Patents by Inventor Zhi-Guang Wang

Zhi-Guang Wang 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: 20150274847
    Abstract: The present invention provides conjugates formed between toxins and sugars and toxins and peptides, such as antibodies. In an exemplary embodiment, a toxin-sugar construct is conjugated to an antibody through an intact glycosyl linking group.
    Type: Application
    Filed: April 1, 2015
    Publication date: October 1, 2015
    Inventors: Shawn DeFrees, Zhi-Guang Wang
  • Patent number: 9005625
    Abstract: The present invention provides conjugates formed between toxins and sugars and toxins and peptides, such as antibodies. In an exemplary embodiment, a toxin-sugar construct is conjugated to an antibody through an intact glycosyl linking group.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: April 14, 2015
    Assignee: Novo Nordisk A/S
    Inventors: Shawn DeFrees, Zhi-Guang Wang
  • Patent number: 8361961
    Abstract: The present invention provides polypeptides that include an O-linked glycosylation site that is not present in the wild-type peptide. The polypeptides of the invention include glycoconjugates in which a species such as a water-soluble polymer, a therapeutic agent of a biomolecule is covalently linked through an intact O-linked glycosyl residue to the polypeptide. Also provided are methods of making the peptides of the invention and methods, pharmaceutical compositions containing the peptides and methods of treating, ameliorating or preventing diseased in mammals by administering an amount of a peptide of the invention sufficient to achieve the desired response.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: January 29, 2013
    Assignee: BioGeneriX AG
    Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
  • Publication number: 20120016105
    Abstract: The present invention provides polypeptides that include an O-linked glycosylation site that is not present in the wild-type peptide. The polypeptides of the invention include glycoconjugates in which a species such as a water-soluble polymer, a therapeutic agent of a biomolecule is covalently linked through an intact O-linked glycosyl residue to the polypeptide. Also provided are methods of making a glycoconjugate, methods of isolating a glycoconjugate from a reaction mixture, pharmaceutical compositions containing a glycoconjugate, and methods of treating, ameliorating or preventing diseased in mammals by administering an amount of a glycoconjugate sufficient to achieve the desired response.
    Type: Application
    Filed: July 20, 2011
    Publication date: January 19, 2012
    Applicant: NOVO NORDISK A/S
    Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
  • Patent number: 7956032
    Abstract: The present invention provides conjugates between Granulocyte Colony Stimulating Factor and PEG moieties. The conjugates are linked via an intact glycosyl linking group that is interposed between and covalently attached to the peptide and the modifying group. The conjugates are formed from both glycosylated and unglycosylated peptides by the action of a glycosyltransferase. The glycosyltransferase ligates a modified sugar moiety onto either an amino acid or glycosyl residue on the peptide. Also provided are pharmaceutical formulations including the conjugates. Methods for preparing the conjugates are also within the scope of the invention.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: June 7, 2011
    Assignee: Novo Nordisk A/S
    Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Caryn Bowe
  • Patent number: 7932236
    Abstract: Novel synthetic gangliosides and pharmaceutical compositions containing such synthetic gangliosides are described. Methods of making the novel synthetic ganglioside compounds and compositions as well as their use in the field of neuroprotection is also described.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: April 26, 2011
    Assignee: Seneb Biosciences, Inc.
    Inventors: Shawn DeFrees, Zhi-Guang Wang
  • Patent number: 7888331
    Abstract: Novel synthetic glycosphingolipids and pharmaceutical compositions containing such synthetic glycosphingolipids are described. Methods of making the novel synthetic glycosphingolipid compounds and compositions as well as their use in the field of neuroprotection and cancer treatment is also described.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: February 15, 2011
    Assignee: Seneb Biosciences, Inc.
    Inventors: Shawn A. Defrees, Karl Frank Johnson, Zhi-Guang Wang
  • Publication number: 20100324274
    Abstract: Novel synthetic gangliosides and pharmaceutical compositions containing such synthetic gangliosides are described. Methods of making the novel synthetic ganglioside compounds and compositions as well as their use in the field of neuroprotection and cancer treatment is also described.
