Separation Of Immune Complex From Unbound Antigen Or Antibody Patents (Class 436/538)
  • Patent number: 10344234
    Abstract: A composition including poly-oxygenated metal hydroxide material that comprises a clathrate containing oxygen gas (O2) molecules and a fuel. The poly-oxygenated metal hydroxide material, such as OX66™ material, is added to a fuel, such as, but not limited to, fuels such as petrol, alcohol and diesel, which are combustible in engines to create significantly increased horsepower and torque. The OX66™ material is added to fuel in different ratios to generate improved performance. The different ratios are based on several factors including the type and design of the engine, the type of fuel, and environmental parameters.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: July 9, 2019
    Assignee: HEMOTEK, LLC
    Inventor: John W. Woodmansee, Jr.
  • Patent number: 10191071
    Abstract: Provided herein are instruments and cartridges for processing samples. The cartridges include fluidic circuits in which fluid movement can be regulated by diaphragm valves. In certain cartridges, deformable material providing a diaphragm contacts an interface in the instrument that actuates the diaphragm directly, without intervening actuation layer. Certain cartridges have a plurality of fluidic circuits and fluid distribution channels or pneumatic distribution channels configured to deliver fluids or pneumatic pressure to any of the fluidic circuits, selectively. Certain cartridges have compartments containing on-board reagents. Compartments can be closed by a film attached to a body the cartridge through a heat seal.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: January 29, 2019
    Assignee: IntegenX, Inc.
    Inventors: James Ogg, David Eberhart, William D. Nielsen, Helen Franklin, Stevan B. Jovanovich
  • Patent number: 10107798
    Abstract: Herein is described a method to rapidly screen a large chemical space for a compound that binds to a target protein through an iterative fragment assembly approach that can be performed at low reagent cost and without requiring purification of the assembled product. The method employs a library of test ligands each of which comprise a ‘bait’ molecule, which is known from prior art or prior screening to have some intrinsic affinity for the target protein, and a test moiety.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: October 23, 2018
    Assignee: SUNESIS PHARMACEUTICALS, INC.
    Inventors: Stig Hansen, Daniel Erlanson, Mark Cancilla
  • Patent number: 9206396
    Abstract: A method for quantifying infectious particles of a virus in a sample comprises providing a layer of host cells of the virus, contacting the layer of host cells with a preparation of the sample, and culturing the cells under conditions wherein the cells are submerged in a thin layer of liquid culture medium, and wherein the virus infects host cells and releases its progeny from said infected host cells, imposing a flow of the liquid medium, wherein the spread of the viral progeny to uninfected host cells is enhanced, culturing the cells under conditions to allow further virus infection and viral gene expression, wherein infected host cells develop an observable indication of viral gene expression, and determining the number of infected host cells, whereby the number of infectious particles of the virus in the sample is quantified. The method may be used for measuring viral growth rate or for screening for antiviral compounds. Also provided are microfluidic devices suitable for the inventive method.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: December 8, 2015
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: John Yin, Ying Shu
  • Patent number: 9028771
    Abstract: The invention provides a modified form of saturation assay, which is based on the measurement of a free or unbound labelled reagent fraction (such that there is an increase in signal in the presence of analyte) and employs trapping zones to concentrate said unbound or free labelled fraction to avoid loss of sensitivity. Preferably, the assay is a membrane assay.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: May 12, 2015
    Assignee: Platform Diagnostics Limited
    Inventors: Douglas Robert Evans, Gerald John Allen, Carolyn Jennifer Ruddell
  • Patent number: 8999729
    Abstract: A device for conducting an agglutination assay comprising several reaction vessels, each reaction vessel comprising an upper chamber having an opening for accepting reactants and/or a sample; and a lower chamber comprising an end in communication with the upper chamber for receiving fluids from the upper chamber, a closed end opposite to the end, and a matrix for separating agglutinates from non-agglutinates; wherein the device further comprises a rotating support able to rotate around an axis and holding pivotally the reaction vessels in a way to allow the reaction vessels to pivot about an axis essentially perpendicular to the rotation axis of the support when the latter is rotated, such that the fluids remain in the upper chamber when the support is not rotated, and can flow from the upper chamber to the lower chamber and into the matrix when the support is rotated.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: April 7, 2015
    Assignee: Symbion Medical Systems Sarl
    Inventors: Isabelle Delafosse, Fabrice Ummel, Antonio Yanez
  • Patent number: 8962346
    Abstract: Embodiments of the present invention are directed toward devices, systems, and method for conducting assays using sedimentation. In one example, a method includes layering a mixture on a density medium, subjecting sedimentation particles in the mixture to sedimentation forces to cause the sedimentation particles to move to a detection area through a density medium, and detecting a target analyte in a detection region of the sedimentation channel. In some examples, the sedimentation particles and labeling agent may have like charges to reduce non-specific binding of labeling agent and sedimentation particles. In some examples, the density medium is provided with a separation layer for stabilizing the assay during storage and operation. In some examples, the sedimentation channel may be provided with a generally flat sedimentation chamber for dispersing the particle pellet over a larger surface area.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: February 24, 2015
