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Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems
Published on: July 4, 2011
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Metal Ion-Regulated Fluorescent Sensor Array Based on Gold Nanoclusters for Physiological Phosphate Sensing.
Xiaomeng Zhou1, Saijin Huang1, Wenfeng Liu1
1State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
Analytical Chemistry
|February 29, 2024
Summary
This study introduces a novel fluorescence sensor array using gold nanoclusters for detecting multiple physiological phosphates (PPs). The array effectively distinguishes and quantifies various phosphates in complex biological samples.
Area of Science:
- Biomolecular sensing
- Nanotechnology
- Analytical chemistry
Background:
- Physiological phosphates (PPs) are crucial in biological processes.
- Simultaneous detection of diverse PPs is a significant analytical challenge.
Purpose of the Study:
- To develop a fluorescence sensor array for simultaneous and differential detection of physiological phosphates.
- To utilize metal-ion-regulated gold nanoclusters (AuNCs) for enhanced sensing capabilities.
Main Methods:
- Fabrication of a four-channel sensor array using two types of AuNCs regulated by Zn²⁺ and Eu³⁺.
- Employing an indicator-displacement assay based on competitive metal ion binding.
- Utilizing linear discriminant analysis for data processing and discrimination.
Main Results:
- The sensor array successfully discriminated eight types of PPs (ATP, ADP, AMP, GTP, CTP, UTP, PPi, Pi).
- Quantitative detection of single phosphates within mixtures was achieved.
- Effective application in real biological samples like cell lysates and serum was demonstrated.
Conclusions:
- Metal ion-regulated AuNCs offer a promising platform for differential phosphate sensing.
- The developed sensor array provides an efficient method for analyzing complex biological samples.
- This approach has potential for detecting other disease-related biomolecules.
