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Probing the ligand-binding pocket of recombinant β-lactoglobulin: Calorimetric and spectroscopic studies. Biophys Chem 2022; 283:106770. [DOI: 10.1016/j.bpc.2022.106770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 11/23/2022]
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2
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Cholewski M, Tomczykowa M, Tomczyk M. A Comprehensive Review of Chemistry, Sources and Bioavailability of Omega-3 Fatty Acids. Nutrients 2018; 10:E1662. [PMID: 30400360 PMCID: PMC6267444 DOI: 10.3390/nu10111662] [Citation(s) in RCA: 166] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 10/28/2018] [Accepted: 10/29/2018] [Indexed: 12/20/2022] Open
Abstract
Omega-3 fatty acids, one of the key building blocks of cell membranes, have been of particular interest to scientists for many years. However, only a small group of the most important omega-3 polyunsaturated fatty acids are considered. This full-length review presents a broad and relatively complete cross-section of knowledge about omega-3 monounsaturated fatty acids, polyunsaturates, and an outline of their modifications. This is important because all these subgroups undoubtedly play an important role in the function of organisms. Some monounsaturated omega-3s are pheromone precursors in insects. Polyunsaturates with a very long chain are commonly found in the central nervous system and mammalian testes, in sponge organisms, and are also immunomodulating agents. Numerous modifications of omega-3 acids are plant hormones. Their chemical structure, chemical binding (in triacylglycerols, phospholipids, and ethyl esters) and bioavailability have been widely discussed indicating a correlation between the last two. Particular attention is paid to the effective methods of supplementation, and a detailed list of sources of omega-3 acids is presented, with meticulous reference to the generally available food. Both the oral and parenteral routes of administration are taken into account, and the omega-3 transport through the blood-brain barrier is mentioned. Having different eating habits in mind, the interactions between food fatty acids intake are discussed. Omega-3 acids are very susceptible to oxidation, and storage conditions often lead to a dramatic increase in this exposure. Therefore, the effect of oxidation on their bioavailability is briefly outlined.
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Affiliation(s)
- Mateusz Cholewski
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Białystok, ul. Mickiewicza 2a, 15-230 Białystok, Poland.
| | - Monika Tomczykowa
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Białystok, ul. Mickiewicza 2a, 15-230 Białystok, Poland.
| | - Michał Tomczyk
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Białystok, ul. Mickiewicza 2a, 15-230 Białystok, Poland.
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3
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Shafaei Z, Ghalandari B, Vaseghi A, Divsalar A, Haertlé T, Saboury AA, Sawyer L. β-Lactoglobulin: An efficient nanocarrier for advanced delivery systems. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:1685-1692. [PMID: 28343017 DOI: 10.1016/j.nano.2017.03.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 02/18/2017] [Accepted: 03/14/2017] [Indexed: 01/10/2023]
Abstract
Thanks to the progress of nanotechnology there are several agent-delivery systems that can be selected to achieve rapid and specific delivery of a wide variety of biologically active agents. Consequently, the manipulation and engineering of biopolymers has become one of the most exciting subjects for those who study delivery systems on the nanoscale. In this regard, both nanoparticle formation and a carrier role have been observed in the case of the globular milk whey protein, β-lactoglobulin (β-LG), setting it apart from many other proteins. To date, many efforts adopting different approaches have created β-LG nanoparticles useful in forming delivery systems for various agents with specific targets. In this review, the potential of β-LG to play the role of an efficient and diverse carrier protein, as well as its ability to form a well-targeted nano-scale delivery system is discussed.
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Affiliation(s)
- Zahra Shafaei
- Department of Cell and Molecular Biology' Faculty of Biological Sciences' Kharazmi University, Tehran, Iran
| | - Behafarid Ghalandari
- Applied Biophotonics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Akbar Vaseghi
- Department of Biotechnology, Faculty of Advanced Science and Technologies of Isfahan, Isfahan, Iran
| | - Adeleh Divsalar
- Department of Cell and Molecular Biology' Faculty of Biological Sciences' Kharazmi University, Tehran, Iran.
