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Related Experiment Video

Updated: Apr 19, 2026

Presynaptic Dopamine Dynamics in Striatal Brain Slices with Fast-scan Cyclic Voltammetry
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Visualization of cyclic nucleotide dynamics in neurons.

Kirill Gorshkov1, Jin Zhang1

  • 1Laboratory of Dr. Jin Zhang, Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine Baltimore, Maryland, USA.

Frontiers in Cellular Neuroscience
|December 25, 2014
PubMed
Summary

Fluorescent biosensors enable real-time monitoring of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) signaling. These tools are crucial for understanding neuronal function and cyclic nucleotide dynamics in complex cell types.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Biochemistry

Background:

  • Cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) are key second messengers in signal transduction.
  • Precise spatiotemporal regulation of cAMP and cGMP is vital for specific functional outputs in response to neuromodulatory signals.
  • Understanding these mechanisms is critical for deciphering complex cellular functions, particularly in neurons.

Purpose of the Study:

  • To review the design and application of genetically encodable fluorescent biosensors for cyclic nucleotides.
  • To highlight the utility of these biosensors in studying the regulation of neuronal function.
  • To discuss advancements and future directions in cyclic nucleotide signaling research.

Main Methods:

  • Introduction to the general design principles of fluorescent protein-based biosensors.
Keywords:
FRETbiosensorcAMPcGMPcyclic nucleotidefluorescenceneuronsignaling

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  • Detailed description of specific cyclic nucleotide fluorescent biosensors.
  • Examples of applying these biosensors to investigate neuronal signaling pathways.

    • Main Results:

    • Fluorescent biosensors offer high spatial and temporal resolution for monitoring cAMP and cGMP dynamics.
    • These tools have been successfully employed to study the regulation of neuronal function.
    • Significant progress has been made, but detailed mechanistic insights in neurons are still emerging.

    Conclusions:

    • Genetically encodable fluorescent biosensors are indispensable tools for studying second messenger signaling.
    • Further development of these reporters will be essential for elucidating the role of cyclic nucleotide signaling dynamics in neuronal networks.
    • Mechanistic details of cyclic nucleotide signaling in complex cells like neurons are beginning to be uncovered.