Self-Calibrating Biosensor Array for Rapid Point-of-care Diagnosis

用于快速护理点诊断的自校准生物传感器阵列

• 批准号: 7108429
• 负责人: Judith L. Erb
• 金额: $ 20.57万
• 依托单位: IA, INC.
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-15 至 2008-05-14
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7108429
• 关键词: antibody; blood; conditioning; cytokine; diagnosis; early diagnosis; fluorescence; heart failure; measurement; septicemia; serum; success

DESCRIPTION (provided by applicant): While routine point-of-care blood chemistry measurements can now be performed in clinical settings, quantitative high-sensitivity immunoassay measurements cannot. Thus, low-level serum markers for a variety of life-threatening conditions, such as sepsis, cannot be performed at the point of care. IA Inc.'s immunosensors possess the requisite speed and sensitivity needed to bring immunoassay to the point-of- care (POC), but lack the internal calibration and multiplexing features needed for measuring a panel of markers with the inter-sensor reproducibility required for clinical assays. The goal of this project is to extend IA, Inc's biosensor technology from the research environment into clinical settings by developing a self-calibrating, multi-analyte biosensor system which rapidly and accurately measures panels of low concentration disease markers in serum. The technology platform will be adaptable for rapid measurement of any blood analyte that currently requires more time-consuming immunoassay procedures. This project will focus on developing the two features that must be added to the existing technology platform in order to provide a point-of-care panel: self-calibration of sensors and multi-analyte capability. Phase II will provide a panel of inflammatory markers, such as cytokines, which are useful for diagnosis of life-threatening conditions such as sepsis and heart failure. By improving the speed with which clinical staff can make diagnosis, earlier treatment will reduce patient morbidity and mortality as well as the high cost incurred by more advanced disease progression. The Phase I Specific Aims include: 1) Develop inter-sensor calibration methods for data normalization; 2) Develop an instrument to measure 4-6 fluorescent emissions; 3) Perform calibrated simultaneous assay of 2 analytes; 4) Evaluate a universal sensor surface for use in antibody-based assays. The use of quantum dots for achieving calibration and multiplexing will be explored.

描述（由申请人提供）：虽然常规的即时血液化学测量现在可以在临床环境中进行，但定量的高灵敏度免疫分析测量不能。因此，不能在护理点进行各种危及生命的疾病（如败血症）的低水平血清标志物检测。IA公司的免疫传感器具有将免疫测定带到护理点（POC）所需的速度和灵敏度，但缺乏测量一组标记所需的内部校准和多路复用功能，并且缺乏临床测定所需的传感器间可重复性。该项目的目标是通过开发一种自校准的多分析物生物传感器系统，将IA公司的生物传感器技术从研究环境扩展到临床环境，该系统可以快速准确地测量血清中低浓度疾病标志物。该技术平台将适用于目前需要更耗时的免疫分析程序的任何血液分析物的快速测量。该项目将专注于开发必须添加到现有技术平台的两个功能，以提供一个即时护理面板：传感器的自校准和多分析物能力。第二阶段将提供一组炎症标志物，如细胞因子，这对诊断脓毒症和心力衰竭等危及生命的疾病很有用。通过提高临床工作人员的诊断速度，早期治疗将降低患者的发病率和死亡率，以及疾病进展更晚期所带来的高昂费用。第一阶段的具体目标包括：1)开发数据归一化的传感器间校准方法；2)研制测量4-6次荧光发射的仪器；3)对2种分析物同时进行校准分析；4)评估用于基于抗体的检测的通用传感器表面。将探讨使用量子点来实现校准和多路复用。