1
|
Chen N, Ren Y, Xing L, Liu Z, Chen L, Liu S, Zhou X. In situ Raman spectral observation of succinimide intermediates in amyloid fibrillation kinetics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 309:123867. [PMID: 38198993 DOI: 10.1016/j.saa.2024.123867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/28/2023] [Accepted: 01/05/2024] [Indexed: 01/12/2024]
Abstract
Succinimide intermediates play the crucial role in the nucleation process for protein amyloid fibril formation, as they can usually induce a non-native conformation in a fraction of soluble proteins to render amyloidogenicity and neurotoxicity. Thus, in situ detection of succinimide intermediates during amyloid fibrillation kinetics is of considerable importance, albeit challenging, because these succinimides are generally unstable in physiological conditions. Here, we found an in situ Raman spectral fingerprint to trace the succinimide intermediates in amyloid fibril formation, wherein the carbonyl symmetric stretching of cyclic imide in the succinimide derivative is located at ca. 1790 cm-1. Using its intensity as an indicator of succinimide intermediates, we have in situ detected and unravelled the role of succinimide intermediates during the oligomer formation from the Bz-Asp-Gly-NH2 dipeptide or the amyloid fibrillation kinetics of lysozyme with thermal/acid treatment.
Collapse
Affiliation(s)
- Ning Chen
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yi Ren
- Key Laboratory of Tropical Biological Resources of the Ministry of Education, Department of Pharmaceutical Sciences, Hainan University, Haikou, Hainan 570228, China
| | - Lei Xing
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Zhongqiang Liu
- Key Laboratory of Tropical Biological Resources of the Ministry of Education, Department of Pharmaceutical Sciences, Hainan University, Haikou, Hainan 570228, China.
| | - Lin Chen
- School of Physics and Materials Engineering, Hefei Normal University, Hefei, Anhui 230601, China
| | - Shilin Liu
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaoguo Zhou
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
| |
Collapse
|
2
|
Liu L, Li X, Chen N, Chen X, Xing L, Zhou X, Liu S. Influence of cadmium ion on denaturation kinetics of hen egg white-lysozyme under thermal and acidic conditions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 296:122650. [PMID: 36989696 DOI: 10.1016/j.saa.2023.122650] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
To study the influence of Cd(II) ions on denaturation kinetics of hen egg white lysozyme (HEWL) under thermal and acidic conditions, spontaneous Raman spectroscopy in conjunction with Thioflavin-T fluorescence, AFM imaging, far-UV circular dichroism spectroscopy, and transmittance assays was conducted. Four distinctive Raman spectral markers for protein tertiary and secondary structures were recorded to follow the kinetics of conformational transformation. Through comparing variations of these markers in the presence or absence of Cd(II) ions, Cd(II) ions show an ability to efficiently accelerate the disruption of tertiary structure, and meanwhile, to promote the direct formation of organized β-sheets from the uncoiling of α-helices by skipping intermediate random coils. More significantly, with the action of Cd(II) ions, the initially resulting oligomers with disordered structures tend to assemble into aggregates with random structures like gels more than amyloid fibrils, along with a so-called "off-pathway" denaturation pathway. Our results advance the in-depth understanding of corresponding ion-specific effects.
Collapse
Affiliation(s)
- Liming Liu
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xinfei Li
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Ning Chen
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiaodong Chen
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Lei Xing
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Xiaoguo Zhou
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.
| | - Shilin Liu
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.
| |
Collapse
|
3
|
Mou HZ, Zhao CL, Song J, Xing L, Chen HY, Xu JJ. Ambient Temperature Affects Protein Self-Assembly by Interfering with the Interfacial Aggregation Behavior. ACS OMEGA 2023; 8:24999-25008. [PMID: 37483188 PMCID: PMC10357426 DOI: 10.1021/acsomega.3c01606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 06/22/2023] [Indexed: 07/25/2023]
Abstract
Amyloid fibrillation is known to be associated with degenerative diseases, and mature fibrils are also considered as valuable biomedical materials. Thus, the mechanism and influencing factors of fibrillation have always been the focus of research. However, in vitro studies are always plagued by low reproducibility of kinetics and the molecular mechanism of amyloid fibrillation is under debate until now. Here, we identified the ambient temperature (AT) as a non-negligible interfering factor in in vitro self-assembly of globular protein hen egg-white lysozyme for the first time. By multimodal molecular spectroscopy methods, not only the effect of ATs on the kinetics of protein aggregation was described but also the conformational changes of the molecular structure with different ATs were captured. Through investigating the dependence of interfacial area and catalysis, the reason for this influence was construed by the various aggregation behaviors of protein molecules in the two-phase interface. The results suggest that in vitro mechanism research on protein fibrillation needs to first clarify the AT for a more accurate comparative analysis. The proposal of this concept will provide a new clue for a deeper understanding of the mechanism of protein self-assembly and may have an impact on evaluating the efficiency of amyloid accelerators or inhibitors based on the comparative analysis of protein self-assembly.
Collapse
|
4
|
Chen X, Xing L, Li X, Chen N, Liu L, Wang J, Zhou X, Liu S. Manganese Ion-Induced Amyloid Fibrillation Kinetics of Hen Egg White-Lysozyme in Thermal and Acidic Conditions. ACS OMEGA 2023; 8:16439-16449. [PMID: 37179629 PMCID: PMC10173442 DOI: 10.1021/acsomega.3c01531] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023]
Abstract
As manganese ions (Mn2+) are identified as an environmental risk factor for neurodegenerative diseases, uncovering their action mechanism on protein amyloid fibril formation is crucial for related disease treatments. Herein, we performed a combined study of Raman spectroscopy, atomic force microscopy (AFM), thioflavin T (ThT) fluorescence, and UV-vis absorption spectroscopy assays, in which the distinctive effect of Mn2+ on the amyloid fibrillation kinetics of hen egg white-lysozyme (HEWL) was clarified at the molecular level. With thermal and acid treatments, the unfolding of protein tertiary structures is efficiently accelerated by Mn2+ to form oligomers, as indicated by two Raman markers for the Trp residues on protein side chains: the FWHM at 759 cm-1 and the I1340/I1360 ratio. Meanwhile, the inconsistent evolutionary kinetics of the two indicators, as well as AFM images and UV-vis absorption spectroscopy assays, validate the tendency of Mn2+ toward the formation of amorphous aggregates instead of amyloid fibrils. Moreover, Mn2+ plays an accelerator role in the secondary structure transition from α-helix to organized β-sheet structures, as indicated by the N-Cα-C intensity at 933 cm-1 and the amide I position of Raman spectroscopy and ThT fluorescence assays. Notably, the more significant promotion effect of Mn2+ on the formation of amorphous aggregates provides credible clues to understand the fact that excess exposure to manganese is associated with neurological diseases.
Collapse
Affiliation(s)
- Xiaodong Chen
- Department
of Chemical Physics, University of Science
and Technology of China, Hefei 230026, China
| | - Lei Xing
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, China
| | - Xinfei Li
- Department
of Chemical Physics, University of Science
and Technology of China, Hefei 230026, China
| | - Ning Chen
- Department
of Chemical Physics, University of Science
and Technology of China, Hefei 230026, China
| | - Liming Liu
- Department
of Chemical Physics, University of Science
and Technology of China, Hefei 230026, China
| | - Jionghan Wang
- Department
of Chemical Physics, University of Science
and Technology of China, Hefei 230026, China
| | - Xiaoguo Zhou
- Department
of Chemical Physics, University of Science
and Technology of China, Hefei 230026, China
| | - Shilin Liu
- Department
of Chemical Physics, University of Science
and Technology of China, Hefei 230026, China
| |
Collapse
|
5
|
Song Y, Li T, Zhang X, Wang L. Investigating the effects of ion strength on amyloid fibril formation of rice proteins. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2022.102068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
6
|
Gao X, Wang S, Dong J, Li J, Zhang Y, Wu Y, Ba X. Effect of mono- and diketone group in curcumin analogues on amyloid fibrillation of hen egg white lysozyme. Biophys Chem 2023; 292:106913. [PMID: 36330890 DOI: 10.1016/j.bpc.2022.106913] [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: 07/08/2022] [Revised: 09/23/2022] [Accepted: 10/18/2022] [Indexed: 11/07/2022]
Abstract
Curcumin has attracted more attention because of its inhibition efficacy on protein amyloid fibrillation. However, the inhibition mechanism was still ambiguous and the clinical application of curcumin was greatly limited because of its poor stability at physiological conditions for the presence of β-diketone moiety. In this paper, a new mono-ketone-containing curcumin analogue (MDHC) was designed and synthesized to realize the possible inhibition mechanism and unveil the important role of β-diketone moiety of curcumin in the inhibition process of amyloid fibrillation using hen egg white lysozyme (HEWL) as model protein. Although all experiment results (ThT, CR, ANS and TEM) showed that the inhibitory capacity of curcumin was better than MDHC, MDHC still could show obvious inhibition effect. Molecular docking showed that both curcumin and MDHC could bind with HEWL by hydrogen bond of phenloic hydroxyl and the binding energy of MDHC was higher than that of curcumin. All the findings inferred that β-diketone group was one of great important groups in the inhibition process of HEWL amyloid fibrillation, which provided more room to construct novel inhibition reagents.
Collapse
Affiliation(s)
- Xuejiao Gao
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China
| | - Sujuan Wang
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China.
| | - Jiawei Dong
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China
| | - Jie Li
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China
| | - Yuangong Zhang
- School of Basic Medical Sciences, Hebei University, Baoding 071002, PR China
| | - Yuxia Wu
- Department of Computer Teaching, Hebei University, Baoding 071002, PR China
| | - Xinwu Ba
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China; Affiliated Hospital of Hebei University, Baoding 071000, PR China
| |
Collapse
|
7
|
Chalapathi D, Kumar A, Behera P, Sathi SN, Swaminathan R, Narayana C. Insights on Aggregation of Hen Egg-White Lysozyme from Raman Spectroscopy and MD Simulations. Molecules 2022; 27:molecules27207122. [PMID: 36296716 PMCID: PMC9609503 DOI: 10.3390/molecules27207122] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 11/07/2022] Open
Abstract
Protein misfolding and aggregation play a significant role in several neurodegenerative diseases. In the present work, the spontaneous aggregation of hen egg-white lysozyme (HEWL) in an alkaline pH 12.2 at an ambient temperature was studied to obtain molecular insights. The time-dependent changes in spectral peaks indicated the formation of β sheets and their effects on the backbone and amino acids during the aggregation process. Introducing iodoacetamide revealed the crucial role of intermolecular disulphide bonds amidst monomers in the aggregation process. These findings were corroborated by Molecular Dynamics (MD) simulations and protein-docking studies. MD simulations helped establish and visualize the unfolding of the proteins when exposed to an alkaline pH. Protein docking revealed a preferential dimer formation between the HEWL monomers at pH 12.2 compared with the neutral pH. The combination of Raman spectroscopy and MD simulations is a powerful tool to study protein aggregation mechanisms.
Collapse
Affiliation(s)
- Divya Chalapathi
- Chemistry and Physics of Materials Unit, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
| | - Amrendra Kumar
- Department of Bioscience and Bioengineering, Indian Institute of Technology-Guwahati, North Amingaon, Guwahati 781039, India
| | - Pratik Behera
- Transdisciplinary Biology Program, Rajiv Gandhi Centre for Biotechnology, Thycaud Post, Poojapura, Thiruvananthapuram 695014, India
| | - Shijulal Nelson Sathi
- Transdisciplinary Biology Program, Rajiv Gandhi Centre for Biotechnology, Thycaud Post, Poojapura, Thiruvananthapuram 695014, India
| | - Rajaram Swaminathan
- Department of Bioscience and Bioengineering, Indian Institute of Technology-Guwahati, North Amingaon, Guwahati 781039, India
- Correspondence: (R.S.); or (C.N.); Tel.: +91-471-2347-973 (R.S. & C.N.)
| | - Chandrabhas Narayana
- Chemistry and Physics of Materials Unit, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
- Correspondence: (R.S.); or (C.N.); Tel.: +91-471-2347-973 (R.S. & C.N.)
| |
Collapse
|
8
|
Yan L, Yang H, Liu N, Meng F, Zhang S. A photochromic salicylaldehyde hydrazone derivative based on CN isomerization and ESIPT mechanisms and its detection of Al 3+ in aqueous solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 275:121116. [PMID: 35316626 DOI: 10.1016/j.saa.2022.121116] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 03/01/2022] [Accepted: 03/05/2022] [Indexed: 06/14/2023]
Abstract
A simple photochromic Schiff base was successfully prepared by the condensation of salicylaldehyde and benzoyl hydrazine. This compound has reversible photochromic properties based on isomerization and ESIPT mechanisms. In organic solvents, after irradiation with 365 nm UV light for 2 min, the absorption peak at 367 nm of the compound showed a significant decrease, while a double absorption peak appeared at 418 nm and 438 nm, accompanied by a significant change of the solution color from colorless to yellow. The compound can also complex with Al3+ at the molar ratio of 2:1 in the water solution (acetonitrile/water, v/v, 1:99), resulting in significantly enhanced fluorescence of the compound, so as to achieve fluorescence detection of Al3+ in living cells and water samples.
Collapse
Affiliation(s)
- Liqiang Yan
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541006, PR China.
| | - Hong Yang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541006, PR China
| | - Nan Liu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541006, PR China
| | - Fengjuan Meng
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541006, PR China
| | - Shiqing Zhang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541006, PR China
| |
Collapse
|
9
|
Chen Y, Liu Q, Yang F, Yu H, Xie Y, Yao W. Lysozyme amyloid fibril: Regulation, application, hazard analysis, and future perspectives. Int J Biol Macromol 2022; 200:151-161. [PMID: 34995654 DOI: 10.1016/j.ijbiomac.2021.12.163] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/15/2021] [Accepted: 12/25/2021] [Indexed: 12/11/2022]
Abstract
Self-assembly of misfolded proteins into ordered fibrillar aggregates known as amyloid results in various human diseases. However, more and more proteins, whether in human body or in food, have been found to be able to form amyloid fibrils with in-depth researches. As a model protein for amyloid research, lysozyme has always been the focus of research in various fields. Firstly, the formation mechanisms of amyloid fibrils are discussed concisely. Researches on the regulation of lysozyme amyloid fibrils are helpful to find suitable therapeutic drugs and unfriendly substances. And this review article summarizes a number of exogenous substances including small molecules, nanoparticles, macromolecules, and polymers. Small molecules are mainly connected to lysozyme through hydrophobic interaction, electrostatic interaction, π-π interaction, van der Waals force and hydrogen bond. Nanoparticles inhibit the formation of amyloid fibers by stabilizing lysozyme and fixing β-sheet. Besides, the applications of lysozyme amyloid fibrils in food-related fields are considered furtherly due to outstanding physical and mechanical properties. Nevertheless, the potential health threats are still worthy of our attention. Finally, we also give suggestions and opinions on the future research direction of lysozyme amyloid fibrils.
Collapse
Affiliation(s)
- Yulun Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, No.235 Daxue West Road, Hohhot 010021, Inner Mongolia Autonomous Region, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Joint International Research Laboratory of Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Qingrun Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Joint International Research Laboratory of Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Fangwei Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, No.235 Daxue West Road, Hohhot 010021, Inner Mongolia Autonomous Region, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Joint International Research Laboratory of Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Hang Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Joint International Research Laboratory of Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yunfei Xie
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, No.235 Daxue West Road, Hohhot 010021, Inner Mongolia Autonomous Region, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Joint International Research Laboratory of Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Joint International Research Laboratory of Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China.
| |
Collapse
|
10
|
Fan W, Chen XD, Liu LM, Chen N, Zhou XG, Zhang ZH, Liu SL. Concentration-dependent influence of silver nanoparticles on amyloid fibrillation kinetics of hen egg-white lysozyme. CHINESE J CHEM PHYS 2021. [DOI: 10.1063/1674-0068/cjcp2104069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Wei Fan
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiao-dong Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Li-ming Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Ning Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiao-guo Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Zhi-hong Zhang
- School of Physics and Optoelectronics Engineering, Ludong University, Yantai 264025, China
| | - Shi-lin Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| |
Collapse
|
11
|
Zeng HJ, Wang SS, Sun LJ, Miao M, Yang R. Investigation on the effect of three isoflavones on the fibrillation of hen egg-white lysozyme. J Mol Recognit 2021; 34:e2889. [PMID: 33646596 DOI: 10.1002/jmr.2889] [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: 09/15/2020] [Revised: 12/02/2020] [Accepted: 12/21/2020] [Indexed: 11/10/2022]
Abstract
In this paper, the effects of three isoflavones including daidzein, genistein, and puerarin on fibrillation of hen egg-white lysozyme were investigated by various analytical methods. The results demonstrated that all isoflavones could effectively inhibit the fibrillogenesis of hen egg-white lysozyme and destabilized the preformed fibrils of hen egg-white lysozyme in a dose-dependent manner. To further understand the inhibition mechanism, molecular modeling was carried out. The docking results demonstrated that the isoflavones could bind to two key fibrogenic sites in hen egg-white lysozyme through van der Waals force, electrostatic forces, and hydrogen bonding, as well as σ-π stacking. By these means, isoflavones could not only obviously enhance the hydrophobicity of the binding sites, but also greatly stabilize the native state of HEWL, which was able to postpone the fibrosis process of hen egg-white lysozyme.
Collapse
Affiliation(s)
- Hua-Jin Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Sha-Sha Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Li-Jun Sun
- College of Chemistry, Green Catalysis center, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications, Zhengzhou University, Zhengzhou, China
| | - Min Miao
- College of Chemistry, Green Catalysis center, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications, Zhengzhou University, Zhengzhou, China
| | - Ran Yang
- College of Chemistry, Green Catalysis center, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications, Zhengzhou University, Zhengzhou, China
| |
Collapse
|
12
|
Chen X, Deng X, Han X, Liang Y, Meng Z, Liu R, Su W, Zhu H, Fu T. Inhibition of Lysozyme Amyloid Fibrillation by Silybin Diastereoisomers: The Effects of Stereochemistry. ACS OMEGA 2021; 6:3307-3318. [PMID: 33553948 PMCID: PMC7860231 DOI: 10.1021/acsomega.0c05788] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 01/08/2021] [Indexed: 05/24/2023]
Abstract
Silybin is a flavonoid lignin compound consisting of two diastereomers with nearly equal molar ratios. It has been reported that silybin can effectively inhibit the aggregation of amyloid protein, but the difference between the two silybin diastereomers has been rarely studied. In this work, the inhibitory ability of silybin to hen egg-white lysozyme (HEWL) was demonstrated, and the difference of kinetic parameters of two diastereomers was analyzed. Fluorescence quenching titration was utilized to analyze the binding differences to native HEWL between the diastereomers, and transmission electron microscopy (TEM) was utilized to analyze the characteristics of the surface of various samples. The differences between hydrophobicity and the secondary structure among several HEWL samples were measured by the 8-anilino-1-naphthalene sulfonic (ANS) acid fluorescence probe, Raman spectra, and far-UV circular dichroism. Moreover, the differences in the binding energy of these two diastereomers with HEWL were analyzed by molecular docking. Also, we have investigated the effect of silybin diastereomers on HEWL fibril-induced cytotoxicity in SH-SY5Y cells. Results show that silybin has a certain inhibitory effect on the HEWL fibrillogenesis process, while silybin B (SB) has a more significant inhibitory effect than silybin A (SA), especially at high concentrations. This work provides some insights into the screening of amyloid inhibitors from complicated natural products and indicates that SB has the prospect of further development as an amyloid inhibitor.
Collapse
Affiliation(s)
- Xuanyu Chen
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
- Plant
Medicine Research and Technological Development Center of Jiangsu
Province, Nanjing 210023, China
| | - Xiaomin Deng
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
- Plant
Medicine Research and Technological Development Center of Jiangsu
Province, Nanjing 210023, China
| | - Xingxing Han
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
- Plant
Medicine Research and Technological Development Center of Jiangsu
Province, Nanjing 210023, China
| | - Yinmei Liang
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
- Plant
Medicine Research and Technological Development Center of Jiangsu
Province, Nanjing 210023, China
| | - Zhiping Meng
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
- Plant
Medicine Research and Technological Development Center of Jiangsu
Province, Nanjing 210023, China
| | - Rui Liu
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
| | - Wenqiang Su
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
- Plant
Medicine Research and Technological Development Center of Jiangsu
Province, Nanjing 210023, China
| | - Huaxu Zhu
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
- Plant
Medicine Research and Technological Development Center of Jiangsu
Province, Nanjing 210023, China
- Separation
Engineering of Chinese Traditional Medicine Compound, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Tingming Fu
- School
of Pharmacy, Nanjing University of Chinese
Medicine, Nanjing 210023, China
- Plant
Medicine Research and Technological Development Center of Jiangsu
Province, Nanjing 210023, China
- Separation
Engineering of Chinese Traditional Medicine Compound, Nanjing University of Chinese Medicine, Nanjing 210023, China
| |
Collapse
|
13
|
Fan W, Xing L, Chen N, Zhou X, Yu Y, Liu S. Promotion Effect of Succinimide on Amyloid Fibrillation of Hen Egg-White Lysozyme. J Phys Chem B 2019; 123:8057-8064. [DOI: 10.1021/acs.jpcb.9b06958] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Wei Fan
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Lei Xing
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Ning Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaoguo Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yuanqin Yu
- Department of Physics, Anhui University, Hefei, Anhui 230601, China
| | - Shilin Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| |
Collapse
|