Thermoscientific TSQ Vantage Mass Spectrometer

描述(由申请人提供)：该提案申请资金购买一台三重四极杆质谱仪，以支持由NIH资助的12个项目，这些项目由弗雷德·哈钦森癌症研究中心(FHCRC)的9名主要研究人员以及华盛顿大学和儿童医院的癌症联盟成员领导。将从这种仪器中受益的项目涵盖了对癌症研究很重要的各种领域。具体地说，该仪器将用于了解丝氨酸/苏氨酸磷酸化事件在细胞间通讯中的作用；确定酪氨酸磷酸化事件在Src激酶调节的信号通路中的重要性；测量蛋白质泛素化途径与蛋白质质量控制之间的关系；验证乳腺癌、胰腺癌、前列腺癌、卵巢癌和肺癌的血清生物标记物；以及测量肿瘤“涂抹”试剂的血清半衰期。该中心目前的质谱仪(离子陷阱和离子陷阱/混合仪器)主要用于大型蛋白质组谱分析(如发现)研究，但不太适合需要针对特定分子的实验工作流程的应用。具体地说，这些项目需要一台能够执行1)使用前体离子扫描对特定蛋白质修饰进行定性分析的仪器，以及2)使用单/多反应监测仪对血清中大量(100到1000)多肽进行高灵敏的多重定量分析的仪器。三重四极质谱计是唯一适合满足这些要求的仪器。目前由美国国立卫生研究院资助的具有这些要求的研究每年需要在该仪器上注射超过2416次，或超过87%的利用率。如果获奖，三重四极仪器将由FHCRC蛋白质组学共享资源运营，该资源拥有操作、维护和管理仪器的专业知识，并制定政策确保整个FHCRC和财团社区以及该地区由NIH资助的其他调查人员都可以访问它。此外，FHCRC支持计算蛋白质组学共享资源，由拥有专业知识和经验的中心教师管理，以支持使用仪器产生的数据所需的计算基础设施。所要求的仪器将满足用户群体的当前和未来需求，并支持国家卫生研究院资助的FHCRC的研究。 与公共健康相关：利用质谱仪进行蛋白质分析是尖端生物医学研究中最强大和最广泛的分析工具之一，而获得蛋白质组学技术对于全面了解人类疾病的生物学基础以及发现和验证蛋白质生物标志物以更好地诊断疾病和监测治疗效果至关重要。本申请中要求的三重四极杆质谱仪将为NIH资助的弗雷德·哈钦森癌症研究中心的研究人员提供至关重要的蛋白质组学数据，用于1)通过生物标记物验证早期检测卵巢癌、肺癌、胰腺癌、前列腺癌和乳腺癌，2)开发检测癌症显像剂的灵敏分析方法，3)灵敏地检测与信号转导途径、染色质生物学、蛋白质质量控制和细胞间通信相关的蛋白质修饰。最终，这台仪器产生的数据将导致在分子水平上更好地了解癌症，并改进癌症患者的检测和结果。

DESCRIPTION (provided by applicant): This proposal requests funds to purchase a triple quadrupole mass spectrometer to support than 12 NIH-funded projects led by 9 principal investigators at the Fred Hutchinson Cancer Research Center (FHCRC) as well as Cancer Consortium members from the University of Washington and Children's Hospital. Projects that will benefit from this instrumentation span a variety of areas important for cancer research. Specifically the instrument will be used to understand the role of serine/threonine phosphorylation events in cell-cell communication; determine the importance of tyrosine phosphorylation events in Src kinase-modulated signaling pathways; measure the relationship between protein ubiquitination pathways and protein quality control; validate serum biomarkers in cancers of the breast, pancreas, prostate, ovary, and lung; and measure the serum half life of tumor "painting" reagents. Current mass spectrometry instrumentation at the Center (ion- trap and ion-trap/hybrid instruments) is used primarily for large proteomic profiling (e.g., discovery) studies, but is not well suited for applications that require experimental workflows that target specific molecules. Specifically, these projects require an instrument capable of performing 1) qualitative assays of specific protein modifications using precursor ion scanning and 2) highly-sensitive multiplexed quantitative assays for large numbers (100s to 1000s) of peptides in serum using Single/Multiple Reaction Monitoring (S/MRM). The triple quadrupole mass spectrometer is uniquely suited to meet these requirements. Current NIH-funded research with these requirements will demand over 2416 injections onto this instrument per year, or over 87% utilization. If awarded, the triple quadrupole instrument would be operated by the FHCRC Proteomics Shared Resource, where expertise exists to operate, maintain, and manage the instrument, and policies exist to ensure it is accessible to the entire FHCRC and Consortium community, as well as other NIH-funded investigators in the region. Moreover, the FHCRC supports a Computational Proteomics Shared Resource, managed by Center faculty who have expertise and experience to support the computational infrastructure needed to make use of the data generated by the instrument. The requested instrument will address both immediate and future needs of the user community and support NIH-funded research at the FHCRC. PUBLIC HEALTH RELEVANCE: Protein analysis by mass spectrometry is one of the most powerful and expanding analytical tools in cutting-edge biomedical research, and access to proteomics technology is critical to fully understand the biological basis of human disease and to discover and validate protein biomarkers to better diagnose disease and monitor treatment efficacy. The triple quadrupole mass spectrometer requested in this application will provide NIH funded researchers at the Fred Hutchinson Cancer Research Center critically important proteomics data for 1) the early detection of ovarian, lung, pancreatic, prostate and breast cancer through biomarker validation, 2) the development of sensitive assays to detect cancer imaging agents, and 3) the sensitive detection of protein modifications associated with signal transduction pathways, chromatin biology, protein quality control, and cell-cell communication. Ultimately, data produced from this instrument will lead to a better understanding of cancer at the molecular level and improved detection and outcomes for people afflicted with cancer.