Spatially distinguished, multiplex nucleic acid analysis of biological specimens
A method for spatially tagging nucleic acids of a biological specimen, including steps of (a) providing a solid support comprising different nucleic acid probes that are randomly located on the solid support, wherein the different nucleic acid probes each includes a barcode sequence that differs from the barcode sequence of other randomly located probes on the solid support; (b) performing a nucleic acid detection reaction on the solid support to locate the barcode sequences on the solid support; (c) contacting a biological specimen with the solid support that has the randomly located probes; (d) hybridizing the randomly located probes to target nucleic acids from portions of the biological specimen; and (e) modifying the randomly located probes that are hybridized to the target nucleic acids, thereby producing modified probes that include the barcode sequences and a target specific modification, thereby spatially tagging the nucleic acids of the biological specimen.
1. A method for determining the spatial location of a target nucleic acid in a biological specimen, comprising:
(a) providing a solid support comprising a population of nucleic acids randomly located across a population of features of said solid support, wherein the nucleic acids comprise a spatial tag sequence and a primer binding sequence, and wherein the spatial tag sequence differs from spatial tag sequences of other nucleic acids in the population;
(b) performing a sequencing reaction to determine the spatial tag sequences, or complements thereof, of the nucleic acids located across the population of features on the solid support, thereby determining the positions of the spatial tag sequences on the solid support;
(c) contacting a biological specimen with the solid support;
(d) hybridizing a target nucleic acid from the biological specimen to a capture sequence on a randomly located nucleic acid that is proximal to the target nucleic acid;
(e) producing a nucleic acid that comprises a sequence complementary to the target nucleic acid hybridized to the capture sequence, or a portion thereof, a spatial tag sequence or a complement thereof, and a primer binding sequence or a complement thereof; and
(f) determining the sequence of the spatial tag sequence or complement thereof, and all or a portion of the target nucleic acid sequence, or a complement thereof, thereby determining the spatial location of the target nucleic acid in the biological specimen.
2. The method of claim 1 , wherein the population of features is selected from the group consisting of pits, wells, channels, ridges, raised regions, pegs, posts and beads.
3. The method of claim 2 , wherein the population of features on the solid support have an average pitch of less than 10 82 m.
4. The method of claim 2 , wherein the population of features on the solid support have an average pitch of less than 5 μm.
5. The method of claim 2 , wherein the population of features on the solid support have an average pitch of less than 1 μm.
6. The method of claim 1 , wherein the solid support comprises fiducial markers.
7. The method of claim 1 , wherein the solid support comprises a gel coating.
8. The method of claim 1 , wherein the solid support is located in or on a flow cell.
9. The method of claim 1 , wherein capture sequences on the nucleic acids comprise different target capture sequences that hybridize to different target nucleic acids from the biological specimen.
10. The method of claim 1 , wherein capture sequences on the nucleic acids comprise a common target capture sequence, and the common target capture sequence comprises a polyT or polyA sequence.
11. The method of claim 1 , wherein the method further comprises a step of acquiring an image of the biological specimen in contact with the solid support, and a step of correlating the determined spatial tag sequences, or complements thereof, at the randomly located positions on the solid support with locations in the image of the biological specimen.
12. The method of claim 1 , wherein producing the nucleic acid in step (e) comprises extending the capture sequence using the captured target nucleic acid as a template.
13. The method of claim 12 , further comprises amplifying the nucleic acid with a primer complementary to the primer binding sequence, thereby generating an amplification product comprising all or a portion of the target nucleic acid, or a complement thereof, and the spatial tag sequence, or a complement thereof.
14. The method of claim 13 , wherein amplifying is selected from the group consisting of polymerase chain reaction, rolling circle amplification, multiple strand displacement amplification, and random prime amplification.
15. The method of claim 14 , wherein amplifying is polymerase chain reaction.
16. The method of claim 14 , wherein amplifying is rolling circle amplification.
17. The method of claim 1 , wherein determining the sequence in step (f) comprises sequencing.
18. The method of claim 17 , wherein sequencing comprises sequencing-by-synthesis, sequencing-by-hybridization or sequencing-by-ligation.
19. The method of claim 1 , wherein the biological specimen that is contacted with the solid support is a mixture of cells, and step (c) further comprises contacting the cells to the solid support and/or lysing the cells to release the target nucleic acid from the cells.
20. The method of claim 1 , wherein the biological specimen that is contacted with the solid support is a tissue, and step (c) further comprises contacting the tissue to the solid support and/or permeabilizing the tissue to release the target nucleic acid from the tissue.
21. The method of claim 1 , wherein the target nucleic acid is RNA.
22. The method of claim 21 , wherein the RNA is mRNA.
23. The method of claim 1 , wherein the target nucleic acid is DNA.
24. The method of claim 23 , wherein the DNA is genomic DNA.
25. The method of claim 1 , wherein the method further comprises staining the biological specimen.