1
|
Yan Z, Liu J, Ren J, Li C, Wang Z, Dai L, Cao S, Zhang R, Liu X. Magnesium ions regulated ovalbumin-lysozyme heteroprotein complex: Aggregation kinetics, thermodynamics and morphologic structure. Int J Biol Macromol 2023; 253:126487. [PMID: 37657312 DOI: 10.1016/j.ijbiomac.2023.126487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/10/2023] [Accepted: 08/22/2023] [Indexed: 09/03/2023]
Abstract
This study aims to investigate the mechanism of magnesium ions regulated ovalbumin-lysozyme (OVA-LYS) heteroprotein aggregation behavior via aggregation kinetics model, exploring the relationship between differential aggregation behavior and protein molecular structure, intermolecular interactions and thermal stability. Results showed that the aggregation rate (kapp) and maximum absorbance (Amax) of the OVA-LYS heteroprotein complex were located between OVA and LYS. Meanwhile, the thermal denaturation temperature (Td) and denaturation enthalpy (ΔH) were between the values of OVA and LYS as well. Compared with OVA, the thermal stability of the OVA-LYS heteroprotein complex increased owing to the electrostatic interactions between OVA and LYS, resulting in slower aggregation rate and lower aggregation degree. Molecular dynamics simulations revealed the molecular conformational changes during OVA-LYS binary protein binding and the stability of the complex conformation. Moreover, MgCl2 weakened the OVA-LYS interactions through Debye shielding while increasing thermal stability, allowing the two proteins to aggregate into amorphous precipitates rather than spherical coacervates. Overall, this study provides information to further understand the regulation mechanism of proteins differential aggregation behavior by ions.
Collapse
Affiliation(s)
- Zhaohui Yan
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Jingbo Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Jianqi Ren
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Chenman Li
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Zhi Wang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Luyao Dai
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Sijia Cao
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Renzhao Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Xuanting Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| |
Collapse
|
2
|
Garcia LV, Silva D, Costa MM, Armés H, Salema-Oom M, Saramago B, Serro AP. Antiseptic-Loaded Casein Hydrogels for Wound Dressings. Pharmaceutics 2023; 15:pharmaceutics15020334. [PMID: 36839656 PMCID: PMC9967843 DOI: 10.3390/pharmaceutics15020334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/20/2023] Open
Abstract
Chronic wound treatment accounts for a substantial percentage of the medical expenses worldwide. Improving and developing novel wound care systems can potentially help to handle this problem. Wound dressings loaded with antiseptics may be an important tool for wound care, as they inhibit bacterial growth at the wound site. The goal of the present work was to investigate the potential of using casein hydrogel dressings loaded with two antiseptic drugs, Octiset® or polyhexanide, to treat chronic wounds. Casein-based hydrogels are inexpensive and have several properties that make them suitable for biomedical applications. Two types of casein were used: casein sodium salt and acid casein, with the formulations being labelled CS and C, respectively. The hydrogels were characterised with respect to their physical properties (swelling capacity, water content, morphology, mechanical resistance, and stability), before and after sterilisation, and they showed adequate values for the intended application. The hydrogels of both formulations were able to sustain controlled drug-release for, at least, 48 h. They were demonstrated to be non-irritant, highly haemocompatible, and non-cytotoxic, and revealed good antimicrobial properties against Staphylococcus aureus and Pseudomonas aeruginosa. Steam-heat sterilisation did not compromise the material's properties. The in vivo performance of C hydrogel loaded with Octiset® was evaluated in a case study with a dog. The efficient recovery of the wounds confirms its potential as an alternative for wound treatment. To our knowledge, this is the first time that wound dressings loaded with Octiset®, one of the most efficient drugs for wound treatment, were prepared and tested.
Collapse
Affiliation(s)
- Leonor Vasconcelos Garcia
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Diana Silva
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Correspondence: (D.S.); (B.S.)
| | - Maria Madalena Costa
- Hospital Veterinário de S. Bento, Rua de S. Bento, 358-A, 1200-822 Lisboa, Portugal
- Faculdade de Medicina Veterinária, Universidade Lusófona, Campo Grande, 376, 1749-024 Lisboa, Portugal
| | - Henrique Armés
- Hospital Veterinário de S. Bento, Rua de S. Bento, 358-A, 1200-822 Lisboa, Portugal
- Faculdade de Medicina Veterinária, Universidade Lusófona, Campo Grande, 376, 1749-024 Lisboa, Portugal
| | - Madalena Salema-Oom
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, 2829-511 Caparica, Portugal
| | - Benilde Saramago
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Correspondence: (D.S.); (B.S.)
| | - Ana Paula Serro
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, 2829-511 Caparica, Portugal
| |
Collapse
|
3
|
Cui Z, He F, Li X, Li Y, Huo C, Wang H, Qi Y, Tian G, Zong W, Liu R. Response pathways of superoxide dismutase and catalase under the regulation of triclocarban-triggered oxidative stress in Eisenia foetida: Comprehensive mechanism analysis based on cytotoxicity and binding model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 854:158821. [PMID: 36116645 DOI: 10.1016/j.scitotenv.2022.158821] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 06/15/2023]
Abstract
Triclocarban (TCC) is an emerging environmental contaminant, posing potential ecological risks. Displaying a high accumulation effect and 120-day half-life in the soil environment, the toxic effects of TCC to soil organisms have been widely reported. Previous studies have confirmed that TCC can induce the oxidative stress and changes in superoxide dismutase (SOD) and catalase (CAT) activities in earthworms, but the underlying mechanisms of oxidative stress and disorder in antioxidant enzyme activities induced by TCC have not yet been elucidated. Here, we explored the multiple response mechanisms of SOD and CAT under the regulation of oxidative stress induced by TCC. Results indicated that higher-dose (0-2.0 mg/L) TCC exposure triggered the overproduction of ROS in Eisenia foetida coelomocytes, causing oxidative damage and a decrease in cell viability that was response to ROS accumulation. The TCC-induced inhibition of intracellular SOD/CAT activity was found under the regulation of oxidative stress (SOD: 29.2 %; CAT: 18.5 %), and this effect was blunted by antioxidant melatonin. At the same time, the interaction between antioxidative enzymes and TCC driven by various forces (SOD: electrostatic interactions; CAT: van der Waals forces and hydrogen bonding) led to inhibited SOD activity (9.84 %) and enhanced CAT activity (17.5 %). Then, to elucidate the binding mode of TCC, we explored the changes in SOD and CAT structure (protein backbone and secondary structure), the microenvironment of aromatic amino acids, and aggregation behavior through multispectral techniques. Molecular docking results showed that TCC inhibited SOD activity in a substrate competitive manner and enhanced CAT activity by the stabilizing effects of TCC on the heme groups. Collectively, this study reveals the response mechanisms of SOD/CAT under the regulation of TCC-triggered oxidative stress and shed a new light on revealing the toxic pathways of exogenous pollutants on antioxidant-related proteins function.
