Methods for testing oligonucleotide arrays
First Claim
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1. A quality control process for manufacturing nucleic acid probe arrays comprising manufacturing nucleic acid probe arrays by spatially directed nucleic acid synthesis in high volume and testing arrays selected from among the high volume manufactured.
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Abstract
Methods for testing oligonucleotide arrays are disclosed including methods for testing the efficiency of nucleotide coupling; methods for testing amounts of deprotected oligonucleotides; methods for determining amounts of depurinated oligonucleotides; and methods of detecting the presence of cleavable structural features, such as double-stranded nucleic acids.
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Citations
39 Claims
- 1. A quality control process for manufacturing nucleic acid probe arrays comprising manufacturing nucleic acid probe arrays by spatially directed nucleic acid synthesis in high volume and testing arrays selected from among the high volume manufactured.
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6. A testing method comprising:
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providing a substrate having a surface with linkers having active sites for nucleic acid synthesis;
synthesizing an ensemble of sequence-specific nucleic acids on the substrate by spatially directed nucleic acid synthesis;
exposing a first area of the substrate to a first test condition;
exposing a second area of the substrate to a second test condition; and
determining the relative amount of nucleic acids having a structural feature in the first and second area, wherein the structural feature is not monomer coupling and the test condition is not exposure to a nucleic acid probe having a sequence complementary to a sequence in the array;
whereby the relative amount indicates the relative efficiency to cause the appearance of the structural feature.- View Dependent Claims (7, 8, 9, 10, 11)
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12. A method for testing the efficiency of monomer coupling in the synthesis of a nucleic acid probe array by spatially directed nucleic acid synthesis comprising the steps of:
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providing a substrate having a surface having linkers with active sites;
coupling first protected monomers to active sites in a first area and at least one second area of the substrate and capping unreacted, unprotected active sites;
deprotecting active sites in the second area(s), coupling second protected monomers to active sites in the second area(s) and capping unreacted, unprotected active sites in the second area(s);
optionally repeating the previous step in at least one subsequent area of the substrate and capping unreacted, unprotected active sites in the subsequent area(s);
determining the amount of competent, uncapped active sites at at least two areas; and
comparing the amounts determined, wherein the comparative amount indicates the efficiency of monomer coupling between the two areas. - View Dependent Claims (13, 14, 15, 16)
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17. A method for testing the efficiency of monomer coupling in the synthesis of a nucleic acid probe array by spatially directed nucleic acid synthesis comprising the steps of:
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providing a substrate having a surface having cleavable linkers wherein the linkers comprise detectable labels releasable upon cleavage of the linkers and active sites for monomer coupling;
coupling at least one monomer to the active sites whereby the detectable labels are coupled to the monomer and capping unreacted, unprotected active sites after at least one coupling step;
cleaving the cleavable linkers to release detectably labelled nucleic acids;
determining the lengths of the released nucleic acids; and
comparing the amounts of nucleic acids having a first length and a second length, wherein the comparative amount indicates the efficiency of monomer coupling between the nucleic acids of the first length and the second length. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method for comparing the relative efficiency of two test conditions to cause deprotection of nucleic acids synthesized on a substrate by spatially directed nucleic acid synthesis comprising the steps of:
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providing a substrate on which an ensemble of sequence-specific nucleic acids has been synthesized, wherein the active sites on the free terminal nucleotides of the nucleic acids bear a protecting group;
exposing a first area of the substrate to a first test condition;
exposing a second area of the substrate to a second test condition; and
determining the amount of unprotected active sites in the first and second areas, whereby the relative amount indicates the relative efficiency. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A method of determining whether an ensemble of nucleic acids synthesized on a substrate by spatially directed nucleic acid synthesis contains double-stranded nucleic acids formed from the nucleic acids within themselves or between nucleic acids in the ensemble comprising:
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providing a substrate on which an ensemble of sequence-specific nucleic acids has been synthesized in an area of the substrate, wherein nucleic acids in the ensemble are attached to a detectable label that is released from the area upon cleavage of the nucleic acids;
contacting the ensemble with an agent that cleaves double-stranded nucleic acids, whereby cleavage of nucleic acids formed into double stranded nucleic acids releases detectable label from the area; and
determining the amount of detectable label remaining the area, whereby the amount of detectable label is inversely related to the amount of double-stranded nucleic acids. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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Specification