Patent EP0200057A2 successfully refreshed from Google Patents.
EP0200057A2
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EP
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Diagnostic reagent, kit and method employing polynucleotide displacement, separation, enzymatic cleavage and adenosine phosphate detection
Assignee: Honeywell International Inc
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Filing: 1986-04-11
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Granted: —
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Expires: 2006-04-11
Abstract
Abstract @ A reagent complex is disclosed containing (1) a probe polynucleotide having a target binding region complementary to a target nucleotide sequence and (2) a signal strand polynucleotide bound by base pairing to a portion of the target binding region. The signal strand is displaced from the reagent complex by the target nucleotide sequence and separated from intact reagent complexes. A digestable ribonucleotide segment of the displaced signal strand, such as a 3' terminal segment, is digested to ribonucleotide phosphates, which are phosphorylated to ATP. The ribonucleotide phosphates or ATP are detected.
Inventors
- 👤 Calvin Pardee Hull Vary
- 👤 Steven Elliot Diamond
- 👤 Neil M. Wolfman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 21:03
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/68; C12Q1/6813; C12Q1/6816; C12Q1/66; C12Q1/6823; Y; Y10; Y10S; Y10S435/00; Y10S435/81; Y10S436/00; Y10S436/807; Y10S436/808
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
134 words
A diagnostic kit for determining the presence of a predetermined target nucleotide sequence in the nucleic acid of a biological sample comprising: (a) a reagent complex comprising: (i) a probe polynucleotide containing a target binding region capable of complementary base pair binding to the target nucleotide sequence, and (ii) a signal strand polynucleotide bound by complementary base pairing to a portion of the target binding region, the signal strand polynucleotide containing a plurality of cleavable adenosine ribonucleotides; the target nucleotide sequence being capable of displacing the signal strand polynucleotide from the reagent complex; (b) separation means for separating displaced signal strand polynucleotides from reagent complexes; (c) enzymatic means for cleaving separated displaced signal strand polynucleotides and producing riboadenosine phosphate monomers; and (d) detecting means for detecting riboadenosine phosphate monomers produced by the enzymatic means.
Claim 2
Dependent Claim
134 words
A diagnostic kit for determining the presence of a predetermined target nucleotide sequence in the nucleic acid of a biological sample comprising: (a) a reagent complex comprising: (i) a probe polynucleotide containing a target binding region capable of complementary base pair binding to the target nucleotide sequence, and (ii) a signal strand polynucleotide bound by complementary base pairing to a portion of the target binding region, the signal strand polynucleotide containing a plurality of cleavable adenosine ribonucleotides; the target nucleotide sequence being capable of displacing the signal strand polynucleotide from the reagent complex; (b) separation means for separating displaced signal strand polynucleotides from reagent complexes; (c) enzymatic means for cleaving separated displaced signal strand polynucleotides and producing riboadenosine phosphate monomers; and (d) detecting means for detecting riboadenosine phosphate monomers produced by the enzymatic means.
Claim 3
Dependent Claim
36 words
The diagnostic kit of claim 1 wherein the signal strand contains a DNA segment bound by complementary base pairing to a portion of the target binding region and a single-stranded RNA portion adjacent the 3' terminus.
Claim 4
Dependent Claim
15 words
The diagnostic kit of claim 2 wherein the single-stranded RNA portion comprises a poly(riboadenosine) segment.
Claim 5
Dependent Claim
20 words
The diagnostic kit of claim 1 wherein the signal strand comprises a single-stranded poly(riboadensine) segment adjacent to the 3' terminus.
Claim 6
Dependent Claim
21 words
The diagnostic kit of claim 4 wherein the enzymatic means comprises an enzyme capable of cleaving monoribonucleotides from a single-stranded polyribonucleotide.
Claim 7
Dependent Claim
11 words
The diagnostic kit in claim 5 wherein the enzyme cleaves processively.
Claim 8
Dependent Claim
13 words
The diagnostic kit of claim 6 wherein the enzymatic means produces ribonucleoside diphosphates.
Claim 9
Dependent Claim
14 words
The diagnostic kit of claim 7 wherein the enzymatic means is a polynucleotide phosphorylase.
Claim 10
Dependent Claim
13 words
The diagnostic kit of claim 1 wherein the enzymatic means produces ribonucleoside monophosphates.
Claim 11
Dependent Claim
52 words
The diagnostic kit of any previous claim wherein the detecting means (d) comprises: (i) phosphorylation means for converting the adenosine phosphate produced by the enzymatic means (c) to adenosine triphosphate (ATP), and (ii) signal producing means for producing a detectable signal concurrently with an obligate hydrolysis of ATP to an adenosine phosphate.
Claim 12
Dependent Claim
28 words
The diagnostic kit of claim 10 wherein the phosphorylation means comprises an organophosphate and a phosphokinase capable of converting the organophosphate and ADP to ATP and a byproduct.
Claim 13
Dependent Claim
16 words
The diagnostic kit of claim 11 wherein the enzymatic means, organophosphate and phosphokinase are packaged together.
