Patents by Inventor Christian Kemmer

Christian Kemmer 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: 20240041845
    Abstract: The invention provides systems and methods for increased clinical efficacy of rifabutin against A. baumannii. The invention takes advantage of the discovery of a ferric-coprogen (FhuE) receptor that is responsible for the uptake of rifabutin into A. baumannii cells. Methods preferably include obtaining a sample from a patient suspected of having an infection; performing a test on the sample to identify an infection of A. baumannii in the patient; and providing a formulation of rifabutin for treating the patient that, when administered to the patient, maximizes a resultant AUC and/or Cmax. The method may include administering the formulation of rifabutin to the patient. Preferably the formulation is delivered to the patient, e.g., by intravenous injection and results in a Cmax is that greater than about 2 mg/L and optionally less than about 50 mg/L.
    Type: Application
    Filed: October 20, 2023
    Publication date: February 8, 2024
    Inventors: Glenn E. Dale, Sergio Lociuro, Christian Kemmer, Vincent Trebosc, Marc Gitzinger
  • Publication number: 20240000759
    Abstract: The invention provides antibiotic combination therapies for treating an A. baumannii infection in a subject. The combination therapies include rifabutin and a second antibiotic, such as colistin and cefiderocol.
    Type: Application
    Filed: September 12, 2023
    Publication date: January 4, 2024
    Inventors: Vincent Trebosc, Christian Kemmer, Glenn E. Dale, Sergio Lociuro, Marc Gitzinger
  • Patent number: 11833139
    Abstract: The invention provides systems and methods for increased clinical efficacy of rifabutin against A. baumannii. The invention takes advantage of the discovery of a ferric-coprogen (FhuE) receptor that is responsible for the uptake of rifabutin into A. baumannii cells. Methods preferably include obtaining a sample from a patient suspected of having an infection; performing a test on the sample to identify an infection of A. baumannii in the patient; and providing a formulation of rifabutin for treating the patient that, when administered to the patient, maximizes a resultant AUC and/or Cmax. The method may include administering the formulation of rifabutin to the patient. Preferably the formulation is delivered to the patient, e.g., by intravenous injection and results in a Cmax is that greater than about 2 mg/L and optionally less than about 50 mg/L.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: December 5, 2023
    Assignee: BIOVERSYS AG
    Inventors: Glenn E. Dale, Sergio Lociuro, Christian Kemmer, Vincent Trebosc, Marc Gitzinger
  • Patent number: 11766425
    Abstract: The invention provides antibiotic combination therapies for treating an A. baumannii infection in a subject. The combination therapies include rifabutin and a second antibiotic, such as colistin and cefiderocol.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: September 26, 2023
    Inventors: Vincent Trebosc, Christian Kemmer, Glenn E. Dale, Sergio Lociuro, Marc Gitzinger
  • Publication number: 20230132691
    Abstract: The invention provides systems and methods for increased clinical efficacy of rifabutin against A. baumannii. The invention takes advantage of the discovery of a ferric-coprogen (FhuE) receptor that is responsible for the uptake of rifabutin into A. baumannii cells. Methods preferably include obtaining a sample from a patient suspected of having an infection; performing a test on the sample to identify an infection of A. baumannii in the patient; and providing a formulation of rifabutin for treating the patient that, when administered to the patient, maximizes a resultant AUC and/or Cmax. The method may include administering the formulation of rifabutin to the patient. Preferably the formulation is delivered to the patient, e.g., by intravenous injection and results in a Cmax is that greater than about 2 mg/L and optionally less than about 50 mg/L.
    Type: Application
    Filed: June 6, 2022
    Publication date: May 4, 2023
    Inventors: Glenn E. Dale, Sergio Lociuro, Christian Kemmer, Vincent Trebosc, Marc Gitzinger
  • Publication number: 20220184048
    Abstract: The invention provides antibiotic combination therapies for treating an A. baumannii infection in a subject. The combination therapies include rifabutin and a second antibiotic, such as colistin and cefiderocol.
