Patent application number | Description | Published |
20080227143 | STABILIZED HEMATOXYLIN - A stabilized hematoxylin composition is disclosed that includes one or both of a host compound and an antioxidant. The disclosed composition exhibits sufficient stability to be utilized in an automated staining process without undue degradation prior to use of the composition to stain a biological sample. Methods of using and making the stabilized composition also are disclosed. | 09-18-2008 |
20080261266 | METHODS AND COMPOSITIONS FOR A MICROEMULSION-BASED TISSUE TREATMENT - The invention is directed to methods and compositions for deparaffinizing paraffin-embedded biological samples for subsequent tissue staining. The compositions are microemulsions that may include water/oil/surfactant microemulsions, and optionally a cosurfactant. The microemulsions enable deparaffinization without the use of xylene or toluene, and also enable solvent exchange without the use of intermediary alcohol dehydration or alcohol rehydration compositions. | 10-23-2008 |
20080268462 | Haptens, hapten conjugates, compositions thereof and method for their preparation and use - A method for performing a multiplexed diagnostic assay, such as for two or more different targets in a sample, is described. One embodiment comprised contacting the sample with two or more specific binding moieties that bind specifically to two or more different targets. The two or more specific binding moieties are conjugated to different haptens, and at least one of the haptens is an oxazole, a pyrazole, a thiazole, a nitroaryl compound other than dinitrophenyl, a benzofurazan, a triterpene, a urea, a thiourea, a rotenoid, a coumarin, a cyclolignan, a heterobiaryl, an azo aryl, or a benzodiazepine. The sample is contacted with two or more different anti-hapten antibodies that can be detected separately. The two or more different anti-hapten antibodies may be conjugated to different detectable labels. | 10-30-2008 |
20080274463 | Method for quantifying biomolecules conjugated to a nanoparticle - Disclosed embodiments concern quantifying a biomolecule conjugated to a nanoparticle. Quantifying typically comprises determining the number of biomolecules per nanoparticle. Any suitable biomolecule can be used, including but not limited to, amino acids, peptides, proteins, haptens, nucleic acids, oligonucleotides, DNA, RNA, and combinations thereof. A single type of biomolecule may be conjugated to the nanoparticle, more than one biomolecule of a particular class may be conjugated to the nanoparticle, or two or more classes of biomolecules may be conjugated to the nanoparticle. Certain disclosed embodiments comprise enzymatically or chemically digesting a biomolecule conjugated to the nanoparticle, or displacing a biomolecule using ligand-exchange chemistry. Where biomolecule concentrations are determined, any technique suitable for determining biomolecule concentration can be used, such as spectrophotometric techniques, including measuring tryptophan fluorescence and using a standard fluorescence intensity versus biomolecule concentration curve. | 11-06-2008 |
20080305497 | Polymeric carriers for immunohistochemistry and in situ hybridization - Certain disclosed embodiments of the present invention concern the synthesis, derivatization, conjugation to immunoglobulins and signal amplification based on discrete, relatively short polymers having plural reactive functional groups that react with plural molecules of interest. Reactive functional groups, such as hydrazides, may be derivatized with a variety of detectable labels, particularly haptens. The remaining reactive functional groups may be conjugated directly to a specific binding molecule, such as to the oxidized carbohydrate of the Fc region of the antibody. Disclosed conjugates display large signal amplification as compared to those based on molecules derivatized with single haptens, and are useful for assay methods, particularly multiplexed assays. | 12-11-2008 |
20090104654 | LOW VOLATILITY HIGH TEMPERATURE TISSUE CONDITIONING CROSS-REFERENCE TO RELATED APPLICATION - Solutions exhibiting little or no evaporative loss at elevated temperatures, i.e., in excess of 100° C., are employed in place of conventional aqueous-based antigen retrieval solutions. | 04-23-2009 |
