Fluorescence Polarization-Based Bioassays: New Horizons.

Area of Science:

• Analytical Chemistry
• Biochemistry
• Biophysics

Background:

• Fluorescence polarization (FP) has been a valuable tool in bioanalytical systems for decades, particularly in immunoassays.
• Its ability to detect selective interactions in real-time and its insensitivity to sample matrix effects simplify sample preparation.

Purpose of the Study:

• To review and comparatively characterize recent developments in fluorescence polarization-based bioanalytical methods.
• To explore the integration of FP with novel receptor molecules, fluorophores, and signal amplification strategies.

Main Methods:

• The review synthesizes findings from recent studies utilizing fluorescence polarization as a detection signal.
• It examines various schemes for detectable complex formation and signal amplification.
• Consideration is given to FP applications with alternative receptor molecules and diverse fluorophores.

Main Results:

• Recent studies demonstrate the broad efficacy of FP beyond traditional immunoassays.
• New techniques leverage FP for detecting metal ions, nucleic acids, and enzymatic reactions.
• Integration with advanced fluorophores and receptor molecules enhances FP sensitivity and versatility.

Conclusions:

• Fluorescence polarization is a versatile and powerful detection technique for a wide range of bioanalytical applications.
• Its adaptability allows for the development of novel assays for various analytes, including small molecules and biomolecules.
• FP continues to evolve, offering simplified and accelerated sample preparation and real-time analysis capabilities.