Assays and other reactions involving droplets
    4.
    发明授权
    Assays and other reactions involving droplets 有权
    测定和其他涉及液滴的反应

    公开(公告)号:US09029085B2

    公开(公告)日:2015-05-12

    申请号:US12529926

    申请日:2008-03-07

    摘要: The present invention generally relates to droplets and/or emulsions, such as multiple emulsions. In some cases, the droplets and/or emulsions may be used in assays, and in certain embodiments, the droplet or emulsion may be hardened to form a gel. In some aspects, a heterogeneous assay can be performed using a gel. For example, a droplet may be hardened to form a gel, where the droplet contains a cell, DNA, or other suitable species. The gel may be exposed to a reactant, and the reactant may interact with the gel and/or with the cell, DNA, etc., in some fashion. For example, the reactant may diffuse through the gel, or the hardened particle may liquefy to form a liquid state, allowing the reactant to interact with the cell. As a specific example, DNA contained within a gel particle may be subjected to PCR (polymerase chain reaction) amplification, e.g., by using PCR primers able to bind to the gel as it forms. As the DNA is amplified using PCR, some of the DNA will be bound to the gel via the PCR primer. After the PCR reaction, unbound DNA may be removed from the gel, e.g., via diffusion or washing. Thus, a gel particle having bound DNA may be formed in one embodiment of the invention.

    摘要翻译: 本发明通常涉及液滴和/或乳液,例如多重乳液。 在一些情况下,液滴和/或乳液可用于测定中,并且在某些实施方案中,液滴或乳液可被硬化以形成凝胶。 在一些方面,可以使用凝胶进行异质测定。 例如,液滴可以被硬化以形成凝胶,其中液滴包含细胞,DNA或其它合适的物质。 凝胶可以暴露于反应物,并且反应物可以以某种方式与凝胶和/或与细胞,DNA等相互作用。 例如,反应物可以扩散通过凝胶,或者硬化的颗粒可以液化以形成液体状态,允许反应物与细胞相互作用。 作为具体实例,包含在凝胶颗粒内的DNA可以进行PCR(聚合酶链式反应)扩增,例如通过使用能够在形成凝胶时结合凝胶的PCR引物。 当使用PCR扩增DNA时,一些DNA将通过PCR引物与凝胶结合。 PCR反应后,未结合的DNA可以从凝胶中去除,例如通过扩散或洗涤。 因此,可以在本发明的一个实施方案中形成具有结合DNA的凝胶颗粒。

    ASSAYS AND OTHER REACTIONS INVOLVING DROPLETS
    6.
    发明申请
    ASSAYS AND OTHER REACTIONS INVOLVING DROPLETS 有权
    测量和其他涉及倾销的反应

    公开(公告)号:US20100136544A1

    公开(公告)日:2010-06-03

    申请号:US12529926

    申请日:2008-03-07

    IPC分类号: C12Q1/68 C12Q1/04

    摘要: The present invention generally relates to droplets and/or emulsions, such as multiple emulsions. In some cases, the droplets and/or emulsions may be used in assays, and in certain embodiments, the droplet or emulsion may be hardened to form a gel. In some aspects, a heterogeneous assay can be performed using a gel. For example, a droplet may be hardened to form a gel, where the droplet contains a cell, DNA, or other suitable species. The gel may be exposed to a reactant, and the reactant may interact with the gel and/or with the cell, DNA, etc., in some fashion. For example, the reactant may diffuse through the gel, or the hardened particle may liquefy to form a liquid state, allowing the reactant to interact with the cell. As a specific example, DNA contained within a gel particle may be subjected to PCR (polymerase chain reaction) amplification, e.g., by using PCR primers able to bind to the gel as it forms. As the DNA is amplified using PCR, some of the DNA will be bound to the gel via the PCR primer. After the PCR reaction, unbound DNA may be removed from the gel, e.g., via diffusion or washing. Thus, a gel particle having bound DNA may be formed in one embodiment of the invention.

    摘要翻译: 本发明通常涉及液滴和/或乳液,例如多重乳液。 在一些情况下,液滴和/或乳液可用于测定中,并且在某些实施方案中,液滴或乳液可被硬化以形成凝胶。 在一些方面,可以使用凝胶进行异质测定。 例如,液滴可以被硬化以形成凝胶,其中液滴包含细胞,DNA或其它合适的物质。 凝胶可以暴露于反应物,并且反应物可以以某种方式与凝胶和/或与细胞,DNA等相互作用。 例如,反应物可以扩散通过凝胶,或者硬化的颗粒可以液化以形成液体状态,允许反应物与细胞相互作用。 作为具体实例,包含在凝胶颗粒内的DNA可以进行PCR(聚合酶链式反应)扩增,例如通过使用能够在形成凝胶时结合凝胶的PCR引物。 当使用PCR扩增DNA时,一些DNA将通过PCR引物与凝胶结合。 PCR反应后,未结合的DNA可以从凝胶中去除,例如通过扩散或洗涤。 因此,可以在本发明的一个实施方案中形成具有结合DNA的凝胶颗粒。

    DROPLET-BASED SELECTION
    7.
    发明申请
    DROPLET-BASED SELECTION 审中-公开
    基于DROPLET的选择

    公开(公告)号:US20120015382A1

    公开(公告)日:2012-01-19

    申请号:US13195468

    申请日:2011-08-01

    IPC分类号: G01N33/53 G01N21/64

    摘要: The present invention generally relates to fluidic droplets, and techniques for screening or sorting such fluidic droplets. In some embodiments, the fluidic droplets may contain cells (e.g., hybridoma cells) that can secrete various species, such as antibodies, for example. In one aspect, a plurality of fluidic droplets containing cells is screened to determine proteins, antibodies, polypeptides, peptides, nucleic acids, or the like. For example, cells able to secrete species such as antibodies may be selected according to certain embodiments of the invention. Examples of such cells include, for instance, immortal cells such as hybridomas, or non-immortal cells such as B-cells. For instance, blood cells may be encapsulated within a plurality of fluidic droplets, and the cells able to produce antibodies may be determined. In some cases, expression or secretion levels may be determined using signaling entities, for example, determinable microparticles present within the fluidic droplet. Other aspects of the invention relate to kits involving such fluidic droplets, methods of promoting the making or use of such fluidic droplets, and the like.

