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Deng H, Yang X, Wang H, Gao M, Zhang Y, Liu R, Xu H, Zhang W. Tailoring the surface charges of iron-crosslinked dextran nanogels towards improved tumor-associated macrophage targeting. Carbohydr Polym 2024; 325:121585. [PMID: 38008480 DOI: 10.1016/j.carbpol.2023.121585] [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: 09/09/2023] [Revised: 11/06/2023] [Accepted: 11/10/2023] [Indexed: 11/28/2023]
Abstract
Tumor-associated macrophages (TAMs) have emerged as therapeutic interests in cancer nanomedicine because TAMs play a pivotal role in the immune microenvironment of solid tumors. Dextran and its derived nanocarriers are among the most promising nanomaterials for TAM targeting due to their intrinsic affinities towards macrophages. Various dextran-based nanomaterials have been developed to image TAMs. However, the effects of physiochemical properties especially for surface charges of dextran nanomaterials on TAM-targeting efficacy were ambiguous in literature. To figure out the surface charge effects on TAM targeting, here we developed a facile non-covalent self-assembly strategy to construct oppositely charged dextran nanogels (NGs) utilizing the coordination interaction of ferric ions, chlorine e6 (Ce6) dye and three dextran derivatives, diethylaminoethyl-, sulfate sodium- and carboxymethyl-dextran. The acquired dextran NGs exhibit different charges but similar hydrodynamic size, Ce6 loading and mechanical stiffness, which enables a side-by-side comparison of the effects of NG surface charges on TAM targeting monitored by the Ce6 fluorescence imaging. Compared with negative NGs, the positive NG clearly displays a superior TAM targeting in murine breast cancer model. This study identifies that positively charged dextran NG could be a promising approach to better engineer nanomedicine towards an improved TAM targeting.
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Affiliation(s)
- Hong Deng
- State Key Laboratory of Complex Severe and Rare Diseases, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China; Department of Biomedical Engineering, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China
| | - Xue Yang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, PR China
| | - Huimin Wang
- State Key Laboratory of Complex Severe and Rare Diseases, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China; Department of Biomedical Engineering, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China
| | - Menghan Gao
- State Key Laboratory of Complex Severe and Rare Diseases, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China; Department of Biomedical Engineering, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China
| | - Yiyi Zhang
- State Key Laboratory of Complex Severe and Rare Diseases, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China; Department of Biomedical Engineering, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China
| | - Runmeng Liu
- State Key Laboratory of Complex Severe and Rare Diseases, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China; Department of Biomedical Engineering, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China
| | - Haiyan Xu
- Department of Biomedical Engineering, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China.
| | - Weiqi Zhang
- State Key Laboratory of Complex Severe and Rare Diseases, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China; Department of Biomedical Engineering, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China.
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2
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Grabowska O, Samsonov SA, Chmurzyński L, Wyrzykowski D, Żamojć K. Investigation of hexacyanoferrate(II)/(III) charge-dependent interactions with bovine and human serum albumins. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 293:122505. [PMID: 36809739 DOI: 10.1016/j.saa.2023.122505] [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: 09/21/2022] [Revised: 01/21/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
In the present paper, the binding interactions of highly negative-charged ions, namely hexacyanoferrates(II/III), i.e. [Fe(CN)6]4- and [Fe(CN)6]3- with bovine and human serum albumins (BSA and HSA, respectively) have been studied for the first time in an aqueous solution (10 mM cacodylate buffer of pH 7.0) using steady-state fluorescence spectroscopy, isothermal titration calorimetry, and CD spectroscopy supported by molecular dynamics-based computational approaches. The Stern-Volmer equation as well as its modifications suggested that hexacyanoferrates(II/III) effectively quenched the intrinsic fluorescence of the albumins through a static mechanism. The proteins under study possess only one binding site on the surface capable of binding one mole of hexacyanoferrates(II/III) ions per one mole of albumin (HSA or BSA). The formation of albumin complexes is an enthalpy-driven process (|ΔHITC| > |TΔSITC|). The strength of the interactions depends mainly on the type of albumin, and changes as follows: BSA-K3[Fe(CN)6] ∼ BSA-K4[Fe(CN)6] > HSA-K3[Fe(CN)6] ∼ HSA-K4[Fe(CN)6]. Finally, potential binding sites of bovine and human serum albumins have been investigated and discussed based on a competitive fluorescence displacement assay (with warfarin and ibuprofen as site markers) and molecular dynamics simulations.
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Affiliation(s)
- Ola Grabowska
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Sergey A Samsonov
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Lech Chmurzyński
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Dariusz Wyrzykowski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Krzysztof Żamojć
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
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3
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Nakatomi T, Itaya-Takahashi M, Horikoshi Y, Shimizu N, Parida IS, Jutanom M, Eitsuka T, Tanaka Y, Zingg JM, Matsura T, Nakagawa K. The difference in the cellular uptake of tocopherol and tocotrienol is influenced by their affinities to albumin. Sci Rep 2023; 13:7392. [PMID: 37149706 PMCID: PMC10164177 DOI: 10.1038/s41598-023-34584-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 05/03/2023] [Indexed: 05/08/2023] Open
Abstract
Vitamin E is classified into tocopherol (Toc) and tocotrienol (T3) based on its side chains. T3 generally has higher cellular uptake than Toc, though the responsible mechanism remains unclear. To elucidate this mechanism, we hypothesized and investigated whether serum albumin is a factor that induces such a difference in the cellular uptake of Toc and T3. Adding bovine serum albumin (BSA) to serum-depleted media increased the cellular uptake of T3 and decreased that of Toc, with varying degrees among α-, β-, γ-, and δ-analogs. Such enhanced uptake of α-T3 was not observed when cells were incubated under low temperature (the uptake of α-Toc was also reduced), suggesting that Toc and T3 bind to albumin to form a complex that results in differential cellular uptake of vitamin E. Fluorescence quenching study confirmed that vitamin E certainly bound to BSA, and that T3 showed a higher affinity than Toc. Molecular docking further indicated that the differential binding energy of Toc or T3 to BSA is due to the Van der Waals interactions via their side chain. Overall, these results suggested that the affinity of Toc and T3 to albumin differs due to their side chains, causing the difference in their albumin-mediated cellular uptake. Our results give a better mechanistic insight into the physiological action of vitamin E.
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Affiliation(s)
- Takashi Nakatomi
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Mayuko Itaya-Takahashi
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Yosuke Horikoshi
- Division of Medical Biochemistry, Department of Pathophysiological and Therapeutic Sciences, Tottori University Faculty of Medicine, 86 Nishi-cho, Yonago, 683-8503, Japan
| | - Naoki Shimizu
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Isabella Supardi Parida
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Mirinthorn Jutanom
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Takahiro Eitsuka
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Yoshikazu Tanaka
- Applied Biological Molecular Science, Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Jean-Marc Zingg
- Department of Biochemistry and Molecular Biology, University of Miami, 1011 NW 15th St, Miami, FL, 33136-1019, USA
| | - Tatsuya Matsura
- Division of Medical Biochemistry, Department of Pathophysiological and Therapeutic Sciences, Tottori University Faculty of Medicine, 86 Nishi-cho, Yonago, 683-8503, Japan
- Department of Nutritional Sciences, Faculty of Human Ecology, Yasuda Women's University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima, 731-0153, Japan
| | - Kiyotaka Nakagawa
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8572, Japan.
