Compositions and methods for analyte detection
Methods of making a three-dimensional matrix of nucleic acids within a cell is provided.
1. A method for biological analysis, comprising:
(a) providing a biological sample comprising a plurality of cells, wherein a cell of said plurality of cells comprises a first analyte and a second analyte;
(b) contacting said biological sample with a first detection reagent and a second detection reagent to bind said first detection reagent to said first analyte and said second detection reagent to said second analyte,
wherein said first detection reagent comprises (i) a first probe that binds to said first analyte and (ii) a first one or more predetermined sequences, and
wherein said second detection reagent comprises (i) a second probe that binds to said second analyte and (ii) a second one or more predetermined sequences, and
wherein at least one predetermined sequence of said second one or more predetermined sequences is different than at least one predetermined sequence of said first one or more predetermined sequences;
(c) detecting, in a temporally sequential manner: (i) said first one or more predetermined sequences to obtain a first temporal order of signal signatures indicative of said first analyte and (ii) said second one or more predetermined sequences to obtain a second temporal order of signal signatures indicative of said second analyte;
(d) using said first temporal order of signal signatures to identify said first analyte and using said second temporal order of signal signatures to identify said second analyte; and
(e) using a location of said first temporal order of signal signatures and a location of said second temporal order of signal signatures to determine that said first analyte and said second analyte are both located in said cell.
2. The method of claim 1 , wherein said first analyte and said second analyte are nucleic acid molecules.
3. The method of claim 2 , wherein said nucleic acid molecules are deoxyribonucleic acid (DNA) molecules.
4. The method of claim 2 , wherein said nucleic acid molecules are ribonucleic acid (RNA) molecules.
5. The method of claim 4 , wherein said RNA molecules are messenger RNA molecules.
6. The method of claim 1 , wherein said first analyte and said second analyte are protein molecules.
7. The method of claim 6 , wherein said first probe comprises a first antibody and wherein said second probe comprises a second antibody.
8. The method of claim 1 , wherein said first analyte is a ribonucleic acid (RNA) molecule and said second analyte is a protein molecule.
9. A method for messenger ribonucleic acid (mRNA) expression analysis, comprising:
(a) providing a biological sample comprising a plurality of cells, wherein a cell of said plurality of cells comprises a first mRNA molecule and a second mRNA molecule, wherein said first mRNA molecule and said second mRNA molecule have different sequences, wherein said first mRNA molecule is assigned a first temporal order of signal signatures that identifies said first mRNA molecule, wherein said second mRNA molecule is assigned a second temporal order of signal signatures that identifies said second mRNA molecule, and wherein said second temporal order of signal signatures is different than said first temporal order of signal signatures;
(b) contacting said biological sample with a first detection reagent and a second detection reagent to hybridize said first detection reagent to said first mRNA molecule and said second detection reagent to said second mRNA molecule,
wherein said first detection reagent comprises a first nucleic acid molecule comprising (i) a first probe sequence complementary to a sequence of said first mRNA molecule and (ii) a first one or more predetermined sequences,
wherein said second detection reagent comprises a second nucleic acid molecule comprising (i) a second probe sequence complementary to a sequence of said second mRNA molecule and (ii) a second one or more predetermined sequences, and
wherein at least one predetermined sequence of said second one or more predetermined sequences is different than at least one predetermined sequence of said first one or more predetermined sequences;
(c) detecting, in a temporally sequential manner: (i) said first one or more predetermined sequences to obtain said first temporal order of signal signatures and (ii) said second one or more predetermined sequences to obtain said second temporal order of signal signatures, thereby identifying said first mRNA molecule and said second mRNA molecule; and
(d) using a location of said first temporal order of signal signatures and a location of said second temporal order of signal signatures to determine that said first mRNA molecule and said second mRNA molecule are both located in said cell.
10. The method of claim 9 , wherein (c) comprises, with said first detection reagent bound to said first mRNA molecule and said second detection reagent bound to said second mRNA molecule, using a plurality of decoder probes and a plurality of detectable labels in a plurality of temporally sequential readout cycles to detect a first plurality of signal signatures associated with said first one or more predetermined sequences and a second plurality of signal signatures associated with said second one or more predetermined sequences.
11. The method of claim 10 , wherein an agreement between a temporal order of said first plurality of signal signatures with said first temporal order of signal signatures identifies said first mRNA molecule in said biological sample and wherein an agreement between a temporal order of said second plurality of signal signatures with said second temporal order of signal signatures identifies said second mRNA molecule in said biological sample.
12. The method of claim 9 , wherein said first temporal order of signal signatures comprises one or more signal signatures characterized by an absence of signal associated with said first one or more predetermined sequences.
13. The method of claim 12 , wherein said second temporal order of signal signatures comprises one or more signal signatures characterized by an absence of signal associated with said second one or more predetermined sequences.
14. The method of claim 11 , wherein (c) comprises, with said first detection reagent bound to said first mRNA molecule and said second detection reagent bound to said second mRNA molecule, using a plurality of decoder probes and a plurality of optical labels in a plurality of temporally sequential readout cycles to detect a first plurality of optical signal signatures associated with said first RNA molecule and a second plurality of optical signal signatures associated with said second RNA molecule.
