Patents Assigned to Quest Pharmatech, Inc.
  • Patent number: 11773183
    Abstract: The present document describes an antibody or an antigen-binding fragment that bind to O-glycan mucin-type glycoprotein MUC16 comprising three variable heavy domain complementarity determining regions (CDR)(CDR H1, H2 and H3), and three variable lighy domain CDR (CDR L1, L2 and L3). The present invention also relates to pharmaceutical compositions, nucleic acid vectors, cells comprising the nucleic acid vectors, and methods of inhibiting tumor growth of a tumor expressing O-glycan mucin-type glycoprotein MUC16.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: October 3, 2023
    Assignee: QUEST PHARMATECH INC.
    Inventors: Ragupathy Madiyalakan, Michael Hollingsworth, Prakash Radhakrishnan
  • Patent number: 8945566
    Abstract: The invention provides a method for increasing the bioactivity (e.g. the biosafety and efficacy) of a therapeutic IgE antibody of the invention in the treatment of a patient. Methods of the invention include: i) administering to the patient a therapeutic IgE antibody in combination with at least one bioactivity-enhancing agent, ii) strategic treatment regimens and protocols for the dosing and administration of a therapeutic IgE antibody of the invention, and iii) the use of a therapeutic IgE antibody having a variable region comprising at least one antigen binding region specific for binding an epitope of an antigen wherein the epitope is not highly repetitive or is non-repetitive.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: February 3, 2015
    Assignee: Quest PharmaTech, Inc.
    Inventors: Birgit C. Schultes, Christopher F. Nicodemus
  • Patent number: 8916205
    Abstract: Biodegradable polymeric nanoparticles comprising an inner core formed of a photodynamic agent capable of being activated to generate cytotoxic singlet oxygen are prepared. These nanoparticles have anti-cell proliferation activity and are useful in treating both cancerous and non-cancerous conditions including actinic keratosis, psoriasis and acne vulgaris. Preferably, the photodynamic agent is a hypocrellin B derivative while the polymeric nanoparticle comprises polyglycolic acid, polylactic acid or poly(lactide-co-glycolide). Hypocrellin-comprising nanoparticles are demonstrated to be activated by light or hydrogen peroxide.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: December 23, 2014
    Assignee: Quest Pharmatech Inc.
    Inventors: Azita Haddadi, Ragupathy Madiyalakan, Thomas Woo
  • Patent number: 8758725
    Abstract: The present invention relates to compounds which are perylenequinone derivatives, their stereoisomers and atropisomers. These compounds can be particularly useful as photosensitizers or sononsensitizers in photodynamic or sonodynamic therapy. The invention also relates to various methods for using these compounds in photodynamic and/or sonodynamic therapy. The compounds also are useful as therapeutic agents for treating various hyperproliferative disorders.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: June 24, 2014
    Assignee: Quest Pharmatech Inc.
    Inventors: Sanjay K. Sharma, Thomas Woo, Selvaraj Naicker
  • Publication number: 20140170229
    Abstract: Biodegradable polymeric nanoparticles comprising an inner core formed of a photodynamic agent capable of being activated to generate cytotoxic singlet oxygen are prepared. These nanoparticles have anti-cell proliferation activity and are useful in treating both cancerous and non-cancerous conditions including actinic keratosis, psoriasis and acne vulgaris. Preferably, the photodynamic agent is a hypocrellin B derivative while the polymeric nanoparticle comprises polyglycolic acid, polylactic acid or poly(lactide-co-glycolide). Hypocrellin-comprising nanoparticles are demonstrated to be activated by light or hydrogen peroxide.
    Type: Application
    Filed: August 11, 2011
    Publication date: June 19, 2014
    Applicant: Quest Pharmatech Inc.
    Inventors: Azita Haddadi, Ragupathy Madiyalakan, Thomas Woo
  • Patent number: 8747811
    Abstract: The present invention relates to compounds which are perylenequinone derivatives, their stereoisomers and atropisomers. These compounds can be particularly useful as photosensitizers or sononsensitizers in photodynamic or sonodynamic therapy. The invention also relates to various methods for using these compounds in photodynamic and/or sonodynamic therapy. The compounds also are useful as therapeutic agents for treating various hyperproliferative disorders.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: June 10, 2014
    Assignee: Quest Pharmatech Inc.
