Multi-dimensional electrophoresis method
First Claim
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1. An electrophoresis method, comprising:
- passing a sample introduced into a transport passage through a first analyte concentrator in the transport passage which captures a first analyte of interest and through a second analyte concentrator in the transport passage which captures a second analyte of interest;
the first analyte concentrator being in an intersection of the transport passage with a first separation passage;
the second analyte concentrator being in an intersection of the transport passage with a second separation passage;
eluting the captured first analyte of interest from the first analyte concentrator;
eluting the captured second analyte of interest from the second analyte concentrator;
passing the eluted first analyte of interest by at least electrophoresis migration via the first separation passage to a detector system which identifies and characterizes the first analyte of interest; and
passing the eluted second analyte of interest by at least electrophoresis migration via the second separation passage to the detector system which identifies and characterizes the second analyte of interest.
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Abstract
An electrophoresis apparatus is generally disclosed for sequentially analyzing a single sample or multiple samples having one or more analytes in high or low concentrations. The apparatus comprises a relatively large-bore transport capillary which intersects with a plurality of small-bore separation capillaries. Analyte concentrators, having antibody-specific (or related affinity) chemistries, are stationed at the respective intersections of the transport capillary and separation capillaries to bind one or more analytes of interest. The apparatus allows the performance of two or more dimensions for the optimal separation of analytes.
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Citations
56 Claims
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1. An electrophoresis method, comprising:
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passing a sample introduced into a transport passage through a first analyte concentrator in the transport passage which captures a first analyte of interest and through a second analyte concentrator in the transport passage which captures a second analyte of interest; the first analyte concentrator being in an intersection of the transport passage with a first separation passage; the second analyte concentrator being in an intersection of the transport passage with a second separation passage; eluting the captured first analyte of interest from the first analyte concentrator; eluting the captured second analyte of interest from the second analyte concentrator; passing the eluted first analyte of interest by at least electrophoresis migration via the first separation passage to a detector system which identifies and characterizes the first analyte of interest; and passing the eluted second analyte of interest by at least electrophoresis migration via the second separation passage to the detector system which identifies and characterizes the second analyte of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An electrophoresis method, comprising:
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introducing a sample into a transport passage; passing the introduced sample past a first portion of the transport passage which overlaps with an intersecting first separation passage so that a first analyte of interest in the sample is captured by a first analyte concentrator in the first portion; passing the introduced sample past a second portion of the transport passage which overlaps with an intersecting second separation passage so that a second analyte of interest in the sample is captured by a second analyte concentrator in the second portion; releasing the captured first analyte from the first analyte concentrator into the first separation passage; causing the released first analyte to pass at least by electrophoresis migration to a detector system which identifies and characterizes the first analyte; releasing the captured second analyte from the second analyte concentrator into the second separation passage; and causing the released second analyte to pass at least by electrophoresis migration to the detector system which identifies and characterizes the second analyte of interest. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An electrophoresis method, comprising:
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introducing a sample into a transport passage of an electrophoresis apparatus; the electrophoresis apparatus including a first separation passage intersecting the transport passage at a first overlapping portion, a first analyte concentrator at the first overlapping portion to concentrate a first analyte of interest, a second separation passage intersecting the transport passage at a second overlapping portion, and a second analyte concentrator at the second overlapping portion to concentrate a second analyte of interest; passing the introduced sample in the transport passage through the first overlapping portion whereby the first analyte of interest in the sample is concentrated in the first analyte concentrator; passing the introduced sample in the transport passage through the second overlapping portion whereby the second analyte of interest in the sample is concentrated in the second analyte concentrator; eluting the first analyte of interest concentrated in the first analyte concentrator into the first separation passage; eluting the second analyte of interest concentrated in the second analyte concentrator into the second separation passage; passing the eluted first analyte of interest in the first separation passage to a detector system which identifies and characterizes the first analyte of interest; and passing the eluted second analyte of interest in the second separation passage to the detector system which identifies and characterizes the second analyte of interest. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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40. An electrophoresis method, comprising:
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providing an electrophoresis apparatus which includes a transport passage, a separation passage, an analyte concentrator at an intersection of the transport and separation passages and adapted to attract an analyte of interest from a sample, and a detector system downstream of the analyte concentrator, the anode side of the electrophoresis apparatus being upstream of the analyte concentrator and the cathode side being downstream of the detector system; passing a sample in the transport passage through the analyte concentrator which concentrates the analyte of interest from the passing sample; after the passing the sample step, introducing eluting solution into an upstream end of the separation passage and thereby removing the concentrated analyte from the analyte concentrator; delivering the eluted analyte via the separation passage to the detector system; and identifying and characterizing the analyte using the detector system. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification