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Parvej H, Begum S, Dalui R, Paul S, Mondal B, Sardar S, Sepay N, Maiti G, Halder UC. Coumarin derivatives inhibit the aggregation of β-lactoglobulin. RSC Adv 2022; 12:17020-17028. [PMID: 35755586 PMCID: PMC9174738 DOI: 10.1039/d2ra01029a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 05/15/2022] [Indexed: 11/21/2022] Open
Abstract
The binding of a small molecule to a protein through non-covalent interactions mainly depends on its size and electronic environment. Such binding can change the stability of the three dimensional protein structure which sometimes may destabilize it to accelerate or to inhibit protein aggregation. Coumarin is a widely used fluorescent dye with several biological applications. Different substituents (electron-donating and electron-withdrawing) at different positions of the coumarin moiety can influence its molecular volume, physical and chemical properties. Here we investigate the effect of such substituents of coumarin on the aggregation of a model protein, beta-lactoglobulin (β-lg) through a multi spectroscopic approach. It was observed that coumarin methyl ester with an 8-hydroxyl group can inhibit the β-lg aggregation. This compound can bind the hydrophobic site of beta-lactoglobulin and stabilize a particular protein conformation through the formation of hydrogen bond and hydrophobic interactions. Thus a properly designed compound can inhibit protein–protein interactions through protein–small molecule interactions. Other coumarinoid compounds also are effective in the prevention of thermal aggregation of β-lg. Aggregation of β-lactoglobulin (β-lg) was inhibited through the stabilization of the native structure by various non-covalent interactions of coumarin derivatives. The 8-hydroxy compound was most effective against the self-assembly of β-lg.![]()
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Affiliation(s)
- Hasan Parvej
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Shahnaz Begum
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Ramkrishna Dalui
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Swarnali Paul
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Barun Mondal
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Subrata Sardar
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Nayim Sepay
- Department of Chemistry, Lady Brabourne College, Kolkata 700017, India
| | - Gourhari Maiti
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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2
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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
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Wang Y, Gong M, Huang Z, Min H, Yu P, Tang F, Ye Y, Zhu S, Hu Z, Zeng Z, Chen J. Spectroscopic and Theoretical Investigation of β-Lactoglobulin Interactions with Hematoporphyrin and Protoporphyrin IX. ACS OMEGA 2021; 6:9680-9691. [PMID: 33869948 PMCID: PMC8047746 DOI: 10.1021/acsomega.1c00279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
Hematoporphyrin (HP) and protoporphyrin IX (PPIX) are useful porphyrin photosensitizers with significant application values in photodynamic therapy. Currently, many strategies have been developed to improve their clinical performance, such as incorporating them with nanoparticle (NP) carriers. In this work, we studied the possibility of using β-lactoglobulin (BLG) as a potential NP carrier due to their hydrophobic affinity, pH sensitivity, and low cost of extraction and preservation. The interaction mechanisms of BLG with HP and PPIX were investigated using spectroscopic techniques and molecular docking methods. The molecular docking results agree well with the experimental results, which demonstrate that the formations of HP-BLG and PPIX-BLG complexes are endothermic processes and the main acting force is hydrophobic force. Furthermore, the opening-closure states of EF loop have a great influence on the HP-BLG complex formation, where the central hydrophobic cavity of β-barrel is available for HP binding at pH 7.4 but not available at pH 6.2. However, the formation of the PPIX-BLG complex is less dependent on the states of the EF loop, and the binding sites of PPIX are both located on the external surface of BLG under both pH 7.4 and 6.2 conditions. All of our results would provide new insight into the mechanisms of noncovalent interactions between BLG and HP/PPIX. It is believed that this work indicated the potential application values of BLG in designing pH-sensitive carriers for the delivery of HP and PPIX, as well as other poorly soluble drugs.
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Affiliation(s)
- Yun Wang
- School
of Basic Medical Sciences, Guizhou Medical
University, Guiyang 550025, P. R. China
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Min Gong
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Zhuo Huang
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Hai Min
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Peng Yu
- School
of Basic Medical Sciences, Guizhou Medical
University, Guiyang 550025, P. R. China
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Fuzhou Tang
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Yuannong Ye
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Simian Zhu
- School
of Basic Medical Sciences, Guizhou Medical
University, Guiyang 550025, P. R. China
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Zuquan Hu
- School
of Basic Medical Sciences, Guizhou Medical
University, Guiyang 550025, P. R. China
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Zhu Zeng
- School
of Basic Medical Sciences, Guizhou Medical
University, Guiyang 550025, P. R. China
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
| | - Jin Chen
- School
of Basic Medical Sciences, Guizhou Medical
University, Guiyang 550025, P. R. China
- Key
Laboratory of Biology and Medical Engineering/Immune Cells and Antibody
Engineering Research Center of Guizhou Province, School of Biology
and Engineering, Guizhou Medical University, Guiyang 550025, P. R. China
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Maity S, Sepay N, Pal S, Sardar S, Parvej H, Pal S, Chakraborty J, Pradhan A, Halder UC. Modulation of amyloid fibrillation of bovine β-lactoglobulin by selective methionine oxidation. RSC Adv 2021; 11:11192-11203. [PMID: 35423661 PMCID: PMC8695858 DOI: 10.1039/d0ra09060c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 03/05/2021] [Indexed: 12/13/2022] Open
Abstract
Deposition of oxidation-modified proteins during normal aging and oxidative stress are directly associated with systemic amyloidoses. Methionine (Met) is believed to be one of the most readily oxidisable amino acid residues of protein. Bovine beta-lactoglobulin (β-lg), a model globular whey protein, has been presented as a subsequent paradigm for studies on protein aggregation and amyloid formation. Herein, we investigated the effect of t-butyl hydroperoxide (tBHP)-induced oxidation on structure, compactness and fibrillation propensity of β-lg at physiological pH. Notably, whey protein modification, specifically Met residues, plays an important role in the dairy industry during milk processing and lowering nutritional value and ultimately affecting their technological properties. Several bio-physical studies revealed enhanced structural flexibility and aggregation propensity of oxidised β-lg in a temperature dependent manner. A molecular docking study is used to predict possible interactions with tBHP and infers selective oxidation of methionine residues at 7, 24 and 107 positions. From our studies, it can be corroborated that specific orientations of Met residues directs the formation of a partially unfolded state susceptible to fibrillation with possible different cytotoxic effects. Our studies have greater implications in deciphering the underlying mechanism of different whey proteins encountering oxidative stress. Our findings are also important to elucidate the understanding of oxidation induced amyloid fibrillation of protein which may constitute a new route to pave the way for a modulatory role of oxidatively stressed proteins in neurological disorders.
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Affiliation(s)
- Sanhita Maity
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Nayim Sepay
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Sampa Pal
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Subrata Sardar
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Hasan Parvej
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Swarnali Pal
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Jishnu Chakraborty
- Department of Chemistry, Camellia Institute of Engineering and Technology Budbud Burdwan WB India
| | - Anirban Pradhan
- Department of Chemistry, Ramakrishna Mission Residential College (Autonomous), Vivekananda Centre for Research Narendrapur Kolkata-700103 India
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Sharma A, Ghosh KS. Studies on Molecular Interactions between Bovine β-Lactoglobulin and Silver Nanoparticles. Protein Pept Lett 2021; 27:793-800. [PMID: 32003652 DOI: 10.2174/0929866527666200129123018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/07/2019] [Accepted: 12/09/2019] [Indexed: 01/19/2023]
Abstract
BACKGROUND Silver Nanoparticles (AgNPs) were found to modulate the fibrillation of Bovine Β-Lactoglobulin (BLG). OBJECTIVE To gain an insight regarding the mechanism of BLG aggregation modulation by AgNPs at molecular level, studies on the interactions between BLG and AgNPs were carried out. METHODS Protein-ligand interactions were studied based on Trp fluorescence quenching (at four different temperatures), synchronous and three-dimensional fluorescence and circular dichroism spectroscopy (far-UV and near-UV). RESULTS Protein-nanoparticles association constant was in the range of 106 -1010 M-1 and the quenching constant was determined as ~107 M-1. Ground state complexation between the protein and nanoparticles was predicted. Change in polarity surrounding the Trp residue was not detected by synchronous and three-dimensional fluorescence spectroscopy. AgNPs caused a global change in the secondary and tertiary structure of the protein as revealed from far-UV and near-UV CD spectroscopy. Enthalpy driven complexation between the protein and nanoparticles indicates the involvement of hydrogen bonding and/or van der Waals interactions. CONCLUSION Modulation of BLG aggregation by AgNPs is due to strong binding of the nanoparticles with BLG, which also causes structural perturbations of the protein.
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Affiliation(s)
- Anchal Sharma
- Department of Chemistry, National Institute of Technology, Hamirpur, Himachal Pradesh 177005, India
| | - Kalyan Sundar Ghosh
- Department of Chemistry, National Institute of Technology, Hamirpur, Himachal Pradesh 177005, India
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Pal S, Maity S, Sardar S, Begum S, Dalui R, Parvej H, Bera K, Pradhan A, Sepay N, Paul S, Halder UC. Antioxidant ferulic acid prevents the aggregation of bovine β-lactoglobulin in vitro. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-01796-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Gambucci M, Gentili PL, Sassi P, Latterini L. A multi-spectroscopic approach to investigate the interactions between Gramicidin A and silver nanoparticles. SOFT MATTER 2019; 15:6571-6580. [PMID: 31364666 DOI: 10.1039/c9sm01110b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The comprehension and control of the interactions between nanoparticles and proteins at a molecular level are crucial to improve biomedical applications of nanomaterials and to develop nanosystems able to influence and regulate the conformational changes in proteins. In this work, we explore the interactions between Gramicidin A peptide (GramA) and dodecanethiol-stabilized small silver nanoparticles (D-AgNPs), paying particular attention to the effect on GramA conformation in POPC bilayers. D-AgNPs have been prepared to have dimensions (5 nm) and a hydrophobic nature compatible with the POPC lipid bilayer. Fluorescence, Raman and IR spectroscopies have been used to investigate both peptide conformation and its position inside the phospholipid bilayer. Results are discussed in terms of solvent exposure and conformation of GramA peptide.
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Affiliation(s)
- Marta Gambucci
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto, 8- 06123 Perugia, Italy.
| | - Pier Luigi Gentili
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto, 8- 06123 Perugia, Italy.
| | - Paola Sassi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto, 8- 06123 Perugia, Italy.
| | - Loredana Latterini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto, 8- 06123 Perugia, Italy.
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