Patents by Inventor John C. Zwaagstra

John C. Zwaagstra 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: 20240101641
    Abstract: The present invention relates, in general, to polypeptides capable of binding and neutralizing transforming growth factor beta (TGF-?) ligands, and uses of these polypeptides for treating disorders related to TGF-beta expression or activation (e.g. cancer and fibrotic diseases), and methods of making such molecules.
    Type: Application
    Filed: August 29, 2023
    Publication date: March 28, 2024
    Applicant: National Research Council of Canada
    Inventors: Anne E.G. LENFERINK, John C. Zwaagstra, Traian Sulea, Maureen D. O'Connor-McCourt
  • Patent number: 11866481
    Abstract: The present invention relates, in general, to polypeptides capable of binding and neutralizing transforming growth factor beta (TGF-?) ligands, and uses of these polypeptides for treating disorders related to TGF-beta expression or activation (e.g. cancer and fibrotic diseases), and methods of making such molecules.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: January 9, 2024
    Assignee: National Research Council of Canada
    Inventors: Anne E. G. Lenferink, John C. Zwaagstra, Traian Sulea, Maureen D. O'Connor-McCourt
  • Publication number: 20220204587
    Abstract: The present invention relates, in general, to polypeptides capable of binding and neutralizing transforming growth factor beta (TGF-?) ligands, and uses of these polypeptides for treating disorders related to TGF-beta expression or activation (e.g. cancer and fibrotic diseases), and methods of making such molecules.
    Type: Application
    Filed: March 1, 2018
    Publication date: June 30, 2022
    Inventors: Anne E.G. LENFERINK, John C. ZWAAGSTRA, Traian SULEA, Maureen D. O'CONNOR-MCCOURT
  • Publication number: 20220169702
    Abstract: The present invention relates, in general, to polypeptides capable of binding and neutralizing transforming growth factor beta (TGF-beta) ligands, and uses of these polypeptides for treating disorders related to TGF-beta expression or activation (e.g. cancer and fibrotic diseases), and methods of making such molecules.
    Type: Application
    Filed: November 10, 2021
    Publication date: June 2, 2022
    Applicant: National Research Council of Canada
    Inventors: John C. Zwaagstra, Traian Sulea, Maria L. Jaramillo, Maureen D. O'Connor, Anne E.G. Lenferink
  • Publication number: 20220162337
    Abstract: The present invention is directed to anti-Her2 antibodies and fragments thereof, compositions, and uses thereof. The antibodies and fragments thereof bind to Her2-expressing cells in a pH-dependent manner, with low affinity at the physiological pH typical of normal cells and tissues, and with high affinity at the slightly acidic pH characteristic to solid tumors. Furthermore, the antibodies inhibit the growth of tumor spheroids at a level comparable to that of the benchmark anti-Her2 antibody Herceptin at acidic pH, whereas these effects were significantly reduced at physiological pH. This pH selectivity of cellular growth inhibition is maintained upon antibody conjugation to cytotoxic drugs. The invention also includes methods of treating solid tumors, methods of detecting solid tumors, and methods of pH-dependent capturing of the Her-2 ectodomain.
    Type: Application
    Filed: March 30, 2020
    Publication date: May 26, 2022
    Applicant: National Research Council of Canada
    Inventors: Traian Sulea, Jason Baardsnes, Christopher R. Corbeil, Maria L. Jaramillo, Enrico O. Purisima, John C. Zwaagstra, Nazanin Larijani Rohani
  • Publication number: 20200231652
    Abstract: The present invention relates, in general, to polypeptides capable of binding and neutralizing transforming growth factor beta (TGF-beta) ligands, and uses of these polypeptides for treating disorders related to TGF-beta expression or activation (e.g. cancer and fibrotic diseases), and methods of making such molecules.
