Patents by Inventor Andre Choo

Andre Choo 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: 20240132595
    Abstract: The invention relates to antigen-binding molecules that specifically bind to MHC Class I DLA-12 antigen. In one embodiment, the antigen-binding molecule is an antibody that specifically binds to canine MHC Class I DLA-12 antigen. Chimeric molecules of the antibody conjugated to another heterologous moiety are also provided. In one embodiment, the heterologous moiety is monomethyl auristatin E (MMAE). A method of inhibiting cancer using the antibody or the chimeric molecule thereof is also provided. In another embodiment, the antibody-MMAE conjugate suppresses tumour development in a murine model of B cell lymphoma.
    Type: Application
    Filed: January 28, 2022
    Publication date: April 25, 2024
    Applicant: Agency for Science, Technology and Research
    Inventors: Chui Ping Angela CHIN, Boon Hwa Andre CHOO, Wey Jia FONG, Mei Yee Vanessa DING
  • Patent number: 11512292
    Abstract: An antibody that binds a glycosylated protein is disclosed, wherein the glycosylation comprises the glycan motif Fuc?1-2Gal?1-3GlcNAc?1-3Gal?1 or Fuc?1-2Gal?1-3GlcNAc. Antibodies that are cytotoxic against undifferentiated pluripotent cells are also disclosed.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: November 29, 2022
    Assignee: Agency for Science, Technology and Research
    Inventors: Boon Hwa Andre Choo, Jiyun Zheng
  • Patent number: 11306153
    Abstract: The present invention relates to antigen-binding proteins, or antigen-binding fragments thereof that bind to a glycan on the AXL receptor tyrosine kinase. The present invention also relates to antigen-binding proteins, or antigen-binding fragment conjugated to a radioisotope or cytotoxin, and wherein said antigen-binding proteins, or antigen-binding fragment is internalised into a cell upon binding to AXL receptor tyrosine kinase. Compositions comprising a physiologically acceptable carrier and a therapeutically effective amount of the antigen-binding protein, or antigen-binding fragment thereof, therapeutic use of the antigen-binding protein, or antigen-binding fragment thereof, methods for detecting cancer as well as kits when used in such methods are also provided.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: April 19, 2022
    Assignee: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Mei Yee Vanessa Ding, Boon Hwa Andre Choo, Wey Jia Fong
  • Publication number: 20200317812
    Abstract: The present invention relates to antigen-binding proteins, or antigen-binding fragments thereof that bind to a glycan on the AXL receptor tyrosine kinase. The present invention also relates to antigen-binding proteins, or antigen-binding fragment conjugated to a radioisotope or cytotoxin, and wherein said antigen-binding proteins, or antigen-binding fragment is internalised into a cell upon binding to AXL receptor tyrosine kinase. Compositions comprising a physiologically acceptable carrier and a therapeutically effective amount of the antigen-binding protein, or antigen-binding fragment thereof, therapeutic use of the antigen-binding protein, or antigen-binding fragment thereof, methods for detecting cancer as well as kits when used in such methods are also provided.
    Type: Application
    Filed: May 22, 2017
    Publication date: October 8, 2020
    Inventors: Mei Yee Vanessa DING, Boon Hwa Andre CHOO, Wey Jia FONG
  • Publication number: 20200140828
    Abstract: An antibody that binds a glycosylated protein is disclosed, wherein the glycosylation comprises the glycan motif Fuc?1-2Gal?1-3GlcNAc?1-3Gal?1 or Fuc?1-2Gal?1-3GlcNAc. Antibodies that are cytotoxic against undifferentiated pluripotent cells are also disclosed.
    Type: Application
    Filed: August 20, 2019
    Publication date: May 7, 2020
    Inventors: Boon Hwa Andre Choo, Jiyun Zheng
  • Patent number: 10428312
    Abstract: An antibody that binds a glycosylated protein is disclosed, wherein the glycosylation comprises the glycan motif Fuc?1-2Gal?1-3GlcNAc1-3Gal?1 or Fuc?1-2Gal?1-3GlcNAc. Antibodies that are cytotoxic against undifferentiated pluripotent cells are also disclosed.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: October 1, 2019
    Assignee: Agency for Science, Technology and Research
    Inventors: Boon Hwa Andre Choo, Jiyun Zheng
  • Patent number: 10287547
    Abstract: This invention refers to an antibody or an antigen binding portion thereof, that binds specifically to human corneal endothelial cells (hCENCs), wherein the target of the monoclonal antibody, or antigen binding portion thereof, is essentially cell surface-expressed Peroxiredoxin-6 (Prdx6), as well as to methods for determining suitability of a cell sample for corneal transplantation, for quantitative enrichment of human corneal endothelial cells from a mixture of cells, and for isolating human corneal endothelial cells from a mixture of cell.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: May 14, 2019
    Assignees: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, SINGAPORE HEALTH SERVICES PTE LTD
    Inventors: Mei Yee Vanessa Ding, Boon Hwa Andre Choo, Chui Ping Angela Chin, Jodhbir Singh Mehta, Gary Peh
  • Publication number: 20170037366
    Abstract: This invention refers to an antibody or an antigen binding portion thereof, that binds specifically to human corneal endothelial cells (hCENCs), wherein the target of the monoclonal antibody, or antigen binding portion thereof, is essentially cell surface-expressed Peroxiredoxin-6 (Prdx6), as well as to methods for determining suitability of a cell sample for corneal transplantation, for quantitative enrichment of human corneal endothelial cells from a mixture of cells, and for isolating human corneal en dothelial cells from a mixture of cell.
    Type: Application
    Filed: April 11, 2014
    Publication date: February 9, 2017
    Inventors: Mei Yee Vanessa DING, Boon Hwa Andre CHOO, Chui Ping Angela CHIN, Jodhbir Singh MEHTA, Gary PEH
  • Publication number: 20170002331
    Abstract: An antibody that binds a glycosylated protein is disclosed, wherein the glycosylation comprises the glycan motif Fuc?1-2Gal?1-3GlcNAc1-3Gal?1 or Fuc?1-2Gal?1-3GlcNAc. Antibodies that are cytotoxic against undifferentiated pluripotent cells are also disclosed.
    Type: Application
    Filed: December 2, 2014
    Publication date: January 5, 2017
    Applicant: Agency for Science, Technology and Research
    Inventors: Boon Hwa Andre Choo, Jiyun Zheng
  • Patent number: 9340770
    Abstract: We disclose a particle comprising a matrix coated thereon and having a positive charge, the particle being of a size to allow aggregation of primate or human stem cells attached thereto. The particle may comprise a substantially elongate, cylindrical or rod shaped particle having a longest dimension of between 50 ?m and 400 ?m, such as about 200 ?m. It may have a cross sectional dimension of between 20 ?m and 30 ?m. The particle may comprise a substantially compact or spherical shaped particle having a size of between about 20 ?m and about 120 ?m, for example about 65 ?m. We also disclose a method of propagating primate or human stem cells, the method comprising: providing first and second primate or human stem cells attached to first and second respective particles, allowing the first primate or human stem cell to contact the second primate or human stem cell to form an aggregate of cells and culturing the aggregate to propagate the primate or human stem cells for at least one passage.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: May 17, 2016
    Assignee: Agency for Science, Technology and Research
    Inventors: Steve Oh, Marti Lecina, Andre Choo, Shaul Reuveny, Robert Zweigerdt, Allen Chen
  • Patent number: 9334324
    Abstract: The disclosure relates to novel markers of pluripotent stem cells and uses thereof, and particularly, though not exclusively, to antibody molecules based on fragments of mAb84 which bind to undifferentiated pluripotent stem cells via podocalyxin-like protein-1 (PODXL).
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: May 10, 2016
    Assignee: Agency for Science, Technology and Research
    Inventors: Boon Hwa Andre Choo, Vai Tak Victor Wong
  • Patent number: 9150829
    Abstract: A method is disclosed for culturing pluripotent or multipotent cells in vitro, the method comprising attaching pluripotent or multipotent cells to a plurality of microcarriers to form microcarrier-cell complexes, and culturing the microcarrier-cell complexes in suspension culture in the presence of a ROCK inhibitor.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: October 6, 2015
    Assignee: AGENCY FOR SCIENCE, TECHNOLOY AND RESEARCH
    Inventors: Steve Oh, Allen Chen, Andre Choo, Shaul Reuveny
  • Patent number: 8906678
    Abstract: The disclosure relates to methods of binding and identifying undifferentiated pluripotent stem cells and particularly, although not exclusively, to use of binding moieties which bind to PHB on the surface of undifferentiated pluripotent stem cells, such as PHB-binding peptides, and to methods for depleting undifferentiated stem cells from a sample.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: December 9, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: Boon Hwa Andre Choo, Wey Jia Fong
  • Patent number: 8802376
    Abstract: The disclosure relates to methods for screening candidate antibody molecules which bind to podocalyxin-like protein (PODXL) and/or to undifferentiated pluripotent stem cells and particularly, although not exclusively, to methods for identifying candidate cytotoxic antibody molecules.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: August 12, 2014
    Assignee: Agency for Science, Technology and Research
    Inventor: Boon Hwa Andre Choo
  • Publication number: 20140193903
    Abstract: We disclose a particle comprising a matrix coated thereon and having a positive charge, the particle being of a size to allow aggregation of primate or human stem cells attached thereto. The particle may comprise a substantially elongate, cylindrical or rod shaped particle having a longest dimension of between 50 ?m and 400 ?m, such as about 200 ?m. It may have a cross sectional dimension of between 20 ?m and 30 ?m. The particle may comprise a substantially compact or spherical shaped particle having a size of between about 20 ?m and about 120 ?m, for example about 65 ?m. We also disclose a method of propagating primate or human stem cells, the method comprising: providing first and second primate or human stem cells attached to first and second respective particles, allowing the first primate or human stem cell to contact the second primate or human stem cell to form an aggregate of cells and culturing the aggregate to propagate the primate or human stem cells for at least one passage.
