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Determination of lysophosphatidylcholine using peroxidase-mimic PVP/PtRu nanozyme. | LitMetric

Determination of lysophosphatidylcholine using peroxidase-mimic PVP/PtRu nanozyme.

Anal Bioanal Chem

Department of Bionano Engineering, Center for Bionano Intelligence Education and Research, Hanyang University, Ansan, 426-791, South Korea.

Published: April 2023

AI Article Synopsis

  • Lysophosphatidylcholine (LPC) is a potential biomarker for diseases like cancer and diabetes, and this study explores using nanozymes for its measurement.
  • The researchers synthesized platinum-ruthenium nanozymes (PVP/PtRu NZs) that demonstrated impressive peroxidase-mimicking activities, enabling effective LPC detection over various pH and temperature conditions.
  • Results showed high accuracy in measuring LPC concentrations in assays, with the nanozymes performing comparably to the natural enzyme horseradish peroxidase (HRP) in human serum samples.

Article Abstract

Lysophosphatidylcholine (LPC) can be used as a biomarker for diseases such as cancer, diabetes, atherosclerosis, and sepsis. In this study, we demonstrated the ability of nanozymes to displace the natural derived enzyme in enzyme-based assays for the measurement of LPC. Synthesized polyvinylpyrrolidone-stabilized platinum-ruthenium nanozymes (PVP/PtRu NZs) had a uniform size of 2.48 ± 0.24 nm and superb peroxidase-mimicking activity. We demonstrated that the nanozymes had high activity over a wide pH and temperature range and high stability after long-term storage. The LPC concentration could be accurately analyzed through the absorbance and fluorescence signals generated by the peroxidation reaction using the synthesized nanozyme with substrates such as 3,3',5,5'-tetramethylbenzidine (TMB) and 10-acetyl-3,7-dihydroxyphenoxazine (Ampliflu™ Red). LPC at a concentration of 0-400 µM was used for the analysis, and the coefficient of determination (R) was 0.977, and the limit of detection (LOD) was 23.1 µM by colorimetric assay. In the fluorometric assay, the R was 0.999, and the LOD was 8.97 µM. The spiked recovery values for the determination of LPC concentration in human serum samples were 102-115%. Based on these results, we declared that PVP/PtRu NZs had an ability comparable to that of the native enzyme horseradish peroxidase (HRP) in the enzyme-based LPC detection method.

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Source
http://dx.doi.org/10.1007/s00216-023-04590-1DOI Listing

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