Patents by Inventor Zeling Cai

Zeling Cai 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).

  • Patent number: 11208483
    Abstract: Human antibodies which specifically bind to human CTLA-4, and related antibody-based compositions and molecules, are disclosed. Also disclosed are pharmaceutical compositions comprising the human antibodies, and therapeutic and diagnostic methods for using the human antibodies.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: December 28, 2021
    Assignee: Shanghai Kanda Biotechnology Co, Ltd.
    Inventors: Zeling Cai, Yi Chen
  • Patent number: 11021538
    Abstract: A bispecific coupled antibody, a preparation method and an application thereof are provided. Specifically, an anti-CTLA-4 humanized single-chain antibody fragment (scFv) is provided, which has the advantages of high affinity and strong specificity. Using the anti-CTLA-4 antibody to construct a recombinant bispecific conjugated antibody (fusing a humanized anti-Her-2 full antibody (Trastuzumab) with anti-CTLA-4 human single-chain antibody (scFv, single-chain antibody fragment)) is capable of significantly enhancing the body's immune response and maintaining or enhancing the activation state of T cells.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: June 1, 2021
    Inventors: Zeling Cai, Yi Chen
  • Publication number: 20200262921
    Abstract: Human antibodies which specifically bind to human CTLA-4, and related antibody-based compositions and molecules, are disclosed. Also disclosed are pharmaceutical compositions comprising the human antibodies, and therapeutic and diagnostic methods for using the human antibodies.
    Type: Application
    Filed: November 19, 2015
    Publication date: August 20, 2020
    Inventors: Zeling Cai, Yi Chen
  • Patent number: 10562954
    Abstract: The present invention provides a fusion protein inhibiting TACI-BAFF complex formation and preparation method therefor and use thereof. Specifically, the fusion protein of the present invention is of high biological activity for blocking BAFF/APPRIL, and may significantly lower the serum IgM concentration in normal Balb/c mice as well as the serum IgM and IgE concentration in C57/B6 mice with asthma. The TACI-Fc fusion protein of the present invention may be used in the treatment of autoimmune diseases, including asthma, systemic lupus eythematosus and rheumatoid arthritis, etc., and may also be used in the treatment of B cell enrichment-related diseases, including multiple myeloma, chronic lymphocytic leukemia, macroglobulinemia and plasmacytic leukemia, etc.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: February 18, 2020
    Assignees: Shanghai Kanda Biotechnology Co., Ltd., Shanghai Celgen Bio-Pharmaceutical Co., Ltd.
    Inventors: Zeling Cai, Yi Chen, Heng Wu, Guobo Fang
  • Publication number: 20190062402
    Abstract: The present invention provides an ACVR1-Fc fusion protein, a nucleic acid sequence encoding said fusion protein, a vector or a host cell comprising said encoding sequence, a method for producing said fusion protein, and use of any of the above in prevention and/or treatment of diseases or conditions associated with ACVR1 abnormality (e.g. ACVR1 mutation and/or over-activation).
    Type: Application
    Filed: August 8, 2016
    Publication date: February 28, 2019
    Inventors: Yi CHEN, Zeling CAI, Keqin ZHANG
  • Publication number: 20190048080
    Abstract: A bispecific coupled antibody, a preparation method and an application thereof are provided. Specifically, an anti-CTLA-4 humanized single-chain antibody fragment (scFv) is provided, which has the advantages of high affinity and strong specificity. Using the anti-CTLA-4 antibody to construct a recombinant bispecific conjugated antibody (fusing a humanized anti-Her-2 full antibody (Trastuzumab) with anti-CTLA-4 human single-chain antibody (scFv, single-chain antibody fragment)) is capable of significantly enhancing the body's immune response and maintaining or enhancing the activation state of T cells.