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4
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Ansari A. Decoding the binding interaction of steroidal pyridines with bovine serum albumin using spectroscopic and molecular docking techniques. Steroids 2023; 192:109156. [PMID: 36539023 DOI: 10.1016/j.steroids.2022.109156] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/09/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
The present study reports a comprehensive and conformational aspect of binding of steroidal pyridines (1-6) with a model transport protein, bovine serum albumin (BSA) by fluorescence, UV-visible, circular dichroism, and molecular docking techniques. Quenching of BSA emission was attributed to the formation of the ground state complex after the compound (1-6) binds to the backbone of the protein. Synchronous fluorescence spectra reveals changes in the microenvironment of the aromatic residues. UV-visible absorption spectra further reiterate the quenching mechanism to be static and binding of compound (1-6) results in the formation of a ground-state complex. Circular dichroism spectra indicated that compound 1-3 causes unfolding and compound 4-6 leads to the stabilization of the protein structure. In addition, a molecular docking study revealed the binding pocket for the formation of the ligand-protein complex through hydrogen bonding and hydrophobic interactions. Furthermore, hemolytic activity suggested that the compounds (1-6) are biocompatible in nature. Evaluation of such steroid-protein interaction helps in better understanding of the biomolecular interaction of steroidal compounds with biomacromolecule and opens up new approaches in steroid based drug-design process.
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Affiliation(s)
- Anam Ansari
- Department of Chemistry, Chandigarh University, Gharuan, Mohali, Punjab 140301, India
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Gao Z, Ji Z, Wang L, Deng Q, Quek SY, Liu L, Dong X. Improvement of Oxidative Stability of Fish Oil-in-Water Emulsions through Partitioning of Sesamol at the Interface. Foods 2023; 12:foods12061287. [PMID: 36981213 PMCID: PMC10048168 DOI: 10.3390/foods12061287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/11/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
The susceptibility of polyunsaturated fatty acids to oxidation severely limits their application in functional emulsified foods. In this study, the effect of sesamol concentration on the physicochemical properties of WPI-stabilized fish oil emulsions was investigated, focusing on the relationship between sesamol-WPI interactions and interfacial behavior. The results relating to particle size, zeta-potential, microstructure, and appearance showed that 0.09% (w/v) sesamol promoted the formation of small oil droplets and inhibited oil droplet aggregation. Furthermore, the addition of sesamol significantly reduced the formation of hydrogen peroxide, generation of secondary reaction products during storage, and degree of protein oxidation in the emulsions. Molecular docking and isothermal titration calorimetry showed that the interaction between sesamol and β-LG was mainly mediated by hydrogen bonds and hydrophobic interactions. Our results show that sesamol binds to interfacial proteins mainly through hydrogen bonding, and increasing the interfacial sesamol content reduces the interfacial tension and improves the physical and oxidative stability of the emulsion.
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Affiliation(s)
- Zhihui Gao
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhongyan Ji
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Leixi Wang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Qianchun Deng
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Siew Young Quek
- School of Chemical Sciences, The University of Auckland, Auckland 1142, New Zealand
- Riddet Institute, Palmerston North 4474, New Zealand
| | - Liang Liu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Xuyan Dong
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
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du X, Xinru W, Yao J, Li H, Bao Y, Lan J, Zhao Z, Zong W. Study on the Interaction between Sulfamerazine and Human serum albumin on Molecular Level using Spectral Analysis. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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7
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Srivastava P, Verma VK, Sabbarwal S, Singh M, Sahoo K, Koch B, Kumar M. White light-emitting, biocompatible, water-soluble metallic magnesium nanoclusters for bioimaging applications. NANOTECHNOLOGY 2022; 34:105702. [PMID: 36537740 DOI: 10.1088/1361-6528/aca545] [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: 06/22/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Ultra-small (1.6 nm), water-soluble, white light-emitting (WLE), highly stable (∼8 months) BSA templated metallic (Mg0) nanoclusters (fluorescent magnesium nanoclusters = FMNCs) is developed using the green and facile route. Synthesis was facilitated by the reduction of magnesium salt, where template bovine serum albumin is utilized as a reducing agent and ascorbic acid act as a capping agent to impart stability in water, thereby obtaining stabilized Mg0nanoclusters In solution, stabilized Mg0nanoclusters produce white light (450-620 nm with FWHM ∼120 nm) upon 366 nm light excitation. This white light emission was found to have a CIE coordinate of 0.30, 0.33 [pure white light CIE (0.33, 0.33)]. Taking advantage of WLE and ultrasmall size, FMNCs were used forin vitrofluorescence imaging of HaCaT cell lines, yielding blue (τ= 2.94 ns, with a relative of QY = 1.2 % w.r.t QS), green (τ= 3.07 ns; relative quantum yield of 4.6% w.r.t R6G) and red (τ= 0.3 ns) images. Further, incubation of FMNCs with HEK293 (Human embryonic kidney cell) and cancerous MDA-MB-231 (Breast cancer cell line) human cell lines yielded 100 % cell viability. Current work is envisioned to contribute significantly in the area of science, engineering, and nanomedicine.
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Affiliation(s)
- Prachi Srivastava
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- School of Biomedical Engineering, IIT (BHU), Varanasi-221005, India
| | - Vivek Kumar Verma
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- School of Biomedical Engineering, IIT (BHU), Varanasi-221005, India
| | - Shivesh Sabbarwal
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
| | - Mamata Singh
- Department of Zoology, Banaras Hindu University, Varanasi-221005, India
| | - Kedar Sahoo
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
| | - Biplob Koch
- Department of Zoology, Banaras Hindu University, Varanasi-221005, India
| | - Manoj Kumar
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
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Kumar Verma V, Srivastava P, Sabbarwal S, Singh M, Koch B, Kumar M. White Light Emitting Gadolinium Oxide Nanoclusters for
In‐vitro
Bio‐imaging. ChemistrySelect 2022. [DOI: 10.1002/slct.202202335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Vivek Kumar Verma
- Nano2Micro Material Design Lab IIT (BHU) Varanasi UP India
- School of Biomedical Engineering IIT (BHU) Varanasi 221005, UP India
| | - Prachi Srivastava
- Nano2Micro Material Design Lab IIT (BHU) Varanasi UP India
- School of Biomedical Engineering IIT (BHU) Varanasi 221005, UP India
| | - Shivesh Sabbarwal
- Nano2Micro Material Design Lab IIT (BHU) Varanasi UP India
- Department of Chemical Engineering & Technology IIT (BHU) Varanasi, 221005, UP India
| | - Mamata Singh
- Department of Zoology Banaras Hindu University Varanasi UP - 221005 India
| | - Biplob Koch
- Department of Zoology Banaras Hindu University Varanasi UP - 221005 India
| | - Manoj Kumar
- Nano2Micro Material Design Lab IIT (BHU) Varanasi UP India
- Department of Chemical Engineering & Technology IIT (BHU) Varanasi, 221005, UP India
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Gamage RS, Smith BD. Spontaneous Transfer of Indocyanine Green from Liposomes to Albumin Is Inhibited by the Antioxidant α-Tocopherol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11950-11961. [PMID: 36126324 PMCID: PMC9897306 DOI: 10.1021/acs.langmuir.2c01715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Indocyanine Green (ICG) is a clinically approved organic dye with near-infrared absorption and fluorescence. Over the years, many efforts to improve the photophysical and pharmacokinetic properties of ICG have investigated numerous nanoparticle formulations, especially liposomes with membrane-embedded ICG. A series of systematic absorption and fluorescence experiments, including FRET experiments using ICG as a fluorescence energy acceptor, found that ICG transfers spontaneously from liposomes to albumin protein residing in the external solution with a half-life of ∼10 min at 37 °C. Moreover, transfer of ICG from liposome membranes to external albumin reduces light-activated leakage from thermosensitive liposomes with membrane-embedded ICG. A survey of lipophilic liposome additives discovered that the presence of clinically approved antioxidant, α-tocopherol, greatly increases ICG retention in the liposomes (presumably by forming favorable aromatic stacking interactions), inhibits ICG photobleaching and prevents albumin-induced reduction of light-triggered liposome leakage. This new insight will help researchers with the specific task of optimizing ICG-containing liposomes for fluorescence imaging or phototherapeutics. More broadly, the results suggest a broader design concept concerning light triggered liposome leakage, that is, proximity of the light absorbing dye to the bilayer membrane is a critical design feature that impacts the extent of liposome leakage.
