Patents by Inventor Wynn A. Volkert
Wynn A. Volkert 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: 20070065362Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: ApplicationFiled: November 3, 2006Publication date: March 22, 2007Inventors: Timothy Hoffman, Wynn Volkert, Ning Li, Gary Sieckman, Chrys-Ann Higginbotham
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Patent number: 7147838Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: GrantFiled: December 29, 2004Date of Patent: December 12, 2006Assignee: Curators of the University of MissouriInventors: Timothy J. Hoffman, Wynn A. Volkert, Ning Li, Gary Sieckman, Chrys-Ann Higginbotham
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Patent number: 7060247Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a-moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: GrantFiled: May 2, 2001Date of Patent: June 13, 2006Assignee: The Curators of the University of MissouriInventors: Timothy J. Hoffman, Wynn A. Volkert, Gary Sieckman, Charles J. Smith, Hariprasad Gali
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Publication number: 20060067886Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: ApplicationFiled: November 4, 2005Publication date: March 30, 2006Inventors: Timothy Hoffman, Wynn Volkert, Gary Sieckman, Charles Smith, Hariprasad Gali
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Patent number: 6989158Abstract: There is provided a complex for use as a therapeutic pharmaceutical, the complex has a ligand containing at least one hydroxyalkyl phosphine donor group bound to a gold atom to form a stable gold-ligand complex. Also provided is a method of treating cancer by administering an effective amount of a complex having a ligand of at least one hydroxyalkyl phosphine group bound to a gold atom to form a stable gold-ligand complex. Also provided is a method of preventing the metastasis of cancer and arresting cell growth by administering an effective amount of a complex having a ligand of at least one hydroxyalkyl phosphine group bound to a gold atom to form a stable gold-ligand complex.Type: GrantFiled: June 23, 2000Date of Patent: January 24, 2006Assignee: The Curators of the University of MissouriInventors: Kattesh V. Katti, Wynn A. Volkert, Timothy Hoffman
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Publication number: 20050163710Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: ApplicationFiled: December 29, 2004Publication date: July 28, 2005Inventors: Timothy Hoffman, Wynn Volkert, Ning Li, Gary Sieckman, Chrys-Ann Higginbotham
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Patent number: 6921526Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: GrantFiled: April 12, 2002Date of Patent: July 26, 2005Assignee: Curators of the University of MissouriInventors: Timothy J. Hoffman, Wynn A. Volkert, Ning Li, Gary Sieckman, Chrys-Ann Higginbotham
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Patent number: 6780397Abstract: This invention describes a novel strategy to produce phosphine-functionalized biomolecules (e.g. peptides or proteins) for potential use in the design and development of site-specific radiopharmaceuticals for diagnosis or therapy of specific cancers. Hydrophilic alkyl phosphines, in general, tend to be oxidatively unstable. Therefore, incorporation of such phosphine functionalities on peptide (and other biomolecule) backbones, without oxidizing the PIII centers, is difficult. In this context this discovery reports on a new technology by which phosphines, in the form of bifunctional chelating agents, can be directly incorporated on biomolecular backbones using manual synthetic or solid phase peptide synthesis methodologies. The superior ligating abilities of phosphine ligands, with various diagnostically (e.g. TC-99m) or therapeutically (e.g.Type: GrantFiled: August 31, 1999Date of Patent: August 24, 2004Assignee: Curators of the University of MissouriInventors: Kattesh V. Katti, Hariprasad Gali, Wynn A. Volkert
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Publication number: 20040042963Abstract: This invention describes a novel strategy to produce phosphine-functionalized biomolecules (e.g. peptides or proteins) for potential use in the design and development of site-specific radiopharmaceuticals for diagnosis or therapy of specific cancers. Hydrophilic alkyl phosphines, in general, tend to be oxidatively unstable. Therefore, incorporation of such phosphine functionalities on peptide (and other biomolecule) backbones, without oxidizing the PIII centers, is difficult. In this context this discovery reports on a new technology by which phosphines, in the form of bifunctional chelating agents, can be directly incorporated on biomolecular backbones using manual synthetic or solid phase peptide synthesis methodologies. The superior ligating abilities of phosphine ligands, with various diagnostically (e.g. TC-99m) or therapeutically (e.g.Type: ApplicationFiled: August 31, 1999Publication date: March 4, 2004Inventors: KATTESH V. KATTI, HARIPRASAD GALI, WYNN A. VOLKERT
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Publication number: 20030232013Abstract: The present invention provides methods of targeting breast cancer, prostate cancer, pancreatic cancer or melanoma cells using ST peptides. These methods permit both diagnostic evaluation and therapeutic intervention using appropriate conjugates.Type: ApplicationFiled: February 20, 2003Publication date: December 18, 2003Inventors: Gary Sieckman, Wynn Volkert, Leonard Forte, Timothy Hoffman, Hariprasad Gali
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Patent number: 6635235Abstract: There is provided a method of labeling a biomolecule with a transition metal or radiometal in a site specific manner to produce a diagnostic or therapeutic pharmaceutical compound by synthesizing a P2N2-bifunctional chelating agent intermediate, complexing the intermediate with a radio metal or a transition metal, and covalently linking the resulting metal-complexed bifunctional chelating agent with a biomolecule in a site specific manner. Also provided is a method of synthesizing the —PR2 containing biomolecules by synthesizing a P2N2-bifunctional chelating agent intermediate, complexing the intermediate with a radiometal or a transition metal, and covalently linking the resulting radio metal-complexed bifunctional chelating agent with a biomolecule in a site specific manner. There is provided a therapeutic or diagnostic agent comprising a —PR2 containing biomolecule.Type: GrantFiled: June 23, 2000Date of Patent: October 21, 2003Assignee: The Curators of the University of MissouriInventors: Kattesh V. Katti, Kandikere R. Prabhu, Hariprasad Gali, Nagavara Kishore Pillarsetty, Wynn A. Volkert
