(Nano)tag-antibody conjugates in rapid tests

Area of Science:

• Bioconjugation Chemistry
• Nanomaterial Science
• Biosensor Development

Background:

• Antibodies (Abs) are highly specific biological recognition elements crucial for biosensor development.
• Rapid tests offer low-cost, on-site detection for medical, environmental, and industrial applications.
• Conjugating Abs with nanomaterials (NMs) enhances biosensor performance, enabling sensitive and rapid analyte detection.

Purpose of the Study:

• To review state-of-the-art bio-conjugation techniques for creating antibody-nanomaterial (Ab-NM) conjugates.
• To focus on the efficiency of Ab-NM probes for in vitro rapid diagnostic tests.
• To highlight challenges and future perspectives in Ab-NM conjugate development for diagnostics.

Main Methods:

• Review of existing literature on antibody-nanomaterial conjugation strategies.
• Analysis of various conjugation chemistries: passive adsorption, covalent coupling, and affinity interactions.
• Evaluation of nanomaterial properties (magnetic, plasmonic, photoluminescent) influencing probe performance.

Main Results:

• Various Ab-NM conjugation techniques are available, each with specific advantages for rapid test development.
• Efficient bio-conjugation is critical for preserving antibody affinity, ensuring rapid response, and enabling long-term storage.
• Ab-NM conjugates are vital for improving the sensitivity and usability of in vitro rapid diagnostic devices.

Conclusions:

• Antibody-nanomaterial conjugates are essential for advancing rapid diagnostic tests.
• Continued research into efficient bio-conjugation techniques will drive the development of next-generation diagnostic tools.
• The review provides insights into commercially available Ab-NM conjugates and future research directions.