Analysis using microfluidic partitioning devices
First Claim
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1. An assay method comprising(a) using a microfluidic device to distribute a sample into a plurality of sub-samples, wherein each sub-sample is distributed into a reaction site by the action of flow channels, control channels and valves:
- (i) said sample comprises a rare cell in a background of other cells, wherein the rare cell is less than 1% of the cells in the sample, and(ii) at least two sub-samples comprise exactly one cell each, one of which is said rare cell;
(b) providing the same reagents in each sub-sample;
(c) conducting a reaction in each sub-sample; and
(d) analyzing the results of each reaction to detect at least two properties of a cell, at least one of which identifies the rare cell, wherein at least one cell analyzed comprises said rare cell.
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Abstract
The invention relates to methods, reagents and devices for detection and characterization of nucleic acids, cells, and other biological samples. Assay method are provided in which a sample is partitioned into sub-samples, and analysis of the contents of the sub-samples carried out. The invention also provides microfluidic devices for conducting the assay. The invention also provides an analysis method using a universal primers and probes for amplification and detection.
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22 Claims
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1. An assay method comprising
(a) using a microfluidic device to distribute a sample into a plurality of sub-samples, wherein each sub-sample is distributed into a reaction site by the action of flow channels, control channels and valves: -
(i) said sample comprises a rare cell in a background of other cells, wherein the rare cell is less than 1% of the cells in the sample, and (ii) at least two sub-samples comprise exactly one cell each, one of which is said rare cell; (b) providing the same reagents in each sub-sample; (c) conducting a reaction in each sub-sample; and (d) analyzing the results of each reaction to detect at least two properties of a cell, at least one of which identifies the rare cell, wherein at least one cell analyzed comprises said rare cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification