Patents Assigned to Helix BioPharma Corp.
  • Patent number: 11466088
    Abstract: Compositions and methods for treating cancer in humans are provided using CARs. The invention includes engineered CARs (chimeric receptor antigens) and genetically modified immune cells that express such a CAR with a high affinity for VEGFR. More specifically, the cells are CAR-T cells recognizing VEGFR-2 on solid tumors, uses thereof, compositions thereof and methods of making. The invention includes therapeutic methods to treat VEGFR-2 dependent cancers targeting tumor angiogenesis. A chimeric antigen receptor (CAR) that binds to VEGFR-2, an epitope or fragment thereof, or a variant thereof.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: October 11, 2022
    Assignee: Helix BioPharma Corp.
    Inventors: Heman Lap Man Chao, Wah Yau Wong, Baomin Tian, Marni Diane Uger
  • Patent number: 10640806
    Abstract: Methods and compositions to restore function to acidified T cells are provided. The methods comprise administering urease to the T cells. Compositions comprise urease.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: May 5, 2020
    Assignee: Helix BioPharma Corp.
    Inventors: Wah Yau Wong, Baomin Tian, Kim Gaspar, Marni Diane Uger, Sven Rohmann, Heman Lap Man Chao
  • Patent number: 10316311
    Abstract: This disclosure provides antibody-urease conjugates having therapeutic and diagnostic utility. More specifically, the disclosure relates to diagnostic and/or therapeutic conjugates that are prepared by conjugating one or more whole antibodies to urease.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: June 11, 2019
    Assignee: Helix Biopharma Corp.
    Inventor: Heman Chao
  • Publication number: 20160138002
    Abstract: This disclosure provides antibody-urease conjugates having therapeutic and diagnostic utility. More specifically, the disclosure relates to diagnostic and/or therapeutic conjugates that are prepared by conjugating one or more whole antibodies to ease.
    Type: Application
    Filed: April 3, 2014
    Publication date: May 19, 2016
    Applicant: HELIX BIOPHARMA CORP.
    Inventor: Heman Chao
  • Patent number: 9296819
    Abstract: Human prion protein, PrP, selectively presents the epitope MDEYSNQNN (SEQ ID No. 14) when PrP misfolds. The misfolded form of human PrP is associated with various disease states. The present invention provides an antibody useful to detect and treat such diseases, including cancer such as ovarian cancer and lymphomas, and transmissible spongiform encephalopathies such as CJD. Also provided is an immunoconjugate in which the antibody is conjugated with urease as cytotoxin.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: March 29, 2016
    Assignees: ProMIS Neurosciences Inc., Helix BioPharma Corp.
    Inventors: Marni Diane Uger, Viengthong Chai, Veronica Ciolfi, Neil R. Cashman, Baomin Tian, Wah Yau Wong, Heman Lap-Man Chao
  • Publication number: 20130224283
    Abstract: A biphasic lipid vesicle composition for treating cervical displasia by intravaginal delivery. The composition includes a suspension of lipid-bilayer vesicles having entrapped therein, an oil-in-water emulsion, human interferon alpha-2b and L-methionine, the composition having an interferon alpha-2b specific activity of between about 1-10 MIU (million international units) per gram composition, and between 0.01 to 0.5 weight percent L-methionine. In the treatment method, the composition is administered at a dose of between about 1-20 MIU interferon alpha-2b, and this dose is administered at least 3 days/week, for a period of at least 4 weeks.
    Type: Application
    Filed: March 22, 2013
    Publication date: August 29, 2013
    Applicant: HELIX BIOPHARMA CORP.
    Inventors: Marianna FOLDVARI, Praveen KUMAR, John M. DOCHERTY
  • Publication number: 20130216610
    Abstract: A biphasic lipid vesicle composition for treating cervical displasia by intravaginal delivery. The composition includes a suspension of lipid-bilayer vesicles having entrapped therein, an oil-in-water emulsion, human interferon alpha-2b and L-methionine, the composition having an interferon alpha-2b specific activity of between about 1-10 MIU (million international units) per gram composition, and between 0.01 to 0.5 weight percent L-methionine. In the treatment method, the composition is administered at a dose of between about 1-20 MIU interferon alpha-2b, and this dose is administered at least 3 days/week, for a period of at least 4 weeks.
    Type: Application
    Filed: March 22, 2013
    Publication date: August 22, 2013
    Applicant: Helix BioPharma Corp.
    Inventors: Marianna FOLDVARI, Praveen KUMAR, John M. DOCHERTY