    Assignee: Sandia Corporation
    Inventors: Ulrich Y. Schaff, Chung-Yan Koh, Gregory J. Sommer
  • Patent number: 8940549
    Abstract: The present invention aims to provide an assay reagent and an assay for accurately measuring KL-6, in particular, an assay reagent and an assay for accurately measuring KL-6 in samples containing a rheumatoid factor and/or a nonspecific substance other than the rheumatoid factor. KL-6 in samples that contain a rheumatoid factor and/or a nonspecific substance other than the rheumatoid factor can be accurately measured using an immunoassay reagent comprising a solution at a pH of 4.0 to 5.5 containing a rheumatoid factor interference inhibitor and a solution of an insoluble carrier on which anti-KL-6 antibodies are immobilized.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: January 27, 2015
    Assignees: Sekisui Medical Co., Ltd., Eidia Co., Ltd.
    Inventors: Junichi Kondou, Mitsuaki Yamamoto, Chie Kaneko
  • Patent number: 8936933
    Abstract: A method of processing a sample may include introducing a sample into a vessel, the vessel having proximal and distal ends, the sample being introduced into the proximal end of the vessel; incubating the sample in the vessel with a substance capable of specific binding to a preselected component of the sample; propelling components of the incubated sample, other than the preselected component, toward the proximal end of the vessel by clamping the vessel distal to the incubated sample and compressing the vessel where the incubated sample is contained; propelling the preselected component toward a distal segment of the vessel by clamping the vessel proximal to the preselected component and compressing the vessel where the preselected component is contained; and mixing the preselected component with a reagent in the distal segment of the vessel.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: January 20, 2015
    Assignee: IQumm, Inc.
    Inventors: Shuqi Chen, Lingjun Chen
  • Patent number: 8927299
    Abstract: There is disclosed apparatus and a system for effecting testing on a sample, such as for medical testing. The apparatus includes a sample chip (30) provided with at least two chambers (48, 50) within which analyte and a sample to be tested can be located, one chamber being a mixing chamber (48) and the other a detection chamber (50), the latter being provided with a sensor or means to enable sensing of one or more parameters pertaining to the sample. A detector unit (70, 170) includes a slot (76) for holding a sample carrier (30), drive means (94) for moving parts of a sample from the mixing chamber (48) to the detection chamber (50), such as by electromagnetic force, sensing means (60) for sensing the one or more parameters, a diagnostic unit (84) for analyzing the sensed parameters and a display unit (72) for displaying the results of the test to a user. The test unit (70, 170) is preferably handheld, which the sample carrier (30) is preferably in the form of a disposable chip.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: January 6, 2015
    Assignee: The Secretary of State for Innovation, Universities and Skills of Her Majesty's Britannic Government
    Inventor: Robert Andrew Porter
  • Patent number: 8900816
    Abstract: Detection of human antibodies directed against the tumor-specific protein Epidermal Growth Factor Receptor variant Class III (EGFRvIII) provide information on tumor burden and vaccine response. The methods of the invention permit the specific identification of antibodies that are able to bind to EGFRvIII. The methods are useful in determining the presence of an EGFRvIII-expressing tumor and in detecting immune responses following immunization with EGFRvIII-derived peptide as part of a cancer immunotherapy regimen.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: December 2, 2014
    Assignee: Duke University
    Inventors: Robert J. Schmittling, Gary E. Archer, John H. Sampson, Darell D. Bigner
  • Patent number: 8895321
    Abstract: Device and method for detecting the presence of known or unknown toxic agents in a fluid sample. Targets in the sample are bound to releasable receptors immobilized in a reaction region of a micro- or nano-fluidic device. The receptors are selected based on their affinity for classes of known toxic agents. The receptors are freed and the bound and unbound receptors separated based on differential electrokinetic mobilities while they travel to a detection device.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: November 25, 2014
    Assignee: STC.UNM
    Inventors: Gabriel Lopez, Linnea Ista, Steven RJ Brueck, Aurelio Evangelista Lara, Mangesh Bore
  • Patent number: 8865420
    Abstract: The present invention provides an approach for the simultaneous determination of the activation states of a plurality of proteins in single cells. This approach permits the rapid detection of heterogeneity in a complex cell population based on activation states, and the identification of cellular subsets that exhibit correlated changes in activation within the cell population. Moreover, this approach allows the correlation of cellular activities or properties. In addition, the use of potentiators of cellular activation allows for characterization of such pathways and cell populations.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: October 21, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Omar D. Perez, Garry P. Nolan, Jonathan M. Irish
  • Patent number: 8841104
    Abstract: The invention generally relates to methods of using compositions that include sets of magnetic particles, members of each set being conjugated to an antibody specific for a pathogen, and magnets to isolate a pathogen from a body fluid sample.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: September 23, 2014
    Assignee: NanoMR, Inc.
