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 spatially tagging target nucleic acids of a biological specimen, comprising:
(a) providing a plurality of nucleic acid primers attached to a solid support, wherein the nucleic acid primers in the plurality comprise a universal primer sequence that is common to the nucleic acid primers in the plurality;
(b) randomly distributing and binding a population of nucleic acid probes to the plurality of nucleic acid primers, wherein the nucleic acid probes comprise a universal primer binding sequence that hybridizes to the universal primer sequence, a target capture sequence, and a spatial tag sequence that differs from spatial tag sequences of other nucleic acid probes in the population, thereby attaching the nucleic acid probes at randomly located positions on the solid support;
(c) amplifying the nucleic acid probes by extension of the nucleic acid primers, thereby producing nucleic acid clusters having copies of the spatial tag sequence and target capture sequence at the randomly located positions on the solid support;
(d) performing a sequencing reaction to determine the spatial tag sequences at the randomly located positions on the solid support, thereby determining the position of each of the spatial tag sequences on the solid support;
(e) contacting a biological specimen with the nucleic acid clusters on the solid support;
(f) hybridizing the target capture sequences of the nucleic acid clusters to target nucleic acids from portions of the biological specimen that are proximal to the nucleic acid clusters; and
(g) extending the target capture sequences to produce extended probes that comprise sequences of the target nucleic acids, or portions thereof, and the copies of the spatial tag sequences, thereby spatially tagging the target nucleic acids of the biological specimen.
2. The method of claim 1 , wherein the nucleic acid clusters on the solid support have an average pitch of less than 10 μm and/or an average area of less than 100 μm 2 .
3. The method of claim 1 , wherein the method further comprises attaching the plurality of nucleic acid primers to the solid support, wherein the solid support comprises a pattern of discrete features.
4. The method of claim 1 , wherein the solid support comprises a gel coating, wherein the plurality of nucleic acid primers is attached to the gel coating.
5. The method of claim 4 , wherein in step (c), a second plurality of nucleic acid primers is further attached to the gel coating, the nucleic acid primers in the second plurality comprise a second universal primer sequence that is common to the nucleic acid primers in the second plurality, the nucleic acid probes comprise a second universal primer binding sequence that hybridizes to the second universal primer sequence, and the amplifying comprises bridge amplification.
6. The method of claim 1 , wherein different nucleic acid probes comprise different target capture sequences that hybridize to different target nucleic acids from the biological specimen.
7. The method of claim 1 , wherein different nucleic acid probes comprise a common target capture sequence, and the common target capture sequence comprises a poly T or poly A sequence.
8. The method of claim 1 , further comprising 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 at the randomly located positions on the solid support with locations in the image of the biological specimen.
9. The method of claim 1 , further comprising removing the extended probes from the solid support and determining the sequences of the target nucleic acids or portions thereof, and the spatial tag sequences for the extended probes that have been removed from the solid support.
10. The method of claim 9 , wherein determining the sequences of the target nucleic acids, or portions thereof, and the spatial tag sequences for the extended probes that have been removed from the solid support comprises sequencing-by-synthesis.
11. The method of claim 1 , further comprising removing the extended probes from the solid support and attaching the extended probes that have been removed from the solid support to a second solid support.
12. The method of claim 1 , wherein the solid support is located in or on a flow cell during step (d), and the solid support is removed from the flow cell during step (e) or the flow cell is opened to expose the solid support during step (e).
13. The method of claim 1 , wherein the biological specimen that is contacted with the solid support is a mixture of cells, and step (e) further comprises attaching the cells to the solid support and/or lysing the cells to release the target nucleic acids from the cells.
14. The method of claim 1 , wherein the biological specimen that is contacted with the solid support is a tissue, and step (e) further comprises attaching the tissue to the solid support and/or permeabilizing the tissue to release the target nucleic acids from the tissue.
15. The method of claim 1 , wherein the target nucleic acids are selected from the group consisting of mRNA, gDNA, rRNA, and tRNA.
16. The method of claim 1 , wherein a second plurality of nucleic acid primers is attached to the solid support, wherein the nucleic acid primers in the second plurality comprise a second universal primer sequence that is common to the nucleic acid primers in the second plurality.
17. The method of claim 16 , wherein the nucleic acid probes comprise a second universal primer binding sequence that hybridizes to the second universal primer sequence.
18. The method of claim 17 , wherein the amplifying of the nucleic acid probes comprises bridge amplification wherein the nucleic acid primers in the first and second plurality are extended.
19. The method of claim 1 , further comprising, after step (c), digesting the nucleic acid clusters with a restriction enzyme, thereby revealing the target capture sequences.
20. A method for spatially tagging target nucleic acids of a biological specimen, comprising:
(a) providing a plurality of nucleic acid primers attached to a solid support, wherein the nucleic acid primers in the plurality comprise a universal primer sequence that is common to the nucleic acid primers in the plurality;
(b) randomly distributing and binding a population of nucleic acid probes to the plurality of nucleic acid primers, wherein the nucleic acid probes comprise a universal primer binding sequence that hybridizes to the universal primer sequence, a target capture sequence, and a spatial tag sequence that differs from spatial tag sequences of other nucleic acid probes in the population, thereby attaching the nucleic acid probes at randomly located positions on the solid support;
(c) amplifying the nucleic acid probes by extension of the nucleic acid primers, thereby producing nucleic acid clusters having copies of the spatial tag sequence and target capture sequence at the randomly located positions on the solid support;
(d) performing a nucleic acid detection reaction to determine the spatial tag sequences at the randomly located positions on the solid support, thereby determining the position of each of the spatial tag sequences on the solid support;
(e) contacting a biological specimen with the nucleic acid clusters on the solid support;
(f) hybridizing the target capture sequences of the nucleic acid clusters to target nucleic acids from portions of the biological specimen that are proximal to the nucleic acid clusters; and
(g) extending the target capture sequences to produce extended probes that comprise sequences of the target nucleic acids, or portions thereof, and the copies of the spatial tag sequences, thereby spatially tagging the target nucleic acids of the biological specimen.
21. The method of claim 20 , wherein the nucleic acid detection reaction comprises a decoder probe hybridization reaction.
22. The method of claim 20 , wherein the nucleic acid detection reaction comprises a sequencing-by-ligation reaction.