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El Tokhy SS, Elgizawy SA, Osman MA, Goda AE, Unsworth LD. Tailoring dexamethasone loaded albumin nanoparticles: A full factorial design with enhanced anti-inflammatory activity In vivo. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Cazacu N, Chilom CG, David M, Florescu M. Conformational Changes in the BSA-LT4 Complex Induced by the Presence of Vitamins: Spectroscopic Approach and Molecular Docking. Int J Mol Sci 2022; 23:ijms23084215. [PMID: 35457032 PMCID: PMC9027512 DOI: 10.3390/ijms23084215] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 11/25/2022] Open
Abstract
Levothyroxine (LT4) is known for its use in various conditions including hypothyroidism. LT4 interaction with serum albumin may be influenced by the presence of vitamins. For this reason, we investigated the effect of vitamin C, vitamin B12, and folic acid on the complex of Bovine Serum Albumin with LT4 (BSA-LT4). UV-Vis spectroscopy was used to monitor the influence of vitamins on the BSA-LT4 complex. Fluorescence spectroscopy revealed a static quenching mechanism of the fluorescence of BSA-LT4 complex by the vitamin C and folic acid and a combined mechanism for vitamin B12. The interaction of vitamin C and folic acid with BSA-LT4 was moderate, while the binding of vitamin B12 was much stronger, extending the storage time of LT4 in blood plasma. Synchronous fluorescence found that the vitamins were closer to the vicinity of Trp than to Tyr and the effect was more pronounced for the binding of vitamin B12. The thermal stability of the BSA-LT4 complex was more evident, but no influence on the stability of BSA-LT4 complex was obtained for vitamin C. Molecular docking studies showed that vitamin C and folic acid bound the same site of the protein, while vitamin B12 bonded to a different site.
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Affiliation(s)
- Nicoleta Cazacu
- Department of Electricity, Solid Physics and Biophysics, Faculty of Physics, University of Bucharest, Str. Atomistilor No. 405, CP MG-11, Bucuresti-Magurele, 077125 Magurele, Romania; (N.C.); (C.G.C.)
| | - Claudia G. Chilom
- Department of Electricity, Solid Physics and Biophysics, Faculty of Physics, University of Bucharest, Str. Atomistilor No. 405, CP MG-11, Bucuresti-Magurele, 077125 Magurele, Romania; (N.C.); (C.G.C.)
| | - Melinda David
- Department of Fundamental, Prophylactic and Clinical Disciplines, Faculty of Medicine, Transilvania University of Brasov, Str. Universitatii No. 1, Building C, Room CI30, 500068 Brasov, Romania;
| | - Monica Florescu
- Department of Fundamental, Prophylactic and Clinical Disciplines, Faculty of Medicine, Transilvania University of Brasov, Str. Universitatii No. 1, Building C, Room CI30, 500068 Brasov, Romania;
- Correspondence:
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12
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Wang L, Yu X, Geng F, Cheng C, Yang J, Deng Q. Effects of tocopherols on the stability of flaxseed oil-in-water emulsions stabilized by different emulsifiers: Interfacial partitioning and interaction. Food Chem 2021; 374:131691. [PMID: 34883433 DOI: 10.1016/j.foodchem.2021.131691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/15/2021] [Accepted: 11/25/2021] [Indexed: 11/04/2022]
Abstract
The potential effects of tocopherols (100 μM in emulsions) on the physicochemical stability of whey protein isolate (WPI), soy lecithin (SL), or Tween 20 (TW) stabilized flaxseed oil (FO)-in-water emulsions were investigated. During the storage (18 days at 55 ℃), the particle size, microstructure, and multiple light scattering results showed WPI-stabilized emulsions exhibited better physical stability when tocopherols were added hydroperoxides and TBARS concentration in TW-stabilized emulsions were higher than those of SL or WPI, which were suppressed differently by tocopherols. Among homologues, δ-tocopherol was more effective in inhibiting lipid oxidation than α-tocopherol, which was related to the higher interface partitioning. Moreover, the increased interfacial tension indicated tocopherols, especially δ-tocopherol, were adsorbed on the interface and interacted with WPI or SL via hydrophobic or electrostatic interactions determined by isothermal titration calorimetry. Our results suggest tocopherols are more applicable in WPI emulsion systems to achieve steady-state delivery of ALA.
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Affiliation(s)
- Lei Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Key Laboratory of Lipid Chemistry and Nutrition, and Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Wuhan 430062, Hubei, China
| | - Xiao Yu
- College of Food and Bioengineering, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Henan Collaborative Innovation Center for Food Production and Safety, Zhengzhou University of Light Industry, Zhengzhou 450002, Henan, China
| | - Fang Geng
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), School of Food and Biological Engineering, Chengdu University, Chengdu 610106, Sichuan, China
| | - Chen Cheng
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Key Laboratory of Lipid Chemistry and Nutrition, and Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Wuhan 430062, Hubei, China
| | - Jing Yang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Key Laboratory of Lipid Chemistry and Nutrition, and Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Wuhan 430062, Hubei, China; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Qianchun Deng
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Key Laboratory of Lipid Chemistry and Nutrition, and Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Wuhan 430062, Hubei, China.
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13
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Radioprotective Role of Vitamins C and E against the Gamma Ray-Induced Damage to the Chemical Structure of Bovine Serum Albumin. Antioxidants (Basel) 2021; 10:antiox10121875. [PMID: 34942979 PMCID: PMC8698412 DOI: 10.3390/antiox10121875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/17/2021] [Accepted: 11/19/2021] [Indexed: 12/17/2022] Open
Abstract
Radioprotective effects of vitamin C and vitamin E as a water-soluble and a lipid-soluble agent, respectively, were investigated at the molecular level during the imposition of gamma radiation-induced structural changes to bovine serum albumin (BSA) at the therapeutic dose of 3 Gy. Secondary and tertiary structural changes of control and irradiated BSA samples were investigated using circular dichroism and fluorescence spectroscopy. The preirradiation tests showed nonspecific and reversible binding of vitamins C and E to BSA. Secondary and tertiary structures of irradiated BSA considerably changed in the absence of the vitamins. Upon irradiation, α-helices of BSA transitioned to beta motifs and random coils, and the fluorescence emission intensity decreased relative to nonirradiated BSA. In the presence of the vitamins C or E, however, the irradiated BSA was protected from these structural changes caused by reactive oxygen species (ROS). The two vitamins exhibited different patterns of attachment to the protein surface, as inspected by blind docking, and their mechanisms of protection were different. The hydrophilicity of vitamin C resulted in the predominant scavenging of ROS in the solvent, whereas hydrophobic vitamin E localized on the nonpolar patches of the BSA surface, where it did not only form a barrier for diffusing ROS but also encountered them as an antioxidant and neutralized them thanks to the moderate BSA binding constant. Very low concentrations of vitamins C or E (0.005 mg/mL) appear to be sufficient to prevent the oxidative damage of BSA.
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Sun B, Tan B, Sun N, Huang P, Hong J, Li C, Yang W. Effect of ascorbic acid and citric acid on bioavailability of iron from Tegillarca granosa via an in vitro digestion/Caco-2 cell culture system. Food Funct 2021; 12:11491-11502. [PMID: 34700336 DOI: 10.1039/d1fo01650d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron deficiency anaemia (IDA) has been receiving worldwide attention. Developing safe and effective iron supplements is of great significance for IDA treatment. Tegillarca granosa (T. granosa), a traditional aquaculture bivalve species in China, is considered to be an excellent source of micronutrients, but the distribution and bioavailability of these minerals have yet to be investigated. The present research was conducted to determine the contents and in vitro enzymatic digestibility of minerals in T. granosa, using beef and wheat flour as reference foods. Meanwhile, two iron-binding proteins, hemoglobin and ferritin, were extracted from T. granosa, and their structures, iron accessibility and bioavailability were investigated. Moreover, the effects of ascorbic acid (AA) and citric acid (CA), two commonly applied dietary factors, on these parameters were evaluated. Our results indicated that the mineral levels varied significantly among different food matrices, with T. granosa showing the highest contents of the tested elements. Comparison of iron absorption of meat versus wheat flour and hemoglobin versus ferritin confirmed that heme iron exhibited higher bioavailability than non-heme iron. The addition of the two organic acids notably enhanced the cellular iron uptake of T. granosa-derived proteins. This could be because AA/CA weakened hydrogen bonds within proteins and caused disordered secondary structures, thereby improving their enzymatic digestibility and releasing more soluble iron to be available for absorption. The results of this study provided a basis for the development of T. granosa-derived protein-based iron supplements, promoting the diverse utilization of marine aquatic resources.
