US20020110846A1 - Amplified array analysis method and system - Google Patents
Amplified array analysis method and system Download PDFInfo
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- US20020110846A1 US20020110846A1 US10/123,713 US12371302A US2002110846A1 US 20020110846 A1 US20020110846 A1 US 20020110846A1 US 12371302 A US12371302 A US 12371302A US 2002110846 A1 US2002110846 A1 US 2002110846A1
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- specific binding
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54306—Solid-phase reaction mechanisms
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6813—Hybridisation assays
- C12Q1/6834—Enzymatic or biochemical coupling of nucleic acids to a solid phase
- C12Q1/6837—Enzymatic or biochemical coupling of nucleic acids to a solid phase using probe arrays or probe chips
Definitions
- This invention relates to analytical systems wherein arrays of at least one material such as oligonucleotides, DNA and/or RNA and/or fragments thereof, peptides, protein fragments, polypeptides, polysaccharides, cell fragments, cells and tissues is disposed on a support member and is contacted with a mixture which may or may not include a material which includes binding pair members which bind to at least one of the materials comprising the array.
- the invention relates to analytical systems of this type which further include an amplified reporter system that are not dependent on layering.
- a specific binding pair is a system wherein the two components share an affinity for each other so as to cause one of the components contained in a mixture of materials to bind to the other upon contact.
- Either or both components of a specific binding pair may be organic or inorganic.
- the receptor sites 18 may comprise chemically active sites, such as phenolic sites normally present on the support member 12 , or they may comprise a material separately added to the support, such as a proteinaceous material, a phenolic based material, or any other such compound capable of interacting with the activated conjugate, as will be described hereinbelow, or the support surface itself may be chemically reactive.
- N-(biotinoyl)-N′-(iodoacetyl) ethylenediamine 15 ⁇ l of 0.1 M N-(biotinoyl)-N′-(iodoacetyl) ethylenediamine (Molecular Probes, Eugene, Oreg.) in dimethylsulfoxide (Aldrich, Milwaukee, Wis.) is added per 100 ⁇ l lysate and incubated for 60 min. at ambient temperature. Reagents are removed by dialysis against PBS.
Abstract
The present invention concerns an array-based analytical system and method having an enhanced sensitivity which allows for simple and rapid analysis of relative unmodified samples which comprises an analytical system of the type having a plurality of different first members of a specific binding pair affixed in an array thereupon, a mixture including at least one second member of a specific binding pair capable of binding to one of the first members so as to form a specific binding pair which is affixed to the support member, and a reporter system that produces a detectable signal indicative of the presence of the specific binding pair on the support member and wherein the reporter system includes an amplified reporter system that is independent of layering.
Description
- This application is a continuation-in-part of U.S. application Ser. No. 09/430,429 filed Oct. 29, 1999, which claims priority of U.S. Provisional Application Serial No. 60/106,653 filed Nov. 2, 1998.
- This invention relates to analytical systems wherein arrays of at least one material such as oligonucleotides, DNA and/or RNA and/or fragments thereof, peptides, protein fragments, polypeptides, polysaccharides, cell fragments, cells and tissues is disposed on a support member and is contacted with a mixture which may or may not include a material which includes binding pair members which bind to at least one of the materials comprising the array. Most specifically, the invention relates to analytical systems of this type which further include an amplified reporter system that are not dependent on layering.
- Many analytical techniques and systems are based upon the ability of various materials to form a specific binding pair. As used herein, a specific binding pair is a system wherein the two components share an affinity for each other so as to cause one of the components contained in a mixture of materials to bind to the other upon contact. Either or both components of a specific binding pair may be organic or inorganic. Some examples of specific binding pairs are antibodies and antigens, nucleic materials such as DNA, RNA and fragments thereof, free nucleotides, metallic moieties and nucleic acids or proteins, metal ions-organic ligands, biotin and avidin, folic acid-folate binding protein, polysaccharides-polysaccharide binding protein, sulfhydryls and sulfhydryl reactive groups such as maleimides and haloacetyl derivatives, amines and amine reactive groups such as succinimidyl esters and isothiocyanates, etc.
- Typical assays based upon the formation of specific binding pairs include a reporter system which provides a detectable signal indicative of the formation of a specific binding pair. For example, one of the members of the pair can be provided with a label which can comprise a fluorescent material, a radioactive material, any other signaling moiety, or a material which is further reactive with another species to form a colored complex or some other such detectable reaction product. The reporter system in these types of assays is commonly referred to as a layered-type system wherein successive layers of reagents such as labeled antibodies or nucleic acid probes are applied one after another in successive manipulation to generate a detectable signal.