    Inventors: Sergey A. Dryga, Victor C. Esch, Lisa-Jo Ann Clarizia, Eddie W. Adams, Thearith H. Ung, Ravil A. Sitdikov
  • Patent number: 8828741
    Abstract: The present invention relates to devices and methods for the detection of analytes. In particular, the invention relates to methods for the qualitative and/or quantitative detection of analytes, comprising a microarray on a substrate, onto which probe molecules are immobilized on array elements, said microarray being disposed on a first surface of the device; and a detection chamber formed between the first surface including the microarray disposed thereon and a second surface, wherein the distance between the microarray and the second surface is variable, and wherein the second surface has a displacement structure.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: September 9, 2014
    Assignee: Clondiag GmbH
    Inventors: Eugen Ermantraut, Ralf Bickel, Torsten Schulz, Thomas Ullrich
  • Patent number: 8828671
    Abstract: Whole cell, simultaneous target and drug-target assay using differentially labeled antibodies and flow cytometry. First antibody binds to total target and second antibody binds to the drug binding site of the target, thus drug binding will competitively inhibit the second antibody allowing for a competitive inhibition assay of drug-target binding. The assay allows for whole cell analysis and even analysis of mixed populations of cells, yet provides detailed kinetic assessment of drug activity.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: September 9, 2014
    Assignee: Laboratory Corporation of America Holdings
    Inventors: Norman B. Purvis, Gregory T. Stelzer
  • Patent number: 8802378
    Abstract: The invention relates to certain methods for the determination of an antigen content of a first antigen in a mixture comprising two or more antigens. The invention also relates to a potency test for an antigen in a combination vaccine. The method allows the determination of the antigen content in a mixture additionally comprising antibodies that are capable of binding with the antigen.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: August 12, 2014
    Assignees: Intervet Inc., Intervet International B.V.
    Inventors: Michelle Allen, Mark Garrett, Urs Peter Bruderer, Martinus Antonius Johannes Thijssen
  • Patent number: 8785210
    Abstract: Test kit for the detection of an analyte in an aqueous solution, including chromatographic test strips for a hapten-antihapten complex and first and second standardized vessels for receiving and positioning test strips, which include first and second hapten-coupled receptors against the analyte dried onto the interior wall for the formation of the hapten-antihapten complex, where a portion of the standardized vessels further include a known amount of analyte embedded in a glass-like layer of trehalose, which are dried onto the interior wall of the control vessel so that they dissolve during reaction of the sample with the hapten-coupled receptors. Through this standardization, analytes in unknown samples may be safely detected by immunochromatography within minutes through a hapten-antihapten complex.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: July 22, 2014
    Assignee: IfP Privates Institut fur Produktqualitat GmbH
    Inventor: Wolfgang Weber
  • Patent number: 8771971
    Abstract: The present invention provides simple and rapid methods for measuring the function of a desired subset of lymphocytes, for example, T cells, B cells or NK cells. In addition, the present invention provides an all-in-one kit that contains reagents which permit a rapid and reliable analysis of the functions of T cells, B cells and NK cells obtained directly from whole blood or cord blood.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: July 8, 2014
    Assignee: The Research Foundation of State University of New York
    Inventor: Allen J. Norin
  • Patent number: 8765391
    Abstract: A method and kit for assaying a cell sample for the presence of at least a threshold number of cells of a given type are disclosed. The kit includes an assay device having a sample chamber for receiving the cell sample and an elongate collection chamber containing a selected-density and/or viscosity medium and having along its length, a plurality of cell-collection regions, and particles which are capable of specific attachment to cells of the selected cell type, and which are effective, when attached to the cells, to increase the density or magnetic susceptibility of the cells. In operation, particle-bound cells and particles in the cell sample are drawn through the elongate collection chamber under the influence of a gravitational or selected centrifugal or magnetic-field force until the particle-bound cells and particles completely fill successive cell-collection regions in the collection chamber.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: July 1, 2014
    Assignee: Zyomyx, Inc.
