Patents by Inventor Sumith A. Kularatne

Sumith A. Kularatne 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: 20170258923
    Abstract: Described herein are prostate specific membrane antigen (PSMA) binding conjugates that are useful for delivering therapeutic, diagnostic and imaging agents. Also described herein are pharmaceutical composition containing them and methods of using the conjugates and compositions. Also described are processes for manufacture of the conjugates and the compositions containing them.
    Type: Application
    Filed: May 26, 2017
    Publication date: September 14, 2017
    Inventors: Philip S. LOW, Sumith A. KULARATNE
  • Publication number: 20170232119
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods and compositions for incorporating the compounds as used for the targeted imaging of non-small cell lung cancer (NSCLC) in human subjects. Conjugation of the amino acid linking groups increase specificity and detection of the compound. Methods and compositions for use thereof in diagnostic imaging are contemplated.
    Type: Application
    Filed: May 2, 2017
    Publication date: August 17, 2017
    Inventors: Sumith A. Kularatne, Sunil Singhal
  • Publication number: 20170145035
    Abstract: The present invention describes new compounds that are useful for image-guided surgery and photodynamic therapy. In particular the compounds may be targeted to the nucleus or the mitochondria after compounds were delivered to diseased tissues such as cancer using a ligand that target receptor that express on the diseased tissue and followed by receptor mediated endocytosis and provide effective activity against cancer cells as well as other disorders. Methods and compositions for use of the same are described.
    Type: Application
    Filed: September 6, 2016
    Publication date: May 25, 2017
    Inventors: Sumith A. Kularatne, Pravin Gagare, Carrie H. Mayers
  • Publication number: 20170066719
    Abstract: The present disclosure relates to prostate specific membrane antigen (PSMA) targeted compounds conjugated to near-infra red (NIR) dyes and methods for their therapeutic and diagnostic use. More specifically, this disclosure provides compounds and methods for diagnosing and treating diseases associated with cells and/or vasculature expressing prostate specific membrane antigen (PSMA), such as prostate cancer and related diseases. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds.
    Type: Application
    Filed: November 12, 2015
    Publication date: March 9, 2017
    Inventors: Sumith A. Kularatne, Philip S. Low, Pravin Gagare, Carrie Myers
  • Publication number: 20170065729
    Abstract: The present disclosure relates to prostate specific membrane antigen (PSMA) targeted compounds conjugated to near-infra red (NIR) dyes and methods for their therapeutic and diagnostic use. More specifically, this disclosure provides compounds and methods for diagnosing and treating diseases associated with cells and/or vasculature expressing prostate specific membrane antigen (PSMA), such as prostate cancer and related diseases. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds.
    Type: Application
    Filed: November 10, 2015
    Publication date: March 9, 2017
    Inventors: Sumith A. Kularatne, Philip S. Low, Pravin Gagare, Carrie Myers
  • Publication number: 20160375153
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods and compositions for incorporating the compounds as used for the targeted imaging of tumors. Conjugation of the amino acid linking groups increase specificity and detection of the compound. Methods and compositions for use thereof in diagnostic imaging are contemplated.
    Type: Application
    Filed: September 8, 2016
    Publication date: December 29, 2016
    Inventor: Sumith A. Kularatne
  • Publication number: 20160339122
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds.
    Type: Application
    Filed: November 30, 2015
    Publication date: November 24, 2016
    Inventor: Sumith A. Kularatne
  • Publication number: 20160151508
    Abstract: Described herein are prostate specific membrane antigen (PSMA) binding conjugates that are useful for delivering therapeutic, diagnostic and imaging agents. Also described herein are pharmaceutical compositions containing them and methods of using the conjugates and compositions. Also described are processes for manufacture of the conjugates and the compositions containing them.
    Type: Application
    Filed: February 8, 2016
    Publication date: June 2, 2016
    Inventors: Philip Stewart Low, Venkatesh Chelvam, Youngsoon Kim, Sumith A. Kularatne
  • Patent number: 9341629
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: May 17, 2016
    Assignee: Purdue Research Foundation
    Inventors: Sumith A. Kularatne, Sakkarapalayam M. Mahalingam, Philip S. Low
  • Patent number: 9333270
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: May 10, 2016
    Assignee: Purdue Research Foundation
    Inventors: Philip S. Low, Sumith A. Kularatne, Sakkarapalayam M. Mahalingam
  • Publication number: 20160067341
    Abstract: Described herein are prostate specific membrane antigen (PSMA) binding conjugates that are useful for delivering therapeutic, diagnostic and imaging agents. Also described herein are pharmaceutical composition containing them and methods of using the conjugates and compositions. Also described are processes for manufacture of the conjugates and the compositions containing them.