- Recently, a number of technologies have been developed which enable the production of very large arrays comprised of one or more differing materials such as oligonucleotides, DNA and/or RNA and/or fragments thereof, peptides, protein fragments, cell fragments, cells and tissues disposed upon a support body. The various members comprising the array are each capable of forming a unique, specific binding pair with their appropriate counterpart, and such arrays have great utility for rapidly screening mixtures for the presence or absence of a large number of materials. Techniques for the fabrication of such arrays will be found, for example, in U.S. Pat. Nos. 5,744,305; 5,489,678; 5,445,934; 5,405,783; 5,329,028; 5,143,854 and 4,419,444, the disclosures of which are incorporated herein by reference. The formation of specific binding pairs is detected in such arrays by utilizing conventional reporter technology, of the type described hereinabove.
- There is often a need to increase the sensitivity of such assays. For example, in many instances, species will be present in the mixture at very low concentrations; hence, the detectable signal produced thereby will be very weak. Target amplification techniques, such as polymerase chain reaction (PCR) amplification may be applied to a sample containing nucleic materials so as to increase the concentration of these materials. However, PCR reaction, can be time consuming and difficult to implement. Therefore, it will be appreciated that there is a need for an array-based analytical system and method having an enhanced sensitivity which does not require such complex sample preparation or manipulation. The enhanced sensitivity of an assay of this type would allow for rapid and simple analysis of relatively unmodified biological fluids, preparations and the like. As will be described in detail hereinbelow, the present invention incorporates an amplification system into an array-based analysis. The system of the present invention may be utilized for the analysis of materials such as oligonucleotides, DNA and/or RNA and/or fragments thereof, peptides, protein fragments, polysaccharides, cell fragments, cells and tissues.
- The present invention provides a method for enhancing the sensitivity of array-based analytical assay systems which comprises a support member having at least one different first member of a specific binding pair affixed in an array thereupon, a mixture which may include at least one second member of a specific binding pair capable of binding to one of the first members so as to form a specific binding pair which is affixed to the support member, and a reporter system that produces a detectable signal indicative of the presence or absence of the specific binding pair on the support member wherein the reporter system comprises an amplified reporter system that is independent of layering. A commercial reagent package capable of performing the sequence of analysis process steps is also disclosed.
- Other advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:
- FIG. 1 is a schematic illustration of a catalyzed reporter deposition system in accordance with the present invention;
- FIG. 2 is a schematic illustration of a further stage in the catalyzed reporter deposition system in accordance with the present invention;
- FIG. 3 is a further schematic illustration of a stage of the catalyzed reporter deposition system in accordance with the present invention;
- FIG. 4 is a further schematic illustration of a stage of the catalyzed reporter deposition system in accordance with the present invention;
- FIG. 5 is a further schematic illustration of a stage of the catalyzed reporter deposition system in accordance with the present invention;
- FIGS.6A-C are reproductions illustrating a comparison of direct and amplified array analysis wherein (A) illustrates the results for direct analysis using 100 μg total RNA, (B) illustrates the results obtained for direct analysis using 4 μg total RNA, and (C) illustrates the results for amplified analysis using 4 μg RNA;
- FIG. 7 is a prior art detection slide of mouse monoclonal antibody (top) and streptavidin; and
- FIG. 8 is an amplified detection slide of mouse monoclonal antibody (top) and streptavidin according to the present invention.
- In accord with the present invention, an array-based binding assay incorporates an amplified reporter system utilized for the analysis of various materials including oligonucleotides, DNA and/or RNA and/or fragments thereof, peptides, protein fragments, polysaccharides, cell fragments, cells and/or tissues. As used herein, an amplified reporter system means a system, in which the formation of one specific binding pair will give rise to a multitude of reporter species. This is in contrast to a nonamplified system such as a system wherein a fluorescently tagged antibody reacts with an appropriate antigen to form a specific binding pair which can include fluorescent tags or labels thereupon without generating any signal amplification from the formation of the specific binding pair.