    Inventors: Frank Zaugg, Renee Tobias, Silvia McManus-Munoz, Peter Kernen, Laurence Ruiz-Taylor, Peter Wagner
  • Patent number: 8758772
    Abstract: The invention provides compositions (e.g., peptide compositions) useful for the detection of antibodies that bind to Borrelia antigens. The peptide compositions comprise polypeptide sequences comprising variants in the IR6 domain of the Borrelia VlsE protein. The invention also provides devices, methods, and kits comprising such peptide compositions and useful for the detection of antibodies that bind to Borrelia antigens and the diagnosis of Lyme disease.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: June 24, 2014
    Assignee: Abaxis, Inc.
    Inventors: Rajesh K. Mehra, Kenneth P. Aron, Dennis M. Bleile, Jeremy Walker, Cristina Cuesico
  • Patent number: 8709792
    Abstract: A method and device for detecting analytes in a test sample. Embodiments include methods for quantitatively detecting analytes within a range of concentrations. In an embodiment the method includes a lateral flow test strip with multiple test areas for capturing a labeled receptor to provide a detectable signal.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: April 29, 2014
    Assignee: Charm Sciences, Inc.
    Inventors: Steven J. Saul, Mark E. Tess, Robert J. Markovsky
  • Patent number: 8691587
    Abstract: Disclosed is a method for assessing heart failure in vitro including the steps of measuring in a sample the concentration of the marker SFRP-3, of optionally measuring in the sample the concentration of one or more other marker(s) of heart failure, and of assessing heart failure by comparing the concentration determined in for SFRP-3 and the concentration(s) determined for the optionally one or more other marker to the concentration of this marker or these markers as established in a reference population. Also disclosed are the use of SFRP-3 as a marker protein in the assessment of heart failure, a marker combination comprising SFRP-3 and a kit for measuring SFRP-3.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: April 8, 2014
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Ursula-Henrike Wienhues-Thelen, Sara Arab, Dirk Block, Andrew Emili, Anthony Gramolini, Georg Hess, Hendrik Heudig, Peter Liu, David MacLennan
  • Patent number: 8663985
    Abstract: An anchoring/capturing system for selecting or analyzing a CHO cell according to a product secreted by the CHO cell is described. The anchoring/capturing system comprises a first antibody or a first antigen-binding fragment for anchoring to the extracellular surface of the CHO cell, and a second antibody or a second antigen-binding fragment for binding the secreted product. Uses and methods involving the anchoring/capturing system are provided.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: March 4, 2014
    Assignee: Miltenyi Biotec GmbH
    Inventors: Stefan Miltenyi, Susanne Hoher-Peters, Monika Winkels
  • Patent number: 8642355
    Abstract: A versatile drug testing device (a lateral flow diagnostic testing device) includes a flat transparent carrier with a top and a bottom with the carrier having a series of independent parallel grooves formed therein running from adjacent to the top to adjacent to the bottom of the carrier, each groove having a first opening and a second opening above the first opening therein adjacent to the bottom of the carrier, at least one drug test strip installed in one of said grooves with its absorbent pad contiguous to the openings and a cover layer attached to the carrier operable to sealing close each of said grooves whereby the bottom of the device can be immersed in a specimen of urine, body fluid, or other biological specimen to wet the pad of the at least one test strip though the ingress of the specimen though the associated openings and the test results on the test strip can be easily viewed through the transparent carrier.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: February 4, 2014
    Inventor: Jianfeng Chen
  • Patent number: 8563330
    Abstract: The invention provides a device and method for the rapid identification of patients suspected of having thalassemia. The invention provides a test strip for the aqueous detection of thalassemia related proteins in whole blood. The test strip includes antibodies specific to the gamma 4, (?4) protein and provides easy visual discrimination between a positive result and a negative result. The invention can be used in remote or clinical settings.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: October 22, 2013
    Assignee: National Science and Technology Development Agency
    Inventors: Watchara Kasinrerk, Chatchai Tayapiwatana, Thanusak Tatu, Suthat Fucharoen, Sawitree Chiampanichayakul
  • Patent number: 8546149
    Abstract: The invention relates to certain methods for the determination of an antigen content of a first antigen in a mixture comprising two or more antigens. The invention also relates to a potency test for an antigen in a combination vaccine. The method allows the determination of the antigen content in a mixture additionally comprising antibodies that are capable of binding with the antigen.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: October 1, 2013
    Assignees: Intervet Inc., Intervet International B.V.
