Phenotyping of Gap-Junctional Coupling in the Mouse Retina.

Phenotyping of Gap-Junctional Coupling in the Mouse Retina.
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小鼠视网膜间隙连接耦合的表型分析

DOI:
10.1007/978-1-4939-7720-8_17
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发表时间:
2018
影响因子:
--
通讯作者:
Dedek K
Dedek K
中科院分区:
--
文献类型:
--
作者:
Meyer A;Yadav SC;Dedek K

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在哺乳动物视网膜中,由连接蛋白构成的间隙连接存在于所有神经元细胞类型中,对视杆光感受器信号的传递、spike同步、噪声抑制和信号平均都很重要。有几种方法可用于评估视网膜间隙连接耦合:两个相邻细胞的同时电记录,切割加载和细胞内注射间隙连接渗透性示踪剂。在这里,我们重点关注后者,因为它允许精确靶向感兴趣的细胞,并且适合于评估各种视网膜细胞类型中的示踪剂耦合,例如水平细胞,无突细胞和神经节细胞。示踪剂偶联实验通常在完整的视网膜上进行,可以提供有关偶联程度、突触伴侣的身份以及(当与免疫组织化学或药理学结合时)潜在连接蛋白或间隙连接调节的信息。
In the mammalian retina, gap junctions, made of connexin proteins, are found in all neuronal cell types and are important for the transmission of rod photoreceptor signals, spike synchronization, noise reduction, and signal averaging. There are several methods available to assess gap junctional coupling in the retina: simultaneous electrical recordings from two adjacent cells, cut-loading, and intracellular injection of gap junction-permeable tracers. Here, we focus on the latter as it allows precise targeting of the cell of interest and is suitable to assess tracer coupling in a wide variety of retinal cell types, e.g., horizontal cells, amacrine cells, and ganglion cells. Tracer coupling experiments are usually performed in the intact retina and can provide information on the extent of coupling, the identity of synaptic partners, and (when combined with immunohistochemistry or pharmacology) the underlying connexin or the regulation of gap junctions.
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发表时间: 2012-05-16
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