PMID- 36903516 OWN - NLM STAT- MEDLINE DCOM- 20230316 LR - 20230316 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 28 IP - 5 DP - 2023 Feb 28 TI - H-rGO-Pd NPs Nanozyme Enhanced Silver Deposition Strategy for Electrochemical Detection of Glypican-3. LID - 10.3390/molecules28052271 [doi] LID - 2271 AB - Glypican-3 (GPC3), as an emerging biomarker, has been shown to be beneficial for the early diagnosis and treatment of hepatocellular carcinoma (HCC). In this study, an ultrasensitive electrochemical biosensor for GPC3 detection has been constructed based on the hemin-reduced graphene oxide-palladium nanoparticles (H-rGO-Pd NPs) nanozyme-enhanced silver deposition signal amplification strategy. When GPC3 specifically interacted with GPC3 antibody (GPC3(Ab)) and GPC3 aptamer (GPC3(Apt)), an "H-rGO-Pd NPs-GPC3(Apt)/GPC3/GPC3(Ab)" sandwich complex was formed with peroxidase-like properties which enhanced H(2)O(2) to reduce the silver (Ag) ions in solution to metallic Ag, resulting in the deposition of silver nanoparticles (Ag NPs) on the surface of the biosensor. The amount of deposited Ag, which was derived from the amount of GPC3, was quantified by the differential pulse voltammetry (DPV) method. Under ideal circumstances, the response value was linearly correlated with GPC3 concentration at 10.0-100.0 mug/mL with R(2) of 0.9715. When the GPC3 concentration was in the range from 0.01 to 10.0 mug/mL, the response value was logarithmically linear with the GPC3 concentration with R(2) of 0.9941. The limit of detection was 3.30 ng/mL at a signal-to-noise ratio of three and the sensitivity was 1.535 muAmuM(-1)cm(-2). Furthermore, the electrochemical biosensor detected the GPC3 level in actual serum samples with good recoveries (103.78-106.52%) and satisfactory relative standard deviations (RSDs) (1.89-8.81%), which confirmed the applicability of the sensor in practical applications. This study provides a new analytical method for measuring the level of GPC3 in the early diagnosis of HCC. FAU - Li, Guiyin AU - Li G AUID- ORCID: 0000-0001-8356-4618 AD - Guangxi Key Laboratory of Information Materials, School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China. AD - College of Chemistry, Guangdong University of Petrochemical Technology, Guandu Road, Maoming 525000, China. FAU - Wang, Bo AU - Wang B AD - Guangxi Key Laboratory of Information Materials, School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China. FAU - Li, Ling AU - Li L AD - Guangxi Key Laboratory of Information Materials, School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China. FAU - Li, Xinhao AU - Li X AD - Guangxi Key Laboratory of Information Materials, School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China. FAU - Yan, Ruijie AU - Yan R AD - Guangxi Key Laboratory of Information Materials, School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China. FAU - Liang, Jintao AU - Liang J AD - Guangxi Key Laboratory of Information Materials, School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China. FAU - Zhou, Xinchun AU - Zhou X AD - Guangdi Maoming Chemical Co., Ltd., Maoming High-Tech Industrial Development Zone, Maoming 525000, China. FAU - Li, Liuxun AU - Li L AUID- ORCID: 0000-0001-9762-4183 AD - Solid Tumour Target Discovery Laboratory, Translational and Clinical Research Institute, Newcastle University Centre for Cancer, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK. FAU - Zhou, Zhide AU - Zhou Z AD - Guangxi Key Laboratory of Information Materials, School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China. LA - eng GR - Nos. 62161009 and 62261010/the National Nature Science Foundation of China/ GR - RC-XJ2022000401/Projects of Talents Recruitment of GDUPT/ GR - No. 211022-K/the Open Fund of Guangxi Key Laboratory of Information Materials/ GR - No. 20-065-76/the Fund of Guangxi Key laboratory of Metabolic Diseases Research/ PT - Journal Article DEP - 20230228 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Glypicans) RN - 0 (GPC3 protein, human) RN - 0 (graphene oxide) RN - 7782-42-5 (Graphite) RN - 743LRP9S7N (Hemin) RN - BBX060AN9V (Hydrogen Peroxide) RN - 5TWQ1V240M (Palladium) RN - 3M4G523W1G (Silver) SB - IM MH - Humans MH - *Biosensing Techniques/methods MH - Carcinoma, Hepatocellular MH - Electrochemical Techniques/methods MH - *Glypicans MH - *Graphite/chemistry MH - Hemin/chemistry MH - Hydrogen Peroxide MH - Liver Neoplasms MH - *Metal Nanoparticles/chemistry MH - Palladium MH - Silver/chemistry PMC - PMC10004744 OTO - NOTNLM OT - Glypican-3 OT - H-rGO-Pd NPs nanozyme OT - electrochemical nanobiosensor OT - hepatocellular carcinoma OT - peroxidase-like catalytic silver deposition COIS- The authors declare no conflict of interest. EDAT- 2023/03/12 06:00 MHDA- 2023/03/15 06:00 PMCR- 2023/02/28 CRDT- 2023/03/11 01:26 PHST- 2023/01/05 00:00 [received] PHST- 2023/02/11 00:00 [revised] PHST- 2023/02/15 00:00 [accepted] PHST- 2023/03/11 01:26 [entrez] PHST- 2023/03/12 06:00 [pubmed] PHST- 2023/03/15 06:00 [medline] PHST- 2023/02/28 00:00 [pmc-release] AID - molecules28052271 [pii] AID - molecules-28-02271 [pii] AID - 10.3390/molecules28052271 [doi] PST - epublish SO - Molecules. 2023 Feb 28;28(5):2271. doi: 10.3390/molecules28052271.