    Inventors: Michelle Allen, Mark Garrett, Urs Peter Bruderer, Martinus Antonius Johannes Thijssen
  • Patent number: 8512959
    Abstract: A method or platform for monoclonal antibody based biomarker discovery is disclosed. The method according to the invention provides for the integration of analyte collection, hybridoma screening and nanovolume integrated mass spectrometry (NVIMS) to achieve a robust screening system that is capable, for example, of cutting 4-6 years off of the classical biomarker discovery and development process. The invention provides a platform for the rapid, high-throughput production, isolation and characterization of, e.g., disease specific biomarkers together with highly specific monoclonal antibodies. The method of the invention has a variety of applications such as, but not limited to, drug testing, biohazard applications, ecological applications, physiological applications and/or pathology screening applications. The method of the invention is also capable of being performed or used as or with a high-throughput screening process or system of the invention.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: August 20, 2013
    Assignee: Northwestern University
    Inventors: Laszlo Takacs, Andras Guttman, William S. Hancock, Barry L. Karger, Manuel Duval, Patrick Berna
  • Patent number: 8481334
    Abstract: The invention features a method of attaching a ligand that has a free carboxyl group to a solid support by adding an amino group to the ligand to form a ligand-amino derivative, converting the ligand amino derivative to a ligand sulfhydryl derivative, attaching the ligand sulfhydryl derivative to a protein to form a ligand-linker-protein conjugate, and applying the ligand-linker-protein conjugate to the solid support. The method is particularly useful for immobilizing small molecule ligands having a free carboxyl group, such as cloxicillin, to a lateral-flow test strip, in order to make a detection zone on the test strip that exhibits a clear signal and enhanced sensitivity.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 9, 2013
    Assignee: Charm Sciences, Inc.
    Inventor: Steven J. Saul
  • Patent number: 8470609
    Abstract: A versatile drug testing device (a lateral flow diagnostic testing device) includes a flat transparent carrier with a top and a bottom with the carrier having a series of independent parallel grooves formed therein running from adjacent to the top to adjacent to the bottom of the carrier, each groove having a first opening and a second opening above the first opening therein adjacent to the bottom of the carrier, at least one drug test strip installed in one of said grooves with its absorbent pad contiguous to the openings and a cover layer attached to the carrier operable to sealing close each of said grooves whereby the bottom of the device can be immersed in a specimen of “urine”, “body fluid” or “other biological specimen” to wet the pad of the at least one test strip though the ingress of the specimen though the associated openings and the test results on the test strip can be easily viewed through the transparent carrier.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: June 25, 2013
    Inventor: Jian Feng Chen
  • Patent number: 8455202
    Abstract: A multi-dimensional method for simultaneously analyzing multiple analytes within a sample solution, comprising adding affinity selectors to a sample solution containing analytes to be measured, the affinity selectors having an affinity for one or more of the analytes within the sample solution; allowing immune complexes to form between the affinity selectors and the analytes; partially or totally resolving the formed immune complexes from non-analyte substances within the sample solution; dissociating the resolved immune complexes; separating the analytes and the affinity selectors of the dissociated immune complexes from one another by capturing the analytes through a surface adsorption process; transferring the captured analytes to a detection means; and resolving the analytes with the detection means in accordance with their mass-to-charge ratios.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: June 4, 2013
    Assignee: Perfinity Biosciences, Inc.
