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公开(公告)号:US20110097763A1
公开(公告)日:2011-04-28
申请号:US12991966
申请日:2009-05-13
申请人: Michael G. Pollack , Zhishan Hua , Allen E. Eckhardt , Prasanna Thwar , Vijay Srinivasan , Vamsee K. Pamula
发明人: Michael G. Pollack , Zhishan Hua , Allen E. Eckhardt , Prasanna Thwar , Vijay Srinivasan , Vamsee K. Pamula
IPC分类号: C12P19/34
CPC分类号: B01L7/525 , B01L3/502761 , B01L3/502792 , B01L7/52 , B01L2200/027 , B01L2200/0668 , B01L2200/10 , B01L2300/0803 , B01L2300/0816 , B01L2300/0861 , B01L2300/0864 , B01L2300/0867 , B01L2300/088 , B01L2300/0883 , B01L2300/089 , B01L2300/1827 , B01L2400/0427 , B01L2400/043 , C12Q1/686 , C12Q2565/629
摘要: The invention relates to certain novel approaches to reducing or eliminating the movement of contaminants from one droplet to another on a droplet actuator via liquid filler fluid. In one application, droplet actuators are used to conduct genetic analysis using polymerase chain reaction (PCR) techniques. The invention addresses the need for improved methods of performing PCR on a droplet actuator that provide for optimum amplification and detection of a sample target.
摘要翻译: 本发明涉及在液滴致动器上通过液体填充液减少或消除污染物从一个液滴到另一个液滴的移动的某些新颖方法。 在一个应用中,液滴致动器用于使用聚合酶链反应(PCR)技术进行遗传分析。 本发明解决了对提供样品靶的最佳放大和检测的在液滴致动器上进行PCR的改进方法的需要。
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12.
公开(公告)号:US20100258441A1
公开(公告)日:2010-10-14
申请号:US12761147
申请日:2010-04-15
CPC分类号: B01F11/0071 , B01F13/0071 , B01F13/0076 , B01L3/502746 , B01L3/502761 , B01L3/502792 , B01L7/52 , B01L7/525 , B01L2200/027 , B01L2300/0654 , B01L2300/0816 , B01L2300/0861 , B01L2300/0864 , B01L2300/0867 , B01L2300/089 , B01L2300/1827 , B01L2400/0406 , B01L2400/0415 , B01L2400/0421 , B01L2400/0424 , B01L2400/0427 , B01L2400/043 , B01L2400/0436 , B01L2400/0442 , G01N35/0098 , G01N2035/1046 , Y10T436/11 , Y10T436/25 , Y10T436/25625 , Y10T436/2575
摘要: The invention provides a method of circulating magnetically responsive beads within a droplet in a droplet actuator. The invention also provides methods for splitting droplets. The invention, in one embodiment, makes use of a droplet actuator with top and bottom substrates, a plurality of magnetic fields respectively present proximate the top and bottom substrates, wherein at least one of the magnet fields is selectively alterable, and a plurality of droplet operations electrodes positioned along at least one of the top and bottom surfaces. A droplet is positioned between the top and bottom surfaces and at least one of the magnetic fields is selectively altered.
摘要翻译: 本发明提供了一种在液滴致动器中的液滴内循环磁响应珠的方法。 本发明还提供了分裂液滴的方法。 在一个实施例中,本发明利用具有顶部和底部基底的液滴致动器,分别存在于顶部和底部基底附近的多个磁场,其中至少一个磁场可选择性地改变,并且多个液滴 沿着顶表面和底表面中的至少一个定位的操作电极。 液滴位于顶表面和底表面之间,并且至少一个磁场被选择性地改变。
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公开(公告)号:US20100236928A1
公开(公告)日:2010-09-23
申请号:US12681848
申请日:2008-10-15
CPC分类号: B01L3/502792 , B01L3/502761 , B01L2200/0673 , B01L2300/0654 , B01L2300/0816 , B01L2300/0819 , B01L2300/0861 , B01L2300/0864 , B01L2300/0867 , B01L2300/087 , B01L2300/088 , B01L2300/089 , B01L2400/0424 , B01L2400/0427 , B01L2400/0448
摘要: A droplet actualor having electrodes configured for ejecting droplet operations transporting droplets on a surface, and a sensor arranged in proximity to one or more of the electrodes establishing a detection window on the surface for detection of one or more properties of one or more droplets on the surface, wherein the electrodes establish at least two pathways for transport of droplets into the detection window. Also provided is, A method of detecting a property of a target droplet, including using droplet operations to modulate signals from a droplet set comprising the target droplet, detecting the modulated signals of the droplet set, demodulating the modulated signals to identify the signal produced by one or more individual droplets of the set Related methods and alternative embodiments are also provided.
