Patents by Inventor Shawn A. Defrees

Shawn A. Defrees 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: 20210100876
    Abstract: The present invention relates to mutants of Fibroblast Growth Factor (FGF), particularly FGF-20 and FGF-21, which contain newly introduced N-Linked or O-Linked glycosylation site(s). The polynucleotide coding sequences for the mutants, expression cassettes comprising the coding sequences, cells expressing the mutants, and methods for producing the mutants are also disclosed. Further disclosed are pharmaceutical compositions comprising the mutants and method for using the mutants.
    Type: Application
    Filed: October 20, 2020
    Publication date: April 8, 2021
    Inventor: Shawn DeFrees
  • Patent number: 10874714
    Abstract: The present invention relates to mutants of Fibroblast Growth Factor (FGF), particularly FGF-20 and FGF-21, which contain newly introduced N-linked or O-linked glycosylation site(s). The polynucleotide coding sequences for the mutants, expression cassettes comprising the coding sequences, cells expressing the mutants, and methods for producing the mutants are also disclosed. Further disclosed are pharmaceutical compositions comprising the mutants and method for using the mutants.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: December 29, 2020
    Assignee: 89BIO LTD.
    Inventor: Shawn DeFrees
  • Publication number: 20200197427
    Abstract: This invention provides compounds, compositions, and methods for treating a disorder selected from cancer, hyperinsulinemia, hypoglycemia, hyperinsulinemia with hypoglycemia, atypical Parkinson's disease, Huntington's disease, multiple systems atrophy, GM3 synthase deficiency, GM2 synthase deficiency or tauopathy.
    Type: Application
    Filed: December 18, 2019
    Publication date: June 25, 2020
    Inventor: Shawn Defrees
  • Patent number: 10555959
    Abstract: This invention provides compounds, compositions, and methods for treating a disorder selected from cancer, hyperinsulinemia, hypoglycemia, hyperinsulinemia with hypoglycemia, atypical Parkinson's disease, Huntington's disease, multiple systems atrophy, GM3 synthase deficiency, GM2 synthase deficiency or tauopathy.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: February 11, 2020
    Assignee: La Jolla Pharmaceutical Company
    Inventor: Shawn Defrees
  • Publication number: 20200024628
    Abstract: The present invention relates to a novel endoglycoceramidase whose hydrolytic activity has been substantially reduced or eliminated, such that the enzyme is useful for synthesis of glycolipids from a monosaccharide or oligosaccharide and a ceramide. More specifically, the endoglycoceramidase is a mutant version of a naturally occurring endoglycoceramidase, preferably comprising a mutation within the active site or the nucleophilic site of the enzyme and more preferably comprising a substitution mutation of the Glu residue within the active site or the nucleophilic site. Also disclosed are a method for generating the mutant endoglycoceramidase and a method for enzymatically synthesizing glycolipids using this mutant enzyme.
    Type: Application
    Filed: May 17, 2019
    Publication date: January 23, 2020
    Inventors: Karl F. Johnson, Shawn DeFrees, Stephen Withers, Mark Vaughan
  • Patent number: 10294504
    Abstract: The present invention relates to a novel endoglycoceramidase whose hydrolytic activity has been substantially reduced or eliminated, such that the enzyme is useful for synthesis of glycolipids from a monosaccharide or oligosaccharide and a ceramide. More specifically, the endoglycoceramidase is a mutant version of a naturally occurring endoglycoceramidase, preferably comprising a mutation within the active site or the nucleophilic site of the enzyme and more preferably comprising a substitution mutation of the Glu residue within the active site or the nucleophilic site. Also disclosed are a method for generating the mutant endoglycoceramidase and a method for enzymatically synthesizing glycolipids using this mutant enzyme.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: May 21, 2019
    Assignees: La Jolla Pharmaceutical Company, The University of British Columbia
    Inventors: Karl F. Johnson, Shawn Defrees, Stephen Withers, Mark Vaughan
  • Publication number: 20170281785
    Abstract: The present invention provides conjugates between peptides and PEG moieties through glycerol linkers.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 5, 2017
    Applicant: Novo Nordisk A/S
    Inventors: Shawn DeFrees, Xiao Nong Zeng
  • Publication number: 20170136104
    Abstract: Conjugates between Factor IX and PEG moieties. are disclosed in the present application. The conjugates are linked via a glycosyl linking group interposed between and covalently attached to the peptide and the modifying group. Conjugates are formed from glycosylated peptides by the action of a glycosyltransferase. The glycosyltransferase ligates a modified sugar moiety onto a glycosyl residue on the peptide. Also provided are methods for preparing the conjugates, methods for treating various disease conditions with the conjugates, and pharmaceutical formulations including the conjugates.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 18, 2017
    Inventors: Shawn Defrees, Robert J. Bayer, Caryn Bowe, Krishnasamy Panneerselvam
  • Publication number: 20170007712
    Abstract: The invention includes methods and compositions for remodeling a peptide molecule, including the addition or deletion of one or more glycosyl groups to a peptide, and/or the addition of a modifying group to a peptide.
