Patents Assigned to Genspera, Inc.
  • Publication number: 20160347706
    Abstract: Provided herein are methods of making the compound of Formula I: and certain intermediates involved in such process.
    Type: Application
    Filed: August 9, 2016
    Publication date: December 1, 2016
    Applicant: Genspera, Inc.
    Inventors: John K. Lynch, Jeff Hutchison, Xiong Fu, Kevin Kunnen
  • Publication number: 20160347730
    Abstract: Provided herein are methods of making the compound of Formula I: and certain intermediates involved in such process.
    Type: Application
    Filed: August 9, 2016
    Publication date: December 1, 2016
    Applicant: Genspera, Inc.
    Inventors: John K. Lynch, Jeff Hutchison, Xiong Fu, Kevin Kunnen
  • Patent number: 9446141
    Abstract: Provided herein are methods of making the compound of Formula I: and certain intermediates involved in such process.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: September 20, 2016
    Assignee: GenSpera, Inc.
    Inventors: John K Lynch, Jeff Hutchison, Xiong Fu, Kevin Kunnen
  • Publication number: 20160030589
    Abstract: Provided is a method for making the compound of Formula 1: Various compounds utilized in that method are also provided, as are methods of making those compounds. Also provided is a compound having the formula XO—CO—(CH2)nNH2, where n is an integer greater than 2. A method of making that compound is additionally provided. Further provided is a method of making a prodrug of a bioactive compound.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 4, 2016
    Applicant: Genspera, Inc.
    Inventors: John K Lynch, Jeff Hutchison, Xiong Fu, Kevin Kunnen
  • Publication number: 20150265572
    Abstract: Provided herein are therapeutic prodrug compositions which may be delivered to a patient via an injectable emulsion, comprising a therapeutic drug linked to a peptide that is efficiently and specifically cleaved by a selected protease associated with a cell proliferative disorder, including cancer cells, for example, prostate, liver or breast cancer cells, in a patient. Also provided herein are methods of treating cell proliferative disorders, including cancers, with the therapeutic prodrug compositions.
    Type: Application
    Filed: October 14, 2013
    Publication date: September 24, 2015
    Applicant: GENSPERA, INC.
    Inventors: Andrew X Chen, Yali Tsai
  • Publication number: 20150238460
    Abstract: Provided herein are methods of treating subjects having tumors. For example, the invention relates to a method for treating subjects having hepatocellular carcinoma by administering an effective amount of a therapeutic prodrug.
    Type: Application
    Filed: August 23, 2013
    Publication date: August 27, 2015
    Applicant: GENSPERA, INC.
    Inventor: Devalingam Mahalingam
  • Patent number: 8822406
    Abstract: The instant invention provides compositions comprising a prodrug, the prodrug comprising a therapeutically active drug; and a peptide selected from the group consisting of the sequences: Ser-Ser-Lys-Tyr-Gln (SEQ ID NO:1); Gly-Lys-Ser-Gln-Tyr-Gln (SEQ ID NO:2); and Gly-Ser-Ala-Lys-Tyr-Gln (SEQ ID NO:3) wherein the peptide is linked to the therapeutically active drug to inhibit the therapeutic activity of the drug, and wherein the therapeutically active drug is cleaved from the peptide upon proteolysis by an enzyme having a proteolytic activity of prostate specific antigen (PSA). The invention further provides methods of making and using the claimed compositions.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: September 2, 2014
    Assignee: GenSpera, Inc.
    Inventors: Samuel R. Denmeade, John T. Isaacs
  • Patent number: 8669231
    Abstract: The invention provides novel peptide prodrugs that contain cleavage sites specifically cleaved by human kallikrein 2 (hK2). These prodrugs are useful for substantially inhibiting the non-specific toxicity of a variety of therapeutic drugs. Upon cleavage of the prodrug by hK2, the therapeutic drugs are activated and exert their toxicity. Methods for treating cell proliferative disorders are also featured in the invention.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: March 11, 2014
    Assignee: GenSpera, Inc.