    Type: Application
    Filed: December 19, 2013
    Publication date: July 10, 2014
    Applicant: Agency for Science, Technology and Research
    Inventors: Steve Oh, Marti Lecina, Andre Choo, Shaul Reuveny, Robert Zweigert, Allen Chen
  • Patent number: 8716018
    Abstract: We disclose a particle comprising a matrix coated thereon and having a positive charge, the particle being of a size to allow aggregation of primate or human stem cells attached thereto. The particle may comprise a substantially elongate, cylindrical or rod shaped particle having a longest dimension of between 50 ?m and 400 ?m, such as about 200 ?m. It may have a cross sectional dimension of between 20 ?m and 30 ?m. The particle may comprise a substantially compact or spherical shaped particle having a size of between about 20 ?m and about 120 ?m, for example about 65 ?m. We also disclose a method of propagating primate or human stem cells, the method comprising: providing first and second primate or human stem cells attached to first and second respective particles, allowing the first primate or human stem cell to contact the second primate or human stem cell to form an aggregate of cells and culturing the aggregate to propagate the primate or human stem cells for at least one passage.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: May 6, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: Steve Oh, Marti Lecina, Andre Choo, Shaul Reuveny, Robert Zweigert, Allen Chen
  • Patent number: 8710190
    Abstract: A method of identifying an undifferentiated human embryonic stem cell in a sample which may contain such cells, the method comprising identifying the cell or cells within the sample that express podocalyxin-like protein (PODXL) on their surface. A method of isolating an undifferentiated human embryonic stem cell from a sample containing such cells, the method comprising isolating the cell or cells within the sample that express PODXL on their surface. Typically, the methods use an antibody which binds to PODXL. Undifferentiated human embryonic stem cells isolated by the method may be useful in cell therapy. Also, in particular, compositions of cells differentiated from a human embryonic stem cell but which composition has been depleted of undifferentiated human embryonic stem cells are provided which are useful in cell therapy.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 29, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: Andre Choo, Steve Oh
  • Patent number: 8637309
    Abstract: We disclose a particle comprising a matrix coated thereon and having a positive charge, the particle being of a size to allow aggregation of primate or human stem cells attached thereto. The particle may comprise a substantially elongate, cylindrical or rod shaped particle having a longest dimension of between 50 ?m and 400 ?m, such as about 200 ?m. It may have a cross sectional dimension of between 20 ?m and 30 ?m. The particle may comprise a substantially compact or spherical shaped particle having a size of between about 20 ?m and about 120 ?m, for example about 65 ?m. We also disclose a method of propagating primate or human stem cells, the method comprising: providing first and second primate or human stem cells attached to first and second respective particles, allowing the first primate or human stem cell to contact the second primate or human stem cell to form an aggregate of cells and culturing the aggregate to propagate the primate or human stem cells for at least one passage.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: January 28, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: Steve Oh, Marti Lecina, Andre Choo, Shaul Reuveny, Robert Zweigert, Allen Chen
  • Publication number: 20130115627
    Abstract: The disclosure relates to methods for screening candidate antibody molecules which bind to podocalyxin-like protein (PODXL) and/or to undifferentiated pluripotent stem cells and particularly, although not exclusively, to methods for identifying candidate cytotoxic antibody molecules.
    Type: Application
    Filed: July 21, 2011
    Publication date: May 9, 2013
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventor: Boon Hwa Andre Choo
  • Publication number: 20130115623
    Abstract: The disclosure relates to methods of binding and identifying undifferentiated pluripotent stem cells and particularly, although not exclusively, to use of binding moieties which bind to PHB on the surface of undifferentiated pluripotent stem cells, such as PHB-binding peptides, and to methods for depleting undifferentiated stem cells from a sample.
    Type: Application
    Filed: March 10, 2011
    Publication date: May 9, 2013
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Boon Hwa Andre Choo, Wey Jia Fong