Target capture system
First Claim
1. A method for isolating a pathogen from a sample, the method comprisingremovably coupling a vessel comprising a pathogen-containing sample to a cartridge via a cartridge interface that is configured to provide communication between the vessel and the cartridge;
- flowing magnetic particles conjugated to a capture moiety from the cartridge into the vessel to form a mixture;
flowing the mixture from the vessel into the cartridge;
flowing a fluid from the cartridge into the vessel to flush residual mixture from the vessel into the cartridge; and
incubating the mixture in the cartridge to allow the particles to bind to the pathogen;
applying a magnetic field to capture pathogen/magnetic particle complexes on a surface of a first magnetic trap;
washing the captured pathogen/magnetic particle complexes with a wash solution, thereby isolating the pathogen/magnetic particle complexes;
removing the magnetic field;
re-introducing the wash solution, thereby re-suspending the pathogen/magnetic particle complexes;
flowing the re-suspended pathogen/magnetic particle complexes through a channel and into a second magnetic trap; and
engaging the second magnetic trap, thereby re-capturing the pathogen/magnetic particle complexes;
wherein the first magnetic trap is configured to capture the pathogen/magnetic particle complexes from a macro-scale volume of fluid, and the second magnetic trap is configured to concentrate substantially all of the pathogen/magnetic particle complexes into a micro-scale volume of fluid.
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Accused Products
Abstract
The invention generally relates to a system for isolating or separating a target from a sample. In certain aspects, processes performed by the target capture system include introducing a plurality of magnetic particles, in which a plurality of the particles include at least one binding moiety specific to a target, into a sample to form at least one target/particle complex and applying a magnetic field to isolate the magnetic particle/target complexes from the sample. The process starts at inputting a sample into the system and ends at delivering a capture target or nucleic acids of the target into a container for further analysis.
336 Citations
17 Claims
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1. A method for isolating a pathogen from a sample, the method comprising
removably coupling a vessel comprising a pathogen-containing sample to a cartridge via a cartridge interface that is configured to provide communication between the vessel and the cartridge; -
flowing magnetic particles conjugated to a capture moiety from the cartridge into the vessel to form a mixture; flowing the mixture from the vessel into the cartridge; flowing a fluid from the cartridge into the vessel to flush residual mixture from the vessel into the cartridge; and incubating the mixture in the cartridge to allow the particles to bind to the pathogen; applying a magnetic field to capture pathogen/magnetic particle complexes on a surface of a first magnetic trap; washing the captured pathogen/magnetic particle complexes with a wash solution, thereby isolating the pathogen/magnetic particle complexes; removing the magnetic field; re-introducing the wash solution, thereby re-suspending the pathogen/magnetic particle complexes; flowing the re-suspended pathogen/magnetic particle complexes through a channel and into a second magnetic trap; and engaging the second magnetic trap, thereby re-capturing the pathogen/magnetic particle complexes; wherein the first magnetic trap is configured to capture the pathogen/magnetic particle complexes from a macro-scale volume of fluid, and the second magnetic trap is configured to concentrate substantially all of the pathogen/magnetic particle complexes into a micro-scale volume of fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification