Development and validation of nanoparticle-mediated microfluidic profiling approach for rare cell analysis

用于稀有细胞分析的纳米颗粒介导的微流体分析方法的开发和验证

• 批准号: 9232705
• 负责人: Shana O Kelley
• 金额: $ 25.9万
• 依托单位: UNIVERSITY OF TORONTO
• 依托单位国家: 美国
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-03-15 至 2020-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9232705
• 关键词: Alpha Cell; Antibodies; Automation; Benign; Biochemical; Biological Assay; Biological Models; Blood Circulation; Blood Volume; Blood specimen; Breast Cancer Patient; Cancer Center; Cancer Diagnostics; Cancer Patient; Cell Adhesion Molecules; Cell Count; Cell Fraction; Cell Separation; Cells; Clinical; Clinical Research; Collaborations; Companions; Detection; Development; Device or Instrument Development; Devices; Diagnosis; Diagnostic; Diagnostic Procedure; Disease; Disease Progression; Engineering; Epithelial; Epithelial Cells; Exhibits; Genetic; Goals; Health Sciences; Heterogeneity; Hospitals; Individual; Leukocytes; London; Magnetic nanoparticles; Malignant neoplasm of prostate; Mediating; Membrane Proteins; Mesenchymal; Methods; Microfluidic Microchips; Microfluidics; Molecular; Molecular Analysis; Molecular Genetics; Molecular Profiling; Monitor; Neoplasm Circulating Cells; Neoplasm Metastasis; Patients; Performance; Phenotype; Population; Primary Neoplasm; Process; Production; Proteins; Reporting; Research; Research Personnel; Sampling; Sensitivity and Specificity; Specificity; Staging; Structure; Surface; System; Technology; Testing; Time; Universities; Validation; Whole Blood; Work; assay development; base; cancer cell; cancer subtypes; circulating cancer cell; clinical decision-making; commercialization; effective therapy; epithelial to mesenchymal transition; genetic analysis; genetic information; magnetic field; malignant breast neoplasm; manufacturing scale-up; medical specialties; multidisciplinary; nanoparticle; new technology; novel diagnostics; prototype; research clinical testing; response; tool; tumor; tumor progression; user-friendly

Project Summary: Circulating tumour cells (CTC) are shed into the vasculature from primary tumours, and have been shown to contribute to the formation of metastatic lesions in model systems. Monitoring these circulating cells therefore presents, in principle, a means to monitor a tumour's metastatic potential in real time. Similar to the heterogeneity of cellular subpopulations within an individual tumour, CTCs within an individual also exhibit heterogeneity, containing subpopulations having varying relevance to the development of metastatic disease. Recent studies show that specific subpopulations of CTCs possess metastatic potential, while other subpopulations of circulating epithelial cells may be relatively benign. Similarly, the levels of surface proteins on CTCs are heterogeneous and dynamic: they are observed to change as a function of disease stage and response to therapy. In particular, the epithelial-mesenchymal transition (EMT) appears to be a dynamic process in CTCs, and the markers that correspond to these two states vary and contribute to the phenotypic heterogeneity of CTCs. Using a microfluidic device, the velocity valley (VV) chip, that was developed in our group, we now have the ability to profile a CTC population from blood samples and by sorting these cells based on expression of surface markers. This novel technology has enabled us to capture and study CTCs within various ranges of EMT. In this proposal, our goal is to fully develop the VV chip technology into a fully integrated device for CTC population profiling, CTC detection, and molecular analysis. This will be accomplished through integration of companion technologies allowing for sensitive on-chip electrochemical detection and genetic analysis of CTCs. Manufacturing methods for the device will be investigated for production at high-scale. In addition, automation for sample analysis and detection will be developed enabling the full realization of the device in a clinical or research setting. Finally the device will be validated with clinical samples from prostate and breast cancer patients. This project will include the collaboration of a multidisciplinary team of six researchers and clinicians for device development, manufacturing, and clinical testing. As a team, the researchers will work to develop and validate this diagnostic platform. At the completion of this project a clinical research tool will be produced capable of profiling a patient's CTC population and providing molecular and genetic information on the EMT for that population in a single automated device with capture, profiling, and detection capabilities.

项目概要： 循环肿瘤细胞（CTC）从原发性肿瘤脱落到脉管系统中，并已被证明可以 有助于模型系统中转移性病变的形成。因此监测这些循环细胞 原则上，提出了一种实时监测肿瘤转移潜力的方法。类似于 个体肿瘤内细胞亚群的异质性，个体内的 CTC 也表现出 异质性，包含与转移性疾病的发展具有不同相关性的亚群。 最近的研究表明，CTC 的特定亚群具有转移潜力，而其他亚群则具有转移潜力。 循环上皮细胞亚群可能相对良性。 同样，CTC 上的表面蛋白水平是异质且动态的：观察到它们 随着疾病阶段和治疗反应的变化而变化。特别是上皮间质 转变（EMT）似乎是 CTC 中的一个动态过程，并且与这两个相对应的标记 状态各不相同并导致 CTC 的表型异质性。使用微流体装置，速度 Valley (VV) 芯片是我们团队开发的，我们现在能够分析 CTC 群体 血液样本并根据表面标记的表达对这些细胞进行分类。这项新颖的技术具有 使我们能够捕获和研究不同 EMT 范围内的 CTC。 在这个提案中，我们的目标是将VV芯片技术全面发展成为CTC的全集成设备 群体分析、CTC 检测和分子分析。这将通过整合来实现 配套技术可实现灵敏的片上电化学检测和 CTC 遗传分析。 将研究该设备的制造方法以进行大规模生产。此外， 将开发样品分析和检测的自动化，从而能够在 临床或研究环境。最后，该设备将通过前列腺和乳房的临床样本进行验证 癌症患者。 该项目将包括由六名研究人员和临床医生组成的多学科团队的合作，以开发设备 开发、制造和临床测试。作为一个团队，研究人员将致力于开发和验证 这个诊断平台。该项目完成后，将生产出一种临床研究工具，能够 分析患者的 CTC 群体并为此提供有关 EMT 的分子和遗传信息 具有捕获、分析和检测功能的单个自动化设备中的群体。