Generation of Monkey/Mouse Chimera with Monkey Liver by Interspecific Blastocyst Injection of Monkey induced Pluripotent Stem Cells

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Monkey iPS cell lines were established from dermal fibroblasts by transforming of reprogramming factors. The differentiation ability into triploblastic cells of the iPS cells in vitro was determined by floating cultivation of embryoid bodies. To examine the potential for xenogenic approaches in blastocyst complementation, we injected rat iPS/ES cells into mouse blastocysts generating interspecific chimeras. The interspecific chimeras between mouse and rat using a blastocyst injection technique with rat iPS/ES cells were generated. These data provide basic knowledge of principle for interspecific blastocyst complementation and for generation in vivo of organs derived from monkey iPS/ES cells using a xenogenic environment.