Patents Assigned to Cellectis
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Patent number: 11959091Abstract: The present invention relates to methods of developing genetically engineered, preferably non-alloreactive T-cells for immunotherapy. This method involves the use of RNA-guided endonucleases, in particular Cas9/CRISPR system, to specifically target a selection of key genes in T-cells. The engineered T-cells are also intended to express chimeric antigen receptors (CAR) to redirect their immune activity towards malignant or infected cells. The invention opens the way to standard and affordable adoptive immunotherapy strategies using T-Cells for treating cancer and viral infections.Type: GrantFiled: November 20, 2020Date of Patent: April 16, 2024Assignee: CellectisInventors: Philippe Duchateau, André Choulika, Laurent Poirot
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Patent number: 11944643Abstract: The present invention relates to an engineered immune cell endowed with CD22 Chimeric Antigen Receptors (CD22 CAR) with a deletion in the TRAC gene that is able to redirect immune cell specificity and reactivity toward selected tumor cells. The engineered immune cells endowed with such CARs are particularly suited for treating relapsed refractory CD22 expressing cancers.Type: GrantFiled: March 30, 2018Date of Patent: April 2, 2024Assignee: CELLECTIS SAInventors: Julianne Smith, Philippe Duchateau, Murielle Derrien
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Publication number: 20240076685Abstract: Materials and methods for creating canola (e.g., Brassica napus) lines having oil with increased oleic acid content are provided herein. For example, a Brassica plant, plant part, or plant cell having an induced mutation in one or more FAD2 gene copies, oil produced from the plant, plant part, or plant cell has increased oleic acid content and decreased linolenic acid content as compared to oil produced from a corresponding wild type Brassica plant, plant part, or plant cell, wherein the mutation was induced by one or more rare cutting endonucleases targeted to the one or more FAD2 gene copies, and methods of making and using the Brassica plant, plant part or plant cell, are provided.Type: ApplicationFiled: April 10, 2023Publication date: March 7, 2024Applicant: CELLECTISInventors: Wenzheng Zhang, Feng Zhang
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Patent number: 11919961Abstract: 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 CD123 monoclonal antibody, conferring specific immunity against CD123 positive cells. The engineered immune cells endowed with such CARs are particularly suited for treating lymphomas and leukemia.Type: GrantFiled: December 17, 2020Date of Patent: March 5, 2024Assignee: CELLECTISInventor: Roman Galetto
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Patent number: 11903968Abstract: The invention pertains to the field of adoptive cell immunotherapy. It provides with engineered immune cells comprising genetic alteration into genes which are involved into immune functions downregulation, especially in response to environment signals such as nutrients depletion. Such method allows the production of more potent immune cells in the context of tumors' microenvironment.Type: GrantFiled: July 20, 2018Date of Patent: February 20, 2024Assignee: CELLECTISInventors: Philippe Duchateau, Anne-Sophie Gautron, Laurent Poirot, Julien Valton
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Patent number: 11891614Abstract: 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: GrantFiled: May 17, 2020Date of Patent: February 6, 2024Assignee: CELLECTISInventors: Roman Galetto, Agnes Gouble, Stephanie Grosse, Cecile Mannioui, Laurent Poirot, Andrew Scharenberg, Julianne Smith
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Publication number: 20240026376Abstract: The present invention pertains to engineered T-cells, method for their preparation and their use as medicament, particularly for immunotherapy. The engineered T-cells of the invention are characterized in that the expression of beta 2-microglobulin (B2M) and/or class II major histocompatibility complex transactivator (CIITA) is inhibited, e.g., by using rare-cutting endonucleases able to selectively inactivating by DNA cleavage the gene encoding B2M and/or CIITA, or by using nucleic acid molecules which inhibit the expression of B2M and/or CIITA. In order to further render the T-cell non-alloreactive, at least one gene encoding a component of the T-cell receptor is inactivated, e.g., by using a rare-cutting endonucleases able to selectively inactivating by DNA cleavage the gene encoding said TCR component. In addition, expression of immunosuppressive polypeptide can be performed on those modified T-cells in order to prolong the survival of these modified T cells in host organism.Type: ApplicationFiled: October 4, 2023Publication date: January 25, 2024Applicant: CELLECTISInventors: Laurent POIROT, David SOURDIVE, Philippe DUCHATEAU, Jean-Pierre CABANIOLS