    Type: Application
    Filed: July 6, 2010
    Publication date: December 23, 2010
    Inventors: Shawn DeFrees, Zhi-Guang Wang
  • Patent number: 7842677
    Abstract: Novel synthetic gangliosides and pharmaceutical compositions containing such synthetic gangliosides are described. Methods of making the novel synthetic ganglioside compounds and compositions as well as their use in the field of neuroprotection and cancer treatment is also described.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: November 30, 2010
    Assignee: Seneb Biosciences, Inc.
    Inventors: Shawn DeFrees, Zhi Guang Wang
  • Publication number: 20090169509
    Abstract: The present invention provides polypeptides that include an O-linked glycosylation site that is not present in the wild-type peptide. The polypeptides of the invention include glycoconjugates in which a species such as a water-soluble polymer, a therapeutic agent of a biomolecule is covalently linked through an intact O-linked glycosyl residue to the polypeptide. Also provided are methods of making the peptides of the invention and methods, pharmaceutical compositions containing the peptides and methods of treating, ameliorating or preventing diseased in mammals by administering an amount of a peptide of the invention sufficient to achieve the desired response.
    Type: Application
    Filed: January 10, 2005
    Publication date: July 2, 2009
    Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
  • Publication number: 20080242846
    Abstract: The present invention provides polypeptides that include an O-linked glycosylation site that is not present in the wild-type peptide. The polypeptides of the invention include glycoconjugates in which a species such as a water-soluble polymer, a therapeutic agent of a biomolecule is covalently linked through an intact O-linked glycosyl residue to the polypeptide. Also provided are methods of making the peptides of the invention and methods, pharmaceutical compositions containing the peptides and methods of treating, ameliorating or preventing diseased in mammals by administering an amount of a peptide of the invention sufficient to achieve the desired response.
    Type: Application
    Filed: August 22, 2007
    Publication date: October 2, 2008
    Applicant: NEOSE TECHNOLOGIES, INC.
    Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
  • Publication number: 20080125392
    Abstract: Novel synthetic gangliosides and pharmaceutical compositions containing such synthetic gangliosides are described. Methods of making the novel synthetic ganglioside compounds and compositions as well as their use in the field of neuroprotection is also described.
    Type: Application
    Filed: November 3, 2005
    Publication date: May 29, 2008
    Applicant: NEOSE TECHNOLOGIES, INC.
    Inventors: Shawn Defrees, Zhi-Guang Wang
  • Patent number: 7338933
    Abstract: The present invention provides polypeptides that include an O-linked glycosylation site that is not present in the wild-type peptide. The polypeptides of the invention include glycoconjugates in which a species such as a water-soluble polymer, a therapeutic agent of a biomolecule is covalently linked through an intact O-linked glycosyl residue to the polypeptide. Also provided are methods of making the peptides of the invention and methods, pharmaceutical compositions containing the peptides and methods of treating, ameliorating or preventing diseased in mammals by administering an amount of a peptide of the invention sufficient to achieve the desired response.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: March 4, 2008
    Assignee: Neose Technologies, Inc.
    Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
  • Publication number: 20070275908
    Abstract: Novel synthetic glycosphingolipids and pharmaceutical compositions containing such synthetic glycosphingolipids are described. Methods of making the novel synthetic glycosphingolipid compounds and compositions as well as their use in the field of neuroprotection and cancer treatment is also described.
    Type: Application
    Filed: March 4, 2004
    Publication date: November 29, 2007
    Applicant: Neose Technologies, Inc.