    Type: Application
    Filed: June 18, 2018
    Publication date: February 14, 2019
    Inventors: Zeling Cai, Yi Chen
  • Publication number: 20170081387
    Abstract: The present invention provides a fusion protein inhibiting TACI-BAFF complex formation and preparation method therefor and use thereof. Specifically, the fusion protein of the present invention is of high biological activity for blocking BAFF/APPRIL, and may significantly lower the serum IgM concentration in normal Balb/c mice as well as the serum IgM and IgE concentration in C57/B6 mice with asthma. The TACI-Fc fusion protein of the present invention may be used in the treatment of autoimmune diseases, including asthma, systemic lupus eythematosus and rheumatoid arthritis, etc., and may also be used in the treatment of B cell enrichment-related diseases, including multiple myeloma, chronic lymphocytic leukemia, macroglobulinemia and plasmacytic leukemia, etc.
    Type: Application
    Filed: May 12, 2014
    Publication date: March 23, 2017
    Applicants: Shanghai Kanda Biotechnology Co., Ltd., Shanghai Celgen Bio-Pharmaceutical Co., Ltd.
    Inventors: Zeling Cai, Yi Chen, Heng Wu, Guobo Fang
  • Patent number: 8357533
    Abstract: Methods of processing inactivated artificial antigen presenting cells (aAPCs) and artificial antigen presenting cells with specificity for selected antigenic peptides are described, including their generation and use in cell therapy compositions comprising activated cytotoxic T lymphocytes. Inactivated aAPCs are advantageously generated through crosslinking, such as via a photoreaction involving a psoralen derivative and UVA irradiation.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: January 22, 2013
    Assignee: Janssen Pharmaceutica, N.V.
    Inventors: Zeling Cai, Ann Moriarty, Juli Degraw, Didier Leturcq, Wei-Xing Shi, Karen Kabat Stegman, Xilian Yue
  • Patent number: 8323965
    Abstract: Multiple myeloma (MM) is a clonal B cell malignancy and remains essentially incurable by conventional anti-tumor therapy. Patients with MM have a median survival of only three years. MM is characterized by proliferation and accumulation of mature plasma cells in the bone marrow (BM) leading to bone destruction, BM failure, anemia, and reduced immune function. The identification of MHC Class I, HLA-A2, associated peptides presented on multiple myeloma cells is an important step in developing immunotherapies for MM. Presented here are methods for creating activated T lymphocytes that are cytotoxic to both peptide loaded T2 target cells and multiple myeloma cell lines.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: December 4, 2012
    Assignee: Janssen Pharmaceutica NV
    Inventors: Zeling Cai, Wei-Xing Shi, Xuejun P. Liu, Jiejun Wu
  • Patent number: 8323655
    Abstract: Multiple myeloma (MM) is a clonal B cell malignancy and remains essentially incurable by conventional anti-tumor therapy. Patients with MM have a median survival of only three years. MM is characterized by proliferation and accumulation of mature plasma cells in the bone marrow (BM) leading to bone destruction, BM failure, anemia, and reduced immune function. The identification of MHC Class I, HLA-A2, associated peptides presented on multiple myeloma cells is an important step in developing immunotherapies for MM. Presented here are methods for creating activated T lymphocytes that are cytotoxic to both peptide loaded T2 target cells and multiple myeloma cell lines.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: December 4, 2012
    Assignee: Janssen Pharmaceutica NV
    Inventors: Zeling Cai, Wei-Xing Shi, Xuejun P. Liu, Jiejun Wu
  • Patent number: 8232101
    Abstract: Multiple myeloma (MM) is a clonal B cell malignancy and remains essentially incurable by conventional anti-tumor therapy. Patients with MM have a median survival of only three years. MM is characterized by proliferation and accumulation of mature plasma cells in the bone marrow (BM) leading to bone destruction, BM failure, anemia, and reduced immune function. The identification of MHC Class I, HLA-A2, associated peptides presented on multiple myeloma cells is an important step in developing immunotherapies for MM. Presented here are methods for creating activated T lymphocytes that are cytotoxic to both peptide loaded T2 target cells and multiple myeloma cell lines.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: July 31, 2012
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Zeling Cai, Wei-Xing Shi, Xuejun P. Liu, Jiejun Wu
  • Publication number: 20120115223
    Abstract: Methods of processing inactivated artificial antigen presenting cells (aAPCs) and artificial antigen presenting cells with specificity for selected antigenic peptides are described, including their generation and use in cell therapy compositions comprising activated cytotoxic T lymphocytes. Inactivated aAPCs are advantageously generated through crosslinking, such as via a photoreaction involving a psoralen derivative and UVA irradiation.