摘要翻译: 具有配置用于喷射在表面上输送液滴的液滴操作的电极的液滴实体,以及布置在一个或多个电极附近的传感器,其在表面上建立检测窗口,用于检测表面上的一个或多个液滴的一个或多个特性 表面,其中电极建立用于将液滴输送到检测窗中的至少两个路径。 还提供了一种检测目标液滴的属性的方法,包括使用液滴操作来调制来自包括目标液滴的液滴组的信号,检测液滴组的调制信号,解调调制信号以识别由 还提供了一组或多个组合的相关方法和替代实施例。
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公开(公告)号:US20110104816A1
公开(公告)日:2011-05-05
申请号:US12990815
申请日:2009-05-04
申请人: Michael G. Pollack , Prasanna Thwar , Vamsee K. Pamula , Vijay Srinivasan , Allen Eckhardt , Alexander Shenderov , Dwayne Allen
发明人: Michael G. Pollack , Prasanna Thwar , Vamsee K. Pamula , Vijay Srinivasan , Allen Eckhardt , Alexander Shenderov , Dwayne Allen
IPC分类号: G01N1/00
CPC分类号: B01L3/502784 , B01L3/502715 , B01L3/502761 , B01L7/52 , B01L2200/027 , B01L2200/0673 , B01L2300/022 , B01L2300/023 , B01L2300/024 , B01L2300/0672 , B01L2300/0816 , B01L2300/0864 , B01L2300/0867 , B01L2400/0415 , B01L2400/0424 , B01L2400/0427 , B01L2400/043 , B01L2400/0478 , B01L2400/0481 , B01L2400/0487 , B01L2400/049 , B01L2400/0683 , G01N27/44704 , G01N35/0098 , G01N2035/1046 , Y10T436/25 , Y10T436/2575
摘要: The invention provides droplet actuators and droplet actuator cassettes including reagent storage capabilities, as well as methods of making and using the droplet actuators and cassettes. The invention also provides continuous flow channel elements and techniques for using electrodes to manipulate droplets in flowing streams. The invention also discloses methods of separating compounds on a droplet actuator. Various other aspects of the invention are also disclosed.
摘要翻译: 本发明提供了包括试剂储存能力的液滴致动器和液滴致动器盒,以及制造和使用液滴致动器和盒的方法。 本发明还提供了用于使用电极在流动流中操纵液滴的连续流动通道元件和技术。 本发明还公开了在液滴致动器上分离化合物的方法。 还公开了本发明的各种其它方面。
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公开(公告)号:US20100221713A1
公开(公告)日:2010-09-02
申请号:US12546115
申请日:2009-08-24
申请人: Michael G. Pollack , Zhishan Hua , Allen E. Eckhardt , Prasanna Thwar , Vijay Srinivasan , Vamsee K. Pamula
发明人: Michael G. Pollack , Zhishan Hua , Allen E. Eckhardt , Prasanna Thwar , Vijay Srinivasan , Vamsee K. Pamula
IPC分类号: C12Q1/68
CPC分类号: B01L3/502792 , B01L3/502753 , B01L3/502761 , B01L7/525 , B01L2200/10 , B01L2300/0816 , B01L2300/089 , B01L2400/0427 , B01L2400/043 , C12Q1/6848 , C12Q2565/629
摘要: The invention relates to certain novel approaches to reducing or eliminating the movement of contaminants from one droplet to another on a droplet actuator via liquid filler fluid. In one application, droplet actuators are used to conduct genetic analysis using polymerase chain reaction (PCR) techniques. The invention addresses the need for improved methods of performing PCR on a droplet actuator that provide for optimum amplification and detection of a sample target.
