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    • 5. 发明申请
    • REAL-TIME, SINGLE-STEP BIOASSAY USING NANOPLASMONIC RESONATOR WITH ULTRA-HIGH SENSITIVITY
    • 使用具有超高灵敏度的纳米平衡共振器的实时,单步生物
    • WO2009094058A2
    • 2009-07-30
    • PCT/US2008/082266
    • 2008-11-03
    • THE REGENTS OF THE UNIVERSITY OF CALIFORNIACHEN, Fanqing, FrankELLMAN, Jonathan, A.ZHANG, Xiang
    • CHEN, Fanqing, FrankELLMAN, Jonathan, A.ZHANG, Xiang
    • G01N21/65
    • G01N21/658B82Y15/00B82Y20/00C12Q1/37
    • Enzymatic activity measurement has broad application in drug screening, diagnosis and disease staging, and molecular profiling. However, conventional immunopeptidemetric assays (IMPA) exhibit low fluorescence signal-to-noise ratios, preventing reliable measurements at lower concentrations in the clinically important pM~nM range. Here, we demonstrated a highly sensitive measurement of protease activity using nanoplasmonic resonator (NPR). NPRs enhance Raman signals by 6.1x10 10 times in a highly reproducible manner, enabling fast detection of protease and enzyme activity, such as Prostate Specific Antigen (paPSA), in real-time, at sensitivity level at 6 pM (0.2 ng/ml) with a dynamic range of 3 orders of magnitude. Experiments on extracellular fluid (ECF) from paPSA-positive cells demonstrate specific detection in a complex bio-fluid background. This method offers a fast, sensitive, accurate, and one-step approach to detect the proteases activities in very small sample volumes.
    • 酶活性测定在药物筛选,诊断和疾病分期以及分子谱分析中具有广泛的应用。 然而,传统的免疫肽测定(IMPA)表现出低的荧光信噪比,防止在临床上重要的pM〜nM范围内在较低浓度下的可靠测量。 在这里,我们使用纳米弹性共振器(NPR)展示了对蛋白酶活性的高度灵敏度测量。 NPR以高度可重复的方式增强了6.1x1010倍的拉曼信号,实时快速检测蛋白酶和酶活性,如前列腺特异抗原(paPSA),灵敏度水平为6 pM(0.2 ng / ml),具有 动态范围3个数量级。 来自paPSA阳性细胞的细胞外液(ECF)的实验在复杂的生物流体背景中表现出特异性检测。 该方法提供了一种快速,灵敏,准确和一步法在非常小的样品体积中检测蛋白酶活性。
    • 9. 发明公开
    • REAL-TIME, SINGLE-STEP BIOASSAY USING NANOPLASMONIC RESONATOR WITH ULTRA-HIGH SENSITIVITY
    • 单级REAL-TIME使用生物测定具有超高灵敏度NANOPLASMONISCHEM谐振器
    • EP2210072A2
    • 2010-07-28
    • EP08871173.4
    • 2008-11-03
    • The Regents of the University of California
    • CHEN, Fanqing, FrankELLMAN, Jonathan, A.ZHANG, Xiang
    • G01J3/44
    • G01N21/658B82Y15/00B82Y20/00C12Q1/37
    • Enzymatic activity measurement has broad application in drug screening, diagnosis and disease staging, and molecular profiling. However, conventional immunopeptidemetric assays (IMPA) exhibit low fluorescence signal-to-noise ratios, preventing reliable measurements at lower concentrations in the clinically important pM~nM range. Here, we demonstrated a highly sensitive measurement of protease activity using nanoplasmonic resonator (NPR). NPRs enhance Raman signals by 6.1x10
      10 times in a highly reproducible manner, enabling fast detection of protease and enzyme activity, such as Prostate Specific Antigen (paPSA), in real-time, at sensitivity level at 6 pM (0.2 ng/ml) with a dynamic range of 3 orders of magnitude. Experiments on extracellular fluid (ECF) from paPSA-positive cells demonstrate specific detection in a complex bio-fluid background. This method offers a fast, sensitive, accurate, and one-step approach to detect the proteases activities in very small sample volumes.
    • 甲纳米等离子体激元共振器(NPR),其包括具有交替屏蔽层(一个或多个)金属纳米盘,具有结合或束缚到所述纳米等离子体激元共振器的表面,用于酶活性的高灵敏度的测定一个标记的生物分子。 NPR增强在高度可再现的方式的拉曼信号,使几乎检测蛋白酶和酶的活性,:如前列腺特异性抗原(paPSA)在实时的,在皮摩尔灵敏度水平。 对细胞外流体从paPSA阳性细胞(ECF)的实验证明在非常小的样品体积中的实时单步检测的复合物的生物流体背景特异性检测。