Embryos


TARGATTTM embryos are derived from one of our genetically engineered mouse models. These mouse embryos can be used as embryo donors for creating site-specific transgenic mice in a more efficient and faster way compared to traditional methods. Generating transgenic mice by conventional methods (e.g. pronuclear microinjection or lentiviral injection) has several limitations, first of which is the random insertion of the transgene. Random insertion of a transgene results in a position effect where either the transgene is prone to silencing or endogenous gene expression is disrupted. Furthermore, this position effect is compounded when transgenes are inserted in multiple copies, resulting in genomic instability at the insertion locus. Using our proprietary site-specific DNA integration technology, TARGATTTM embryos combined with our TARGATT™ Transgenic Kit (cat# AST-1001 or AST-1002), you can generate your desired transgenic mouse models with guaranteed gene expression faster.

Gentaur offers high quality H11 and ROSA26 TARGATT™ frozen embryos. Using our TARGATT™ Technology, you can generate your own knock-in mouse from H11 or ROSA26 embryos in 3 months. Our H11(Hipp11) and ROSA26 frozen embryos contain 3 straws with a total 45-60 cryopreserved embryos (8-cell stage/morula). They are shipped in a dry shipper containing liquid nitrogen. We also offer fresh H11 and ROSA26 embryos with each vial containing 25-35 fresh embryos (E3.5) in KSOM medium. We offer overnight shipping at ambient temperature. Embryos will be transferred to recipient(s) immediately upon arrival. US customers only.

 Fast & Site-Specific Knock-in Mouse Technology

If you prefer to generate a knock-in mouse model on your own, TARGATT™ Embryo (H11 or Rosa26) and Transgenic Kits (2 or 5 microinjection size) are available for purchase.

Background:

TARGATT™ technology enables highly efficient site-specific gene integration in mammalian cells and animals1, 2. This technology uses øC31 integrase to insert any gene of interest into a docking site, pre-engineered in an intergenic region and transcriptionally active genomic locus. Our TARGATT™ technology improves several aspects in the generation of transgenic cell lines and animals: (1) High integration efficiency mediated by  øC31 integrase reduces time and cost; (2) Site-specific integration at a pre-selected genomic locus eliminates position effect and ensures high level expression of the transgene; (3) Integration at intergenic region ensures that no internal genes are interrupted; (4) Single copy gene integration eliminates repeat-induced gene silencing and genomic instability; (5) Site-specific integration allows a precise comparison of the effects of the transgenes among different lines. TARGATT™ technology can be utilized for a variety of applications including reporter gene expression, gene knockdown, disease cell and animal models.