摘要翻译: 本发明涉及在液滴致动器上通过液体填充液减少或消除污染物从一个液滴到另一个液滴的移动的某些新颖方法。 在一个应用中,液滴致动器用于使用聚合酶链反应(PCR)技术进行遗传分析。 本发明解决了对提供样品靶的最佳放大和检测的在液滴致动器上进行PCR的改进方法的需要。
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16.
公开(公告)号:US20090263834A1
公开(公告)日:2009-10-22
申请号:US12393534
申请日:2009-02-26
IPC分类号: G01N33/542
CPC分类号: G01N33/54333
摘要: Droplet actuator devices and methods for immunoassays and washing are provided. According to one embodiment, a method of providing a droplet in contact with a surface of a super paramagnetic bead with a reduced concentration of a substance is provided and includes: (a) providing a super paramagnetic bead in contact with a droplet comprising a starting concentration and starting quantity of the substance and having a starting volume; (b) conducting one or more droplet operations to merge a wash droplet with the droplet provided in step (a) to yield a combined droplet; and (c) conducting one or more droplet operations to divide the combined droplet to yield a set of droplets. The set of droplets includes: (i) a droplet in contact with the super paramagnetic bead having a decreased concentration of the substance relative to the starting concentration; and (ii) a droplet which is separated from the super paramagnetic bead.
摘要翻译: 提供液滴致动器装置和免疫测定和洗涤方法。 根据一个实施方案,提供了一种提供与物质浓度降低的超顺磁珠的表面接触的液滴的方法,包括:(a)提供与包含起始浓度的液滴接触的超顺磁珠 并开始物质的起始体积; (b)进行一个或多个液滴操作以将洗涤液滴与步骤(a)中提供的液滴合并以产生组合液滴; 和(c)进行一个或多个液滴操作以分开组合液滴以产生一组液滴。 一组液滴包括:(i)与超顺磁珠接触的液滴,其物质相对于起始浓度降低; 和(ii)从超顺磁珠分离的液滴。
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公开(公告)号:US09046514B2
公开(公告)日:2015-06-02
申请号:US12524495
申请日:2008-02-11
申请人: Ramakrishna Sista , Vamsee K. Pamula , Michael G. Pollack , Vijay Srinivasan , Allen E. Eckhardt , Richard B. Fair
发明人: Ramakrishna Sista , Vamsee K. Pamula , Michael G. Pollack , Vijay Srinivasan , Allen E. Eckhardt , Richard B. Fair
CPC分类号: G01N33/54326 , B01L3/502715 , B01L3/50273 , B01L3/502761 , B01L3/502784 , B01L2200/025 , B01L2200/028 , B01L2200/0647 , B01L2200/0673 , B01L2200/141 , B01L2300/0816 , B01L2300/0864 , B01L2300/0867 , B01L2400/0427 , B01L2400/043 , C12M25/01 , C12M25/16 , G01N27/44717 , G01N27/44786 , G01N33/54386 , G01N35/0098 , G01N2035/1046
摘要: A method of providing a droplet in contact with a magnetically responsive bead and having a reduced quantity of a substance. The method generally includes the steps of (a) providing a droplet actuator (200) comprising: (i) a substrate (210) comprising electrodes (214) arranged for conducting droplet operations on a surface; (ii) a starting droplet (218/222) comprising: (1) one or more magnetically responsive beads (220); (2) a starting quantity of the substance; and (3) a starting volume; (b) magnetically immobilizing the one or more magnetically responsive beads at a location which is at a distance from a target droplet splitting zone, (224); (c) conducting one or more droplet operations comprising droplet dividing operations selected to divide the combined droplet to yield a set of droplets comprising: (i) a droplet (218) comprising substantially all of the one or more magnetically responsive beads and having a decreased quantity of the substance relative to the starting concentration; and (ii) a droplet (222) substantially lacking the magnetically responsive beads.
