1
|
Wang L, Ma R, Tian Y. Quercetin slow-release system delays starch digestion via inhibiting transporters and enzymes. Food Chem 2024; 461:140855. [PMID: 39167947 DOI: 10.1016/j.foodchem.2024.140855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 07/31/2024] [Accepted: 08/11/2024] [Indexed: 08/23/2024]
Abstract
This study investigates the potential of a quercetin-based emulsion system to moderate starch digestion and manage blood glucose levels, addressing the lack of in vivo research. By enhancing quercetin bioaccessibility and targeting release in the small intestine, the emulsion system demonstrates significant inhibition of starch digestion and glucose spikes through both in vitro and in vivo experiments. The system inhibits α-amylase and α-glucosidase via competitive and mixed inhibition mechanisms, primarily involving hydrogen bonds and van der Waals forces, leading to static fluorescence quenching. Additionally, this system downregulates the protein expression and gene transcription of SGLT1 and GLUT2. These findings offer a novel approach to sustaining glucose equilibrium, providing a valuable foundation for further application of quercetin emulsion in food science.
Collapse
Affiliation(s)
- Liping Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Rongrong Ma
- State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China.
| | - Yaoqi Tian
- State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China; Analysis and Testing Center, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| |
Collapse
|
2
|
Lv X, Li W, Zhang M, Wang R, Chang J. Investigation of steric hindrance effect on the interactions between four alkaloids and HSA by isothermal titration calorimetry and molecular docking. J Mol Recognit 2024; 37:e3075. [PMID: 38191989 DOI: 10.1002/jmr.3075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 11/24/2023] [Accepted: 12/24/2023] [Indexed: 01/10/2024]
Abstract
The binding of four alkaloids with human serum albumin (HSA) was investigated by isothermal titration calorimetry (ITC), spectroscopy and molecular docking techniques. The findings demonstrated that theophylline or caffeine can bind to HAS, respectively. The number of binding sites and binding constants are obtained. The binding mode is a static quenching process. The effects of steric hindrance, temperature, salt concentration and buffer solution on the binding indicated that theophylline and HSA have higher binding affinity than caffeine. The fluorescence and ITC results showed that the interaction between HSA and theophylline or caffeine is an entropy-driven spontaneous exothermic process. The hydrophobic force was the primary driving factor. The experimental results were consistent with the molecular docking data. Based on the molecular structures of the four alkaloids, steric hindrance might be a major factor in the binding between HSA and these four alkaloids. This study elucidates the mechanism of interactions between four alkaloids and HSA.
Collapse
Affiliation(s)
- Xinluan Lv
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, China
- Pingyuan Laboratory (Zhengzhou University), Zhengzho, China
| | - Wenjin Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, China
- Pingyuan Laboratory (Zhengzhou University), Zhengzho, China
| | - Miao Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, China
- Pingyuan Laboratory (Zhengzhou University), Zhengzho, China
| | - Ruiyong Wang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, China
- Pingyuan Laboratory (Zhengzhou University), Zhengzho, China
| | - Junbiao Chang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, China
- Pingyuan Laboratory (Zhengzhou University), Zhengzho, China
| |
Collapse
|
3
|
Orlova AV, Shmychkov NV, Vlasova KY, Iakimova TM, Lepnev LS, Eliseev AA, Utochnikova VV. Ytterbium 10-carboxyperylene-3,4,9-tricarboxylates for targeted NIR luminescent bioimaging. Dalton Trans 2024; 53:3980-3984. [PMID: 38349065 DOI: 10.1039/d3dt04298g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Two new ytterbium coordination compounds Yb(HPTC)(H2O)2 (Yb1) and Yb(HPTC)(Phen) (Yb2) were obtained using 10-carboxyperylene-3,4,9-tricarboxylate ion (HPTC3-) as a sensitizer. Both coordination compounds exhibited intense NIR-II luminescence upon excitation in the visible range and formed stable suspensions with nanoparticles of 50-70 nm in size in an aqueous solution of sodium alginate. Both complexes demonstrated non-toxicity up to at least 25 mg L-1 in two cell cultures: cancer cells MCF7 and embryonic cells HEK293T - making them suitable for bioimaging. For both complexes, the accumulation in cells was directly measured and it was shown that the accumulation of Yb2 was the same for both cell types (0.51-0.52 πg per cell), while Yb1 demonstrated selective accumulation in cancer cells (0.04 πg per cell for HEK293T and 7.00 πg per cell for MCF7). Thus, Yb1 can also be proposed as a selective vis-excited NIR emitting bioprobe.
Collapse
Affiliation(s)
- Anastasia V Orlova
- M.V. Lomonosov Moscow State University, 1/3 Leninskie Gory, Moscow, 119991, Russia.
| | - Nazar V Shmychkov
- M.V. Lomonosov Moscow State University, 1/3 Leninskie Gory, Moscow, 119991, Russia.
| | - Kseniia Yu Vlasova
- M.V. Lomonosov Moscow State University, 1/3 Leninskie Gory, Moscow, 119991, Russia.
| | - Tamara M Iakimova
- M.V. Lomonosov Moscow State University, 1/3 Leninskie Gory, Moscow, 119991, Russia.
| | - Leonid S Lepnev
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, Leninsky Prosp. 53, Moscow, 119992, Russia
| | - Andrei A Eliseev
- M.V. Lomonosov Moscow State University, 1/3 Leninskie Gory, Moscow, 119991, Russia.
