A Copper-Based Biosensor for Dual-Mode Glucose Detection

Abstract

Glucose is a source of energy for daily activities of the human body and is regarded as a clinical biomarker, due to the abnormal glucose level in the blood leading to many endocrine metabolic diseases. Thus, it is indispensable to develop simple, accurate, and sensitive methods for glucose detection. However, the current methods mainly depend on natural enzymes, which are unstable, hard to prepare, and expensive, limiting the extensive applications in clinics. Herein, we propose a dual-mode Cu2O nanoparticles (NPs) based biosensor for glucose analysis based on colorimetric assay and laser desorption/ionization mass spectrometry (LDI MS). Cu2O NPs exhibited excellent peroxidase-like activity and served as a matrix for LDI MS analysis, achieving visual and accurate quantitative analysis of glucose in serum. Our proposed method possesses promising application values in clinical disease diagnostics and monitoring.

Detection of abemaciclib, an anti-breast cancer agent, using a new electrochemical DNA biosensor

“…However, electrochemical sensors have drawbacks in quantifying drug compounds such as low reduction/oxidation current and high overpotential, which must be circumvented. The sensor functionalization can be prospective method to monitor the conventional drug dosage (Bayraktepe, 2020;Fathi et al, 2020;Foroughi et al, 2021a;Foroughi et al, 2015;Li et al, 2022;Maaref et al, 2018;Moarefdoust et al, 2021). Nanomaterials have shown specific physical and chemical characteristics in a variety of fields (Akca et al, 2021;Farvardin et al, 2020;Foroughi and Jahani, 2022;Foroughi and Ranjbar, 2017;Mei et al, 2022;Salajegheh et al, 2019;Zhou et al, 2022).…”