    Type: Application
    Filed: November 23, 2015
    Publication date: March 10, 2016
    Inventors: Philip S. LOW, Sumith A. KULARATNE
  • Patent number: 9279813
    Abstract: The invention relates to a method for diagnosing a disease state mediated by pathogenic cells. The method comprises the steps of combining with an ex vivo patient sample a composition comprising a conjugate or complex of the general formula Ab-X wherein the group Ab comprises a ligand that binds to the pathogenic cells and the group X comprises an imaging agent, and detecting the pathogenic cells that express a receptor for the ligand using flow cytometry.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: March 8, 2016
    Assignee: Purdue Research Foundation
    Inventors: Philip Stewart Low, Wei He, Sumith A. Kularatne
  • Patent number: 9254341
    Abstract: The present invention discloses a process for preparing a compound having the formula Including Reacting a compound of the formula 1: with a compound of the formula: in the presence of a polar solvent and trifluoroacetic acid to provide a compound of the formula: or a racemic mixture thereof; and further reacting the compound of the formula: or a racemic mixture thereof; with sodium hydroxide and a compound of the formula: wherein R1 and R2 are as defined above.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: February 9, 2016
    Inventors: Sumith A. Kularatne, Pravin Gagare, Mohammad Noshi
  • Publication number: 20160011199
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds.
    Type: Application
    Filed: May 19, 2015
    Publication date: January 14, 2016
    Inventors: Sumith A. Kularatne, Sakkarapalayam M. Mahalingam, Philip S. Low
  • Patent number: 9233175
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods of imaging of inflammatory diseases using the compounds.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: January 12, 2016
    Assignee: Purdue Research Foundation
    Inventors: Philip S. Low, Sumith A. Kularatne, Lindsay E. Kelderhouse, Sakkarapalayam M. Mahalingam
  • Patent number: 9193763
    Abstract: Described herein are prostate specific membrane antigen (PSMA) binding conjugates that are useful for delivering therapeutic, diagnostic and imaging agents. Also described herein are pharmaceutical composition containing them and methods of using the conjugates and compositions. Also described are processes for manufacture of the conjugates and the compositions containing them.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: November 24, 2015
    Assignee: Purdue Research Foundation
    Inventors: Philip Stewart Low, Sumith A. Kularatne
  • Patent number: 9180215
    Abstract: Described herein are compositions and methods for diagnosing and/or monitoring pathogenic disease states using positron emission tomography, wherein the pathogenic cells uniquely express, preferentially express, or overexpress vitamin receptors. Also described herein are 18F conjugates of vitamins and vitamin receptor-binding analogs and derivatives.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: November 10, 2015
    Assignee: Purdue Research Foundation
    Inventors: Philip S. Low, Sumith A. Kularatne
  • Patent number: 9061057
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 23, 2015
    Assignee: Purdue Research Foundation
    Inventors: Sumith A. Kularatne, Sakkarapalayam M. Mahalingam, Philip S. Low
  • Patent number: 8907058
    Abstract: Described herein are prostate specific membrane antigen (PSMA) binding conjugates that are useful for delivering therapeutic, diagnostic and imaging agents. Also described herein are pharmaceutical composition containing them and methods of using the conjugates and compositions. Also described are processes for manufacture of the conjugates and the compositions containing them.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 9, 2014
    Assignee: Purdue Research Foundation
    Inventors: Philip S. Low, Sumith A. Kularatne
  • Publication number: 20140271484
    Abstract: The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a pteroyl ligand that binds to a target receptor protein, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid or derivative thereof. The disclosure further describes methods of imaging of inflammatory diseases using the compounds.
    Type: Application
    Filed: December 19, 2013
    Publication date: September 18, 2014
    Applicant: Purdue Research Foundation
    Inventors: Philip S. Low, Sumith A. Kularatne, Lindsay E. Kelderhouse