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).
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Publication number: 20150274847Abstract: 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: ApplicationFiled: April 1, 2015Publication date: October 1, 2015Inventors: Shawn DeFrees, Zhi-Guang Wang
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Patent number: 9005625Abstract: 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: GrantFiled: July 26, 2004Date of Patent: April 14, 2015Assignee: Novo Nordisk A/SInventors: Shawn DeFrees, Zhi-Guang Wang
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Patent number: 8361961Abstract: 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: GrantFiled: January 10, 2005Date of Patent: January 29, 2013Assignee: BioGeneriX AGInventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
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Publication number: 20120016105Abstract: 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: ApplicationFiled: July 20, 2011Publication date: January 19, 2012Applicant: NOVO NORDISK A/SInventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
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Patent number: 7956032Abstract: 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: GrantFiled: June 23, 2005Date of Patent: June 7, 2011Assignee: Novo Nordisk A/SInventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Caryn Bowe
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Patent number: 7932236Abstract: 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: GrantFiled: November 3, 2005Date of Patent: April 26, 2011Assignee: Seneb Biosciences, Inc.Inventors: Shawn DeFrees, Zhi-Guang Wang
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Patent number: 7888331Abstract: 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: GrantFiled: March 4, 2004Date of Patent: February 15, 2011Assignee: Seneb Biosciences, Inc.Inventors: Shawn A. Defrees, Karl Frank Johnson, Zhi-Guang Wang
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Publication number: 20100324274Abstract: 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: ApplicationFiled: July 6, 2010Publication date: December 23, 2010Inventors: Shawn DeFrees, Zhi-Guang Wang
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Patent number: 7842677Abstract: 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: GrantFiled: August 29, 2002Date of Patent: November 30, 2010Assignee: Seneb Biosciences, Inc.Inventors: Shawn DeFrees, Zhi Guang Wang
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Publication number: 20090169509Abstract: 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: ApplicationFiled: January 10, 2005Publication date: July 2, 2009Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
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Publication number: 20080242846Abstract: 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: ApplicationFiled: August 22, 2007Publication date: October 2, 2008Applicant: NEOSE TECHNOLOGIES, INC.Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
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Publication number: 20080125392Abstract: 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: ApplicationFiled: November 3, 2005Publication date: May 29, 2008Applicant: NEOSE TECHNOLOGIES, INC.Inventors: Shawn Defrees, Zhi-Guang Wang
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Patent number: 7338933Abstract: 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: GrantFiled: January 10, 2005Date of Patent: March 4, 2008Assignee: Neose Technologies, Inc.Inventors: Shawn DeFrees, David A. Zopf, Zhi-Guang Wang, Henrik Clausen
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Publication number: 20070275908Abstract: 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: ApplicationFiled: March 4, 2004Publication date: November 29, 2007Applicant: Neose Technologies, Inc.Inventors: Shawn Defrees, Karl Johnson, Zhi-Guang Wang
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Publication number: 20070254836Abstract: 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: ApplicationFiled: December 3, 2004Publication date: November 1, 2007Inventors: Shawn Defrees, Henrik Clausen, David Zopf, Zhi-Guang Wang, Caryn Bowe, Marc Schwartz, Bingyuan Wu
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Publication number: 20070059275Abstract: 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: ApplicationFiled: July 26, 2004Publication date: March 15, 2007Inventors: Shawn DeFrees, Zhi-Guang Wang
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Publication number: 20070014759Abstract: 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: ApplicationFiled: November 2, 2005Publication date: January 18, 2007Applicant: Neose Technologies, Inc.Inventors: Shawn DeFrees, Henrik Clausen, David Zopf, Zhi-Guang Wang, Caryn Bowe
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Publication number: 20050250678Abstract: 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: ApplicationFiled: January 10, 2005Publication date: November 10, 2005Applicant: Neose Technologies, Inc.Inventors: Shawn DeFrees, David Zopf, Zhi-Guang Wang, Henrik Clausen
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Publication number: 20020006629Abstract: 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: ApplicationFiled: February 27, 2001Publication date: January 17, 2002Inventors: Samuel J. Danishefsky, Kenneth O. Lloyd, Zhi-Guang Wang, Lawrence J. Williams
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Patent number: 5206350Abstract: 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: GrantFiled: June 7, 1991Date of Patent: April 27, 1993Assignee: Shanghai Institute of Pharmaceutical IndustryInventors: Zhi-guang Wang, Wei-yong Ma, Chun-nian Zhang