Highly simplified lateral flow-based nucleic acid sample preparation and passive fluid flow control
First Claim
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1. A method for processing a sample comprising target nucleic acids, the method comprising:
- adding a sample to a sample receiving zone and a first solution to a first solution zone;
transporting at least some of the sample to a capture zone via capillary flow along a central capillary flow path;
binding the target nucleic acids to the capture zone; and
delivering via capillary flow, at a desired time or sequence after the adding step, a first portion of the first solution via a first solution capillary flow path to the central capillary flow path or the capture zone, and a second portion of the first solution via a second solution capillary flow path to the central capillary flow path or the capture zone;
wherein the first solution is useful for processing the target nucleic acids prior to detecting the target nucleic acids.
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Abstract
Highly simplified lateral flow chromatographic nucleic acid sample preparation methods, devices, and integrated systems are provided for the efficient concentration of trace samples and the removal of nucleic acid amplification inhibitors. Methods for capturing and reducing inhibitors of nucleic acid amplification reactions, such as humic acid, using polyvinylpyrrolidone treated elements of the lateral flow device are also provided. Further provided are passive fluid control methods and systems for use in lateral flow assays.
99 Citations
29 Claims
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1. A method for processing a sample comprising target nucleic acids, the method comprising:
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adding a sample to a sample receiving zone and a first solution to a first solution zone; transporting at least some of the sample to a capture zone via capillary flow along a central capillary flow path; binding the target nucleic acids to the capture zone; and delivering via capillary flow, at a desired time or sequence after the adding step, a first portion of the first solution via a first solution capillary flow path to the central capillary flow path or the capture zone, and a second portion of the first solution via a second solution capillary flow path to the central capillary flow path or the capture zone; wherein the first solution is useful for processing the target nucleic acids prior to detecting the target nucleic acids. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for processing a sample comprising biological particles comprising target nucleic acids, the method comprising:
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adding a sample to a sample receiving zone, a lysis buffer to a buffer zone, and a first solution to a first solution zone; delivering the lysis buffer to the sample at a desired time or sequence after the adding step; lysing the biological particles in the sample, thereby liberating the target nucleic acids contained therein, transporting at least some constituents of the sample to a capture zone via capillary flow along a central capillary flow path; binding the target nucleic acids to the capture zone; and delivering via capillary flow, at a desired time or sequence after the adding step, a first portion of the first solution via a first solution capillary flow path to the central capillary flow path or the capture zone, and a second portion of the first solution via a second solution capillary flow path to the central capillary flow path or the capture zone; wherein the first solution is useful for processing the target nucleic acids prior to detecting the target nucleic acids. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification