Brain phenotype of transgenic mice overexpressing cystathionine β-synthase.
Brain phenotype of transgenic mice overexpressing cystathionine β-synthase.
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DOI:
10.1371/journal.pone.0029056
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
London J
中科院分区:
文献类型:
--
作者:
Régnier V;Billard JM;Gupta S;Potier B;Woerner S;Paly E;Ledru A;David S;Luilier S;Bizot JC;Vacano G;Kraus JP;Patterson D;Kruger WD;Delabar JM;London J
The cystathionine β-synthase (CBS) gene, located on human chromosome 21q22.3, is a good candidate for playing a role in the Down Syndrome (DS) cognitive profile: it is overexpressed in the brain of individuals with DS, and it encodes a key enzyme of sulfur-containing amino acid (SAA) metabolism, a pathway important for several brain physiological processes. Here, we have studied the neural consequences of CBS overexpression in a transgenic mouse line (60.4P102D1) expressing the human CBS gene under the control of its endogenous regulatory regions. These mice displayed a ∼2-fold increase in total CBS proteins in different brain areas and a ∼1.3-fold increase in CBS activity in the cerebellum and the hippocampus. No major disturbance of SAA metabolism was observed, and the transgenic mice showed normal behavior in the rotarod and passive avoidance tests. However, we found that hippocampal synaptic plasticity is facilitated in the 60.4P102D1 line. We demonstrate that CBS overexpression has functional consequences on hippocampal neuronal networks. These results shed new light on the function of the CBS gene, and raise the interesting possibility that CBS overexpression might have an advantageous effect on some cognitive functions in DS.
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影响因子:
4.4
作者:
Conti, Anna;Fabbrini, Floriana;Nitsch, Lucio
通讯作者:
Nitsch, Lucio
影响因子:
3.4
作者:
del Olmo, N;Suárez, LM;Solís, JM
通讯作者:
Solís, JM
影响因子:
2.6
作者:
Butler, Christine;Knox, Aaron J.;Patterson, David
通讯作者:
Patterson, David
DOI:
10.1016/j.bbrc.2005.10.118
发表时间:
2005-12-23
影响因子:
3.1
作者:
Ichinohe, A;Kanaumi, T;Kimura, H
通讯作者:
Kimura, H
影响因子:
4.7
作者:
Gadalla MM;Snyder SH
通讯作者:
Snyder SH