cAMP Biosensors Based on Genetically Encoded Fluorescent/Luminescent Proteins

Area of Science:

• Biochemistry
• Molecular Biology
• Cellular Signaling

Background:

• Cyclic adenosine monophosphate (cAMP) is a vital second messenger in cellular signal transduction.
• Dysregulation of cAMP signaling is implicated in diseases like cancer and prefrontal cortex disorders.
• Traditional cAMP measurement methods often require cell lysis, hindering live-cell and in vivo studies.

Purpose of the Study:

• To review recent advancements in genetically-encoded sensors for real-time, non-invasive cAMP monitoring.
• To highlight the utility of these sensors in drug development and disease research.
• To discuss sensor technologies based on fluorescent proteins and luciferases.

Main Methods:

• Review of genetically-encoded cAMP sensors.
• Focus on single fluorescent protein (FP) based sensors.
• Discussion of Förster Resonance Energy Transfer (FRET) and Bioluminescence Resonance Energy Transfer (BRET) based sensors.
• Inclusion of single luciferase-based sensors.

Main Results:

• Genetically-encoded sensors offer non-invasive, real-time monitoring of cAMP dynamics.
• Fluorescent protein and luciferase-based sensors provide versatile tools for imaging.
• FRET and BRET technologies enhance sensitivity and spatial resolution.
• These sensors facilitate studies in live cells and whole organisms.

Conclusions:

• Genetically-encoded cAMP sensors represent a significant advancement for biological research.
• These tools are essential for understanding cAMP-related pathologies and guiding therapeutic interventions.
• Future development promises even more sophisticated non-invasive cAMP imaging capabilities.