Patents by Inventor Stefan Wildt

Stefan Wildt 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: 20210317441
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Application
    Filed: June 10, 2021
    Publication date: October 14, 2021
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Patent number: 11046951
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: June 29, 2021
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Publication number: 20190055546
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Application
    Filed: October 3, 2018
    Publication date: February 21, 2019
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Patent number: 9845464
    Abstract: Methods for display of recombinant proteins or protein libraries on the surface of lower eukaryotes such as yeast and filamentous fungi are described. The methods are useful for screening libraries of recombinant proteins in lower eukaryotes to identify particular proteins with desired properties from the array of proteins in the libraries. The methods are particularly useful for constructing and screening antibody libraries in lower eukaryotes.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: December 19, 2017
    Assignee: GlycoFi, Inc.
    Inventors: Dongxing Zha, Stefan Wildt
  • Publication number: 20170327817
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Application
    Filed: January 27, 2016
    Publication date: November 16, 2017
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Patent number: 9758553
    Abstract: Lower eukaryotic host cells have been engineered to produce glycoprotein having at least one terminal ?-galactosyl epitope. The glycoproteins are useful for the production of highly antigenic glycoprotein compositions with advantages for the production of vaccines.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: September 12, 2017
    Assignee: MERCK SHARP & DOHME CORP.
    Inventors: Natarajan Sethuraman, Robert C. Davidson, Terrance A. Stadheim, Stefan Wildt
  • Publication number: 20170107509
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Application
    Filed: January 27, 2016
    Publication date: April 20, 2017
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Patent number: 9260712
    Abstract: Methods for display of recombinant whole immunoglobulins or immunoglobulin libraries on the surface of eukaryote host cells, including yeast and filamentous fungi, are described. The methods are useful for screening libraries of recombinant immunoglobulins in eukaryote host cells to identify immunoglobulins that are specific for an antigen of interest.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: February 16, 2016
    Assignee: MERCK SHARP & DOHME CORP.
    Inventors: Bianka Prinz, Natarajan Sethuraman, Dongxing Zha, Stefan Wildt, Piotr Bobrowicz
  • Patent number: 9139632
    Abstract: Methods for producing proteins and glycoproteins in Pichia pastoris that lack detectable cross binding activity to antibodies made against host cell antigens are described. In particular, methods are described wherein recombinant Pichia pastoris strains that do not display a ?-mannosyltransferase 2 activity with respect to an N-glycan or O-glycan and do not display at least one activity selected from a ?-mannosyltransferase 1, 3, and 4 activity to produce recombinant proteins and glycoproteins. These recombinant Pichia pastoris strains can produce proteins and glycoproteins that lack detectable ?-mannosidase resistant ?-mannose residues thereon and thus, lack cross binding activity to antibodies against host cell antigens. Further described are methods for producing bi-sialylated human erythropoietin in Pichia pastoris that lack detectable cross binding activity to antibodies against host cell antigens.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: September 22, 2015
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Piotr Bobrowicz, Sujatha Gomathinayagam, Stephen Hamilton, Huijuan Li, Natarajan Sethuraman, Terrance A. Stadheim, Stefan Wildt
  • Publication number: 20150211000
    Abstract: Methods for display of recombinant proteins or protein libraries on the surface of lower eukaryotes such as yeast and filamentous fungi are described. The methods are useful for screening libraries of recombinant proteins in lower eukaryotes to identify particular proteins with desired properties from the array of proteins in the libraries. The methods are particularly useful for constructing and screening antibody libraries in lower eukaryotes.
    Type: Application
    Filed: October 17, 2014
    Publication date: July 30, 2015
    Inventors: Dongxing Zha, Stefan Wildt
  • Publication number: 20150152427
    Abstract: The present invention relates to host cells having modified lipid-linked oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar transporters and mannosidases to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified lipid-linked oligosaccharides are created or selected. N-glycans made in the engineered host cells have a GlcNAcMan3GlcNAc2 core structure which may then be modified further by heterologous expression of one or more enzymes, e.g., glycosyl-transferases, sugar transporters and mannosidases, to yield human-like glycoproteins. For the production of therapeutic proteins, this method may be adapted to engineer cell lines in which any desired glycosylation structure may be obtained.
    Type: Application
    Filed: October 9, 2014
    Publication date: June 4, 2015
    Inventors: Stefan Wildt, Robert Gordon Miele, Juergen Hermann Nett, Robert C. Davidson
  • Publication number: 20150079633
    Abstract: The present invention relates to lower eukaryotic host cells having modified oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar and sugar nucleotide transporters to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified lipid-linked oligosaccharides are created or selected. N-glycans made in the engineered host cells exhibit GnTIV, GnTV, GnT VI or GnTIX activity, which produce multiantennary N-glycan structures and may be modified further by heterologous expression of one or more enzymes, e.g., glycosyltransferases, sugar, sugar nucleotide transporters, to yield human-like glycoproteins. For the production of therapeutic proteins, this method may be adapted to engineer cell lines in which any desired glycosylation structure may be obtained.
