Anxiety-like behaviors in mice lacking GIT2.

Anxiety-like behaviors in mice lacking GIT2.
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DOI:
10.1016/j.neulet.2008.12.034
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发表时间:
2009-02-20
影响因子:
2.5
通讯作者:
Premont RT
Premont RT
中科院分区:
医学4区
文献类型:
--
作者:
Schmalzigaug R;Rodriguiz RM;Phillips LE;Davidson CE;Wetsel WC;Premont RT

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G蛋白偶联受体激酶相互作用因子2(GIT 2)是一种信号传导支架蛋白,也作为ADP核糖基化因子(Arf)小GTP结合蛋白的GTP酶激活蛋白(GAP)发挥作用。GIT 2参与G蛋白偶联受体运输和细胞粘附和迁移的调节。为了评估体内GIT 2可能的神经行为功能,我们评估了GIT 2敲除(KO)小鼠的情绪和情绪异常。雄性和雌性GIT 2-KO小鼠在零迷宫和光暗出现测试中表现出焦虑样行为。GIT 2-KO雄性动物的尾部悬吊不动时间缩短,但GIT 2-KO雌性动物正常。因此,GIT 2-KO小鼠在不存在抑郁样反应的情况下表现出焦虑样行为。
G protein-coupled receptor kinase-interactor 2 (GIT2) is a signaling scaffold protein that also functions as GTPase-activating protein (GAPs) for ADP-ribosylation factor (Arf) small GTP-binding proteins. GIT2 has been implicated in the regulation of G protein-coupled receptor trafficking and cell adhesion and migration. To evaluate possible neurobehavioral functions of GIT2 in vivo, we evaluated GIT2-knockout (KO) mice for abnormalities in emotionality and mood. Male and female GIT2-KO mice presented with anxiety-like behaviors in the zero-maze and light-dark emergence tests. Immobility times in tail suspension were reduced in GIT2-KO males, but were normal in GIT2-KO females. Hence, GIT2-KO mice display anxiety-like behavior in an absence of depressive-like responses.
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