Electrochemical Monitoring of Sphingosine-1-phosphate-Induced ATP Release Using a Microsensor Based on an...

Area of Science:

• Biomedical Engineering
• Neuroscience
• Analytical Chemistry

Background:

• Neuropathic pain is a debilitating condition with limited treatment options.
• Sphingosine-1-phosphate (S1P) induces adenosine triphosphate (ATP) release from microglia, contributing to neuropathic pain.
• Accurate detection of ATP in the nervous system is essential for understanding pain mechanisms.

Purpose of the Study:

• To develop a highly sensitive and selective electrochemical microsensor for quantifying ATP.
• To investigate the role of S1P-induced ATP release in neuropathic pain.
• To explore potential therapeutic interventions for neuropathic pain.

Main Methods:

• Development of an electrochemical microsensor utilizing an entropy-driven bipedal DNA walker.
• Specific recognition of ATP by ATP aptamers to initiate the DNA walker.
• Cascade signal amplification using methylene blue for enhanced detection.
• Monitoring S1P-induced ATP release from BV2 cells.

Main Results:

• The microsensor demonstrated high selectivity, stability, and a low limit of detection (1.13 nM).
• Successfully monitored S1P-induced ATP release from BV2 cells.
• Dicumarol was observed to inhibit ATP release, indicating its potential therapeutic value.

Conclusions:

• The developed microsensor offers a novel strategy for in situ, quantitative monitoring of ATP in neurological diseases.
• The findings suggest dicumarol as a potential therapeutic agent for neuropathic pain.
• The microsensor's design holds promise for in vivo monitoring of ATP in neuropathic pain.