1
|
Mu H, Xu Z, Liu Y, Sun Y, Wang B, Sun X, Wang Z, Eremin S, Zherdev AV, Dzantiev BB, Lei H. Probing the stereoselective interaction of ofloxacin enantiomers with corresponding monoclonal antibodies by multiple spectrometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 194:83-91. [PMID: 29328954 DOI: 10.1016/j.saa.2018.01.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 12/19/2017] [Accepted: 01/03/2018] [Indexed: 06/07/2023]
Abstract
Although stereoselective antibody has immense potential in chiral compounds detection and separation, the interaction traits between stereoselective antibody and the corresponding antigenic enantiomers are not yet fully exploited. In this study, the stereospecific interactions between ofloxacin isomers and corresponding monoclonal antibodies (McAb-WR1 and McAb-MS1) were investigated using time-resolved fluorescence, steady-state fluorescence, and circular dichroism (CD) spectroscopic methods. The chiral recognition discrepancies of antibodies with ofloxacin isomers were reflected through binding constant, number of binding sites, driving forces and conformational changes. The major interacting forces of McAb-WR1 and McAb-MS1 chiral interaction systems were hydrophobic force and van der Waals forces joined up with hydrogen bonds, respectively. Synchronous fluorescence spectra and CD spectra results showed that the disturbing of tyrosine and tryptophan micro-environments were so slightly that no obvious secondary structure changes were found during the chiral hapten binding. Clarification of stereospecific interaction of antibody will facilitate the application of immunoassay to analyze chiral contaminants in food and other areas.
Collapse
Affiliation(s)
- Hongtao Mu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University / Guangdong Provincial Engineering & Technique Research Centre of Food Safety Detection and Risk Assessment, Guangzhou 510642, China; College of Biology and Food Engineering, Guangdong University of Education, Guangzhou 510303, China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University / Guangdong Provincial Engineering & Technique Research Centre of Food Safety Detection and Risk Assessment, Guangzhou 510642, China
| | - Yingju Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University / Guangdong Provincial Engineering & Technique Research Centre of Food Safety Detection and Risk Assessment, Guangzhou 510642, China
| | - Yuanming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University / Guangdong Provincial Engineering & Technique Research Centre of Food Safety Detection and Risk Assessment, Guangzhou 510642, China
| | - Baoling Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University / Guangdong Provincial Engineering & Technique Research Centre of Food Safety Detection and Risk Assessment, Guangzhou 510642, China
| | - Xiulan Sun
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhanhui Wang
- College of Veterinary, China Agricultural University, Beijing 100083, China
| | - Sergei Eremin
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia
| | - Anatoly V Zherdev
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia
| | - Boris B Dzantiev
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University / Guangdong Provincial Engineering & Technique Research Centre of Food Safety Detection and Risk Assessment, Guangzhou 510642, China.
| |
Collapse
|
2
|
Krawczyk P, Jędrzejewska B, Pietrzak M, Janek T. Synthesis, photophysical properties and systematic evaluations of new phenanthroimidazole fluorescent probe for bioimaging: Experimental and theoretical study. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 166:74-85. [DOI: 10.1016/j.jphotobiol.2016.11.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/22/2016] [Accepted: 11/05/2016] [Indexed: 12/11/2022]
|