Optical recording of action potentials in mammalian neurons using a microbial rhodopsin.
Optical recording of action potentials in mammalian neurons using a microbial rhodopsin.
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DOI:
10.1038/nmeth.1782
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发表时间:
2011-11-27
期刊:
影响因子:
48
通讯作者:
Cohen, Adam E.
中科院分区:
文献类型:
--
作者:
Kralj, Joel M.;Douglass, Adam D.;Hochbaum, Daniel R.;Maclaurin, Dougal;Cohen, Adam E.
Reliable optical detection of single action potentials in mammalian neurons has been one of the longest-standing challenges in neuroscience. Here we achieve this goal by using the endogenous fluorescence of a microbial rhodopsin protein, Archaerhodopsin 3 (Arch) from Halorubrum sodomense, expressed in cultured rat hippocampal neurons. This genetically encoded voltage indicator exhibited an approximately 10-fold improvement in sensitivity and speed over existing protein-based voltage indicators, with a roughly linear two-fold increase in brightness between −150 mV and +150 mV and a sub-millisecond response time. Arch detected single electrically triggered action potentials with an optical signal-to-noise ratio > 10. The mutant Arch(D95N) lacked endogenous proton pumping and showed 50% greater sensitivity than wild-type, but had a slower response (41 ms). Nonetheless, Arch(D95N) also resolved individual action potentials. Microbial rhodopsin-based voltage indicators promise to enable optical interrogation of complex neural circuits, and electrophysiology in systems for which electrode-based techniques are challenging.
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DOI:
10.1523/jneurosci.1240-09.2009
发表时间:
2009-07-22
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Bradley J;Luo R;Otis TS;DiGregorio DA
通讯作者:
DiGregorio DA
影响因子:
13.9
作者:
Fenno L;Yizhar O;Deisseroth K
通讯作者:
Deisseroth K
DOI:
10.1098/rstb.2009.0084
发表时间:
2009-09-12
影响因子:
6.3
作者:
Homma, Ryota;Baker, Bradley J.;Zecevic, Dejan
通讯作者:
Zecevic, Dejan
影响因子:
5.3
作者:
Sjulson, Lucas;Miesenbock, Gero
通讯作者:
Miesenbock, Gero
影响因子:
25
作者:
Boyden, ES;Zhang, F;Deisseroth, K
通讯作者:
Deisseroth, K