Related Experiment Video
Updated: Jun 27, 2026

09:35
A Protocol for Using Gene Set Enrichment Analysis to Identify the Appropriate Animal Model for Translational Research
Published on: August 16, 2017
Animal models of gene-nutrient interactions
1Monell Chemical Senses Center, Philadelphia, Pennsylvania, USA. reed@monell.org
Obesity (Silver Spring, Md.)
|December 17, 2008
Summary
Animal models, particularly mice, are crucial for studying the genetic basis of food selection. Their shared food preferences and advanced genetic tools enable rigorous research into appetite regulation.
Area of Science:
- Behavioral science
- Genetics
- Nutritional science
Background:
- Human food intake is influenced by complex factors beyond nutrition and taste, including cost, culture, and social status.
- Studying the biological determinants of human appetite is challenging due to these confounding variables.
- Animal models offer a controlled environment to investigate the genetic and behavioral aspects of food selection.
Purpose of the Study:
- To highlight the utility of animal models, specifically mice, in understanding the genetic underpinnings of food intake and appetite.
- To explore how genetic variations influence food preferences and eating behaviors.
- To complement human genetic studies by providing experimental rigor.
Main Methods:
- Utilizing mice as a model organism due to their shared food preferences with humans and advanced genetic tools.
- Leveraging a well-annotated mouse genome (Mouse Build 37), RNA expression profiles, and diverse inbred strains.
- Employing genetic manipulation techniques, such as the Cre-lox system for tissue-specific gene deletion.
Main Results:
- Mice have been successfully used to identify genotypes associated with specific food preferences, such as sweet-liking.
- Ongoing research aims to elucidate the role of genetic variation in explaining human appetite variations.
- Animal models facilitate the study of genetic determinants of food selection with experimental precision.
Conclusions:
- Mice serve as a powerful model system for dissecting the genetic architecture of food intake and appetite.
- Genetic research in animal models provides valuable insights into human eating behaviors and preferences.
- The use of animal models complements human genetic studies, advancing our understanding of appetite regulation.
Related Concept Videos
Mouse Models of Cancer Study
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
In-vitro Mutagenesis
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
Background and Environment Affect Phenotype
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
Gene-Environment Interactions
Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
Lethal Alleles
Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...