    Type: Application
    Filed: December 27, 2021
    Publication date: June 16, 2022
    Inventors: Vincent Trebosc, Christian Kemmer, Glenn E. Dale, Sergio Lociuro, Marc Gitzinger
  • Patent number: 11351158
    Abstract: The invention provides systems and methods for increased clinical efficacy of rifabutin against A. baumannii. The invention takes advantage of the discovery of a ferric-coprogen (FhuE) receptor that is responsible for the uptake of rifabutin into A. baumannii cells. Methods preferably include obtaining a sample from a patient suspected of having an infection; performing a test on the sample to identify an infection of A. baumannii in the patient; and providing a formulation of rifabutin for treating the patient that, when administered to the patient, maximizes a resultant AUC and/or Cmax. The method may include administering the formulation of rifabutin to the patient. Preferably the formulation is delivered to the patient, e.g., by intravenous injection and results in a Cmax is that greater than about 2 mg/L and optionally less than about 50 mg/L.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: June 7, 2022
    Assignee: BIOVERSYS AG
    Inventors: Glenn E. Dale, Sergio Lociuro, Christian Kemmer, Vincent Trebosc, Marc Gitzinger
  • Publication number: 20220024928
    Abstract: The present invention relates to a compound according to formula (I), wherein R1 and R5 are independently selected from H, halogen, hydroxyl, NO2, CN, C1-C6-alkyl optionally substituted by one or more R11, C1-C6-alkoxy optionally substituted by one or more R11, C3-C6-cycloalkyl optionally substituted by one or more R11, —Cn-alkyl-N(R12)(R13) with n=0-3, —Cn-alkyl-C(O)N(R12)(R13) with n=0-3, —SO2—N(R14)-C(O)—R15; —Cn-alkyl-N(R14)-C(O)—R15 with n=0-3, —Cn-alkyl-C(O)—OR16 with n=0-3, —O(C1-C3-alkyl-O)m—C1-C3-alkyl-OR10 with m=0-3, —Cn-alkyl-OR16 with n=0-3, —NH—Cn-alkyl-R18 with n=0-3; —O—Cn-alkyl-R18 with n=0-3; —OPO(OR10)2, —PO(OR10)2, and a heterocycle optionally substituted by one or more R17; R3 is selected from halogen, hydroxyl, NO2, CN, C1-C6-alkyl optionally substituted by one or more R11, C1-C6-alkoxy optionally substituted by one or more R11, C3-C6-cycloalkyl optionally substituted by one or more R11, —Cn-alkyl-N(R12)(R13) with n=0-3, —Cn-alkyl-C(O)N(R12)(R13) with n=0-3, —SO2—N(R14)-C(O)—R15; —Cn-alk
    Type: Application
    Filed: November 27, 2019
    Publication date: January 27, 2022
    Inventors: Marilyne BOUROTTE, Michel PIEREN, Sergio LOCIURO, Marc GITZINGER, Christian KEMMER, Birgit SCHELLHORN, Julian SCHILL, Peter SCHNEIDER
  • Patent number: 11207305
    Abstract: The invention provides antibiotic combination therapies for treating an A. baumannii infection in a subject. The combination therapies include rifabutin and a second antibiotic, such as colistin and cefiderocol.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: December 28, 2021
    Assignee: BIOVERSYS AG
    Inventors: Vincent Trebosc, Christian Kemmer, Glenn E. Dale, Sergio Lociuro, Marc Gitzinger
  • Publication number: 20210222181
    Abstract: The present invention relates to the field of bacterial vectors and methods for genetic manipulation of bacteria. In particular, the present invention relates to a vector for genetic manipulation of a bacterium, wherein said vector comprises (a) a non-antibiotic selection marker gene cassette, (b) an origin of replication, wherein said origin of replication is not capable of inducing replication of said vector in said bacterium, and (c) a restriction endonuclease gene, a recognition site of a restriction endonuclease encoded by said restriction endonuclease gene, and a second regulatory sequence. Further, the invention relates to a bacterial host cell comprising said vector, a method for genetic manipulation of bacteria using the vector of the invention, and methods for selecting bacterial host cells.
    Type: Application
    Filed: May 15, 2019
    Publication date: July 22, 2021
    Inventors: Christian KEMMER, Vincent TREBOSC, Michel PIEREN, Marc GITZINGER, Birgit SCHELLHORN
  • Publication number: 20210077471
    Abstract: The invention provides systems and methods for increased clinical efficacy of rifabutin against A. baumannii. The invention takes advantage of the discovery of a ferric-coprogen (FhuE) receptor that is responsible for the uptake of rifabutin into A. baumannii cells. Methods preferably include obtaining a sample from a patient suspected of having an infection; performing a test on the sample to identify an infection of A. baumannii in the patient; and providing a formulation of rifabutin for treating the patient that, when administered to the patient, maximizes a resultant AUC and/or Cmax. The method may include administering the formulation of rifabutin to the patient. Preferably the formulation is delivered to the patient, e.g., by intravenous injection and results in a Cmax is that greater than about 2 mg/L and optionally less than about 50 mg/L.
    Type: Application
    Filed: August 3, 2020
    Publication date: March 18, 2021
    Inventors: Glenn E. Dale, Sergio Lociuro, Christian Kemmer, Vincent Trebosc, Marc Gitzinger
  • Publication number: 20210077472
    Abstract: The invention provides antibiotic combination therapies for treating an A. baumannii infection in a subject. The combination therapies include rifabutin and a second antibiotic, such as colistin and cefiderocol.
    Type: Application
    Filed: August 3, 2020
    Publication date: March 18, 2021
    Inventors: Vincent Trebosc, Christian Kemmer, Glenn E. Dale, Sergio Lociuro, Marc Gitzinger
  • Publication number: 20140059709
    Abstract: The invention relates to vectors and mammalian cells in a system useful for switching on or switching off gene expression in response to uric acid. In a particular embodiment the invention relates to a mammalian cell useful in detecting and/or degrading a harmful excess of uric acid comprising (a) a vector comprising a genetic code for the uricase sensor-regulator HucR from Deinococcus radiodurans R1 fused to a transactivation domain or a transrepressor domain; and (b) a vector comprising the corresponding operator sequence hucO from Deinococcus radiodurans R1 specifically binding the bacterial uric acid sensor-regulator HucR, a promoter and a polynucleotide coding for an endogenous or exogenous protein, e.g. a protein interacting with uric acid.
