Patents by Inventor Richard E. Showalter

Richard E. Showalter 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: 20240084282
    Abstract: Provided are modified arginine deiminase (ADI) proteins, including ADI proteins that comprise one or more substitutions which increase expression in bacteria as insoluble and refoldable inclusion bodies. Also provided are methods of producing the modified ADI proteins, compositions comprising the ADI proteins, and related methods of treating arginine-dependent and related diseases such as cancer.
    Type: Application
    Filed: August 31, 2023
    Publication date: March 14, 2024
    Inventors: Richard E. Showalter, Robert J. Almassy, James A. Thomson, Wes Sisson, Wei-Jong Shia, Li-Chang (Jason) Chen, Derek Lee
  • Publication number: 20220105160
    Abstract: The present invention relates generally to isolated to arginine deiminase (ADI) proteins that have reduced cross-reactivity with anti-ADI-PEG 20 antibodies as compared to ADI-PEG 20, but which can have functional characteristics comparable to or better than ADI-PEG 20, compositions comprising the ADI proteins, and related methods of treating arginine-dependent diseases or related diseases such as cancer.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 7, 2022
    Inventors: Robert ALMASSY, Richard E. SHOWALTER, James A. THOMSON, Wes SISSON, Wei-Jong SHIA, Li-Chang CHEN, Yang LEE
  • Patent number: 11235037
    Abstract: The present invention relates generally to isolated to arginine deiminase (ADI) proteins that have reduced cross-reactivity with anti-ADI-PEG 20 antibodies as compared to ADI-PEG 20 (pegylated ADI derived from M. hominis), but which can have functional characteristics comparable to or better than ADI-PEG 20, compositions comprising the ADI proteins, and related methods of treating arginine-dependent diseases or related diseases such as cancer.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: February 1, 2022
    Assignee: Polaris Group
    Inventors: Robert Almassy, Richard E. Showalter, James A. Thomson, Wes Sisson, Wei-Jong Shia, Li-Chang Chen, Yang Lee
  • Patent number: 10463721
    Abstract: Provided are chimeric arginine deiminases, including pegylated chimeric arginine deiminases, and related compositions and methods of use thereof, including methods of treating cancer.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: November 5, 2019
    Assignee: TDW Group
    Inventors: Bor-Wen Wu, Robert Almassy, Wei He, Richard E. Showalter, Jiaojuan He, Yunyun Guo, James A. Thomson
  • Publication number: 20180296690
    Abstract: Provided are conjugates of an arginine deiminase (ADI) and a Tumor Necrosis Factor (TNF) superfamily ligand, and related compositions and methods of use thereof. Also provided are conjugates of a hexameric polypeptide and a trimeric polypeptide, conjugates of a first and second trimeric polypeptide, and related compositions and methods of use thereof.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 18, 2018
    Inventors: Elena BRIN, Robert J. ALMASSY, Richard E. SHOWALTER, James A. THOMSON
  • Publication number: 20170000862
    Abstract: Provided are chimeric arginine deiminases, including pegylated chimeric arginine deiminases, and related compositions and methods of use thereof, including methods of treating cancer.
    Type: Application
    Filed: March 18, 2015
    Publication date: January 5, 2017
    Inventors: Bor-Wen Wu, Robert Almassy, Wei He, Richard E. Showalter, Jiaojuan He, Yunyun Guo, James A. Thomson
  • Publication number: 20140348814
    Abstract: The present invention relates generally to isolated to arginine deiminase (ADI) proteins that have reduced cross-reactivity with anti-ADI-PEG 20 antibodies as compared to ADI-PEG 20, but which can have functional characteristics comparable to or better than ADI-PEG 20, compositions comprising the ADI proteins, and related methods of treating arginine-dependent diseases or related diseases such as cancer.
    Type: Application
    Filed: March 14, 2014
    Publication date: November 27, 2014
    Applicant: Polaris Group
    Inventors: Robert Almassy, Richard E. Showalter, James A. Thomson, Wes Sisson, Wei-Jong Shia, Li-Chang Chen, Yang Lee
  • Patent number: 6849721
    Abstract: A 2.4 ? crystal structure of a protein construct containing the catalytic kinase domain of vascular endothelial growth factor receptor 2 (VEGFR2/KDR), a key enzyme in angiogenesis, has been determined in an unliganded, phosphorylated state. This protein construct, contains a modified catalytic linker and has comparable in vitro kinase activity to constructs containing the entire KID. The resulting construct retains comparable in vitro kinase activity to that of the wild-type KID, and more importantly, allows complete crystallization of the protein such that it may be characterized by X-ray crystallography. The present invention further discloses the use of the x-ray crystallographic data for identification and construction of possible therapeutic compounds in the treatment of various disease conditions.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: February 1, 2005
    Assignee: Agouron Pharmaceuticals, Inc.