20090170152 | Tissue Conditioning Protocols - Solutions exhibiting little or no evaporative loss at elevated temperatures, i.e., in excess of 100° C., are employed in place of conventional aqueous-based antigen retrieval solutions. | 07-02-2009 |
20090176253 | Antibody conjugates - Antibody/signal-generating moiety conjugates are disclosed that include an antibody covalently linked to a signal-generating moiety through a heterobifunctional polyalkyleneglycol linker. The disclosed conjugates show exceptional signal-generation in immunohistochemical and in situ hybridization assays on tissue sections and cytology samples. In one embodiment, enzyme-metallographic detection of nucleic acid sequences with hapten-labeled probes can be accomplished using the disclosed conjugates as a primary antibody without amplification. | 07-09-2009 |
20090181398 | Nanoparticle conjugates - Conjugate compositions are disclosed that include a specific-binding moiety covalently coupled to a nanoparticle through a heterobifunctional polyalkyleneglycol linker. In one embodiment, a conjugates is provided that includes a specific-binding moiety and a fluorescent nanoparticle coupled by a heterobifunctional PEG linker. Fluorescent conjugates according to the disclosure can provide exceptionally intense and stable signals for immunohistochemical and in situ hybridization assays on tissue sections and cytology samples, and enable multiplexing of such assays. | 07-16-2009 |
20100105566 | Enzyme-Catalyzed Metal Deposition for the Enhanced Detection of Analytes of Interest - The invention is directed to enhanced methods for detecting an analyte of interest in situ, by immunoassay, or by hybridization comprising binding an enzyme-labeled conjugate molecule to an analyte of interest in the presence of a redox-inactive reductive species and a soluble metal ion. The enzyme catalyzes the conversion of the inactive reductive species to an active reducing agent, which in turn reduces the metal ion to a metal atom thereby providing an enhanced means of detecting the analyte via metal deposition. | 04-29-2010 |
20100136652 | Molecular Conjugate - A method is disclosed for making a conjugate of two molecules using a hydrazide thiol linker. In a particular working embodiment, an Fc-specific antibody-enzyme conjugate is made using the method and demonstrated to provide exceptional staining sensitivity and specificity in immunohistochemical and in situ hybridization assays. | 06-03-2010 |
20100151489 | Method for quantifying biomolecules conjugated to a nanoparticle - Disclosed embodiments concern quantifying a biomolecule conjugated to a nanoparticle. Quantifying typically comprises determining the number of biomolecules per nanoparticle. Any suitable biomolecule can be used, including but not limited to, amino acids, peptides, proteins, haptens, nucleic acids, oligonucleotides, DNA, RNA, and combinations thereof. A single type of biomolecule may be conjugated to the nanoparticle, more than one biomolecule of a particular class may be conjugated to the nanoparticle, or two or more classes of biomolecules may be conjugated to the nanoparticle. Certain disclosed embodiments comprise enzymatically or chemically digesting a biomolecule conjugated to the nanoparticle, or displacing a biomolecule using ligand-exchange chemistry. Where biomolecule concentrations are determined, any technique suitable for determining biomolecule concentration can be used, such as spectrophotometric techniques, including measuring tryptophan fluorescence and using a standard fluorescence intensity versus biomolecule concentration curve. | 06-17-2010 |
20100184087 | Haptens, hapten conjugates, compositions thereof and method for their preparation and use - A method for performing a multiplexed diagnostic assay, such as for two or more different targets in a sample, is described. One embodiment comprised contacting the sample with two or more specific binding moieties that bind specifically to two or more different targets. The two or more specific binding moieties are conjugated to different haptens, and at least one of the haptens is an oxazole, a pyrazole, a thiazole, a nitroaryl compound other than dinitrophenyl, a benzofurazan, a triterpene, a urea, a thiourea, a rotenoid, a coumarin, a cyclolignan, a heterobiaryl, an azo aryl, or a benzodiazepine. The sample is contacted with two or more different anti-hapten antibodies that can be detected separately. The two or more different anti-hapten antibodies may be conjugated to different detectable labels. | 07-22-2010 |