    摘要翻译: 本发明一般涉及流体液滴,以及用于筛选或分类这种流体液滴的技术。 在一些实施方案中,流体液滴可以含有可分泌各种物质例如抗体的细胞(例如,杂交瘤细胞)。 在一个方面,筛选含有细胞的多个流体液滴以确定蛋白质,抗体,多肽,肽,核酸等。 例如,可以根据本发明的某些实施方案来选择能够分泌诸如抗体的物质的细胞。 这些细胞的实例包括,例如,诸如杂交瘤的永生细胞,或非永生细胞如B细胞。 例如,血细胞可以被包封在多个流体液滴中,并且可以确定能产生抗体的细胞。 在一些情况下,表达或分泌水平可以使用信号实体来确定,例如存在于流体液滴内的可测定的微粒。 本发明的其它方面涉及涉及这种流体液滴的试剂盒,促进制造或使用这种流体液滴的方法等。

    DROPLET-BASED SELECTION
    8.
    发明申请
    DROPLET-BASED SELECTION 审中-公开
    基于DROPLET的选择

    公开(公告)号:US20090068170A1

    公开(公告)日:2009-03-12

    申请号:US12172186

    申请日:2008-07-11

    摘要: The present invention generally relates to fluidic droplets, and techniques for screening or sorting such fluidic droplets. In some embodiments, the fluidic droplets may contain cells (e.g., hybridoma cells) that can secrete various species, such as antibodies, for example. In one aspect, a plurality of fluidic droplets containing cells is screened to determine proteins, antibodies, polypeptides, peptides, nucleic acids, or the like. For example, cells able to secrete species such as antibodies may be selected according to certain embodiments of the invention. Examples of such cells include, for instance, immortal cells such as hybridomas, or non-immortal cells such as B-cells. For instance, blood cells may be encapsulated within a plurality of fluidic droplets, and the cells able to produce antibodies may be determined. In some cases, expression or secretion levels may be determined using signaling entities, for example, determinable microparticles present within the fluidic droplet. Other aspects of the invention relate to kits involving such fluidic droplets, methods of promoting the making or use of such fluidic droplets, and the like.

    摘要翻译: 本发明一般涉及流体液滴,以及用于筛选或分类这种流体液滴的技术。 在一些实施方案中,流体液滴可以含有可分泌各种物质例如抗体的细胞(例如,杂交瘤细胞)。 在一个方面,筛选含有细胞的多个流体液滴以确定蛋白质,抗体,多肽,肽,核酸等。 例如,可以根据本发明的某些实施方案来选择能够分泌诸如抗体的物质的细胞。 这些细胞的实例包括,例如,诸如杂交瘤的永生细胞,或非永生细胞如B细胞。 例如,血细胞可以被包封在多个流体液滴中,并且可以确定能产生抗体的细胞。 在一些情况下,表达或分泌水平可以使用信号实体来确定,例如存在于流体液滴内的可测定的微粒。 本发明的其它方面涉及涉及这种流体液滴的试剂盒,促进制造或使用这种流体液滴的方法等。

    ACOUSTIC WAVES IN MICROFLUIDICS
    10.
    发明申请
    ACOUSTIC WAVES IN MICROFLUIDICS 有权
    微波中的声波

    公开(公告)号:US20130213488A1

    公开(公告)日:2013-08-22

    申请号:US13818146

    申请日:2011-08-23

    IPC分类号: C12M3/06 F17D3/01

    摘要: Various aspects of the present invention relate to the control and manipulation of fluidic species, for example, in microfluidic systems. In one set of embodiments, droplets may be sorted using surface acoustic waves. The droplets may contain cells or other species. In some cases, the surface acoustic waves may be created using a surface acoustic wave generator such as an interdigitated transducer, and/or a material such as a piezoelectric substrate. The piezoelectric substrate may be isolated from the microfluidic substrate except at or proximate the location where the droplets are sorted, e.g., into first or second microfluidic channels. At such locations, the microfluidic substrate may be coupled to the piezoelectric substrate (or other material) by one or more coupling regions. In some cases, relatively high sorting rates may be achieved, e.g., at rates of at least about 1,000 Hz, at least about 10,000 Hz, or at least about 100,000 Hz, and in some embodiments, with high cell viability after sorting.

    摘要翻译: 本发明的各个方面涉及流体物质的控制和操作,例如在微流体系统中。 在一组实施例中,可以使用表面声波对液滴进行分类。 液滴可能含有细胞或其他物种。 在一些情况下,表面声波可以使用表面声波发生器(例如交叉换能器)和/或诸如压电基板的材料来产生。 压电衬底可以与微流体衬底隔离,除了在液滴被分类的位置处或附近,例如,进入第一或第二微流体通道。 在这样的位置处,微流体衬底可以通过一个或多个耦合区域耦合到压电衬底(或其它材料)。 在一些情况下,可以例如以至少约1000Hz,至少约10,000Hz或至少约100,000Hz的速率实现相对较高的分选率,并且在一些实施方案中,分选后具有高的细胞活力。