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Published on: August 12, 2019
Chromosome substitution strains: a new way to study genetically complex traits
Annie E Hill1, Eric S Lander, Joseph H Nadeau
1Whitehead Institute for Biomedical Research, Cambridge, MA, USA.
Methods in Molecular Medicine
|October 31, 2006
Summary
Chromosome substitution strains (CSSs) accelerate the discovery of genes underlying complex traits and diseases. These mouse models offer powerful genetic tools for dissecting multifactorial conditions and their functional impacts.
Area of Science:
- Genetics
- Genomics
- Animal Models
Background:
- Multifactorial traits and heritable diseases result from complex interactions between genetic variants and environmental factors.
- Mouse models are crucial for studying these conditions due to genetic and physiological similarities to humans and available genetic resources.
- Existing resources can be augmented by novel approaches for dissecting complex genetic architectures.
Purpose of the Study:
- To introduce and highlight the utility of Chromosome Substitution Strains (CSSs) as a powerful resource for studying multigenic traits.
- To demonstrate how CSSs can enhance the detection and characterization of genes influencing complex biological traits and diseases.
- To accelerate the discovery of quantitative trait loci (QTLs) and understand gene interactions.
Main Methods:
- Development of a panel of inbred mouse strains, each carrying a single chromosome substitution from a donor strain onto a recipient background.
- Utilizing these CSSs to partition the genome and enable unique experimental designs.
- Applying statistical power inherent in CSSs for genetic analysis.
Main Results:
- CSSs facilitate the easy detection of quantitative trait loci (QTLs) with even weak genetic effects.
- These strains accelerate the process of making linkage and congenic crosses.
- Gene interactions underlying complex traits can be readily characterized using CSSs.
Conclusions:
- Chromosome substitution strains (CSSs) represent a significant advancement in genetic research for complex traits.
- CSSs provide a powerful and versatile platform for accelerating the discovery and functional characterization of genes involved in multifactorial diseases.
- The utility of CSSs is demonstrated by published studies, with ongoing discovery of new applications.
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