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Cortical VIP+ /ChAT+ interneurons: From genetics to function.

Amir Dudai1, Nadav Yayon2, Hermona Soreq2

  • 1The Edmond and Lily Safra Center for Brain Sciences (ELSC), The Department of Neurobiology, The Life Sciences Institute, The Hebrew University of Jerusalem, Jerusalem, Israel.

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|December 10, 2020
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Summary
This summary is machine-generated.

This review details vasoactive intestinal polypeptide (VIP)+ /choline acetyltransferase (ChAT)+ interneurons, rare cortical neurons co-releasing GABA and ACh. We explore their properties and potential circuit amplification mechanisms.

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Area of Science:

  • Neuroscience
  • Cellular Neuroscience
  • Circuit Neuroscience

Background:

  • Understanding neuronal circuit function is crucial for neuroscience.
  • Identifying neuronal types and their interactions is key to circuit analysis.
  • Vasoactive intestinal polypeptide (VIP)+ /choline acetyltransferase (ChAT)+ interneurons are a rare class of cortical neurons.

Purpose of the Study:

  • To provide an updated review of VIP+/ChAT+ interneurons.
  • To discuss their genetic, physiological, and structural properties.
  • To examine their role in cortical microcircuits and potential amplification mechanisms.

Main Methods:

  • Review of existing literature on VIP+/ChAT+ interneurons.
  • Analysis of genetic profiles, including GABA and ACh release.
  • Examination of input-output mapping in sensory cortices and mPFC.

Main Results:

  • VIP+/ChAT+ interneurons co-express markers suggesting GABA and ACh release.
  • These neurons are sparse (0.5% of cortical neurons), raising questions about their functional impact.
  • Recent genetic techniques allow for direct manipulation and study of these interneurons.

Conclusions:

  • VIP+/ChAT+ interneurons possess unique properties due to co-release of GABA and ACh.
  • Further research is needed to understand their amplification mechanisms and function in behavior.
  • Comparing VIP+/ChAT+ and VIP+/ChAT- populations will clarify their distinct roles.