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Affiliation(s)
- Bolun Sun
- College of Food and Pharmaceutical Sciences, Ningbo University, 315211, China.
| | - Beibei Tan
- College of Food and Pharmaceutical Sciences, Ningbo University, 315211, China.
| | - Nan Sun
- College of Food and Pharmaceutical Sciences, Ningbo University, 315211, China.
| | - Ping Huang
- College of Food and Pharmaceutical Sciences, Ningbo University, 315211, China.
| | - Jingxia Hong
- College of Food and Pharmaceutical Sciences, Ningbo University, 315211, China.
| | - Chao Li
- College of Food and Pharmaceutical Sciences, Ningbo University, 315211, China. .,Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Wenge Yang
- College of Food and Pharmaceutical Sciences, Ningbo University, 315211, China. .,Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
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Wani TA, Alsaif NA, Alanazi MM, Bakheit AH, Khan AA, Zargar S. Binding of colchicine and ascorbic acid (vitamin C) to bovine serum albumin: An in-vitro interaction study using multispectroscopic, molecular docking and molecular dynamics simulation study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117542] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Ge Q, Yang B, Liu R, Jiang D, Yu H, Wu M, Zhang W. Antioxidant activity of Lactobacillus plantarum NJAU-01 in an animal model of aging. BMC Microbiol 2021; 21:182. [PMID: 34130624 PMCID: PMC8207596 DOI: 10.1186/s12866-021-02248-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 06/03/2021] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Excessive reactive oxygen species (ROS) can cause serious damage to the human body and may cause various chronic diseases. Studies have found that lactic acid bacteria (LAB) have antioxidant and anti-aging effects, and are important resources for the development of microbial antioxidants. This paper was to explore the potential role of an antioxidant strain, Lactobacillus plantarum NJAU-01 screened from traditional dry-cured meat product Jinhua Ham in regulating D-galactose-induced subacute senescence of mice. A total of 48 specific pathogen free Kun Ming mice (SPF KM mice) were randomly allocated into 6 groups: control group with sterile saline injection, aging group with subcutaneously injection of D-galactose, treatments groups with injection of D-galactose and intragastric administration of 107, 108, and 109 CFU/mL L. plantarum NJAU-01, and positive control group with injection of D-galactose and intragastric administration of 1 mg/mL Vitamin C. RESULTS The results showed that the treatment group of L. plantarum NJAU-01 at 109 CFU/mL showed higher total antioxidant capacity (T-AOC) and the antioxidant enzymatic activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) than those of the other groups in serum, heart and liver. In contrast, the content of the oxidative stress marker malondialdehyde (MDA) showed lower levels than the other groups (P < 0.05). The antioxidant capacity was improved with the supplement of the increasing concentration of L. plantarum NJAU-01. CONCLUSIONS Thus, this study demonstrates that L. plantarum NJAU-01 can alleviate oxidative stress by increasing the activities of enzymes involved in oxidation resistance and decreasing level of lipid oxidation in mice.
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Affiliation(s)
- Qingfeng Ge
- School of Food Science and Engineering, Industrial Engineering Center for Huaiyang Cuisine of Jiangsu Province, Yangzhou University, 225127, Yangzhou, Jiangsu, China
- Key Lab of Meat Processing and Quality Control, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Ministry of Education, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China
| | - Bo Yang
- School of Food Science and Engineering, Industrial Engineering Center for Huaiyang Cuisine of Jiangsu Province, Yangzhou University, 225127, Yangzhou, Jiangsu, China
| | - Rui Liu
- School of Food Science and Engineering, Industrial Engineering Center for Huaiyang Cuisine of Jiangsu Province, Yangzhou University, 225127, Yangzhou, Jiangsu, China
- Key Lab of Meat Processing and Quality Control, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Ministry of Education, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China
| | - Donglei Jiang
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Controland Processing, Nanjing University of Finance and Economics, 210023, Nanjing, Jiangsu, China
| | - Hai Yu
- School of Food Science and Engineering, Industrial Engineering Center for Huaiyang Cuisine of Jiangsu Province, Yangzhou University, 225127, Yangzhou, Jiangsu, China
| | - Mangang Wu
- School of Food Science and Engineering, Industrial Engineering Center for Huaiyang Cuisine of Jiangsu Province, Yangzhou University, 225127, Yangzhou, Jiangsu, China
| | - Wangang Zhang
- Key Lab of Meat Processing and Quality Control, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Ministry of Education, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China.
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17
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Dong H, Yin X, Wusigale, Cheng H, Choijilsuren N, Chen X, Liang L. Antioxidant activity and stability of α‐tocopherol, resveratrol and epigallocatechin‐3‐gallate in mixture and complexation with bovine serum albumin. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.14804] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huanhuan Dong
- State Key Lab of Food Science and Technology Jiangnan University Wuxi China
- School of Food Science and Technology Jiangnan University Wuxi China
| | - Xin Yin
- State Key Lab of Food Science and Technology Jiangnan University Wuxi China
- School of Food Science and Technology Jiangnan University Wuxi China
| | - Wusigale
- State Key Lab of Food Science and Technology Jiangnan University Wuxi China
- School of Food Science and Technology Jiangnan University Wuxi China
| | - Hao Cheng
- State Key Lab of Food Science and Technology Jiangnan University Wuxi China
- School of Food Science and Technology Jiangnan University Wuxi China
| | | | - Xing Chen
- State Key Lab of Food Science and Technology Jiangnan University Wuxi China
- School of Food Science and Technology Jiangnan University Wuxi China
| | - Li Liang
- State Key Lab of Food Science and Technology Jiangnan University Wuxi China
- School of Food Science and Technology Jiangnan University Wuxi China
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18
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Two Faces of Vitamin C in Hemodialysis Patients: Relation to Oxidative Stress and Inflammation. Nutrients 2021; 13:nu13030791. [PMID: 33673687 PMCID: PMC7997461 DOI: 10.3390/nu13030791] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/11/2021] [Accepted: 02/24/2021] [Indexed: 02/06/2023] Open
Abstract
Hemodialysis (HD) is the most common method of renal replacement therapy. Besides toxins, it eliminates nutrients from the circulation, such as ascorbic acid (AA). HD-patients present AA deficiency more often than representatives of the general population, also due to dietary restrictions. This condition aggravates oxidative stress and inflammation related to uremia and extracorporeal circulation and increases cardiovascular risk followed by mortality. Supplementation of AA seems to be a promising approach in the treatment of hemodialysis patients. Many successful interventions restored plasma AA concentration in HD patients by enteral or intravenous supplementation, concomitantly inhibiting oxidative stress and inflammation. A significant number of studies reported opposite, serious pro-oxidant effects of AA. In this narrative review, we present studies, commenting on their limitations; on AA plasma or serum concentration and the influence of its supplementation on protein and lipid peroxidation, DNA damage, reactive oxygen species generation, paraoxonase activity, advanced glycation endproducts, and C-reactive protein (CRP) concentration. Moreover, in terms of safety, the possible development of oxalosis in HD patients regarding the intravenous or enteral route of AA administration is discussed. Unequivocal clinical results of recent studies on hemodialysis patients are displayed.