    Type: Application
    Filed: August 1, 2016
    Publication date: January 12, 2017
    Applicant: Novo Nordisk A/S
    Inventors: Shawn DeFrees, David A. Zopf, Robert J. Bayer, David Hakes, Caryn L. Bowe, Xi Chen
  • Publication number: 20160361427
    Abstract: Conjugates between Factor IX and PEG moieties. are disclosed in the present application. The conjugates are linked via a glycosyl linking group interposed between and covalently attached to the peptide and the modifying group. Conjugates are formed from glycosylated peptides by the action of a glycosyltransferase. The glycosyltransferase ligates a modified sugar moiety onto a glycosyl residue on the peptide. Also provided are methods for preparing the conjugates, methods for treating various disease conditions with the conjugates, and pharmaceutical formulations including the conjugates.
    Type: Application
    Filed: August 19, 2016
    Publication date: December 15, 2016
    Inventors: Shawn Defrees, Robert J. Bayer, Caryn Bowe, Krishnasamy Panneerselvam
  • Patent number: 9493499
    Abstract: The current invention provides methods (e.g., large-scale processes) for the production of nucleotide sugars, which are modified with a polymeric modifying group, such as poly(alkylene oxide) moieties (e.g., poly(ethylene glycol) or poly(propylene glycol)) moieties. A typical process of the invention includes anion exchange chromatography followed by an ultrafiltration procedure, such as tangential flow filtration. The process of the invention provides modified nucleotide sugars in unexpectedly high purity and high overall yields.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: November 15, 2016
    Assignee: Novo Nordisk A/S
    Inventors: Shawn DeFrees, Caryn Bowe
  • Publication number: 20160222086
    Abstract: The present invention relates to B-domain truncated Factor VIII molecules with a modified circulatory half-life, said molecule being covalently conjugated with a hydrophilic polymer. The invention furthermore relates to methods for obtaining such molecules as well as use of such molecules.
    Type: Application
    Filed: August 20, 2015
    Publication date: August 4, 2016
    Inventors: Gert Bolt, Brian Berg Stidsen Vandahl, Lars Thim, Henning Ralf Stennicke, Thomas Dock Steenstrup, Shawn Defrees
  • Publication number: 20160200795
    Abstract: The invention includes methods and compositions for remodeling a peptide molecule, including the addition or deletion of one or more glycosyl groups to a peptide, and/or the addition of a modifying group to a peptide.
