Patents Assigned to Cellectis
  • Publication number: 20230357719
    Abstract: Methods of developing genetically engineered immune cells for immunotherapy, which can be endowed with Chimeric Antigen Receptors targeting an antigen marker that is common to both the pathological cells and said immune cells (ex: CD38, CSI or CD70) by the fact that the genes encoding said markers are inactivated in said immune cells by a rare cutting endonuclease such as TALEN, Cas9 or argonaute.
    Type: Application
    Filed: May 22, 2023
    Publication date: November 9, 2023
    Applicant: Cellectis
    Inventors: Philippe DUCHATEAU, Laurent POIROT
  • Patent number: 11778993
    Abstract: The present invention relates to polypeptides and more particularly to Transcription Activator-Like Effector derived proteins that allow to efficiently target and/or process nucleic acids. The present invention also concerns methods to use these proteins. The present invention also relates to vectors, compositions and kits in which RVD domains and Transcription Activator-Like Effector (TALE) proteins of the present invention are used.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 10, 2023
    Assignee: CELLECTIS, S.A.
    Inventors: Philippe Duchateau, Alexandre Juillerat, Claudia Bertonati
  • Patent number: 11767512
    Abstract: The invention pertains to the field of cell therapy and HIV treatments. It provides with highly specific reagents for reducing or inactivating expression of CCR5 in primate and human primary cells, especially under the form of TALE-nucleases. These reagents allow the production of safer primary hematopoietic cells made resistant to HIV, stem cells or differentiated cells, for their infusion into HIV patients.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: September 26, 2023
    Assignees: CELLECTIS, ALBERT-LUDWIGS-UNIVERSITAT FREIBURG
    Inventors: Toni Cathomen, Tatjana Cornu, Philippe Duchateau, Claudio Mussolino, Marianna Romito, Agnes Gouble
  • Patent number: 11692169
    Abstract: Methods of developing genetically engineered immune cells for immunotherapy, which can be endowed with Chimeric Antigen Receptors targeting an antigen marker that is common to both the pathological cells and said immune cells (ex: CD38, CS1 or CD70) by the fact that the genes encoding said markers are inactivated in said immune cells by a rare cutting endonuclease such as TALEN, Cas9 or argonaute.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: July 4, 2023
    Assignee: CELLECTIS
    Inventors: Philippe Duchateau, Laurent Poirot
  • Patent number: 11690873
    Abstract: The present invention relates to new CD22 Chimeric Antigen Receptors (CD22 CAR), an engineered immune cell endowed with said new CD22 CAR and comprising at least inactivated TRAC gene for use in therapy. The engineered immune cells endowed with such CARs are particularly suited for treating relapsed refractory CD22 expressing cancers.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: July 4, 2023
    Assignee: CELLECTIS SA
    Inventors: Cecile Schiffer-Mannioui, Philippe Duchateau, Anne-Sophie Gautron
  • Publication number: 20230201260
    Abstract: The present invention relates to methods for developing engineered T-cells for immunotherapy that are non-alloreactive. The present invention relates to methods for modifying T-cells by inactivating both genes encoding T-cell receptor and an immune checkpoint gene to unleash the potential of the immune response. This method involves the use of specific rare cutting endonucleases, in particular TALE-nucleases (TAL effector endonuclease) and polynucleotides encoding such polypeptides, to precisely target a selection of key genes in T-cells, which are available from donors or from culture of primary cells. The invention opens the way to standard and affordable adoptive immunotherapy strategies for treating cancer and viral infections.
