Patents by Inventor Alfred Engel

Alfred Engel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230095167
    Abstract: The present invention relates to a method for assessing atrial fibrillation in a subject, said method comprising the steps of determining the amount of BMP10 in a sample from the subject, and comparing the amount of BMP10 to a reference amount, whereby atrial fibrillation is to be assessed. Moreover, the present invention relates to a method for diagnosing heart failure based on the determination of BMP 10 in a sample from a subject. Further, the present invention relates to a method for predicting the risk of a subject of hospitalization due to heart failure based on the determination of a BMP10-type peptide in a sample from a subject. The present invention further pertains to antibodies which bind to one or more BMP10-type peptides such as NT-proBMP10.
    Type: Application
    Filed: February 19, 2021
    Publication date: March 30, 2023
    Inventors: Alfred Engel, Michael Gerg, Ute Jucknischke, Johann Karl, Peter Kastner, Thomas Meier, Lars Hillringhaus, Ulrich Schotten, Vinzent Rolny, Ursula-Henrike Wienhues-Thelen, André Ziegler, Roberto Latini, Jennifer Marie Theresia Anna Meessen
  • Patent number: 11397187
    Abstract: The present disclosure describes a method for predicting the risk of a patient to suffer from acute kidney injury (AKI) during or after a surgical procedure or after administration of a contrast medium. The method is based on the determination of the level of the biomarker IGFBP7 (Insulin-like Growth Factor Binding Protein 7) in a body fluid sample obtained from the patient prior to the surgical procedure or prior to the administration of a contrast medium. Further, the present disclosure describes a method for predicting the risk of a patient to suffer from acute kidney injury (AKI) based on the determination of the amount of the biomarker IGFBP7 (Insulin-like Growth Factor Binding Protein 7) and Cystatin C in a body fluid sample obtained from the patient. The present disclosure further encompasses kits and devices adapted to carry out the methods of the disclosed methods.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: July 26, 2022
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Andrea Horsch, Birgit Klapperich, Dirk Block, Alfred Engel, Johann Karl, Rosemarie Kientsch-Engel, Ekaterina Manuilova, Christina Rabe, Sandra Rutz, Monika Soukupova, Ursula-Henrike Wienhues-Thelen, Peter Kastner, Edelgard Anna Kaiser
  • Patent number: 11136376
    Abstract: The disclosure describes a recombinant immunoglobulin heavy chain comprising a sortase conjugation loop, methods for conjugating and/or labeling such recombinant immunoglobulin heavy chains by use of the enzyme sortase and to the conjugates/labeled products obtained via the method.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: October 5, 2021
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Alfred Engel, Pavel Kubalec, Alfons Nichtl, Tobias Oelschlaegel, Rainer Schlecht
  • Publication number: 20210061924
    Abstract: The present invention relates to a novel monoclonal antibody that specifically binds to a conformation dependent epitope on human thymidine kinase 1 (hTK-1; SEQ ID NO:1), to methods for quantifying hTK-1 employing the antibody and to the use of the anti-hTK-1 antibody in quantifying hTK-1.
    Type: Application
    Filed: October 13, 2020
    Publication date: March 4, 2021
    Inventors: Hartmut Duefel, Alfred Engel, Frank Kroner, Thomas Meier, Sandra Rutz, Michael Schraeml, Gloria Tabares, Ulrike Kurtkaya, Boris Pinchuk, Christina Zimmermann
  • Publication number: 20210009660
    Abstract: The disclosure describes a recombinant immunoglobulin heavy chain comprising a sortase conjugation loop, methods for conjugating and/or labeling such recombinant immunoglobulin heavy chains by use of the enzyme sortase and to the conjugates/labeled products obtained via the method.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 14, 2021
    Applicant: Roche Diagnostics Operations, Inc.
    Inventors: Alfred Engel, Pavel Kubalec, Alfons Nichtl, Tobias Oelschlaegel, Rainer Schlecht
  • Publication number: 20190137523
    Abstract: The present invention relates to a method for measuring the level of VEGF-A in the presence of a VEGF-A antagonist, kits comprising means for detecting VEGF-A in the presence of a VEGF-A antagonist, compositions of matter comprising a first and a second antibody suitable for detecting the level of VEGF-A in the presence of a VEGF-A antagonist, as well as methods of detecting a complex comprising human VEGF-A and a non-human or chimeric protein.
