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Thirty years of Mus spretus: a promising future
Lien Dejager1, Claude Libert, Xavier Montagutelli
1Department for Molecular Biomedical Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium.
Abstract:
Extensive genetic polymorphisms in Mus spretus have ensured its widespread use in many areas of genetics. With the recent increase in the number of single nucleotide polymorphisms available for laboratory mouse strains, M. spretus is becoming less appealing, in particular for genetic mapping. Although M. spretus mice are aggressive and poor breeders, they have a bright future because they provide phenotypes unobserved in laboratory strains, and tools are available for modifying their genome and dissecting the genetic architecture of complex traits. Furthermore, they provide information on fundamental genetic questions, such as the details of evolution of genomes and speciation. Here, we examine the use of M. spretus from these perspectives. The impending completion of the M. spretus genome sequence will synergize these advantages.
Insights
Despite challenges, Mus spretus remains valuable for genetic research due to unique phenotypes and genomic tools. Its genome sequencing will further enhance its utility in studying complex traits and evolution.
Area of Science:
- Genetics
- Evolutionary Biology
- Genomics
Background:
- Mus spretus has historically been crucial for genetic research due to its extensive genetic polymorphisms.
- The rise of single nucleotide polymorphisms in laboratory mouse strains has reduced the appeal of M. spretus for genetic mapping.
- M. spretus mice exhibit aggressive behavior and are difficult to breed, posing practical challenges.
Purpose of the Study:
- To re-evaluate the utility and future prospects of Mus spretus in genetic research.
- To highlight the unique advantages M. spretus offers for studying complex traits and fundamental genetic questions.
- To emphasize the impact of upcoming genomic resources on M. spretus research.
Main Methods:
- Review of current applications and limitations of Mus spretus in genetic studies.
- Analysis of the potential of M. spretus for uncovering novel phenotypes.
- Assessment of available and developing genomic tools for M. spretus.
Main Results:
- M. spretus provides access to phenotypes not found in laboratory strains.
- Genome modification tools and genetic dissection approaches are available for M. spretus.
- M. spretus contributes to understanding genome evolution and speciation.
- The forthcoming M. spretus genome sequence is expected to significantly boost its research applications.
Conclusions:
- Mus spretus retains significant value in genetics, particularly for complex trait dissection and evolutionary studies.
- Despite breeding challenges, M. spretus offers unique biological insights.
- Advancements in genomic technologies and the impending genome sequence secure a bright future for M. spretus research.
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