Synthesis and Initial Evaluation of a Novel Fluorophore for Selective FMDV 3C Protease Detection

Area of Science:

• Biochemistry
• Virology
• Molecular Diagnostics

Background:

• Foot and Mouth Disease Virus (FMDV) poses a significant threat to livestock globally.
• Accurate and rapid detection of FMDV is crucial for disease control and prevention.
• Existing diagnostic methods may have limitations in speed or accessibility.

Purpose of the Study:

• To develop and evaluate a novel fluorophore probe for detecting FMDV 3C Protease.
• To assess the probe's sensitivity, specificity, stability, and rapidity for potential use in livestock screening.
• To establish a basis for a rapid diagnostic tool for FMDV infection.

Main Methods:

• Synthesis and characterization of the peptide-linked conjugate fluorophore Boc-AL(Boc)Q(Trt)-AMC.
• In vitro evaluation of the fluorophore's performance in the presence of FMDV 3C Protease.
• Comparative analysis of the fluorophore's selectivity against other common proteases.
• Assessment of probe stability under relevant conditions.

Main Results:

• The Boc-AL(Boc)Q(Trt)-AMC fluorophore demonstrated statistically significant increases in fluorescence upon exposure to FMDV 3C Protease.
• The probe exhibited selectivity when compared to other common proteases.
• Physiologically relevant concentrations of the target protease elicited a measurable response.
• The stability of the deprotected fluorophore was identified as a limitation.

Conclusions:

• The developed Boc-AL(Boc)Q(Trt)-AMC fluorophore shows promise as a sensitive and selective tool for detecting FMDV 3C Protease.
• This probe has potential for application in rapid screening assays for FMDV-infected livestock.
• Further optimization is needed to address the probe's stability limitations for widespread diagnostic use.