Patents by Inventor Alex Levitzki

Alex Levitzki 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: 20220339189
    Abstract: A method of treating cancer may include administering a polyplex of a double stranded RNA and a polymeric conjugate. The polymeric conjugate may consist of a linear polyethyleneimine covalently linked to one or more polyethylene glycol (PEG) moieties. Each PEG moiety may be conjugated via a linker to a targeting moiety capable of binding to a cancer antigen.
    Type: Application
    Filed: March 2, 2022
    Publication date: October 27, 2022
    Inventors: Alex Levitzki, Salim Joubran, Alexei Shir, Maya Zigler, Alaa Talhami, Yael Langut
  • Patent number: 11298376
    Abstract: A method of treating cancer can include administering a polyplex of a double stranded RNA and a polymeric conjugate. The polymeric conjugate can consist of a linear polyethyleneimine covalently linked to one or more polyethylene glycol (PEG) moieties. Each PEG moiety can be conjugated via a linker to a targeting moiety capable of binding to a cancer antigen.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: April 12, 2022
    Assignee: TARGIMMUNE THERAPEUTICS AG
    Inventors: Alex Levitzki, Salim Joubran, Alexei Shir, Maya Zigler, Alaa Talhami, Yael Langut
  • Patent number: 10543232
    Abstract: A polyplex of a double stranded RNA (dsRNA) and a polymeric conjugate consists of a linear polyethyleneimine (PEI) covalently linked to one or more polyethylene glycol (PEG) moieties. Each PEG moiety is conjugated via a linker to a targeting moiety capable of binding to a cancer antigen. Exemplary cancer antigens include epidermal growth factor receptor (EGFR), human epidermal growth factor receptor 2 (HER2) and prostate surface membrane antigen (PSMA).
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 28, 2020
    Assignee: TargImmune Therapeutics AG
    Inventors: Alex Levitzki, Salim Joubran, Alexei Shir, Maya Zigler, Alaa Talhami, Yael Langut
  • Publication number: 20190262395
    Abstract: A method of treating cancer can include administering a polyplex of a double stranded RNA and a polymeric conjugate. The polymeric conjugate can consist of a linear polyethyleneimine covalently linked to one or more polyethylene glycol (PEG) moieties. Each PEG moiety can be conjugated via a linker to a targeting moiety capable of binding to a cancer antigen.
    Type: Application
    Filed: March 7, 2019
    Publication date: August 29, 2019
    Inventors: Alex Levitzki, Salim Joubran, Alexei Shir, Maya Zigler, Alaa Talhami, Yael Langut
  • Publication number: 20190192563
    Abstract: A polyplex of a double stranded RNA (dsRNA) and a polymeric conjugate consists of a linear polyethyleneimine (PEI) covalently linked to one or more polyethylene glycol (PEG) moieties. Each PEG moiety is conjugated via a linker to a targeting moiety capable of binding to a cancer antigen. Exemplary cancer antigens include epidermal growth factor receptor (EGFR), human epidermal growth factor receptor 2 (HER2) and prostate surface membrane antigen (PSMA).
    Type: Application
    Filed: March 8, 2019
    Publication date: June 27, 2019
    Inventors: Alex Levitzki, Salim Joubran, Alexei Shir, Maya Zigler, Alaa Talhami, Yael Langut
  • Patent number: 10278991
    Abstract: A polyplex of a double stranded RNA and a polymeric conjugate is provided, wherein the polymeric conjugate consists of a linear polyethyleneimine covalently linked to one or more polyethylene glycol (PEG) moieties, each PEG moiety being conjugated via a linker to a targeting moiety capable of binding to a cancer antigen.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: May 7, 2019
    Assignee: TARGIMMUNE THERAPEUTICS AG
    Inventors: Alex Levitzki, Salim Joubran, Alexei Shir, Maya Zigler, Alaa Talhami, Yael Langut
  • Publication number: 20170072063
    Abstract: A polyplex of a double stranded RNA and a polymeric conjugate is provided, wherein the polymeric conjugate consists of a linear polyethyleneimine covalently linked to one or more polyethylene glycol (PEG) moieties, each PEG moiety being conjugated via a linker to a targeting moiety capable of binding to a cancer antigen.