    Inventors: Fred E. Regnier, Nicholas B. Herold, Kevin W. Meyer
  • Patent number: 8409877
    Abstract: An embodiment of the invention relates to a device for detecting an analyte in a sample. The device comprises a fluidic network and an integrated circuitry component. The fluidic network comprises a sample zone, a cleaning zone and a detection zone. The fluidic network contains a magnetic particle and/or a signal particle. A sample containing an analyte is introduced, and the analyte interacts with the magnetic particle and/or the signal particle through affinity agents. A microcoil array or a mechanically movable permanent magnet is functionally coupled to the fluidic network, which are activatable to generate a magnetic field within a portion of the fluidic network, and move the magnetic particle from the sample zone to the detection zone. A detection element is present which detects optical or electrical signals from the signal particle, thus indicating the presence of the analyte.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: April 2, 2013
    Assignee: Intel Corporation
    Inventors: David J. Liu, Kai Wu, Xing Su
  • Patent number: 8409818
    Abstract: The invention provides kits and methods for detecting or monitoring the number of cells in sample. The cell comprises a cell surface associated protein (CSAP) comprising a cytoplasmic (cytosolic) and an extracellular (ecto) domain. The kit comprises: (i) a chromatographic device; and (ii) a CSAP-binding agent. The method comprises: (i) optionally contacting the sample with an agent capable of lysing or permeabilizing CSAP bearing cells; (ii) contacting the sample with a CSAP-binding agent that binds to the cytoplasmic domain of the CSAP; and (iii) directly or indirectly evaluating the level or presence of bound CSAP in the sample.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: April 2, 2013
    Assignee: The Macfarlane Burnet Institute for Medical Research and Public Health Limited
    Inventors: David Andrew Anderson, Robyn Elizabeth Lloyd, Suzanne Mary Crowe, Mary Louise Garcia, Alan Lee Landay
  • Patent number: 8404456
    Abstract: The present invention provides compositions and methods for treating or preventing antibody mediated graft rejection and blood typing.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: March 26, 2013
    Assignee: AbSorber AB
    Inventors: Jan Holgersson, Jining Liu, Linda Lindberg, Per Grufman
  • Patent number: 8399208
    Abstract: The present invention is related to accurate detection methods for the measurement only of myeloperoxidase (MPO) levels or neutrophils, preferably equine neutrophils, in complex biological samples. The present invention is further related to ELISA and SIEFED assays for such detection. SIEFED detection sensitivity of active peroxidase activity was found to be enhanced by the addition of nitrite. Such MPO measurement finds its use in many applications such as the prediction, diagnosis and/or monitoring of pathologies correlated with neutrophil activation and/or destruction; the evaluation of drugs and/or immunomodulators; the assessment of immune responses, either natural and/or after treatment with immunomodulators and/or drugs; and the study of cells and their ability to fight microorganisms and/or to destroy them.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: March 19, 2013
    Assignee: Universite de Liege
    Inventors: Didier Serteyn, Ginette Dupont, Thierry Franck, Stéphane Kohnen
  • Patent number: 8389224
    Abstract: Whole cell, simultaneous target and drug-target assay using differentially labeled antibodies and flow cytometry. First antibody binds to total target and second antibody binds to the drug binding site of the target, thus drug binding will competitively inhibit the second antibody allowing for a competitive inhibition assay of drug-target binding. The assay allows for whole cell analysis and even analysis of mixed populations of cells, yet provides detailed kinetic assessment of drug activity.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: March 5, 2013
    Assignee: Laboratory Corporation of America Holdings
    Inventors: Norman B. Purvis, Gregory T. Stelzer
  • Patent number: 8361808
    Abstract: Methods, materials, apparatus and systems are described for performing capillary flow assay. In one aspect, a system includes a sample collection unit to collect a sample liquid and a sample testing and storing unit to interface with the sample collection unit to test and store the collected sample liquid. The sample testing and storing unit includes a sample inlet shaped to receive the collected sample from the sample collection unit, and a sample well positioned below the sample inlet to retain at least a portion of the sample liquid. The sample testing and storing unit includes a sample housing unit to store a remainder of the sample liquid not retained in the sample well, and an analyte testing unit housing shaped to receive an analyte detecting unit to test a presence of a target analyte in the sample liquid.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: January 29, 2013
    Assignee: Oranoxis, Inc.