    Inventors: Michele A. McTigue, Chris Pinko, Camran V. Parast, Michael R. Gehring, Chen-Chen Kan, Krzysztof Appelt, John A. Wickersham, Richard E. Showalter, Anna M. Tempcyzk-Russell, Barbara Mroczkowski, Jesus E. Villafranca
  • Patent number: 6794146
    Abstract: A 2.4 Å crystal structure of a protein construct containing the catalytic kinase domain of vascular endothelial growth factor receptor 2 (VEGFR2/KDR), a key enzyme in angiogenesis, has been determined in an unliganded, phosphorylated state. This protein construct, contains a modified catalytic linker and has comparable in vitro kinase activity to constructs containing the entire KID. The resulting construct retains comparable in vitro kinase activity to that of the wild-type KID, and more importantly, allows complete crystallization of the protein such that it may be characterized by X-ray crystallography. The present invention further discloses the use of ray crystallographic data for identification and construction of possible therapeutic compounds in the treatment of various disease conditions.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: September 21, 2004
    Assignee: Agouron Pharmaceuticals, Inc.
    Inventors: Michele A. McTigue, Chris Pinko, Camran V. Parast, Michael R. Gehring, Chen-Chen Kan, Krzysztof Appelt, John A. Wickersham, Richard E. Showalter, Anna M. Tempcyzk-Russell, Barbara Mroczkowski, Jesus E. Villafranca
  • Patent number: 6784285
    Abstract: A 2.4 Å crystal structure of a protein construct containing the catalytic kinase domain of vascular endothelial growth factor receptor 2 (VEGFR2/KDR), a key enzyme in angiogenesis, has been determined in an unliganded, phosphorylated state. This protein construct, contains a modified catalytic linker and has comparable in vitro kinase activity to constructs containing the entire KID. The resulting construct retains comparable in vitro kinase activity to that of the wild-type KID, and more importantly, allows complete crystallization of the protein such that it may be characterized by X-ray crystallography. The present invention further discloses the use of x-ray crystallographic data for identification and construction of possible therapeutic compounds in the treatment of various disease conditions.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: August 31, 2004
    Assignee: Agouron Pharmaceuticals, Inc.
    Inventors: Michele A. McTigue, Chris Pinko, Camran V. Parast, Michael R. Gehring, Chen-Chen Kan, Krzysztof Appelt, John A. Wickersham, Richard E. Showalter, Anna M. Tempcyzk-Russell, Barbara Mroczkowski, Jesus E. Villafranca
  • Patent number: 6753416
    Abstract: A 2.4 Å crystal structure of a protein construct containing the catalytic kinase domain of vascular endothelial growth factor receptor 2 (VEGFR2/KDR), a key enzyme in angiogenesis, has been determined in an unliganded, phosphorylated state. This protein construct, contains a modified catalytic linker and has comparable in vitro kinase activity to constructs containing the entire KID. The resulting construct retains comparable in vitro kinase activity to that of the wild-type KID, and more importantly, allows complete crystallization of the protein such that it may be characterized by X-ray crystallography. The present invention further discloses the use of x-ray crystallographic data for identification and construction of possible therapeutic compounds in the treatment of various disease conditions.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: June 22, 2004
    Assignee: Agouron Pharmaceuticals, Inc.
    Inventors: Michele A. McTigue, Chris Pinko, Camran V. Parast, Michael R. Gehring, Chen-Chen Kan, Krzysztof Appelt, John A. Wickersham, Richard E. Showalter, Anna M. Tempcyzk-Russell, Barbara Mroczkowski, Jesus E. Villafranca
  • Publication number: 20020164641
    Abstract: A 2.4 Å crystal structure of a protein construct containing the catalytic kinase domain of vascular endothelial growth factor receptor 2 (VEGFR2/KDR), a key enzyme in angiogenesis, has been determined in an unliganded, phosphorylated state. This protein construct, contains a modified catalytic linker and has comparable in vitro kinase activity to constructs containing the entire KID. The resulting construct retains comparable in vitro kinase activity to that of the wild-type KID, and more importantly, allows complete crystallization of the protein such that it may be characterized by X-ray crystallography. The present invention further discloses the use of x-ray crystallographic data for identification and construction of possible therapeutic compounds in the treatment of various disease conditions.