| | | |
Collapse
|
4
|
Al-Asbahy WM, Shamsi M, Senan A, Al-Areqi N. Binding mechanism, photo-induced cleavage and computational studies of interaction cefepime drug with Human serum albumin. J Biomol Struct Dyn 2024:1-11. [PMID: 38234057 DOI: 10.1080/07391102.2024.2304668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 01/07/2024] [Indexed: 01/19/2024]
Abstract
The binding interaction of cefepime to human serum albumin (HSA) in aqueous solution was investigated by molecular spectroscopy (UV spectra, fluorescence spectra and CD spectra), photo-cleavage and modeling studies under simulative physiological conditions. Spectrophotometric results are rationalized in terms of a static quenching process and binding constant (Kb) and the number of binding sites (n ≈ 1) were calculated using fluorescence quenching approaches at three temperature settings. Thermodynamic data of ΔG, ΔH and ΔS at different temperatures were evaluated. The results showed that the electrostatic and hydrogen bonding interactions play a major role in the binding of cefepime to HSA. The value of 3.4 nm for the distance r between the donor (HSA) and acceptor (cefepime) was derived from the fluorescence resonance energy transfer (FRET). FTIR and CD measurements has been reaffirmed HSA-cefepime association and demonstrated reduction in α-helical content of HSA. Furthermore, the study of molecular modeling also indicated that cefepime could strongly bind to the site I (subdomain IIA) of HSA. Additionally, cefepime shows efficient photo- cleavage of HSA cleavage. Our results may provide valuable information to understand the pharmacological profile of cefepime drug delivery in blood stream.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Waddhaah M Al-Asbahy
- Department of Chemistry, Faculty of Applied Science, Taiz University, Taiz, Yemen
| | - Manal Shamsi
- Department of Biochemistry, Faculty of Medicine and Medical Sciences, Taiz University, Taiz, Yemen
| | - Ahmed Senan
- Department of Chemistry, Faculty of Applied Science, Taiz University, Taiz, Yemen
| | - Niyazi Al-Areqi
- Department of Chemistry, Faculty of Applied Science, Taiz University, Taiz, Yemen
| |
Collapse
|
5
|
Sadeghi M, Miroliaei M, Taslimi P, Moradi M. In silico analysis of the molecular interaction and bioavailability properties between some alkaloids and human serum albumin. Struct Chem 2022. [DOI: 10.1007/s11224-022-01925-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
6
|
Zare Karizak A, Divsalar A, Leilabadi Asl A, Fateminasab F, Shityakov S, Saboury AA. Molecular insights into the interaction of 5-fluorouracil and Fe 3O 4 nanoparticles with beta-casein: An experimental and theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120538. [PMID: 34749259 DOI: 10.1016/j.saa.2021.120538] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 10/12/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
We investigated the potential carrier of milk beta-casein (β-CN) and its interactions with 5-fluorouracil (5-FU) and iron oxide nanoparticles (Fe3O4 NPs). We used different spectroscopic methods of fluorescence, UV-Visble, circular dichroism (CD), synchronous fluorescence, zeta potential assay, and computational studies to clarify the protein interaction with 5-FU and Fe3O4 NPs. The fluorescence data indicated both Fe3O4 NPs and 5-FU could quench the intrinsic fluorescence of β-CN. Fluorescence measurements showed that the single interaction of β-CN with 5-FU or Fe3O4 NPs was static, while reacted β-CN with both 5-FU and Fe3O4 NPs simultaneously showed a dynamic quenching. Synchronous fluorescence data in both tests revealed that the tryptophan (Trp) residue of β-CN had a dominant role in quenching and the polarity of its microenvironment more than tyrosine (Tyr) increased in interaction with 5-FU. All the binding sites and thermodynamic parameters were obtained at 25, 37, and 42 °C. The analysis of thermodynamic parameters and Job's plot techniques pointed to that both of these complexes with the 1:1 M ratio were exothermic (ΔH°<0) driven with the van der Waals and H-bonding interactions (in agreement with the docking results). The CD spectra in the region of far-UV and thermal denaturation study indicated minor changes in the secondary structure of β-CN in the presence of various concentrations of Fe3O4 NPs and 5-FU. Also, from the molecular dynamics (MD) analysis, as a result, the protein structure was stable during 100 ns. The outcomes highlighted that β-CN protein could form a great bind with 5-FU and Fe3O4 NPs ligands (supporting the zeta potential assay results) by independent binding sites. These results would be helpful insight to construct a potential magnetic nanocarrier β-CN base for 5-FU drug delivery.
Collapse
Affiliation(s)
- Ashkan Zare Karizak
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Adeleh Divsalar
- Department of Cell & Molecular Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran.
| | - Amineh Leilabadi Asl
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran
| | | | - Sergey Shityakov
- ITMO University, Infochemistry Scientific Center, Division of Chemoinformatics, Saint-Petersburg 191002, Russian Federation
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.
| |
Collapse
|
7
|
Ligand binding constants for human serum albumin evaluated by ratiometric analysis of DSC thermograms. Anal Biochem 2021; 628:114293. [PMID: 34181905 DOI: 10.1016/j.ab.2021.114293] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/16/2021] [Accepted: 06/23/2021] [Indexed: 02/07/2023]
Abstract
This paper describes an expanded application of our recently reported method (Eskew et al., Analytical Biochemistry 621,1 2021) utilizing thermogram signals for thermal denaturation measured by differential scanning calorimetry. Characteristic signals were used to quantitatively evaluate ligand binding constants for human serum albumin. In our approach the ensemble of temperature dependent calorimetric responses for various protein-ligand mixtures and native HSA were compared, in a ratiometric manner, to extract binding constants and stoichiometries. Protein/ligand mixtures were prepared at various ligand concentrations and subjected to thermal denaturation analysis by calorimetry. Measurements provided the melting temperature, Tm, and free-energy ΔGcal(37°C) for melting ligand-bound Albumin as a function of ligand concentration. Concentration dependent behaviors of these parameters derived from protein/ligand mixtures were used to construct dose-response curves. Fitting of dose-response curves yielded quantitative evaluation of the ligand binding constant and semi-quantitative estimates of the binding stoichiometry. Many of the ligands had known binding affinity for Albumin with binding constants reported in the literature. Evaluated binding parameters for the ligands impressively agreed with reported literature values determined using other standard experimental methods. Results are reported for 29 drug ligands binding to Albumin. These validate our calorimetry-based process for applications in pre-clinical drug screening.
Collapse
|
8
|
Valojerdi FM, Farasat A, Shariatifar H, Gheibi N. Study of HSA interactions with arachidonic acid using spectroscopic methods revealing molecular dynamics of HSA-AA interactions. Biomed Rep 2020; 12:125-133. [PMID: 32042421 PMCID: PMC7006104 DOI: 10.3892/br.2019.1270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 09/20/2019] [Indexed: 12/14/2022] Open
Abstract
The interaction between human serum albumin (HSA) and arachidonic acid (AA) as an unsaturated fatty acid were investigated in the present study using methods including UV-VIS spectrophotometry, fluorescence and circular dichroism (CD) spectroscopy, lifetime measurements, fluorescence anisotropy measurements and visual molecular dynamics (MD). The thermodynamic parameters were assessed from HSA thermal and chemical denaturation in the presence and absence of AA. From the thermal denaturation, the Tm and ΔG˚(298K) magnitudes obtained were 327.7 K and 88 kJ/mol, respectively, for HSA alone, and 323.4 K and 85 kJ/mol, respectively, following treatment with a 10 µM AA concentration. The same manner of reduction in Gibbs free energy as a criterion of protein stability was achieved during chemical denaturation by urea in the presence of AA. The present study investigates HSA binding nature through MD approaches, and the results indicated that the binding affinity of AA to the subdomain IIA of HSA is greater compared with that of subdomain IIIA. Although the HSA regular secondary structure evaluation by CD exhibited a minor change following incubation with AA, its tertiary structure revealed an observable fluctuation. Thus, it appears that the interaction between AA and HSA requires minor instability and partial structural changes.