Collapse
Affiliation(s)
- Zhihan Cui
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Falin He
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Xiangxiang Li
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Yuze Li
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Chengqian Huo
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Hao Wang
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Yuntao Qi
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Guang Tian
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, Shandong 250014, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, PR China; America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China.
| |
Collapse
|
4
|
Wang J, Sun J, Sun P, Yang K, Dumas E, Gharsallaoui A. Formation of lysozyme-caseinate heteroprotein complexes for encapsulation of lysozyme by spray-drying: Effect of mass ratio and temperature. Int J Biol Macromol 2022; 215:312-320. [PMID: 35738341 DOI: 10.1016/j.ijbiomac.2022.06.123] [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: 03/01/2022] [Revised: 05/21/2022] [Accepted: 06/17/2022] [Indexed: 11/05/2022]
Abstract
The formation of heteroprotein complexes obtained by the interactions between sodium caseinate (CAS) and lysozyme (LYS) at pH 7 was investigated by using turbidimetric analysis, particle size distribution, and zeta potential at different CAS/LYS ratios. Moreover, isothermal titration calorimetry (ITC) was used to determine the type and magnitude of the energies involved in the CAS/LYS complexation process and evaluated the thermodynamic behavior of their complexation. Results revealed that the structure of CAS/LYS complexes drastically changed when CAS/LYS ratio increased to 1.0 and the structuring stages were characterized by exothermic signals and were controlled by favorable enthalpy changes due to electrostatic interactions between both proteins. In addition, the interaction between two proteins was temperature-dependent and mainly entropy-driven, which was verified by molecular dynamics (MD) simulations, and the hydrophobic interactions and hydrogen bonding were shown to play an important role in CAS/LYS interactions. Furthermore, CAS/LYS complexes showed minimum LYS enzymatic activity at CAS/LYS ratio 1.0. Though spray-drying of CAS/LYS complexes with ratio 1.0, the LYS activity in reconstituted solution was recovered >80 % of initial activity after calcium chloride addition. The present study provides useful information about CAS/LYS complexation and binding processes, which could facilitate their application in antimicrobial edible food packaging.
Collapse
Affiliation(s)
- Jian Wang
- Zhejiang University of Technology, Collage of Food Science and Technology, Zhejiang, Hangzhou 310014, China; Univ. Lyon, University Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 Bd 11 Novembre 1918, 69622 Villeurbanne, France
| | - Juan Sun
- Zhejiang University of Science & Technology, School of Biological & Chemical Engineering, Zhejiang, Hangzhou 310023, China
| | - Peilong Sun
- Zhejiang University of Technology, Collage of Food Science and Technology, Zhejiang, Hangzhou 310014, China
| | - Kai Yang
- Zhejiang University of Technology, Collage of Food Science and Technology, Zhejiang, Hangzhou 310014, China
| | - Emilie Dumas
- Univ. Lyon, University Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 Bd 11 Novembre 1918, 69622 Villeurbanne, France
| | - Adem Gharsallaoui
- Univ. Lyon, University Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 Bd 11 Novembre 1918, 69622 Villeurbanne, France.
| |
Collapse
|
5
|
Shirazi HA, Lee S. Complexation between porcine gastric mucin (PGM) and lysozyme: Influence of heat treatment of lysozyme on the tribological properties. Int J Biol Macromol 2022; 203:212-221. [PMID: 35093433 DOI: 10.1016/j.ijbiomac.2022.01.122] [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: 11/10/2021] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 11/05/2022]
Abstract
The influence of complexation between porcine gastric mucin (PGM) and lysozyme (LYZ) solutions (pH⁓7.0) on their lubricating properties was studied at a hydrophobic self-mated polydimethylsiloxane (PDMS) tribopair. To this end, LYZ solutions with varying heating time, namely 1hr, 3hr-, and 6hr at 90 °C, as well as unheated LYZ solution, were prepared. The lubricating capability of PGM and LYZ solutions and also their mixtures was characterized using pin-on-disk tribometry. In parallel, to precisely investigate the interaction between PGM and LYZ solutions, an array of the well-known experiments including electrophoretic-dynamic light scattering, circular dichroism spectroscopy and optical waveguide light-mode spectroscopy were employed. These experiments were utilized to elucidate the key features e.g. zeta potential, hydrodynamic diameter, conformational structure and mass adsorption. The tribometry results indicated that both PGM and unheated LYZ solutions had poor lubricating properties in the boundary lubrication regime (sliding speed lower than 10 mm/s). Mixing PGM with unheated LYZ led to a slight decrease in the friction coefficient, but no desirable lubricity was observed. An optimum slippery characteristic was achieved by incorporating 1hr heated LYZ solution into PGM one. Excellent lubricity of PGM/1hr heated LYZ may stem from surface charge compensation, tenaciously compact aggregation, unique conformational structure and considerable mass adsorption onto PDMS. This finding revealed that a strong interaction between PGM and LYZ molecules and as a result, the promising lubricating capability of PGM/LYZ mixtures, can be administered by varying heat-treatment duration of LYZ proteins.
Collapse
Affiliation(s)
- Hadi Asgharzadeh Shirazi
- Department of Mechanical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark.
| | - Seunghwan Lee
- Department of Mechanical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| |
Collapse
|
6
|
He F, Liu Q, Jing M, Wan J, Huo C, Zong W, Tang J, Liu R. Toxic mechanism on phenanthrene-induced cytotoxicity, oxidative stress and activity changes of superoxide dismutase and catalase in earthworm (Eisenia foetida): A combined molecular and cellular study. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126302. [PMID: 34118541 DOI: 10.1016/j.jhazmat.2021.126302] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/31/2021] [Accepted: 05/31/2021] [Indexed: 06/12/2023]
Abstract
Phenanthrene (PHE) is an important organic compound, which is widespread in the soil environment and exhibits potential threats to soil organisms. Toxic effects of PHE to earthworms have been extensively studied, but toxic mechanisms on PHE-induced cytotoxicity and oxidative stress at the molecular and cellular levels have not been reported yet. Therefore, we explored the cytotoxicity and oxidative stress caused by PHE in earthworm coelomocytes and the interaction mechanism between PHE and the major antioxidant enzymes SOD/CAT. It was shown that high-dose PHE exposure induced the intracellular reactive oxygen species (ROS) generation, mediated lipid peroxidation, reduced total antioxidant capacity (T-AOC) in coelomocytes, and triggered oxidative stress, thus resulted in a strong cytotoxicity at higher concentrations (0.6-1.0 mg/L). The intracellular SOD/CAT activity in cells after PHE exposure were congruent with that in molecular levels, which the activity of SOD enhanced and CAT inhibited. Spectroscopic studies showed the SOD/CAT protein skeleton and secondary structure, as well as the micro-environment of aromatic amino acids were changed after PHE binding. Molecular docking indicated PHE preferentially docked to the surface of SOD. However, the key residues Tyr 357, His 74, and Asn 147 for activity were in the binding pocket, indicating PHE more likely to dock to the active center of CAT. In addition, H-bonding and hydrophobic force were the primary driving force in the binding interaction between PHE and SOD/CAT. This study indicates that PHE can induce cytotoxicity and oxidative damage to coelomocytes and unearthes the potential effects of PHE on earthworms.
Collapse
Affiliation(s)
- Falin He
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Qiang Liu
- Solid Waste and Hazardous Chemicals Pollution Prevention and Control Center of Shandong Province, 145# Jingshi West Road, Jinan 250117, PR China
| | - Mingyang Jing
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Jingqiang Wan
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Chengqian Huo
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, Shandong 250014, PR China
| | - Jingchun Tang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Research Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
| |
Collapse
|
7
|
Zheng J, Gao Q, Ge G, Wu J, Tang CH, Zhao M, Sun W. Heteroprotein Complex Coacervate Based on β-Conglycinin and Lysozyme: Dynamic Protein Exchange, Thermodynamic Mechanism, and Lysozyme Activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7948-7959. [PMID: 34240870 DOI: 10.1021/acs.jafc.1c02204] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Heteroprotein complex coacervate (HPCC) is a liquid-like protein concentrate produced by liquid-liquid phase separation. We revealed the protein dynamic exchange and thermodynamic mechanism of β-conglycinin/lysozyme coacervate, and clarified the effect of HPCC on protein structure and activity. β-conglycinin and lysozyme assembled into coacervate at pH 5.75-6.5 and assembled into amorphous precipitates at higher pH. As the pH dropped from 8 to 6, the number of binding sites of the complex decreased in half, and the desolvation degree corresponding to the entropy gain was greatly reduced, conducing to the formation of coacervates rather than precipitates. The coacervates achieved the unique dynamic exchange by exchanging proteins with the diluted phase, making the uniform distribution of proteins in coacervates. The lysozyme activity was completely retained in β-conglycinin/lysozyme coacervates. These results proved that β-conglycinin-based heteroprotein complex coacervate is a feasible method to encapsulate and enrich active proteins in a purely aqueous environment.
Collapse
Affiliation(s)
- Jiabao Zheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Qing Gao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Ge Ge
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jihong Wu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Chuan-He Tang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China
| | - Mouming Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China
| | - Weizheng Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
| |
Collapse
|
8
|
Chernysheva MG, Kasperovich AV, Skrabkova HS, Snitko AV, Arutyunyan AM, Badun GA. Lysozyme-dalargin self-organization at the aqueous-air and liquid-liquid interfaces. Colloids Surf B Biointerfaces 2021; 202:111695. [PMID: 33740631 DOI: 10.1016/j.colsurfb.2021.111695] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/24/2020] [Accepted: 03/10/2021] [Indexed: 01/04/2023]
Abstract
An experimental study of protein-peptide binding was performed by means of radiochemical and spectroscopic methods. Lysozyme and dalargin were chosen due to their biological and physiological importance. By means of tensiometry and radiochemical assays, it was found that dalargin possesses rather high surface activity at the aqueous-air and aqueous-p-xylene interfaces to be substituted by protein. Dalargin forms a hydrophobic complex with lysozyme in which the secondary structure of lysozyme is preserved. When lysozyme forms a mixed adsorption layer with dalargin at the aqueous-air surface, the peptide prevents protein from concentrating in the subsurface monolayer. In the presence of p-xylene protein in the interface, reorganization occurs quickly, so there is no lag in the interfacial tension time dependence. The interfacial tension in this case is controlled by protein and/or protein-peptide complexes. An increase in the enzymatic activity of lysozyme in the presence of dalargin was confirmed by a docking model that suggests the formation of hydrogen bonds between dalargin and amino acid residues in the active site.
Collapse
Affiliation(s)
| | | | - Hanna S Skrabkova
- Dpt. Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Alexey V Snitko
- Dpt. Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Alexander M Arutyunyan
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992, Moscow, Russia
| | - Gennadii A Badun
- Dpt. Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
| |
Collapse
|
9
|
Kameta N, Ding W. Stacking of nanorings to generate nanotubes for acceleration of protein refolding. NANOSCALE 2021; 13:1629-1638. [PMID: 33331384 DOI: 10.1039/d0nr07660k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Self-assembly and photoisomerization of azobenzene-based amphiphilic molecules produced nanorings with an inner diameter of 25 nm and lengths of <40 nm. The nanorings, which consisted of a single bilayer membrane of the amphiphiles, retained their morphology in the presence of a stacking inhibitor; whereas in the absence of the inhibitor, the nanorings stacked into short nanotubes (<500 nm). When subjected to mild heat treatment, these nanotubes joined end-to-end to form nanotubes with lengths of several tens of micrometers. The nanorings and the short and long nanotubes were able to encapsulate proteins and thereby suppress aggregation induced by thermal denaturation. In addition, the nanotubes accelerated refolding of denatured proteins by encapsulating them and then releasing them into the bulk solution; refolding occurred simultaneously with release. In contrast, the nanorings did not accelerate protein refolding. Refolding efficiency increased with increasing nanotube length, indicating that the re-aggregation of the proteins was strictly inhibited by lowering the concentration of the proteins in the bulk solution as the result of the slow release from the longer nanotubes. The migration of the proteins through the long, narrow nanochannels during the release process will also contribute to refolding.
Collapse
Affiliation(s)
- N Kameta
- Nanomaterials Research Institute, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
| | | |
Collapse
|
10
|
Zheng J, Tang CH, Sun W. Heteroprotein complex coacervation: Focus on experimental strategies to investigate structure formation as a function of intrinsic and external physicochemical parameters for food applications. Adv Colloid Interface Sci 2020; 284:102268. [PMID: 32977143 DOI: 10.1016/j.cis.2020.102268] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 12/14/2022]
Abstract
Proteins are important components of foods, because they are one of the essential food groups, they have many functional properties that are very useful for modifying the physicochemical and textural properties of processed foods and possess many biological activities that are beneficial to human health. The process of heteroprotein complex coacervation (HPCC) combines two or more proteins through long-range coulombic interaction and specific short-range forces, creating a liquid-liquid colloid, with highly concentrated protein in the droplet phase and much more diluted-protein in the bulk phase. Coacervates possess novel, modifiable, physicochemical characteristics, and often exhibit the combined biological activities of the protein components, which makes them applicable to formulated foods and encapsulation carriers. This review discusses research progress in the field of HPCC in three parts: (1) the basic and innovative experimental methods and simulation tools for understanding the physicochemical behavior of these heteroprotein supramolecular architectures; (2) the influence of environmental factors (pH, mixing ratio, salts, temperature, and formation time) and intrinsic factors (protein modifications, metal-binding, charge anisotropy, and polypeptide designs) on HPCC; (3) the potential applications of HPCC materials, such as encapsulation of nutraceuticals, nanogels, emulsion stabilization, and protein separation. The wide diversity of possible combinations of proteins with different properties, endows HPCC materials with great potential for development into highly-innovation functional food ingredients.
Collapse
Affiliation(s)
- Jiabao Zheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Chuan-He Tang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China
| | - Weizheng Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China.
| |
Collapse
|
11
|
Quanten T, Savić ND, Parac-Vogt TN. Hydrolysis of Peptide Bonds in Protein Micelles Promoted by a Zirconium(IV)-Substituted Polyoxometalate as an Artificial Protease. Chemistry 2020; 26:11170-11179. [PMID: 32515831 DOI: 10.1002/chem.202001920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Indexed: 12/22/2022]
Abstract
The development of artificial proteases is challenging, but important for many applications in modern proteomics and biotechnology. The hydrolysis of hydrophobic or unstructured proteins is particularly difficult due to their poor solubility, which often requires the presence of surfactants. Herein, it is shown that a zirconium(IV)-substituted Keggin polyoxometalate (POM), (Et2 NH2 )10 [Zr(α-PW11 O39 )2 ] (1), is able to selectively hydrolyze β-casein, which is an intrinsically unstructured protein at pH 7.4 and 60 °C. Four surfactants (sodium dodecyl sulfate (SDS), N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (ZW3-12), 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate (CHAPS), and polyethylene glycol tert-octylphenyl ether (TX-100)), which differ in the nature of their polar groups, were investigated for their role in influencing the selectivity and efficiency of protein hydrolysis. Under experimental conditions, β-casein forms micellar structures in which the hydrophilic part of the protein is water accessible and able to interact with 1. Identical fragmentation patterns of β-casein in the presence of 1 were observed through SDS poly(acrylamide) gel electrophoresis both in the presence and absence of surfactants, but the rate of hydrolysis varied, depending on the nature of surfactant. Whereas TX-100 surfactant, which has a neutral polar head, caused only a slight decrease in the hydrolysis rate, stronger inhibition was observed in the presence surfactants with charges in their polar heads (CHAPS, ZW3-12, SDS). These results were consistent with those of tryptophan fluorescencequenching studies, which showed that the binding between β-casein and 1 decreased with increasing repulsion between the POM and the polar heads of the surfactants. In all cases, the micellar structure of β-casein was not significantly affected by the presence of POM or surfactants, as indicated by circular dichroism spectroscopy.
Collapse
Affiliation(s)
- Thomas Quanten
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
| | - Nada D Savić
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
| | - Tatjana N Parac-Vogt
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
| |
Collapse
|
12
|
Shimizu T, Ding W, Kameta N. Soft-Matter Nanotubes: A Platform for Diverse Functions and Applications. Chem Rev 2020; 120:2347-2407. [PMID: 32013405 DOI: 10.1021/acs.chemrev.9b00509] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Self-assembled organic nanotubes made of single or multiple molecular components can be classified into soft-matter nanotubes (SMNTs) by contrast with hard-matter nanotubes, such as carbon and other inorganic nanotubes. To date, diverse self-assembly processes and elaborate template procedures using rationally designed organic molecules have produced suitable tubular architectures with definite dimensions, structural complexity, and hierarchy for expected functions and applications. Herein, we comprehensively discuss every functions and possible applications of a wide range of SMNTs as bulk materials or single components. This Review highlights valuable contributions mainly in the past decade. Fifteen different families of SMNTs are discussed from the viewpoints of chemical, physical, biological, and medical applications, as well as action fields (e.g., interior, wall, exterior, whole structure, and ensemble of nanotubes). Chemical applications of the SMNTs are associated with encapsulating materials and sensors. SMNTs also behave, while sometimes undergoing morphological transformation, as a catalyst, template, liquid crystal, hydro-/organogel, superhydrophobic surface, and micron size engine. Physical functions pertain to ferro-/piezoelectricity and energy migration/storage, leading to the applications to electrodes or supercapacitors, and mechanical reinforcement. Biological functions involve artificial chaperone, transmembrane transport, nanochannels, and channel reactors. Finally, medical functions range over drug delivery, nonviral gene transfer vector, and virus trap.
Collapse
Affiliation(s)
- Toshimi Shimizu
- Nanomaterials Research Institute, Department of Materials and Chemistry , National Institute of Advanced Industrial Science and Technology , Tsukuba Central 5, 1-1-1 Higashi , Tsukuba , Ibaraki 305-8565 , Japan
| | - Wuxiao Ding
- Nanomaterials Research Institute, Department of Materials and Chemistry , National Institute of Advanced Industrial Science and Technology , Tsukuba Central 5, 1-1-1 Higashi , Tsukuba , Ibaraki 305-8565 , Japan
| | - Naohiro Kameta
- Nanomaterials Research Institute, Department of Materials and Chemistry , National Institute of Advanced Industrial Science and Technology , Tsukuba Central 5, 1-1-1 Higashi , Tsukuba , Ibaraki 305-8565 , Japan
| |
Collapse
|
13
|
Doekhie A, Slade MN, Cliff L, Weaver L, Castaing R, Paulin J, Chen YC, Edler KJ, Koumanov F, Marchbank KJ, van den Elsen JMH, Sartbaeva A. Thermal resilience of ensilicated lysozyme via calorimetric and in vivo analysis. RSC Adv 2020; 10:29789-29796. [PMID: 35518265 PMCID: PMC9056174 DOI: 10.1039/d0ra06412b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/04/2020] [Indexed: 12/02/2022] Open
Abstract
Ensilication is a novel method of protein thermal stabilisation using silica. It uses a modified sol–gel process which tailor fits a protective silica shell around the solvent accessible protein surface. This, electrostatically attached, shell has been found to protect the protein against thermal influences and retains its native structure and function after release. Here, we report the calorimetric analysis of an ensilicated model protein, hen egg-white lysozyme (HEWL) under several ensilication conditions. DSC, TGA-DTA-MS, CD, were used to determine unfolding temperatures of native, released and ensilicated lysozyme to verify the thermal resilience of the ensilicated material. Our findings indicate that ensilication protects against thermal fluctuations even at low concentrations of silica used for ensilication. Secondly, the thermal stabilisation is comparable to lyophilisation, and in some cases is even greater than lyophilisation. Additionally, we performed a mouse in vivo study using lysozyme to demonstrate the antigenic retention over long-term storage. The results suggest that protein is confined within the ensilicated material, and thus is unable to unfold and denature but is still functional after long-term storage. Ensilication is a novel method of protein thermal stabilisation using silica. It uses a modified sol–gel process which tailor fits a protective silica shell around the protein to enable room temperature storage of biopharmaceuticals.![]()
Collapse
Affiliation(s)
- A. Doekhie
- Department of Chemistry
- University of Bath
- Bath
- UK
| | - M. N. Slade
- Department of Chemistry
- University of Bath
- Bath
- UK
| | - L. Cliff
- Department of Chemistry
- University of Bath
- Bath
- UK
| | - L. Weaver
- Department of Chemistry
- University of Bath
- Bath
- UK
| | - R. Castaing
- Material and Chemical Characterisation Facility
- University of Bath
- Bath
- UK
| | - J. Paulin
- The Medical School
- Framlington Place
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Y.-C. Chen
- Department of Chemistry
- University of Bath
- Bath
- UK
| | - K. J. Edler
- Department of Chemistry
- University of Bath
- Bath
- UK
| | - F. Koumanov
- Department for Health
- University of Bath
- Bath
- UK
| | - K. J. Marchbank
- The Medical School
- Framlington Place
- Newcastle University
- Newcastle upon Tyne
- UK
| | | | | |
Collapse
|
14
|
Wang J, Jia R, Zheng X, Sun Z, Liu R, Zong W. Drinking water disinfection byproduct iodoacetic acid interacts with catalase and induces cytotoxicity in mouse primary hepatocytes. CHEMOSPHERE 2018; 210:824-830. [PMID: 30048934 DOI: 10.1016/j.chemosphere.2018.07.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 07/11/2018] [Accepted: 07/12/2018] [Indexed: 06/08/2023]
Abstract
Disinfection byproducts (DBPs) are produced during the disinfection of drinking water and pose a hazard to human health. As a typical type of DBPs, iodoacetic acid (IAA) exhibits prominent cytotoxicity in mammalian cell systems which links with oxidative stress. However, little is known about the relationship of catalase (CAT) with the cytotoxicity of IAA and the adverse effects of IAA to CAT. This study investigated the effects of IAA on the cell viability and CAT activity in the mouse primary hepatocytes. It was shown that IAA exposure induced the loss of cell viability and the increase of intracellular CAT activity. Intracellular CAT activity significantly increased due to the stimulation of CAT production under IAA exposure. The molecular CAT activity was inhibited due to the direct interaction of IAA with HIS 74 and TYR 357 around the active sites of CAT. IAA binds to CAT with (4.05 ± 1.98) sites via van der Waals and hydrogen bonding interactions, resulting in the loosening of protein skeletons and the change of protein size.
Collapse
Affiliation(s)
- Jing Wang
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai 264005, PR China.
| | - Rui Jia
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai 264005, PR China
| | - Xiaolin Zheng
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai 264005, PR China
| | - Zhiqiang Sun
- School of Environmental Science and Engineering, Shandong University, China -America CRC for Environment & Health, Shandong Province, 27# Shanda South Road, Jinan, 250100, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, China -America CRC for Environment & Health, Shandong Province, 27# Shanda South Road, Jinan, 250100, PR China
| | - Wansong Zong
- College of Population, Resources and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, 250014, PR China
| |
Collapse
|
15
|
Wang J, Zheng X, Wang W, Guo H, Liu R, Zong W. A study on the interaction between cadmium and α-chymotrypsin and the underlying mechanisms. J Biochem Mol Toxicol 2018; 33:e22248. [DOI: 10.1002/jbt.22248] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/09/2018] [Accepted: 09/07/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Jing Wang
- Department of Environmental Science; School of Environmental and Material Engineering, Yantai University; Yantai China
| | - Xiaolin Zheng
- Department of Environmental Science; School of Environmental and Material Engineering, Yantai University; Yantai China
| | - Weichao Wang
- Department of Environmental Engineering, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health; Jinan China
| | - Hongli Guo
- Department of Environmental Engineering, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health; Jinan China
| | - Rutao Liu
- Department of Environmental Engineering, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health; Jinan China
| | - Wansong Zong
- College of Geography and Environment, Department of Environmental Science, College of Population, Resources and Environment, Shandong Normal University; Jinan China
| |
Collapse
|
16
|
Pan GY, Jia HR, Zhu YX, Wu FG. Turning double hydrophilic into amphiphilic: IR825-conjugated polymeric nanomicelles for near-infrared fluorescence imaging-guided photothermal cancer therapy. NANOSCALE 2018; 10:2115-2127. [PMID: 29326993 DOI: 10.1039/c7nr07495f] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Developing biocompatible and photodegradable photothermal agents (PTAs) holds great promise for potential clinical applications in photothermal cancer therapy. Herein, a new PTA was innovatively constructed by conjugating the hydrophobic near-infrared (NIR) heptamethine cyanine molecule IR825-NH2 with a double hydrophilic block copolymer methoxypoly(ethylene glycol)5k-block-poly(l-aspartic acid sodium salt)10 (abbreviated as PEG-PLD) via amine-carboxyl reaction. The as-designed PEG-PLD(IR825) was amphiphilic and could self-assemble into polymeric nanomicelles in aqueous solutions. Benefiting from the chemical conjugation strategy, PEG-PLD(IR825) nanomicelles realized a considerably high drug loading rate (∼21.0%) and substantially avoided the premature release of IR825 during systemic circulation. Confocal imaging revealed that the nanomicelles mainly located at mitochondria and endoplasmic reticulum after cellular internalization. In vitro photothermal therapy demonstrated the excellent cancer killing efficiency of PEG-PLD(IR825) nanomicelles due to their high light-to-heat conversion efficiency upon NIR laser irradiation. In addition, PEG-PLD(IR825) nanomicelles showed polarity-sensitive fluorescence at ∼610 nm (under 552 nm excitation) and 830 nm (under 780 nm excitation), which was especially useful for both in vitro visible fluorescence imaging and in vivo near-infrared fluorescence imaging-guided photothermal therapy (PTT). At the in vivo level, PEG-PLD(IR825) nanomicelles exhibited an excellent tumor-homing ability and a long retention time in tumor tissues as evidenced by the in vivo fluorescence imaging results. The desirable properties of PEG-PLD(IR825) nanomicelles ensured their effective tumor ablation during PTT treatment. More importantly, the PEG-PLD(IR825) nanomicelles underwent degradation after laser irradiation, which ensured their post-treatment biosafety. Therefore, the nanomicelles are promising to serve as an efficient and safe PTA for imaging-guided photothermal cancer therapy.
Collapse
Affiliation(s)
- Guang-Yu Pan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | | | | | | |
Collapse
|
17
|
Kameta N, Matsuzawa T, Yaoi K, Fukuda J, Masuda M. Glycolipid-based nanostructures with thermal-phase transition behavior functioning as solubilizers and refolding accelerators for protein aggregates. SOFT MATTER 2017; 13:3084-3090. [PMID: 28361133 DOI: 10.1039/c7sm00310b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The self-assembly of synthetic glycolipids produced nanostructures such as vesicles and nanotubes consisting of bilayer membranes, which underwent a gel-to-liquid crystalline thermal phase transition. Vesicles formed at temperatures above the thermal phase transition temperatures (Tg-l) could solubilize aggregates of denatured proteins by trapping them in the fluid bilayer membranes. Cooling to temperatures below Tg-l caused a morphological transformation into nanotubes that accompanied the thermal phase transition from the fluid to the solid state. This phenomenon allowed the trapped proteins to be quickly released into the bulk solution and simultaneously facilitated the refolding of the proteins. The refolding efficiency strongly depended on the electrostatic attraction between the bilayer membranes of the nanostructures and the proteins. Because of the long shape (>400 nm) of the nanotubes, simple membrane filtration through a pore size of 200 nm led to complete separation and recovery of the refolded proteins (3-9 nm sizes).
Collapse
Affiliation(s)
- N Kameta
- Research Institute for Sustainable Chemistry, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
| | | | | | | | | |
Collapse
|
18
|
Heteroprotein complex coacervation: A generic process. Adv Colloid Interface Sci 2017; 239:115-126. [PMID: 27370709 DOI: 10.1016/j.cis.2016.06.009] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 06/07/2016] [Accepted: 06/12/2016] [Indexed: 11/23/2022]
Abstract
Proteins exhibit a rich diversity of functional, physico-chemical and biodegradable properties which makes them appealing for various applications in the food and non-food sectors. Such properties are attributed to their ability to interact and assemble into a diversity of supramolecular structures. The present review addresses the updated research progress in the recent field of complex coacervation made from mixtures of oppositely charged proteins (i.e. heteroprotein systems). First, we describe briefly the main proteins used for heteroprotein coacervation. Then, through some selected examples, we illustrate the particularity and specificity of each heteroprotein system and the requirements that drive optimal assembly into coacervates. Finally, possible and promising applications of heteroprotein coacervates are mentioned.
Collapse
|
19
|
Kameta N, Akiyama H, Masuda M, Shimizu T. Effect of Photoinduced Size Changes on Protein Refolding and Transport Abilities of Soft Nanotubes. Chemistry 2016; 22:7198-205. [DOI: 10.1002/chem.201504613] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Naohiro Kameta
- Research Institute for Sustainable Chemistry; National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Central 5, 1-1-1 Higashi, Tsukuba Ibaraki 305-8565 Japan
| | - Haruhisa Akiyama
- Research Institute for Sustainable Chemistry; National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Central 5, 1-1-1 Higashi, Tsukuba Ibaraki 305-8565 Japan
| | - Mitsutoshi Masuda
- Research Institute for Sustainable Chemistry; National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Central 5, 1-1-1 Higashi, Tsukuba Ibaraki 305-8565 Japan
| | - Toshimi Shimizu
- AIST Fellow; National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Central 5, 1-1-1 Higashi, Tsukuba Ibaraki 305-8565 Japan
| |
Collapse
|
20
|
Wu FG, Jiang YW, Chen Z, Yu ZW. Folding Behaviors of Protein (Lysozyme) Confined in Polyelectrolyte Complex Micelle. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3655-3664. [PMID: 27022665 DOI: 10.1021/acs.langmuir.6b00235] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The folding/unfolding behavior of proteins (enzymes) in confined space is important for their properties and functions, but such a behavior remains largely unexplored. In this article, we reported our finding that lysozyme and a double hydrophilic block copolymer, methoxypoly(ethylene glycol)5K-block-poly(l-aspartic acid sodium salt)10 (mPEG(5K)-b-PLD10), can form a polyelectrolyte complex micelle with a particle size of ∼30 nm, as verified by dynamic light scattering and transmission electron microscopy. The unfolding and refolding behaviors of lysozyme molecules in the presence of the copolymer were studied by microcalorimetry and circular dichroism spectroscopy. Upon complex formation with mPEG(5K)-b-PLD10, lysozyme changed from its initial native state to a new partially unfolded state. Compared with its native state, this copolymer-complexed new folding state of lysozyme has different secondary and tertiary structures, a decreased thermostability, and significantly altered unfolding/refolding behaviors. It was found that the native lysozyme exhibited reversible unfolding and refolding upon heating and subsequent cooling, while lysozyme in the new folding state (complexed with the oppositely charged PLD segments of the polymer) could unfold upon heating but could not refold upon subsequent cooling. By employing the heating-cooling-reheating procedure, the prevention of complex formation between lysozyme and polymer due to the salt screening effect was observed, and the resulting uncomplexed lysozyme regained its proper unfolding and refolding abilities upon heating and subsequent cooling. Besides, we also pointed out the important role the length of the PLD segment played during the formation of micelles and the monodispersity of the formed micelles. Furthermore, the lysozyme-mPEG(5K)-b-PLD10 mixtures prepared in this work were all transparent, without the formation of large aggregates or precipitates in solution as frequently observed in other protein-polyelectrolyte systems. Hence, the present protein-PEGylated poly(amino acid) mixture provides an ideal water-soluble model system to study the important role of electrostatic interaction in the complexation between proteins and polymers, leading to important new knowledge on the protein-polymer interactions. Moreover, the polyelectrolyte complex micelle formed between protein and PEGylated polymer may provide a good drug delivery vehicle for therapeutic proteins.
Collapse
Affiliation(s)
- Fu-Gen Wu
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China
| | - Yao-Wen Jiang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China
| | - Zhan Chen
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Zhi-Wu Yu
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
| |
Collapse
|
21
|
Kuchlyan J, Roy A, Dutta R, Sen S, Sarkar N. Effect of the submicellar concentration of bile salts on structural alterations of β-casein micelles. RSC Adv 2016. [DOI: 10.1039/c6ra14804b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The role of bile salts, sodium deoxycholate (NaDC) and sodium cholate (NaCh), on the self-assembly behavior of β-casein micelles (β-CMs) was investigated using various fluorescence techniques.
Collapse
Affiliation(s)
- Jagannath Kuchlyan
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Arpita Roy
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Rupam Dutta
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Swagata Sen
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Nilmoni Sarkar
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| |
Collapse
|
22
|
Wang J, Wang J, Song W, Yang X, Zong W, Liu R. Molecular mechanism investigation of the neutralization of cadmium toxicity by transferrin. Phys Chem Chem Phys 2016; 18:3536-44. [DOI: 10.1039/c5cp06100h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Molecular docking results of the CdCl2–transferrin complex: the preferred binding sites in transferrin are labelled as sites H1–H4 and E1–E16.
Collapse
Affiliation(s)
- Jing Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- China–America CRC for Environment & Health
- Shandong Province
| | - Jinhu Wang
- College of Chemistry Chemical Engineering and Material Science
- Zaozhuang University
- Zaozhuang
- China
| | - Wei Song
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- China–America CRC for Environment & Health
- Shandong Province
| | - Xinping Yang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- China–America CRC for Environment & Health
- Shandong Province
| | - Wansong Zong
- College of Population
- Resources and Environment
- Shandong Normal University
- Jinan 250014
- P. R. China
| | - Rutao Liu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- China–America CRC for Environment & Health
- Shandong Province
| |
Collapse
|
23
|
Wu FG, Jiang YW, Sun HY, Luo JJ, Yu ZW. Complexation of Lysozyme with Sodium Poly(styrenesulfonate) via the Two-State and Non-Two-State Unfoldings of Lysozyme. J Phys Chem B 2015; 119:14382-92. [DOI: 10.1021/acs.jpcb.5b07277] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fu-Gen Wu
- Key
Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, People’s Republic of China
| | - Yao-Wen Jiang
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, People’s Republic of China
| | - Hai-Yuan Sun
- Key
Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Jun-Jie Luo
- Key
Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Zhi-Wu Yu
- Key
Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| |
Collapse
|
24
|
Holm LS, Thulstrup PW, Kasimova MR, van de Weert M. Preferential Interactions and the Effect of Protein PEGylation. PLoS One 2015; 10:e0133584. [PMID: 26230338 PMCID: PMC4521882 DOI: 10.1371/journal.pone.0133584] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 06/29/2015] [Indexed: 01/29/2023] Open
Abstract
Background PEGylation is a strategy used by the pharmaceutical industry to prolong systemic circulation of protein drugs, whereas formulation excipients are used for stabilization of proteins during storage. Here we investigate the role of PEGylation in protein stabilization by formulation excipients that preferentially interact with the protein. Methodology/Principal Findings The model protein hen egg white lysozyme was doubly PEGylated on two lysines with 5 kDa linear PEGs (mPEG-succinimidyl valerate, MW 5000) and studied in the absence and presence of preferentially excluded sucrose and preferentially bound guanine hydrochloride. Structural characterization by far- and near-UV circular dichroism spectroscopy was supplemented by investigation of protein thermal stability with the use of differential scanning calorimetry, far and near-UV circular dichroism and fluorescence spectroscopy. It was found that PEGylated lysozyme was stabilized by the preferentially excluded excipient and destabilized by the preferentially bound excipient in a similar manner as lysozyme. However, compared to lysozyme in all cases the melting transition was lower by up to a few degrees and the calorimetric melting enthalpy was decreased to half the value for PEGylated lysozyme. The ratio between calorimetric and van’t Hoff enthalpy suggests that our PEGylated lysozyme is a dimer. Conclusion/Significance The PEGylated model protein displayed similar stability responses to the addition of preferentially active excipients. This suggests that formulation principles using preferentially interacting excipients are similar for PEGylated and non-PEGylated proteins.
Collapse
Affiliation(s)
- Louise Stenstrup Holm
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- * E-mail:
| | - Peter W. Thulstrup
- Department of Chemistry, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Marina R. Kasimova
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marco van de Weert
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
25
|
Sulewska AM, Olsen K, Sørensen JC, Øgendal LH. Chaperone-like activity of β-casein and its effect on residualin vitroactivity of horseradish peroxidase. Int J Food Sci Technol 2014. [DOI: 10.1111/ijfs.12600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anna M. Sulewska
- Department of Food Science; Faculty of Science; University of Copenhagen; Rolighedsvej 30 DK-1958 Frederiksberg C Denmark
| | - Karsten Olsen
- Department of Food Science; Faculty of Science; University of Copenhagen; Rolighedsvej 30 DK-1958 Frederiksberg C Denmark
| | - Jens C. Sørensen
- Department of Food Science; Faculty of Science; University of Copenhagen; Rolighedsvej 30 DK-1958 Frederiksberg C Denmark
| | - Lars H. Øgendal
- The Niels Bohr Institute; Faculty of Science; University of Copenhagen; Blegdamsvej 17 DK-2100 Copenhagen Ø Denmark
| |
Collapse
|
26
|
Pedersen C, Vallhov H, Engqvist H, Scheynius A, Strømme M. Nanoscale size control of protein aggregates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:3320-3326. [PMID: 23606559 DOI: 10.1002/smll.201300149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 02/14/2013] [Indexed: 06/02/2023]
Abstract
Herein, a novel method to synthesize soluble, sub-micrometer sized protein aggregates is demonstrated by mixing native and denatured proteins without using bacteria and contaminating proteins. Ovalbumin (OVA) is employed as a model protein. The average size of the formed aggregates can be controlled by adjusting the fraction of denatured protein in the sample and it is possible to make unimodal size distributions of protein aggregates. OVA aggregates with a size of ∼95 nm are found to be more immunogenic compared to native OVA in a murine splenocyte proliferation assay. These results suggest that the novel method of engineering size specific sub-micrometer sized aggregates may constitute a potential route to increasing the efficacy of protein vaccines. The protein aggregates may also be promising for use in other applications including the surface functionalization of biomaterials and as industrial catalysis materials.
Collapse
Affiliation(s)
- Christian Pedersen
- Department of Engineering Sciences, Nanotechnology and Functional Materials, The Ångström Laboratory, Uppsala University, 751 21 Uppsala, Sweden.
| | | | | | | | | |
Collapse
|
27
|
Reversible and non-reversible thermal denaturation of lysozyme with varying pH at low ionic strength. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2013; 1834:2064-70. [DOI: 10.1016/j.bbapap.2013.06.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 05/29/2013] [Accepted: 06/04/2013] [Indexed: 12/23/2022]
|
28
|
de Kruif CGK, Pedersen J, Huppertz T, Anema SG. Coacervates of lactotransferrin and β- or κ-casein: structure determined using SAXS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:10483-10490. [PMID: 23859400 DOI: 10.1021/la402236f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Lactotransferrin (LF) is a large globular protein in milk with immune-regulatory and bactericidal properties. At pH 6.5, LF (M = 78 kDa) carries a net (calculated) charge of +21. β-Casein (BCN) and κ-casein (KCN) are part of the casein micelle complex in milk. Both BCN and KCN are amphiphillic proteins with a molar mass of 24 and 19 kDa and carry net charges of -14 and -4, respectively. Both BCN and KCN form soap-like micelles, with 40 and 65 monomers, respectively. The net negative charges are located in the corona of the micelles. On mixing LF with the caseins, coacervates are formed. We analyzed the structure of these coarcervates using SAXS. It was found that LF binds to the corona of the micellar structures, at the charge neutrality point. BCN/LF and KCN/LF ratios at the charge neutrality point were found to be ~1.2 and ~5, respectively. We think that the findings are relevant for the protection mechanism of globular proteins in bodily fluids where unstructured proteins are abundant (saliva). The complexes will prevent docking of enzymes on specific charged groups on the globular protein.
Collapse
Affiliation(s)
- C G Kees de Kruif
- Van 't Hoff laboratory for Physical and Colloid Chemistry, Padualaan 8, Utrecht University, The Netherlands.
| | | | | | | |
Collapse
|
29
|
Anema SG, de Kruif C(K. Coacervates of lysozyme and β-casein. J Colloid Interface Sci 2013; 398:255-61. [DOI: 10.1016/j.jcis.2013.02.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 02/05/2013] [Accepted: 02/07/2013] [Indexed: 11/26/2022]
|
30
|
Zhu K, Ye T, Liu J, Peng Z, Xu S, Lei J, Deng H, Li B. Nanogels fabricated by lysozyme and sodium carboxymethyl cellulose for 5-fluorouracil controlled release. Int J Pharm 2013; 441:721-7. [DOI: 10.1016/j.ijpharm.2012.10.022] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 09/18/2012] [Accepted: 10/11/2012] [Indexed: 10/27/2022]
|
31
|
Luo JJ, Wu FG, Qin SS, Yu ZW. In Situ Unfolded Lysozyme Induces the Lipid Lateral Redistribution of a Mixed Lipid Model Membrane. J Phys Chem B 2012; 116:12381-8. [DOI: 10.1021/jp304339t] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun-Jie Luo
- Key Laboratory of Bioorganic Phosphorous
Chemistry
and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic
of China
| | - Fu-Gen Wu
- Key Laboratory of Bioorganic Phosphorous
Chemistry
and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic
of China
| | - Shan-Shan Qin
- Key Laboratory of Bioorganic Phosphorous
Chemistry
and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic
of China
| | - Zhi-Wu Yu
- Key Laboratory of Bioorganic Phosphorous
Chemistry
and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic
of China
| |
Collapse
|
32
|
Luo JJ, Wu FG, Yu JS, Wang R, Yu ZW. Denaturation Behaviors of Two-State and Non-Two-State Proteins Examined by an Interruption–Incubation Protocol. J Phys Chem B 2011; 115:8901-9. [DOI: 10.1021/jp200296v] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun-Jie Luo
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Fu-Gen Wu
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Ji-Sheng Yu
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Rui Wang
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Zhi-Wu Yu
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| |
Collapse
|