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Publication number: 20020176819Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: ApplicationFiled: April 12, 2002Publication date: November 28, 2002Inventors: Timothy J. Hoffman, Wynn A. Volkert, Ning Li, Gary Sieckman, C.A. Higginbotham
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Publication number: 20020054855Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a-moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: ApplicationFiled: May 2, 2001Publication date: May 9, 2002Inventors: Timothy J. Hoffman, Wynn A. Volkert, Gary Sieckman, Charles J. Smith, Hariprasad Gali
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Patent number: 6200546Abstract: A compound for use as a therapeutic or diagnostic radiopharmaceutical includes a group capable of complexing a medically useful metal attached to a moiety which is capable of binding to a gastrin releasing peptide receptor. A method for treating a subject having a neoplastic disease includes administering to the subject an effective amount of a radiopharmaceutical having a metal chelated with a chelating group attached to a moiety capable of binding to a gastrin releasing peptide receptor expressed on tumor cells with subsequent internalization inside of the cell. A method of forming a therapeutic or diagnostic compound includes reacting a metal synthon with a chelating group covalently linked with a moiety capable of binding a gastrin releasing peptide receptor.Type: GrantFiled: April 22, 1998Date of Patent: March 13, 2001Assignee: The Curators of the University of MissouriInventors: Timothy J. Hoffman, Wynn A. Volkert, Ning Li, Gary Sieckman, C. A. Higginbotham
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Patent number: 6054115Abstract: A compound and method of making a compound for use as a diagnostic or therapeutic pharmaceutical comprises at least one functionalized hydroxyalkyl phosphine donor group and one or more sulfur or nitrogen donor and a metal combined with the ligand.Type: GrantFiled: March 3, 1998Date of Patent: April 25, 2000Assignee: The Curators of the University of MissouriInventors: Kattesh V. Katti, Srinivasa Rao Karra, Douglas E. Berning, C. Jeffrey Smith, Wynn A. Volkert, Alan R. Ketring
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Patent number: 5948386Abstract: A method of forming phosphine-amine conjugates includes reacting a hydroxymethyl phosphine group of an amine-free first molecule with at least one free amine group of a second molecule to covalently bond the first molecule with the second molecule through an aminomethyl phosphorus linkage and the conjugates formed thereby.Type: GrantFiled: March 14, 1997Date of Patent: September 7, 1999Assignee: The Curators of the University of MissouriInventors: Kattesh V. Katti, Douglas E. Berning, Wynn A. Volkert, Alan R. Ketring, Robert Churchill
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Patent number: 5876693Abstract: A compound and method of making a compound for use as a diagnostic or therapeutic pharmaceutical comprises a functionalized hydroxyalkyl phosphine ligand and a metal combined with the ligand.Type: GrantFiled: July 30, 1997Date of Patent: March 2, 1999Assignee: The Curators of the University of MissouriInventors: Kattesh V. Katti, Prahlad R. Singh, V. Sreenivasa Reddy, Kavita K. Katti, Wynn A. Volkert, Alan R. Ketring
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Patent number: 5855867Abstract: A compound and method of making a compound for use as a diagnostic or therapeutic pharmaceutical comprises at least one functionalized hydroxyalkyl phosphine donor group and one or more sulfur or nitrogen donor and a metal combined with the ligand.Type: GrantFiled: March 14, 1997Date of Patent: January 5, 1999Assignee: The Curators of the University of MissouriInventors: Kattesh V. Katti, Srinivasa Rao Karra, Douglas E. Berning, C. Jeffrey Smith, Wynn A. Volkert, Alan R. Ketring
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Patent number: 5843993Abstract: A complex and method for making same for use as a diagnostic or therapeutic pharmaceutical includes a ligand comprising at least one hydroxyalkyl phosphine donor group bound to a gold atom to form a gold-ligand complex that is stable in aqueous solutions containing oxygen, serum and other body fluids.Type: GrantFiled: March 14, 1997Date of Patent: December 1, 1998Assignee: The Curators of the University of MissouriInventors: Kattesh V. Katti, Douglas E. Berning, Wynn A. Volkert, Alan R. Ketring
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Patent number: 5601800Abstract: A class of diagnostic and therapeutic compounds derived from phosphinimines that include ligands containing either a single phosphinimine functionality or both a phosphinimine group and a phosphine or arsine group, or an aminato group, or a second phosphinimine moiety. These phosphinimine ligands are complexed to early transition metal radionuclides (e.g. .sup.99m Tc or .sup.186 Re/.sup.188 Re) or late transition metals (e.g., .sup.105 Rh or .sup.109 Pd). The complexes with these metals .sup.186 Re/.sup.188 Re, .sup.99m Tc and .sup.109 Pd exhibit a high in vitro and high in vivo stability. The complexes are formed in high yields and can be neutral or charged. These ligands can also be used to form stable compounds with paramagnetic transition metals (e.g. Fe and Mn) for potential use as MRI contrast agents. Applications for the use of ligands and making the ligands are also disclosed.Type: GrantFiled: July 29, 1994Date of Patent: February 11, 1997Assignee: Curators of the University of MissouriInventors: Kattesh V. Katti, Wynn A. Volkert, Alan R. Ketring, Prahlad R. Singh