摘要翻译: 提供与磁响应珠接触并具有减少的物质量的液滴的方法。 该方法通常包括以下步骤:(a)提供液滴致动器(200),包括:(i)包括布置用于在表面上进行液滴操作的电极(214)的基底(210) (ii)起始液滴(218/222),包括:(1)一个或多个磁响应珠(220); (2)物质的起始量; 和(3)起始体积; (b)将所述一个或多个磁响应珠磁性地固定在距离目标液滴分离区一段距离的位置处(224); (c)进行一个或多个液滴操作,其包括液滴分割操作,所述液滴分割操作被选择以分割组合的液滴以产生一组液滴,其包括:(i)液滴(218),其基本上包含所有一个或多个磁响应珠粒, 物质的数量相对于起始浓度; 和(ii)基本上不含磁响应珠的液滴(222)。
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公开(公告)号:US08846414B2
公开(公告)日:2014-09-30
申请号:US12569725
申请日:2009-09-29
申请人: Ramakrishna Sista , Vamsee K. Pamula , Arjun Sudarsan , Vijay Srinivasan , Michael G. Pollack , Richard B. Fair , Allen E. Eckhardt
发明人: Ramakrishna Sista , Vamsee K. Pamula , Arjun Sudarsan , Vijay Srinivasan , Michael G. Pollack , Richard B. Fair , Allen E. Eckhardt
IPC分类号: G01N33/553 , G01N33/68 , G01N33/543
CPC分类号: G01N33/6893 , G01N33/54366 , G01N2333/4712 , G01N2333/58 , G01N2800/32 , Y10T436/25
摘要: The present invention provides for the detection of cardiac markers on a droplet actuator. An aspect provides a method of assaying a cardiac marker in a biological sample from a subject, the method including providing a droplet actuator, loading the biological sample and assay reagents on the droplet actuator, executing droplet operations to create sample droplets from the sample and reagent droplets from the reagents on the droplet actuator, and executing droplet operations using the sample droplets and reagent droplets to produce a detectable signal indicative of the quantity of the cardiac marker in the biological sample. Still other aspects are provided.
摘要翻译: 本发明提供了在液滴致动器上检测心脏标志物。 一方面提供了从受试者的生物样品中测定心脏标志物的方法,所述方法包括提供液滴致动器,在液滴致动器上装载生物样品和测定试剂,执行液滴操作以从样品和试剂产生样品液滴 来自液滴致动器上的试剂的液滴,以及使用样品液滴和试剂液滴执行液滴操作,以产生指示生物样品中心脏标志物量的可检测信号。 还提供了其他方面。
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公开(公告)号:US20110114490A1
公开(公告)日:2011-05-19
申请号:US12985409
申请日:2011-01-06
IPC分类号: B01J8/08
CPC分类号: B01F11/0071 , B01F13/0071 , B01F13/0076 , B01L3/502715 , B01L3/502761 , B01L3/502784 , B01L3/502792 , B01L7/52 , B01L7/525 , B01L2200/027 , B01L2300/0654 , B01L2300/0816 , B01L2300/0861 , B01L2300/0864 , B01L2300/0867 , B01L2300/089 , B01L2300/1827 , B01L2400/0406 , B01L2400/0415 , B01L2400/0421 , B01L2400/0424 , B01L2400/0427 , B01L2400/043 , B01L2400/0436 , B01L2400/0442 , B03C1/01 , B03C1/288 , B03C2201/18 , G01N2035/1046
摘要: The invention provides a method of redistributing magnetically responsive beads in a droplet. The method may include providing a droplet including magnetically responsive beads. The droplet may be provided within a region of a magnetic field having sufficient strength to attract the magnetically responsive beads to an edge of the droplet or towards an edge of the droplet, or otherwise regionalize or aggregate beads within the droplet. The method may also include conducting on a droplet operations surface one or more droplet operations using the droplet without removing the magnetically responsive beads from the region of the magnetic field. The droplet operations may in some cases be electrode-mediated. The droplet operations may redistribute and/or circulate the magnetically responsive beads within the droplet. In some cases, the droplet may include a sample droplet may include a target analyte. The redistributing of the magnetically responsive beads may cause target analyte to bind to the magnetically responsive beads. In some cases, the droplet may include unbound substances in a wash buffer. The redistributing of the magnetically responsive beads causes unbound substances to be freed from interstices of an aggregated set or subset of the magnetically responsive beads.
