The Mouse Genetics Engineering Center (Centre d’Ingénierie Génétique Murine, CIGM) is the Institut Pasteur’s transgenic mouse core facility. Since its creation in 2003, the CIGM aims to generate new models of transgenic mice by classical or targeted transgenesis. Classical (additive) transgenesis, which includes lentiviral transgenesis, is based on a random insertion of an exogenous gene. Targeted transgenesis consists in a deletion or a specific modification in an endogenous locus using homologous recombination in Embryonic Stem (ES) cells or, more recently, by directly using specific nucleases. Preferentially used by the Institut Pasteur scientific community, the services of CIGM are also available to outside customers interested in new transgenic, knock-down, knock-out (KO) or knock-in (KI) mouse/rat models. The core facility also provides expert advice regarding the design of gene constructs suitable for additive/targeted transgenesis and homologous recombination experiments.
Microscope +Transferman NK2 Micromanipulators and Femtojet, Cell Tram Air, Cell Tram Oil MIcroinjectors. The system (manual at the microscope level) allow, like the ASTP station above-mentioned, the storage and recall of positions and the […]
The diascopic stereomicroscope allows embryo counting and the preparation of the reimplantation pipette. The stereomicroscope coupled to a coaxial Episcopic Illuminator (Fibber Optic Light Source) offers bright illumination over the entire surface of the […]
The electroporator (with the appropriated parameters) gives the necessary pulse for the entering of the gene targeting vector or recombinase-expressing plasmid into the Embryonic Stem (ES) Cells.
The laser module, attached just like a typical objective, permits non-contact ablation of targeted membranes. It is mainly used in transgenesis for ablation of the zona pellucida for microinjection of eight-cell and morula stage […]
The piezo-assisted microinjection increases success rates for transgenesis by IntraCytoplasmic Sperm Injection (ICSI), where sperm are coated with exogenous DNA and injected into oocytes. The piezo impact drive, attached to the injecting micropipette holder, […]
Station including Transferman NK2 Micromanipulators and Femtojet, Cell Tram Air, Cell Tram Oil MIcroinjectors. The system combines the operation of both microscope and micromanipulators into one user-oriented control unit (first motorized integrated transgenic platform). […]
We have an increasing experience in modification on rat genome using lentiviral vectors and Zinc Finger Nucleases (ZFNs). Rat models are more convenient for surgery, due to their medium size, and constitute a robust […]
Genome modifications by CRISPR/cas9 system
The microinjection of the CRISPR/Cas9 system in one-cell embryos is actually revolutionizing the in vivo genome-engineering field because of its big efficiency for KO/ KI (when a donor DNA matrix co-injected with the CRISPR/CAS9 […]
Gene editing by specific nucleases (zinc finger nucleases-zfns, tale nucleases, CRISPR/Cas9 system)
The nucleases (ZFN pairs, TALE pairs, Cas9/CRISPR system) are microinjected, mainly in its mRNA form, into the pronucleus and/or the cytoplasm of one-cell mouse/rat embryos in order to get the desired targeted modification. These […]
Microinjection of “External” Mutant ES Cells And Subsequently Germ-Line Chimera Generation
The easy availability of modified ES cells obtained from KOMP and EUCOMM high-throughput gene-targeting mutagenesis programs (mainly JM8.N4, JM8 A3.N1 ES cell lines) has considerably increased the requests for these direct microinjections in the […]
Lentiviral transgenesis is a special type of classical/additive transgenesis. The transgene, inserted in a lentiviral construct, is microinjected directly under the zona pellucida of one-cell embryos. Then viruses are able to enter directly the […]
Targeted Transgenesis By Homologous Recombination In Embryonic Stem (ES) Cells
A gene targeting vector is transfected into the desired mouse ES cells to modify an endogenous gene by homologous recombination. The mutant ES cells thus obtained are subsequently microinjected into mouse blastocysts for the […]
Classical/Additive Transgenesis by Microinjection
This type of transgenesis consists in the microinjection of the gene of interest into the pronucleus of fertilized eggs to generate transgenic mice expressing the transgene. The microinjected transgenes, which integrated randomly into the […]
2022An intranasal lentiviral booster reinforces the waning mRNA vaccine-induced SARS-CoV-2 immunity that it targets to lung mucosa., Mol Ther 2022 Apr; (): .
2021Brain cross-protection against SARS-CoV-2 variants by a lentiviral vaccine in new transgenic mice., EMBO Mol Med 2021 12; 13(12): e14459.
2021De novo germline mutation in the dual specificity phosphatase 10 gene accelerates autoimmune diabetes., Proc Natl Acad Sci U S A 2021 11; 118(47): .
2021The antitumoral effects of chemerin are independent from leukocyte recruitment and mediated by inhibition of neoangiogenesis., Oncotarget 2021 Sep; 12(19): 1903-1919.
2021The HSP90/R2TP assembly chaperone promotes cell proliferation in the intestinal epithelium., Nat Commun 2021 08; 12(1): 4810.
2021Dynamics of myogenic differentiation using a novel Myogenin knock-in reporter mouse., Skelet Muscle 2021 Feb; 11(1): 5.
2021The ring finger protein 213 gene (Rnf213) contributes to Rift Valley fever resistance in mice., Mamm Genome 2021 02; 32(1): 30-37.
2021Dissection of the Fgf8 regulatory landscape by in vivo CRISPR-editing reveals extensive intra- and inter-enhancer redundancy., Nat Commun 2021 01; 12(1): 439.
2021Lysosomal Acid Lipase Drives Adipocyte Cholesterol Homeostasis and Modulates Lipid Storage in Obesity, Independent of Autophagy., Diabetes 2021 01; 70(1): 76-90.
2020Mitochondrial AIF loss causes metabolic reprogramming, caspase-independent cell death blockade, embryonic lethality, and perinatal hydrocephalus., Mol Metab 2020 10; 40(): 101027.
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Phone: 01 44 38 95 66 Email: email@example.com Centre d’Ingénierie Génétique Murine Bâtiment François Jacob 1er étage 28, rue du Dr. Roux 75015, Paris France