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Mouse model provides clues to human language development
Date:6/24/2009

In the brains of the mice the researchers found alterations which may be closely linked to speech and language development. Their analyses comprise part of an international study led by the Leipzig Max Planck Institute for Evolutionary Anthropology. The findings have been published in the current issue of the renowned journal Cell.

Scientists of the German Mouse Clinic at Helmholtz Zentrum Mnchen have generated and analyzed a mouse model in which parts of the human Foxp2 gene were introduced. Foxp2 is known to be a key gene for language. Since the human and chimpanzee lineages diverged, only minimal genetic alterations have occurred, even with reference to the mouse: The alterations, as scientists surmised, are closely associated with speech and language ability. However, proof on a functional level has been lacking until now.

The Helmholtz scientists in the German Mouse Clinic conduct comprehensive analyses to elucidate which organs are influenced by a gene in this case the Foxp2 gene. "It is rare for a gene to have only one function," explained Professor Martin Hrab de Angelis, director of the German Mouse Clinic. That is why a comprehensive research approach like that of the German Mouse Clinic is so crucial to ensure that relevant gene functions can be identified in the mouse phenotype.

The study of the Foxp2 mice was funded within the scope of the National Genome Research Network (NGFN). As with each mouse lineage studied in the German Mouse Clinic, the Helmholtz scientists analyzed the Foxp2 mice by screening for more than 300 parameters, including the ability to see and hear, bone density, important metabolic functions and a number of neurological functions. The mice carrying the humanized Foxp2 gene showed no physiological abnormalities. However, behavioral tests showed an altered exploratory behavior and reduced movement activity both results point to altered brain functions. Further investigations carried out by th
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Contact: Sven Winkler
presse@helmholtz-muenchen.de
49-893-187-3946
Helmholtz Zentrum Mnchen - German Research Center for Environmental Health
Source:Eurekalert

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