    Type: Application
    Filed: January 10, 2019
    Publication date: May 9, 2019
    Applicant: Hoffmann-La Roche Inc.
    Inventors: Alfred Engel, Johann Karl, Christina Rabe, Michael Schraeml, Monika Soukupova, Peter Stegmueller, Norbert Wild
  • Publication number: 20180231570
    Abstract: The present disclosure describes a method for predicting the risk of a patient to suffer from acute kidney injury (AKI) during or after a surgical procedure or after administration of a contrast medium. The method is based on the determination of the level of the biomarker IGFBP7 (Insulin-like Growth Factor Binding Protein 7) in a body fluid sample obtained from the patient prior to the surgical procedure or prior to the administration of a contrast medium. Further, the present disclosure describes a method for predicting the risk of a patient to suffer from acute kidney injury (AKI) based on the determination of the amount of the biomarker IGFBP7 (Insulin-like Growth Factor Binding Protein 7) and Cystatin C in a body fluid sample obtained from the patient. The present disclosure further encompasses kits and devices adapted to carry out the methods of the disclosed methods.
    Type: Application
    Filed: April 2, 2018
    Publication date: August 16, 2018
    Applicant: Roche Diagnostics Operations, Inc.
    Inventors: Andrea Horsch, Birgit Klapperich, Dirk Block, Alfred Engel, Johann Karl, Rosemarie Kientsch-Engel, Ekaterina Manuilova, Christina Rabe, Sandra Rutz, Monika Soukupova, Ursula-Henrike Wienhues-Thelen, Peter Kastner, Edelgard Anna Kaiser
  • Patent number: 9809835
    Abstract: The present disclosure is directed to the use of certain glycosyltransferase variants having N-terminal truncation deletions. Contrary to previous findings certain truncations were found to exhibit sialidase enzymatic activity, particularly a variant of human sialyltransferase (hST6Gal-I) with a truncation deletion involving the first 89 N-terminal amino acids of the respective wild-type polypeptide. A fundamental finding documented in the present disclosure is that there exists a variant of this enzyme which is capable of catalyzing transfer of a glycosyl moiety as well as hydrolysis thereof. Thus, disclosed is a specific exemplary variant of mammalian glycosyltransferase, nucleic acids encoding the same, methods and means for recombinantly producing the variant of mammalian glycosyltransferase and use thereof, particularly for sialylating in a quantitatively controlled manner terminal acceptor groups of glycan moieties being part of glycoproteins such as immunoglobulins.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: November 7, 2017
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Alfred Engel, Michael Greif, Christine Jung, Sebastian Malik, Rainer Mueller, Harald Sobek, Bernhard Suppmann, Marco Thomann
  • Patent number: 9481902
    Abstract: The present disclosure is directed to the use of certain glycosyltransferase variants having N-terminal truncation deletions. It was found that the combination of two different truncation variants of human ?-galactoside-?-2,6-sialyltransferase I (hST6Gal-I) exhibited different specific sialyltransferase enzymatic activities. In one example, under conditions wherein the first variant ?89 hST6Gal-I catalyzed formation of bi-sialylated target molecules the second variant ?108 hST6Gal-I catalyzed formation of mono-sialylated target molecules. Thus, disclosed are variants of mammalian glycosyltransferase, nucleic acids encoding the same, methods and means for recombinantly producing the variants of mammalian glycosyltransferase and use thereof, particularly for sialylating in a quantitatively controlled manner terminal acceptor groups of glycan moieties being part of glycoproteins such as immunoglobulins.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: November 1, 2016
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Tibor Czabany, Alfred Engel, Michael Greif, Christine Jung, Christiane Luley, Sebastian Malik, Rainer Mueller, Bernd Nidetzky, Doris Ribitsch, Katharina Schmoelzer, Helmut Schwab, Harald Sobek, Bernhard Suppmann, Marco Thomann, Sabine Zitzenbacher
  • Publication number: 20160102333
    Abstract: The present disclosure is directed to the use of certain glycosyltransferase variants having N-terminal truncation deletions. It was found that the combination of two different truncation variants of human ?-galactoside-?-2,6-sialyltransferase I (hST6Gal-I) exhibited different specific sialyltransferase enzymatic activities. In one example, under conditions wherein the first variant ?89 hST6Gal-I catalyzed formation of bi-sialylated target molecules the second variant ?108 hST6Gal-I catalyzed formation of mono-sialylated target molecules. Thus, disclosed are variants of mammalian glycosyltransferase, nucleic acids encoding the same, methods and means for recombinantly producing the variants of mammalian glycosyltransferase and use thereof, particularly for sialylating in a quantitatively controlled manner terminal acceptor groups of glycan moieties being part of glycoproteins such as immunoglobulins.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 14, 2016
