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Retrograde Fluorescent Labeling Allows for Targeted Extracellular Single-unit Recording from Identified Neurons In vivo
Published on: June 26, 2013
A fluorescence-based double retrograde tracer strategy for charting central neuronal connections
Richard Apps1, Tom J H Ruigrok
1Department of Physiology, School of Medical Sciences, University of Bristol, Bristol, UK. r.apps@bristol.ac.uk
Nature Protocols
|August 19, 2007
Summary
Fluorescent microspheres offer an efficient method for double retrograde axonal tracing in the central nervous system (CNS). This technique provides clear cell labeling and well-defined injection sites for studying neural connections.
Area of Science:
- Neuroscience
- Cell Biology
- Histology
Background:
- Studying central nervous system (CNS) connections requires effective methods for tracing neural pathways.
- Traditional double tracer techniques can be complex and less efficient.
- Microspheres offer a promising alternative for retrograde axonal tracing.
Purpose of the Study:
- To describe a protocol for using fluorescent microspheres for double retrograde axonal tracing.
- To highlight the advantages of microspheres over other tracing methods.
- To address common challenges and provide solutions for microsphere tracing.
Main Methods:
- Utilizing microspheres tagged with distinct fluorescent markers for retrograde axonal tracing.
- Performing animal surgery for tracer preparation and delivery.
- Employing histological processing for visualization of labeled neurons.
Main Results:
- Microspheres demonstrate high transport efficiency and distinctive cell labeling.
- The technique allows for the production of well-defined injection sites.
- The protocol is user-friendly and efficient, with a short completion time.
Conclusions:
- Fluorescent microspheres are a valuable tool for double retrograde axonal tracing of CNS connections.
- This method offers significant advantages in terms of ease-of-use, efficiency, and clarity of results.
- The described protocol provides a reliable approach for researchers studying neural circuitry.