    Type: Application
    Filed: January 13, 2012
    Publication date: May 10, 2012
    Inventors: Zeling Cai, Ann Moriarty, Juli Degraw, Didier Leturcq, Wei-Xing Shi, Karen Kabat Stegman, Xilian Yue
  • Patent number: 8133726
    Abstract: Cytotoxic T lymphocytes (CTLs) specific for antigenic peptides derived from IgE molecule can be generated in vitro by stimulating resting naive CD8 T cells with IgE peptides presented by artificial antigen presenting cells. The IgE specific CTLs lyse the target cells loaded with IgE peptides in vitro and inhibit antigen specific IgE response in vivo. In addition, adoptive transfer of the IgE specific CTL to an asthmatic mouse model can inhibit the development of lung inflammation and airway hypersensitivity. IgE specific CTL provides a treatment for allergic asthma and other IgE-mediated allergic diseases. Antigenic peptides identified from non-tumor self-antigens induce specific cytotoxic T lymphocyte (CTL) in vitro. The CTL induced by peptides identified from CD40L can kill activated CD4 T cells. In vitro generated CTL specific for CD40L inhibit CD4-dependent antibody responses of all isotypes in vivo.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: March 13, 2012
    Assignee: Ortho-McNeil Pharmaceutical Corp.
    Inventors: Zeling Cai, Michael R. Jackson, Per A. Peterson, Wei-Xing Shi, Yan Kong, Juli DeGraw
  • Patent number: 8133728
    Abstract: Cytotoxic T lymphocytes (CTLs) specific for antigenic peptides derived from IgE molecule can be generated in vitro by stimulating resting naive CD8 T cells with IgE peptides presented by artificial antigen presenting cells. The IgE specific CTLs lyse the target cells loaded with IgE peptides in vitro and inhibit antigen specific IgE response in vivo. In addition, adoptive transfer of the IgE specific CTL to an asthmatic mouse model can inhibit the development of lung inflammation and airway hypersensitivity. IgE specific CTL provides a treatment for allergic asthma and other IgE-mediated allergic diseases. Antigenic peptides identified from non-tumor self-antigens induce specific cytotoxic T lymphocyte (CTL) in vitro. The CTL induced by peptides identified from CD40L can kill activated CD4 T cells. In vitro generated CTL specific for CD40L inhibit CD4-dependent antibody responses of all isotypes in vivo.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: March 13, 2012
    Assignee: Ortho-McNeil Pharmaceutical Corp.
    Inventors: Zeling Cai, Michael R. Jackson, Per A. Peterson, Wei-Xing Shi, Yan Kong, Juli DeGraw
  • Patent number: 8133972
    Abstract: Cytotoxic T lymphocytes (CTLs) specific for antigenic peptides derived from IgE molecule can be generated in vitro by stimulating resting naive CD8 T cells with IgE peptides presented by artificial antigen presenting cells. The IgE specific CTLs lyse the target cells loaded with IgE peptides in vitro and inhibit antigen specific IgE response in vivo. In addition, adoptive transfer of the IgE specific CTL to an asthmatic mouse model can inhibit the development of lung inflammation and airway hypersensitivity. IgE specific CTL provides a treatment for allergic asthma and other IgE-mediated allergic diseases. Antigenic peptides identified from non-tumor self-antigens induce specific cytotoxic T lymphocyte (CTL) in vitro. The CTL induced by peptides identified from CD40L can kill activated CD4 T cells. In vitro generated CTL specific for CD40L inhibit CD4-dependent antibody responses of all isotypes in vivo.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: March 13, 2012
    Assignee: Ortho-McNeil Pharmaceutical Corp.