    Type: Application
    Filed: July 25, 2014
    Publication date: March 19, 2015
    Inventors: Piotr Bobrowicz, Stephen R. Hamilton, Tillman U. Gerngross, Stefan Wildt, Byung-Kwon Choi, Juergen Hermann Nett, Robert C. Davidson
  • Publication number: 20150051381
    Abstract: The present invention relates to eukaryotic host cells having modified oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar transporters and mannosidases to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The invention provides nucleic acid molecules and combinatorial libraries which can be used to successfully target and express mammalian enzymatic activities such as those involved in glycosylation to intracellular compartments in a eukaryotic host cell. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified oligosaccharides are created or selected. N-glycans made in the engineered host cells have a Man5GlcNAc2 core structure which may then be modified further by heterologous expression of one or more enzymes, e.g.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 19, 2015
    Inventors: Tillman U. Gerngross, Stefan Wildt, Byung-kwon Choi, Juergen Hermann Nett, Piotr Bobrowicz, Stephen R. Hamilton, Robert C. Davidson
  • Patent number: 8936918
    Abstract: Lower eukaryotic host cells have been recombinantly engineered to produce glycoprotein having human-like O-glycosylation. The glycoproteins are useful for the production of glycoprotein compositions with advantages for the production of human therapeutics.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: January 20, 2015
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Piotr Bobrowicz, William J. Cook, Stephen Hamilton, Juergen Nett, Terrance A. Stadheim, Stefan Wildt
  • Patent number: 8932825
    Abstract: The present invention relates to host cells having modified lipid-linked oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar transporters and mannosidases to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified lipid-linked oligosaccharides are created or selected. N-glycans made in the engineered host cells have a GlcNAcMan3GlcNAc2 core structure which may then be modified further by heterologous expression of one or more enzymes, e.g., glycosyl-transferases, sugar transporters and mannosidases, to yield human-like glycoproteins. For the production of therapeutic proteins, this method may be adapted to engineer cell lines in which any desired glycosylation structure may be obtained.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: January 13, 2015
    Assignee: GlycoFi Inc.
    Inventors: Stefan Wildt, Robert Gordon Miele, Juergen Hermann Nett, Robert C. Davidson
  • Patent number: 8883483
    Abstract: The present invention relates to eukaryotic host cells having modified oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar transporters and mannosidases to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The invention provides nucleic acid molecules and combinatorial libraries which can be used to successfully target and express mammalian enzymatic activities such as those involved in glycosylation to intracellular compartments in a eukaryotic host cell. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified oligosaccharides are created or selected. N-glycans made in the engineered host cells have a Man5GlcNAc2 core structure which may then be modified further by heterologous expression of one or more enzymes, e.g.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: November 11, 2014
    Assignee: GlycoFi, Inc.
    Inventors: Tillman U. Gerngross, Stefan Wildt, Byung-kwon Choi, Juergen Nett, Piotr Bobrowicz, Stephen Hamilton, Robert Davidson
  • Patent number: 8877686
    Abstract: Methods for display of recombinant proteins or protein libraries on the surface of lower eukaryotes such as yeast and filamentous fungi are described. The methods are useful for screening libraries of recombinant proteins in lower eukaryotes to identify particular proteins with desired properties from the array of proteins in the libraries. The methods are particularly useful for constructing and screening antibody libraries in lower eukaryotes.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: November 4, 2014
    Assignee: Glycofi, Inc.
    Inventors: Dongxing Zha, Stefan Wildt
  • Patent number: 8877462
    Abstract: The present invention relates to eukaryotic host cells having modified oligosaccharides which may be modified further by heterologous expression of a set of glycosyltransferases, sugar transporters and mannosidases to become host-strains for the production of mammalian, e.g., human therapeutic glycoproteins. The invention provides nucleic acid molecules and combinatorial libraries which can be used to successfully target and express mammalian enzymatic activities such as those involved in glycosylation to intracellular compartments in a eukaryotic host cell. The process provides an engineered host cell which can be used to express and target any desirable gene(s) involved in glycosylation. Host cells with modified oligosaccharides are created or selected. N-glycans made in the engineered host cells have a Man5GlcNAc2 core structure which may then be modified further by heterologous expression of one or more enzymes, e.g.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: November 4, 2014
    Assignee: GlycoFi, Inc.
    Inventors: Tillman U. Gerngross, Stefan Wildt, Byung-kwon Choi, Juergen Hermann Nett, Piotr Bobrowicz, Stephen R. Hamilton, Robert C. Davidson
  • Publication number: 20140314797
    Abstract: Lower eukaryotic host cells have been engineered to produce glycoprotein having at least one terminal ?-galactosyl epitope. The glycoproteins are useful for the production of highly antigenic glycoprotein compositions with advantages for the production of vaccines.
    Type: Application
    Filed: July 2, 2014
    Publication date: October 23, 2014
    Inventors: Natarajan Sethuraman, Robert C. Davidson, Terrance A. Stadheim, Stefan Wildt
  • Patent number: 8815544
    Abstract: The present invention provides a novel lower eukaryotic host cell producing human-like glycoproteins characterized as having a terminal ?-galactose residue and essentially lacking fucose and sialic acid residues. The present invention also provides a method for catalyzing the transfer of a galactose residue from UDP-galactose onto an acceptor substrate in a recombinant lower eukaryotic host cell, which can be used as a therapeutic glycoprotein.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: August 26, 2014
    Assignee: Glycofi, Inc.
    Inventors: Robert Davidson, Tillman Gerngross, Stefan Wildt, Byung-Kwon Choi, Juergen Hermann Nett, Piotr Bobrowicz, Stephen Robin Hamilton