    Inventor: Dequn Wang
  • Patent number: 8343526
    Abstract: Disclosed are methods for conducting assays of samples, such as whole blood, that may contain cells or other particulate matter. Also disclosed are systems, devices, equipment, kits and reagents for use in such methods. One advantage of certain disclosed methods and systems is the ability to rapidly measure the concentration of an analyte of interest in blood plasma from a whole blood sample without blood separation and hematocrit correction.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: January 1, 2013
    Assignee: Meso Scale Technologies, LLC
    Inventors: Mark A. Billadeau, Jeff D. Debad, Eli N. Glezer, Jonathan K. Leland, Charles A. Wijayawardhana
  • Patent number: 8334104
    Abstract: Methods and reagents are disclosed for pretreating a sample suspected of containing a hydrophobic drug for conducting an assay method for detecting the hydrophobic drug. A combination is provided in a medium that includes the sample, a releasing agent for releasing the hydrophobic drug and the metabolites from endogenous binding moieties, and a selective solubility agent that provides for substantially equal solubility of the hydrophobic drug and the metabolites in the medium. The selective solubility agent includes a water miscible, non-volatile organic solvent and is present in the medium in a concentration sufficient to provide for substantially equal solubility of the hydrophobic drug and the metabolites in the medium. The medium, which may further include a hemolytic agent, is incubated under conditions for releasing the hydrophobic drug and the metabolites from endogenous binding moieties. The pretreated sample may be subjected to an assay for determining the hydrophobic drug.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: December 18, 2012
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventors: Tie Q. Wei, Alan Craig, Amy Posey
  • Patent number: 8323987
    Abstract: Provided is a method for screening a plurality of compounds for an ability to bind to a heterodimer of EGFR and another ERBB family member. Also provided are compounds that bind to heterodimers of EGFR and another ERBB family member, and methods of using the identified compounds to suppress the growth of a tumor associated with EGFR heterodimer activity in a subject.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: December 4, 2012
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: David Threadgill, Daekee Lee
  • Patent number: 8309316
    Abstract: The present invention provides an approach for the simultaneous determination of the activation states of a plurality of proteins in single cells. This approach permits the rapid detection of heterogeneity in a complex cell population based on activation states, and the identification of cellular subsets that exhibit correlated changes in activation within the cell population. Moreover, this approach allows the correlation of cellular activities or properties. In addition, the use of potentiators of cellular activation allows for characterization of such pathways and cell populations.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: November 13, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Omar D. Perez, Garry P. Nolan, Jonathan M. Irish
  • Patent number: 8304203
    Abstract: A method and kit for assaying a cell sample for the presence of at least a threshold number of cells of a given type are disclosed. The kit includes an assay device having a sample chamber for receiving the cell sample and an elongate collection chamber containing a selected-density and/or viscosity medium and having along its length, a plurality of cell-collection regions, and particles which are capable of specific attachment to cells of the selected cell type, and which are effective, when attached to the cells, to increase the density or magnetic susceptibility of the cells. In operation, particle-bound cells and particles in the cell sample are drawn through the elongate collection chamber under the influence of a gravitational or selected centrifugal or magnetic-field force until the particle-bound cells and particles completely fill successive cell-collection regions in the collection chamber.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: November 6, 2012
    Assignee: Zyomyx, Inc.
    Inventors: Frank Zaugg, Renee Tobias, Silvia McManus-Munoz, Peter Kernen, Laurence Ruiz-Taylor, Peter Wagner
  • Patent number: 8273566
    Abstract: Disclosed are methods for conducting assays of samples, such as whole blood, that may contain cells or other particulate matter. Also disclosed are systems, devices, equipment, kits and reagents for use in such methods. One advantage of certain disclosed methods and systems is the ability to rapidly measure the concentration of an analyte of interest in blood plasma from a whole blood sample without blood separation and hematocrit correction.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: September 25, 2012
    Assignee: Meso Scale Technologies, LLC
    Inventors: Mark A. Billadeau, Jeff D. Debad, Eli N. Glezer, Jonathan K. Leland, Charles A. Wijayawardhana
  • Patent number: 8178058
    Abstract: In the present invention cells are placed in a multiwell plate and grown. When the assay is to be performed, one uses gravity to wash away any unbound ligands rather than vacuum or centrifugation. The cells are then examined to detect the bound ligand. To perform the washing step(s) the plate is placed into a carrier plate having open wells in register with the wells of the filter plate or one may use a wicking device or an underdrain attached to the bottom of the filter plate. Sufficient wash liquid is added to allow for filtration by the effect of gravity to occur. Cells are retained within the wells at a rate of 4 times that of other rapid methods.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: May 15, 2012
