Patents by Inventor Julien Valton

Julien Valton 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: 10472396
    Abstract: The present invention concerns new modular base-per-base specific nucleic acid binding domains (MBBBD) derived from newly identified proteins from the bacterial endosymbiont Burkholderia Rhizoxinica and their use for engineering nucleic acid processing enzymes, such as specific endonucleases or transcription activators.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: November 12, 2019
    Assignee: CELLECTIS
    Inventors: Claudia Bertonati, Philippe Duchateau, Alexandre Juillerat, George Silva, Julien Valton
  • Publication number: 20190338273
    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. Particularly, the present invention reports the characterization of TALE derived proteins that can efficiently target methylated DNA. The present invention more specifically relates to TALE derived proteins that allow activation of methylated promoters responsible for gene silencing.
    Type: Application
    Filed: April 9, 2019
    Publication date: November 7, 2019
    Applicant: CELLECTIS
    Inventors: Philippe DUCHATEAU, Julien VALTON
  • Publication number: 20190328783
    Abstract: The present invention relates to therapeutic cells for immunotherapy to treat patients with cancer. In particular, the inventors develop a method of engineering prodrug-specific hypersensitive T-cell, which can be depleted in vivo by the administration of said specific prodrug in case of occurrence of a serious adverse event. The invention opens the way to safer and tunable adoptive immunotherapy strategies for treating cancer.
    Type: Application
    Filed: April 13, 2017
    Publication date: October 31, 2019
    Inventors: Julien VALTON, Philippe DUCHATEAU, Laurent POIROT, Barbra Johnsson SASU, Arvind RAJPAL
  • Publication number: 20190316100
    Abstract: The present invention relates to new Transcription Activator-Like Effector proteins and more particularly new Transcription Activator-Like Effector Nucleases (TALENs) that can efficiently target and process nucleic acids. The present invention also concerns methods to use these new Transcription Activator-Like Effector proteins. The present invention also relates to vectors, compositions and kits in which Transcription Activator-Like Effector proteins of the present invention are used.
    Type: Application
    Filed: January 2, 2019
    Publication date: October 17, 2019
    Applicant: CELLECTIS
    Inventors: Philippe Duchateau, Alexandre Juillerat, Julien Valton, Claudia Bertonati, Jean-Charles Epinat, George H. Silva
  • Publication number: 20190290694
    Abstract: The present invention relates to gene editing methods to engineer primary immune cells that are made resistant to proteasome inhibitors, such as Bortezomib, Carfilzomib, Ixazomib, Marizomib, Delanzomib or Oporozomib, for their use in cell immunotherapy in combination with proteasome inhibitor treatments.
    Type: Application
    Filed: December 20, 2017
    Publication date: September 26, 2019
    Inventors: Anne-Sophie GAUTRON, Philippe DUCHATEAU, Laurent POIROT, Julien VALTON
  • Publication number: 20190241669
    Abstract: The invention provides CARs (CARs) that specifically bind to BCMA (B-Cell Maturation Antigen). The invention further relates to engineered immune cells comprising such CARs, CAR-encoding nucleic acids, and methods of making such CARs, engineered immune cells, and nucleic acids. The invention further relates to therapeutic methods for use of these CARs and engineered immune cells for the treatment of a condition associated with malignant cells expressing BCMA (e.g., cancer).
    Type: Application
    Filed: April 15, 2019
    Publication date: August 8, 2019
    Inventors: Tracy Chia-Chien KUO, Bijan Andre BOLDAJIPOUR, Javier Fernando CHAPARRO RIGGERS, Philippe DUCHATEAU, Roman Ariel GALETTO, Alexandre JUILLERAT, Thomas Charles PERTEL, Arvind RAJPAL, Barbra Johnson SASU, Cesar Adolfo SOMMER, Julien VALTON, Thomas John VAN BLARCOM
  • Patent number: 10301614
    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. Particularly, the present invention reports the characterization of TALE derived proteins that can efficiently target methylated DNA. The present invention more specifically relates to TALE derived proteins that allow activation of methylated promoters responsible for gene silencing.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 28, 2019
    Assignee: CELLECTIS
    Inventors: Philippe Duchateau, Julien Valton
  • Publication number: 20190151478
    Abstract: The present invention relates to therapeutic cells for immunotherapy to treat patients with cancer. In particular, the inventors develop a method of engineering drug-specific hypersensitive T-cell, which can be depleted in vivo by the administration of said specific drug in case of occurrence of a serious adverse even. The invention opens the way to standard and affordable adoptive immunotherapy strategies for treating cancer.