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19
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Guan Y, Greenberg EF, Hasipek M, Chen S, Liu X, Kerr CM, Gackowski D, Zarakowska E, Radivoyevitch T, Gu X, Willard B, Visconte V, Makishima H, Nazha A, Mukherji M, Sekeres MA, Saunthararajah Y, Oliński R, Xu M, Maciejewski JP, Jha BK. Context dependent effects of ascorbic acid treatment in TET2 mutant myeloid neoplasia. Commun Biol 2020; 3:493. [PMID: 32895473 PMCID: PMC7477582 DOI: 10.1038/s42003-020-01220-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 08/10/2020] [Indexed: 12/13/2022] Open
Abstract
Loss-of-function TET2 mutations (TET2MT) are common in myeloid neoplasia. TET2, a DNA dioxygenase, requires 2-oxoglutarate and Fe(II) to oxidize 5-methylcytosine. TET2MT thus result in hypermethylation and transcriptional repression. Ascorbic acid (AA) increases dioxygenase activity by facilitating Fe(III)/Fe(II) redox reaction and may alleviate some biological consequences of TET2MT by restoring dioxygenase activity. Here, we report the utility of AA in the prevention of TET2MT myeloid neoplasia (MN), clarify the mechanistic underpinning of the TET2-AA interactions, and demonstrate that the ability of AA to restore TET2 activity in cells depends on N- and C-terminal lysine acetylation and nature of TET2MT. Consequently, pharmacologic modulation of acetyltransferases and histone deacetylases may regulate TET dioxygenase-dependent AA effects. Thus, our study highlights the contribution of factors that may enhance or attenuate AA effects on TET2 and provides a rationale for novel therapeutic approaches including combinations of AA with class I/II HDAC inhibitor or sirtuin activators in TET2MT leukemia. Using TET2- and ascorbic acid deficient model systems Guan et al show that long term treatment with ascorbic acid delays myeloid neoplasia in mice and reveal a complex interplay of post-translational modification of lysine residues that modulate TET2 activity in neoplastic evolution.
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Affiliation(s)
- Yihong Guan
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Edward F Greenberg
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA.,Leukemia Program, Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Metis Hasipek
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Shi Chen
- Department of Cell System & Anatomy, University of Texas Health at San Antonio, San Antonio, TX, 78229, USA.,Sylvester Comprehensive Cancer Center, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Xiaochen Liu
- Department of Cell System & Anatomy, University of Texas Health at San Antonio, San Antonio, TX, 78229, USA
| | - Cassandra M Kerr
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Daniel Gackowski
- Department of Clinical Biochemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 85-095, Bydgoszcz, Poland
| | - Ewelina Zarakowska
- Department of Clinical Biochemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 85-095, Bydgoszcz, Poland
| | - Tomas Radivoyevitch
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Xiaorong Gu
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Belinda Willard
- Proteomics and Metabolomics Core, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Valeria Visconte
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Hideki Makishima
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA.,Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Aziz Nazha
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA.,Leukemia Program, Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | | | - Mikkael A Sekeres
- Leukemia Program, Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Yogen Saunthararajah
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Ryszard Oliński
- Department of Clinical Biochemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 85-095, Bydgoszcz, Poland
| | - Mingjiang Xu
- Department of Cell System & Anatomy, University of Texas Health at San Antonio, San Antonio, TX, 78229, USA.,Sylvester Comprehensive Cancer Center, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jaroslaw P Maciejewski
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA. .,Leukemia Program, Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA.
| | - Babal K Jha
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA.
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20
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Wong SF, Low KH, Khor SM. Differential-based biosensor array for fluorescence-chemometric discrimination and the quantification of subtle chloropropanols by cross-reactive serum albumin scaffolding. Talanta 2020; 218:121169. [PMID: 32797922 DOI: 10.1016/j.talanta.2020.121169] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/08/2020] [Accepted: 05/13/2020] [Indexed: 12/14/2022]
Abstract
Food contamination is a serious concern because of a high level of chemicals in food causes severe health issues. Safeguarding the public from the risk of adulterated foods has become a challenging mission. Chloropropanols are of importance to food safety and food security because they are common chemical food contaminants and believed to be carcinogenic to humans. In chemical sensing, chloropropanols are challenging analytes owing to the lacking diversity of functional groups and difficulty in targeting the hydroxyl group in aqueous environments. Moreover, because of their small molecular size, the compositions of chloropropanols remain challenging for achieving chromatographic determination. Herein, to simulate human smell and taste sensations, serum albumins, which are protein-based receptors, were introduced as low-selective receptors for differential sensing. Utilizing serum albumins, a fluorophore (PRODAN), and an additive (ascorbic acid), a differential-based optical biosensor array was developed to detect and differentiate chloropropanols. By integrating the sensor array with linear discriminant analysis (LDA), four chloropropanols were effectively differentiated based on their isomerism properties and the number of the hydroxyl groups, even at ultra-low concentration (5 nM). This concentration is far below the maximum tolerable level of 0.18 μM for chloropropanols. The sensing array was then employed for chloropropanols differentiation and quantification in the complex mixtures (e.g., synthetic soy and dark soy sauces). Leave-one-out cross-validation (LOOCV) analysis demonstrated 100% accurate classification for all tests. These results signify our differential sensing array as a practical and powerful tool to speedily identify, differentiate, and even quantify chloropropanols in food matrices.
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Affiliation(s)
- Siew Fang Wong
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kah Hin Low
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Sook Mei Khor
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia; Centre for Innovation in Medical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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21
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Ali SS, Zia MK, Siddiqui T, Ahsan H, Khan FH. Influence of Ascorbic Acid on the Structure and Function of Alpha-2- macroglobulin: Investigations using Spectroscopic and Thermodynamic Techniques. Protein Pept Lett 2020; 27:201-209. [DOI: 10.2174/0929866526666191002113525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 09/06/2019] [Accepted: 09/06/2019] [Indexed: 01/07/2023]
Abstract
Background:
Ascorbic acid is a classic dietary antioxidant which plays an important role
in the body of human beings. It is commonly found in various foods as well as taken as dietary
supplement.
Objective:
The plasma ascorbic acid concentration may range from low, as in chronic or acute
oxidative stress to high if delivered intravenously during cancer treatment. Sheep alpha-2-
macroglobulin (α2M), a human α2M homologue is a large tetrameric glycoprotein of 630 kDa with
antiproteinase activity, found in sheep’s blood.
Methods:
In the present study, the interaction of ascorbic acid with alpha-2-macroglobulin was
explored in the presence of visible light by utilizing various spectroscopic techniques and
isothermal titration calorimetry (ITC).
Results:
UV-vis and fluorescence spectroscopy suggests the formation of a complex between
ascorbic acid and α2M apparent by increased absorbance and decreased fluorescence. Secondary
structural changes in the α2M were investigated by CD and FT-IR spectroscopy. Our findings
suggest the induction of subtle conformational changes in α2M induced by ascorbic acid.
Thermodynamics signatures of ascorbic acid and α2M interaction indicate that the binding is an
enthalpy-driven process.
Conclusion:
It is possible that ascorbic acid binds and compromises antiproteinase activity of α2M
by inducing changes in the secondary structure of the protein.