    Type: Application
    Filed: May 14, 2015
    Publication date: March 16, 2017
    Inventors: Alex Levitzki, Salim Joubran, Alexei Shir, Maya Zigler, Alaa Talhami, Yael Langut
  • Patent number: 7964399
    Abstract: The present invention relates to the use of ligands for the FLK-1 receptor for the modulation of angiogenesis and vasculogenesis. The invention s based, in part, on the demonstration that Flk-1 tyrosine kinase receptor expression is associated with endothelial cells and the identification of vascular endothelial growth factor (VEGF) as the high affinity ligand of Flk-1. These results indicate a major role for Flk-1 in the signaling system during vasculogenesis and angiogenesis. Engineering of host cells that express Flk-1 and the uses of expressed Flk-1 to evaluate and screen for drugs and analogs of VEGF involved in Flk-1 modulation by either agonist or antagonist activities is described. The invention also relates to the use of FLK-1 ligands, including VEGF agonists and antagonists, in the treatment of disorders, including cancer, by modulating vasculogenesis and angiogenesis.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: June 21, 2011
    Assignees: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V., Yissum Research, Development Company of the Hebrew University of Jerusalem
    Inventors: Axel Ullrich, Werner Risau, Birgit Millauer, Aviv Gazit, Alex Levitzki
  • Publication number: 20050107321
    Abstract: The present invention relates to the use of ligands for the FLK-1 receptor for the modulation of angiogenesis and vasculogenesis. The invention is based, in part, on the demonstration that Flk-1 tyrosine kinase receptor expression is associated with endothelial cells and the identification of vascular endothelial growth factor (VEGF) as the high affinity ligand of Flk-1. These results indicate a major role for Flk-1 in the signaling system during vasculogenesis and angiogenesis. Engineering of host cells that express Flk-1 and the uses of expressed Flk-1 to evaluate and screen for drugs and analogs of VEGF involved in Flk-1 modulation by either agonist or antagonist activities is described. The invention also relates to the use of FLK-1 ligands, including VEGF agonists and antagonists, in the treatment of disorders, including cancer, by modulating vasculogenesis and angiogenesis.
    Type: Application
    Filed: March 15, 2004
    Publication date: May 19, 2005
    Inventors: Axel Ullrich, Werner Risau, Birgit Millauer, Aviv Gazit, Alex Levitzki
  • Patent number: 6872699
    Abstract: The present invention relates to the use of ligands for the FLK-1 receptor for the modulation of angiogenesis and vasculogenesis. The invention is based, in part, on the demonstration that Flk-1 tyrosine kinase receptor expression is associated with endothelial cells and the identification of vascular endothelial growth factor (VEGF) as the high affinity ligand of Flk-1. These results indicate a major role for Flk-1 in the signaling system during vasculogenesis and angiogenesis. Engineering of host cells that express Flk-1 and truncated Flk-1 and the uses of expressed Flk-1 to evaluate and screen for drugs and analogs of VEGF involved in Flk-1 modulation by either agonist or antagonist activities is described. The invention also relates to the use of FLK-1 ligands, including VEGF agonists and antagonists, in the treatment of disorders, including cancer, by modulating vasculogenesis and angiogenesis.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: March 29, 2005
    Assignee: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften, E.V.
    Inventors: Axel Ullrich, Werner Risau, Birgit Millauer, Aviv Gazit, Alex Levitzki
  • Publication number: 20020081650
    Abstract: The present invention relates to the use of ligands for the FLK-1 receptor for the modulation of angiogenesis and vasculogenesis. The invention is based, in part, on the demonstration that Flk-1 tyrosine kinase receptor expression is associated with endothelial cells and the identification of vascular endothelial growth factor (VEGF) as the high affinity ligand of Flk-1. These results indicate a major role for Flk-1 in the signaling system during vasculogenesis and angiogenesis. Engineering of host cells that express Flk-1 and the uses of expressed Flk-1 to evaluate and screen for drugs and analogs of VEGF involved in Flk-1 modulation by either agonist or antagonist activities is described.
    Type: Application
    Filed: January 23, 2001
    Publication date: June 27, 2002
    Inventors: Axel Ullrich, Werner Risau, Birgit Millauer, Aviv Gazit, Alex Levitzki
  • Patent number: 6331555
    Abstract: The present invention concerns compounds which can inhibit platelet derived growth factor receptor (PDGF-R) activity, preferably such compounds also inhibit the activity other members of the PDGF-R super family and are selective for members of the PDGF-R super family. The PDGF-R super family includes PDGF-R and PDGF-R related kinases Flt, and KDR. The featured compounds are active on cell cultures to reduce the activity of the PDGF-R and preferably one or more PDGF-R related kinases. An example of a featured compound, A10 (see FIG. 1a), and its ability to inhibit growth of tumor cells in vivo is described below. Using the present application as guide other compounds able to inhibit PDGF-R and preferably Flt and/or KDR can be obtained. Such compounds are preferably used to treat patients suffering from cell proliferative disorders characterized by inappropriate PDGF-R activity.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: December 18, 2001
    Assignees: University of California, Yissum Research Development Company of the Hebrew University of Jerusalem, Biosignal LTD, Sugen, Inc., Max-Planck-Gesellschaft zur Forderung der Wissenschaften E.V.
