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Independent optical excitation of distinct neural populations

Research output: Contribution to journalArticle

Author(s)

Nathan C Klapoetke, Yasunobu Murata, Sung Soo Kim, Stefan R Pulver, Amanda Birdsey-Benson, Yong Ku Cho, Tania K Morimoto, Amy S Chuong, Eric J Carpenter, Zhijian Tian, Jun Wang, Yinlong Xie, Zhixiang Yan, Yong Zhang, Brian Y Chow, Barbara Surek, Michael Melkonian, Vivek Jayaraman, Martha Constantine-Paton, Gane Ka-Shu Wong & 1 more Edward S Boyden

School/Research organisations

Abstract

Optogenetic tools enable examination of how specific cell types contribute to brain circuit functions. A long-standing question is whether it is possible to independently activate two distinct neural populations in mammalian brain tissue. Such a capability would enable the study of how different synapses or pathways interact to encode information in the brain. Here we describe two channelrhodopsins, Chronos and Chrimson, discovered through sequencing and physiological characterization of opsins from over 100 species of alga. Chrimson's excitation spectrum is red shifted by 45 nm relative to previous channelrhodopsins and can enable experiments in which red light is preferred. We show minimal visual system–mediated behavioral interference when using Chrimson in neurobehavioral studies in Drosophila melanogaster. Chronos has faster kinetics than previous channelrhodopsins yet is effectively more light sensitive. Together these two reagents enable two-color activation of neural spiking and downstream synaptic transmission in independent neural populations without detectable cross-talk in mouse brain slice.
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Details

Original languageEnglish
Pages (from-to)338-346
Number of pages9
JournalNature Methods
Volume11
Issue number3
Early online date9 Feb 2014
DOIs
Publication statusPublished - Mar 2014

    Research areas

  • Animals, Drosophila Proteins, Drosophila melanogaster, Light, Molecular Sequence Data, Neurons, Optogenetics, Rhodopsin

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  1. Addendum: independent optical excitation of distinct neural populations

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