摘要翻译: 本发明提供了一种在液滴中重新分布磁响应珠的方法。 该方法可以包括提供包括磁响应珠的液滴。 液滴可以设置在具有足够强度的磁场的区域内,以将磁响应珠吸引到液滴的边缘或朝向液滴的边缘,或以其他方式区分或聚集液滴内的珠粒。 该方法还可以包括在液滴操作表面上使用液滴进行一个或多个液滴操作,而不从磁场的区域移除磁响应珠。 在某些情况下,液滴操作可能是电极介导的。 液滴操作可以在液滴内重新分布和/或循环磁响应珠。 在一些情况下,液滴可以包括样品液滴可以包括靶分析物。 磁响应珠的重新分布可能导致目标分析物结合磁响应珠。 在一些情况下,液滴可以包括洗涤缓冲液中的未结合物质。 磁响应珠子的重新分布导致未结合物质从磁性响应珠粒的聚集或子集的空隙中释放出来。
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公开(公告)号:US08637324B2
公开(公告)日:2014-01-28
申请号:US13081927
申请日:2011-04-07
IPC分类号: G01N15/06
CPC分类号: G01N33/54333 , B01F11/0071 , B01F13/0071 , B01F13/0076 , B01L3/502715 , B01L3/502761 , B01L3/502784 , B01L3/502792 , B01L7/52 , B01L7/525 , B01L2200/027 , B01L2200/0647 , B01L2200/0668 , B01L2300/0654 , B01L2300/0816 , B01L2300/0861 , B01L2300/0864 , B01L2300/0867 , B01L2300/089 , B01L2300/1827 , B01L2400/0406 , B01L2400/0415 , B01L2400/0421 , B01L2400/0424 , B01L2400/0427 , B01L2400/043 , B01L2400/0436 , B01L2400/0442 , B03C1/02 , B03C1/288 , B03C1/30 , B03C5/005 , B03C2201/18 , B03C2201/26 , C12N15/1013 , G01N33/561 , G01N2035/1046 , Y10T436/11 , Y10T436/25 , Y10T436/25625 , Y10T436/2575
摘要: The present invention relates to bead incubating and washing on a droplet actuator. Methods for incubating magnetically responsive beads that are labeled with primary antibody, a sample (i.e., analyte), and secondary reporter antibodies on a magnet, on and off a magnet, and completely off a magnet are provided. Also provided are methods for washing magnetically responsive beads using shape-assisted merging of droplets. Also provided are methods for shape-mediated splitting, transporting, and dispensing of a sample droplet that contains magnetically responsive beads. The apparatuses and methods of the invention provide for rapid time to result and optimum detection of an analyte in an immunoassay.
摘要翻译: 本发明涉及在液滴致动器上的珠孵化和洗涤。 提供了用于将用一抗标记的磁响应珠,样品(即分析物)和二次报告基因抗体孵育在磁体上,磁铁上和从磁体上离开并完全离开磁体的方法。 还提供了使用形状辅助的液滴合并来洗涤磁响应珠的方法。 还提供了用于形状介导的分离,输送和分配含有磁响应珠的样品液滴的方法。 本发明的装置和方法提供了免疫测定中分析物的快速结果和最佳检测的时间。
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