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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 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 complete absence or knockout of Tet3 in mouse cells leads to increased apoptosis of neurons, demonstrating how important the gene is to neuronal development. [7] In addition, Tet3 is important for repair and upkeep in mature neurons.
A BAX-1 knock-out mouse exhibits normal forebrain formation and a decreased programmed cell death in some neuronal populations and in the spinal cord, leading to an increase in motor neurons. [ 78 ] The caspase proteins are integral parts of the apoptosis pathway, so it follows that knock-outs made have varying damaging results.
An example GAL4-UAS system, with GAL4 lines and UAS reporter lines. The GAL4-UAS system is a biochemical method used to study gene expression and function in organisms such as the fruit fly . It is based on the finding by Hitoshi Kakidani and Mark Ptashne, [ 1 ] and Nicholas Webster and Pierre Chambon [ 2 ] in 1988 that Gal4 binding to UAS ...
An example of this method in action can be seen through the production of a knockout mouse. This is accomplished through the administration of one or more transgenes into a fertilized mouse oocyte’s pronucleus. Afterwards, it is reimplanted into a host mother, who then births a transgenic mouse.
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.
The International Mouse Phenotyping Consortium (IMPC) is an international scientific endeavour to create and characterize the phenotype of 20,000 knockout mouse strains. [1] [2] [3] Launched in September 2011, [1] the consortium consists of over 15 research institutes across four continents with funding provided by the NIH, European national governments and the partner institutions.