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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Generation of a mouse model for citrullinemia by targeted disruption of the argininosuccinate synthetase gene.

Argininosuccinate synthetase (ASS) is a urea cycle enzyme that forms argininosuccinate from citrulline and aspartate. Mutations at the ASS locus in man cause the inherited disease, citrullinemia. Citrullinemia is inherited as an autosomal recessive trait and is characterized, biochemically, by elevated levels of blood citrulline and ammonia and often results in early neonatal death if untreated. We have used homologous recombination in embryonic stem cells to generate a line of mice having a targeted disruption of the Ass gene. Homozygous mutant animals develop high levels of blood citrulline, become hyperammonemic, and die within one or two days after birth. Because the phenotype of the mutant mice closely resembles that of humans who lack the ASS enzyme, we expect that these mice will serve as a useful model for exploring new treatments for citrullinemia including somatic gene therapy.[1]

References

  1. Generation of a mouse model for citrullinemia by targeted disruption of the argininosuccinate synthetase gene. Patejunas, G., Bradley, A., Beaudet, A.L., O'Brien, W.E. Somat. Cell Mol. Genet. (1994) [Pubmed]
 
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