Collapse
Affiliation(s)
| | - Alireza Farasat
- Cellular and Molecular Research Center, Qazvin University of Medical Sciences, Qazvin 3419915315, Iran
| | - Hanifeh Shariatifar
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj 6618634683, Iran
| | - Nematollah Gheibi
- Cellular and Molecular Research Center, Qazvin University of Medical Sciences, Qazvin 3419915315, Iran
| |
Collapse
|
9
|
Liu F, Zhang Y, Yu Q, Shen Y, Zheng Z, Cheng J, Zhang W, Ye Y. Exploration of the binding between ellagic acid, a potentially risky food additive, and bovine serum albumin. Food Chem Toxicol 2019; 134:110867. [PMID: 31586655 DOI: 10.1016/j.fct.2019.110867] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/17/2019] [Accepted: 10/01/2019] [Indexed: 12/21/2022]
Abstract
Ellagic acid (EA), a natural plant polyphenol, is usually used as a functional additive in variety of health foods. However, the potential toxicity of EA to human health should be paid enough attention. To clarify its biological toxicity in vivo, this study explored the binding mechanism of EA with bovine serum albumin (BSA) by means of spectroscopic approaches and molecular docking insimulative physiological conditions. The results showed that the mixture of BSA with EA could spontaneously cause the formation of BSA-EA complex through electrostatic interaction under simulative physiological conditions (0.01 mol·L-1Tris-HCl, 0.015 mol L-1 NaCl, pH = 7.4). Molecular docking experiments revealed that EA was primarily bound to the hydrophobic pocket of the site I (subdomain IIA) of BSA. It has been reported that the binding of small functional molecules to serum albumins remarkably impacts their absorption, distribution, metabolism, and excretion features. Therefore, this study might be helpful for human to have an in-depth understanding of the biological effect of EA in vivo and guide human to take it safely and reasonably.
Collapse
Affiliation(s)
- Fengru Liu
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yiyin Zhang
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Qiuyang Yu
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yizhong Shen
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China.
| | - Zhi Zheng
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Jieshun Cheng
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Wencheng Zhang
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yingwang Ye
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei, 230009, China.
| |
Collapse
|
10
|
Modulating the electron transport energy levels of protein by doping with foreign molecule. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
11
|
Structural characterization of α‑chymotrypsin after binding to curcumin: Spectroscopic and computational analysis of their binding mechanism. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111111] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
12
|
Fiori-Duarte AT, Bergamini FR, de Paiva REF, Manzano CM, Lustri WR, Corbi PP. A new palladium(II) complex with ibuprofen: Spectroscopic characterization, DFT studies, antibacterial activities and interaction with biomolecules. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
13
|
Makarska-Bialokoz M, Lipke A. Study of the binding interactions between uric acid and bovine serum albumin using multiple spectroscopic techniques. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
14
|
Makarska-Bialokoz M. Comparative study of binding interactions between porphyrin systems and aromatic compounds of biological importance by multiple spectroscopic techniques: A review. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 200:263-274. [PMID: 29694930 DOI: 10.1016/j.saa.2018.04.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 03/13/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Abstract
The specific spectroscopic and redox properties of porphyrins predestine them to fulfill the role of sensors during interacting with different biologically active substances. Monitoring of binding interactions in the systems porphyrin-biologically active compound is a key question not only in the field of physiological functions of living organisms, but also in environmental protection, notably in the light of the rapidly growing drug consumption and concurrently the production of drug effluents. Not always beneficial action of drugs on natural porphyrin systems induces to further studies, with commercially available porphyrins as the model systems. Therefore the binding process between several water-soluble porphyrins and a series of biologically active compounds (e.g. caffeine, guanine, theophylline, theobromine, xanthine, uric acid) has been studied in different aqueous solutions analyzing their absorption and steady-state fluorescence spectra, the porphyrin fluorescence lifetimes and their quantum yields. The magnitude of the binding and fluorescence quenching constants values for particular quenchers decreases in a series: uric acid > guanine > caffeine > theophylline > theobromine > xanthine. In all the systems studied there are characters of static quenching, as a consequence of the π-π-stacked non-covalent and non-fluorescent complexes formation between porphyrins and interacting compounds, accompanied simultaneously by the additional specific binding interactions. The porphyrin fluorescence quenching can be explain by the photoinduced intermolecular electron transfer from aromatic compound to the center of the porphyrin molecule, playing the role of the binding site. Presented results can be valuable for designing of new fluorescent porphyrin chemosensors or monitoring of drug traces in aqueous solutions. The obtained outcomes have also the toxicological and medical importance, providing insight into the interactions of the water-soluble porphyrins with biologically active substances.
Collapse
Affiliation(s)
- Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
| |
Collapse
|
15
|
Niaei N, Hasanzadeh M, Shadjou N. Molecular interaction of some cardiovascular drugs with human serum albumin at physiological-like conditions: A new approach. J Mol Recognit 2018; 31:e2715. [PMID: 29630759 DOI: 10.1002/jmr.2715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/26/2018] [Accepted: 03/07/2018] [Indexed: 11/09/2022]
Abstract
In the present study, the interaction of human serum albumin (HSA) with some cardiovascular drugs (CARs) under physiological conditions was investigated via the fluorescence spectroscopic and Fourier transform infrared spectroscopy. The CAR included Captopril, Timolol, Propranolol, Atenolol, and Amiodarone. Cardiovascular drugs can effectively quench the endogenous fluorescence of HSA by static quenching mechanism. The fluorescence quenching of HSA is mainly caused by complex formation of HSA with CAR. The binding reaction of CAR with HSA can be concluded that hydrophobic and electrostatic interactions are the main binding forces in the CAR-HSA system. The results showed that CAR strongly quenched the intrinsic fluorescence of HSA through a static quenching procedure, and nonradiation energy transfer happened within molecules. Fourier transform infrared spectroscopy absorption studies showed that the secondary structure was changed according to the interaction of HSA and CAR. The binding reaction of CAR with HSA can be concluded that hydrophobic and electrostatic interactions are the main binding forces in the CAR-HSA system. The results obtained herein will be of biological significance in pharmacology and clinical medicines.
Collapse
Affiliation(s)
- Navid Niaei
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, 51664, Iran
| | - Mohammad Hasanzadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, 51664, Iran
| | - Nasrin Shadjou
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
16
|
Interaction of catecholamine precursor l-Dopa with lysozyme: A biophysical insight. Int J Biol Macromol 2018; 109:1132-1139. [DOI: 10.1016/j.ijbiomac.2017.11.107] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/15/2017] [Accepted: 11/16/2017] [Indexed: 12/13/2022]
|
17
|
Makarska-Bialokoz M. Interactions of hemin with bovine serum albumin and human hemoglobin: A fluorescence quenching study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 193:23-32. [PMID: 29212045 DOI: 10.1016/j.saa.2017.11.063] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/26/2017] [Accepted: 11/29/2017] [Indexed: 05/28/2023]
Abstract
The binding interactions between hemin (Hmi) and bovine serum albumin (BSA) or human hemoglobin (HHb), respectively, have been examined in aqueous solution at pH=7.4, applying UV-vis absorption, as well as steady-state, synchronous and three-dimensional fluorescence spectra techniques. Representative results received for both BSA and HHb intrinsic fluorescence proceeding from the interactions with hemin suggest the formation of stacking non-covalent and non-fluorescent complexes in both the Hmi-BSA and Hmi-HHb systems, with highly possible concurrent formation of a coordinate bond between a group on the protein surface and the metal in Hmi molecule. All the values of calculated parameters, the binding, fluorescence quenching and bimolecular quenching rate constants point to the involvement of static quenching in both the systems studied. The blue shift in the synchronous fluorescence spectra imply the participation of both tryptophan and tyrosine residues in quenching of BSA and HHb intrinsic fluorescence. Depicted outcomes suggest that hemin is supposedly able to influence the physiological functions of BSA and HHb, the most important blood proteins, particularly in case of its overuse.