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Affiliation(s)
- Syed Saqib Ali
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh-202002, India
| | - Mohammad Khalid Zia
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh-202002, India
| | - Tooba Siddiqui
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh-202002, India
| | - Haseeb Ahsan
- Department of Biochemistry, Faculty of Dentistry, Jamia Millia Islamia, New Delhi - 110025, India
| | - Fahim Halim Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh-202002, India
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Effect of adiphenine hydrochloride on the structure of bovine serum albumin: Spectroscopic and docking study. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127168] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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23
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Siddiqui T, Zia MK, Ahsan H, Khan FH. Quercetin-induced inactivation and conformational alterations of alpha-2-macroglobulin: multi-spectroscopic and calorimetric study. J Biomol Struct Dyn 2019; 38:4107-4118. [PMID: 31543004 DOI: 10.1080/07391102.2019.1671232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Quercetin is a widely used bioflavonoid found in onions, grapes, berries and citrus fruits. Under certain conditions, quercetin acts as a pro-oxidant thereby generating reactive oxygen species and promoting the oxidation of molecules. Our study investigates the effect of quercetin on the structure and function of alpha-2-macroglobulin (α2M) by employing various biophysical techniques and trypsin inhibitory assay. α2M is the major antiproteinase present in the plasma of vertebrates. Results of activity assay indicated that α2M loses its 56% of inhibitory activity on treatment with quercetin in the presence of light. UV spectroscopy reveals hyper chromaticity in absorption spectra of protein on interaction with quercetin suggesting structural change. The intrinsic fluorescence studies showed quenching of α2M spectra in the presence of quercetin, and the mode of quenching was found to be static in nature. Synchronous fluorescence indicated the alteration in the microenvironment of tryptophan residues. CD and FTIR spectroscopy confirms concentration-dependent alterations in secondary structure of α2M instigated by quercetin. The magnitude of binding constant, enthalpy change, entropy change and free energy change during the interaction process was determined by isothermal titration calorimetry. Hydrogen bonding and hydrophobic interaction were the main intermolecular forces involved during the process. This study identifies and signifies the damage induced by quercetin to α2M due to its pro-oxidant action. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Tooba Siddiqui
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Mohammad Khalid Zia
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Haseeb Ahsan
- Department of Biochemistry, Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India
| | - Fahim Halim Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
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Patel BK, Sepay N, Mahapatra A. Curious Results in the Prospective Binding Interactions of the Food Additive Tartrazine with β-Lactoglobulin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:11579-11589. [PMID: 31385703 DOI: 10.1021/acs.langmuir.9b01242] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The detailed characterizations of the binding interactions between food additive tartrazine (TZ) and β-lactoglobulin (β-LG) have been investigated through spectroscopic techniques combined with a molecular modeling study. A series of analyses, such as hyperchromic change in the UV-visible spectra, temperature-dependent quenching constant, time-resolved fluorescence, and Rayleigh scattering measurements, show that quenching of β-LG proceeds by a static quenching mechanism. TZ specifically binds with β-LG in a stoichiometry ratio of 1:1, and the observed binding constants (104, K) are 7.64, 9.13, 9.72, and 10.79 at 293, 298, 303, and 308 K, respectively. However, the curious results of binding constants (K) with temperature, encountered in the static quenching, have been well explained on the basis of Le Chatelier's principle. Thermodynamic data and pH-dependent studies along with the surface hydrophobicity binding displacement assay reveal that the durable mode of binding is chiefly entropy-driven, revealing noteworthy interactions of such ionic molecules with the hydrophobic part of β-LG. The modulation of protein conformation has been investigated through steady-state absorption spectroscopy, synchronous emission spectroscopy, circular dichroism, and dynamic light scattering studies. TZ acts as a potential inhibitor in fibrillogenesis. Furthermore, the molecular docking study offers accurate insights about the binding of TZ with β-LG, in consistence with the experimental results. This study would be helpful in pharmaceutical, food, and industrial engineering chemistry research.
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Affiliation(s)
- Biman Kumar Patel
- Department of Chemistry , Jadavpur University , Kolkata 700 032 , India
| | - Nayim Sepay
- Department of Chemistry , Jadavpur University , Kolkata 700 032 , India
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Inactivation of Alpha-2-Macroglobulin by Photo-Illuminated Gallic Acid. J Fluoresc 2019; 29:969-979. [DOI: 10.1007/s10895-019-02410-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/02/2019] [Indexed: 12/29/2022]
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Zia MK, Siddiqui T, Ali SS, Ahsan H, Khan FH. Deciphering the binding of dutasteride with human alpha-2-macroglobulin: Molecular docking and calorimetric approach. Int J Biol Macromol 2019; 133:1081-1089. [DOI: 10.1016/j.ijbiomac.2019.04.180] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/26/2019] [Accepted: 04/26/2019] [Indexed: 10/26/2022]
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Chemometric studies of thymol binding with bovine serum albumin: A developing strategy for the successful investigation of pharmacological activity. Bioelectrochemistry 2018; 124:172-184. [DOI: 10.1016/j.bioelechem.2018.07.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 07/21/2018] [Accepted: 07/24/2018] [Indexed: 12/27/2022]
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28
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Quantification and visualization of α-tocopherol in oil-in-water emulsion based delivery systems by Raman microspectroscopy. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.05.017] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Wang Y, Li N, Liu Z, Huang M, Li H. Bovine serum albumin-dependent photoelectrocatalytic oxidation of ascorbate on a cadmium sulfide/titanium dioxide electrode. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.02.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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30
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Shi JH, Zhou KL, Lou YY, Pan DQ. Multi-spectroscopic and molecular modeling approaches to elucidate the binding interaction between bovine serum albumin and darunavir, a HIV protease inhibitor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:362-371. [PMID: 28753530 DOI: 10.1016/j.saa.2017.07.040] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/13/2017] [Accepted: 07/20/2017] [Indexed: 06/07/2023]
Abstract
Darunavir (DRV), a second-generation HIV protease inhibitor, is widely used across the world as an important component of HIV therapy. The interaction of DRV with bovine serum albumin (BSA), a major carrier protein, has been studied under simulated physiological conditions (pH7.4) by multi-spectroscopic techniques in combination with molecular modeling. Fluorescence data revealed that the intrinsic fluorescence of BSA was quenched by DRV in terms of a static quenching procedure due to the formation of the DRV-BSA complex. The results indicated the presence of single weak affinity binding site (~103M-1, 310K) on protein. The thermodynamic parameters, namely enthalpy change (ΔH0), entropy change (ΔS0) and Gibbs free energy change (ΔG0) were calculated, which signified that the binding reaction was spontaneous, the main binding forces were hydrogen bonding and van der Waals forces. Importantly, competitive binding experiments with three site probes, phenylbutazone (in sub-domain IIA, site I), ibuprofen (in sub-domain IIIA, site II) and artemether (in the interface between sub-domain IIA and IIB, site II'), suggested that DRV was preferentially bound to the hydrophobic cavity in site II' of BSA, and this finding was validated by the docking results. Additionally, synchronous fluorescence, three-dimensional fluorescence and Resonance Rayleigh Scattering (RRS) spectroscopy gave qualitative information on the conformational changes of BSA upon adding DRV, while quantitative data were obtained with Fourier transform infrared spectroscopy (FT-IR).
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Affiliation(s)
- Jie-Hua Shi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Kai-Li Zhou
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yan-Yue Lou
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Dong-Qi Pan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
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31
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Abbasi S, Gharaghani S, Benvidi A, Rezaeinasab M. Novel insights into the effect of folate–albumin binding on the transport of ascorbic acid as an anticancer agent: chemometric analysis based on combined spectroscopic and electrochemical studies. NEW J CHEM 2018. [DOI: 10.1039/c8nj01572d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrochemical behavior of ascorbic acid and folic acid upon their interaction with albumin is investigated using electrochemical, chemometric and docking studies.
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Affiliation(s)
- Saleheh Abbasi
- Department of Chemistry
- Faculty of Science
- Yazd University
- Yazd 89195-741
- Iran
| | - Sajjad Gharaghani
- Laboratory of Bioinformatics and Drug Design
- Institute of Biochemistry and Biophysics
- University of Tehran
- Tehran
- Iran
| | - Ali Benvidi
- Department of Chemistry
- Faculty of Science
- Yazd University
- Yazd 89195-741
- Iran
| | - Masoud Rezaeinasab
- Department of Chemistry
- Faculty of Science
- Yazd University
- Yazd 89195-741
- Iran
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32
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Experimental and theoretical investigation of interaction between bovine serum albumin and the mixture of caffeic acid and salicylic acid as the antioxidants. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.184] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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33
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Patel BK, Dasmandal S, Mahapatra A. Unraveling the binding of phenolphthalein with serum protein and releasing by β-cyclodextrin. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Yasmeen S, Riyazuddeen, Qais FA. Unraveling the thermodynamics, binding mechanism and conformational changes of HSA with chromolyn sodium: Multispecroscopy, isothermal titration calorimetry and molecular docking studies. Int J Biol Macromol 2017; 105:92-102. [PMID: 28690169 DOI: 10.1016/j.ijbiomac.2017.06.122] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 06/28/2017] [Accepted: 06/30/2017] [Indexed: 12/26/2022]
Abstract
Cromolyn sodium is an anti-allergic drug effective for treatment in asthma and allergic rhinitis. In this project, interaction of chromolyn sodium (CS) with human serum albumin (HSA) has been investigated by various techniques such as UV-vis, fluorescence, circular dichorism (CD), fourier transform infrared (FT-IR) spectroscopy, isothermal titration calorimetric (ITC) and molecular docking. The fluorescence quenching results revealed that there was static quenching mechanism in the interactions of CS with HSA. The binding constant (Kb), enthalpy change (ΔH°), entropy change (ΔS°) and Gibbs free energy change (ΔG°) were calculated. The negative values of TΔS° and ΔH° obtained from fluorescence spectroscopy and isothermal titration calorimetry, indicate that hydrogen bonding and van der Waal's forces played major role in the binding process and the reaction is exothermic in nature. The binding constant (Kb) was found to be in the order of 104M-1 which depicts a good binding affinity of CS towards HSA. The conformational changes in the HSA due to interaction of CS were investigated from CD and FT-IR spectroscopy. The binding site of CS in HSA was sub-domain IIA as evident from site probing experiment and molecular docking studies.