    Inventors: Zeling Cai, Michael R. Jackson, Per A. Peterson, Wei-Xing Shi, Yan Kong, Juli DeGraw
  • Patent number: 8124408
    Abstract: Methods of processing inactivated artificial antigen presenting cells (aAPCs) and artificial antigen presenting cells with specificity for selected antigenic peptides are described, including their generation and use in cell therapy compositions comprising activated cytotoxic T lymphocytes. Inactivated aAPCs are advantageously generated through crosslinking, such as via a photoreaction involving a psoralen derivative and UVA irradiation.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: February 28, 2012
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Zeling Cai, Ann Moriarty, Juli Degraw, Didier Leturcq, Wei-Xing Shi, Karen Kabat Stegman, Xilian Yue
  • Publication number: 20120045829
    Abstract: Multiple myeloma (MM) is a clonal B cell malignancy and remains essentially incurable by conventional anti-tumor therapy. Patients with MM have a median survival of only three years. MM is characterized by proliferation and accumulation of mature plasma cells in the bone marrow (BM) leading to bone destruction, BM failure, anemia, and reduced immune function. The identification of MHC Class I, HLA-A2, associated peptides presented on multiple myeloma cells is an important step in developing immunotherapies for MM. Presented here are methods for creating activated T lymphocytes that are cytotoxic to both peptide loaded T2 target cells and multiple myeloma cell lines.
    Type: Application
    Filed: October 31, 2011
    Publication date: February 23, 2012
    Inventors: ZELING CAI, WEI-XING SHI, XUEJUN P. LIU, JIEJUN WU
  • Publication number: 20120045466
    Abstract: Multiple myeloma (MM) is a clonal B cell malignancy and remains essentially incurable by conventional anti-tumor therapy. Patients with MM have a median survival of only three years. MM is characterized by proliferation and accumulation of mature plasma cells in the bone marrow (BM) leading to bone destruction, BM failure, anemia, and reduced immune function. The identification of MHC Class I, HLA-A2, associated peptides presented on multiple myeloma cells is an important step in developing immunotherapies for MM. Presented here are methods for creating activated T lymphocytes that are cytotoxic to both peptide loaded T2 target cells and multiple myeloma cell lines.
    Type: Application
    Filed: October 31, 2011
    Publication date: February 23, 2012
    Inventors: ZELING CAI, WEI-XING SHI, XUEJUN P. LIU, JIEJUN WU
  • Publication number: 20120046645
    Abstract: Multiple myeloma (MM) is a clonal B cell malignancy and remains essentially incurable by conventional anti-tumor therapy. Patients with MM have a median survival of only three years. MM is characterized by proliferation and accumulation of mature plasma cells in the bone marrow (BM) leading to bone destruction, BM failure, anemia, and reduced immune function. The identification of MHC Class I, HLA-A2, associated peptides presented on multiple myeloma cells is an important step in developing immunotherapies for MM. Presented here are methods for creating activated T lymphocytes that are cytotoxic to both peptide loaded T2 target cells and multiple myeloma cell lines.
    Type: Application
    Filed: October 31, 2011
    Publication date: February 23, 2012
    Inventors: ZELING CAI, WEI-XING SHI, XUEJUN P. LIU, JIEJUN WU
  • Patent number: 8106153
    Abstract: Cytotoxic T lymphocytes (CTLs) specific for antigenic peptides derived from IgE molecule can be generated in vitro by stimulating resting naive CD8 T cells with IgE peptides presented by artificial antigen presenting cells. The IgE specific CTLs lyse the target cells loaded with IgE peptides in vitro and inhibit antigen specific IgE response in vivo. In addition, adoptive transfer of the IgE specific CTL to an asthmatic mouse model can inhibit the development of lung inflammation and airway hypersensitivity. IgE specific CTL provides a treatment for allergic asthma and other IgE-mediated allergic diseases. Antigenic peptides identified from non-tumor self-antigens induce specific cytotoxic T lymphocyte (CTL) in vitro. The CTL induced by peptides identified from CD40L can kill activated CD4 T cells. In vitro generated CTL specific for CD40L inhibit CD4-dependent antibody responses of all isotypes in vivo.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: January 31, 2012
    Assignee: Ortho-McNeil Pharmaceutical Corp.
    Inventors: Zeling Cai, Michael R. Jackson, Per A. Peterson, Wei-Xing Shi, Yan Kong, Juli DeGraw