PMID- 36255496 OWN - NLM STAT- MEDLINE DCOM- 20221020 LR - 20221108 IS - 1436-5073 (Electronic) IS - 0026-3672 (Linking) VI - 189 IP - 11 DP - 2022 Oct 18 TI - A "signal-on" photoelectrochemical sensor for human epidermal growth factor receptor 2 detection based on Y6/CdS organic-inorganic heterojunction. PG - 425 LID - 10.1007/s00604-022-05489-x [doi] AB - A "signal-on" photoelectrochemical (PEC) immunosensor was successfully constructed for determination of human epidermal growth factor receptor 2 (HER2) based on organic-inorganic heterojunction Y6/CdS as photoactive material. Compared with single organic semiconductor, Y6, Y6/CdS exhibited higher photoelectric conversion efficiency due to the formation of heterojunction. In the presence of HER2, sandwich immune structure was formed between HER2 aptamer and anti-HER2 antibody (Ab) by specific recognition. The polydopamine (PDA) nanoparticles were used for signal amplification to enhance photocurrent intensity as PDA can act as electron donor to eliminate holes and promote electron-hole pairs separation. The developed PEC sensor displayed a wide detection range of 5-1000 pg mL(-1) and a low detection limit of 2.2 pg mL(-1) for HER2 (S/N = 3). The sensor was successfully used for the detection of HER2 in serum with recoveries between 94.8 and 104% and relative standard deviations (RSDs) in the range of 1.2-4.3%. Furthermore, the designed immunosensor possessed good stability, selectivity, and reproducibility, which can find potential clinical applications for disease diagnosis. A "signal-on" photoelectrochemical sensor was reported for human epidermal growth factor receptor 2 detection based on Y6/CdS organic-inorganic heterojunction. CI - (c) 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature. FAU - Luo, Jiarong AU - Luo J AD - Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China. FAU - Luo, Junjun AU - Luo J AD - School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, 563000, China. FAU - Deng, Lei AU - Deng L AD - Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China. FAU - Yang, Minghui AU - Yang M AUID- ORCID: 0000-0002-7612-8137 AD - Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China. yangminghui@csu.edu.cn. AD - Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410000, Hunan, China. yangminghui@csu.edu.cn. AD - National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410083, China. yangminghui@csu.edu.cn. FAU - Chen, Xiang AU - Chen X AD - School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, 563000, China. chenxiangck@126.com. AD - Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410000, Hunan, China. chenxiangck@126.com. AD - National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410083, China. chenxiangck@126.com. LA - eng GR - 22174163/National Natural Science Foundation of China/ GR - 2019TP1001/Hunan Provincial Science and Technology Department/ GR - TC210804V/Ministry of Industry and Information Technology of the People's Republic of China/ PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221018 PL - Austria TA - Mikrochim Acta JT - Mikrochimica acta JID - 7808782 RN - 0 (Cadmium Compounds) RN - EC 2.7.10.1 (ERBB2 protein, human) SB - IM MH - Humans MH - Electrochemical Techniques MH - *Cadmium Compounds/chemistry MH - *Biosensing Techniques MH - Limit of Detection MH - Immunoassay MH - Reproducibility of Results OTO - NOTNLM OT - Human epidermal growth factor receptor 2 OT - Immunosensor OT - Organic-inorganic heterojunction OT - Photoelectrochemical OT - Polydopamine EDAT- 2022/10/19 06:00 MHDA- 2022/10/21 06:00 CRDT- 2022/10/18 11:14 PHST- 2022/07/14 00:00 [received] PHST- 2022/09/10 00:00 [accepted] PHST- 2022/10/18 11:14 [entrez] PHST- 2022/10/19 06:00 [pubmed] PHST- 2022/10/21 06:00 [medline] AID - 10.1007/s00604-022-05489-x [pii] AID - 10.1007/s00604-022-05489-x [doi] PST - epublish SO - Mikrochim Acta. 2022 Oct 18;189(11):425. doi: 10.1007/s00604-022-05489-x.