- One particularly preferred group of amplified reporter systems comprises enzymatically amplified reporter systems with catalyzed reporter deposition (CARD) being one particularly preferred amplification system. CARD amplification is a novel method of signal amplification which is disclosed in U.S. Pat. Nos. 5,731,158; 5,583,001 and 5,196,306, the disclosures of which are incorporated herein by reference. The method uses an analyte dependent enzyme activation system (ADEAS) to catalyze the deposition of reporter or hapten groups (labels) onto the solid phase of an assay support. These enzymatically deposited labels are detected directly or indirectly, which results in signal amplification and improved detection limits.
- Operation of one catalyzed reporter deposition system is shown schematically in FIGS.1-5. FIG. 1 depicts a
support member 12 having an array of first members of a specific binding pair supported thereupon. As shown in FIG. 1, two members of thearray support member 12 may be polymeric or glass and may be in the form or shape of any solid or porous support, and it will include a number ofreceptor sites 18 thereupon. Thesereceptor sites 18 function to bind an activated, labeled conjugate, as will be described hereinbelow. Thereceptor sites 18 may comprise chemically active sites, such as phenolic sites normally present on thesupport member 12, or they may comprise a material separately added to the support, such as a proteinaceous material, a phenolic based material, or any other such compound capable of interacting with the activated conjugate, as will be described hereinbelow, or the support surface itself may be chemically reactive. - FIG. 2 depicts a further stage in the use of the analytical system. As shown therein, the array is contacted with a mixture which may include one or more second members or analytes of a specific binding pair, capable of binding to at least one of the immobilized first members on the
support 12. As specifically shown in FIG. 2, the mixture includes two differentsecond members 20, 22. As illustrated, thesecond member 20 has bound to the immobilizedfirst member 14 to form aspecific binding pair 24. The other second member 22 is not capable of binding to either of thefirst members support member 12. - Referring now to FIG. 3, there is shown a further step in the method. As shown therein, an
enzyme 26 is coupled to the specific bindingpair 24. While the Figures imply that theenzyme 26 is joined to the specificbinding pair 24 after the specific binding pair is formed, the methodology of the present invention does not require this sequence of events. In some instances, theenzyme 26 may be coupled to thesecond member 20 prior to the formation of the binding pair, while in other instances, theenzyme 26 may be coupled after formation of the specific binding pair. Coupling can be accomplished by specific or nonspecific binding reactions. In some particular instances, the enzyme itself will be the second member of the specific binding pair, in which case, formation of the specific binding pair will inherently incorporate the enzyme. In any instance, the net result of the foregoing is that anenzyme 26 will be immobilized upon thesupport member 12 only at those locations in the matrix at which a specific binding pair is formed. The enzyme, in one specific embodiment, comprises horseradish peroxidase (HRP), although other enzymes may be utilized in other embodiments of the invention. - Referring now to FIG. 4, there is shown a further stage in the operation of the analytical system of the present invention wherein the
support member 12 having the specificbinding pair 24 and associatedenzyme 26 immobilized thereupon, is contacted with a labeledconjugate 28. The labeledconjugate 28 includes a substrate (S) for theenzyme 26, and a label (L). The substrate is a material which is activatable by the enzyme so as to cause it to bind to thereceptor sites 18 on thesupport member 12. Thereceptor sites 18 may be reactive components of thesupport member 12 or may be added to thesupport member 12. The label can be any detectable label, such as a fluorescently detectable label, a hapten (e.g. biotin), a radioactive label, or a chemically reactive, color forming label, through redox, chemiluminescence or other mechanism, or any other signaling moiety. As will be seen from FIG. 4, theenzyme 26 creates an activatedconjugate 28′, and as seen in FIG. 5, this activated conjugate 28′ binds to thereceptor sites 18 in the region of the specificbinding pair 24. Theunactivated conjugate 28 is not capable of binding to thereceptor sites 18; hence, the label is displayed only proximate the specificbinding pair 24. As noted from FIG. 5, the formation of one specificbinding pair 24 catalyzes the deposition of a number of labeled conjugates, thereby providing an amplified reporter system. - A commercial reagent package according to the present invention contains a support derivatized as detailed herein, along with peroxidase, enzyme, coupling agent, and labeling agent reagents. Instructions are supplied to perform the inventive amplified detection as detailed herein.
- The methodology of the present invention may be implemented in accord with various array-based analyses of the type shown in the prior art including both layered and non-layered assays and incorporated hereinabove by reference. Specific chemistries for the catalysts, supports, substrates, labels and members of the specific binding pair will depend upon the exact nature and purpose of the assays, which, in view of the teaching presented herein and in the patents referred to herein, will be readily apparent to one of skill in the art.