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Affiliation(s)
- Shama Yasmeen
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Riyazuddeen
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India.
| | - Faizan Abul Qais
- Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
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35
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An ester-functionalized cationic gemini surfactant mediated structural transitions of porcine serum albumin (PSA) via binding interaction. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.12.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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36
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Banipal TS, Kaur A, Banipal PK. Physicochemical aspects of the energetics of binding of sulphanilic acid with bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 170:214-225. [PMID: 27450119 DOI: 10.1016/j.saa.2016.07.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 06/10/2016] [Accepted: 07/10/2016] [Indexed: 06/06/2023]
Abstract
The thermodynamic study of the binding of sulphanilic acid with model transport protein bovine serum albumin is a promising approach in the area of synthesizing new sulfa drugs with improved therapeutic effect. Thus, such binding studies play an important role in the rational drug design process. The binding between sulphanilic acid and bovine serum albumin has been studied using calorimetry, light scattering in combination with spectroscopic and microscopic techniques. The calorimetric data reveals the presence of two sequential nature of binding sites where the first binding site has stronger affinity (~10(4)M(-1)) and second binding site has weaker affinity (~10(3)M(-1)). However, the spectroscopic (absorption and fluorescence) results suggest the presence of single low affinity binding site (~10(3)M(-1)) on protein. The contribution of polar and non-polar interactions to the binding process has been explored in the presence of various additives. It is found that sulphanilic acid binds with high affinity at Sudlow site II and with low affinity at Sudlow site I of protein. Light scattering and circular dichroism measurements have been used to study the effect on the molecular topology and conformation of protein, respectively. Thus these studies provide important insights into the binding of sulphanilic acid with bovine serum albumin both quantitatively and qualitatively.
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Affiliation(s)
- Tarlok S Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
| | - Amandeep Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Parampaul K Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
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37
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Solomonov AV, Shipitsyna MK, Vashurin AS, Rumyantsev EV, Timin AS, Ivanov SP. Analysis of binding ability of two tetramethylpyridylporphyrins to albumin and its complex with bilirubin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 168:12-20. [PMID: 27267279 DOI: 10.1016/j.saa.2016.05.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 05/27/2016] [Accepted: 05/28/2016] [Indexed: 06/06/2023]
Abstract
An interaction between 5,10,15,20-tetrakis-(N-methyl-x-pyridyl)porphyrins, x=2; 4 (TMPyPs) with bovine serum albumin (BSA) and its bilirubin (BR) complex was investigated by UV-Viz and fluorescence spectroscopy under imitated physiological conditions involving molecular docking studies. The parameters of forming intermolecular complexes (binding constants, quenching rate constants, quenching sphere radius etc.) were determined. It was showed that the interaction between proteins and TMPyPs occurs via static quenching of protein fluorescence and has predominantly hydrophobic and electrostatic character. It was revealed that obtained complexes are relatively stable, but in the case of TMPyP4 binding with proteins occurs better than TMPyP2. Nevertheless, both TMPyPs have better binding ability with free protein compared to BRBSA at the same time. The influence of TMPyPs on the conformational changes in protein molecules was studied using synchronous fluorescence spectroscopy. It was found that there is no competition of BR with TMPyPs for binging sites on protein molecule and BR displacement does not occur. Molecular docking calculations have showed that TMPyPs can bind with albumin via tryptophan residue in the hydrophilic binding site of protein molecule but it is not one possible interaction way.
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Affiliation(s)
- Alexey V Solomonov
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation; Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, Israel.
| | - Maria K Shipitsyna
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation.
| | - Arthur S Vashurin
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation.
| | - Evgeniy V Rumyantsev
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation.
| | - Alexander S Timin
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation; Tomsk Polytechnic University, RASA Center in Tomsk, 30, Lenin Avenue, 634500 Tomsk, Russian Federation.
| | - Sergey P Ivanov
- Ufa Institute of Chemistry of the Russian Academy of Sciences, Prosp. Oktyabrya 71, Ufa 450045, Russian Federation.
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38
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Zhang C, Zhang G, Pan J, Gong D. Galangin competitively inhibits xanthine oxidase by a ping-pong mechanism. Food Res Int 2016; 89:152-160. [DOI: 10.1016/j.foodres.2016.07.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 07/15/2016] [Accepted: 07/24/2016] [Indexed: 10/21/2022]
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39
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Arumugam SS, Subramanian N, Malaichamy I. New insights into the dimerization and site-specific cooperative interaction of Azure B with model transport proteins by spectroscopic and computational studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 164:212-225. [DOI: 10.1016/j.jphotobiol.2016.09.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 09/05/2016] [Accepted: 09/08/2016] [Indexed: 12/16/2022]
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40
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Comprehensive study on the structure of the BSA from extended-to aged form in wide (2–12) pH range. Int J Biol Macromol 2016; 88:51-8. [DOI: 10.1016/j.ijbiomac.2016.03.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 03/14/2016] [Accepted: 03/15/2016] [Indexed: 01/20/2023]
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41
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Probing the binding mechanisms of α-tocopherol to trypsin and pepsin using isothermal titration calorimetry, spectroscopic, and molecular modeling methods. J Biol Phys 2016; 42:415-34. [PMID: 27094449 DOI: 10.1007/s10867-016-9415-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Accepted: 03/09/2016] [Indexed: 10/21/2022] Open
Abstract
α-Tocopherol is a required nutrient for a variety of biological functions. In this study, the binding of α-tocopherol to trypsin and pepsin was investigated using isothermal titration calorimetry (ITC), steady-state and time-resolved fluorescence measurements, circular dichroism (CD) spectroscopy, and molecular modeling methods. Thermodynamic investigations reveal that α-tocopherol binds to trypsin/pepsin is synergistically driven by enthalpy and entropy. The fluorescence experimental results indicate that α-tocopherol can quench the fluorescence of trypsin/pepsin through a static quenching mechanism. The binding ability of α-tocopherol with trypsin/pepsin is in the intermediate range, and one molecule of α-tocopherol combines with one molecule of trypsin/pepsin. As shown by circular dichroism (CD) spectroscopy, α-tocopherol may induce conformational changes of trypsin/pepsin. Molecular modeling displays the specific binding site and gives information about binding forces and α-tocopherol-tryptophan (Trp)/tyrosine (Tyr) distances. In addition, the inhibition rate of α-tocopherol on trypsin and pepsin was studied. The study provides a basic data set for clarifying the binding mechanisms of α-tocopherol with trypsin and pepsin and is helpful for understanding its biological activity in vivo.
