Recent Trends in Lateral Flow Immunoassays with Optical Nanoparticles

Area of Science:

• Biomedical Diagnostics
• Nanotechnology
• Analytical Chemistry

Background:

• Effective disease management relies on rapid, accurate, and convenient diagnostic methods.
• Enzyme-linked immunosorbent assay (ELISA) is a widely used detection technique.
• Lateral flow immunoassay (LFIA) is an emerging diagnostic tool offering convenience.

Purpose of the Study:

• To review the literature on lateral flow immunoassay (LFIA) utilizing optical nanoparticles (NPs).
• To discuss the application of optical NPs as probes in LFIA for diagnostic target detection.
• To summarize advancements in modifying optical properties of NPs for enhanced LFIA performance.

Main Methods:

• Literature review of scientific publications on optical nanoparticles and LFIA.
• Analysis of studies reporting the use of various optical NPs (e.g., gold, quantum dots) as probes.
• Examination of methods for modifying NP optical properties for improved sensitivity and specificity.

Main Results:

• Optical nanoparticles offer unique optical properties making them suitable as probes in LFIA.
• Modified optical NPs enhance the sensitivity and visual detection capabilities of LFIA tests.
• Diverse types of optical NPs have been developed and applied for detecting various diagnostic targets.

Conclusions:

• Optical nanoparticles are crucial components in advancing LFIA technology for diagnostics.
• The integration of optical NPs in LFIA facilitates rapid, sensitive, and specific disease detection.
• Future research directions include developing novel optical NPs with tailored properties for broader diagnostic applications.