Multiplex labeling of molecules by sequential hybridization barcoding
The present invention, among other things, provides technologies for detecting and/or quantifying nucleic acids in cells, tissues, organs or organisms. In some embodiments, through sequential barcoding, the present invention provides methods for high-throughput profiling of a large number of targets, such as transcripts and/or DNA loci.
1. A method, comprising steps of:
(a) contacting a sample comprising a plurality of target nucleic acids with a first plurality of detectably labelled oligonucleotides to form a composition, which composition comprises at least:
(i) a first detectably labelled oligonucleotide that interacts with a first target nucleic acid; and
(ii) a second detectably labelled oligonucleotide that interacts with a second target nucleic acid;
wherein the first detectably labelled oligonucleotide is different from the second detectably labelled oligonucleotide and wherein all target nucleic acids comprise RNA;
(b) imaging the sample after the first contacting step so that interaction of the detectably labelled oligonucleotides with their target nucleic acid is detected;
(c) repeating the contacting and imaging steps, each time with a new plurality of detectably labelled oligonucleotides,
so that a target nucleic acid in the sample is described by a barcode, and can be differentiated from another target nucleic acid in the sample by a difference in their barcodes.
2. The method of claim 1 wherein at least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids.
3. The method of claim 1 , wherein each detectably labelled oligonucleotide comprises a detectable moiety and at least one contacting step differs from another contacting step by having a different detectable moiety for the first target nucleic acid or for the second target nucleic acid.
4. The method of claim 1 , wherein at least two different detectably labeled oligonucleotides interact with the first target nucleic acid, and wherein at least two different detectably labeled oligonucleotides interact with the second target nucleic acid.
5. The method of claim 2 , wherein at least five contacting steps differ from one another in the labelling of the first target nucleic acid and at least five contacting steps differ from one another in the labelling of the second target nucleic acids.
6. The method of claim 5 , wherein at least five different detectably labeled oligonucleotides interact with the first target nucleic acid, and wherein at least five different detectably labeled oligonucleotides interact with the second target nucleic acid.
7. The method of claim 2 wherein the target nucleic acids are DNA loci.
8. The method of claim 2 wherein the target nucleic acids are transcripts.
9. The method of claim 2 wherein the detectably labelled oligonucleotides each comprise the same label.
10. The method of claim 1 wherein the labels of the detectably labelled oligonucleotides differ from each other.
11. The method of claim 2 wherein the detectably labelled oligonucleotides comprise labels selected from two, three, or four different labels.
12. The method of claim 2 wherein each detectably labelled oligonucleotide interacts with its target nucleic acid through one or more intermediate oligonucleotides each of which is hybridized to the target nucleic acid.
13. The method of claim 12 wherein each intermediate oligonucleotide comprises a sequence complementary to its target nucleic acid and an overhang sequence.
14. The method of claim 13 wherein the overhang sequence is complementary to a detectably labelled oligonucleotide.
15. The method of claim 13 wherein the overhang sequence is complementary to a bridge oligonucleotide.
16. The method of claim 15 wherein the bridge oligonucleotide is complementary to a detectably labelled oligonucleotide.
17. The method of claim 12 wherein the intermediate oligonucleotides are preserved through multiple contacting and imaging steps.
18. The method of claim 2 or 12 , wherein each repeated imaging step comprises imaging the sample after a repeated contacting step so that hybridization by the plurality of detectably labeled oligonucleotides is detected.
19. The method of claim 2 or 12 wherein the detectably labelled oligonucleotides are removed after one or more imaging steps.
20. The method of claim 19 , wherein the step of removing comprises contacting the plurality of detectably labeled oligonucleotides with an enzyme that digests a detectably labeled oligonucleotide.
21. The method of claim 19 , wherein the step of removing comprises contacting the plurality of detectably labeled oligonucleotides with a DNase, photobleaching, strand displacement, formamide wash, heat denaturation, or combinations thereof.