    Inventors: Sanjay K. Sharma, Thomas Woo, Selvaraj Naicker
  • Publication number: 20140072512
    Abstract: The present invention relates to compounds which are perylenequinone derivatives, their stereoisomers and atropisomers. These compounds can be particularly useful as photosensitizers or sononsensitizers in photodynamic or sonodynamic therapy. The invention also relates to various methods for using these compounds in photodynamic and/or sonodynamic therapy. The compounds also are useful as therapeutic agents for treating various hyperproliferative disorders.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 13, 2014
    Applicant: Quest Pharmatech, Inc.
    Inventors: Sanjay K. Sharma, Thomas Woo, Selvaraj Naicker
  • Patent number: 8506931
    Abstract: The present invention relates to compounds which are perylenequinone derivatives, their stereoisomers and atropisomers. These compounds can be particularly useful as photosensitizers or sononsensitizers in photodynamic or sonodynamic therapy. The invention also relates to various methods for using these compounds in photodynamic and/or sonodynamic therapy. The compounds also are useful as therapeutic agents for treating various hyperproliferative disorders.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: August 13, 2013
    Assignee: Quest Pharmatech Inc.
    Inventors: Sanjay K. Sharma, Thomas Woo, Selvaraj Naicker
  • Patent number: 8038994
    Abstract: Disclosed are methods for treating cancer comprising administering a xenotypic antibody and a chemotherapeutic drug to a patient suffering from cancer. Also disclosed is a method for inducing a host immune response in a patient against a multi-epitopic in vivo tumor antigen present in the host serum, which antigen does not elicit an effective host immune response, comprising administering to the patient a chemotherapeutic drug and a composition comprising a binding agent that specifically binds to a first epitope on the antigen and allowing the binding agent to form a binding agent/antigen pair, wherein an effective host immune response is elicited against a second epitope on the antigen.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: October 18, 2011
    Assignee: Quest Pharmatech Inc.
    Inventors: Birgit C. Schultes, Christopher F. Nicodemus, Antoine A. Noujaim, Ragupathy Madiyalakan
  • Publication number: 20100262115
    Abstract: The present invention is directed to nanoparticles comprising a cancer therapeutic, pharmaceutical compositions comprising same, and methods for using same for drug delivery and ultrasound or light-based treatment of cancer.
    Type: Application
    Filed: April 7, 2010
    Publication date: October 14, 2010
    Applicants: INTELLIGENTNANO INC., QUEST PHARMATECH INC.
    Inventors: Ragupathy MADIYALAKAN, James XING, Thomas WOO, Eric SWANSON
  • Publication number: 20100047178
    Abstract: The present invention relates to compounds which are perylenequinone derivatives, their stereoisomers and atropisomers. These compounds can be particularly useful as photosensitizers or sononsensitizers in photodynamic or sonodynamic therapy. The invention also relates to various methods for using these compounds in photodynamic and/or sonodynamic therapy. The compounds also are useful as therapeutic agents for treating various hyperproliferative disorders.
    Type: Application
    Filed: July 28, 2006
    Publication date: February 25, 2010
    Applicant: QUEST PHARMATECH INC.
    Inventors: Sanjay K. Sharma, Thomas Woo, Selvaraj Naicker
  • Patent number: 7659244
    Abstract: The present invention relates to new rapamycin derivatives for the inhibition of cell proliferation. The compounds can advantageously target two proteins in dividing cells and interfere with cell cycle. There is thus provided derivatives of rapamycin in which the 42 position of rapamycin is linked to an amino acid or a peptide through a carbamate ester linkage. These rapamycin derivatives can be synthesized by reacting 42-O-(4-Nitrophenoxycarbonyl) rapamycin and an amino acid or a free amino peptide under basic conditions. These rapamycin derivatives can be used to inhibit the cell cycle and are therefore useful for treating cell proliferation disorders.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: February 9, 2010
    Assignee: Quest Pharmatech, Inc.
    Inventors: Sanjay K. Sharma, Thomas Woo, Selvaraj Naicker
  • Publication number: 20090204057
    Abstract: The present invention relates to a photodynamic therapy method and uses thereof for treating an individual in need thereof, comprising administering a photosensitizer to an individual and activating the photosensitizer with a chemiluminescent light source, and/or a light-emitting diode light source, wherein the light source is in dermal contact with the individual. The present invention also relates to a device for photodynamic therapy comprising a permeable reservoir, for containing a photosensitizer formulation for skin application, the device is adapted to deliver the photosensitizer to the individual. The present invention also relates to a device for photodynamic therapy, comprising a permeable reservoir for containing a photosensitizer formulation for skin application and a light source.
    Type: Application
    Filed: July 17, 2007
    Publication date: August 13, 2009
    Applicant: QUEST PHARMATECH INC.
    Inventors: Thomas Woo, Gerald George Miller, Ragupathy Madiyalakan