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    • 1. 发明授权
    • Narrow bore porous layer open tube capillary column and uses thereof
    • 窄孔多孔层开管毛细管柱及其用途
    • US08580570B2
    • 2013-11-12
    • US13184075
    • 2011-07-15
    • Barry L. KargerJian Zhang
    • Barry L. KargerJian Zhang
    • G01N30/00G01N30/02
    • G01N30/60B01J20/28085B01J20/285B01J20/289B01J20/327B01J20/3282B01J2220/54B01J2220/84B01J2220/86G01N30/6073G01N30/7266G01N2030/528Y10T436/11Y10T436/117497
    • A polymer-based PLOT capillary column prepared by in situ copolymerization of a functional monomer, which usually contains the retentive chemistries, and a crosslinking monomer, which enhances the strength of the polymer matrix, is disclosed. Also disclosed is a system comprising the polymer-based PLOT column coupled to a mass flow or concentration sensitive detector, for carrying out a chemical analysis method on samples separated by liquid chromatography using the column, and a process for using the system. Columns of the invention can be prepared in a robust fashion with a very narrow i.d., e.g., 5-15 μm. Thus, they are suitable for commercial use in ultratrace LC/MS proteomic analysis. Columns according to the invention are characterized by high resolving power and high column-to-column reproducibility. When these columns are coupled on-line with, e.g., ESI-MS detection, the resulting systems are capable of detecting the component parts of complex proteomic samples down to the low attomole to sub-attomole level.
    • 公开了通过含有保持性化学物质的官能单体的原位共聚制备的聚合物基PLOT毛细管柱和增强聚合物基质的强度的交联单体。 还公开了一种系统,其包含与质量流量或浓度敏感检测器相连的基于聚合物的PLOT柱,用于对通过使用该柱的液相色谱分离的样品进行化学分析方法,以及使用该系统的方法。 可以以非常窄的i.d.例如5-15mum的稳健方式制备本发明的色谱柱。 因此,它们适用于超临界LC / MS蛋白质组学分析中的商业用途。 根据本发明的色谱柱的特征在于高分辨能力和高柱色谱重现性。 当这些柱在线与例如ESI-MS检测偶联时,所得到的系统能够检测复合蛋白质组样品的组分部分,直至低阿托莫尔至亚阿托莫尔水平。
    • 2. 发明申请
    • NARROW BORE POROUS LAYER OPEN TUBE CAPILLARY COLUMN AND USES THEREOF
    • NARROW BORE POROUS LAYER OPEN TUBE CAPILLARY COLUMN及其用途
    • US20110290009A1
    • 2011-12-01
    • US13184075
    • 2011-07-15
    • Barry L. KargerJian Zhang
    • Barry L. KargerJian Zhang
    • G01N30/02G01N30/72B01D15/22
    • G01N30/60B01J20/28085B01J20/285B01J20/289B01J20/327B01J20/3282B01J2220/54B01J2220/84B01J2220/86G01N30/6073G01N30/7266G01N2030/528Y10T436/11Y10T436/117497
    • A polymer-based PLOT capillary column prepared by in situ copolymerization of a functional monomer, which usually contains the retentive chemistries, and a crosslinking monomer, which enhances the strength of the polymer matrix, is disclosed. Also disclosed is a system comprising the polymer-based PLOT column coupled to a mass flow or concentration sensitive detector, for carrying out a chemical analysis method on samples separated by liquid chromatography using the column, and a process for using the system. Columns of the invention can be prepared in a robust fashion with a very narrow i.d., e.g., 5-15 μm. Thus, they are suitable for commercial use in ultratrace LC/MS proteomic analysis. Columns according to the invention are characterized by high resolving power and high column-to-column reproducibility. When these columns are coupled on-line with, e.g., ESI-MS detection, the resulting systems are capable of detecting the component parts of complex proteomic samples down to the low attomole to sub-attomole level.
    • 公开了通过含有保持性化学物质的官能单体的原位共聚制备的聚合物基PLOT毛细管柱和增强聚合物基质的强度的交联单体。 还公开了一种系统,其包含与质量流量或浓度敏感检测器相连的基于聚合物的PLOT柱,用于对通过使用该柱的液相色谱分离的样品进行化学分析方法,以及使用该系统的方法。 可以以非常窄的i.d.例如5-15μm的稳健方式制备本发明的色谱柱。 因此,它们适用于超临界LC / MS蛋白质组学分析中的商业用途。 根据本发明的色谱柱的特征在于高分辨能力和高柱色谱重现性。 当这些柱在线与例如ESI-MS检测偶联时,所得到的系统能够检测复合蛋白质组样品的组分部分,直至低阿托莫尔至亚阿托莫尔水平。
    • 3. 发明申请
    • NARROW BORE LAYER OPEN TUBE CAPILLARY COLUMN AND USES THEREOF
    • NARROW BORE LAYER OPEN TUBE CAPILLARY COLUMN及其用途
    • US20090203146A1
    • 2009-08-13
    • US12306232
    • 2007-06-20
    • Barry L. KargerJian Zhang
    • Barry L. KargerJian Zhang
    • G01N27/26B05D5/00G01N35/00G01N27/06
    • G01N30/60B01J20/28085B01J20/285B01J20/289B01J20/327B01J20/3282B01J2220/54B01J2220/84B01J2220/86G01N30/6073G01N30/7266G01N2030/528Y10T436/11Y10T436/117497
    • A polymer-based PLOT column prepared by in situ copolymerization of a functional monomer, which usually contains the retentive chemistries, and a crosslinking monomer, which enhances the strength of the polymer matrix, is disclosed. Styrenic based monomers such as styrene and divinylbenzene or meth/acrylic based monomers such as butyl or stearyl methacrylate and ethylene glycol dimethacrylate, are preferred. Columns of the invention can be prepared in a robust fashion with a very narrow i.d., e.g., 5-15 μm. Thus, they are suitable for commercial use in ultratrace LC/MS proteomic analysis. Columns according to the invention are characterized by high resolving power, high column-to-column reproducibility and relatively high loading capacity. When these columns are coupled on-line with, e.g., ESI-MS detection, the resulting systems provide high sensitivity for analysis of complex proteomic samples, even down to the low attomole to sub-attomole level.
