Detection of nucleic acid sequence differences using the ligase detection reaction with addressable arrays
The present invention describes a method for identifying one or more of a plurality of sequences differing by one or more single base changes, insertions, deletions, or translocations in a plurality of target nucleotide sequences. The method includes a ligation phase, a capture phase, and a detection phase. The ligation phase utilizes a ligation detection reaction between one oligonucleotide probe, which has a target sequence-specific portion and an addressable array-specific portion, and a second oligonucleotide probe, having a target sequence-specific portion and a detectable label. After the ligation phase, the capture phase is carried out by hybridizing the ligated oligonucleotide probes to a solid support with an array of immobilized capture oligonucleotides at least some of which are complementary to the addressable array-specific portion. Following completion of the capture phase, a detection phase is carried out to detect the labels of ligated oligonucleotide probes hybridized to the solid support.
1. An instrument comprising:
a solid support comprising at least 25 types of capture oligonucleotides immobilized on the solid support at an array of positions, wherein each type of capture oligonucleotide is greater than 16 nucleotides and differs in nucleotide sequence, when aligned to another type of capture oligonucleotide that is located on an adjacent position of said solid support, by at least 25%;
one or more nucleic acid molecules hybridized to complementary portions of the one or more capture oligonucleotides on said solid support, wherein the capture oligonucleotides hybridize to the complementary portions of the nucleic acid molecules under uniform hybridization conditions; and
an imager configured to detect the hybridized nucleic acid molecules.
2. The instrument of claim 1 , wherein the solid support comprises a high-density array of capture oligonucleotides immobilized thereto.
3. The instrument of claim 1 , wherein the solid support comprises 25 to 1200 types of capture oligonucleotides.
4. The instrument of claim 1 , wherein the solid support comprises at least 1000 types of capture oligonucleotides.
5. The instrument of claim 1 , wherein the one or more nucleic acid molecules each comprise an addressable array-specific portion comprising a nucleotide sequence that is complementary to the capture oligonucleotide sequence, and a target nucleotide portion comprising a nucleotide sequence that is the same as, or complementary to, a target nucleotide sequence.
6. The instrument of claim 5 , wherein the target nucleotide portions of the nucleic acid molecules are greater than 16 nucleotides.
7. The instrument of claim 1 , wherein the nucleic acid molecules comprise amplification products, or complements thereof, of one or more cellular target nucleic acid molecules.
8. The instrument of claim 1 , wherein each capture oligonucleotide on the solid support comprises 20-25mers.
9. The instrument of claim 1 , wherein each type of capture oligonucleotide differs in nucleotide sequence, when aligned to any other type of capture oligonucleotide of said solid support, by at least 25%.
10. The instrument of claim 1 , wherein the imager is a fluorescence imager and the nucleic acid molecules hybridized to the one or more capture oligonucleotides each comprise a fluorescent label suitable for detection by the fluorescence imager.
11. An instrument comprising:
a solid support comprising at least 25 types of capture oligonucleotides immobilized on the solid support, wherein capture oligonucleotides at an array position on the solid support comprise the same nucleotide sequence and wherein each type of capture oligonucleotide is greater than 16 nucleotides and differs in nucleotide sequence, when aligned to another type of capture oligonucleotide that is located on an adjacent position of said solid support, by at least 25%;
one or more nucleic acid molecules hybridized to complementary portions of the one or more capture oligonucleotides on said solid support, wherein the capture oligonucleotides hybridize to the complementary portions of the nucleic acid molecules under uniform hybridization conditions and wherein the one or more nucleic acid molecules each comprise an addressable array-specific portion comprising a nucleotide sequence that is complementary to the capture oligonucleotide sequence, and a target nucleotide portion comprising a nucleotide sequence that is the same as, or complementary to, a target nucleotide sequence; and
a fluorescence imager configured to detect the hybridized nucleic acid molecules, wherein the nucleic acid molecules hybridized to the one or more capture oligonucleotides each comprise a fluorescent label suitable for detection by the fluorescence imager.
12. The instrument of claim 11 , wherein the solid support comprises a high-density array of capture oligonucleotides immobilized thereto.
13. The instrument of claim 11 , wherein the solid support comprises 25 to 1200 types of capture oligonucleotides.
14. The instrument of claim 11 , wherein the solid support comprises at least 1000 types of capture oligonucleotides.
15. The instrument of claim 11 , wherein the target nucleotide portions of the nucleic acid molecule are greater than 16 nucleotides.
16. The instrument of claim 11 , wherein the nucleic acid molecules comprise amplification products, or complements thereof, of one or more cellular target nucleic acid molecules.
17. The instrument of claim 11 , wherein two or more different hybridized nucleic acid molecules at an array position comprise different fluorescent labels.
18. The instrument of claim 17 , wherein four different hybridized nucleic acid molecules at an array position comprise four different fluorescent labels.
19. The instrument of claim 11 , wherein two different hybridized nucleic acid molecules at an array position comprise different fluorescent labels.
20. The instrument of claim 11 , wherein two or more different hybridized nucleic acid molecules have the same fluorescent label and are discriminated by different addressable array-specific portions.
21. The instrument of claim 11 , wherein each capture oligonucleotide on the solid support comprises 20-25mers.
22. The instrument of claim 11 , wherein each type of capture oligonucleotide differs in nucleotide sequence, when aligned to any other type of capture oligonucleotide of the solid support, by at least 25%.