Collapse
Affiliation(s)
- Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
| |
Collapse
|
18
|
Lipke A, Makarska-Bialokoz M, Sierakowska A, Jasiewicz B. Non-covalent interactions between thio-caffeine derivatives and water-soluble porphyrin in ethanol-water environment. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 192:304-311. [PMID: 29166626 DOI: 10.1016/j.saa.2017.11.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/09/2017] [Accepted: 11/16/2017] [Indexed: 06/07/2023]
Abstract
To determine the binding interactions and ability to form the non-covalent systems, the association process between 5,10,15,20-tetrakis[4-(trimethylammonio)phenyl]-21H,23H-porphine tetra-p-tosylate (H2TTMePP) and a series of five structurally diverse thio-caffeine analogues has been studied in ethanol and ethanol-water solutions, analyzing its absorption and steady-state fluorescence spectra. The porphyrin fluorescence lifetimes in the systems studied were established as well. During the titration with thio-caffeine compounds the slight bathochromic effect and considerable hypochromicity of the porphyrin Soret band maximum can be noted. The fluorescence quenching effect observed for interactions in H2TTMePP - thio-caffeine derivative systems, as well as the order of binding and fluorescence quenching constants (of 105-103mol-1) suggest the existence of the mechanism of static quenching due to the formation of non-covalent and non-fluorescent stacking complexes. In all the systems studied the phenomenon of the fractional accessibility of the fluorophore for the quencher was observed as well. Additionally, the specific binding interactions, due to the changes in reaction environment polarity, can be observed. It was found that thio-caffeine compounds can quench the porphyrin fluorescence according to the structure of thio-substituent in caffeine molecule. The obtained results can be potentially useful from scientific, therapeutic or environmental points of view.
Collapse
Affiliation(s)
- Agnieszka Lipke
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
| | - Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
| | - Arleta Sierakowska
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland
| | - Beata Jasiewicz
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland
| |
Collapse
|
19
|
Wu Y, Zhang H, Wang Y. Conformational and functional changes of bovine serum albumin induced by TiO2 nanoparticles binding. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.07.116] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
20
|
Wang X, He LL, Liu B, Wang X, Xu L, Wang XF, Sun T. Decrease of the affinity of theophylline bind to serum proteins induced by flavonoids and their synergies on protein conformation. Int J Biol Macromol 2017; 107:1066-1073. [PMID: 28947221 DOI: 10.1016/j.ijbiomac.2017.09.080] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/16/2017] [Accepted: 09/20/2017] [Indexed: 12/12/2022]
Abstract
In this study, the single and simultaneous interactions of theophylline and flavonoids with human serum albumin (HSA) were studied by multi-spectroscopic and molecular docking approaches. The influences of flavonoids on the binding constant (Kb) and the binding distance (r) of theophylline bind to HSA were determined and the changes of HSA conformation caused by the synergies of theophylline and flavonoids were investigated. Because theophylline, rutin and baicalin are all bond to the same binding site, the competitive bind of theophylline and flavonoids to HSA leads to the reduction of the Ka value of theophylline binding to HSA. The addition of rutin and baicalin can increase the value of r of theophylline binding to HSA, which further confirm the existence of the competitive bind of theophylline and flavonoids to HSA. Additionally, the results of synchronous fluorescence, three-dimensional fluorescence and circular dichroism spectra indicate that the presence of rutin and baicalin can give rise to the further changes of HSA conformation. These results suggest that the intake of flavonoid-rich food and beverages can increase the serum concentrations of theophylline and induce a high incidence of toxic symptom in clinic.
Collapse
Affiliation(s)
- Xin Wang
- Department of Chemistry, College of Science, Northeastern University, Shenyang 110819, China; School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Ling-Ling He
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Bin Liu
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Xin Wang
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Liang Xu
- Department of Chemistry, College of Science, Northeastern University, Shenyang 110819, China; School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Xiao-Fang Wang
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Ting Sun
- Department of Chemistry, College of Science, Northeastern University, Shenyang 110819, China.
| |
Collapse
|
21
|
Makarska-Bialokoz M. Investigation of the binding affinity in vitamin B12-Bovine serum albumin system using various spectroscopic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 184:262-269. [PMID: 28528252 DOI: 10.1016/j.saa.2017.05.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/06/2017] [Accepted: 05/08/2017] [Indexed: 05/28/2023]
Abstract
The binding affinity between vitamin B12 (VitB12) and bovine serum albumin (BSA) has been investigated in aqueous solution at pH=7.4, employing UV-vis absorption and steady-state, synchronous and three-dimensional fluorescence spectra techniques. Representative effects noted for BSA intrinsic fluorescence resulting from the interactions with VitB12 confirm the formation of π-π stacked non-covalent and non-fluorescent complexes in the system VitB12-BSA. All the determined parameters, the binding, fluorescence quenching and bimolecular quenching rate constants (of the order of 104Lmol-1, 103Lmol-1 and 1011Lmol-1s-1, respectively), as well as Förster resonance energy transfer parameters validate the mechanism of static quenching. The interaction with VitB12 induces folding of the polypeptide chains around Trp residues of BSA, resulting in a more hydrophobic surrounding. Presented outcomes suggest that the addition of VitB12 can lead to the more organized BSA conformation and its more folded tertiary structure, what could influence the physiological functions of bovine serum albumin, notably in case of its overuse or abnormal metabolism.
Collapse
Affiliation(s)
- Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
| |
Collapse
|
22
|
Abdelhameed AS, Nusrat S, Ajmal MR, Zakariya SM, Zaman M, Khan RH. A biophysical and computational study unraveling the molecular interaction mechanism of a new Janus kinase inhibitor Tofacitinib with bovine serum albumin. J Mol Recognit 2016; 30. [DOI: 10.1002/jmr.2601] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 11/12/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Ali Saber Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy; King Saud University; Riyadh Saudi Arabia
| | - Saima Nusrat
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh India
| | | | | | - Masihuz Zaman
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh India
| |
Collapse
|
23
|
Studies to reveal the nature of interactions between catalase and curcumin using computational methods and optical techniques. Int J Biol Macromol 2016; 95:550-556. [PMID: 27865955 DOI: 10.1016/j.ijbiomac.2016.11.050] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/13/2016] [Accepted: 11/14/2016] [Indexed: 11/20/2022]
Abstract
Curcumin is an important antioxidant compound, and is widely reported as an effective component for reducing complications of many diseases. However, the detailed mechanisms of its activity remain poorly understood. We found that curcumin can significantly increase catalase activity of BLC (bovine liver catalase). The mechanism of curcumin action was investigated using a computational method. We suggested that curcumin may activate BLC by modifying the bottleneck of its narrow channel. The molecular dynamic simulation data showed that placing curcumin on the structure of enzyme can increase the size of the bottleneck in the narrow channel of BLC, and readily allow the access of substrate to the active site. Because of the increase of the distance between amino acids of the bottleneck in the presence of curcumin, the entrance space of substrate increased from 250Å3 to 440Å3. In addition, the increase in emission of intrinsic fluorescence of BLC in presence of curcumin demonstrated changes in tertiary structure of catalase, and possibility of less quenching. We also used circular dichroism (CD) spectropolarimetry to determine how curcumin may alter the enzyme secondary structure. Catalase spectra in the presence of various concentrations of curcumin showed an increase in the amount of α-helix content.
