Combined optogenetic and chemogenetic control of neurons

Ken Berglund, Jack K. Tung, Bryan Higashikubo, Robert E. Gross, Christopher I. Moore, Ute Hochgeschwender

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

20 Scopus citations

Abstract

Optogenetics provides an array of elements for specific biophysical control, while designer chemogenetic receptors provide a minimally invasive method to control circuits in vivo by peripheral injection. We developed a strategy for selective regulation of activity in specific cells that integrates opto- and chemogenetic approaches, and thus allows manipulation of neuronal activity over a range of spatial and temporal scales in the same experimental animal. Light-sensing molecules (opsins) are activated by biologically produced light through luciferases upon peripheral injection of a small molecule substrate. Such luminescent opsins, luminopsins, allow conventional fiber optic use of optogenetic sensors, while at the same time providing chemogenetic access to the same sensors. We describe applications of this approach in cultured neurons in vitro, in brain slices ex vivo, and in awake and anesthetized animals in vivo.

Original languageEnglish
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages207-225
Number of pages19
DOIs
StatePublished - Mar 1 2016

Publication series

NameMethods in Molecular Biology
Volume1408
ISSN (Print)1064-3745

Keywords

  • Behavior
  • Bioluminescence
  • Chemogenetics
  • Coelenterazine
  • Electrophysiology
  • Luciferase
  • Luminopsin
  • Multielectrode array
  • Neuron
  • Optogenetics

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