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Scientists learn how changes in a language gene result in speech problems

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A new study shows that when the gene Foxp2 is knocked out in mouse striatal neurons (top right panel), the protein dynactin (stained red) and the chain that binds dynactin and dynein (stained green) show abnormal spacing compared to wildtype neurons (top left panel). This suggests that the functions of the motor complexes formed by these proteins may be impaired. The bottom panels show close-ups of the green and red labeled molecules.

Human speech and language are among the most complex motor and cognitive abilities. The discovery of a mutation in the transcription factor FOXP2 in KE family members with speech disturbances has been a landmark example of the genetic control of vocal communication in humans. Cellular mechanisms underlying this control have remained unclear. A new study […]

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