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Patent number: 11873511Abstract: The invention pertains to the field of adaptive cell immunotherapy. It provides with the genetic insertion of exogenous coding sequence(s) that help the immune cells to direct their immune response against infected or malignant cells. These exogenous coding sequences are more particularly inserted under the transcriptional control of endogenous gene promoters that are sensitive to immune cells activation. Such method allows the production of safer immune primary cells of higher therapeutic potential.Type: GrantFiled: October 19, 2017Date of Patent: January 16, 2024Assignee: CELLECTISInventors: Brian Busser, Philippe Duchateau, Alexandre Juillerat, Laurent Poirot, Julien Valton
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Patent number: 11820996Abstract: The present invention pertains to engineered T-cells, method for their preparation and their use as medicament, particularly for immunotherapy. The engineered T-cells of the invention are characterized in that the expression of beta 2-microglobulin (B2M) and/or class II major histocompatibility complex transactivator (CIITA) is inhibited, e.g., by using rare-cutting endonucleases able to selectively inactivating by DNA cleavage the gene encoding B2M and/or CIITA or by using nucleic acid molecules which inhibit the expression of B2M and/or CIITA. In order to further render the T-cell non-alloreactive, at least one gene encoding a component of the T-cell receptor is inactivated, e.g., by using a rare-cutting endonucleases able to selectively inactivating by DNA cleavage the gene encoding said TCR component. In addition, expression of immunosuppressive polypeptide can be performed on those modified T-cells in order to prolong the survival of these modified T cells in host organism.Type: GrantFiled: September 21, 2018Date of Patent: November 21, 2023Assignee: CELLECTISInventors: Laurent Poirot, David Sourdive, Philippe Duchateau, Jean-Pierre Cabaniols
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Publication number: 20230357719Abstract: 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: ApplicationFiled: May 22, 2023Publication date: November 9, 2023Applicant: CellectisInventors: Philippe DUCHATEAU, Laurent POIROT
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Patent number: 11778993Abstract: 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: GrantFiled: March 15, 2013Date of Patent: October 10, 2023Assignee: CELLECTIS, S.A.Inventors: Philippe Duchateau, Alexandre Juillerat, Claudia Bertonati
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Patent number: 11767512Abstract: 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: GrantFiled: April 13, 2018Date of Patent: September 26, 2023Assignees: CELLECTIS, ALBERT-LUDWIGS-UNIVERSITAT FREIBURGInventors: Toni Cathomen, Tatjana Cornu, Philippe Duchateau, Claudio Mussolino, Marianna Romito, Agnes Gouble
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Patent number: 11692169Abstract: 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: GrantFiled: July 27, 2020Date of Patent: July 4, 2023Assignee: CELLECTISInventors: Philippe Duchateau, Laurent Poirot
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Patent number: 11690873Abstract: 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: GrantFiled: March 30, 2018Date of Patent: July 4, 2023Assignee: CELLECTIS SAInventors: Cecile Schiffer-Mannioui, Philippe Duchateau, Anne-Sophie Gautron
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Publication number: 20230201260Abstract: 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: ApplicationFiled: November 17, 2022Publication date: June 29, 2023Applicant: CELLECTISInventors: Roman GALETTO, Agnes GOUBLE, Stephanie GROSSE, Cécile SCHIFFER-MANNIOUI, Laurent POIROT, Andrew SCHARENBERG, Julianne SMITH
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Patent number: 11685935Abstract: 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: GrantFiled: May 28, 2014Date of Patent: June 27, 2023Assignee: CELLECTISInventors: Philippe Duchateau, Claudia Bertonati
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Patent number: 11674155Abstract: 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: GrantFiled: August 5, 2022Date of Patent: June 13, 2023Assignee: CELLECTISInventors: Jean-Pierre Cabaniols, Jean-Charles Epinat, Philippe Duchateau
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Patent number: 11624072Abstract: Materials and methods for creating canola (e.g., Brassica napus) lines having oil with increased oleic acid content are provided herein.Type: GrantFiled: July 9, 2019Date of Patent: April 11, 2023Assignee: CellectisInventors: Wenzheng Zhang, Feng Zhang
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Patent number: 11603539Abstract: 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: GrantFiled: May 13, 2013Date of Patent: March 14, 2023Assignee: CELLECTISInventors: Roman Galetto, Agnès Gouble, Stéphanie Grosse, Cécile Mannioui, Laurent Poirot, Andrew Scharenberg, Julianne Smith
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Publication number: 20230056268Abstract: 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: ApplicationFiled: April 8, 2022Publication date: February 23, 2023Applicant: CELLECTISInventors: Roman GALETTO, Agnes GOUBLE, Stephanie GROSSE, Cécile SCHIFFER-MANNIOUI, Laurent POIROT, Andrew SCHARENBERG, Julianne SMITH