Collapse
|
24
|
Nusrat S, Siddiqi MK, Zaman M, Zaidi N, Ajmal MR, Alam P, Qadeer A, Abdelhameed AS, Khan RH. A Comprehensive Spectroscopic and Computational Investigation to Probe the Interaction of Antineoplastic Drug Nordihydroguaiaretic Acid with Serum Albumins. PLoS One 2016; 11:e0158833. [PMID: 27391941 PMCID: PMC4938263 DOI: 10.1371/journal.pone.0158833] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Accepted: 06/22/2016] [Indexed: 11/19/2022] Open
Abstract
Exogenous drugs that are used as antidote against chemotheray, inflammation or viral infection, gets absorbed and interacts reversibly to the major serum transport protein i.e. albumins, upon entering the circulatory system. To have a structural guideline in the rational drug designing and in the synthesis of drugs with greater efficacy, the binding mechanism of an antineoplastic and anti-inflammatory drug Nordihydroguaiaretic acid (NDGA) with human and bovine serum albumins (HSA & BSA) were examined by spectroscopic and computational methods. NDGA binds to site II of HSA with binding constant (Kb) ~105 M-1 and free energy (ΔG) ~ -7.5 kcal.mol-1. It also binds at site II of BSA but with lesser binding affinity (Kb) ~105 M-1 and ΔG ~ -6.5 kcal.mol-1. The negative value of ΔG, ΔH and ΔS for both the albumins at three different temperatures confirmed that the complex formation process between albumins and NDGA is spontaneous and exothermic. Furthermore, hydrogen bonds and hydrophobic interactions are the main forces involved in complex formation of NDGA with both the albumins as evaluated from fluorescence and molecular docking results. Binding of NDGA to both the albumins alter the conformation and causes minor change in the secondary structure of proteins as indicated by the CD spectra.
Collapse
Affiliation(s)
- Saima Nusrat
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | | | - Masihuz Zaman
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Nida Zaidi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Mohammad Rehan Ajmal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Atiyatul Qadeer
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Ali Saber Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
- * E-mail:
| |
Collapse
|
25
|
Rastegari B, Karbalaei-Heidari HR, Yousefi R, Zeinali S, Nabavizadeh M. Interaction of prodigiosin with HSA and β-Lg: Spectroscopic and molecular docking studies. Bioorg Med Chem 2016; 24:1504-12. [DOI: 10.1016/j.bmc.2016.02.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 02/05/2016] [Accepted: 02/12/2016] [Indexed: 10/22/2022]
|
26
|
Islam MM, Sonu VK, Gashnga PM, Moyon NS, Mitra S. Caffeine and sulfadiazine interact differently with human serum albumin: A combined fluorescence and molecular docking study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 152:23-33. [PMID: 26186394 DOI: 10.1016/j.saa.2015.07.051] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 07/07/2015] [Accepted: 07/08/2015] [Indexed: 06/04/2023]
Abstract
The interaction and binding behavior of the well-known drug sulfadiazine (SDZ) and psychoactive stimulant caffeine (CAF) with human serum albumin (HSA) was monitored by in vitro fluorescence titration and molecular docking calculations under physiological condition. The quenching of protein fluorescence on addition of CAF is due to the formation of protein-drug complex in the ground state; whereas in case of SDZ, the experimental results were explained on the basis of sphere of action model. Although both these compounds bind preferentially in Sudlow's site 1 of the protein, the association constant is approximately two fold higher in case of SDZ (∼4.0×10(4)M(-1)) in comparison with CAF (∼9.3×10(2)M(-1)) and correlates well with physico-chemical properties like pKa and lipophilicity of the drugs. Temperature dependent fluorescence study reveals that both SDZ and CAF bind spontaneously with HSA. However, the binding of SDZ with the protein is mainly governed by the hydrophobic forces in contrast with that of CAF; where, the interaction is best explained in terms of electrostatic mechanism. Molecular docking calculation predicts the binding of these drugs in different location of sub-domain IIA in the protein structure.
Collapse
Affiliation(s)
- Mullah Muhaiminul Islam
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Vikash K Sonu
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Pynsakhiat Miki Gashnga
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - N Shaemningwar Moyon
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Sivaprasad Mitra
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India.
| |
Collapse
|
27
|
Karthikeyan S, Bharanidharan G, Kesherwani M, Mani KA, Srinivasan N, Velmurugan D, Aruna P, Ganesan S. Insights into the binding of thiosemicarbazone derivatives with human serum albumin: spectroscopy and molecular modelling studies. J Biomol Struct Dyn 2015; 34:1264-81. [DOI: 10.1080/07391102.2015.1075905] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
28
|
Dangkoob F, Housaindokht MR, Asoodeh A, Rajabi O, Rouhbakhsh Zaeri Z, Verdian Doghaei A. Spectroscopic and molecular modeling study on the separate and simultaneous bindings of alprazolam and fluoxetine hydrochloride to human serum albumin (HSA): with the aim of the drug interactions probing. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 137:1106-1119. [PMID: 25300043 DOI: 10.1016/j.saa.2014.08.149] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 07/20/2014] [Accepted: 08/31/2014] [Indexed: 06/04/2023]
Abstract
The objective of the present research is to study the interaction of separate and simultaneous of alprazolam (ALP) and fluoxetine hydrochloride (FLX) with human serum albumin (HSA) in phosphate buffer (pH 7.4) using different kinds of spectroscopic, cyclic voltammetry and molecular modeling techniques. The absorbance spectra of protein, drugs and protein-drug showed complex formation between the drugs and HSA. Fluorescence analysis demonstrated that ALP and FLX could quench the fluorescence spectrum of HSA and demonstrated the conformational change of HSA in the presence of both drugs. Also, fluorescence quenching mechanism of HSA-drug complexes both separately and simultaneously was suggested as static quenching. The analysis of UV absorption data and the fluorescence quenching of HSA in the binary and ternary systems showed that FLX decreased the binding affinity between ALP and HSA. On the contrary, ALP increased the binding affinity of FLX and HSA. The results of synchronous fluorescence and three-dimensional fluorescence spectra indicated that the binding of drugs to HSA would modify the microenvironment around the Trp and Tyr residues and the conformation of HSA. The distances between Trp residue and the binding sites of the drugs were estimated according to the Förster theory, and it was demonstrated that non-radiative energy transfer from HSA to the drugs occurred with a high probability. Moreover, according to CV measurements, the decrease of peak current in the cyclic voltammogram of the both drugs in the presence of HSA revealed that they interacted with albumin and binding constants were calculated for binary systems which were in agreement with the binding constants obtained from UV absorption and fluorescence spectroscopy. The prediction of the best binding sites of ALP and FLX in binary and ternary systems in molecular modeling approach was done using of Gibbs free energy.
