Temporally precise single-cell-resolution optogenetics.

Temporally precise single-cell-resolution optogenetics.
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DOI:
10.1038/s41593-017-0018-8
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发表时间:
2017-12
影响因子:
25
通讯作者:
Emiliani V
Emiliani V
中科院分区:
医学1区
文献类型:
--
作者:
Shemesh OA;Tanese D;Zampini V;Linghu C;Piatkevich K;Ronzitti E;Papagiakoumou E;Boyden ES;Emiliani V

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Optogenetic control of individual neurons with high temporal precision, within intact mammalian brain circuitry, would enable powerful explorations of how neural circuits operate. Two-photon computer generated holography enables precise sculpting of light, and could in principle enable simultaneous illumination of many neurons in a network, with the requisite temporal precision to simulate accurate neural codes. We designed a high efficacy soma-targeted opsin, finding that fusing the N-terminal 150 residues of kainate receptor subunit 2 (KA2) to the recently discovered high-photocurrent channelrhodopsin CoChR restricted expression of this opsin primarily to the cell body of mammalian cortical neurons. In combination with two-photon holographic stimulation, we found that this somatic CoChR (soCoChR) enabled photostimulation of individual cells in intact cortical circuits with single cell resolution and <1 millisecond temporal precision, and use soCoChR to perform connectivity mapping on intact cortical circuits.
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