- For direct detection, cyanine 5 labeled cDNA was prepared from 100 μg and 4 μg Jurkat total RNA using the MICROMAX Direct Reagent Kit (NEN Life Science Products, Boston, Mass.). The cyanine 5 labeled cDNA was hybridized to Practice Slides (MICROMAX Human cDNA Microarray System I, NEN Life Science Products, Boston, Mass.) according to MICROMAX Human cDNA System I-Direct (NEN Life Science Products, Boston, Mass.) kit directions.
- For amplified analysis, biotin labeled cDNA was prepared from 4 μg Jurkat total RNA using the MICROMAX Human cDNA Microarray System I kit reagents and protocols. Hybridization to Practice Slides and amplified detection using streptavidin-HRP and cyanine 5 tyramide were according to the MICROMAX Human cDNA Microarray System I kit directions.
- Slides were scanned on a GSI Lumonics ScanArray 5000 (Watertown, Mass.) scanner.
- The results for direct analysis using 100 μg total RNA are shown in FIG. 6A. FIG. 6B shows the results obtained for direct analysis using 4 μg total RNA. The results for amplified analysis using 4 μg total RNA is shown in FIG. 6C. The loss of signal going from 100 μg to 4 μg of total RNA for direct analysis indicates that there is insufficient material available for adequate analysis. A greater amounts of cells or tissue mass is required for the direct method. The signal for the inventive amplified analysis using 4 μg of total RNA is greater than that using 100 μg for direct analysis, allowing for much greater flexibility in analyzing small amounts of tissues or cells.
- Aminosilane slides (Erie Scientific, Portsmouth, N.H.) were spotted with a mouse monoclonal antibody and streptavidin. For spotting, serial two-fold dilutions were made of each protein starting at 100 μg/ml in phosphate buffered saline (PBS). Slides were washed in PBS containing 0.1% Tween 20 (Sigma, St. Louis, Mo.) and blocked for 30 minutes with PBS, 0.1
% Tween 20, 0.5% Bovine Serum Albumin (BSA, Sigma). The slides were then incubated for 30 minutes with Goat anti-Mouse Biotin (Sigma) diluted 1/100 in PBS, 0.1% Tween 20, 0.5% BSA and washed three times with PBS, 0.1% Tween 20. - For conventional detection, slides were incubated for 30 minutes with Streptavidin-Cy3 (Jackson ImmunoResearch, West Grove, Pa.) diluted 1:100 in PBS, 0.1
% Tween 20, 0.5% BSA and washed three times with PBS, 0.1% Tween 20. The slides were rinsed in water and air dried. - For inventive amplified detection, slides were incubated for 30 minutes with Streptavidin-HRP (PerkinElmer Life Sciences, Boston, Mass.) diluted {fraction (1/100)} in PBS, 0.1
% Tween 20, 0.5% BSA and washed three times with PBS, 0.1% Tween 20. The slides were then incubated for ten minutes with Biotinyl-Tyramide diluted {fraction (1/500)} in Amplification Diluent (ELAST Kit, PerkinElmer Life Sciences) containing 2.5 M NaCl, and washed three times with PBS, 0.1% Tween 20. Slides were incubated for 30 minutes with Streptavidin-Cy3 diluted 1:200 in PBS, 0.1% Tween 20, 0.5% BSA and washed three times with PBS, 0.1% Tween 20. The slides were rinsed in water and air dried. - Slides were scanned with a Packard (Downers Grove, Ill.) ScanArray 5000 scanner.
- The results for conventional direct analysis for a quadruplet dilution series of mouse monoclonal antibody (top) and streptavidin (bottom) visualized with anti-mouse IgG biotin and streptavidin Cy3 are shown in FIG. 7. The results of the inventive amplified detection for the same quadruplet dilution series as per FIG. 7 is shown in FIG. 8. Inventive detection is visualized with anti-mouse IgG biotin, streptavidin-HRP, biotinyl-tyramide and streptavidin Cy3. The inventive amplified detection is approximately 64 to 128 times more sensitive and approximately 32 times more sensitive for immobilized mouse monoclonal antibody and streptavidin, respectively, as compared to conventional direct detection.
