Timothy syndrome is associated with activity-dependent dendritic retraction in rodent and human neurons.

Timothy syndrome is associated with activity-dependent dendritic retraction in rodent and human neurons.
复制标题

DOI:
10.1038/nn.3307
复制
发表时间:
2013-02
影响因子:
25
通讯作者:
Dolmetsch, Ricardo E.
Dolmetsch, Ricardo E.
中科院分区:
医学1区
文献类型:
--
作者:
Krey, Jocelyn F.;Pasca, Sergiu P.;Shcheglovitov, Aleksandr;Yazawa, Masayuki;Schwemberger, Rachel;Rasmusson, Randall;Dolmetsch, Ricardo E.

文献摘要

参考文献

被引文献

相似文献

L 型电压门控钙通道 (LTC) 通过促进树突生长和树枝化在神经元发育中发挥重要作用。 CaV1.2 的点突变会导致蒂莫西综合症 (TS),这是一种与自闭症谱系障碍 (ASD) 相关的神经发育障碍。我们报告说,具有 TS 突变的通道会导致啮齿类动物神经元和来自 TS 个体的诱导多能干细胞 (iPSC) 衍生的神经元中活动依赖性树突回缩。树突回缩与通过突变体通道的钙渗透无关,与 RhoA 的异位激活有关,并受到通道相关 GTPase Gem 的过度表达的抑制。这些结果表明 CaV1.2 可以独立于 Ca2+ 激活 RhoA 信号传导,并为 TS 和其他 ASD 的细胞基础提供新的见解。
L-type voltage gated calcium channels (LTCs) play an important role in neuronal development by promoting dendritic growth and arborization. A point mutation in CaV1.2 causes Timothy Syndrome (TS), a neurodevelopmental disorder associated with autism spectrum disorders (ASD). We report that channels with the TS mutation cause activity-dependent dendrite retraction in rodent neurons and in induced pluripotent stem cell (iPSCs)– derived neurons from individuals with TS. Dendrite retraction is independent of calcium permeation through the mutant channel, is associated with ectopic activation of RhoA and is inhibited by over-expression of the channel associated GTPase Gem. These results suggest that CaV1.2 can activate RhoA signaling independently of Ca2+ and provide novel insights into the cellular basis of TS and other ASDs.
DOI: 10.1016/j.cell.2011.05.034
发表时间: 2011-06-10
期刊: Cell
影响因子: 64.5
作者:
Dolmetsch R;Geschwind DH
通讯作者: Geschwind DH
DOI: 10.1038/35079621
发表时间: 2001-06-01
期刊: NATURE
影响因子: 64.8
作者:
Béguin, P;Nagashima, K;Seino, S
通讯作者: Seino, S
DOI: 10.1016/j.ceca.2005.01.008
发表时间: 2005-05-01
期刊: CELL CALCIUM
影响因子: 4
作者:
Lohmann, C;Wong, ROL
通讯作者: Wong, ROL
DOI: 10.1073/pnas.1112667108
发表时间: 2011-09-13
影响因子: 11.1
作者:
Bader, Patrick L.;Faizi, Mehrdad;Shamloo, Mehrdad
通讯作者: Shamloo, Mehrdad
DOI: 10.1074/jbc.m401634200
发表时间: 2004-06-25
影响因子: 4.8
作者:
Oyama, F;Kotliarova, S;Ihara, Y
通讯作者: Ihara, Y