Combinatorial photo-controlled spatial sequencing and labeling
Methods of labeling or barcoding molecules within one or more portions of a plurality of cells are provided. Kits and systems for labeling or barcoding molecules within one or more portions of a plurality of cells are also provided. The methods, kits, and systems may utilize photo-controlled adapter sequences, nucleic acids tags, and/or linkers.
1. A method of labeling molecules within one or more portions of a plurality of cells, the method comprising:
(a) coupling at least one photo-controlled adapter sequence to molecules within the plurality of cells;
(b) exposing a first portion of the plurality of cells to photonic energy to activate the at least one photo-controlled adapter sequence within the first portion of the plurality of cells;
(c) providing primary nucleic acid tags to the plurality of cells;
(d) coupling the activated photo-controlled adapter sequences within the first portion of the plurality of cells with the provided primary nucleic acid tags;
(e) exposing a second portion of the plurality of cells to photonic energy to activate the at least one photo-controlled adapter sequence and/or the primary nucleic acid tags within the second portion of the plurality of cells;
(f) providing secondary nucleic acid tags to the plurality of cells;
(g) coupling the activated photo-controlled adapter sequence and/or the activated primary nucleic acid tags within the second portion of the plurality of cells with the provided secondary nucleic acid tags, and
(h) permeabilizing at least a portion of the plurality of cells to nucleic acids and polypeptides prior to step (a).
2. The method of claim 1 , further comprising:
repeating steps (b), (c), and (d) with subsequent nucleic acid tags and within subsequent portions of the plurality of cells, wherein steps (b), (c), and (d) are repeated a number of times sufficient to generate a unique series of nucleic acid tags for the molecules within a specific portion of the plurality of cells.
3. The method of claim 1 , further comprising:
(i) repeating steps (e), (f), and (g) with subsequent nucleic acid tags and within subsequent portions of the plurality of cells, wherein step (i) is repeated a number of times sufficient to generate a unique series of nucleic acid tags for the molecules within a specific portion of the plurality of cells.
4. The method of claim 3 , wherein the number of times is selected from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, and 100.
5. The method of claim 3 , wherein the majority of the nucleic acid tag-bound nucleic acids from the specific portion of the plurality of cells comprise the same series of bound nucleic acid tags.
6. The method of claim 1 , further comprising:
identifying a portion of the plurality of cells having molecules that are not to be labeled;
exposing the identified portion of the plurality of cells to photonic energy prior to step (b); and
treating the plurality of cells with an agent that deactivates the photo-controlled adapter sequence, wherein the agent is at least one of a phosphatase, a specific oligonucleotide to be filtered out, a blocking oligonucleotide having a higher binding energy to the photo-controlled adapter sequence than the nucleic acid tags, an enzyme that specifically destroys or modifies an uncaged sequence, and a protein that binds to an exposed specific protein binding site.
7. The method of claim 1 , wherein the photo-controlled adapter sequence is a photocaged adapter sequence comprising a hybridization domain, the hybridization domain comprising one or more photocaged nucleic acids.
8. The method of claim 1 , wherein the photo-controlled adapter sequence is a photocleavable adapter sequence comprising:
a hybridization domain;
a domain at least partially complementary to the hybridization domain; and
a photocleavable linker coupling the hybridization domain and the domain at least partially complementary to the hybridization domain.
9. The method of claim 1 , further comprising:
treating the plurality of cells with an agent that deactivates the photo-controlled adapter sequence prior to step (b), wherein the agent is at least one of a phosphatase, a specific oligonucleotide to be filtered out, a blocking oligonucleotide having a higher binding energy to the photo-controlled adapter sequence than the nucleic acid tags, an enzyme that specifically destroys or modifies an uncaged sequence, and a protein that binds to an exposed specific protein binding site.
10. The method of claim 1 , further comprising:
fixing the plurality of cells prior to step (a).
11. The method of claim 1 , wherein the plurality of cells is selected from a portion of at least one of a mammal, a plant, a Danio species, a Drosophila species, a Caenorhabditis species, and a bacterium.
12. The method of claim 1 , wherein the molecules are selected from at least one of RNA, cDNA, DNA, protein, peptide, and antigen.
13. A method of labeling nucleic acids within a first portion of a plurality of cells, the method comprising:
(a) generating complementary DNAs (cDNAs) within the plurality of cells comprising the first portion by reverse transcribing RNAs using a reverse transcription primer, the reverse transcription primer comprising:
a first hybridization domain;
a domain at least partially complementary to the first hybridization domain; and
a photo-controlled linker coupling the first hybridization domain and the domain at least partially complementary to the first hybridization domain;
(b) exposing the first portion of the plurality of cells to photonic energy to activate a portion of the photo-controlled linkers within the first portion;
(c) providing primary nucleic acid tags to the plurality of cells, wherein each of the primary nucleic acid tags comprises:
a domain complementary to the first hybridization domain; and
a primary barcode domain;
(d) coupling the activated photo-controlled linkers within the first portion with the provided primary nucleic acid tags;
(e) providing secondary nucleic acid tags to the plurality of cells, wherein each of the secondary nucleic acid tags comprises:
a secondary barcode domain at least partially complementary to the primary barcode domain;
a second hybridization domain;
a domain at least partially complementary to the second hybridization domain; and
a second photo-controlled linker coupling the second hybridization domain with the domain at least partially complementary to the second hybridization domain;
(f) coupling a portion of the primary nucleic acid tags within the first portion with the secondary nucleic acid tags;
(g) exposing the first portion of the plurality of cells to photonic energy to activate a portion of the second photo-controlled linkers within the first portion;
(h) repeating steps (e), (f), and (g) with subsequent nucleic acid tags, and
(i) permeabilizing at least a portion of the plurality of cells to nucleic acids and polypeptides prior to step (a).
14. The method of claim 13 , further comprising:
repeating steps (b), (c), and (d) with subsequent nucleic acid tags, wherein steps (b), (c), and (d) are repeated a number of times sufficient to generate a unique series of barcode domains within the first portion of the plurality of cells.
15. The method of claim 13 , wherein step (h) is repeated a number of times sufficient to generate a unique series of barcode domains within the first portion of the plurality of cells, wherein the number of times is selected from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, and 100.
16. The method of claim 13 , wherein at least one of the reverse transcription primer and the secondary nucleic acid tags further comprises a second photocleavable linker.
17. The method of claim 13 , further comprising:
treating the plurality of cells with an agent that deactivates the photo-controlled linkers prior to step (b), wherein the agent is at least one of a phosphatase, a specific oligonucleotide to be filtered out, a blocking oligonucleotide having a higher binding energy to the photo-controlled adapter sequence than the nucleic acid tags, an enzyme that specifically destroys or modifies an uncaged sequence, and a protein that binds to an exposed specific protein binding site.
18. The method of claim 13 , further comprising:
fixing the plurality of cells prior to step (a).
19. The method of claim 13 , wherein the plurality of cells is selected from a portion of at least one of a mammal, a plant, a Danio species, a Drosophila species, a Caenorhabditis species, and a bacterium.