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- W2088571409 abstract "Dopaminergic PC12 cells can synthesize and release dopamine, providing a good cellular model for investigating dopamine regulation. Optogenetic stimulation of channelrhodopsin-2 provides high spatial and temporal precision for selective stimulation as a powerful neuromodulation tool for neuroscience studies. The aim of this study is to measure dopamine release from dopaminergic PC12 cells under optogenetic stimulation using electrochemical recording of self-assembled monolayers modified microelectrode with amperometric measurement in real time. The activation of PC12 cells under various optogenetic stimulation schemes are characterized by measuring single-cell Ca2+ imaging. After 10 seconds of optogenetic stimulation, the evoked intracellular Ca2+ level and dopamine current of channelrhodopsin-2-transfected PC12 cells were 1.6- and 3.5-fold higher than those of the control cells. The optogenetic stimulation effects on Ca2+ influx and dopamine release were 81% and 63% inhibition by using a Ca2+ channel antagonist Nifedipine. The results indicate that optogenetic stimulation can evoke voltage-gated Ca2+ channel-dependent dopamine exocytosis from PC12 cells in a cell specific, temporally precise and dose-dependent manner. This proposed dopamine recording system can be developed to be a good cell model for dopamine regulation and drug screening in vitro, or dopaminergic cell implantation therapy in vivo using optogenetic stimulation in a precise and convenient way." @default.
- W2088571409 created "2016-06-24" @default.
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- W2088571409 date "2014-02-20" @default.
- W2088571409 modified "2023-10-02" @default.
- W2088571409 title "Real-Time Electrochemical Recording of Dopamine Release under Optogenetic Stimulation" @default.
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- W2088571409 doi "https://doi.org/10.1371/journal.pone.0089293" @default.
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