Methods and systems for processing polynucleotides
The present disclosure provides compositions, methods, systems, and devices for polynucleotide processing and analyte characterization. Such polynucleotide processing may be useful for a variety of applications, including analyte characterization by polynucleotide sequencing. The compositions, methods, systems, and devices disclosed herein generally describe barcoded oligonucleotides, which can be bound to a bead, such as a gel bead, useful for characterizing one or more analytes including, for example, protein (e.g., cell surface or intracellular proteins), genomic DNA, and RNA (e.g., mRNA or CRISPR guide RNAs). Also described herein, are barcoded labelling agents and oligonucleotide molecules useful for “tagging” analytes for characterization.
1. A method for analyzing a tissue sample comprising:
(a) contacting a plurality of cells with a plurality of labelling molecules to generate a plurality of labelled cells, wherein said plurality of labelling molecules comprise a plurality of cell barcode sequences, and wherein a labelled cell of said plurality of labelled cells comprises (i) a cell barcode sequence that is different from cell barcode sequences of other labelled cells of said plurality of labelled cells and (ii) a plurality of analytes;
(b) generating a plurality of partitions comprising said plurality of labelled cells and a plurality of partition nucleic acid barcode molecules, wherein said plurality of partition nucleic acid barcode molecules comprises a plurality of partition barcode sequences, wherein a partition of said plurality of partitions comprises a partition barcode sequence that is different from partition barcode sequences of other partitions of said plurality of partitions, wherein a partition nucleic acid barcode molecule of said plurality of partition nucleic acid barcode molecules is configured to couple to an analyte from said plurality of analytes, wherein said analyte comprises messenger ribonucleic acid (mRNA), and wherein said plurality of partitions comprises at least one partition comprising more than one labelled cell of said plurality of labelled cells, and wherein said partition comprises more than one labelled cell of said plurality of labelled cells;
(c) using partition nucleic acid barcode molecules of said plurality of partition nucleic acid barcode molecules to generate (i) a first plurality of barcoded nucleic acid products, wherein a barcoded nucleic acid product of said first plurality of barcoded nucleic acid products comprises (1) said cell barcode sequence or complement thereof and (2) said partition barcode sequence or complement thereof, and (ii) a second plurality of barcoded nucleic acid products, wherein a barcoded nucleic acid product of said second plurality of barcoded nucleic acid products comprises (1) said partition barcode sequence or complement thereof and (2) a sequence corresponding to said analyte or complement thereof; and
(d) identifying at least two labelled cells of said plurality of labelled cells as originating from said partition using (i) cell barcode sequences from said plurality of cell barcode sequences or complements thereof and (ii) partition nucleic acid barcode sequences of said plurality of partition nucleic acid barcode sequences or complements thereof.
2. The method of claim 1 , wherein said second plurality of barcoded nucleic acid products is synthesized via one or more primer extension reactions.
3. The method of claim 1 , wherein said first plurality of barcoded nucleic acid products is synthesized via one or more ligation reactions.
4. The method of claim 1 , wherein said first plurality of barcoded nucleic acid products is synthesized via one or more nucleic acid amplification reactions.
5. The method of claim 1 , wherein said plurality of partition nucleic acid barcode molecules is coupled to a plurality of supports.
6. The method of claim 5 , wherein said plurality of supports is a plurality of beads.
7. The method of claim 6 , wherein said plurality of beads is a plurality of gel beads.
8. The method of claim 5 , wherein after (b), said plurality of partition nucleic acid barcode molecules is released from said plurality of supports.
9. The method of claim 7 , wherein after (b), said plurality of partition nucleic acid barcode molecules is released from said plurality of gel beads.
10. The method of claim 1 , wherein said plurality of partitions is a plurality of droplets.
11. The method of claim 1 , wherein said plurality of partitions is a plurality of wells.
12. The method of claim 1 , wherein, in (a), said plurality of labelling molecules comprises a plurality of cell binding moieties, wherein a cell binding moiety of said plurality of cell binding moieties is coupled to a cell barcode molecule comprising said cell barcode sequence of said plurality of cell barcode sequences.
13. The method of claim 12 , wherein said plurality of cell binding moieties comprises a plurality of antibodies, cell surface receptor binding molecules, receptor ligands, small molecules, pro-bodies, aptamers, monobodies, affimers, darpins, or protein scaffolds.
14. The method of claim 13 , wherein said plurality of cell binding moieties comprises a plurality of antibodies.
15. The method of claim 12 , wherein said plurality of cell binding moieties binds to proteins or cell surface species of cells of said plurality of cells.
16. The method of claim 1 , wherein said partition nucleic acid barcode molecules comprise an analyte barcode molecule configured to couple to said analyte, wherein said analyte barcode molecule comprises a sequence corresponding to said analyte.
17. The method of claim 16 , wherein said analyte barcode molecule comprises a priming sequence configured to hybridize to said analyte.
18. The method of claim 17 , wherein said priming sequence is an oligo(dT) sequence or a random N-mer sequence.
19. The method of claim 1 , wherein, in (a), said plurality of labelling molecules comprises a plurality of cell membrane labelling agents, wherein a cell membrane labelling agent of said plurality of cell membrane labelling agents is coupled to a cell barcode molecule comprising said cell barcode sequence.
20. The method of claim 19 , wherein said cell membrane labelling agent is selected from the group consisting of a lipid, a fluorophore, a dye, a peptide, and a nanoparticle.
21. The method of claim 1 , wherein said tissue sample is a fixed tissue sample.
22. The method of claim 12 , wherein a wherein said cell binding moiety comprises a lipophilic moiety.
23. The method of claim 22 , wherein said lipophilic moiety is selected from the group consisting of an amphiphilic molecule, a tocopherol or derivative thereof, a steryl lipid, lignoceric acid, and palmitic acid.
24. The method of claim 22 , wherein said lipophilic moiety is a cholesterol moiety.