| | - Thomas Haertlé
- FIP, BIA UR1268, Institut National de la Recherche Agronomique, Nantes, France
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics' University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran
| | - Lindsay Sawyer
- School of Biological Sciences, The University of Edinburgh, Edinburgh, UK
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4
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Sources and Bioactive Properties of Conjugated Dietary Fatty Acids. Lipids 2016; 51:377-97. [PMID: 26968402 DOI: 10.1007/s11745-016-4135-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 02/17/2016] [Indexed: 12/11/2022]
Abstract
The group of conjugated fatty acids known as conjugated linoleic acid (CLA) isomers have been extensively studied with regard to their bioactive potential in treating some of the most prominent human health malignancies. However, CLA isomers are not the only group of potentially bioactive conjugated fatty acids currently undergoing study. In this regard, isomers of conjugated α-linolenic acid, conjugated nonadecadienoic acid and conjugated eicosapentaenoic acid, to name but a few, have undergone experimental assessment. These studies have indicated many of these conjugated fatty acid isomers commonly possess anti-carcinogenic, anti-adipogenic, anti-inflammatory and immune modulating properties, a number of which will be discussed in this review. The mechanisms through which these bioactivities are mediated have not yet been fully elucidated. However, existing evidence indicates that these fatty acids may play a role in modulating the expression of several oncogenes, cell cycle regulators, and genes associated with energy metabolism. Despite such bioactive potential, interest in these conjugated fatty acids has remained low relative to the CLA isomers. This may be partly attributed to the relatively recent emergence of these fatty acids as bioactives, but also due to a lack of awareness regarding sources from which they can be produced. In this review, we will also highlight the common sources of these conjugated fatty acids, including plants, algae, microbes and chemosynthesis.
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Tedesco D, Bertucci C. Induced circular dichroism as a tool to investigate the binding of drugs to carrier proteins: Classic approaches and new trends. J Pharm Biomed Anal 2015; 113:34-42. [PMID: 25769668 DOI: 10.1016/j.jpba.2015.02.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 02/12/2015] [Indexed: 10/24/2022]
Abstract
Induced circular dichroism (ICD) is a spectroscopic phenomenon that provides versatile and useful methods for characterizing the structural and dynamic properties of the binding of drugs to target proteins. The understanding of biorecognition processes at the molecular level is essential to discover and validate new pharmacological targets, and to design and develop new potent and selective drugs. The present article reviews the main applications of ICD to drug binding studies on serum carrier proteins, going from the classic approaches for the derivation of drug binding parameters and the identification of binding sites, to an overview of the emerging trends for the characterization of binding modes by means of quantum chemical (QC) techniques. The advantages and limits of the ICD methods for the determination of binding parameters are critically reviewed; the capability to investigate the binding interactions of drugs and metabolites to their target proteins is also underlined, as well as the possibility of characterizing the binding sites to obtain a complete picture of the binding mechanism and dynamics. The new applications of ICD methods to identify stereoselective binding modes of drug/protein complexes are then reviewed with relevant examples. The combined application of experimental ICD spectroscopy and QC calculations is shown to identify qualitatively the bound conformations of ligands to target proteins even in the absence of a detailed structure of the binding sites, either obtained from experimental X-ray crystallography and NMR measurements or from computational models of the complex.
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Affiliation(s)
- Daniele Tedesco
- Department of Pharmacy and Biotechnology, University of Bologna, via Belmeloro 6, 40126 Bologna, Italy
| | - Carlo Bertucci
- Department of Pharmacy and Biotechnology, University of Bologna, via Belmeloro 6, 40126 Bologna, Italy.
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6
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Chevalley A, Cherrier MV, Fontecilla-Camps JC, Ghasemi M, Salmain M. Artificial metalloenzymes derived from bovine β-lactoglobulin for the asymmetric transfer hydrogenation of an aryl ketone – synthesis, characterization and catalytic activity. Dalton Trans 2014; 43:5482-9. [DOI: 10.1039/c3dt53253d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Protein hybrids resulting from the supramolecular anchoring to bovine β-lactoglobulin of fatty acid-derived Rh(iii) diimine complexes catalysed the asymmetric transfer hydrogenation of trifluoroacetophenone with up to 32% ee.
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Affiliation(s)
- Alice Chevalley
- Chimie ParisTech (Ecole Nationale Supérieure de Chimie de Paris)
- Laboratoire Charles Friedel
- 75231 Paris cedex 05, France
- CNRS
- UMR 7223
| | - Mickael V. Cherrier
- Metalloproteins Unit
- Institut de Biologie Structurale Jean-Pierre Ebel
- UMR 5075
- CEA
- CNRS
| | | | - Mahsa Ghasemi
- Chimie ParisTech (Ecole Nationale Supérieure de Chimie de Paris)
- Laboratoire Charles Friedel
- 75231 Paris cedex 05, France
- CNRS
- UMR 7223
| | - Michèle Salmain
- Chimie ParisTech (Ecole Nationale Supérieure de Chimie de Paris)
- Laboratoire Charles Friedel
- 75231 Paris cedex 05, France
- CNRS
- UMR 7223
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Divsalar A, Saboury AA, Haertlé T, Sawyer L, Mansouri-Torshizi H, Barzegar L. Spectroscopic and Calorimetric Study of 2,2′-Dibipyridin Cu(II) Chloride Binding to Bovine β-Lactoglobulin. J SOLUTION CHEM 2013. [DOI: 10.1007/s10953-013-9987-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Cytotoxic and spectroscopic studies on binding of a new synthesized bipyridine ethyl dithiocarbamate Pt(II) nitrate complex to the milk carrier protein of BLG. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0232-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
We have investigated the interactions betweenβ-lactoglobulin, BLG, and new synthesized Cu(II) complex (2,2′-dibipyridine Cu(II) chloride) using isothermal titration calorimetry (ITC) methods at different temperatures of 298 and 310 K. The heats of BLG + Cu(II) interactions are reported and analyzed in terms of the extended solvation theory for calculation of binding and thermodynamic parameters of the interaction. The results suggested that binding of Cu(II) complex on BLG resulted in significant changes on the tertiary structure and conformation of protein via increasing of hydrophobicity and inducing partially unfolded structure in BLG which has a good agreement with the solvation parameters recovered by the extended solvation model suggesting destabilization of the protein.
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Matei I, Ionescu S, Hillebrand M. Kaempferol-human serum albumin interaction: characterization of the induced chirality upon binding by experimental circular dichroism and TDDFT calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:709-715. [PMID: 22885084 DOI: 10.1016/j.saa.2012.07.043] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/05/2012] [Accepted: 07/10/2012] [Indexed: 06/01/2023]
Abstract
The experimental induced circular dichroism (ICD) and absorption spectra of the achiral flavonoid kaempferol upon binding to human serum albumin (HSA) were correlated to electronic CD and UV-vis spectra theoretically predicted by time-dependent density functional theory (TDDFT). The neutral and four anionic species of kaempferol in various conformations were considered in the calculations. The appearance of the experimental ICD signal was rationalized in terms of kaempferol binding to HSA in a distorted, chiral, rigid conformation. The comparison between the experimental and simulated spectra allowed for the identification of the kaempferol species that binds to HSA, namely the anion generated by deprotonation of the hydroxyl group in position 7. This approach constitutes a convenient method for evidencing the binding species and for determining its conformation in the binding pocket of the protein. Its main advantage over the UV-vis absorption method lays in the fact that only the bound ligand species gives an ICD signal.
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Affiliation(s)
- Iulia Matei
- Department of Physical Chemistry, University of Bucharest, Bd. Regina Elisabeta 4-12, 030018 Bucharest, Romania
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11
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Wang HJ, Cao Y, Cao C, Sun YY, Yu XH, Zhu LF, Yang L. Parinaric acid methyl ester polymer films with hill-structured features: fabrication and different sensitivities to normal and tumor cells. ACS APPLIED MATERIALS & INTERFACES 2011; 3:2755-2763. [PMID: 21682341 DOI: 10.1021/am200544c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Parinaric acid methyl ester (PnA-Me) polymer films with hill-structured features were fabricated by a solvent volatilization in situ cross-linking method. Moreover, nuclear magnetic resonance, Fourier transform infrared, and oxidation kinetic analyses were successfully applied to monitor the formation process of PnA-Me polymer films. The role of PnA-Me monomer concentrations for growth control of the hill structures on a glass matrix had also been investigated. Also, the results demonstrated that size control of the resulting hill structure ranging from 0.56 ± 0.18 to 19.6 ± 3.5 μm could be realized by varying the concentration of the PnA-Me monomer from 0.0117 to 1.5 mg/mL. Additionally, the effects of polymer films with different surface topographical structures on the behaviors of rat mesenchymal stem cells and human pheochromocytoma cells were measured by morphological and metabolic methods. The results revealed that the cell activity of PnA-Me films was topographical structure- and cell-type-dependent. Furthermore, the selective sensitivity of the PnA-Me films to normal and tumor cells supported the potential value as the coatings for the tissue engineering substitutes.
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Affiliation(s)
- Hua-Jie Wang
- College of Chemistry and Environmental Science, Henan Normal University, 46 East of Construction Road, Xinxiang 453007, People's Republic of China.
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12
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Franchini GR, Curto LM, Caramelo JJ, Delfino JM. Dissection of a beta-barrel motif leads to a functional dimer: the case of the intestinal fatty acid binding protein. Protein Sci 2010; 18:2592-602. [PMID: 19844951 DOI: 10.1002/pro.273] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A lingering issue in the area of protein engineering is the optimal design of beta motifs. In this regard, the framework provided by intestinal fatty acid binding protein (IFABP) was successfully chosen to explore the consequences on structure and function of the redesign of natural motifs. A truncated form of IFABP (Delta 98 Delta) served to illustrate the nonintuitive notion that the integrity of the beta-barrel can indeed be compromised with no effect on the ability to attain a native-like fold. This is most likely the outcome of the key role played by the preservation of essential core residues. In the search for the minimal structural determinants of this fold, Delta 98 Delta offered room for further intervention. A dissection of this protein leads to a new abridged variant, Delta 78 Delta, containing 60% of the amino acids of IFABP. Spectroscopic analyses indicate that Delta 78 Delta retains substantial beta-sheet content and preserves tertiary interactions, displaying cooperative unfolding and binding activity. Most strikingly, this construct adopts a remarkably stable dimeric structure in solution. This phenomenon takes advantage of the inherent structural plasticity of this motif, likely profitting from edge-to-edge interactions between beta-sheets, whereas avoiding the most commonly occurring outcome represented by aggregation.
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Affiliation(s)
- Gisela R Franchini
- Department of Biological Chemistry and Institute of Biochemistry and Biophysics (IQUIFIB), School of Pharmacy and Biochemistry, University of Buenos Aires, C1113AAD, Buenos Aires, Argentina
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Curto LM, Caramelo JJ, Franchini GR, Delfino JM. Delta98Delta, a minimalist model of antiparallel beta-sheet proteins based on intestinal fatty acid binding protein. Protein Sci 2009; 18:735-46. [PMID: 19309727 DOI: 10.1002/pro.71] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The design of beta-barrels has always been a formidable challenge for de novo protein design. For instance, a persistent problem is posed by the intrinsic tendency to associate given by free edges. From the opposite standpoint provided by the redesign of natural motifs, we believe that the intestinal fatty acid binding protein (IFABP) framework allows room for intervention, giving rise to abridged forms from which lessons on beta-barrel architecture and stability could be learned. In this context, Delta98Delta (encompassing residues 29-126 of IFABP) emerges as a monomeric variant that folds properly, retaining functional activity, despite lacking extensive stretches involved in the closure of the beta-barrel. Spectroscopic probes (fluorescence and circular dichroism) support the existence of a form preserving the essential determinants of the parent structure, albeit endowed with enhanced flexibility. Chemical and physical perturbants reveal cooperative unfolding transitions, with evidence of significant population of intermediate species in equilibrium, structurally akin to those transiently observed in IFABP. The recognition by the natural ligand oleic acid exerts a mild stabilizing effect, being of a greater magnitude than that found for IFABP. In summary, Delta98Delta adopts a monomeric state with a compact core and a loose periphery, thus pointing to the nonintuitive notion that the integrity of the beta-barrel can indeed be compromised with no consequence on the ability to attain a native-like and functional fold.
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Affiliation(s)
- Lucrecia María Curto
- Department of Biological Chemistry and Institute of Biochemistry and Biophysics (IQUIFIB), School of Pharmacy and Biochemistry, University of Buenos Aires, C1113AAD Buenos Aires, Argentina
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Divsalar A, Saboury AA, Mansoori-Torshizi H, Moghaddam MI, Ahmad F, Hakimelahi GH. Comparative Studies on the Interaction Between Bovine β-lacto-globulin Type A and B and a New Designed Pd(II) Complex with Anti-tumor Activity at Different Temperatures. J Biomol Struct Dyn 2009; 26:587-597. [DOI: 10.1080/07391102.2009.10507274] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Comparative and Structural Analysis of the Interaction between β-Lactoglobulin type A and B with a New Anticancer Component (2,2'-Bipyridin n-Hexyl Dithiocarbamato Pd(II) Nitrate). B KOREAN CHEM SOC 2006. [DOI: 10.5012/bkcs.2006.27.11.1801] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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