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42
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Yue Y, Dong Q, Zhang Y, Li X, Yan X, Sun Y, Liu J. Synthesis of imidazole derivatives and the spectral characterization of the binding properties towards human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 153:688-703. [PMID: 26474241 DOI: 10.1016/j.saa.2015.09.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 08/10/2015] [Accepted: 09/26/2015] [Indexed: 06/05/2023]
Abstract
Small molecular drugs that can combine with target proteins specifically, and then block relative signal pathway, finally obtain the purpose of treatment. For this reason, the synthesis of novel imidazole derivatives was described and this study explored the details of imidazole derivatives binding to human serum albumin (HSA). The data of steady-state and time-resolved fluorescence showed that the conjugation of imidazole derivatives with HSA yielded quenching by a static mechanism. Meanwhile, the number of binding sites, the binding constants, and the thermodynamic parameters were also measured; the raw data indicated that imidazole derivatives could spontaneously bind with HSA through hydrophobic interactions and hydrogen bonds which agreed well with the results from the molecular modeling study. Competitive binding experiments confirmed the location of binding. Furthermore, alteration of the secondary structure of HSA in the presence of the imidazole derivatives was tested.
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Affiliation(s)
- Yuanyuan Yue
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China.
| | - Qiao Dong
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Yajie Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Xiaoge Li
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Xuyang Yan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Yahui Sun
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Jianming Liu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China
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43
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Callies O, Hernández Daranas A. Application of isothermal titration calorimetry as a tool to study natural product interactions. Nat Prod Rep 2016; 33:881-904. [DOI: 10.1039/c5np00094g] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The study of molecular interactions of natural products by isothermal titration calorimetry (ITC) is a potent tool to get new insights of the underpinning driving forces.
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Affiliation(s)
- O. Callies
- Institute of Bioorganic Chemistry “Antonio González”
- Center for Biomedical Research of the Canary Islands
- University of La Laguna
- 38206 La Laguna
- Spain
| | - A. Hernández Daranas
- Institute of Bioorganic Chemistry “Antonio González”
- Center for Biomedical Research of the Canary Islands
- University of La Laguna
- 38206 La Laguna
- Spain
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44
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Lin S, Zhang G, Liao Y, Gong D. The inhibitory kinetics and mechanism of dietary vitamins D3and B2on xanthine oxidase. Food Funct 2016; 7:2849-61. [DOI: 10.1039/c6fo00491a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dietary guidelines to promote health are usually based on the patterns’ prediction on disease risk of foods and nutrients.
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Affiliation(s)
- Suyun Lin
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Yijing Liao
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Deming Gong
- School of Biological Sciences
- The University of Auckland
- Auckland 1142
- New Zealand
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45
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Banipal TS, Kaur A, Khan IA, Banipal PK. Exploring the thermodynamics and conformational aspects of nicotinic acid binding with bovine serum albumin: a detailed calorimetric, spectroscopic and molecular docking study. RSC Adv 2016. [DOI: 10.1039/c5ra28028a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
An attempt to obtain a physicochemical and conformational outlook on the binding interaction of vitamin B3 (NA) with a model transport protein BSA using calorimetry, light scattering, molecular docking, and spectroscopic techniques.
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Affiliation(s)
| | - Amandeep Kaur
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar – 143005
- India
| | - Imran Ahmd Khan
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar – 143005
- India
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46
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Lin S, Zhang G, Pan J, Gong D. Deciphering the inhibitory mechanism of genistein on xanthine oxidase in vitro. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 153:463-72. [DOI: 10.1016/j.jphotobiol.2015.10.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/19/2015] [Accepted: 10/27/2015] [Indexed: 10/22/2022]
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47
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Lin S, Zhang G, Liao Y, Pan J, Gong D. Dietary Flavonoids as Xanthine Oxidase Inhibitors: Structure-Affinity and Structure-Activity Relationships. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:7784-7794. [PMID: 26285120 DOI: 10.1021/acs.jafc.5b03386] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The flavonoid family has been reported to possess a high potential for inhibition of xanthine oxidase (XO). This study concerned the structural aspects of inhibitory activities and binding affinities of flavonoids as XO inhibitors. The result indicated that the hydrophobic interaction was important in the binding of flavonoids to XO, and the XO inhibitory ability increased generally with increasing affinities within the class of flavones and flavonols. The planar structure and the C2═C3 double bonds of flavonoids were advantageous for binding to XO and for XO inhibition. Both the hydroxylation on ring B and the substitution at C3 were unfavorable for XO inhibition more profoundly than their XO affinity. The methylation greatly reduced the inhibition (0.75-3.07 times) but hardly affected the affinity. The bulky sugar substitutions of flavonoids decreased the inhibition (1.69-1.99 times) and lowered the affinities (4.20-9.22 times) to different degrees depending on the conjunction site.
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Affiliation(s)
- Suyun Lin
- State Key Laboratory of Food Science and Technology, Nanchang University , 235 Nanjing East Road, Nanchang 330047, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University , 235 Nanjing East Road, Nanchang 330047, China
| | - Yijing Liao
- State Key Laboratory of Food Science and Technology, Nanchang University , 235 Nanjing East Road, Nanchang 330047, China
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology, Nanchang University , 235 Nanjing East Road, Nanchang 330047, China
| | - Deming Gong
- School of Biological Sciences, The University of Auckland , Auckland 1142, New Zealand
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48
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Peng X, Wang X, Qi W, Huang R, Su R, He Z. Deciphering the binding patterns and conformation changes upon the bovine serum albumin-rosmarinic acid complex. Food Funct 2015; 6:2712-26. [PMID: 26146359 DOI: 10.1039/c5fo00597c] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Rosmarinic acid (RA) is an importantly and naturally occurring polyphenol from plants of the mint family with potent biological activities. Here, the in vitro interaction of RA with bovine serum albumin (BSA) has been investigated using various biophysical approaches as well as molecular modeling methods, to ascertain its binding mechanism and conformational changes. The fluorescence results demonstrated that the fluorescence quenching of BSA by RA was mainly the result of the formation of a ground state BSA-RA complex, and BSA had one high affinity RA binding site with a binding constant of 4.18 × 10(4) mol L(-1) at 298 K. Analysis of thermodynamic parameters revealed that hydrophobic and hydrogen bond interactions were the dominant intermolecular force in the complex formation. The primary binding site of RA in BSA (site I) had been identified by site marker competitive experiments. The distance between RA and the tryptophan residue of BSA was evaluated at 3.12 nm based on Förster's theory of non-radiation energy transfer. The UV-vis absorption, synchronous fluorescence, three-dimensional fluorescence, 8-anilino-1-naphthalenesulfonic acid (ANS) fluorescence, circular dichroism (CD), and Fourier transform infrared (FT-IR) spectra confirmed that the conformation and structure of BSA were altered in the presence of RA. Moreover, the nuclear magnetic spectroscopy showed that the aromatic groups of RA took part in the binding reaction during the BSA-RA complexation. In addition, the molecular picture of the interaction mechanism between BSA and RA at the atomic level was well examined by molecular docking and dynamics studies. In brief, RA can bind to BSA with noncovalent bonds in a relatively stable way, and these findings will be beneficial to the functional food research of RA.
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Affiliation(s)
- Xin Peng
- School of Life Sciences, Tianjin University, Tianjin 300072, PR China
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49
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Mode of encapsulation of Linezolid by β-Cyclodextrin and its role in bovine serum albumin binding. Carbohydr Polym 2015; 115:589-97. [DOI: 10.1016/j.carbpol.2014.09.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 09/11/2014] [Accepted: 09/12/2014] [Indexed: 11/24/2022]
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50
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Li X, Yang Z. Dissection of the binding ofl-ascorbic acid to trypsin and pepsin using isothermal titration calorimetry, equilibrium microdialysis and spectrofluorimetry. RSC Adv 2015. [DOI: 10.1039/c5ra02592c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Clear and quantitative information on the nature ofl-ascorbic acid interaction with trypsin/pepsin should provide a firm base for its rational use in clinical practice.
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Affiliation(s)
- Xiangrong Li
- Department of Chemistry
- School of Basic Medicine
- Xinxiang Medical University
- Xinxiang
- P. R. China
| | - Zhijun Yang
- Department of Chemistry
- School of Basic Medicine
- Xinxiang Medical University
- Xinxiang
- P. R. China
| |
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