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      1. Author :
        Yoshimura, Yuki; Nakamura, Kazuomi; Endo, Takeshi; Kajitani, Naoyo; Kazuki, Kanako; Kazuki, Yasuhiro; Kugoh, Hiroyuki; Oshimura, Mitsuo; Ohbayashi, Tetsuya
      2. Title :
        Mouse embryonic stem cells with a multi-integrase mouse artificial chromosome for transchromosomic mouse generation
      3. Type :
        Journal Article
      4. Year :
        2015
      5. Publication :
        Transgenic research
      6. Products :
      7. Volume :
        N/A
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        Transchromosomic mice; Mouse artificial chromosome; Gene delivery; IVIS; IVIS BLI ex vivo
      12. Abstract :
        The mouse artificial chromosome (MAC) has several advantages as a gene delivery vector, including stable episomal maintenance of the exogenous genetic material and the ability to carry large and/or multiple gene inserts including their regulatory elements. Previously, a MAC containing multi-integration site (MI-MAC) was generated to facilitate transfer of multiple genes into desired cells. To generate transchromosomic (Tc) mice containing a MI-MAC with genes of interest, the desired genes were inserted into MI-MAC in CHO cells, and then the MI-MAC was transferred to mouse embryonic stem (mES) cells via microcell-mediated chromosome transfer (MMCT). However, the efficiency of MMCT from CHO to mES cells is very low (<10−6). In this study, we constructed mES cell lines containing a MI-MAC vector to directly insert a gene of interest into the MI-MAC in mES cells via a simple transfection method for Tc mouse generation. The recombination rate of the GFP gene at each attachment site (FRT, PhiC31attP, R4attP, TP901-1attP and Bxb1attP) on MI-MAC was greater than 50 % in MI-MAC mES cells. Chimeric mice with high coat colour chimerism were generated from the MI-MAC mES cell lines and germline transmission from the chimera was observed. As an example for the generation of Tc mice with a desired gene by the MI-MAC mES approach, a Tc mouse strain ubiquitously expressing Emerald luciferase was efficiently established. Thus, the findings suggest that this new Tc strategy employing mES cells and a MI-MAC vector is efficient and useful for animal transgenesis.
      13. URL :
        N/A
      14. Call Number :
        PKI @ user @ 9633
      15. Serial :
        20220