    Type: Application
    Filed: November 17, 2022
    Publication date: June 29, 2023
    Applicant: CELLECTIS
    Inventors: Roman GALETTO, Agnes GOUBLE, Stephanie GROSSE, Cécile SCHIFFER-MANNIOUI, Laurent POIROT, Andrew SCHARENBERG, Julianne SMITH
  • Patent number: 11685935
    Abstract: The present invention is in the field of CRISPR-Cas system for genome targeting. The present invention relates to new engineered Cas9 scaffolds and uses thereof. More particularly, the present invention relates to methods for genome targeting, cell engineering and therapeutic application. The present invention also relates to vectors, compositions and kits in which the new Cas9 scaffolds of the present invention are used.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: June 27, 2023
    Assignee: CELLECTIS
    Inventors: Philippe Duchateau, Claudia Bertonati
  • Patent number: 11674155
    Abstract: The invention pertains to the field of adaptive cell immunotherapy. It aims at reducing the occurrence of translocations and cell deaths when several specific endonuclease reagents are used altogether to genetically modify primary immune cells at different genetic loci. The method of the invention allows to yield safer immune primary cells harboring several genetic modifications, such as triple or quadruple gene inactivated cells, from populations or sub-populations of cells originating from a single donor or patient, for their subsequent use in therapeutic treatments.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: June 13, 2023
    Assignee: CELLECTIS
    Inventors: Jean-Pierre Cabaniols, Jean-Charles Epinat, Philippe Duchateau
  • Patent number: 11624072
    Abstract: Materials and methods for creating canola (e.g., Brassica napus) lines having oil with increased oleic acid content are provided herein.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: April 11, 2023
    Assignee: Cellectis
    Inventors: Wenzheng Zhang, Feng Zhang
  • Patent number: 11603539
    Abstract: Methods for developing engineered T-cells for immunotherapy that are both non-alloreactive and resistant to immunosuppressive drugs. The present invention relates to methods for modifying T-cells by inactivating both genes encoding target for an immunosuppressive agent and T-cell receptor, in particular genes encoding CD52 and TCR. This method involves the use of specific rare cutting endonucleases, in particular TALE-nucleases (TAL effector endonuclease) and polynucleotides encoding such polypeptides, to precisely target a selection of key genes in T-cells, which are available from donors or from culture of primary cells. The invention opens the way to standard and affordable adoptive immunotherapy strategies for treating cancer and viral infections.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: March 14, 2023
    Assignee: CELLECTIS
    Inventors: Roman Galetto, Agnès Gouble, Stéphanie Grosse, Cécile Mannioui, Laurent Poirot, Andrew Scharenberg, Julianne Smith
  • Publication number: 20230056268
    Abstract: The present invention relates to methods for developing engineered T-cells for immunotherapy and more specifically to methods for modifying T-cells by inactivating at immune checkpoint genes, preferably at least two selected from different pathways, to increase T-cell immune activity This method involves the use of specific rare cutting endonucleases, in particular TALE-nucleases (TAL effector endonuclease) and polynucleotides encoding such polypeptides, to precisely target a selection of key genes in T-cells, which are available from donors or from culture of primary cells. The invention opens the way to highly efficient adoptive immunotherapy strategies for treating cancer and viral infections.
    Type: Application
    Filed: April 8, 2022
    Publication date: February 23, 2023
    Applicant: CELLECTIS
    Inventors: Roman GALETTO, Agnes GOUBLE, Stephanie GROSSE, Cécile SCHIFFER-MANNIOUI, Laurent POIROT, Andrew SCHARENBERG, Julianne SMITH
  • Publication number: 20230050345
    Abstract: The present invention relates to methods for developing engineered T-cells for immunotherapy that are non-alloreactive. The present invention relates to methods for modifying T-cells by inactivating both genes encoding T-cell receptor and an immune checkpoint gene to unleash the potential of the immune response. This method involves the use of specific rare cutting endonucleases, in particular TALE-nucleases (TAL effector endonuclease) and polynucleotides encoding such polypeptides, to precisely target a selection of key genes in T-cells, which are available from donors or from culture of primary cells. The invention opens the way to standard and affordable adoptive immunotherapy strategies for treating cancer and viral infections.
    Type: Application
    Filed: April 7, 2022
    Publication date: February 16, 2023
    Applicant: CELLECTIS
    Inventors: Roman GALETTO, Agnes GOUBLE, Stephanie GROSSE, Cécile SCHIFFER-MANNIOUI, Laurent POIROT, Andrew SCHARENBERG, Julianne SMITH
  • Patent number: 11576317
    Abstract: Materials and methods are provided for making plants (e.g., Nicotiana varieties) that are suitable for producing therapeutic polypeptides suitable for administration to humans and animals, particularly by making TAL effector endonuclease-induced mutations in genes encoding xylosyltransferases and fucosyltransferases.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: February 14, 2023
    Assignees: CELLECTIS SA, MEDICAGO INC.
    Inventors: Luc Mathis, Daniel F. Voytas, Jin Li, Feng Zhang, Thomas Stoddard, Marc-Andre D'Aoust
  • Patent number: 11578318
    Abstract: An object of the invention is to provide an electroporation method for treating vesicles with exogenous material for insertion of the exogenous material into the vesicles which includes the steps of: a. retaining a suspension of the vesicles and the exogenous material in a treatment volume in a chamber which includes electrodes, wherein the chamber has a geometric factor (cm?1) defined by the quotient of the electrode gap squared (cm2) divided by the chamber volume (cm3), wherein the geometric factor is less than or equal to 0.1 cm?1, wherein the suspension of the vesicles and the exogenous material is in a medium which is adjusted such that the medium has conductivity in a range spanning 50 microSiemens/cm to 500 microSiemens/cm, wherein the suspension is enclosed in the chamber during treatment, and b. treating the suspension enclosed in the chamber with one or more pulsed electric fields.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: February 14, 2023
    Assignee: CELLECTIS S.A.
