Electrochemical aptasensor for ultrasensitive detection of glycated hemoglobin (HbA1c) using gold-modified SPCE

IF 5.4 Q1 CHEMISTRY, ANALYTICAL

Sensing and Bio-Sensing Research Pub Date : 2025-02-01 DOI:10.1016/j.sbsr.2025.100765

Serly Zuliska , Irkham , Salma Nur Zakiyyah , Yeni Wahyuni Hartati , Yasuaki Einaga , Iman Permana Maksum

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Abstract

Accurate monitoring of diabetes mellitus (DM) biomarkers, particularly glycated hemoglobin (HbA1c), is essential for assessing long-term blood glucose control, optimizing therapeutic strategies, and preventing diabetes-related complications. To enhance the efficiency of this monitoring, electrochemical aptasensors based on screen-printed carbon electrodes (SPCE) modified with gold nanoparticles (AuNP) have been developed. The results demonstrate that the electrodeposition technique produces a uniform AuNP distribution and significantly increases the current responses of K₃[Fe(CN)₆] compared to bare SPCE. Aptamer immobilization using a streptavidin-biotin system via linker-mediated attachment exhibits high affinity for HbA1c, as evidenced by a significant decrease in current upon target binding.The analytical performance of the aptasensor shows a low detection limit of 8.34 pg/mL, with a linear detection range of 1 to 10⁴ pg/mL. Moreover, the aptasensor exhibits good selectivity for HbA1c over hemoglobin, glucose, and palmitic acid, with a selectivity value of 82.56 %. Stability tests indicate that the sensor retains 90.38 % of its activity after 70 days of storage, confirming its reliability for HbA1c detection. This study contributes to the advancement of effective electrochemical biosensors for diabetes monitoring, enabling early diagnosis and improved disease management.

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来源期刊

Sensing and Bio-Sensing Research Engineering-Electrical and Electronic Engineering

CiteScore

10.70

自引率

3.80%

发文量

审稿时长

87 days

期刊介绍： Sensing and Bio-Sensing Research is an open access journal dedicated to the research, design, development, and application of bio-sensing and sensing technologies. The editors will accept research papers, reviews, field trials, and validation studies that are of significant relevance. These submissions should describe new concepts, enhance understanding of the field, or offer insights into the practical application, manufacturing, and commercialization of bio-sensing and sensing technologies. The journal covers a wide range of topics, including sensing principles and mechanisms, new materials development for transducers and recognition components, fabrication technology, and various types of sensors such as optical, electrochemical, mass-sensitive, gas, biosensors, and more. It also includes environmental, process control, and biomedical applications, signal processing, chemometrics, optoelectronic, mechanical, thermal, and magnetic sensors, as well as interface electronics. Additionally, it covers sensor systems and applications, µTAS (Micro Total Analysis Systems), development of solid-state devices for transducing physical signals, and analytical devices incorporating biological materials.