    Type: Application
    Filed: April 13, 2017
    Publication date: May 23, 2019
    Inventors: Julien VALTON, Veronique ZENNOU, Philippe DUCHATEAU, Laurent POIROT
  • Patent number: 10294304
    Abstract: The invention provides CARs (CARs) that specifically bind to BCMA (B-Cell Maturation Antigen). The invention further relates to engineered immune cells comprising such CARs, CAR-encoding nucleic acids, and methods of making such CARs, engineered immune cells, and nucleic acids. The invention further relates to therapeutic methods for use of these CARs and engineered immune cells for the treatment of a condition associated with malignant cells expressing BCMA (e.g., cancer).
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: May 21, 2019
    Assignee: Pfizer Inc.
    Inventors: Tracy Chia-Chien Kuo, Bijan Andre Boldajipour, Javier Fernando Chaparro Riggers, Philippe Duchateau, Roman Galetto, Alexandre Juillerat, Thomas Charles Pertel, Arvind Rajpal, Barbra Johnson Sasu, Cesar Adolfo Sommer, Julien Valton, Thomas John Van Blarcom
  • Patent number: 10239948
    Abstract: The present invention relates to a method to engineer immune cell for immunotherapy. In particular said immune cells are engineered with chimeric antigen receptors, which be activated by the combination of hypoxia and ligand extracellular binding as input signals. The invention also relates to new designed chimeric antigen receptors which are able to redirect immune cell specificity and reactivity toward a selected target exploiting the ligand-binding domain properties and the hypoxia condition. The present invention also relates to cells obtained by the present method, in particular T-cells, comprising said chimeric antigen receptors for use in cancer treatments.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: March 26, 2019
    Assignee: CELLECTIS
    Inventors: Alexandre Juillerat, Claudia Bertonati, Julien Valton, Philippe Duchateau, Laurent Poirot
  • Publication number: 20180291343
    Abstract: The present invention relates to methods for developing engineered immune cells such as T-cells for immunotherapy that have a higher potential of persistence and/or engraftment in host organism. IN particular, this method involves an inactivation of at least one gene involved in self/non self recognition, combined with a step of contact with at least one non-endogenous immunosuppressive polypeptide. The invention allows the possibility for a standard and affordable adoptive immunotherapy, whereby the risk of GvH is reduced.
    Type: Application
    Filed: March 11, 2016
    Publication date: October 11, 2018
    Applicant: Cellectis
    Inventors: Philippe DUCHATEAU, Jean-Pierre CABANIOLS, Julien VALTON, Laurent POIROT
  • Publication number: 20180171298
    Abstract: The present invention relates to methods for improving therapeutic activity of NK cell, such as their cytotoxic/cytolytic activity, to be used in immunotherapy, by gene editing. In particular, these methods comprise a step of reduction or inactivation of gene expression using specific endonuclease such as TAL-nuclease, CRISPR or Argonaute. An additional genetic modification can be performed by (over)expressing at least one gene involved in N K function. The present invention encompasses also engineered NK cell, pharmaceutical composition containing the same.
    Type: Application
    Filed: June 30, 2016
    Publication date: June 21, 2018
    Inventors: Philippe DUCHATEAU, Jean-Pierre CABANIOLS, Julien VALTON
  • Publication number: 20180051089
    Abstract: The present invention relates to a TCR KO—or TCR KO and dCK KO—engineered immune cells expressing a Chimeric Antigen Receptors (CAR) specific for CD123 that is a recombinant chimeric protein able to redirect immune cell specificity and reactivity toward CD123-expressing cells, 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 CD123 CARs are particularly suited for treating relapse refractory AML and blastic plasmacytoid dendritic cell neoplasm and for use as a treatment before bone marrow transplantation.
    Type: Application
    Filed: January 25, 2016
    Publication date: February 22, 2018
    Inventors: Roman GALETTO, Barbara Johnson SASU, Arvind RAJPAL, Philippe DUCHATEAU, Alexandre JUILLERAT, Julien VALTON, Mathieu SIMON
  • Publication number: 20180009895
    Abstract: The present invention relates to Chimeric Antigen Receptors (CAR) that are recombinant chimeric proteins able to redirect immune cell specificity and reactivity toward CLL1 positive cells. The engineered immune cells endowed with such CARs are particularly suited for immunotherapy for treating cancer, in particular leukemia.