    Type: Application
    Filed: October 3, 2013
    Publication date: February 27, 2014
    Applicant: ETH ZURICH
    Inventors: Christian KEMMER, Wilfried WEBER, Martin FUSSENEGGER
  • Patent number: 8506950
    Abstract: The invention relates to microcapsules consisting of a polymer degradable by a polypeptide comprising a drug or other compound of interest and a genetically engineered cell expressing said polypeptide in response to a triggering compound, and to methods of directed release of the compound of interest. The preferred polymer is optionally modified cellulose sulfate/poly-diallyl-dimethyl-ammonium chloride. Such microcapsules are non-toxic, do not elicit an immunological response and have an extended half-life time in mammals. The expression system for cellulase is, for example, based on TET and doxycycline, or E.REX and erythromycin. In another example, expression of cellulase is triggered by luteinizing hormone, which can be used for artificial insemination with microcapsules carrying sperm.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: August 13, 2013
    Assignees: ETH Zurich, Swissgenetics
    Inventors: Christian Kemmer, David Fluri, Ulrich Witschi, Wilfried Weber, Martin Fussenegger
  • Patent number: 8388945
    Abstract: The invention relates to microcapsules consisting of a polymer degradable by a polypeptide comprising a drug or other compound of interest and a genetically engineered cell expressing said polypeptide in response to a triggering compound, and to methods of directed release of the compound of interest. The preferred polymer is optionally modified cellulose sulfate/poly-diallyl-dimethyl-ammonium chloride. Such microcapsules are non-toxic, do not elicit an immunological response and have an extended half-life time in mammals. The expression system for cellulase is, for example, based on TET and doxycycline, or E.REX and erythromycin. In another example, expression of cellulase is triggered by luteinizing hormone, which can be used for artificial insemination with microcapsules carrying sperm.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: March 5, 2013
    Assignees: ETH Zurich, Swissgenetics
    Inventors: Christian Kemmer, David Fluri, Ulrich Witschi, Wilfried Weber, Martin Fussenegger
  • Publication number: 20130045190
    Abstract: The invention relates to microcapsules consisting of a polymer degradable by a polypeptide comprising a drug or other compound of interest and a genetically engineered cell expressing said polypeptide in response to a triggering compound, and to methods of directed release of the compound of interest. The preferred polymer is optionally modified cellulose sulfate/poly-diallyl-dimethyl-ammonium chloride. Such microcapsules are non-toxic, do not elicit an immunological response and have an extended half-life time in mammals. The expression system for cellulase is, for example, based on TET and doxycycline, or E.REX and erythromycin. In another example, expression of cellulase is triggered by luteinizing hormone, which can be used for artificial insemination with microcapsules carrying sperm.
    Type: Application
    Filed: September 6, 2012
    Publication date: February 21, 2013
    Inventors: Christian KEMMER, David Fluri, Ulrich Witschi, Wilfried Weber, Martin Fussenegger
  • Publication number: 20120066778
    Abstract: The invention relates to vectors and mammalian cells in a system useful for switching on or switching off gene expression in response to uric acid. In a particular embodiment the invention relates to a mammalian cell useful in detecting and/or degrading a harmful excess of uric acid comprising (a) a vector comprising a genetic code for the uricase sensor-regulator HucR from Deinococcus radiodurans R1 fused to a transactivation domain or a transrepressor domain; and (b) a vector comprising the corresponding operator sequence hucO from Deinococcus radiodurans R1 specifically binding the bacterial uric acid sensor-regulator HucR, a promoter and a polynucleotide coding for an endogenous or exogenous protein, e.g. a protein interacting with uric acid.
    Type: Application
    Filed: May 6, 2010
    Publication date: March 15, 2012
    Inventors: Christian Kemmer, Wilfried Weber, Martin Fussenegger
  • Publication number: 20110177162
    Abstract: The invention relates to microcapsules consisting of a polymer degradable by a polypeptide comprising a drug or other compound of interest and a genetically engineered cell expressing said polypeptide in response to a triggering compound, and to methods of directed release of the compound of interest. The preferred polymer is optionally modified cellulose sulfate/poly-diallyl-dimethyl-ammonium chloride. Such microcapsules are non-toxic, do not elicit an immunological response and have an extended half-life time in mammals. The expression system for cellulase is, for example, based on TET and doxycycline, or E.REX and erythromycin. In another example, expression of cellulase is triggered by luteinizing hormone, which can be used for artificial insemination with microcapsules carrying sperm.
    Type: Application
    Filed: July 10, 2009
    Publication date: July 21, 2011
    Inventors: Christian Kemmer, David Fluri, Ulrich Witschi, Wilfried Weber, Martin Fussenegger