    Inventors: Tibor Czabany, Alfred Engel, Michael Greif, Christine Jung, Christiane Luley, Sebastian Malik, Rainer Mueller, Bernd Nidetzky, Doris Ribitsch, Katharina Schmoelzer, Helmut Schwab, Harald Sobek, Bernhard Suppmann, Marco Thomann, Sabine Zitzenbacher
  • Publication number: 20160102298
    Abstract: The present disclosure is directed to glycosyltransferase variants having N-terminal truncation deletions. Contrary to previous findings certain truncations comprising the conserved amino acid motif (“QVWxKDS”) were found to be compatible with glycosyltransferase enzymatic activity, particularly in a human sialyltransferase (hST6Gal-I). Thus, disclosed are variants of mammalian glycosyltransferase, nucleic acids encoding the same, methods and means for recombinantly producing the variants of mammalian glycosyltransferase and use thereof, particularly for sialylating terminal acceptor groups of glycan moieties being part of glycoproteins such as immunoglobulins.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 14, 2016
    Inventors: Tibor Czabany, Alfred Engel, Michael Greif, Christine Jung, Christiane Luley, Sebastian Malik, Rainer Mueller, Bernd Nidetzky, Doris Ribitsch, Katharina Schmoelzer, Helmut Schwab, Harald Sobek, Bernhard Suppmann, Marco Thomann, Sabine Zitzenbacher
  • Publication number: 20160076068
    Abstract: The present disclosure is directed to the use of certain glycosyltransferase variants having N-terminal truncation deletions. Contrary to previous findings certain truncations were found to exhibit sialidase enzymatic activity, particularly a variant of human sialyltransferase (hST6Gal-I) with a truncation deletion involving the first 89 N-terminal amino acids of the respective wild-type polypeptide. A fundamental finding documented in the present disclosure is that there exists a variant of this enzyme which is capable of catalyzing transfer of a glycosyl moiety as well as hydrolysis thereof. Thus, disclosed is a specific exemplary variant of mammalian glycosyltransferase, nucleic acids encoding the same, methods and means for recombinantly producing the variant of mammalian glycosyltransferase and use thereof, particularly for sialylating in a quantitatively controlled manner terminal acceptor groups of glycan moieties being part of glycoproteins such as immunoglobulins.
    Type: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Inventors: Alfred Engel, Michael Greif, Christine Jung, Sebastian Malik, Rainer Mueller, Harald Sobek, Bernhard Suppmann, Marco Thomann
  • Publication number: 20150355199
    Abstract: The present invention relates to an assay for specific detection of complement factor H-related protein 1 (CFHR1) in a sample from a subject, as well as kits and agents related thereto.
    Type: Application
    Filed: August 26, 2015
    Publication date: December 10, 2015
    Inventors: Alfred Engel, Andreas Gallusser, Johann Karl, Peter Kastner, Wolfgang Obermeier, Monika Soukupova
  • Patent number: 8551696
    Abstract: The invention relates to soluble rubella E1 antigens and variants of these antigens. The antigens contain amino acids 201 to 432 or 169 to 432 and are lacking amino acids 453 to 481 as well as at least the amino acids 143 to 164. They further contain a region spanning two disulfide-bridges. The invention also relates to a recombinant DNA molecule encoding the rubella E1 antigens, the expression of rubella E1 antigens as chaperone fusion proteins and their use in a method of detecting antibodies against rubella in a sample.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: October 8, 2013
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Christian Scholz, Ralf Bollhagen, Alfred Engel, Elke Faatz, Peter Schaarschmidt, Barbara Upmeier, Toralf Zarnt
  • Patent number: 8426167
    Abstract: The present invention relates to the cloning and expression of foreign protein or polypeptides in bacteria, such as Escherichia coli. In particular, this invention relates to expression tools comprising a FKBP-type peptidyl prolyl isomerase selected from the group consisting of FkpA, SlyD, and trigger factor; methods of recombinant protein expression, the recombinant polypeptides thus obtained, as well as to the use of such polypeptides.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: April 23, 2013
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Christian Scholz, Herbert Andres, Elke Faatz, Alfred Engel, Urban Schmitt, Ariuna Bazarsuren, Peter Schaarschmidt
  • Publication number: 20110059552
    Abstract: The invention relates to soluble rubella E1 antigens and variants of these antigens. The antigens contain amino acids 201 to 432 or 169 to 432 and are lacking amino acids 453 to 481 as well as at least the amino acids 143 to 164. They further contain a region spanning two disulfide-bridges. The invention also relates to a recombinant DNA molecule encoding the rubella E1 antigens, the expression of rubella E1 antigens as chaperone fusion proteins and their use in a method of detecting antibodies against rubella in a sample.