    Inventors: Richard E Walters, Alan D King
  • Patent number: 11555198
    Abstract: Materials and methods are provided for making plants (e.g., Nicotiana varieties) that are suitable for producing therapeutic polypeptides suitable for administration to humans and animals, particularly by making TAL effector endonuclease-induced mutations in genes encoding xylosyltransferases and fucosyltransferases.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: January 17, 2023
    Assignees: CELLECTIS SA, MEDICAGO INC.
    Inventors: Luc Mathis, Daniel F. Voytas, Jin Li, Feng Zhang, Thomas Stoddard, Marc-Andre D'Aoust
  • Patent number: 11498971
    Abstract: The present invention relates to Chimeric Antigen Receptors (CAR) that are recombinant chimeric proteins able to redirect immune cell specificity and reactivity toward selected membrane antigens, and more particularly in which extracellular ligand binding is a scFV derived from a BCMA monoclonal antibody, conferring specific immunity against BCMA positive cells. The engineered immune cells endowed with such CARs are particularly suited for treating lymphomas, multiple myeloma and leukemia.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: November 15, 2022
    Assignee: Cellectis
    Inventor: Roman Galetto
  • Publication number: 20220348955
    Abstract: A method of expanding TCRalpha deficient T-cells by expressing pTalpha or functional variants thereof into said cells, thereby restoring a functional CD3 complex. This method is particularly useful to enhance the efficiency of immunotherapy using primary T-cells from donors. This method involves the use of pTalpha or functional variants thereof and polynucleotides encoding such polypeptides to expand TCRalpha deficient T-cells. Such engineered cells can be obtained by using specific rare-cutting endonuclease, preferably TALE-nucleases. The use of Chimeric Antigen Receptor (CAR), especially multi-chain CAR, in such engineered cells to target malignant or infected cells. The invention opens the way to standard and affordable adoptive immunotherapy strategies for treating cancer and viral infections.
    Type: Application
    Filed: June 24, 2022
    Publication date: November 3, 2022
    Applicant: Cellectis
    Inventors: Roman GALETTO, Agnes GOUBLE, Stephanie GROSSE, Cecile MANNIOUI, Laurent POIROT, Andrew SCHARENBERG, Julianne SMITH
  • Patent number: 11479782
    Abstract: Materials and methods for creating plants (e.g., alfalfa lines) with reduced lignin content and composition are provided herein, as are plants, plant parts, and plant cells generated by the methods provided herein.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: October 25, 2022
    Assignee: CELLECTIS
    Inventors: Song Luo, Nicholas J. Baltes
  • Patent number: 11466291
    Abstract: The invention pertains to the field of adaptive cell immunotherapy. It aims at reducing the occurrence of translocations and cell deaths when several specific endonuclease reagents are used altogether to genetically modify primary immune cells at different genetic loci. The method of the invention allows to yield safer immune primary cells harboring several genetic modifications, such as triple or quadruple gene inactivated cells, from populations or sub-populations of cells originating from a single donor or patient, for their subsequent use in therapeutic treatments.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: October 11, 2022
    Assignee: CELLECTIS
    Inventors: Jean-Pierre Cabaniols, Jean-Charles Epinat, Philippe Duchateau
  • Patent number: 11414674
    Abstract: A method of expanding deficient T-cells by expressing pTalpha or functional variants thereof into said cells, thereby restoring a functional CD3 complex. This method is particularly useful to enhance the efficiency of immunotherapy using primary T-cells from donors. This method involves the use of pTalpha or functional variants thereof and polynucleotides encoding such polypeptides to expand TCRalpha deficient T-cells. Such engineered cells can be obtained by using specific rare-cutting endonuclease, preferably TALE-nucleases. The use of Chimeric Antigen Receptor (CAR), especially multi-chain CAR, in such engineered cells to target malignant or infected cells. The invention opens the way to standard and affordable adoptive immunotherapy strategies for treating cancer and viral infections.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: August 16, 2022
    Assignee: CELLECTIS
    Inventors: Roman Galetto, Agnes Gouble, Stephanie Grosse, Cecile Mannioui, Laurent Poirot, Andrew Scharenberg, Julianne Smith