Related Experiment Video
Updated: Jun 29, 2026
08:27
A Non-random Mouse Model for Pharmacological Reactivation of Mecp2 on the Inactive X Chromosome
Published on: May 22, 2019
Connexin-caused genetic diseases and corresponding mouse models.
Radoslaw Dobrowolski1, Klaus Willecke
1Institut für Genetik, Universität Bonn, Bonn, Germany.
Antioxidants & Redox Signaling
|October 4, 2008
Summary
Connexin gene research uses genetic disease studies and knockout mice. Newer methods insert human mutations into mouse genes to better understand connexin function and disease mechanisms.
Area of Science:
- Genetics
- Molecular Biology
- Cell Biology
Background:
- The human and mouse genomes possess numerous connexin genes, crucial for cellular communication.
- Connexin research has advanced through studying genetic diseases and creating connexin knockout mice.
Purpose of the Study:
- To review current findings from genetic disease and knockout mouse studies.
- To discuss a novel approach involving human connexin point mutations in mice.
- To elucidate the biological function and physiological contribution of connexin isoforms.
Main Methods:
- Characterization of human genetic diseases linked to connexin mutations.
- Generation and analysis of connexin knockout (null) mutated mice.
- Insertion of human connexin point mutations into orthologous mouse genes.
Main Results:
- Connexin null mutations lead to the deletion of coding regions.
- A new approach allows expression of mutated connexin proteins, maintaining interactions.
- This method offers insights into disease mechanisms by preserving protein interactions.
Conclusions:
- Understanding connexin function requires studying both disease models and gene-targeted mice.
- The insertion of human mutations into mouse genes provides a valuable tool for mechanistic studies.
- Further research aims to clarify the role of each connexin isoform in organ physiology and disease.
Related Concept Videos
02:43Mouse 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,...
02:43Mouse 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,...
01:16In-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.
02:41Lethal 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...
01:43Incomplete Dominance
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
02:32Exon Recombination
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...