    Type: Application
    Filed: June 3, 2010
    Publication date: March 10, 2011
    Inventors: CHRISTIAN SCHOLZ, RALF BOLLHAGEN, ALFRED ENGEL, ELKE FAATZ, PETER SCHAARSCHMIDT, BARBARA UPMEIER, TORALF ZARNT
  • Patent number: 7604935
    Abstract: A soluble rubella E1 antigen variant is disclosed that comprises amino acids 334-409 of the native rubella E1 peptide, but lacks the C-terminal end and at least the transmembrane region and the anchor segment as well as at least the amino acids 143 to 164. Also described is a recombinant DNA molecule encoding the rubella E1 antigen variants which are recombinantly expressed as a chaperone fusion protein, refolded into a soluble and immunoreactive conformation, and further used for the serological detection of anti-rubella antibodies. In addition, also disclosed is a method for the detection, determination and quantification of anti-rubella antibodies of IgG and/or IgM subclass in a sample wherein the rubella E1 antigen is used as a capture reagent and/or binding partner for the antibodies.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: October 20, 2009
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Barbara Upmeier, Ralf Bollhagen, Alfred Engel, Elke Faatz, Peter Schaarschmidt, Christian Scholz, Toralf Zarnt
  • Publication number: 20090028893
    Abstract: The present invention relates to the cloning and expression of foreign protein or polypeptides in bacteria, such as Escherichia coli. In particular, this invention relates to expression tools comprising a FKBP-type peptidyl prolyl isomerase selected from the group consisting of FkpA, SlyD, and trigger factor; methods of recombinant protein expression, the recombinant polypeptides thus obtained, as well as to the use of such polypeptides.
    Type: Application
    Filed: April 13, 2007
    Publication date: January 29, 2009
    Inventors: Christian Scholz, Herbert Andres, Elke Faatz, Alfred Engel, Urban Schmitt, Ariuna Bazarsuren, Peter Schaarschmidt
  • Patent number: 7244819
    Abstract: The present invention relates to the cloning and expression of foreign protein or polypeptides in bacteria, such as Escherichia coli. In particular, this invention relates to expression tools comprising a FKBP-type peptidyl prolyl isomerase selected from the group consisting of FkpA, SlyD, and trigger factor; methods of recombinant protein expression, the recombinant polypeptides thus obtained, as well as to the use of such polypeptides.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: July 17, 2007
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Christian Scholz, Herbert Andres, Elke Faatz, Alfred Engel, Urban Schmitt, Ariuna Bazarsuren, Peter Schaarschmidt
  • Patent number: 7244575
    Abstract: The present invention relates to the diagnosis of HIV infections. It especially teaches the production of a soluble retroviral surface glycoprotein-(or transmembrane glycoprotein)-chaperone complex and the advantageous use of a chaperone-antigen complex especially in the detection of antibodies to HIV in immunoassays, preferably according to the double antigen bridge concept, or as an immunogen. The invention also discloses soluble complexes comprising a variant of HIV-1 gp41 or a variant of HIV-2 gp36, respectively, and a chaperone selected from the peptidyl-prolyl-isomerase class of chaperones. Variants comprising specific amino-acid substitutions in the N-helical domain of HIV-1 gp41 or of HIV-2 gp36, respectively, are also described.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: July 17, 2007
    Assignee: Roche Diagnostics Corporation
    Inventors: Christian Scholz, Herbert Andres, Elke Faatz, Alfred Engel, Dorothea Sizmann