Detection of Acidic Pharmaceutical Compounds Using Virus-Based Molecularly Imprinted Polymers

Area of Science:

• Biomaterials Science
• Environmental Chemistry
• Analytical Chemistry

Background:

• Molecularly imprinted polymers (MIPs) are versatile tools for molecular recognition, applicable to biomolecules and small molecules.
• Detecting pharmaceutical pollutants like clofibric acid (CA) in the environment is crucial for public health and ecological safety.

Purpose of the Study:

• To synthesize a multi-functionalized MIP using a filamentous bacteriophage for enhanced detection of the acidic pharmaceutical clofibric acid (CA).
• To evaluate the binding affinity, specificity, and reusability of the phage-functionalized MIP for CA detection.

Main Methods:

• Synthesis of a phage-functionalized MIP using a filamentous bacteriophage as a template.
• Adsorption experiments to assess binding capacity.
• Quartz crystal microbalance with dissipation (QCM-D) monitoring to analyze binding kinetics and affinity.
• Reusability tests over multiple cycles.

Main Results:

• The phage-functionalized MIP exhibited significant binding affinity for clofibric acid (CA).
• Performance was superior compared to non-imprinted polymers and standard MIPs.
• The material demonstrated good reusability for at least five cycles without substantial loss of binding activity.

Conclusions:

• Phage-derived amino acids and the polymer matrix synergistically create effective binding cavities for acidic pharmaceutical compounds.
• Phage-functionalized MIPs represent a promising approach for sensitive and reusable detection of chemical pollutants.
• This method offers a novel strategy for environmental monitoring of pharmaceutical contaminants.