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1. WO2012071580 - ENHANCED GENE EXPRESSION

Publication Number WO/2012/071580
Publication Date 31.05.2012
International Application No. PCT/US2011/062163
International Filing Date 25.11.2011
IPC
C12N 15/85 2006.01
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
15Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
09Recombinant DNA-technology
63Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
79Vectors or expression systems specially adapted for eukaryotic hosts
85for animal cells
C12N 9/00 2006.01
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
9Enzymes, e.g. ligases (6.); Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating, or purifying enzymes
C12N 15/67 2006.01
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
15Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
09Recombinant DNA-technology
63Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
67General methods for enhancing the expression
CPC
C12N 15/11
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
15Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
09Recombinant DNA-technology
11DNA or RNA fragments; Modified forms thereof
C12N 15/85
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
15Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
09Recombinant DNA-technology
63Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
79Vectors or expression systems specially adapted for eukaryotic hosts
85for animal cells
C12N 15/907
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
15Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
09Recombinant DNA-technology
87Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
90Stable introduction of foreign DNA into chromosome
902using homologous recombination
907in mammalian cells
Applicants
  • APPLIED STEMCELL, INC. [US]/[US] (AllExceptUS)
  • ZHU, James [US]/[US]
  • YU, Guoliang [US]/[US]
Inventors
  • ZHU, James
  • YU, Guoliang
Agents
  • ZHU, James
Priority Data
61/417,27225.11.2010US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ENHANCED GENE EXPRESSION
(FR) AMPLIFICATION DE L'EXPRESSION D'UN GÈNE
Abstract
(EN)
The present disclosure is directed to a novel, unexpected approach of expressing exogenous gene(s) at increased levels by predictably, optionally irreversibly, incorporating the gene(s) into a region of increased gene expression (RIDGE) on a chromosome of a host cell. This approach is accomplished by identification of RIDGE(s). and further by integration of integrase-specific sites (e.g., attP or attB) in the presence of or mediated by integrase. The approach renders a high level of gene expression; predictability of the location of the exogenous genes, elimination of genetic instability or unwanted phenotype; and reduction of time and cost in optimizing protein production in host cells, which will be every useful in the production of therapeutic, prophylactic, and diagnostic proteins.
(FR)
La présente invention concerne une approche nouvelle et inattendue de l'expression d'un ou de plusieurs gènes exogènes à un niveau supérieur par incorporation prévisible, éventuellement irréversible du ou des gènes dans une région d'expression génique amplifiée (RIDGE) sur un chromosome d'une cellule hôte. Cette approche est accomplie par l'identification des régions RIDGE et par l'intégration de sites spécifiques de l'intégrase (par exemple attP ou attB) en présence ou par l'intervention de l'intégrase. Cette approche permet d'obtenir un niveau élevé d'expression génique ; la prévisibilité de l'emplacement des gènes exogènes, l'élimination de l'instabilité génétique ou d'un phénotype non souhaité ; et la réduction de la durée et du coût de l'optimisation de la production de protéines dans les cellules hôtes, ce qui sera particulièrement utile dans la production de protéines à application thérapeutique, prophylactique et diagnostique.
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