    Inventors: Samuel R. Denmeade, John Tod Isaacs, Hans Lilja
  • Patent number: 7906477
    Abstract: The invention provides novel peptide prodrugs that contain cleavage sites specifically cleaved by human kallikrein 2 (hK2). These prodrugs are useful for substantially inhibiting the non-specific toxicity of a variety of therapeutic drugs. Upon cleavage of the prodrug by hK2, the therapeutic drugs are activated and exert their toxicity. Methods for treating cell proliferative disorders are also featured in the invention.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: March 15, 2011
    Assignee: Genspera, Inc.
    Inventors: Samuel R. Denmeade, John T. Isaacs, Hans Lilja
  • Patent number: 7767648
    Abstract: The invention provides novel peptide prodrugs which contain cleavage sites specifically cleaved by prostate specific membrane antigen (PSMA). These prodrugs are useful for substantially inhibiting the non-specific toxicity of a variety of therapeutic drugs. PSMA is secreted by prostatic glandular cells. Upon cleavage of the prodrug by PSMA, the therapeutic drugs are activated and exert their toxicity. Sesquiterpene-?-lactones form part of the prodrugs, and are designed to be linked to carrier moieties such as the peptides of the invention. Methods for treating cell proliferative disorders are also featured in the invention.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: August 3, 2010
    Assignee: Genspera, Inc.
    Inventors: John Tod Isaacs, Samuel R. Denmeade
  • Patent number: 7635682
    Abstract: The instant invention provides compositions comprising a prodrug, the prodrug comprising a therapeutically active drug; and a peptide selected from the group consisting of the sequences: Ser-Ser-Lys-Tyr-Gln (SEQ ID NO:1);Gly-Lys-Ser-Gln-Tyr-Gln (SEQ ID NO:2); and Gly-Ser-Ala-Lys-Tyr-Gln (SEQ ID NO:3) wherein the peptide is linked to the therapeutically active drug to inhibit the therapeutic activity of the drug, and wherein the therapeutically active drug is cleaved from the peptide upon proteolysis by an enzyme having a proteolytic activity of prostate specific antigen (PSA). The invention further provides methods of making and using the claimed compositions.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: December 22, 2009
    Assignee: Genspera, Inc.
    Inventors: Samuel R. Denmeade, John T. Isaacs
  • Publication number: 20090163426
    Abstract: The invention provides novel peptide prodrugs which contain cleavage sites specifically cleaved by prostate specific membrane antigen (PSMA). These prodrugs are useful for substantially inhibiting the non-specific toxicity of a variety of therapeutic drugs. PSMA is secreted by prostatic glandular cells. Upon cleavage of the prodrug by PSMA, the therapeutic drugs are activated and exert their toxicity. Sesquiterpene-?-lactones form part of the prodrugs, and are designed to be linked to carrier moieties such as the peptides of the invention. Methods for treating cell proliferative disorders are also featured in the invention.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 25, 2009
    Applicant: GENSPERA, INC.
    Inventors: John Todd Isaacs, Samuel R. Denmeade
  • Patent number: 7468354
    Abstract: The invention provides novel peptide prodrugs which contain cleavage sites specifically cleaved by prostate specific membrane antigen (PSMA). These prodrugs are useful for substantially inhibiting the non-specific toxicity of a variety of therapeutic drugs. PSMA is secreted by prostatic glandular cells. Upon cleavage of the prodrug by PSMA, the therapeutic drug are activated and exert their toxicity. Sesquiterpene-?-lactones form part of the prodrugs, and are designed to be linked to carrier moieties such as the peptides of the invention. Methods for treating cell proliferative disorders are also featured in the invention.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: December 23, 2008
    Assignee: Genspera, Inc.
    Inventors: John T. Isaacs, Samuel R. Denmeade
  • Publication number: 20080247950
    Abstract: The invention provides novel peptide prodrugs that contain cleavage sites specifically cleaved by human kallikrein 2 (hK2). These prodrugs are useful for substantially inhibiting the non-specific toxicity of a variety of therapeutic drugs. Upon cleavage of the prodrug by hK2, the therapeutic drugs are activated and exert their toxicity. Methods for treating cell proliferative disorders are also featured in the invention.
    Type: Application
    Filed: March 15, 2007
    Publication date: October 9, 2008
    Applicant: Genspera, Inc.
    Inventors: Samuel R. Denmeade, John T. Isaacs, Hans Lilja