    Type: Application
    Filed: January 25, 2016
    Publication date: January 11, 2018
    Inventors: Julianne SMITH, Julien VALTON, Philippe DUCHATEAU, Alexandre JUILLERAT, Arvind RAJPAL, Barbra Johnson SASU
  • Publication number: 20180000914
    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 an anti-HSP70 monoclonal antibody, conferring specific immunity against HSP70 positive cells. The engineered immune cells endowed with such CARs are particularly suited for treating in particular leukemia.
    Type: Application
    Filed: January 25, 2016
    Publication date: January 4, 2018
    Inventors: Julien VALTON, Philippe DUCHATEAU, Alexandre JUILLERAT, Arvind RAJPAL, Barbra Johnson SASU, Julianne SMITH
  • Publication number: 20180002435
    Abstract: A polypeptide encoding a chimeric antigen receptor (CAR) comprising at least one extracellular binding domain that comprises a scFv formed by at least a VH chain and a VL chain specific to an antigen, wherein said extracellular binding domain comprises at least one mAb-specific epitope.
    Type: Application
    Filed: January 25, 2016
    Publication date: January 4, 2018
    Inventors: Barbara Johnson SASU, Arvind RAJPAL, Philippe DUCHATEAU, Alexandre JUILLERAT, Julien VALTON
  • Publication number: 20180002427
    Abstract: The present invention relates to a new generation of chimeric antigen receptors (CAR) referred to as multi-chain CARs, which are made specific to the antigen CLL1. Such CARs aim to redirect immune cell specificity and reactivity toward malignant cells expressing the tumor antigen CLL1. The alpha, beta and gamma polypeptides composing these CARs are designed to assemble in juxtamembrane position, which forms flexible architecture closer to natural receptors, that confers optimal signal transduction. The invention encompasses the polynucleotides, vectors encoding said multi-chain CAR and the isolated cells expressing them at their surface, in particularly for their use in immunotherapy. The invention opens the way to efficient adoptive immunotherapy strategies for treating cancer, especially leukemia.
    Type: Application
    Filed: January 25, 2016
    Publication date: January 4, 2018
    Inventors: Julianne SMITH, Julien VALTON, Philippe DUCHATEAU, Alexandre JUILLERAT, Arvind RAJPAL, Barbra Johnson SASU
  • Publication number: 20170198306
    Abstract: This invention relates to materials and methods for gene editing in mammalian cells, and more particularly to methods for gene editing using DNA-guided Argonaute (Ago) interference systems (DAIS) in T-cells.
    Type: Application
    Filed: March 23, 2015
    Publication date: July 13, 2017
    Applicant: CELLECTIS
    Inventors: Julien Valton, Philippe Duchateau
  • Publication number: 20170073423
    Abstract: The present invention relates to a method to engineer immune cell for immunotherapy. In particular said immune cells are engineered with chimeric antigen receptors, which be activated by the combination of hypoxia and ligand extracellular binding as input signals. The invention also relates to new designed chimeric antigen receptors which are able to redirect immune cell specificity and reactivity toward a selected target exploiting the ligand-binding domain properties and the hypoxia condition. The present invention also relates to cells obtained by the present method, in particular T-cells, comprising said chimeric antigen receptors for use in cancer treatments.
    Type: Application
    Filed: December 19, 2014
    Publication date: March 16, 2017
    Applicant: CELLECTIS
    Inventors: Alexandre JUILLERAT, Claudia BERTONATI, Julien VALTON, Philippe DUCHATEAU, Laurent POIROT
  • Publication number: 20160361359
    Abstract: The present invention relates to the use of “off-the-shelf” allogeneic therapeutic cells for immunotherapy in conjunction with chemotherapy to treat patients with cancer. In particular, the inventors develop a method of engineering allogeneic T-cell resistant to chemotherapeutic agents. The therapeutic benefits afforded by this strategy should be enhanced by the synergistic effects between chemotherapy and immunotherapy. In particular, the present invention relates to a method for modifying T-cells by inactivating at least one gene encoding T-cell receptor component and by modifying said T-cells to confer drug resistance. The invention opens the way to standard and affordable adoptive immunotherapy strategies for treating cancer.
    Type: Application
    Filed: November 21, 2014
    Publication date: December 15, 2016
    Inventors: Julien VALTON, Philippe DUCHATEAU, David SOURDIVE