Methods, systems and devices for multiple single-cell capturing and processing using microfluidics
First Claim
1. A method of amplifying mRNA sequences from individual eukaryotic cells using a microfluidic device configured to capture and to process individual cells from a plurality of cells, the method comprising:
- a) priming the microfluidic device by flowing one or more solutions through a plurality of capture configurations of the device;
b) flowing a cell suspension comprising the plurality of cells in solution through channels of the microfluidic device such that individual cells from the plurality of cells are captured at individual capture sites of the plurality of capture configurations, wherein each capture configuration comprisesa capture site comprising one or more physical barriers configured to capture a single cell, an input channel through which cells can flow towards the capture site, an output channel through which cells can flow away from the capture site, a drain channel, and one or more bypass channels, and the physical barriers, drain channel, and bypass channel(s) are configured so that when capture site is unoccupied by a cell solution flows past the one or more physical barriers into the drain channel, and from the drain channel into the output channel, and when the capture site is occupied by a captured cell, flow through the drain channel is blocked by the captured cell and cells that are not captured are diverted into a bypass channel;
c) lysing the plurality of captured individual cells at the individual capture sites of the microfluidic device thereby releasing RNA from the individual captured cells at the individual capture sites;
d) performing separate individual reverse transcription reactions, within the microfluidic device, on the RNA released from the individual lysed cells to produce reverse transcription products associated with each respective individual captured cell; and
e) performing PCR, within the microfluidic device, on the respective reverse transcription products associated with each respectively lysed individual cell to produce PCR products associated with each individual capture cell.
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Abstract
Methods, systems, and devices are described for multiple single-cell capturing and processing utilizing microfluidics. Tools and techniques are provided for capturing, partitioning, and/or manipulating individual cells from a larger population of cells along with generating genetic information and/or reactions related to each individual cell. Different capture configurations may be utilized to capture individual cells and then processing each individual cell in a multi-chamber reaction configuration. Some embodiments may provide for specific target amplification, whole genome amplification, whole transcriptome amplification, real-time PCR preparation, copy number variation, preamplification, mRNA sequencing, and/or haplotyping of the multiple individual cells that have been partitioned from the larger population of cells. Some embodiments may provide for other applications. Some embodiments may be configured for imaging the individual cells or associated reaction products as part of the processing. Reaction products may be harvested and/or further analyzed in some cases.
125 Citations
27 Claims
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1. A method of amplifying mRNA sequences from individual eukaryotic cells using a microfluidic device configured to capture and to process individual cells from a plurality of cells, the method comprising:
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a) priming the microfluidic device by flowing one or more solutions through a plurality of capture configurations of the device; b) flowing a cell suspension comprising the plurality of cells in solution through channels of the microfluidic device such that individual cells from the plurality of cells are captured at individual capture sites of the plurality of capture configurations, wherein each capture configuration comprises a capture site comprising one or more physical barriers configured to capture a single cell, an input channel through which cells can flow towards the capture site, an output channel through which cells can flow away from the capture site, a drain channel, and one or more bypass channels, and the physical barriers, drain channel, and bypass channel(s) are configured so that when capture site is unoccupied by a cell solution flows past the one or more physical barriers into the drain channel, and from the drain channel into the output channel, and when the capture site is occupied by a captured cell, flow through the drain channel is blocked by the captured cell and cells that are not captured are diverted into a bypass channel; c) lysing the plurality of captured individual cells at the individual capture sites of the microfluidic device thereby releasing RNA from the individual captured cells at the individual capture sites; d) performing separate individual reverse transcription reactions, within the microfluidic device, on the RNA released from the individual lysed cells to produce reverse transcription products associated with each respective individual captured cell; and e) performing PCR, within the microfluidic device, on the respective reverse transcription products associated with each respectively lysed individual cell to produce PCR products associated with each individual capture cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 23, 24, 25, 26, 27)
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17. A method of mRNA processing utilizing a microfluidic device configured to capture and to process individual cells from a plurality of cells, the method comprising:
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loading one or more solutions into the microfluidic device; priming the microfluidic device utilizing the one or more solutions; loading at least one or more lysis reagents or one or more reverse transcription reagents, into the microfluidic device; loading the plurality of cells into the microfluidic device; flowing the plurality of cells through the microfluidic device such that individual cells from the plurality of cells are captured at individual capture sites of the microfluidic device; imaging one or more of the captured individual cells on the microfluidic device; lysing the plurality of captured individual cells at the individual capture sites of the microfluidic device; performing reverse transcription, within the microfluidic device, on the plurality of individual lysed cells to produce reverse transcription products associated with each respective individual cell; performing polymerase-mediated amplification within the microfluidic device, on the respective reverse transcription products associated with each respectively lysed individual cell to produce PCR products associated with each individual capture cell; delivering the amplification products associated with each individual capture cell to a respective harvest inlet from a plurality of harvest inlets of the microfluidic device; removing one or more protective layers of one or more harvesting inlets; and
harvesting the amplification products from each respective harvest inlet from the plurality of harvest inlets of the microfluidic device. - View Dependent Claims (21, 22)
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Specification