15. The method of claim 14 , wherein said plurality of optical labels comprise a fluorophore.
16. The method of claim 15 , wherein each optical label of said plurality of optical labels comprises the same fluorescent color.
17. The method of claim 15 , wherein at least some optical labels of said plurality of optical labels comprise a different fluorescent color.
18. The method of claim 15 , wherein said first temporal order of signal signatures comprises one or more signal signatures characterized by an absence of fluorescent color associated with said first one or more predetermined sequences.
19. The method of claim 18 , wherein said second temporal order of signal signatures comprises one or more signal signatures characterized by an absence of fluorescent color associated with said second one or more predetermined sequences.
20. The method of claim 14 , wherein each decoder probe of said plurality of decoder probes is conjugated to at least one optical label of said plurality of optical labels.
21. The method of claim 20 , wherein each decoder probe of said plurality of decoder probes is conjugated to said at least one optical label via a linker.
22. The method of claim 14 , wherein each decoder probe of said plurality of decoder probes is indirectly attached to at least one optical label of said plurality of optical labels.
23. The method of claim 22 , wherein each decoder probe of said plurality of decoder probes is indirectly attached to said at least one optical label via a non-covalent bond.
24. The method of claim 22 , wherein each decoder probe of said plurality of decoder probes is indirectly attached to said at least one optical label via an intermediary molecule.
25. The method of claim 22 , wherein each decoder probe of said plurality of decoder probes is indirectly attached to said at least one optical label via a binding molecule that hybridizes to each decoder probe.
26. A method for messenger ribonucleic acid (mRNA) expression analysis, comprising:
(a) providing a biological sample comprising a plurality of cells, wherein said biological sample is immobilized on a solid support, wherein a cell of said plurality of cells comprises a first mRNA molecule and a second mRNA molecule, wherein said first mRNA molecule and said second mRNA molecule have different sequences, wherein said first mRNA molecule is assigned a first temporal order of signal signatures that identifies said first mRNA molecule, wherein said second mRNA molecule is assigned a second temporal order of signal signatures that identifies said second mRNA molecule, and wherein said second temporal order of signal signatures is different than said first temporal order of signal signatures;
(b) contacting said biological sample with a plurality of detection reagents to provide a first detection reagent of said plurality of detection reagents bound to said first mRNA molecule and a second detection reagent of said plurality of detection reagents bound to said second mRNA molecule,
wherein said first detection reagent is a first nucleic acid molecule comprising (i) a first probe sequence that hybridizes to said first mRNA molecule, (ii) a first predetermined sequence 5 or more nucleotides in length and (iii) a second predetermined sequence 5 or more nucleotides in length, and
wherein said second detection reagent is a second nucleic acid molecule comprising (i) a second probe sequence that hybridizes to said second mRNA molecule, (ii) a third predetermined sequence 5 or more nucleotides in length, and (iii) a fourth predetermined sequence 5 or more nucleotides in length;
(c) removing unbound detection reagents of said plurality of detection reagents;
(d) contacting said biological sample with a plurality of decoder probes in a plurality of temporally sequential readout cycles to obtain said first temporal order of signal signatures and said second temporal order of signal signatures, wherein said plurality of temporally sequential readout cycles comprises:
(i) using a first decoder probe to associate a first optical label with said first predetermined sequence; detecting said first optical label to obtain a first signal signature; and removing said first signal signature from said first predetermined sequence;
(ii) using a second decoder probe to associate a second optical label with said second predetermined sequence; detecting said second optical label to obtain a second signal signature; and removing said second signal signature from said second predetermined sequence;
(iii) using a third decoder probe to associate a third optical label with said third predetermined sequence; detecting said third optical label to obtain a third signal signature; and removing said third signal signature from said third predetermined sequence; and
(iv) using a fourth decoder probe to associate a fourth optical label with said fourth predetermined sequence; detecting said fourth optical label to obtain a fourth signal signature; and removing said fourth signal signature from said fourth predetermined sequence;
wherein said first temporal order of signal signatures comprises a temporal order of at least said first signal signature and said second signal signature and wherein said second temporal order of signal signatures comprises a temporal order of at least said third signal signature and said fourth signal signature; and
(e) using a location of said first temporal order of signal signatures and a location of said second temporal order of signal signatures to determine that said first mRNA molecule and said second mRNA molecule are both located in said cell.
27. The method of claim 26 , wherein said first optical label, said second optical label, said third optical label or said fourth optical label comprises a fluorophore.
28. The method of claim 27 , wherein said first temporal order of signal signatures further comprises one or more signal signatures characterized by an absence of fluorescent color associated with said first plurality of predetermined sequences.
29. The method of claim 28 , wherein said second temporal order of signal signatures further comprises one or more signal signatures characterized by an absence of fluorescent color associated with said second plurality of predetermined sequences.
30. The method of claim 26 , wherein (d)(i)-(d)(iv) are performed in any order.