- Aminosilane slides (Erie Scientific, Portsmouth, N.H.) are spotted with an array of antibodies targeted to yeast proteins. Each antibody is spotted at a predetermined optimal concentration in phosphate buffered saline (PBS). Slides are washed in PBS containing 0.1% Tween 20 (Sigma, St. Louis, Mo.) and blocked for 30 minutes with PBS, 0.1
% Tween 20, 0.5% Bovine Serum Albumin (BSA, Sigma). - Yeast cell lysate is prepared by incubating the cells in a sodium acetate buffer, pH 5.0, containing 15% CHAPS (Sigma), 8 M Urea (Sigma), 5 mM EDTA (Sigma) and 4 mM TCEP (Pierce, Rockford, Ill.). The pH is adjusted by adding 10 μl of 1 M BisTris-HCl buffer pH 6.5 per 100 μl lysate. To label the proteins with biotin, 15 μl of 0.1 M N-(biotinoyl)-N′-(iodoacetyl) ethylenediamine (Molecular Probes, Eugene, Oreg.) in dimethylsulfoxide (Aldrich, Milwaukee, Wis.) is added per 100 μl lysate and incubated for 60 min. at ambient temperature. Reagents are removed by dialysis against PBS.
- Alternately, yeast cell lysate is prepared by suspending the cells in sodium acetate buffer, pH 5.0. The cells are disrupted using glass beads and a Mini-BeadBeater (BioSpec Products, Bartlesville, Okla.) according to the manufacturer's directions. Cell debris is removed by centrifugation for 15 min. at 12000× g. The extracted proteins are reduced with 4 mM TCEP, and the pH is adjusted by adding 10 μl of 1 M BisTris-HCl buffer pH 6.5 per 100 μl lysate. To label the proteins with biotin, 15 μl of 0.1 M N-(biotinoyl)-N′-(iodoacetyl) ethylenediamine (Molecular Probes, Eugene, Oreg.) in dimethylsulfoxide (Aldrich, Milwaukee, Wis.) is added per 100 μl lysate and incubated for 60 min., and the lysate is dialyzed against PBS.
- The slides are incubated for 60 minutes with the labeled cell lysate and washed three times with PBS, 0.1
% Tween 20. - For standard detection, slides are incubated for thirty minutes with Streptavidin-Cy3 (Jackson ImmunoResearch, West Grove, Pa.) diluted 1:100 in PBS, 0.1
% Tween 20, 0.5% BSA and washed three times with PBS, 0.1% Tween 20. The slides are rinsed in water and air dried. - For amplified detection, slides are incubated for 60 minutes with Streptavidin-HRP (PerkinElmer Life Sciences, Boston, Mass.) diluted {fraction (1/100)} in PBS, 0.1
% Tween 20, 0.5% BSA and washed three times with PBS, 0.1% Tween 20. The slides are then incubated for ten minutes with Biotinyl-Tyramide diluted {fraction (1/500)} in Amplification Diluent (ELAST Kit, PerkinElmer Life Sciences) containing 2.5 M NaCl, and washed three times with PBS, 0.1% Tween 20. Slides are incubated for thirty minutes with Streptavidin-Cy3 diluted 1:200 in PBS, 0.1% Tween 20, 0.5% BSA and washed three times with PBS, 0.1% Tween 20. The slides are rinsed in water and air dried. - Slides are scanned with a Packard (Downers Grove, Ill.) ScanArray 5000 scanner. Results were comparable to those detailed with respect to Example 2.
- The foregoing drawings, discussion and description are illustrative of the general principles of the present invention, and some specific embodiments thereof, but are not meant to be limitations upon the practice of the present invention, since numerous modifications and variations will be readily apparent to one of skill in the art. It is the following claims, including all equivalents, which define the scope of the invention.
Claims (18)
1. An analytical system comprising:
a support member having a plurality of chemically active, phenolic or proteinaceous receptor sites thereupon;
an array of different first members of a specific binding pair disposed on said support, said first members being selected from the group consisting of: protein, peptide, polysaccharide, cell fragments, cells, tissue, organometallics, metal ion chelating organic ligands, and combinations thereof, said first members each being capable of binding to a complementary second member of said specific binding pair, whereby when said array is contacted with a plurality of analyte complementary second members, a plurality of specific binding pairs will be formed on said support;
a peroxidase enzyme;
a coupling agent operative to couple said enzyme to said specific binding pairs; and
a conjugate of a labeling agent and a substituted phenol substrate for said enzyme, said substrate being activatable by said enzyme so as to cause said substrate to bind to one of said chemically active receptor sites whereby said substrate and said labeling agent are immobilized upon said support.
