Patents by Inventor Leonardo M.R. Ferreira
Leonardo M.R. Ferreira 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).
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Publication number: 20240141288Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: ApplicationFiled: November 23, 2022Publication date: May 2, 2024Inventors: Torsten B. Meissner, Leonardo M.R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Publication number: 20230323288Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: ApplicationFiled: November 23, 2022Publication date: October 12, 2023Inventors: Torsten B. Meissner, Leonardo M.R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Publication number: 20230303969Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: ApplicationFiled: November 23, 2022Publication date: September 28, 2023Inventors: Torsten B. Meissner, Leonardo M.R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Publication number: 20230303968Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: ApplicationFiled: November 23, 2022Publication date: September 28, 2023Inventors: Torsten B. Meissner, Leonardo M.R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Patent number: 11618881Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: GrantFiled: January 13, 2021Date of Patent: April 4, 2023Assignee: President and Fellows of Harvard CollegeInventors: Torsten B. Meissner, Leonardo M. R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Patent number: 11492591Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: GrantFiled: October 9, 2021Date of Patent: November 8, 2022Assignee: President and Fellows of Harvard CollegeInventors: Torsten B. Meissner, Leonardo M. R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Publication number: 20220162555Abstract: Disclosed herein are modified primary human T cells and populations thereof comprising a genome in which the CTLA4, PD1, TCRA, TCRB, and/or B2M genes have been edited to generate an off-the-shelf universal CAR T cell from allogeneic healthy donors that can be administered to any patient while reducing or eliminating the risk of immune rejection or graft versus host disease, and which are not prone to T cell inhibition, and methods for allogeneic administration of such cells to reduce the likelihood that the cells will trigger a host immune response when the cells are administered to a subject in need of such cells.Type: ApplicationFiled: December 2, 2021Publication date: May 26, 2022Inventors: Torsten B. Meissner, Kabungo Y. Mulumba, Leonardo M.R. Ferreira, Chad A. Cowan
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Publication number: 20220162554Abstract: Disclosed herein are modified primary human T cells and populations thereof comprising a genome in which the CTLA4, PD1, TCRA, TCRB, and/or B2M genes have been edited to generate an off-the-shelf universal CAR T cell from allogeneic healthy donors that can be administered to any patient while reducing or eliminating the risk of immune rejection or graft versus host disease, and which are not prone to T cell inhibition, and methods for allogeneic administration of such cells to reduce the likelihood that the cells will trigger a host immune response when the cells are administered to a subject in need of such cells.Type: ApplicationFiled: November 12, 2021Publication date: May 26, 2022Inventors: Torsten B. Meissner, Kabungo Y. Mulumba, Leonardo M.R. Ferreira, Chad A. Cowan
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Publication number: 20220112459Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: ApplicationFiled: October 9, 2021Publication date: April 14, 2022Inventors: Torsten B. Meissner, Leonardo M.R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Publication number: 20210261916Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: ApplicationFiled: January 13, 2021Publication date: August 26, 2021Inventors: Torsten B. Meissner, Leonardo M.R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Publication number: 20210171903Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein have modulated expression of one or more MHC-I and MHC-II human leukocyte antigens and one or more tolerogenic factors.Type: ApplicationFiled: June 22, 2020Publication date: June 10, 2021Inventors: Torsten B. Meissner, Leonardo M.R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Patent number: 10968426Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: GrantFiled: May 9, 2016Date of Patent: April 6, 2021Assignee: President and Fellows of Harvard CollegeInventors: Torsten B. Meissner, Leonardo M. R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Publication number: 20210017248Abstract: Chimeric antigen receptor (CAR)-expressing T regulatory cells (Tregs) include intracellular co-stimulatory or inhibitory domains based on the biology, functions and activities of Tregs. The co-stimulatory or inhibitory domains modulate the Treg response, thereby, activating or suppressing an effector T cell (Teff) immune response to specific antigens.Type: ApplicationFiled: March 15, 2019Publication date: January 21, 2021Inventors: Jeffrey A. Bluestone, Qizhi Tang, Leonardo M.R. Ferreira
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Publication number: 20190309259Abstract: Disclosed herein are universal donor stem cells and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming the immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor stem cells disclosed herein do not express one or more MHC-I and MHC-II human leukocyte antigens. Similarly, in certain embodiments, the universal donor stem cells disclosed herein do not express one or more human leukocyte antigens (e.g., HLA-A, HLA-B and/or HLA-C) corresponding to MHC-I and MHC-II human leukocyte antigens, thereby rendering such cells hypoimmunogenic.Type: ApplicationFiled: May 9, 2016Publication date: October 10, 2019Inventors: Torsten B. Meissner, Leonardo M.R. Ferreira, Jack L. Strominger, Chad A. Cowan
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Publication number: 20180141992Abstract: Disclosed herein are cells and populations of cells comprising a genome in which the B2M gene has been edited to eliminate surface expression of MHC Class I protein in the cells or population of cells, and methods for allogeneic administration of such cells to reduce the likelihood that the cells will trigger a host immune response when the cells are administered to a subject in need of such cells.Type: ApplicationFiled: November 6, 2015Publication date: May 24, 2018Applicant: President and Fellows of Harvard CollegeInventors: Chad A. Cowan, Leonardo M.R. Ferreira, Torsten B. Meissner, Jack L. Strominger
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Publication number: 20160348073Abstract: Disclosed herein are modified primary human T cells and populations thereof comprising a genome in which the CTLA4, PD1, TCRA, TCRB, and/or B2M genes have been edited to generate an off-the-shelf universal CAR T cell from allogeneic healthy donors that can be administered to any patient while reducing or eliminating the risk of immune rejection or graft versus host disease, and which are not prone to T cell inhibition, and methods for allogeneic administration of such cells to reduce the likelihood that the cells will trigger a host immune response when the cells are administered to a subject in need of such cells.Type: ApplicationFiled: March 28, 2016Publication date: December 1, 2016Inventors: Torsten B. Meissner, Kabungo Y. Mulumba, Leonardo M.R. Ferreira, Chad A. Cowan