Title |
Efficient generation of Rosa26 knock-in mice using CRISPR/Cas9 in C57BL/6 zygotes
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Published in |
BMC Biotechnology, January 2016
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DOI | 10.1186/s12896-016-0234-4 |
Pubmed ID | |
Authors |
Van Trung Chu, Timm Weber, Robin Graf, Thomas Sommermann, Kerstin Petsch, Ulrike Sack, Pavel Volchkov, Klaus Rajewsky, Ralf Kühn |
Abstract |
The CRISPR/Cas9 system is increasingly used for gene inactivation in mouse zygotes, but homology-directed mutagenesis and use of inbred embryos are less established. In particular, Rosa26 knock-in alleles for the insertion of transgenes in a genomic 'safe harbor' site, have not been produced. Here we applied CRISPR/Cas9 for the knock-in of 8-11 kb inserts into Rosa26 of C57BL/6 zygotes. We found that 10-20 % of live pups derived from microinjected zygotes were founder mutants, without apparent off-target effects, and up to 50 % knock-in embryos were recovered upon coinjection of Cas9 mRNA and protein. Using this approach, we established a new mouse line for the Cre/loxP-dependent expression of Cas9. Altogether, our protocols and resources support the fast and direct generation of new Rosa26 knock-in alleles and of Cas9-mediated in vivo gene editing in the widely used C57BL/6 inbred strain. |
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Geographical breakdown
Country | Count | As % |
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Australia | 2 | 33% |
United Kingdom | 2 | 33% |
Spain | 1 | 17% |
United States | 1 | 17% |
Demographic breakdown
Type | Count | As % |
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Scientists | 3 | 50% |
Members of the public | 2 | 33% |
Science communicators (journalists, bloggers, editors) | 1 | 17% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Germany | 3 | <1% |
United Kingdom | 2 | <1% |
United States | 2 | <1% |
Italy | 1 | <1% |
Unknown | 607 | 99% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 132 | 21% |
Researcher | 128 | 21% |
Student > Master | 77 | 13% |
Student > Bachelor | 49 | 8% |
Student > Doctoral Student | 24 | 4% |
Other | 74 | 12% |
Unknown | 131 | 21% |
Readers by discipline | Count | As % |
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Biochemistry, Genetics and Molecular Biology | 187 | 30% |
Agricultural and Biological Sciences | 151 | 25% |
Neuroscience | 38 | 6% |
Medicine and Dentistry | 34 | 6% |
Immunology and Microbiology | 25 | 4% |
Other | 44 | 7% |
Unknown | 136 | 22% |