2. An analytical system as in claim 1 , wherein said coupling agent is operative to couple said enzyme to the second member of said specific binding pair.
3. An analytical system as in claim 1 , wherein said peroxidase enzyme comprises horseradish peroxidase.
4. An analytical system as in claim 1 , wherein said substituted phenol substrate comprises tyramine.
5. An analytical system as in claim 1 , wherein said labeling agent comprises a fluorescent cyanine dye.
6. An analytical system as in claim 1 , wherein said more than one of said first members of said specific binding pair comprise protein.
7. An analytical system as in claim 1 , wherein said more than one of said first members of said specific binding pair comprise peptides.
8. An analytical system as in claim 1 , wherein said more than one of said first members of said specific binding pair comprise cells.
9. An analytical system as in claim 1 , wherein said more than one of said first members of said specific binding pair comprise cell fragments.
10. An analytical system as in claim 1 , wherein said more than one of said first members of said specific binding pair comprise tissues.
11. An analytical system as in claim 1 , wherein said more than one of said first members of said specific binding pair comprise organometallic.
12. An analytical system as in claim 1 , wherein said more than one of said first members of said specific binding pair comprise metal ion chelating organic ligand.
13. A commercial reagent package comprising a support member having a plurality of chemically active, phenolic or proteinaceous receptor sites thereon and an array of different first members of a specific binding pair disposed on said support, said first members being selected from the group consisting of: protein, peptide, polysaccharide, cell fragments, cells, tissue, organometallics, metal ion chelating organic ligands, DNA, cDNA, RNA, oligonucleotides and combinations thereof; a peroxidase enzyme; a coupling agent operative to couple said enzyme to said specific binding pairs; and a conjugate of a labeling agent and a substituted phenol substrate for said enzyme; and instructions for the use thereof as an analytical system for a second member capable of being bound to said first members to form said specific binding pairs.
14. An analytical process for detection comprising the steps of:
immobilizing a first member of a specific binding pair on a substrate member having a plurality of chemically active, phenolic or proteinaceous receptor sites thereupon;
contacting said substrate with a mixture comprising a second member of said specific binding pair;
coupling an enzyme to said second member of said binding pair to form a binding pair-enzyme species;
contacting said binding pair-enzyme species with a labeled conjugate, said conjugate comprising a substrate for said enzyme, and a label;
allowing sufficient time for said labeling conjugate to react with said enzyme to form an activated conjugate that binds said plurality of receptor sites; and
detecting said label bound to one of said plurality of receptor sites.
15. The process of claim 14 wherein said first member is selected from a group consisting of: DNA, cDNA, RNA, oligonucleotides, protein, peptides, polysaccharides, cell fragments, cells, tissue, organometallics and metal ion chelating organic ligands.
16. The process of claim 14 wherein said enzyme is a peroxidase.
17. The process of claim 14 wherein said label is fluorescent, haptenic, radioactive, chemically reactive or color-forming.
18. The process of claim 14 wherein said enzyme is coupled to said second member prior to formation of said specific binding pair.
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US11/741,548 US8153367B2 (en) | 1999-10-29 | 2007-04-27 | Amplified array analysis system |
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JP2004020433A (en) * | 2002-06-18 | 2004-01-22 | Canon Inc | Probe fixing base member for target material detection process |
WO2004111259A2 (en) * | 2003-06-12 | 2004-12-23 | Perkinelmer Las, Inc. | Hydrolytic substrates for an analyte-dependent enzyme activation system |
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- 1999-10-29 US US09/430,429 patent/US6399299B1/en not_active Expired - Lifetime
- 1999-11-01 WO PCT/US1999/025616 patent/WO2000026409A1/en not_active Application Discontinuation
- 1999-11-01 EP EP99971465A patent/EP1127166A4/en not_active Ceased
-
2002
- 2002-04-16 US US10/123,713 patent/US20020110846A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
EP1127166A1 (en) | 2001-08-29 |
WO2000026409A8 (en) | 2001-02-08 |
WO2000026409A9 (en) | 2001-09-27 |
WO2000026409A1 (en) | 2000-05-11 |
US6399299B1 (en) | 2002-06-04 |
EP1127166A4 (en) | 2004-07-28 |
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