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Induced chromosome deletions cause hypersociability and other features of Williams-Beuren syndrome in mice

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Induced chromosome deletions cause hypersociability and other features of Williams-Beuren syndrome in mice.pdf (1.465Mb)
Date
2009
Author
Li, Hong Hua
Roy, Madhuri
Kuscuoglu, Unsal
Spencer, Corinne M.
Halm, Birgit
Harrison, Katharine C.
Bayle, Joseph H.
Splendore, Alessandra
Ding, Feng
Meltzer, Leslie A.
Wright, Elena
Paylor,
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  • 生命科学-已发表论文 [5901]
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Abstract
The neurodevelopmental disorder Williams-Beuren syndrome is caused by spontaneous similar to 1.5 Mb deletions comprising 25 genes on human chromosome 7q11.23. To functionally dissect the deletion and identify dosage-sensitive genes, we created two half-deletions of the conserved syntenic region on mouse chromosome 5G2. Proximal deletion (PD) mice lack Gtf2i to Limk1, distal deletion (DD) mice lack Limk1 to Fkbp6, and the double heterozygotes (D/P) model the complete human deletion. Gene transcript levels in brain are generally consistent with gene dosage. Increased sociability and acoustic startle response are associated with PD, and cognitive defects with DD. Both PD and D/P males are growth-retarded, while skulls are shortened and brains are smaller in DD and D/P. Lateral ventricle (LV) volumes are reduced, and neuronal cell density in the somatosensory cortex is increased, in PD and D/P. Motor skills are most impaired in D/P. Together, these partial deletion mice replicate crucial aspects of the human disorder and serve to identify genes and gene networks contributing to the neural substrates of complex behaviours and behavioural disorders.
Citation
Embo Molecular Medicine,1(1):50-65
URI
https://dspace.xmu.edu.cn/handle/2288/64916

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