Method for separating analyte from a sample
First Claim
1. A method for extracting nucleic acid from a sample, the sample containing cells, spores, or microorganisms, the method comprising:
- a) introducing the sample into a cartridge having;
i) a lysing region for lysing the cells, spores, or microorganisms to release the nucleic acid therefrom and;
ii) a desiccant adjacent to the lysing region; and
iii) at least one waste chamber;
b) contacting the sample with a paper or membrane material in the lysing region, the paper or membrane material being impregnated with at least one chemical for lysing the cells, spores, or microorganisms in the sample, under conditions where the cells, spores, or microorganisms in the sample are lysed, while drying the sample on the paper or the membrane material by heating and absorbing moisture with the desiccant;
c) binding the nucleic acid released from the cells, spores, or microorganisms to the paper or membrane material;
d) washing the lysing region with wash fluid and forcing the wash fluid to flow from the lysing region into the at least one waste chamber while the nucleic acid remains bound to the paper or membrane material in the lysing region; and
e) eluting the nucleic acid from the paper or membrane material.
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Abstract
An analyte is separated from a fluid sample by introducing the sample into a cartridge having a sample port and a first flow path extending from the sample port. The first flow path includes an extraction chamber containing a solid support for capturing the analyte from the sample. The cartridge has a second flow path for eluting the captured analyte from the extraction chamber, the second flow diverging from the first flow path after passing through the extraction chamber. The sample is forced to flow through the extraction chamber and into a waste chamber, thereby capturing the analyte with the solid support as the sample flows through the extraction chamber. The captured analyte is then eluted from the extraction chamber by forcing an elution fluid to flow through the extraction chamber and along the second flow path.
199 Citations
18 Claims
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1. A method for extracting nucleic acid from a sample, the sample containing cells, spores, or microorganisms, the method comprising:
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a) introducing the sample into a cartridge having; i) a lysing region for lysing the cells, spores, or microorganisms to release the nucleic acid therefrom and; ii) a desiccant adjacent to the lysing region; and iii) at least one waste chamber; b) contacting the sample with a paper or membrane material in the lysing region, the paper or membrane material being impregnated with at least one chemical for lysing the cells, spores, or microorganisms in the sample, under conditions where the cells, spores, or microorganisms in the sample are lysed, while drying the sample on the paper or the membrane material by heating and absorbing moisture with the desiccant; c) binding the nucleic acid released from the cells, spores, or microorganisms to the paper or membrane material; d) washing the lysing region with wash fluid and forcing the wash fluid to flow from the lysing region into the at least one waste chamber while the nucleic acid remains bound to the paper or membrane material in the lysing region; and e) eluting the nucleic acid from the paper or membrane material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification