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Sadat Mostafavi E, Asoodeh A, Chamani J. Evaluation of interaction between Ponceau 4R (P4R) and trypsin using kinetic, spectroscopic, and molecular dynamics simulation methods. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Papagiannopoulos A, Selianitis D, Chroni A, Allwang J, Li Y, Papadakis CM. Preparation of trypsin-based nanoparticles, colloidal properties and ability to bind bioactive compounds. Int J Biol Macromol 2022; 208:678-687. [PMID: 35341884 DOI: 10.1016/j.ijbiomac.2022.03.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/02/2022] [Accepted: 03/13/2022] [Indexed: 11/30/2022]
Abstract
Nanoparticles (NPs) based on the proteolytic enzyme trypsin (TRY) were prepared by a biocompatible methodology. TRY co-assembled with the anionic polysaccharide chondroitin sulfate (CS) in complexes with well-defined distributions of radii in the range of 100-200 nm by electrostatic complexation at acidic conditions. At pH 7 the complexes were unstable and lost their monomodal size distribution which is potentially related to TRY's weak positive net surface charge and a large negative charge patch that forms at neutral pH. Thermal treatment at conditions which were not expected to interfere with TRY's proteolytic activity was used to stabilize the complexes into NPs that resisted disintegration at pH 7 taking advantage of the ability of the TRY globules to thermally aggregate. The secondary conformation of TRY within the NPs was found fairly unperturbed even after thermal treatment which is crucial for its physiological function. The CS-TRY NPs could bind and encapsulate the bioactive substances curcumin (CUR) and β-carotene (β-C) owing to TRY's hydrophobic domains. The CS-TRY NPs may be considered as a platform for the immobilized active enzyme and multifunctional NPs for hydrophobic bioactive compounds.
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Affiliation(s)
- Aristeidis Papagiannopoulos
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.
| | - Dimitrios Selianitis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Angeliki Chroni
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Johannes Allwang
- Soft Matter Physics Group, Physics Department, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Yanan Li
- Soft Matter Physics Group, Physics Department, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Christine M Papadakis
- Soft Matter Physics Group, Physics Department, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
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Tao X, Huang Y, Wang C, Chen F, Yang L, Ling L, Che Z, Chen X. Recent developments in molecular docking technology applied in food science: a review. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14325] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xuan Tao
- School of Food and Bioengineering Xihua University Chengdu Sichuan 610039 China
| | - Yukun Huang
- School of Food and Bioengineering Xihua University Chengdu Sichuan 610039 China
- Key Laboratory of Food Non Thermal Processing Engineering Technology Research Center of Food Non Thermal Processing Yibin Xihua University Research Institute Yibin Sichuan 644404 China
| | - Chong Wang
- School of Food and Bioengineering Xihua University Chengdu Sichuan 610039 China
| | - Fang Chen
- School of Food and Bioengineering Xihua University Chengdu Sichuan 610039 China
| | - Lingling Yang
- School of Food and Bioengineering Xihua University Chengdu Sichuan 610039 China
| | - Li Ling
- School of Food and Bioengineering Xihua University Chengdu Sichuan 610039 China
- College of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu Sichuan 611137 China
| | - Zhenming Che
- School of Food and Bioengineering Xihua University Chengdu Sichuan 610039 China
| | - Xianggui Chen
- School of Food and Bioengineering Xihua University Chengdu Sichuan 610039 China
- Key Laboratory of Food Non Thermal Processing Engineering Technology Research Center of Food Non Thermal Processing Yibin Xihua University Research Institute Yibin Sichuan 644404 China
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Gu Y, Wang Y, Zhang H. Study on the interactions between toxic nitroanilines and lysozyme by spectroscopic approaches and molecular modeling. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 202:260-268. [PMID: 29793147 DOI: 10.1016/j.saa.2018.05.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 04/06/2018] [Accepted: 05/02/2018] [Indexed: 06/08/2023]
Abstract
Being exogenous environmental pollutants, nitroanilines (NAs) are highly toxic and have mutagenic and carcinogenic activity. Being lack of studies on interactions between NAs and lysozyme at molecular level, the binding interactions of lysozyme with o-nitroaniline (oNA), m-nitroaniline (mNA) and p-nitroaniline (pNA) were investigated by means of steady-state fluorescence, synchronous fluorescence, UV-vis absorption spectroscopy, as well as molecular modeling. The experimental results revealed that the fluorescence of lysozyme is quenched by oNA and mNA through a static quenching, while the fluorescence quenching triggered by pNA is a combined dynamic and static quenching. The number of binding sites (n) and the binding constant (Kb) corresponding thermodynamic parameters ΔH⊖, ΔS⊖, ΔG⊖ at different temperatures were calculated. The reactions between NAs and lysozyme were spontaneous and entropy driven and the binding of NAs to lysozyme induced conformation changes of lysozyme. The difference of the position of -NO2 group affected the binding and the binding constants Kb decreased in the following pattern: Kb (pNA) >Kb (mNA) >Kb (oNA). Molecular docking studies were performed to reveal the most favorable binding sites of NAs on lysozyme. Our recently results could offer mechanistic insights into the nature of the binding interactions between NAs and lysozyme and provide information about the toxicity risk of NAs to human health.
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Affiliation(s)
- Yunlan Gu
- College of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China.
| | - Yanqing Wang
- College of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China
| | - Hongmei Zhang
- College of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China
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Zhang M, Wang Y, Zhang H, Cao J, Fei Z, Wang Y. Impact of the alkyl chain length on binding of imidazolium-based ionic liquids to bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 196:323-333. [PMID: 29475181 DOI: 10.1016/j.saa.2018.02.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 02/08/2018] [Accepted: 02/12/2018] [Indexed: 06/08/2023]
Abstract
The effects of six imidazolium-based ionic liquids (ILs) with different alkyl chain length ([CnMim]Cl, n=2, 4, 6, 8, 10, 12) on the structure and functions of bovine serum albumin (BSA) were studied by multi-spectral methods and molecular docking. ILs with the longer alkyl chain length have the stronger binding interaction with BSA and the greater conformational damage to protein. The effects of ILs on the functional properties of BSA were further studied by the determination of non-enzyme esterase activity, β-fibrosis and other properties of BSA. The thermal stability of BSA was reduced, the rate of the formation of beta sheet structures of BSA was lowered, and the esterase-like activity of BSA were decreased with the increase of ILs concentration. Simultaneous molecular modeling technique revealed the favorable binding sites of ILs on protein. The hydrophobic force and polar interactions were the mainly binding forces of them. The calculated results are in a good agreement with the spectroscopic experiments. These studies on the impact of the alkyl chain length on binding of imidazolium-based ionic liquids to BSA are of great significance for understanding and developing the application of ionic liquid in life and physiological system.
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Affiliation(s)
- Mengyue Zhang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China
| | - Ying Wang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China
| | - Hongmei Zhang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China
| | - Jian Cao
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China
| | - Zhenghao Fei
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China
| | - Yanqing Wang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China.
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Zhang H, Wang Y, Zhu H, Fei Z, Cao J. Binding mechanism of triclocarban with human serum albumin: Effect on the conformation and activity of the model transport protein. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.10.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Azmi SNH, Al-Hadhrami SSK, Al-Marhoubi BMR, Al-Sulaimi SSS, Al-Shamoosi ZDS. Development and validation of fluorescence spectrophotometric method: Quantitation of chlorpheniramine maleate in pharmaceutical formulations. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Fang Q, Xing M, Guo C, Liu Y. Probing the interaction of doxycycline to trypsin and bovine hemoglobin by using multi-spectral techniques and molecular docking. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.07.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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