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Non-invasive Strategies for Chronic Manipulation of DREADD-controlled Neuronal Activity
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The Use of DREADDs to Deconstruct Behavior.

Paul D Whissell1, Sarasa Tohyama2, Loren J Martin2

  • 1Department of Psychology, University of Toronto Toronto, ON, Canada.

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Summary

Chemogenetics, particularly Designer Receptors Exclusively Activated by Designer Drugs (DREADDs), enables precise control of neural circuits. This technology links specific cell populations to behaviors, advancing neuroscience research and disease understanding.

Keywords:
DREADD receptorsanxietybehaviorchemogeneticsdepressionlearningoptogeneticspain

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Behavioral Science

Background:

  • Linking specific brain cell populations to behavior is a central goal in neuroscience.
  • Chemogenetics offers precise control over genetically defined neuronal subsets.
  • Designer Receptors Exclusively Activated by Designer Drugs (DREADDs) are a key chemogenetic tool.

Purpose of the Study:

  • To review the impact and utility of DREADD technology in neuroscience.
  • To highlight how DREADDs dissect neural circuitry underlying various behaviors.
  • To discuss the potential of DREADDs in disease research and therapeutics.

Main Methods:

  • Utilizing chemogenetics to target specific neuronal populations.
  • Employing engineered G protein-coupled receptors (GPCRs) for neuronal modulation.
  • Integrating DREADDs with imaging techniques to monitor neural activity in freely moving animals.

Main Results:

  • DREADDs enable the activation or silencing of neuronal firing in specific cell types.
  • The technology facilitates the deconstruction of whole-brain networks linked to behavioral states.
  • DREADDs have been applied to study memory, cognition, reward, feeding, anxiety, and pain.

Conclusions:

  • DREADDs are a powerful tool for understanding the link between brain activity and behavior.
  • Monitoring electrophysiological, biochemical, and behavioral outputs with DREADDs enhances research.
  • DREADD technology shows promise for studying disease pathogenesis and potential therapeutic applications.