    Type: Application
    Filed: August 31, 2016
    Publication date: July 23, 2020
    Applicant: National Research Council of Canada
    Inventors: John C. Zwaagstra, Traian Sulea, Maria Jaramillo, Maureen D. O'Connor, Anne E.G. Lenferink
  • Patent number: 8987417
    Abstract: The present invention addresses limitations of prior art receptor-based traps through a methodology called the clamp/click/cleave (CCC) approach. Two fusion proteins each comprising a binding domain fused to a coiled-coil are non-covalently dimerized through the coiled-coil (clamp), and the dimer so formed is stabilized by a covalent disulphide bond (click) between cysteine residues located on the fusion proteins between the binding domains and coiled-coils. Once the disulphide bond has formed, the coiled-coils are subsequently removed (cleave) by cleaving the fusions proteins at cleavage sites located between the cysteine residues and the coiled-coils to provide the covalently dimerized bivalent binding agent of the present invention. Such binding agents are useful in the treatment and diagnosis of disease states characterized by production and/or overexpression of a ligand to which the binding domains bind.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: March 24, 2015
    Assignee: National Research Council of Canada
    Inventors: John C. Zwaagstra, Maureen D. O'Connor-McCourt, Traian Sulea, Catherine Collins, Myriam Banville, Maria L. Jaramillo
  • Patent number: 8734760
    Abstract: The invention provides multivalent ligand binding agents (traps) for members of the TGF-? superfamily and polypeptide linkers and methods for making and using such constructs. The traps may be used as therapeutic or diagnostic (imaging or non-imaging) agents for diseases/disorders caused by over-production/activity of the target ligand. In an embodiment of the invention there is provided a multivalent binding agent with affinity for a member of the TGF-? superfamily, the agent having the general structure I: (<bd1>-linker1)k-[{<bd1>-linker2-<bd2>-linker3f-}n-(<bd3>)m-(linker4-<bd4>)d]h, where: n and h are independently greater than or equal to 1; d, f, m and k are independently equal to or greater than zero; bd's are polypeptide binding domains having an affinity for the same member of the TGF-? superfamily; and, linkers are unstructured polypeptide sequences.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: May 27, 2014
    Assignee: National Research Coucil of Canada
    Inventors: Maureen D. O'Connor-McCourt, Traian Sulea, John C. Zwaagstra, Jason Baardsnes
  • Patent number: 8658135
    Abstract: The invention provides hetero-multivalent ligand binging agents (traps) for members of the TGF-? superfamily, as well as methods for making and using such constructs. In an embodiment of the invention there is provided a hetero-multivalent binding agent with affinity for a member of the TGF-? superfamily. The agent comprises the general structure I: (<bd1>-linker1)k-[{<bd1>-linker2-<bd2>-linker3f-}n-(<bd3>)m-(linker4-<bd4>)d]h, where bd1, bd2, bd3 and bd4 are polypeptide binding domains having an affinity for different sites on the same member or for different members of the TGF-? superfamily; at least two of bd1, bd2, bd3, and bd4 are different from each other.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: February 25, 2014
    Assignee: National Research Council of Canada
    Inventors: Maureen D. O'Connor-McCourt, Traian Sulea, John C. Zwaagstra, Jason Baardsnes, Catherine Collins
  • Patent number: 8574548
    Abstract: The invention provides multivalent ligand binding agents (traps) for members of the TGF-? superfamily and polypeptide linkers and methods for making and using such constructs. The traps may be used as therapeutic or diagnostic (imaging or non-imaging) agents for diseases/disorders caused by over-production/activity of the target ligand. In an embodiment of the invention there is provided a multivalent binding agent with affinity for a member of the TGF-? superfamily, the agent having the general structure I: (<bd1>-linker1)k-[{<bd1>-linker2-<bd2>-linker3f-}n-(<bd3>)m-(linker4-<bd4>)d]h, where: n and h are independently greater than or equal to 1; d, f, m and k are independently equal to or greater than zero; bd's are polypeptide binding domains having an affinity for the same member of the TGF-? superfamily; and, linkers are unstructured polypeptide sequences.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: November 5, 2013
    Assignee: National Research Council of Canada
    Inventors: Maureen D. O'Connor-McCourt, Traian Sulea, John C. Zwaagstra, Jason Baardsnes
  • Publication number: 20130251712
    Abstract: The present invention addresses limitations of prior art receptor-based traps through a methodology called the clamp/click/cleave (CCC) approach. Two fusion proteins each comprising a binding domain fused to a coiled-coil are non-covalently dimerized through the coiled-coil (clamp), and the dimer so formed is stabilized by a covalent disulphide bond (click) between cysteine residues located on the fusion proteins between the binding domains and coiled-coils. Once the disulphide bond has formed, the coiled-coils are subsequently removed (cleave) by cleaving the fusions proteins at cleavage sites located between the cysteine residues and the coiled-coils to provide the covalently dimerized bivalent binding agent of the present invention. Such binding agents are useful in the treatment and diagnosis of disease states characterized by production and/or overexpression of a ligand to which the binding domains bind.