22. The method of claim 19 wherein the detectably labelled oligonucleotides are removed by photobleaching.
23. The method of claim 1 , wherein the barcode for the target nucleic acid in the sample is different where there is not signal for the target nucleic acid in the sample.
24. The method of claim 2 or 12 , wherein the at least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids by having no signal for at least one of the first and second target nucleic acids.
25. The method of claim 2 , wherein the at least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids by having a different detectably labelled oligonucleotide for the first target nucleic acid or for the second target nucleic acid.
26. The method of claim 2 , wherein the at least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids by having a different intermediate oligonucleotide for the first target nucleic acid or for the second target nucleic acid.
27. The method of claim 2 , wherein at the least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids by having a different label for the first target nucleic acid or for the second target nucleic acid.
28. The method of claim 2 or 12 , wherein the barcode for the target nucleic acid in the sample includes no signal for one or more of the contacting steps.
29. The method of claim 2 or 12 , wherein a signal is amplified.
30. The method of claim 2 or 12 , wherein a signal is amplified by hybridization chain reaction.
31. The method of claim 1 or 2 , wherein the method targets up to F N target nucleic acids, wherein F is the number of types of detectable moieties and N is the number of detectably labeled oligonucleotides for a target.
32. The method of claim 31 , wherein the method comprises N contacting steps.
33. The method of claim 31 , wherein the method comprises more than N contacting steps.
34. The method of claim 31 , wherein the barcode for a target nucleic acid includes no signal for one or more of the contacting steps.
35. The method of claim 2 , wherein the sample is cleared.
36. The method of claim 2 , wherein the sample is cleared by CLARITY.
37. The method of claim 2 or 12 , wherein each detectably labelled oligonucleotide comprises two or more detectable moieties.
38. The method of claim 1 , wherein the first target nucleic acid is different from the second target nucleic acid.
39. The method of claim 12 , wherein the first target nucleic acid is different from the second target nucleic acid.
40. The method of claim 24 , wherein the first target nucleic acid is different from the second target nucleic acid.
41. The method of claim 12 wherein the detectably labelled oligonucleotides each comprise the same label.
42. The method of claim 2 or 12 wherein the detectably labelled oligonucleotides each comprise the same label and the same sequence.
43. The method of claim 1 wherein each detectably labelled oligonucleotide interacts with its target nucleic acid through one or more intermediate oligonucleotides each of which is hybridized to the target nucleic acid.
44. The method of claim 38 , wherein at least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids by having no signal for at least one of the first and second target nucleic acids.
45. The method of claim 38 , wherein at least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids by having a different detectably labelled oligonucleotide for the first target nucleic acid or for the second target nucleic acid.
46. The method of claim 38 , wherein at least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids by having a different intermediate oligonucleotide for the first target nucleic acid or for the second target nucleic acid.
47. The method of claim 38 , wherein at least one contacting step differs from another contacting step in the labelling of at least one of the first and second target nucleic acids by having a different label for the first target nucleic acid or for the second target nucleic acid.
48. The method of claim 4 , wherein one new plurality of detectably labelled oligonucleotides comprises a new detectably labelled oligonucleotide, different from the first detectably labelled oligonucleotide, that interacts with the first target nucleic acid and one new plurality of detectably labelled oligonucleotides comprises another new detectably labelled oligonucleotide, different from the second detectably labelled oligonucleotide, that interacts with the second target nucleic acid.
49. The method of claim 1 wherein the sample comprises a tissue.
50. The method of claim 12 wherein the sample comprises a tissue.
51. The method of claim 1 wherein the sample comprises a cell.
52. The method of claim 12 wherein the sample comprises a cell.
53. The method of claim 1 wherein the sample is processed from a cell.
54. The method of claim 12 wherein the sample is processed from a cell.
55. The method of claim 1 wherein the sample comprises extracted nucleic acid.
56. The method of claim 12 wherein the sample comprises extracted nucleic acid.