PMID- 32077869 OWN - NLM STAT- MEDLINE DCOM- 20201223 LR - 20210604 IS - 1364-5528 (Electronic) IS - 0003-2654 (Linking) VI - 145 IP - 7 DP - 2020 Apr 7 TI - An electronic enzyme-linked immunosorbent assay platform for protein analysis based on magnetic beads and AlGaN/GaN high electron mobility transistors. PG - 2725-2730 LID - 10.1039/c9an01809c [doi] AB - AlGaN/GaN high electron mobility transistor (HEMT) biosensors have attracted attention due to their high sensitivity, stability, and fast response characteristics. Some related studies have been explored but a Debye screening problem exists in physiological solutions hindering the detection of bio-macromolecules. Herein, a novel fast analytical platform for electronic enzyme-linked immunosorbent assay (e-ELISA) is proposed based on AlGaN/GaN HEMT with magnetic beads (MBs); MB-based e-ELISA decouples the modified area from the sensing surface to simplify the assay. Combining the advantages of e-ELISA and MBs, the resulting analytical platform presents a sensing capability beyond the Debye-screening limit and a novel ability to be reused. This platform offers a fast response toward prostate specific antigen (PSA) and the lowest concentration of detection is 1 fg mL(-1). Compared with conventional AlGaN/GaN HEMT biosensors, it shows higher sensitivity (3.73 muA dec(-1)) in a linear range (1 fg mL(-1) to 1 pg mL(-1)), which is within the constraints of emergency care applications. The platform's high sensitivity and fast repeatability endow it with great potential for early and rapid diagnosis. FAU - Wang, Jin AU - Wang J AD - Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, People's Republic of China. jdli2009@sinano.ac.cn. FAU - Gu, Zhiqi AU - Gu Z FAU - Liu, Xinsheng AU - Liu X FAU - Zhao, Lei AU - Zhao L FAU - Peng, Huoxiang AU - Peng H FAU - Li, Jiadong AU - Li J LA - eng PT - Journal Article DEP - 20200220 PL - England TA - Analyst JT - The Analyst JID - 0372652 RN - 0 (Aluminum Compounds) RN - 0 (aluminum gallium nitride) RN - 1R9CC3P9VL (gallium nitride) RN - CH46OC8YV4 (Gallium) RN - EC 3.4.21.77 (Prostate-Specific Antigen) SB - IM EIN - Analyst. 2021 Jun 28;146(13):4400. PMID: 34085671 MH - Aluminum Compounds/*chemistry MH - Biosensing Techniques/*methods MH - Electrons MH - *Enzyme-Linked Immunosorbent Assay MH - Gallium/*chemistry MH - Humans MH - Immunomagnetic Separation MH - Limit of Detection MH - Male MH - Prostate-Specific Antigen/*analysis/isolation & purification MH - Reproducibility of Results MH - *Transistors, Electronic EDAT- 2020/02/23 06:00 MHDA- 2020/12/29 06:00 CRDT- 2020/02/21 06:00 PHST- 2020/02/23 06:00 [pubmed] PHST- 2020/12/29 06:00 [medline] PHST- 2020/02/21 06:00 [entrez] AID - 10.1039/c9an01809c [doi] PST - ppublish SO - Analyst. 2020 Apr 7;145(7):2725-2730. doi: 10.1039/c9an01809c. Epub 2020 Feb 20.