    Assignee: EMD Millipore Corporation
    Inventor: Jun Y. Park
  • Patent number: 8137987
    Abstract: Bodily fluid is analyzed for the presence of drugs of a selected panel of drugs in a simultaneous assay in which sample of the fluid is incubated with additional amounts of all drugs of the panel, antibodies specific to each of the drugs of the panel, and microparticles, the microparticles being divided into subsets, one subset for each drug in the panel and each subset distinguishable from the others. The incubation is performed in a liquid medium in which competitive binding occurs, the drugs in the sample competing with those added to the assay medium for binding to the antibodies. In one procedure, the added drugs are pre-coupled to the microparticles while the antibodies are not, and the incubation is followed by further incubating the microparticles with labeled ligands that have affinity for the antibodies.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: March 20, 2012
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: William F. Link, Renato B. del Rosario, Randy V. Sweet, David L. King
  • Patent number: 8124743
    Abstract: The present invention discloses a method of purifying bivalent antibodies or antibody fragments that are active at both Fab sites from a source of antibodies or antibody fragments using a non-chromatographic method that includes inducing the formation of cyclic immunoglobulin aggregates by addition of multivalent hapten to a salt solution of soluble antibodies or antibody fragments, wherein the multivalent hapten possesses a linker between the two haptens effective to prevent the binding of both haptens of the ligand to the same antibody or antibody fragment.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: February 28, 2012
    Assignee: President and Fellows of Harvard College
    Inventors: Vijay M. Krishnamurthy, Lara A. Estroff, Vincent Semetey, Samuel W. Thomas, George K. Kaufman, Zihni Basar Bilgicer, George M. Whitesides
  • Patent number: 8114612
    Abstract: Assay systems and specialized antibodies for the detection and quantitation of troponin I and troponin T in body fluids as an indicator of myocardial infarction are disclosed. Troponin I and T exist in various conformations and the ratios of monomeric troponin I and T and the binary and ternary complexes, as well as which form of troponin present in the blood, may be related to the metabolic state of the heart. Disclosed are systems to determine the presence of a troponin form or a group of troponin forms in whole blood, serum or plasma samples. Disclosed is a method for improving the recovery of troponin I or T from a surface used in immunoassays. Also disclosed are antibodies which recognize unbound troponin forms, the forms of troponin in binary complexes, the ternary complex of troponin I, T and C, and the conformations of troponin I having intramolecularly oxidized and reduced cysteines.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: February 14, 2012
    Assignee: Alere San Diego, Inc.
    Inventors: Kenneth F. Buechler, Paul H. McPherson
  • Patent number: 8058022
    Abstract: Disclosed are methods for detecting protein complexes of sigma factors and interacting proteins in a sample containing Mycobacterium tuberculosis. Such methods are useful for the diagnosis and/or monitoring of tuberculosis in a subject. Also disclosed are methods for screening compounds that affect the interaction of one or more sigma factors with one or more interacting proteins.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: November 15, 2011
    Assignee: Indian Institute of Science
    Inventor: Balsubramanian Gopal
  • Patent number: RE43979
    Abstract: The invention relates to a method for detecting specific target-cells in a simple and time saving way, using paramagnetic particles, antibodies recognizing the Fc portions of target-cell associating antibodies and target-cell associating antibodies directed to specific antigen determinants in the target-cell membranes. Incubation of the cell suspension with a mild detergent and/or second set of antibodies or antibody fragments, prelabeled or not with fluorescent agents, metallocolloids, radioisotopes, biotincomplexes or certain enzymes allowing visualization, with dramatically increase the specificity of the method. The method can further be used for isolation of the target-cells by magnetic field application and kit for performing the method according to the invention is described.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: February 5, 2013
    Assignee: Abbott Laboratories
    Inventors: Oystein Fodstad, Gunnar Kvalheim
  • Patent number: RE44031
    Abstract: A method for analyzing a biological sample by antibody profiling for identifying forensic samples or for detecting the presence of an analyte. In an embodiment of the invention, the analyte is a drug, such as marijuana, Cocaine (crystalline tropane alkaloid), methamphetamine, methyltestosterone, or mesterolone. The method comprises attaching antigens to a surface of a solid support in a preselected pattern to form an array wherein locations of the antigens are known; contacting the array with the biological sample such that a portion of antibodies in the sample reacts with and binds to the antigens in the array to form immune complexes; washing away antibodies that do form immune complexes; and detecting the immune complexes, to form an antibody profile. Forensic samples are identified by comparing a sample from an unknown source with a sample from a known source.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: February 26, 2013
    Assignee: Battelle Energy Alliance, LLC
    Inventors: William A. Apel, Vicki S. Thompson