    Type: Application
    Filed: December 18, 2015
    Publication date: July 14, 2016
    Applicant: Novo Nordisk A/S
    Inventors: Shawn DeFrees, David A. Zopf, Robert J. Bayer, Caryn Bowe, David James Hakes, Xi Chen
  • Publication number: 20160193353
    Abstract: The invention includes methods and compositions for remodeling a peptide molecule, including the addition or deletion of one or more glycosyl groups to a peptide, and/or the addition of a modifying group to a peptide.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Applicant: Novo Nordisk A/S
    Inventors: Shawn DeFrees, David A. Zopf, Robert J. Bayer, Caryn Bowe, David James Hakes, Xi Chen
  • Publication number: 20160184412
    Abstract: Conjugates between Factor IX and PEG moieties, are disclosed in the present application. The conjugates are linked via a glycosyl linking group interposed between and covalently attached to the peptide and the modifying group. Conjugates are formed from glycosylated peptides by the action of a glycosyltransferase. The glycosyltransferase ligates a modified sugar moiety onto a glycosyl residue on the peptide. Also provided are methods for preparing the conjugates, methods for treating various disease conditions with the conjugates, and pharmaceutical formulations including the conjugates.
    Type: Application
    Filed: January 25, 2016
    Publication date: June 30, 2016
    Inventors: Shawn Defrees, Robert J. Bayer, Caryn Bowe, Krishnasamy Panneerselvam
  • Publication number: 20160158319
    Abstract: The present invention relates to mutants of Fibroblast Growth Factor (FGF), particularly FGF-20 and FGF-21, which contain newly introduced N-linked or O-linked glycosylation site(s). The polynucleotide coding sequences for the mutants, expression cassettes comprising the coding sequences, cells expressing the mutants, and methods for producing the mutants are also disclosed. Further disclosed are pharmaceutical compositions comprising the mutants and method for using the mutants.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 9, 2016
    Applicant: Novo Nordisk A/S
    Inventor: Shawn DeFrees
  • Publication number: 20160151401
    Abstract: This invention provides compounds, compositions, and methods for treating a disorder selected from cancer, hyperinsulinemia, hypoglycemia, hyperinsulinemia with hypoglycemia, atypical Parkinson's disease, Huntington's disease, multiple systems atrophy, GM3 synthase deficiency, GM2 synthase deficiency or tauopathy.
    Type: Application
    Filed: November 23, 2015
    Publication date: June 2, 2016
    Inventor: Shawn DeFrees
  • Publication number: 20160032342
    Abstract: The present invention relates to a novel endoglycoceramidase whose hydrolytic activity has been substantially reduced or eliminated, such that the enzyme is useful for synthesis of glycolipids from a monosaccharide or oligosaccharide and a ceramide. More specifically, the endoglycoceramidase is a mutant version of a naturally occurring endoglycoceramidase, preferably comprising a mutation within the active site or the nucleophilic site of the enzyme and more preferably comprising a substitution mutation of the Glu residue within the active site or the nucleophilic site. Also disclosed are a method for generating the mutant endoglycoceramidase and a method for enzymatically synthesizing glycolipids using this mutant enzyme.
    Type: Application
    Filed: June 29, 2015
    Publication date: February 4, 2016
    Applicants: Seneb Biosciences, Inc., The University of British Columbia
    Inventors: Karl F. JOHNSON, Shawn DEFREES, Stephen WITHERS, Mark VAUGHAN
  • Publication number: 20150343080
    Abstract: The invention includes methods and compositions for remodeling a peptide molecule, including the addition or deletion of one or more glycosyl groups to a peptide, and/or the addition of a modifying group to a peptide.
    Type: Application
    Filed: May 26, 2015
    Publication date: December 3, 2015
    Inventors: Shawn DeFrees, David A. Zopf, Robert J. Bayer, David James Hakes, Caryn L. Bowe, Xi Chen
  • Patent number: 9200049
    Abstract: The present invention relates to mutants of Fibroblast Growth Factor (FGF), particularly FGF-20 and FGF-21, which contain newly introduced N-linked or O-linked glycosylation site(s). The polynucleotide coding sequences for the mutants, expression cassettes comprising the coding sequences, cells expressing the mutants, and methods for producing the mutants are also disclosed. Further disclosed are pharmaceutical compositions comprising the mutants and method for using the mutants.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: December 1, 2015
    Assignee: Novo Nordisk A/S
    Inventor: Shawn DeFrees