Patch-clamping Drosophila sensory neurons.
Patch-clamping Drosophila sensory neurons.
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膜片钳果蝇感觉神经元。
DOI:
10.1007/978-1-62703-351-0_30
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Boiko,Nina
中科院分区:
文献类型:
--
作者:
Kucher,Volodymyr;Eaton,BenjaminA;Stockand,JamesD;Boiko,Nina
Electrophysiological studies provide essential clues about the regulation and physiological function of ion channel proteins. Probing ion channel activity in vivo, though, often is challenging. This can limit the usefulness of such model organisms asDrosophilafor electrophysiological studies. This is unfortunate because these genetically tractable organisms represent powerful research tools that facilitate elaboration of complex questions of physiology. Here, we describe a recently developed method for recording ion channel activity inDrosophilasensory neurons. This approach is based on patch-clamping primary neuron cultures fromDrosophilaembryos. Such cultures allow the study of ion channels in different genetic backgrounds. In addition to describing how to prepare a primary neuronal cell culture fromDrosophilaembryos, we discuss, as an example of utility, analysis of Na+currents in cultured class IV multidendritic (md) sensory neurons with the patch clamp technique. Excitability of md sensory neurons, manifested as action potential firing, is revealed with whole-cell current-clamping. Voltage-clamping class IV md neurons revealed the activity of the voltage-gated Na+channel,paralytic. Moreover, challenging class IV md neurons with acidic pH activates acid-sensing inward Na+currents. Genetic manipulation ofDrosophilacombined with this electrophysiological readout of activity identifies pickpocket1 (Ppk1), a member of the Deg/ENaC channel family, as responsible for conducting an acid-sensing Na+current in class IV md sensory neurons.
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DOI:
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1978
期刊:
Journal of embryology and experimental morphology
影响因子:
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作者:
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通讯作者:
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影响因子:
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影响因子:
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