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Examples of research in which knockout mice have been useful include studying and modeling different kinds of cancer, obesity, heart disease, diabetes, arthritis, substance abuse, anxiety, aging and Parkinson's disease. Knockout mice also offer a biological and scientific context in which drugs and other therapies can be developed and tested.
The gene can be later knocked out (inactivated) at a specific time-point or tissue-type in mutant mice derived from the mutant ES Cells, by appropriate breeding to other transgenic mice. This conditionality is a key property of the entire resource, and it allows a more nuanced study of the effects of the gene-knockout.
The Mouse Genetics Project (MGP) is a large-scale mutant mouse production and phenotyping programme aimed at identifying new model organisms of disease. [1] [2] [3] [4]Based at the Wellcome Trust Sanger Institute, the project uses knockout mice most of which were generated by the International Knockout Mouse Consortium.
The International Knockout Mouse Consortium (IKMC) is a scientific endeavour to produce a collection of mouse embryonic stem cell lines that together lack every gene in the genome, and then to distribute the cells to scientific researchers to create knockout mice to study.
The Cre-Lox system is widely used to manipulate gene expression in model organisms such as mice in order to study human diseases and drug development. [3] For example, using the Cre-Lox system, researchers are able to study oncogenes and tumor suppressor genes and their role in the development and progression of cancer in mouse models.
As the figure shows, each time that the mouse with the desired trait (in this case the lack of a gene (i.e. a knockout), indicated by the presence of a positive selectable marker) is crossed with a mouse of a constant genetic background, the average percentage of the genetic material of the offspring that is derived from that constant ...
“The breeding of the mice has just created this enormous problem for him,” Dennison told CNN on Sunday. The man brought three large plastic tubs containing 73 mice to the shelter last Monday, ...
The genetically modified mouse in which a gene affecting hair growth has been knocked out (left) shown next to a normal lab mouse. A genetically modified mouse, genetically engineered mouse model (GEMM) [1] or transgenic mouse is a mouse (Mus musculus) that has had its genome altered through the use of genetic engineering techniques.