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Yu X, Zhang X, Wang Z, Jiang H, Lv Z, Shen J, Xia G, Wen K. Universal simultaneous multiplex ELISA of small molecules in milk based on dual luciferases. Anal Chim Acta 2017; 1001:125-133. [PMID: 29291795 DOI: 10.1016/j.aca.2017.11.038] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 10/31/2017] [Accepted: 11/17/2017] [Indexed: 11/29/2022]
Abstract
The enzyme-linked immunosorbent assay (ELISA) has become the most important and widely used rapid detection technology for food safety because of its simple operation, fast speed and high sensitivity. Multiplex synchronous detection is the goal of ELISA that is always pursuing for. However, the reported multiplex ELISAs have not truly realized synchronous detection because of the complex signal generation and collection procedures. Here, we developed a dual-luciferases competitive direct bioluminescent immunoassay (DBL-cdELISA) with only one substrate addition step followed immediately by simultaneous signal acquisition. It is the first report of simultaneous multiplex analysis of small molecules based on microtiter plates and enzymes without any additional steps. The IC50 values for norfloxacin (NOR) and sulfamethazine (SMZ) were 0.051 ng mL-1 and 0.211 ng mL-1, respectively. The results demonstrated that the application of different luciferases and substrates simplified the signal generation and collection procedures and enabled simultaneous detection of small molecules with a simple procedure, high throughput and fast speed, that will be of great significance for the development of multiple assays.
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Affiliation(s)
- Xuezhi Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, No.2 Yuanmingyuan West Road, Haidian District, Beijing 100193, People's Republic of China
| | - Xiya Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, No.2 Yuanmingyuan West Road, Haidian District, Beijing 100193, People's Republic of China
| | - Zhanhui Wang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, No.2 Yuanmingyuan West Road, Haidian District, Beijing 100193, People's Republic of China
| | - Haiyang Jiang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, No.2 Yuanmingyuan West Road, Haidian District, Beijing 100193, People's Republic of China
| | - Ziquan Lv
- Department of Genetic Toxicology, Shenzhen Center for Disease Control and Prevention, No.8, Longyuan Road, Longzhu Road, Nanshan District, Shenzhen 518020, People's Republic of China
| | - Jianzhong Shen
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, No.2 Yuanmingyuan West Road, Haidian District, Beijing 100193, People's Republic of China
| | - Guoliang Xia
- State Key Laboratory for Agro-Biotechnology, College of Biological Science, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian District, Beijing 100193, People's Republic of China
| | - Kai Wen
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, No.2 Yuanmingyuan West Road, Haidian District, Beijing 100193, People's Republic of China.
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