Photorelease of GABA with Visible Light Using an Inorganic Caging Group.

Photorelease of GABA with Visible Light Using an Inorganic Caging Group.
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使用无机笼子的GABA光松饼,可见光。

DOI:
10.3389/neuro.04.002.2008
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发表时间:
2008
影响因子:
3.5
通讯作者:
Yuste, Rafael
Yuste, Rafael
中科院分区:
医学3区
文献类型:
--
作者:
Verde, Emiliano M. Rial;Zayat, Leonardo;Etchenique, Roberto;Yuste, Rafael

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我们描述了一种新型的笼状GABA化合物,使用钌配合物作为光传感器的γ-氨基丁酸(GABA)的选择性光释放。该化合物(“RuBi-GABA”)可以用可见波长激发,提供比目前使用的UV光敏笼状化合物更大的组织渗透、更小的光毒性和更快的光释放动力学。使用锥体神经元从新皮层脑切片,我们表明,RuBi-GABA uncaging诱导GABA-A受体介导的反应,内源性GABA能和γ-氨基丁酸能受体没有可检测到的副作用,并产生与动力学和空间分辨率的反应,目前可用的最好的笼状GABA化合物。最后,我们说明了两个潜在的应用RuBi-GABA uncaging:GABA受体映射,和光学沉默的神经元放电。
We describe the selective photorelease of γ-amino butyric acid (GABA) with a novel caged-GABA compound that uses a ruthenium complex as photosensor. This compound (“RuBi-GABA”) can be excited with visible wavelengths, providing greater tissue penetration, less photo-toxicity, and faster photorelease kinetics than currently used UV light-sensitive caged compounds. Using pyramidal neurons from neocortical brain slices, we show that RuBi-GABA uncaging induces GABA-A receptor-mediated responses, has no detectable side effects on endogenous GABAergic and glutamatergic receptors and generates responses with kinetics and spatial resolution comparable to the best caged GABA compounds presently available. Finally, we illustrate two potential applications of RuBi-GABA uncaging: GABA receptor mapping, and optical silencing of neuronal firing.
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发表时间: 2003-01-23
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