20100297725 | Haptens, hapten conjugates, compositions thereof and method for their preparation and use - A method for performing a multiplexed diagnostic assay, such as for two or more different targets in a sample, is described. One embodiment comprised contacting the sample with two or more specific binding moieties that bind specifically to two or more different targets. The two or more specific binding moieties are conjugated to different haptens, and at least one of the haptens is an oxazole, a pyrazole, a thiazole, a nitroaryl compound other than dinitrophenyl, a benzofurazan, a triterpene, a urea, a thiourea, a rotenoid, a coumarin, a cyclolignan, a heterobiaryl, an azo aryl, or a benzodiazepine. The sample is contacted with two or more different anti-hapten antibodies that can be detected separately. The two or more different anti-hapten antibodies may be conjugated to different detectable labels. | 11-25-2010 |
20110136130 | METHOD FOR CHROMOGENIC DETECTION OF TWO OR MORE TARGET MOLECULES IN A SINGLE SAMPLE - The present invention provides a method and kit for detection of two or more target molecules in a single tissue sample, such as for gene and protein dual detection in a single tissue sample. Methods comprise treating a tissue sample with a first binding moiety that specifically binds a first target molecule. Methods further comprise treating the tissue sample with a solution containing a soluble electron-rich aromatic compound prior to or concomitantly with contacting the tissue sample with a hapten-labeled binding moiety and detecting a second target molecule. In one example, the first target molecule is a protein and the second is a nucleic acid sequence, the first target molecule being detected by immunohistochemistry and the second by in situ hybridization. The disclosed method reduces background due to non-specific binding of the hapten-labeled specific binding moiety to an insoluble electron rich compound deposited near the first target molecule. | 06-09-2011 |
20110244544 | Polymeric carriers for immunohistochemistry and in situ hybridization - Certain disclosed embodiments of the present invention concern the synthesis, derivatization, conjugation to immunoglobulins and signal amplification based on discrete, relatively short polymers having plural reactive functional groups that react with plural molecules of interest. Reactive functional groups, such as hydrazides, may be derivatized with a variety of detectable labels, particularly haptens. The remaining reactive functional groups may be conjugated directly to a specific binding molecule, such as to the oxidized carbohydrate of the Fc region of the antibody. Disclosed conjugates display large signal amplification as compared to those based on molecules derivatized with single haptens, and are useful for assay methods, particularly multiplexed assays. | 10-06-2011 |
20110244545 | Polymeric carriers for immunohistochemistry and in situ hybridization - Certain disclosed embodiments of the present invention concern the synthesis, derivatization, conjugation to immunoglobulins and signal amplification based on discrete, relatively short polymers having plural reactive functional groups that react with plural molecules of interest. Reactive functional groups, such as hydrazides, may be derivatized with a variety of detectable labels, particularly haptens. The remaining reactive functional groups may be conjugated directly to a specific binding molecule, such as to the oxidized carbohydrate of the Fc region of the antibody. Disclosed conjugates display large signal amplification as compared to those based on molecules derivatized with single haptens, and are useful for assay methods, particularly multiplexed assays. | 10-06-2011 |
20110245098 | Polymeric carriers for immunohistochemistry and in situ hybridization - Certain disclosed embodiments of the present invention concern the synthesis, derivatization, conjugation to immunoglobulins and signal amplification based on discrete, relatively short polymers having plural reactive functional groups that react with plural molecules of interest. Reactive functional groups, such as hydrazides, may be derivatized with a variety of detectable labels, particularly haptens. The remaining reactive functional groups may be conjugated directly to a specific binding molecule, such as to the oxidized carbohydrate of the Fc region of the antibody. Disclosed conjugates display large signal amplification as compared to those based on molecules derivatized with single haptens, and are useful for assay methods, particularly multiplexed assays. | 10-06-2011 |
