Abstract: An object of the invention is to provide methods and compositions relating to a vaccine against prostate cancer which includes a non-human-primate PSA for administration to humans to provide an immune response against human PSA. More generally, an object of the invention is to provide methods and compositions relating to using a non-human primate xenogeneic antigen (e.g. protein) in a human, wherein, with respect to the non-human primate xenogeneic antigen that is used, there are relatively few interspecies differences between the non-human primate xenogeneic antigen and the human self antigen in order to induce an optimal immune response in the human to its native self antigen.
Type:
Grant
Filed:
June 21, 2006
Date of Patent:
October 23, 2012
Assignee:
Cellectis S.A.
Inventors:
Christoph Leder, Alan D. King, Maxim Pavlenko, Pavel Pisa
Abstract: The invention relates to an anti-bacterial composition, especially for controlling gram-negative bacteria, containing a combination of: a) at least one peptide of between 10 and 25 amino acid residues comprising: i) two positively charged domains with a neutral pH consisting of between 3 and 9 amino acid residues, at least two thirds thereof being cationic amino acids, ii) a group of two to three non-cationic amino acid residues located between said positively charged domains, iii) a group of between 0 and 10, preferably between 0 and 5, amino acid residues selected from the group comprising non-hydrophobic amino acids and positively charged amino acids, located at one of the terminal ends N or C of the peptide, a positively charged amino acid residue, however, not being directly adjacent to the positively charged domains; and b) at least one anti-bacterial compound.
Abstract: Method of preparing I-CreI meganuclease variants having a modified cleavage specificity, variants obtainable by said method and their applications either for cleaving new DNA target or for genetic engineering and genome engineering for non-therapeutic purposes. Nucleic acids encoding said variants, expression cassettes comprising said nucleic acids, vectors comprising said expression cassettes, cells or organisms, plants or animals except humans, transformed by said vectors.
Abstract: Meganuclease variants which cleave at least one target in the provirus of a retrovirus and in particular which cleave the genomic insertion of the provirus. The present invention in particular relates to meganuclease variants which cleave the provirus of the Human Immunodeficiency Virus genome following genomic insertion. Vector encoding such variants, as well as to a cell or multi-cellular organism modified by such a vector and use of said meganuclease variants and derived products for genome engineering and for in vivo and ex vivo (gene cell therapy) genome therapy.
Abstract: A method for modulating double-strand break-induced mutagenesis at a genomic locus of interest in a cell, thereby giving new tools for genome engineering, including therapeutic applications and cell line engineering. A method for modulating double-strand break-induced mutagenesis, concerns the identification of effectors that modulate double-strand break-induced mutagenesis by use of interfering agents; these agents are capable of modulating double-strand break-induced mutagenesis through their respective direct or indirect actions on said effectors. Methods of using these effectors, interfering agents and derivatives, respectively, by introducing them into a cell in order to modulate and more particularly to increase double-strand break-induced mutagenesis. Specific derivatives of identified effectors and interfering agents, vectors encoding them, compositions and kits comprising such derivatives for modulating or increasing double-strand break-induced mutagenesis.
Type:
Application
Filed:
February 6, 2012
Publication date:
September 27, 2012
Applicant:
CELLECTIS SA
Inventors:
Fabien Delacote, Philippe Duchateau, Christophe Perez-Michaut
Abstract: An I-CreI variant, wherein at least one of the two 1-Cre1 monomers has at least two substitutions, one in each of the two functional subdomains of the LAGLIDADG core domain situated from positions 26 to 40 and 44 to 77 of I-CreI, said variant being able to cleave a DNA target sequence from the genome of a non-integrating virus, in particular herpes simplex virus (HSV) or Hepatitis B virus (HBV) for use in genome engineering and for in vivo and ex vivo (gene cell therapy) genome therapy as well as the treatment of a virus infection.
Type:
Application
Filed:
May 26, 2010
Publication date:
July 5, 2012
Applicant:
CELLECTIS
Inventors:
André Choulika, Frédéric Cedrone, Julianne Smith
Abstract: I-DmoI derivatives with enhanced cleavage activity at 37° C., said mutant comprising a sequence of a mutant of a I-DmoI endonuclease or a chimeric 5 derivative thereof including at least the first I-DmoIdomain, said sequence comprising the sub-situation of at least: (i) one of the residues in positions 4, 20, 49, 52, 92, 94 and/or 95 of said first I-DmoIdomain, and/or (ii) one of the residues in positions 101, 102, and/or 109 of the linker or the beginning of the second domain of I-DmoI, if present. 10 Polynucleotide encoding said derivatives, cell, animal or plant comprising said polynucleotide and use thereof for isolating meganucleases with new DNA target specificity.
Abstract: This patent application relates to hybrid and/or single-chain rare-cutting endonucleases, called meganucleases, which recognize and cleave a specific nucleotide sequence, to polynucleotide sequences encoding for said rare-cutting endonucleases, to a vector comprising one of said polynucleotide sequences, to a cell or animal comprising one of said polynucleotide sequences or said rare-cutting endonucleases, to a process for producing one of said rare-cutting endonucleases and any use of the disclosed products and methods. More particularly, this invention contemplates any use of such rare-cutting endonuclease for genetic engineering and gene therapy.
Type:
Grant
Filed:
March 14, 2003
Date of Patent:
June 26, 2012
Assignee:
Cellectis S.A.