    Type: Application
    Filed: August 28, 2001
    Publication date: November 7, 2002
    Applicant: Agouron Pharamceuticals, Inc.
    Inventors: Michele A. McTigue, Chris Pinko, Camran V. Parast, Michael R. Gehring, Chen-Chen Kan, Krzysztof Appelt, John A. Wickersham, Richard E. Showalter, Anna M. Tempcyzk-Russell, Barbara Mroczkowski, Jesus E. Villafranca
  • Publication number: 20020127538
    Abstract: A 2.4 Å crystal structure of a protein construct containing the catalytic kinase domain of vascular endothelial growth factor receptor 2 (VEGFR2/KDR), a key enzyme in angiogenesis, has been determined in an unliganded, phosphorylated state. This protein construct, contains a modified catalytic linker and has comparable in vitro kinase activity to constructs containing the entire KID. The resulting construct retains comparable in vitro kinase activity to that of the wild-type KID, and more importantly, allows complete crystallization of the protein such that it may be characterized by X-ray crystallography. The present invention further discloses the use of x-ray crystallographic data for identification and construction of possible therapeutic compounds in the treatment of various disease conditions.
    Type: Application
    Filed: August 28, 2001
    Publication date: September 12, 2002
    Applicant: Agouron Pharamceuticals, Inc.
    Inventors: Michele A. McTigue, Chris Pinko, Camran V. Parast, Michael R. Gehring, Chen-Chen Kan, Krzysztof Appelt, John A. Wickersham, Richard E. Showalter, Anna M. Tempcyzk-Russell, Barbara Mroczkowski, Jesus E. Villafranca
  • Publication number: 20020051965
    Abstract: A 2.4 Å crystal structure of a protein construct containing the catalytic kinase domain of vascular endothelial growth factor receptor 2 (VEGFR2/KDR), a key enzyme in angiogenesis, has been determined in an unliganded, phosphorylated state. This protein construct, contains a modified catalytic linker and has comparable in vitro kinase activity to constructs containing the entire KID. The resulting construct retains comparable in vitro kinase activity to that of the wild-type KID, and more importantly, allows complete crystallization of the protein such that it may be characterized by X-ray crystallography. The present invention further discloses the use of x-ray crystallographic data for identification and construction of possible therapeutic compounds in the treatment of various disease conditions.
    Type: Application
    Filed: August 28, 2001
    Publication date: May 2, 2002
    Applicant: Agouron Pharamceuticals, Inc.
    Inventors: Michele A. McTigue, Chris Pinko, Camran V. Parast, Michael R. Gehring, Chen-Chen Kan, Krzysztof Appelt, John A. Wickersham, Richard E. Showalter, Anna M. Tempcyzk-Russell, Barbara Mroczkowski, Jesus E. Villafranca
  • Patent number: 6316603
    Abstract: A 2.4 Å crystal structure of a protein construct containing the catalytic kinase domain of vascular endothelial growth factor receptor 2 (VEGFR2/KDR), a key enzyme in angiogenesis, has been determined in an unliganded, phosphorylated state. This protein construct, contains a modified catalytic linker and has comparable in vitro kinase activity to constructs containing the entire KID. The resulting construct retains comparable in vitro kinase activity to that of the wild-type KID, and more importantly, allows complete crystallization of the protein such that it may be characterized by X-ray crystallography. The present invention further discloses the use of x-ray crystallographic data for identification and construction of possible therapeutic compounds in the treatment of various disease conditions.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: November 13, 2001
    Assignee: Agouron Pharmaceuticals, Inc.
    Inventors: Michele A. McTigue, Chris Pinko, Camran V. Parast, Michael R. Gehring, Chen-Chen Kan, Krzysztof Appelt, John A. Wickersham, Richard E. Showalter, Anna M. Tempcyzk-Russell, Barbara Mroczkowski, Jesus E. Villafranca