20120276584 | STABILIZED HEMATOXYLIN - A stabilized hematoxylin composition is disclosed that includes one or both of a host compound and an antioxidant. The disclosed composition exhibits sufficient stability to be utilized in an automated staining process without undue degradation prior to use of the composition to stain a biological sample. Methods of using and making the stabilized composition also are disclosed. | 11-01-2012 |
20120283141 | ENZYME-CATALYZED METAL DEPOSITION FOR THE ENHANCED DETECTION OF ANALYTES OF INTEREST - The invention is directed to enhanced methods for detecting an analyte of interest in situ, by immunoassay, or by hybridization comprising binding an enzyme-labeled conjugate molecule to an analyte of interest in the presence of a redox-inactive reductive species and a soluble metal ion. The enzyme catalyzes the conversion of the inactive reductive species to an active reducing agent, which in turn reduces the metal ion to a metal atom thereby providing an enhanced means of detecting the analyte via metal deposition. | 11-08-2012 |
20130029376 | METHODS AND COMPOSITIONS FOR A MICROEMULSION-BASED TISSUE TREATMENT - The invention is directed to methods and compositions for deparaffinizing paraffin-embedded biological samples for subsequent tissue staining The compositions are microemulsions that may include water/oil/surfactant microemulsions, and optionally a cosurfactant. The microemulsions enable deparaffinization without the use of xylene or toluene, and also enable solvent exchange without the use of intermediary alcohol dehydration or alcohol rehydration compositions. | 01-31-2013 |
20130034854 | Antibody-Nanoparticle Conjugates and Methods for Making and Using Such Conjugates - Disclosed herein are antibody-nanoparticle conjugates that include two or more nanoparticles (such as gold, palladium, platinum, silver, copper, nickel, cobalt, iridium, or an alloy of two or more thereof) directly linked to an antibody or fragment thereof through a metal-thiol bond. Methods of making the antibody-nanoparticle conjugates disclosed herein include reacting an arylphosphine-nanoparticle composite with a reduced antibody to produce an antibody-nanoparticle conjugate. Also disclosed herein are methods for detecting a target molecule in a sample that include using an antibody-nanoparticle conjugate (such as the antibody-nanoparticle conjugates described herein) and kits for detecting target molecules utilizing the methods disclosed herein. | 02-07-2013 |
20130109019 | HAPTEN CONJUGATES FOR TARGET DETECTION | 05-02-2013 |
20130115593 | SUBSTRATES FOR CHROMOGENIC DETECTION AND METHODS OF USE IN DETECTION ASSAYS AND KITS - Embodiments of substrates and processes for chromogenic detection, and in particular pyrazolyl dihydrogen phosphate compounds, are disclosed. | 05-09-2013 |
20130122516 | DETECTING TARGETS USING MASS TAGS AND MASS SPECTROMETRY - Particular disclosed embodiments disclosed herein concern using a one or more various mass tags, which can be specifically deposited at targets through direct or indirect enzymatic-catalyzed transformation, to provide a method for identifying targets in tissue samples. The mass tags may be labeled with stable isotopes to produce mass tags having the same chemical structure but different masses. Mass codes produced by ionizing the mass tags are detected and/or quantified using mass spectrometry. The method can be used for multiplexed detection of multiple targets in a particular sample. In some embodiments, a map divided into sections representing sections of the tissue sample may be prepared, with the map sections including data corresponding to quantification data wherein the size of a mass peak is determined and correlated with the amount of a target for the corresponding tissue sample section. | 05-16-2013 |
20130189680 | POLYMER STABILIZATION OF CHROMOGEN SOLUTIONS - Disclosed embodiments concern a composition comprising DAB chromogen, and/or derivative thereof, a stabilizer, and polymer capable of preventing or reducing DAB precipitation relative to a composition that does not comprise the polymer. Also disclosed herein is a method for using the disclosed composition and embodiments of a kit. | 07-25-2013 |