    Type: Application
    Filed: November 28, 2011
    Publication date: September 26, 2013
    Applicant: National Research Council of Canada
    Inventors: John C. Zwaagstra, Maureen D. O'Connor-McCourt, Traian Sulea, Catherine Collins, Myriam Banville, Maria L. Jaramillo
  • Publication number: 20130089499
    Abstract: The invention provides multivalent ligand binding agents (traps) for members of the TGF-? superfamily and polypeptide linkers and methods for making and using such constructs. The traps may be used as therapeutic or diagnostic (imaging or non-imaging) agents for diseases/disorders caused by over-production/activity of the target ligand. In an embodiment of the invention there is provided a multivalent binding agent with affinity for a member of the TGF-? superfamily, the agent having the general structure I: (<bd1>-linker1)k-[{<bd1>-linker2-<bd2>-linker3f-}n-(<bd3>)m-(linker4-<bd4>)d]h, where: n and h are independently greater than or equal to 1; d, f, m and k are independently equal to or greater than zero; bd's are polypeptide binding domains having an affinity for the same member of the TGF-? superfamily; and, linkers are unstructured polypeptide sequences.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 11, 2013
    Inventors: Maureen D. O'Connor-McCourt, Traian Sulea, John C. Zwaagstra, Jason Baarsdsnes
  • Publication number: 20130089500
    Abstract: The invention provides multivalent ligand binding agents (traps) for members of the TGF-? superfamily and polypeptide linkers and methods for making and using such constructs. The traps may be used as therapeutic or diagnostic (imaging or non-imaging) agents for diseases/disorders caused by over-production/activity of the target ligand. In an embodiment of the invention there is provided a multivalent binding agent with affinity for a member of the TGF-? superfamily, the agent having the general structure I: (<bd1>linker1)k-[{<bd1>-linker2-<bd2>linker3f-}n-(<bd3>)m-(linker4-<bd4>)d]h, where: n and h are independently greater than or equal to 1; d, f, m and k are independently equal to or greater than zero; bd's are polypeptide binding domains having an affinity for the same member of the TGF-? superfamily; and, linkers are unstructured polypeptide sequences.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 11, 2013
    Inventors: Maureen D. O'Connor-McCourt, Traian Sulea, John C. Zwaagstra, Jason Baarsdness
  • Patent number: 8318135
    Abstract: The invention provides multivalent ligand binding agents (traps) for members of the TGF-? superfamily and polypeptide linkers and methods for making and using such constructs. The traps may be used as therapeutic or diagnostic (imaging or non-imaging) agents for diseases/disorders caused by over-production/activity of the target ligand.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: November 27, 2012
    Assignee: National Research Council of Canada
    Inventors: Maureen D. O'Connor-McCourt, Traian Sulea, John C. Zwaagstra, Jason Baardsnes
  • Publication number: 20110236309
    Abstract: The invention provides hetero-multivalent ligand binging agents (traps) for members of the TGF-? superfamily, as well as methods for making and using such constructs. In an embodiment of the invention there is provided a hetero-multivalent binding agent with affinity for a member of the TGF-? superfamily, said agent comprising the general structure (I): (<bd1>-linker1)k-[{<bd1>-linker2-<bd2>-linker3r-}n-(<bd3>)m-(linker4-<bd4>)d]h, where bd1, bd2, bd3 and bd4 are polypeptide binding domains having an affinity for different sites on the same member or for different members of the TGF-? superfamily, wherein at least two of bd1, bd2, bd3, and bd4 are different from each other.
    Type: Application
    Filed: September 17, 2009
    Publication date: September 29, 2011
    Inventors: Maureen D. O'Connor-Mccourt, Traian Sulea, John C. Zwaagstra, Jason Baardsnes, Catherine Collins
  • Publication number: 20100120147
    Abstract: The invention provides multivalent ligand binging agents (traps) for members of the TGF-? superfamily and polypeptide linkers and methods for making and using such constructs. In an embodiment of the invention there is provided a multivalent binding agent with affinity for a member of the TGF-? superfamily, said agent comprising the general structure I: (<bd1>-linker1)k-[{bd1>-linker2-<bd2>-linker3f-}n-(<bd3>)m-(linker4-<bd4>)d]h, where: -n and h are independently greater than or equal to 1; -d, f, m and k arc independently equal to or greater than zero; -bd1, bd2, bd3 and bd4 are polypeptide binding domains having an affinity for the same member of the TGF-? superfamily, with bd1, bd2, bd3, and bd4 being independently the same or different from each other; and, -linkeri, linker2, linker3 and linker4 are unstructured polypeptide sequences; wherein the number of amino acids in each linker is determined independently and is greater than or equal to X/2.
    Type: Application
    Filed: March 19, 2008
    Publication date: May 13, 2010
    Inventors: Maureen D. O'Connor-McCourt, Traian Sulea, John C. Zwaagstra, Jason Baardsnes