    Inventors: Klaus P. Hirth, Elaina Mann, Laura K. Shawyer, Axel Ullrich, Istvan Szekely, Tamas Bajor, Janis Haimichael, Laszlo Orfi, Alex Levitzki, Aviv Gazit, Peng Cho Tang, Reiner Lammers
  • Patent number: 5990141
    Abstract: The present invention concerns compounds which can inhibit platelet derived growth factor receptor (PDGF-R) activity, preferably such compounds also inhibit the activity other members of the PDGF-R super family and are selective for members of the PDGF-R super family. The PDGF-R super family includes PDGF-R and PDGF-R related kinases Flt, and KDR. The featured compounds are active on cell cultures to reduce the activity of the PDGF-R and preferably one or more PDGF-R related kinases. An example of a featured compound, A10 (see FIG. 1a), and its ability to inhibit growth of tumor cells in vivo is described below. Using the present application as guide other compounds able to inhibit PDGF-R and preferably Flt and/or KDR can be obtained. Such compounds are preferably used to treat patients suffering from cell proliferative disorders characterized by inappropriate PDGF-R activity.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: November 23, 1999
    Assignee: Sugen Inc.
    Inventors: Klaus Peter Hirth, Donna Pruess Schwartz, Elaina Mann, Laura Kay Shawver, Gyorgi Keri, Istvan Szekely, Tamas Bajor, Janis Haimichael, Laszlo Orfi, Alex Levitzki, Aviv Gazit, Axel Ullrich, Reiner Lammers, Fairooz F. Kabbinavar, Dennis Slamon, Peng Cho Tang
  • Patent number: 5851999
    Abstract: The present invention relates to the use of ligands for the FLK-1 receptor for the modulation of angiogenesis and vasculogenesis. The invention is based, in part, on the demonstration that Flk-1 tyrosine kinase receptor expression is associated with endothelial cells and the identification of vascular endothelial growth factor (VEGF) as the high affinity ligand of Flk-1. These results indicate a major role for Flk-1 in the signaling system during vasculogenesis and angiogenesis. Engineering of host cells that express Flk-1 and the uses of expressed Flk-1 to evaluate and screen for drugs and analogs of VEGF involved in Flk-1 modulation by either agonist or antagonist activities is described. The invention also relates to the use of FLK-1 ligands, including VEGF agonists and antagonists, in the treatment of disorders, including cancer, by modulating vasculogenesis and angiogenesis.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: December 22, 1998
    Assignees: Max-Planck-Gesellschaft zur Forderung der Wissenschaften ev., Yissum Research, Development Company of the Hebrew University of Jerusalem
    Inventors: Axel Ullrich, Werner Risau, Birgit Millauer, Aviv Gazit, Alex Levitzki
  • Patent number: 5700823
    Abstract: Method for treating a patient inflicted with a cell proliferation disorder, such as a cancer, characterized by inappropriate PDGF-R activity. The method involves the step of administering to the patient a therapeutically effective amount of a composition described in application.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: December 23, 1997
    Assignees: Sugen, Inc., Biosignal L.T.D., Yissum Research Development Company, Hebrew University of Jerusalem, Max-Planck-Gesellschaft zur Forderung der Wissenschaften E.V.
    Inventors: Klaus Peter Hirth, Donna Pruess Schwartz, Elaina Mann, Laura Kay Shawver, Gyorgy Keri, Istvan Szekely, Tamas Bajor, Janis Haimichael, Laszlo Orfi, Alex Levitzki, Aviv Gazit, Axel Ullrich, Reiner Lammers
  • Patent number: 5700822
    Abstract: The present invention concerns compounds which can inhibit platelet derived growth factor receptor (PDGF-R) activity, preferably such compounds also inhibit the activity other members of the PDGF-R super family and are selective for members of the PDGF-R super family. The PDGF-R super family includes PDGF-R and PDGF-R related kinases Flt, and KDR. The featured compounds are active on cell cultures to reduce the activity of the PDGF-R and preferably one or more PDGF-R related kinases. An example of a featured compound, A10 (see FIG. 1a), and its ability to inhibit growth of tumor cells in vivo is described below. Using the present application as guide other compounds able to inhibit PDGF-R and preferably Flt and/or KDR can be obtained. Such compounds are preferably used to treat patients suffering from cell proliferative disorders characterized by inappropriate PDGF-R activity.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: December 23, 1997
    Assignee: The Regents of the University of California
    Inventors: Klaus Peter Hirth, Donna Pruess Schwartz, Elaina Mann, Laura Kay Shawver, Gyorgi Keri, Istvan Szekely, Tamas Bajor, Janis Haimichael, Laszlo Orfi, Alex Levitzki, Aviv Gazit, Axel Ullrich, Reiner Lammers, Fairooz F. Kabbinavar, Dennis Slamon, Peng Cho Tang