20130273565 | POLYMERIC CARRIERS FOR IMMUNOHISTOCHEMISTRY AND IN SITU HYBRIDIZATION - Certain disclosed embodiments of the present invention concern the synthesis, derivatization, conjugation to immunoglobulins and signal amplification based on discrete, relatively short polymers having plural reactive functional groups that react with plural molecules of interest. Reactive functional groups, such as hydrazides, may be derivatized with a variety of detectable labels, particularly haptens. The remaining reactive functional groups may be conjugated directly to a specific binding molecule, such as to the oxidized carbohydrate of the Fc region of the antibody. Disclosed conjugates display large signal amplification as compared to those based on molecules derivatized with single haptens, and are useful for assay methods, particularly multiplexed assays. | 10-17-2013 |
20130309718 | METHODS AND COMPOSITIONS FOR A MICROEMULSION-BASED TISSUE TREATMENT - The invention is directed to methods and compositions for deparaffinizing paraffin-embedded biological samples for subsequent tissue staining. The compositions are microemulsions that may include water/oil/surfactant microemulsions, and optionally a cosurfactant. The microemulsions enable deparaffinization without the use of xylene or toluene, and also enable solvent exchange without the use of intermediary alcohol dehydration or alcohol rehydration compositions. | 11-21-2013 |
20140147906 | ANTIBODY CONJUGATES - Antibody/signal-generating moiety conjugates are disclosed that include an antibody covalently linked to a signal-generating moiety through a heterobifunctional polyalkyleneglycol linker. The disclosed conjugates show exceptional signal-generation in immunohistochemical and in situ hybridization assays on tissue sections and cytology samples. In one embodiment, enzyme-metallographic detection of nucleic acid sequences with hapten-labeled probes can be accomplished using the disclosed conjugates as a primary antibody without amplification. | 05-29-2014 |
20140205995 | MOLECULAR CONJUGATE - A method is disclosed for making a conjugate of two molecules using a hydrazide thiol linker. In a particular working embodiment, an Fc-specific antibody-enzyme conjugate is made using the method and demonstrated to provide exceptional staining sensitivity and specificity in immunohistochemical and in situ hybridization assays. | 07-24-2014 |
20140243236 | POLYMERIC CARRIERS FOR IMMUNOHISTOCHEMISTRY AND IN SITU HYBRIDIZATION - Certain disclosed embodiments of the present invention concern the synthesis, derivatization, conjugation to immunoglobulins and signal amplification based on discrete, relatively short polymers having plural reactive functional groups that react with plural molecules of interest. Reactive functional groups, such as hydrazides, may be derivatized with a variety of detectable labels, particularly haptens. The remaining reactive functional groups may be conjugated directly to a specific binding molecule, such as to the oxidized carbohydrate of the Fc region of the antibody. Disclosed conjugates display large signal amplification as compared to those based on molecules derivatized with single haptens, and are useful for assay methods, particularly multiplexed assays. | 08-28-2014 |
20140323336 | HAPTENS, HAPTEN CONJUGATES, COMPOSITIONS THEREOF AND METHOD FOR THEIR PREPARATION AND USE - A method for performing a multiplexed diagnostic assay, such as for two or more different targets in a sample, is described. One embodiment comprised contacting the sample with two or more specific binding moieties that bind specifically to two or more different targets. The two or more specific binding moieties are conjugated to different haptens, and at least one of the haptens is an oxazole, a pyrazole, a thiazole, a nitroaryl compound other than dinitrophenyl, a benzofurazan, a triterpene, a urea, a thiourea, a rotenoid, a coumarin, a cyclolignan, a heterobiaryl, an azo aryl, or a benzodiazepine. The sample is contacted with two or more different anti-hapten antibodies that can be detected separately. The two or more different anti-hapten antibodies may be conjugated to different detectable labels. | 10-30-2014 |