    • 公开了通过包含保持性化学物质的官能单体的原位共聚制备的聚合物基PLOT柱和提高聚合物基质的强度的交联单体。 苯乙烯类单体如苯乙烯和二乙烯基苯或甲基丙烯酸类单体如甲基丙烯酸丁酯或硬脂基酯和乙二醇二甲基丙烯酸酯是优选的。 可以以非常窄的i.d.例如5-15mum的稳健方式制备本发明的色谱柱。 因此,它们适用于超临界LC / MS蛋白质组学分析中的商业用途。 根据本发明的色谱柱的特征在于高分辨能力,高柱色谱重现性和相对较高的负载能力。 当这些色谱柱与ESI-MS检测在线偶联时,所得到的系统为复杂蛋白质组样品的分析提供了高灵敏度,甚至低至低阿托莫尔至亚阿托莫尔水平。
    • 7. 发明授权
    • Screening natural samples for new therapeutic compounds using capillary
electrophoresis
    • 使用毛细管电泳筛选新的治疗化合物的天然样品
    • US5783397A
    • 1998-07-21
    • US662085
    • 1996-06-12
    • Dallas E. HughesBarry L. Karger
    • Dallas E. HughesBarry L. Karger
    • G01N27/447A61K36/00G01N33/537G01N33/561G01N33/68G01N33/53C25D13/00G01N21/00G01N33/00
    • G01N33/561G01N33/537G01N33/6803G01N2500/00
    • A method in which natural sample components are simultaneously fractionated and screened for compounds that bind tightly to specific molecules of interest is disclosed. Such newly isolated ligands are good candidates for potential therapeutic or diagnostic compounds. The natural sample is first combined with a potential target molecule and then subjected to capillary electrophoresis (CE). Charged (or even neutral) compounds present in the natural sample that bind to the added target molecule can alter its normal migration time upon CE, by changing its charge-to-mass ratio, or will cause a variation in peak shape or area. Complex formation can be detected by simply monitoring the migration of the target molecule during electrophoresis. Any new ligands that bind to the target molecule will be good candidates for therapeutic or diagnostic compounds. Interfering, weak-binding ligands commonly present in crude extracts are not detected. Small, neutral ligands, as well as charged ligands, can be identified in competitive binding experiments with known, charged competitor molecules.
    • 公开了一种方法,其中天然样品组分被同时分级并筛选与特定目的分子紧密结合的化合物。 这些新分离的配体是潜在的治疗或诊断化合物的良好候选物。 首先将天然样品与潜在的靶分子组合,然后进行毛细管电泳(CE)。 存在于与添加的靶分子结合的天然样品中的带电(或甚至中性)化合物可以通过改变其电荷质量比来改变其在CE上的正常迁移时间,或者将导致峰形或面积的变化。 络合物形成可以通过简单地监测靶分子在电泳过程中的迁移来检测。 与靶分子结合的任何新配体将是治疗或诊断化合物的良好候选物。 通常存在于粗提取物中的干扰,弱结合配体未被检测到。 可以在具有已知的带电竞争分子的竞争性结合实验中鉴定小的中性配体以及带电荷的配体。
    • 8. 发明授权
    • High performance microcapillary gel electrophoresis
    • 高性能微毛细管凝胶电泳
    • US4865706A
    • 1989-09-12
    • US921311
    • 1986-10-21
    • Barry L. KargerAharon Cohen
    • Barry L. KargerAharon Cohen
    • G01N27/447
    • G01N27/44721G01N27/44704G01N27/44747Y10T29/49885
    • A microcapillary column for high performance electrophoresis includes a fused silica microcapillary, a gel of crosslinked polyacrylamide polymerized in the tube, and a thin layer of connecting material covalently bonded to the inner surface of the microcapillary wall and to the polymeric gel. The gel-containing microcapillary is prepared by first covalently bonding a suitable bifunctional reagent to the inner surface of the microcapillary wall, and then causing a mixture of monomer, crosslinking agent, and polymerization catalyst to react in the bore of the microcapillary to form a polymeric matrix which is covalently bonded to the microcapillary wall via the bifunctional reagent. In electrophoresis, the gel-containing microcapillary provides peak efficiencies in excess of 100,000 theoretical plates within separation times of less than thirty minutes, and permits trace level determinations of molecular weights.
    • 用于高性能电泳的微毛细管柱包括熔融二氧化硅微毛细管,在管中聚合的交联聚丙烯酰胺的凝胶和共价键合到微毛细管壁的内表面和聚合物凝胶的薄层连接材料。 通过首先将合适的双功能试剂共价结合到微毛细管壁的内表面,然后使单体,交联剂和聚合催化剂的混合物在微毛细孔的孔中反应以形成聚合物,制备含凝胶的微毛细管 通过双功能试剂共价结合到微毛细管壁上的基质。 在电泳过程中,含凝胶微毛细管提供超过100,000理论塔板的峰值效率,分离时间少于30分钟,并允许痕量水平测定分子量。