Claim 14
Independent Claim
190 words
A method for determining the presence of a predetermined DNA target nucleotide sequence in the nucleic acid of a biological sample which comprises the steps: (a) providing a reagent complex of (i) a probe polynucleotide which is capable of base pair binding via hydrogen bonds of purine/pyrimidine bases to the target nucleotide sequence, and (ii) a signal strand polynucleotide which is bound by base pair binding via hydrogen bonds of purine/pyrimidine base pairs to the probe polynucleotide in a region of the probe polynucleotide at least partially coextensive with the region in which the probe polynucleotide is capable of binding to the target nucleotide sequence, the signal strand polynucleotide containing cleavable riboadenosine iucleotides; (b) contacting the reagent complex with a sample under conditions in which the target nucleotide sequence, if present, binds to the probe polynucleotide and displaces signal strand polynucleotide from the complex; (c) separating a first phase containing displaced signal strand polynucleotide from a second phase containing reagent complexes; (d) digesting the displaced signal strand polynucleotides in the second phase to produce ribonucleoside phosphates including riboadenosine phosphates; and (e) detecting the riboadenosine phosphate monomers in the ribonucleoside phosphates.
Claim 15
Independent Claim
190 words
A method for determining the presence of a predetermined DNA target nucleotide sequence in the nucleic acid of a biological sample which comprises the steps: (a) providing a reagent complex of (i) a probe polynucleotide which is capable of base pair binding via hydrogen bonds of purine/pyrimidine bases to the target nucleotide sequence, and (ii) a signal strand polynucleotide which is bound by base pair binding via hydrogen bonds of purine/pyrimidine base pairs to the probe polynucleotide in a region of the probe polynucleotide at least partially coextensive with the region in which the probe polynucleotide is capable of binding to the target nucleotide sequence, the signal strand polynucleotide containing cleavable riboadenosine iucleotides; (b) contacting the reagent complex with a sample under conditions in which the target nucleotide sequence, if present, binds to the probe polynucleotide and displaces signal strand polynucleotide from the complex; (c) separating a first phase containing displaced signal strand polynucleotide from a second phase containing reagent complexes; (d) digesting the displaced signal strand polynucleotides in the second phase to produce ribonucleoside phosphates including riboadenosine phosphates; and (e) detecting the riboadenosine phosphate monomers in the ribonucleoside phosphates.
Claim 16
Dependent Claim
17 words
The method of claim 13 wherein the digesting step (d) produces nucleoside diphosphates including riboadenosine diphosphate (ADP).
Claim 17
Dependent Claim
22 words
The method of claim 14 wherein the digesting step (d) comprises contacting the first phase with a polynucleotide phosphorylase and inorganic phosphate.
Claim 18
Dependent Claim
22 words
The method of claim 15 wherein the detecting step (e) comprises: (i) phosphorylating the ADP to ATP, and (ii) detecting the ATP.
Claim 19
Dependent Claim
38 words
The method of claim 16 wherein the phosphorylating step (e)(i) and digesting step (d) are performed with the polynucleotide phosphorylase, inorganic phosphate, phosphorylating enzyme and organophosphate co-reactant present together, whereby the ADP as formed is converted to ATP.
Claim 20
Dependent Claim
22 words
The method of claim 16 or 17 wherein the ATP-detecting step (c) (ii) comprises reacting with luciferin in the presence of luciferase.
Claim 21
Dependent Claim
106 words
A reagent complex for determining the presence of a predetermined DNA target nucleotide sequence in the nucleic acid of a biological sample which comprises: (a) a probe polynucleotide which is capable of base pair binding via hydrogen bonds of purine/pyrimidine bases to the target nucleotide sequence, and (b) a signal strand polynucleotide which is bound by base pair binding via hydrogen bonds of purine/pyrimidine base pairs to the probe polynucleotide in a region of the probe polynucleotide at least partially coextensive with the region in which the probe polynucleotide is capable of binding to the target nucleotide sequence, the signal strand polynucleotide containing cleavable riboadenosine nucleotides.
Claim 22
Dependent Claim
106 words
A reagent complex for determining the presence of a predetermined DNA target nucleotide sequence in the nucleic acid of a biological sample which comprises: (a) a probe polynucleotide which is capable of base pair binding via hydrogen bonds of purine/pyrimidine bases to the target nucleotide sequence, and (b) a signal strand polynucleotide which is bound by base pair binding via hydrogen bonds of purine/pyrimidine base pairs to the probe polynucleotide in a region of the probe polynucleotide at least partially coextensive with the region in which the probe polynucleotide is capable of binding to the target nucleotide sequence, the signal strand polynucleotide containing cleavable riboadenosine nucleotides.
Claim 23
Dependent Claim
47 words
The reagent complex of claim 19 wherein the probe polynucleotide is DNA, the signal strand contains a DNA segment bound in the reagent complex by base pair binding to nucleotides of the probe polynucleotide and the signal strand contains at its 3' end a ribonucleotide segment. '
Claim 24
Dependent Claim
12 words
The reagent complex of claim 20 wherein the ribonucleotide segment is poly(riboadenosine).
Claim 25
Dependent Claim
32 words
A detectably labeled polynucleotide containing a pairing segment of DNA complementary to or homologous to a target nucleotide sequence to be detected and, at its 3' end, a ribonucleotide segment containing adenosines.
Claim 26
Dependent Claim
32 words
A detectably labeled polynucleotide containing a pairing segment of DNA complementary to or homologous to a target nucleotide sequence to be detected and, at its 3' end, a ribonucleotide segment containing adenosines.
Claim 27
Dependent Claim
13 words
The detectably labeled polynucleotide of claim 22 wherein the ribonucleotide segment is poly(riboadenasine).
References Cited (Backward Citations)
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