Methods for in situ transcriptomics and proteomics
Disclosed herein, inter alia, are compositions and methods of use thereof for interrogating a cell.
1. A method of detecting a protein and a nucleic acid molecule in a cell in situ, said method comprising:
i) contacting the cell with a first polynucleotide probe and binding the first polynucleotide probe to the nucleic acid molecule, wherein the first polynucleotide probe comprises a first primer binding sequence and a first barcode sequence, wherein the first barcode sequence is from a known set of barcodes associated with the nucleic acid molecule;
ii) contacting the cell with a specific binding reagent and binding the specific binding reagent to the protein, wherein the specific binding reagent comprises an oligonucleotide comprising a second primer binding sequence and a second barcode sequence associated with the specific binding reagent, wherein the second barcode sequence is from a known set of barcodes associated with the protein; and
iii) hybridizing a first sequencing primer to the first primer binding sequence, and hybridizing a second sequencing primer to the second primer binding sequence, wherein the first sequencing primer and the second sequencing primer are different sequences, and
iv) incorporating one or more modified nucleotides into the first sequencing primer with a polymerase to create a first extension strand, and detecting the one or more incorporated nucleotides in a first optically resolvable feature, and, after generating the first extension strand, incorporating one or more modified nucleotides into the second sequencing primer with a polymerase to create a second extension strand, and detecting the one or more incorporated nucleotides in a second optically resolvable feature.
2. The method of claim 1 , wherein prior to step iii), the method further comprises amplifying the first polynucleotide probe to generate amplification products.
3. The method of claim 1 , wherein prior to step iii), the method further comprises hybridizing a second polynucleotide probe to the oligonucleotide and simultaneously amplifying the first polynucleotide probe and the second polynucleotide probe, thereby generating first amplification products comprising the first primer binding sequence or complement thereof, and the first barcode sequence, or complement thereof, and second amplification products comprising the second primer binding sequence, or complement thereof, and the second barcode sequence, or complement thereof.
4. The method of claim 1 , wherein the first polynucleotide probe is a circular polynucleotide.
5. The method of claim 1 , wherein the first polynucleotide probe is a single-stranded polynucleotide having a 5′ and a 3′ end.
6. The method of claim 5 , wherein binding the first polynucleotide probe comprises hybridizing the 5′ and 3′ ends of the polynucleotide probe to two adjacent nucleic acid sequences of the nucleic acid molecule.
7. The method of claim 5 , wherein binding the first polynucleotide probe comprises hybridizing the 3′ end of the first polynucleotide probe to a first complementary region of the nucleic acid molecule, and hybridizing the 5′ end of the first polynucleotide probe to a second complementary region of the nucleic acid molecule, wherein the second complementary region is about 1 or more nucleotides in the 5′ direction with respect to the first complementary region.
8. The method of claim 7 , wherein the first complementary region and the second complementary region of the nucleic acid molecule are separated by about 5 to about 75 nucleotides.
9. The method of claim 5 , further comprising ligating the 5′ and 3′ ends of the first polynucleotide probe to form a circular polynucleotide.
10. The method of claim 9 , wherein the circular polynucleotide comprises a sequence of the nucleic acid molecule, or complement thereof.
11. The method of claim 9 , further comprising amplifying the circular polynucleotide by extending an amplification primer with a strand-displacing polymerase, wherein the primer extension generates an extension product comprising multiple complements of the circular polynucleotide.
12. The method of claim 11 , further comprising hybridizing an immobilized primer to the extension product, wherein the immobilized primer is attached to the cell or a cellular component.
13. The method of claim 1 , wherein the specific binding reagent comprises an antibody, single-chain Fv fragment (scFv), antibody fragment-antigen binding (Fab), or an aptamer.
14. The method of claim 1 , further comprising incorporating a dideoxy nucleotide triphosphate (ddNTP) into the first extension strand prior to hybridizing the second sequencing primer.
15. The method of claim 14 , wherein the first and second optically resolvable features overlap.
16. The method of claim 3 , wherein the amplification products are attached to the cell or a cellular component.
17. The method of claim 1 , wherein the cell is permeabilized and immobilized to a solid support surface.
18. The method of claim 17 , wherein the solid support surface comprises a patterned surface suitable for immobilization of a plurality of cells in an ordered pattern.
19. The method of claim 1 , wherein the method does not comprise lysing the cell.
20. The method of claim 1 , further comprising obtaining an image of the cell.
21. The method of claim 1 , wherein the first polynucleotide probe and the specific binding reagent are not immobilized to a solid support.
22. The method of claim 1 , further comprising determining the cell morphology.
23. The method of claim 1 , wherein the method is performed simultaneously in at least 1000 cells.
24. The method of claim 3 , wherein the second polynucleotide probe is a circular polynucleotide.
25. The method of claim 3 , wherein the second polynucleotide probe is a single-stranded polynucleotide having a 5′ and a 3′ end.
26. The method of claim 25 , wherein binding the second polynucleotide probe comprises hybridizing the 3′ end of the second polynucleotide probe to a first complementary region of the oligonucleotide, and hybridizing the 5′ end of the second polynucleotide probe to a second complementary region of the oligonucleotide, wherein the second complementary region is about 5 or more nucleotides in the 5′ direction with respect to the first complementary region.
27. A method of detecting a protein and a nucleic acid molecule in a cell, said method comprising:
i) contacting the cell with a specific binding reagent and binding the specific binding reagent to the protein, wherein the specific binding reagent comprises an oligonucleotide;
ii) contacting the cell with a first polynucleotide probe comprising a first barcode sequence, and binding the first polynucleotide probe to the nucleic acid molecule;
iii) contacting the cell with a second polynucleotide probe comprising a second barcode sequence, and binding the second polynucleotide probe to the oligonucleotide;
iv) amplifying the first polynucleotide probe thereby forming a first amplification product comprising the first barcode sequence, or complement thereof, and amplifying the second polynucleotide probe thereby forming a second amplification product comprising the second barcode sequence, or complement thereof;
v) hybridizing a first sequencing primer to the first amplification product and sequencing the first barcode sequence, or a complement thereof; followed by hybridizing a second sequencing primer to the second amplification product and sequencing the second barcode sequence.
28. A method of detecting a protein and a nucleic acid molecule in a cell, said method comprising:
i) contacting the cell with a specific binding reagent and binding the specific binding reagent to the protein, wherein the specific binding reagent comprises an oligonucleotide;
ii) contacting the cell with a first polynucleotide probe comprising a first barcode sequence, and binding the first polynucleotide probe to the nucleic acid molecule;
iii) contacting the cell with a second polynucleotide probe comprising a second barcode sequence, and binding the second polynucleotide probe to the oligonucleotide;
iv) amplifying the first polynucleotide probe thereby forming a first amplification product comprising the first barcode sequence, or complement thereof, and amplifying the second polynucleotide probe thereby forming a second amplification product comprising the second barcode sequence, or complement thereof;
v) hybridizing a first sequencing primer to the second amplification product and sequencing the second barcode sequence, or a complement thereof; followed by hybridizing a second sequencing primer to the first amplification product and sequencing the first barcode sequence, or complement thereof.