Assay methods for nucleic acid in a sample
First Claim
Patent Images
1. A method for determining total nucleic acid in a sample, which comprises:
- a) mixing at least one random primer at least 4 nucleotides in length, having at least one detectable species with a sample which may contain nucleic acid, b) adding at least one nucleotide triphosphate having at least one binding species and optionally at least one second nucleotide triphosphate, c) adding at least one nucleic acid polymerase, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid polymerase to be active, e) contacting the mixture of step d) with at least one solid phase, f) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species bound to said solid phase, and g) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg.
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Abstract
The present invention relates to a method for the determination of the presence and amount of DNA in a sample. The method is based on the use of a nucleic acid template dependent enzyme in combination with a random primer to generate an enzymatic product which incorporates a binding species and a detectable species covalently linked.
21 Citations
62 Claims
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1. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one random primer at least 4 nucleotides in length, having at least one detectable species with a sample which may contain nucleic acid, b) adding at least one nucleotide triphosphate having at least one binding species and optionally at least one second nucleotide triphosphate, c) adding at least one nucleic acid polymerase, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid polymerase to be active, e) contacting the mixture of step d) with at least one solid phase, f) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species bound to said solid phase, and g) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 29, 37, 50)
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2. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one random primer at least 4 nucleotides in length, having at least one binding species with a sample which may contain nucleic acid b) adding at least one nucleotide triphosphate having at least one detectable species and optionally at least one second nucleotide triphosphate, c) adding at least one nucleic acid polymerase, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid polymerase to be active, e) contacting the mixture of step d) with at least one solid phase, f) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species bound to said solid phase, and g) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (38, 51)
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3. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one random primer at least 4 nucleotides in length with a sample which may contain nucleic acid, b) adding at least one nucleotide triphosphate having at least one binding species and optionally at least one nucleotide triphosphate having at least one detectable species and optionally at least one second nucleotide triphosphate, c) adding at least one nucleic acid polymerase, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid polymerase to be active, e) contacting the mixture of step d) with at least one solid phase, f) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species or the amount of said at least one binding species bound to said solid phase, and g) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (39, 52)
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4. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one first labeled random primer at least 4 nucleotides in length having at least one binding species and at least one second random primer at least 4 nucleotides in length having at least one detectable species, with a sample which may contain nucleic acid, b) adding at least one nucleic acid ligase, c) incubating the mixture of step b), under conditions which allow said at least one nucleic acid ligase to be active, d) contacting the mixture of step c) with at least one solid phase, e) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species or the amount of said at least one binding species bound to said solid phase, and f) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (13, 40, 53)
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5. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one first labeled random primer at least 4 nucleotides in length having at least one binding species and at least one second random primer at least 4 nucleotides in length having at least one detectable species, with a sample which may contain nucleic acid, b) adding at least one nucleic acid ligase and at least one nucleic acid polymerase, c) incubating the mixture of step b), under conditions which allow said at least one nucleic acid ligase and at least one nucleic acid polymerase to be active, d) contacting the mixture of step c) with at least one solid phase, c) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species or the amount of said at least one binding bound to said solid phase, and f) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (41, 54)
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23. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one random primer at least 4 nucleotides in length having at least one detectable species, with a sample which may contain nucleic acid, b) adding at least one nucleotide triphosphate having at least one binding species and optionally at least one second nucleotide triphosphate, c) adding at least one nucleic acid polymerase, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid polymerase to be active, e) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species or the amount of said at least one binding species, and f) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (28, 30, 31, 32, 42, 55)
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24. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one random primer at least 4 nucleotides in length, having at least one binding species, with a sample which may contain nucleic acid, b) adding at least one nucleotide triphosphate having at least one detectable species and optionally at least one second nucleotide triphosphate, c) adding at least one nucleic acid polymerase, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid polymerase to be active e) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species or the amount of said at least one binding species, and f) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (43, 56)
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25. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one random primer at least 4 nucleotides in length with a sample which may contain nucleic acid, b) adding at least one nucleotide triphosphate having at least one binding moiety and optionally at least one second nucleotide triphosphate having at least one label and optionally at least one nucleotide triphosphate, c) adding at least one nucleic acid polymerase, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid polymerase to be active, e) measuring total nucleic acid in said sample by measuring the total amount of said at least one label or the amount of said at least one binding moiety, and f) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (44, 57)
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26. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one labeled random primer at least 4 nucleotides in length having at least one binding species and optionally at least one second random primer at least 4 nucleotides in length having at least one detectable species, with a sample nucleic acid, b) adding at least one nucleic acid ligase, c) incubating the mixture of step b), under conditions which allow said at least one nucleic acid ligase to be active, d) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species or the amount of said at least one binding species, and e) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (33, 45, 58)
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27. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one labeled random primer at least 4 nucleotides in length having at least one binding species and optionally at least one second random primer at least 4 nucleotides in length having at least one detectable species, with a sample which may contain nucleic acid, b) adding at least one nucleic acid ligase and at least one nucleic acid polymerase, c) adding at least one nucleotide triphosphate, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid ligase and at least one nucleic acid polymerase to be active, e) measuring total nucleic acid in said sample by measuring the total amount of said at least one detectable species or the amount of said at least one binding species, and f) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (46, 59)
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34. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one random primer at least 4 nucleotides in length having at least one first label, with a sample nucleic acid, b) adding at least one nucleotide triphosphate having at least one second label and optionally at least one second nucleotide triphosphate, c) adding at least one nucleic acid polymerase, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid polymerase to be active, e) measuring total nucleic acid in said sample by measuring the total amount of said at least one first label or the amount of said at least one second label, and f) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (47, 60)
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35. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one labeled random primer at least 4 nucleotides in length having at least one first label species and optionally at least one second random primer at least 4 nucleotides in length having at least one second label, with a sample which may contain nucleic acid, b) adding at least one nucleic acid ligase, c) incubating the mixture of step b), under conditions which allow said at least one nucleic acid ligase to be active, d) measuring total nucleic acid in said sample by measuring the total amount of said at least one first label or the amount of said at least one second label, and e) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (48, 61)
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36. A method for determining total nucleic acid in a sample, which comprises:
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a) mixing at least one labeled random primer at least 4 nucleotides in length having at least one first label and optionally at least one second random primer at least 4 nucleotides in length having at least one second label, with a sample which may contain nucleic acid b) adding at least one nucleic acid ligase and at least one nucleic acid polymerase, c) adding at least one nucleotide triphosphate, d) incubating the mixture of step c), under conditions which allow said at least one nucleic acid ligase and at least one nucleic acid polymerase to be active, e) measuring total nucleic acid in said sample by measuring the total amount of said at least one first label or the amount of said at least one second label, and f) determining whether the total nucleic acid in said sample is higher or lower than a threshold amount of contamination, wherein the threshold amount of contamination is equal to or less than 100 pg. - View Dependent Claims (49, 62)
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Specification