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en: GEEP Method: An Optimized Electroporation-Mediated Gene Editing Approach for Establishment of Knockout Pig Lines.

en: Methods Mol Biol.

ja: Methods Mol Biol.

en: Pigs are excellent large animal models owing to their several physiological and anatomical similarities to humans. Somatic cell nuclear transfer using gene-modified cells is the mainstream approach for generating genetically modified pigs. Recent advances in improving gene editors such as the CRISPR/Cas9 system have enabled direct gene modification in zygotes/embryos. Here, we describe the gene editing by electroporation of Cas9 protein (GEEP) method, an optimized electroporation-mediated method for the introduction of CRISPR/Cas9 into porcine zygotes/embryos. The simplicity and micromanipulation-free procedures are the major advantages of this method.