Inventors:
Sylvain Arnould, Patrick Chames, Andre Choulika, Jean-Charles Epinat, Emmanuel Lacroix
Abstract: The present invention concerns a chimeric polypeptide comprising: (i) a first domain comprising an amino-acid sequence facilitating active transport across a biological membrane by the binding to an glycosaminoglycan, which is selected from the group consisting of a) (XBBBXXBX)n; (XBBXBX)n; c) (BBXmBBXp)n; d) (XBEXXTBX)n; e) (BXmBB)n; f) (BmXX)n or g) an antibody fragment, wherein each B is independently a basic amino acid preferably lysine or arginine; each X is independently a non-basic amino acid preferably hydrophobic amino acid; each m is independently an integer from zero to five; each n is independently an integer between one and ten; and each p is independently an integer between zero to five; and (ii) a second domain comprises an anti-activated RAS neutralizing antibody, fragment or derivative thereof; a polynucleotide encoding said polypeptide; a pharmaceutical composition comprising said polynucleotide or said polypeptide; and the use of said polypeptide for the manufacture of a medicament for trea
Abstract: The invention relates to a set of genetic constructs which allow the efficient and reproducible introduction of a specific nucleotide sequence at a fixed position in the genome by generating a double strand break at a specific position in the genome using a meganuclease and so stimulating a homologous recombination event at this locus between the genomic site and a transfected donor sequence. The present invention also relates to methods using these constructs and to these materials in the form of a kit.
Type:
Application
Filed:
October 23, 2009
Publication date:
October 27, 2011
Applicant:
Cellectis
Inventors:
Jean-Pierre Cabaniols, André Choulika, Christophe Delenda
Abstract: An 1-Cre1 variant, wherein one of the two 1-Cre1 monomers has at least two substitutions, one in each of the two functional subdomains of the LAGLIDADG core domain situated respectively from positions 28 to 40 and 44 to 77 of 1-Cre1, said variant being able to cleave a DNA target sequence from the Glutamine Synthetase gene. Use of said variant and derived products for improving expression system for the production of recombinant protein.
Abstract: Method to generate and select a meganuclease having at least two altered characteristics in comparison to a parent meganuclease, comprising the steps: a. constructing from a parent meganuclease, a first series of variants which differ from said parent meganuclease by at least one acid amino substitution; b. screening the variants from said first series of step a. and selecting those which have a first altered characteristic; c. constructing from the selected variants of step b. a second series of variants having a least one other amino acid substitution; d. screening the variants from said series of step b. and selecting those which have said first altered characteristic and a second altered characteristic. Polypeptide obtained from said method.
Type:
Application
Filed:
February 9, 2009
Publication date:
August 25, 2011
Applicant:
CELLECTIS
Inventors:
Frederic Paques, Sylvestre Grizot, Philippe Duchateau
Abstract: The invention concerns an amino acid sequence capable of facilitating penetration of a substance of interest into cells and/or cell nuclei, characterized in that it is capable of reacting in vivo with aminoglycans. Optionally the sequence is derived from a protein of human origin.
Abstract: A method for engineering I-CreI homing endonuclease variants able to cleave mutant I-CreI sites having variation in positions ±8 to ±10. A I-CreI homing endonuclease variant obtainable by said method, a vector encoding said variant, a cell, an animal or a plant modified by said vector. Use of said I-CreI endonuclease variant and derived products for genetic engineering, genome therapy and antiviral therapy.
Abstract: The current invention relates to polypeptides encoding mutant I-DmoI derivatives with enhanced cleavage activity and altered sequence specificity and uses of these polypeptides. These polypeptides comprise at least the first I-DmoI domain, and the peptide sequence comprises the substitution of at least one of residues 15, 19 and/or 20 as well as at least one of the residues in positions 27, 29, 33, 35, 37, 75, 76, 77, 81 of the first I-DmoI domain.
Abstract: Heterodimeric meganuclease comprising two domains of different meganucleases which are in two separate polypeptides, said heterodimeric meganuclease being able to cleave a chimeric DNA target sequence comprising one different half of each parent meganuclease DNA target sequence. Use of said herodimeric meganuclease and derived products for genetic engineering, genome therapy and antiviral therapy.
Abstract: An I-CreI variant, wherein at least one of the two I-CreI monomers has at least two substitutions, one in each of the two functional subdomains of the LAGLIDADG core domain situated respectively from positions 26 to 40 and 44 to 77 of I-CreI, said variant being able to cleave a DNA target sequence from the human IL2RG gene. Use of said variant and derived products for the prevention and the treatment of X-linked severe combined immunodeficiency.
Abstract: Method of preparing I-CreI meganuclease variants having a modified cleavage specificity, variants obtainable by said method and their applications either for cleaving new DNA target or for genetic engineering and genome engineering for non-therapeutic purposes. Nucleic acids encoding said variants, expression cassettes comprising said nucleic acids, vectors comprising said expression cassettes, cells or organisms, plants or animals except humans, transformed by said vectors.
Abstract: Method of preparing 1-CreI meganuclease variants having a modified cleavage specificity, variants obtainable by said method and their applications either for cleaving new DNA target or for genetic engineering and genome engineering for non-therapeutic purposes. Nucleic acids encoding said variants, expression cassettes comprising said nucleic acids, vectors comprising said expression cassettes, cells or organisms, plants or animals except humans, transformed by said vectors.
Abstract: An I-MsoI homing endonuclease variant able to cleave mutant I-MsoI sites having variation at positions ±8 to ±10, a vector encoding said variant, a cell, an animal or a plant modified by said vector. Use of said I-MsoI endonuclease variant and derived products for genetic engineering, genome therapy and antiviral therapy.