的新机制。 HFSC生物学，甚至可能指向HFSC引发的肿瘤的新靶向治疗。

PROJECT SUMMARY/ABSTRACT The current project builds on our previous efforts to define and characterize cancer cells of origin within the epidermis. We demonstrated that hair follicle stem cells are cells of origin for squamous cell carcinoma, and that the inherent quiescence of these cells acts as a tumor suppressor mechanism. The current proposal seeks to understand the role metabolism plays in both maintaining HFSCs, and also in their ability to initiate tumorigenesis. Our preliminary data suggests that HFSCs possess a unique mode of metabolism, and we seek to understand if this metabolic state is necessary to maintain these cells as quiescent, multipotent stem cells. We will extend our characterization of HFSCs to include metabolomics approaches and determine whether alteration of metabolic pathways disrupts their self-renewal or differentiation. Furthermore, with our inducible tumor initiation model, we will be able to characterize the full extent of any metabolic transitions that occur in vivo for the first time. We expect that these experiments will uncover novel mechanisms that regulate HFSC biology, and perhaps even point towards new targeted therapeutics for HFSC initiated tumors.