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Int J Biol Sci 2016; 12(8):911-916. doi:10.7150/ijbs.15172

Research Paper

Generation of a Mouse Full-length Balancer with Versatile Cassette-shuttling Selection Strategy

Zhisheng Ye1*, Lei Sun1*, Rongbo Li1*, Min Han1,2, Yuan Zhuang1,3, Xiaohui Wu1✉, Tian Xu1,4✉

1. State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Collaborative Innovation Center for Genetics and Development, Fudan-Yale Biomedical Research Center, Institute of Developmental Biology and Molecular Medicine, Fudan University, Shanghai 200433, China.
2. Howard Hughes Medical Institute, Department of Molecular, Cellular, Developmental Biology, University of Colorado at Boulder, Boulder, CO 80309, USA.
3. Department of Immunology, Duke University Medical Center, Durham, NC 27710, USA.
4. Howard Hughes Medical Institute, Department of Genetics, Yale University School of Medicine, New Haven, CT 06536, USA.
* These authors contribute equally to this work.


Balancer chromosomes are important tools for a variety of genetic manipulations in lower model organisms, owing to their ability to suppress recombination. In mouse, however, such effort has not been accomplished, mostly due to the size of the chromosomes and the complexity of multiple step chromosomal engineering. We developed an effective and versatile cassette-shuttling selection (CASS) strategy involving only two selection markers to achieve the sequential production of multiple large inversions along the chromosome. Using this strategy, we successfully generated the first full-length balancer in mice and showed that Balancer 17M-GFP can efficiently suppress recombination. Our study has not only generated a useful genetic resource, but also provided a strategy for constructing mammalian balancer chromosomes.

Keywords: Mouse full-length balancer chromosome, cassette-shuttling selection (CASS) strategy, 17M-GFP.

This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY-NC) License. See for full terms and conditions.
How to cite this article:
Ye Z, Sun L, Li R, Han M, Zhuang Y, Wu X, Xu T. Generation of a Mouse Full-length Balancer with Versatile Cassette-shuttling Selection Strategy. Int J Biol Sci 2016; 12(8):911-916. doi:10.7150/ijbs.15172. Available from