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Published on: October 10, 2013
Multiplex immunodetection of tumor markers with a suspension array built upon core-shell structured functional
Yao Long1, Zhiling Zhang, Xiaomei Yan
1Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, Key Laboratory of Analytical Science, Xiamen University, Xiamen 361005, China.
Researchers developed functional fluorescence-encoded polystyrene beads (FFPBs) for multiplex tumor marker detection. This novel suspension array offers precise control and reliable detection of key cancer biomarkers in clinical samples.
Area of Science:
- Biomedical Engineering
- Materials Science
- Analytical Chemistry
Background:
- Multiplex immunoassay development is crucial for efficient disease diagnosis.
- Existing methods often face challenges in sensitivity, specificity, and cost-effectiveness.
- Novel microcarriers are needed for advanced diagnostic platforms.
Purpose of the Study:
- To develop a novel suspension array for multiplex immunodetection of tumor markers.
- To synthesize and characterize functional fluorescence-encoded polystyrene beads (FFPBs) as microcarriers.
- To evaluate the performance of the FFPB-based suspension array for clinical applications.
Main Methods:
- Synthesis of FFPBs via copolymerization of rhodamine 6G and carboxyl groups.
- Controlled adjustment of R6G quantity for precise fluorescence encoding.
- Coupling of capture probes and antibody labeling for immunocomplex formation.
- Simultaneous detection of alpha-fetoprotein, carcinoembryonic antigen, and prostate specific antigen.
Main Results:
- FFPBs exhibited facile fabrication with controllable fluorescence intensity.
- High biomolecule coupling efficiency and stable monodispersity were observed.
- The suspension array achieved sensitive detection of three tumor markers with low limits.
- Clinical serum sample testing showed good agreement with electrochemiluminescence immunoassay.
Conclusions:
- Laboratory-made FFPBs are suitable microcarriers for constructing robust suspension arrays.
- The developed suspension array demonstrates potential for accurate and efficient clinical diagnosis.
- This technology offers a promising platform for multiplexed biomarker detection.
