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    • 7. 发明申请
    • Polymeric Nanopillars and Nanotubes, Their Manufacture and Uses
    • 聚合物纳米管和纳米管,其制造和用途
    • US20100108519A1
    • 2010-05-06
    • US12440546
    • 2007-09-12
    • Steven A. SoperRobin L. McCarleyGuofang ChenHamed Shadpour
    • Steven A. SoperRobin L. McCarleyGuofang ChenHamed Shadpour
    • G01N27/26B82B3/00B32B5/16
    • B81C1/00111B81C2201/034G01N27/44773Y10T428/2982
    • A method is disclosed for fabricating free-standing polymeric nanopillars or nanotubes with remarkably high aspect ratios. The nanopillars and nanotubes may be used, for example, in integrated microfluidic systems for rapid, automated, high-capacity analysis or separation of complex protein mixtures or their enzyme digest products. One embodiment, preferably fabricated entirely from polymer substrates, comprises a cell lysis unit; a solid-phase extraction unit with free-standing, polymeric nanostructures; a multi-dimensional electrophoretic separation unit with high peak capacity; a solid-phase nanoreactor for the proteolytic digestion of isolated proteins; and a chromatographic unit for the separation of peptide fragments from the digestion of proteins. The nanopillars and nanotubes may also be used to increase surface area for reaction with a solid phase, for example, with immobilized enzymes or other catalysts within a microchannel, or as a solid support for capillary electrochromatography-based separations of proteins or peptides.
    • 公开了用于制造具有非常高的纵横比的独立聚合物纳米柱或纳米管的方法。 纳米管和纳米管可用于例如用于快速,自动化,高容量分析或分离复杂蛋白质混合物或其酶消化产物的集成微流体系统。 一个实施方案,优选完全由聚合物底物制造,包括细胞裂解单元; 具有独立的聚合物纳米结构的固相萃取装置; 具有高峰值容量的多维电泳分离单元; 用于分离蛋白质的蛋白水解消化的固相纳米反应器; 以及用于从蛋白质消化中分离肽片段的色谱单元。 纳米柱和纳米管也可用于增加与固相反应的表面积,例如固定化酶或微通道内的其它催化剂,或作为固体支持物,用于基于毛细管电色谱法的蛋白质或肽分离。
    • 10. 发明授权
    • Microsystem for rapid DNA sequencing
    • 用于快速DNA测序的微系统
    • US5846727A
    • 1998-12-08
    • US865275
    • 1997-05-29
    • Steven A. SoperJack D. DaviesYuli Vladimirsky
    • Steven A. SoperJack D. DaviesYuli Vladimirsky
    • B01J19/00C07H21/00C12Q1/68C12M1/00C12M3/04C12N15/00
    • B01L7/52B01J19/0093C07H21/00C12Q1/6869B01L2200/10B01L2300/0819B01L2400/0421B01L3/502753
    • A system is disclosed for the rapid and cost-effective sequencing of DNA. There are three principal components of the system: (1) a microreactor, which prepares DNA sequencing "ladders" using solid-phase techniques, preferably in capillary tubes whose volumes are on the order of 10-1000 nanoliters, preferably 10-200 nanoliters; (2) a microfabricated electrophoresis capillary separation unit; and (3) a fluorescence detector with single-mode optical fibers interfaced directly to the electrophoresis capillary. The system is suitable for a highly multiplexed, automated DNA sequencing device Typical. steps in sequencing are as follows: (1) PCR amplification of a DNA template in microtiter dishes using labelled primers, e.g., primers labelled with biotin; (2) immobilizing the labelled PCR products on the walls of one or more capillary tubes having volumes on the order of 10-200 nanoliters; (3) preparing nanoliter quantities of labelled Sanger extension products of the amplified DNA; (4) purifying the oligonucleotide sequencing ladders; (5) high speed electrophoretic separation of the sequencing ladders; and (6) near-infrared, laser-induced fluorescence detection of the oligonucleotides. Base-calling is preferably performed in a single lane format with a single fluorophore, in which the bases are distinguished by different fluorescence lifetimes of dyes that otherwise have similar absorption and fluorescence emission spectra at the wavelengths used. Typical read lengths are on the order of 400-500 bases. Fluorescence is performed on-chip with one single-mode optical fiber carrying the excitation light to the capillary channel, and a second single-mode optical fiber collecting the fluorescent photons. Only sub-microliter volumes of expensive sequencing reagents and dye-labeled ddNTPs are required in this system.
    • 公开了用于DNA的快速和成本有效的测序的系统。 该系统有三个主要组成部分:(1)微反应器,其使用固相技术制备DNA测序“梯子”,优选在其体积在10-1000纳升级,优选10-200纳升级的毛细管中; (2)微细电泳毛细管分离单元; 和(3)具有直接连接到电泳毛细管的单模光纤的荧光检测器。 该系统适用于高度多路复用的自动DNA测序装置。 测序步骤如下:(1)使用标记的引物,例如用生物素标记的引物,在微量滴定板中PCR扩增DNA模板; (2)将标记的PCR产物固定在体积为10-200纳升的一个或多个毛细管的壁上; (3)制备经扩增的DNA的纳升量的标记的Sanger延伸产物; (4)纯化寡核苷酸测序梯; (5)测序梯的高速电泳分离; 和(6)寡核苷酸的近红外激光诱导荧光检测。 碱基调用优选以单一道路格式与单个荧光团进行,其中碱基通过在所用波长处具有相似吸收和荧光发射光谱的染料的不同荧光寿命来区分。 典型读取长度约为400-500个碱基。 使用向毛细管通道携带激发光的一个单模光纤进行片上荧光,以及收集荧光光子的第二单模光纤。 在该系统中仅需要亚微升体积的昂贵的测序试剂和染料标记的ddNTP。