Collapse
Affiliation(s)
- Faeze Dangkoob
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mohmmad Reza Housaindokht
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; Research and Technology Center of Biomolecules, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Ahmad Asoodeh
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; Research and Technology Center of Biomolecules, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Omid Rajabi
- Medical Chemistry Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Asma Verdian Doghaei
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| |
Collapse
|
29
|
Makarska-Bialokoz M. Spectroscopic evidence of xanthine compounds fluorescence quenching effect on water-soluble porphyrins. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.10.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
30
|
Investigation of the interaction between patulin and human serum albumin by a spectroscopic method, atomic force microscopy, and molecular modeling. BIOMED RESEARCH INTERNATIONAL 2014; 2014:734850. [PMID: 25110690 PMCID: PMC4119689 DOI: 10.1155/2014/734850] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 04/08/2014] [Indexed: 11/18/2022]
Abstract
The interaction of patulin with human serum albumin (HSA) was studied in vitro under normal physiological conditions. The study was performed using fluorescence, ultraviolet-visible spectroscopy (UV-Vis), circular dichroism (CD), atomic force microscopy (AFM), and molecular modeling techniques. The quenching mechanism was investigated using the association constants, the number of binding sites, and basic thermodynamic parameters. A dynamic quenching mechanism occurred between HSA and patulin, and the binding constants (K) were 2.60 × 10(4), 4.59 × 10(4), and 7.01 × 10(4) M(-1) at 288, 300, and 310 K, respectively. Based on fluorescence resonance energy transfer, the distance between the HSA and patulin was determined to be 2.847 nm. The ΔG (0), ΔH (0), and ΔS (0) values across various temperatures indicated that hydrophobic interaction was the predominant binding force. The UV-Vis and CD results confirmed that the secondary structure of HSA was altered in the presence of patulin. The AFM results revealed that the individual HSA molecule dimensions were larger after interaction with patulin. In addition, molecular modeling showed that the patulin-HSA complex was stabilized by hydrophobic and hydrogen bond forces. The study results suggested that a weak intermolecular interaction occurred between patulin and HSA. Overall, the results are potentially useful for elucidating the toxigenicity of patulin when it is combined with the biomolecular function effect, transmembrane transport, toxicological, testing and other experiments.
Collapse
|
31
|
Wang W, Zhang W, Duan Y, Jiang Y, Zhang L, Zhao B, Tu P. Investigation of the binding sites and orientation of caffeine on human serum albumin by surface-enhanced Raman scattering and molecular docking. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 115:57-63. [PMID: 23831979 DOI: 10.1016/j.saa.2013.05.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/10/2013] [Accepted: 05/13/2013] [Indexed: 06/02/2023]
Abstract
Fluorescence, normal Raman and surface-enhanced Raman scattering (SERS) were introduced to explore the absorptive geometry of caffeine on Human Serum Albumin (HSA) at physiological condition. The molecular docking was also employed to make a better understanding of the interaction between caffeine and HSA as well as to elucidate the detailed information of the major binding site. The results showed that caffeine could bind to HSA via the hydrophobic force of aromatic stacking and the main binding group on caffeine could be the pyrimidine ring. In addition, a consecutive set of changes in the orientation of caffeine molecule had been demonstrated during the process of caffeine binding to HSA, and the primary binding site was considered to be a hydrophobic cavity formed by Leu198, Lys199, Ser202, Phe211, Trp214, Val344, Ser454 and Leu481 in domain II.
Collapse
Affiliation(s)
- Weinan Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, PR China
| | | | | | | | | | | | | |
Collapse
|
32
|
Namiesnik J, Vearasilp K, Leontowicz H, Leontowicz M, Ham KS, Kang SG, Park YK, Arancibia-Avila P, Toledo F, Gorinstein S. Comparative assessment of two extraction procedures for determination of bioactive compounds in some berries used for daily food consumption. Int J Food Sci Technol 2013. [DOI: 10.1111/ijfs.12287] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jacek Namiesnik
- Department of Analytical Chemistry; Chemical Faculty; Gdańsk University of Technology; Gdańsk 80 952 Poland
| | - Kann Vearasilp
- Faculty of Pharmacy; Srinakharinwirot University; Nakornayok 26120 Thailand
| | - Hanna Leontowicz
- Faculty of Veterinary Medicine; Department of Physiological Sciences; Warsaw University of Life Sciences (SGGW); Warsaw 02776 Poland
| | - Maria Leontowicz
- Faculty of Veterinary Medicine; Department of Physiological Sciences; Warsaw University of Life Sciences (SGGW); Warsaw 02776 Poland
| | - Kyung-Sik Ham
- Department of Food Engineering; Mokpo National University; Muan 534 729 Jeonnam South Korea
| | - Seong-Gook Kang
- Department of Food Engineering; Mokpo National University; Muan 534 729 Jeonnam South Korea
| | - Yang-Kyun Park
- Department of Food Engineering; Mokpo National University; Muan 534 729 Jeonnam South Korea
| | | | - Fernando Toledo
- Department of Basic Sciences; Universidad del Bio-Bio; Chillan P.O. Box 447 or 3780000 Chile
| | - Shela Gorinstein
- The Institute for Drug Research; School of Pharmacy; The Hebrew University; Hadassah Medical School; Jerusalem 91120 Israel
| |
Collapse
|
33
|
The interaction of 2-mercaptobenzimidazole with human serum albumin as determined by spectroscopy, atomic force microscopy and molecular modeling. Colloids Surf B Biointerfaces 2012; 104:311-7. [PMID: 23333916 DOI: 10.1016/j.colsurfb.2012.12.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 12/11/2012] [Accepted: 12/12/2012] [Indexed: 11/24/2022]
Abstract
The interaction of 2-mercaptobenzimidazole (MBI) with human serum albumin (HSA) was studied in vitro by equilibrium dialysis under normal physiological conditions. This study used fluorescence, ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared (FT-IR), circular dichroism (CD) and Raman spectroscopy, atomic force microscopy (AFM) and molecular modeling techniques. Association constants, the number of binding sites and basic thermodynamic parameters were used to investigate the quenching mechanism. Based on the fluorescence resonance energy transfer, the distance between the HSA and MBI was 2.495 nm. The ΔG(0), ΔH(0), and ΔS(0) values across temperature indicated that the hydrophobic interaction was the predominant binding Force. The UV, FT-IR, CD and Raman spectra confirmed that the HSA secondary structure was altered in the presence of MBI. In addition, the molecular modeling showed that the MBI-HSA complex was stabilized by hydrophobic forces, which resulted from amino acid residues. The AFM results revealed that the individual HSA molecule dimensions were larger after interaction with MBI. Overall, this study suggested a method for characterizing the weak intermolecular interaction. In addition, this method is potentially useful for elucidating the toxigenicity of MBI when it is combined with the biomolecular function effect, transmembrane transport, toxicological testing and other experiments.
