分子印迹聚合物
胶质纤维酸性蛋白
生物标志物
注意事项
检出限
材料科学
纳米技术
石墨烯
化学
色谱法
医学
选择性
病理
生物化学
催化作用
免疫组织化学
作者
Yixuan Li,Liuxiong Luo,Lenart Senicar,Rica Asrosa,Burcu Kizilates,Kaizhong Xing,Elias Torres,Lizhou Xu,Danyang Li,Neil Graham,Amanda Heslegrave,Henrik Zetterberg,David Sharp,Bing Li
标识
DOI:10.1002/adhm.202401966
摘要
Abstract Accurate assessment of neurological disease through monitoring of biomarkers has been made possible using the antibody‐based assays. But these assays suffer from expensive development of antibody probes, reliance on complicated equipments, and high maintenance costs. Here, using the novel reduced graphene oxide/polydopamine‐molecularly imprinted polymer (rGO/PDA‐MIP) as the probe layer, a robust electrochemical sensing platform is demonstrated for the ultrasensitive detection of glial fibrillary acidic protein (GFAP), a biomarker for a range of neurological diseases. A miniaturized integrated circuit readout system is developed to interface with the electrochemical sensor, which empowers it with the potential to be used as a point‐of‐care (POC) diagnostic tool in primary clinical settings. This innovative platform demonstrated good sensitivity, selectivity, and stability, with imprinting factor evaluated as 2.8. A record low limit‐of‐detection (LoD) is down to 754.5 ag mL −1 , with a wide dynamic range from 1 to 10 6 fg mL −1 . The sensing platform is validated through the analysis of GFAP in clinical plasma samples, yielding a recovery rate range of 81.6–108.8% compared to Single Molecule Array (Simoa). This cost‐effective and user‐friendly sensing platform holds the potential to be deployed in primary and resource‐limited clinical settings for the assessment of neurological diseases.
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