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Jiang YQ, Wei YP, Liu XP, Chen JS, Mao CJ, Jin BK. Strong cathode electroluminescence biosensor based on CeO 2 functionalized PCN-222@Ag NPs for sensitive detection of p-Tau-181 protein. J Colloid Interface Sci 2024; 665:144-151. [PMID: 38520931 DOI: 10.1016/j.jcis.2024.03.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/03/2024] [Accepted: 03/19/2024] [Indexed: 03/25/2024]
Abstract
Electrochemiluminescence (ECL) biosensors provide a convenient and high sensitivity method for early disease diagnosis. However, creating luminophore arrays relying on powerful ECL signals remains a daunting task. Porphyrin-centered metal organic frameworks (MOFs) exhibit remarkable potential in ECL sensing applications. In this paper, based on a simple one-pot synthesis method, PCN-222@Ag NPs doped with CeO2 was synthesized to enhance the ECL performance. Due to the strong catalytic ability of CeO2, the ECL signal strength of the new material PCN-222@CeO2@Ag NPs is much higher than that of the PCN-222@Ag NPs and PCN-222. The luminous properties of PCN-222@CeO2@Ag NPs become more intense and stable due to the excellent electronic conductivity of Ag NPs. Based on the fact that CuS@PDA composite can quench the ECL signal of PCN-222@CeO2@Ag NPs, we constructed a novel sandwich ECL immune sensor for the detection of phosphorylated Tau 181 (p-Tau-181) protein. The ECL sensor has a great linear relationship with p-Tau-181 protein concentration, ranging from 1 pg/mL to 100 ng/mL. The detection limit is as low as 0.147 pg/mL. This work provides new ideas for developing sensitive ECL sensors for the p-Tau-181 protein, the marker of Alzheimer's disease.
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Affiliation(s)
- Yun-Qi Jiang
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Ministry of Education), School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Functional Inorganic Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China
| | - Yu-Ping Wei
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Ministry of Education), School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Functional Inorganic Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China
| | - Xing-Pei Liu
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Ministry of Education), School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Functional Inorganic Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China
| | - Jing-Shuai Chen
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Ministry of Education), School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Functional Inorganic Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China
| | - Chang-Jie Mao
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Ministry of Education), School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Functional Inorganic Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China.
| | - Bao-Kang Jin
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Ministry of Education), School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China; Key Laboratory of Functional Inorganic Materials of Anhui Province, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, PR China
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