    Inventors: Shawn Defrees, Karl Johnson, Zhi-Guang Wang
  • Publication number: 20070254836
    Abstract: The present invention provides conjugates between Granulocyte Colony Stimulating Factor and PEG moieties. The conjugates are linked via an intact glycosyl linking group that is interposed between and covalently attached to the peptide and the modifying group. The conjugates are formed from both glycosylated and unglycosylated peptides by the action of a glycosyltransferase. The glycosyltransferase ligates a modified sugar moiety onto either an amino acid or glycosyl residue on the peptide. Also provided are pharmaceutical formulations including the conjugates. Methods for preparing the conjugates are also within the scope of the invention.
    Type: Application
    Filed: December 3, 2004
    Publication date: November 1, 2007
    Inventors: Shawn Defrees, Henrik Clausen, David Zopf, Zhi-Guang Wang, Caryn Bowe, Marc Schwartz, Bingyuan Wu
  • Publication number: 20070059275
    Abstract: The present invention provides conjugates formed between toxins and sugars and toxins and peptides, such as antibodies. In an exemplary embodiment, a toxin-sugar construct is conjugated to an antibody through an intact glycosyl linking group.
    Type: Application
    Filed: July 26, 2004
    Publication date: March 15, 2007
    Inventors: Shawn DeFrees, Zhi-Guang Wang
  • Publication number: 20070014759
    Abstract: The present invention provides conjugates between Granulocyte Colony Stimulating Factor and PEG moieties. The conjugates are linked via an intact glycosyl linking group that is interposed between and covalently attached to the peptide and the modifying group. The conjugates are formed from both glycosylated and unglycosylated peptides by the action of a glycosyltransferase. The glycosyltransferase ligates a modified sugar moiety onto either an amino acid or glycosyl residue on the peptide. Also provided are pharmaceutical formulations including the conjugates. Methods for preparing the conjugates are also within the scope of the invention.
    Type: Application
    Filed: November 2, 2005
    Publication date: January 18, 2007
    Applicant: Neose Technologies, Inc.
    Inventors: Shawn DeFrees, Henrik Clausen, David Zopf, Zhi-Guang Wang, Caryn Bowe
  • Publication number: 20050250678
    Abstract: The present invention provides polypeptides that include an O-linked glycosylation site that is not present in the wild-type peptide. The polypeptides of the invention include glycoconjugates in which a species such as a water-soluble polymer, a therapeutic agent of a biomolecule is covalently linked through an intact O-linked glycosyl residue to the polypeptide. Also provided are methods of making the peptides of the invention and methods, pharmaceutical compositions containing the peptides and methods of treating, ameliorating or preventing diseased in mammals by administering an amount of a peptide of the invention sufficient to achieve the desired response.
    Type: Application
    Filed: January 10, 2005
    Publication date: November 10, 2005
    Applicant: Neose Technologies, Inc.
    Inventors: Shawn DeFrees, David Zopf, Zhi-Guang Wang, Henrik Clausen
  • Publication number: 20020006629
    Abstract: An affinity matrix having a tumor-associated carbohydrate- or glycopeptide-based antigen bound to the matrix is provided. The affinity matrix is used to isolate, characterize, and quantitate functional antibodies or antigen-binding molecules to the tumor-associated carbohydrate- or glycopeptide-based antigen. The invention also provides a method of preparing the affinity matrix. In addition the invention provides for diagnostic and therapeutic uses of the isolated antibodies or antigen-binding molecules.
    Type: Application
    Filed: February 27, 2001
    Publication date: January 17, 2002
    Inventors: Samuel J. Danishefsky, Kenneth O. Lloyd, Zhi-Guang Wang, Lawrence J. Williams
  • Patent number: 5206350
    Abstract: This invention relates to a new synthetic process for the preparation of anti-tumor agent Etoposide (VP16-213). the process, which has shorten reaction route, simple procedure, high yield and low materials cost, therefore facilitates the commercial manufacture of etoposide.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: April 27, 1993
    Assignee: Shanghai Institute of Pharmaceutical Industry
    Inventors: Zhi-guang Wang, Wei-yong Ma, Chun-nian Zhang