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.
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
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.
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.
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
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
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.
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
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
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
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
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
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.
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
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.
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
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.
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
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