Collapse
|
34
|
Janati Fard F, Mashhadi Khoshkhoo Z, Mirtabatabaei H, Housaindokht MR, Jalal R, Eshtiagh Hosseini H, Bozorgmehr MR, Esmaeili AA, Javan Khoshkholgh M. Synthesis, characterization and interaction of N,N'-dipyridoxyl (1,4-butanediamine) Co(III) salen complex with DNA and HSA. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 97:74-82. [PMID: 22750340 DOI: 10.1016/j.saa.2012.05.066] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 05/14/2012] [Accepted: 05/25/2012] [Indexed: 06/01/2023]
Abstract
Co(III) salen complex with N,N'-dipyridoxyl (1,4-butanediamine) Schiff-base ligand as tetradentate ligand was synthesized and characterized by the elemental and spectroscopic analysis. The interaction of this complex with calf thymus DNA (ct DNA) has been investigated in vitro using UV absorption, fluorescence spectroscopy, thermal denaturation and gel electrophoresis techniques. The binding constant has been estimated to be 1×10(4)M(-1) using UV absorption. The addition of ct DNA to Co(III) salen solution resulted in a fluorescence quenching. The binding constant and site size binding have been calculated in connection with other experimental observations show that the interactive model between Co(III) salen and ct DNA is an intercalative one. The interaction between plasmid DNA (pTZ57R DNA) and this complex is confirmed by gel electrophoresis studies. Furthermore, the interaction between HSA and Co(III) salen complex was investigated by UV absorption, fluorescence spectroscopy and molecular modeling. The binding constant for the interaction of this complex with HSA were found to be 3.854×10(4)M(-1) using UV absorption, which was in good agreement with the binding constant obtained from fluorescence method (3.866×10(4)M(-1)). The binding distance between HSA and this complex was estimated to be 2.48nm according to Förster theory of non-radioactive energy transfer. Molecular modeling studies suggested that hydrophobic interaction was the predominant intermolecular forces stabilizing Co(III) complex-HSA system.
Collapse
Affiliation(s)
- F Janati Fard
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Adegoke OA, Ghosh M, Mukherjee A. Spectrophotometric and thermodynamic studies of the interactions of 4-carboxyl-2,6-dinitrophenylazohydroxynaphthalenes with bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:1038-1046. [PMID: 22954811 DOI: 10.1016/j.saa.2012.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Revised: 07/29/2012] [Accepted: 08/08/2012] [Indexed: 06/01/2023]
Abstract
The intermolecular interaction occurring between bovine serum albumin and 4-carboxyl-2,6-dinitrophenylazohydroxynaphthalene in aqueous media has been studied spectrophotometrically at different temperatures including body temperature. Evidence for the formation of new molecular complexes was established by hypsochromic and hypochromic shifts of the spectra of dye-BSA complexes compared to the spectra of unbound dyes. One congener (AZ-02) gave a minor peak characteristic of charge-transfer complexation. The binding constants of the four monoazo dyes were investigated and found to vary according to the dye structure and temperature of investigation. AZ-01 and -04 combined with BSA at approximately 1:1 mol ratio while the other two congeners with additional proton donors gave greater than this mole ratio. Thermodynamic considerations established that the dyes utilized the various forms of binding modes; hydrogen bonding, hydrophobic bonding, van der Waals and AZ-03 was particularly involved in electrostatic interactions giving positive entropy change for a small enthalpy change. The observed properties were correlated with the genotoxicity potentials of the monoazo dyes. The results obtained should prove beneficial in designing other molecules in this category of chemical class.
Collapse
Affiliation(s)
- Olajire A Adegoke
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Orita UI, Ibadan, Nigeria.
| | | | | |
Collapse
|
36
|
Poór M, Kunsági-Máté S, Czibulya Z, Li Y, Peles-Lemli B, Petrik J, Vladimir-Knežević S, Kőszegi T. Fluorescence spectroscopic investigation of competitive interactions between ochratoxin A and 13 drug molecules for binding to human serum albumin. LUMINESCENCE 2012; 28:726-33. [PMID: 22987806 DOI: 10.1002/bio.2423] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 07/13/2012] [Accepted: 07/19/2012] [Indexed: 11/11/2022]
Abstract
Ochratoxin A (OTA) is a highly toxic mycotoxin found worldwide in cereals, foods, animal feeds and different drinks. Based on previous studies, OTA is one of the major causes of the chronic tubulointerstitial nephropathy known as Balkan endemic nephropathy (BEN) and exerts several other adverse effects shown by cell and/or animal models. It is a well-known fact that OTA binds to various albumins with very high affinity. Recently, a few studies suggested that reducing the bound fraction of OTA might reduce its toxicity. Hypothetically, certain drugs can be effective competitors displacing OTA from its albumin complex. Therefore, we examined 13 different drug molecules to determine their competing abilities to displace OTA from human serum albumin (HSA). Competitors and ineffective chemicals were identified with a steady-state fluorescence polarization-based method. After characterization the competitive abilities of individual drugs, drug pairs were formed and their displacing activity were tested in OTA-HSA system. Indometacin, phenylbutazone, warfarin and furosemide showed the highest competing capacity but ibuprofen, glipizide and simvastatin represented detectable interaction too. Investigations of drug pairs raised the possibility of the presence of diverse binding sites of competing drugs. Apart from the chemical information obtained in our model, this explorative research might initiate future designs for epidemiologic studies to gain further in vivo evidence of long-term (potentially protective) effects of competing drugs administered to human patients.
Collapse
Affiliation(s)
- Miklós Poór
- Institute of Laboratory Medicine, University of Pécs, H-7624, Pécs, Hungary
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Eby DM, Harbaugh S, Tatum RN, Farrington KE, Kelley-Loughnane N, Johnson GR. Bacterial sunscreen: layer-by-layer deposition of UV-absorbing polymers on whole-cell biosensors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10521-10527. [PMID: 22694254 DOI: 10.1021/la3014514] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
UV-protective coatings on live bacterial cells were created from the assembly of cationic and UV-absorbing anionic polyelectrolytes using layer-by-layer (LbL) methodology. A cationic polymer (polyallylamine) and three different anionic polymers with varying absorbance in the UV range (poly(vinyl sulfate), poly(4-styrenesulfonic acid), and humic acid) were used to encapsulate Escherichia coli cells with two different green fluorescent protein (GFP) expression systems: constitutive expression of a UV-excitable GFP (GFPuv) and regulated expression of the intensely fluorescent GFP from amphioxus (GFPa1) through a theophylline-inducible riboswitch. Riboswitches activate protein expression after specific ligand-RNA binding events. Hence, they operate as a cellular biosensor that will activate reporter protein synthesis after exposure to a ligand target. E. coli cells coated with UV-absorbing polymers demonstrated enhanced protection of GFP stability, metabolic activity, and viability after prolonged exposure to radiation from a germicidal lamp. The results show the effectiveness of LbL coatings to provide UV protection to living cells for biotechnological applications.
