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Updated: Jun 23, 2026
10:10
Development of a Lateral Flow Immunochromatographic Strip for Rapid and Quantitative Detection of Small Molecule Compounds
Published on: November 13, 2021
[An experimental luminescent immunochromatographic system].
Vestnik Rossiiskoi Akademii Meditsinskikh Nauk
|April 24, 2009
Summary
A novel luminescent latex assay offers a sensitive method for detecting microbial antigens and toxins. This immunochromatographic assay demonstrates superior performance compared to existing nanoparticle-based detection methods.
Area of Science:
- Biotechnology
- Analytical Chemistry
- Immunology
Background:
- Immunochromatographic assays are widely used for detecting various analytes.
- Current methods often rely on colloidal gold or quantum dots, which have limitations in sensitivity and signal stability.
- There is a need for more sensitive and efficient detection systems for microbial antigens and toxins.
Purpose of the Study:
- To develop a highly sensitive luminescent immunochromatographic assay for the detection of microbial antigens, cells, and toxins.
- To evaluate the performance of luminescent submicrone latex particles as a detection label in immunochromatographic procedures.
- To compare the efficacy of luminescent latexes with other labels like quantum dots, liposomes, and colloidal gold.
Main Methods:
- Development of a luminescent immunochromatographic assay utilizing luminescent submicrone latex particles conjugated with antibodies.
- Preparation of luminescent mobile phases including quantum labels, ganglioside-containing liposomes with sulforhodamine-101, and luminescent latex particles.
- Design and fabrication of devices for registering luminescent immunochromatograms.
- Comparative analysis of detection sensitivity using different luminescent labels and colloidal gold conjugates.
Main Results:
- Luminescent submicrone latex particles demonstrated significant advantages over quantum labels, ganglioside-containing liposomes, and colloidal gold in immunochromatographic assays.
- The developed luminescent latex-based immunochromatographic indicator element achieved a sensitivity of 3-30, outperforming elements based on colloidal gold conjugates for identical microorganisms.
- The assay effectively detected antigens and cells of microorganisms, as well as toxins.
Conclusions:
- Luminescent submicrone latex particles represent a superior labeling agent for immunochromatographic assays compared to conventional labels.
- The developed luminescent latex-based assay offers enhanced sensitivity and efficiency for detecting microbial agents and toxins.
- This technology holds promise for improved diagnostic tools in microbiology and toxicology.
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