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Quantitation of Rabies Virus in Various Bovine Brain Structures
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Rabies virus-mediated connectivity tracing from single neurons.

Martin K Schwarz1, Stefan Remy2

  • 1Neuroconnectomics Group, Institute Experimental Epileptology and Cognition Research, University of Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany.

Journal of Neuroscience Methods
|July 23, 2019
PubMed
Summary

Understanding brain function requires mapping neural circuits. New viral tools like virus stamping enable precise single-cell tracing, advancing systems neuroscience and connectomics research.

Keywords:
ConnectomicsExpansion microscopyRabies virusSingle cell viral tracingaMAP

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Area of Science:

  • Neuroscience
  • Systems Neuroscience
  • Connectomics

Background:

  • Understanding brain information processing necessitates knowledge of neural wiring and circuit function.
  • Rabies virus-based genetic tools have significantly advanced systems neuroscience by linking neuronal physiology to genetics.
  • These methods enable the capture of synaptic and anatomical receptive fields for individual neurons.

Purpose of the Study:

  • To summarize recent advancements in single-cell techniques for neural circuit analysis.
  • To highlight novel methodologies like functionalized transsynaptic tracing and single-cell virus stamping.
  • To provide a perspective on automated, quantitative analysis of single-cell initiated connectomes.

Main Methods:

  • Rabies virus-based single-cell genetic manipulations.
  • Single-cell electroporation with genetically encoded Ca2+ sensors for transsynaptic tracing.
  • Single-cell targeted virus stamping for in vitro and in vivo applications.

Main Results:

  • Recent methodological upgrades enhance the ability to trace neural connections at the single-cell level.
  • Virus stamping offers a versatile solution for targeted, multi-virus single-cell infections.
  • These techniques facilitate the experimental link between neuronal physiology, genetics, and circuit architecture.

Conclusions:

  • Novel single-cell techniques are rapidly advancing the field of systems neuroscience.
  • Virus stamping represents a significant breakthrough for targeted neural circuit mapping.
  • Future directions include automated, quantitative analysis for comprehensive connectome reconstruction.