Collapse
Affiliation(s)
- D Matthew Eby
- Universal Technology Corporation and Air Force Research Laboratory, Materials and Manufacturing Directorate, Tyndall Air Force Base, 139 Barnes Drive, Building 1117, Tyndall AFB, Florida 32403, United States.
| | | | | | | | | | | |
Collapse
|
38
|
Abstract
The association between water-soluble porphyrins: 4,4′,4″,4‴-(21 H,23 H-porphine-5,10,15,20-tetrayl)tetrakis-(benzoic acid) (H2TCPP), 5,10,15,20-tetrakis(4-sulfonatophenyl)-21 H,23 H-porphine (H2TPPS4), 5,10,15,20-tetrakis[4-(trimethylammonio)phenyl]-21 H,23 H-porphine tetra-p-tosylate (H2TTMePP), 5,10,15,20-tetrakis(1-methyl-4-pyridyl)-21 H,23 H-porphine tetra-p-tosylate (H2TMePyP), the Cu(II) complexes of H2TTMePP and H2TMePyP, as well as chlorophyll a with caffeine (1,3,7-trimethylxanthine) has been studied analysing their absorption and emission spectra in aqueous (or acetone in case of chlorophyll a) solution. During the titration by caffeine the porphyrins absorption spectra undergo the evolution – the bathochromic effect can be observed as well as the hypochromicity of the Soret maximum. The association constants were calculated using curve-fitting procedure (KAC of the order of magnitude of 103 mol-1). Whereas the emission spectra point at the presence of the fluorescence quenching effect testifying for the partial inactivation of the porphyrin molecule. The fluorescence quenching constants were calculated from Stern-Volmer plots. The results obtained show that caffeine can interact with water-soluble porphyrins and through formation of stacking complexes is able to quench their ability to emission.
Collapse
|
39
|
Gorinstein S, Arancibia-Avila P, Toledo F, Namiesnik J, Leontowicz H, Leontowicz M, Ham KS, Kang SG, Vearasilp K, Suhaj M. Application of Analytical Methods for the Determination of Bioactive Compounds in Some Berries. FOOD ANAL METHOD 2012. [DOI: 10.1007/s12161-012-9453-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
40
|
Investigation of interaction of fluorescent marker Bengal Rose with human serum albumin at various values of pH. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.02.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
41
|
Flis S, Jastrzebski Z, Namiesnik J, Arancibia-Avila P, Toledo F, Leontowicz H, Leontowicz M, Suhaj M, Trakhtenberg S, Gorinstein S. Evaluation of inhibition of cancer cell proliferation in vitro with different berries and correlation with their antioxidant levels by advanced analytical methods. J Pharm Biomed Anal 2012; 62:68-78. [DOI: 10.1016/j.jpba.2012.01.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 01/04/2012] [Accepted: 01/05/2012] [Indexed: 12/14/2022]
|
42
|
Zohoorian-Abootorabi T, Sanee H, Iranfar H, Saberi MR, Chamani J. Separate and simultaneous binding effects through a non-cooperative behavior between cyclophosphamide hydrochloride and fluoxymesterone upon interaction with human serum albumin: multi-spectroscopic and molecular modeling approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 88:177-191. [PMID: 22217702 DOI: 10.1016/j.saa.2011.12.026] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 11/25/2011] [Accepted: 12/15/2011] [Indexed: 05/31/2023]
Abstract
This study was designed to examine the interaction of two anti-breast cancer drugs, i.e., fluoxymesterone (FLU) and cyclophosphamide (CYC), with human serum albumin (HSA) using different kinds of spectroscopic, zeta potential and molecular modeling techniques under imitated physiological conditions. The RLS technique was utilized to investigate the effect of the two anticancer drugs on changes of the protein conformation, both separately and simultaneously. Our study suggested that the enhancement in RLS intensity was attributed to the formation of a new complex between the two drugs and the protein. Both drugs demonstrated a powerful ability to quench the fluorescence of HSA, and the fluorescence quenching action was much stronger when the two drugs coexisted. The quenching mechanism was suggested to be static as confirmed by time-resolved fluorescence spectroscopy results. The effect of both drugs on the conformation of HSA was analyzed using synchronous fluorescence spectroscopy. Our results revealed that the fluorescence quenching of HSA originated from the Trp and Tyr residues, and demonstrated a conformational change of HSA with the addition of both drugs. The binding distances between HSA and the drugs were estimated by the Förster theory, and it was revealed that nonradiative energy transfer from HSA to both drugs occurred with a high probability. According to CD measurements, the influence of both drugs on the secondary structure of HSA in aqueous solutions was also investigated and illustrated that the α-helix content of HSA decreased with increasing drug concentration in both systems. Moreover, the zeta-potential experiments revealed that both drugs induced conformational changes on HSA. Docking studies were also performed and demonstrated that a reduction of the binding affinity between the drugs and HSA occurred in the presence of both drugs.
Collapse
|
43
|
Housaindokht MR, Rouhbakhsh Zaeri Z, Bahrololoom M, Chamani J, Bozorgmehr MR. Investigation of the behavior of HSA upon binding to amlodipine and propranolol: Spectroscopic and molecular modeling approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 85:79-84. [PMID: 22024455 DOI: 10.1016/j.saa.2011.09.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2011] [Revised: 09/07/2011] [Accepted: 09/08/2011] [Indexed: 05/31/2023]
Abstract
The interaction between human serum albumin (HSA) and two drugs - amlodipine and propranolol - was investigated using fluorescence, UV absorption and circular dichroism (CD) spectroscopy. In addition, the binding site was established by applying molecular modeling technique. Fluorescence data suggest that amlodipine will quench the intrinsic fluorescence of HSA; whereas propranolol enhances the fluorescence of HSA. The binding constants for the interaction of amlodipine and propranolol with HSA were found to be 3.63×10(5)M(-1) and 2.29×10(4)M(-1), respectively. The percentage of secondary structure feature of each one of the HSA-bound drugs, i.e. the α-helix content, was estimated empirically by circular dichroism. The results indicated that amlodipine causes an increase, and that propranolol leads to a decrease in α-helix content of HSA. The spectroscopic analysis indicates that the binding mechanisms of the two drugs are different from each other. The data obtained by the molecular modeling study indicated that these drugs bind, with different affinity, to different sites located in subdomain IIA and IIIA.
Collapse
|
44
|
Omidvar Z, Parivar K, Sanee H, Amiri-Tehranizadeh Z, Baratian A, Saberi MR, Asoodeh A, Chamani J. Investigations with Spectroscopy, Zeta Potential and Molecular Modeling of the Non-Cooperative Behaviour Between Cyclophosphamide Hydrochloride and Aspirin upon Interaction with Human Serum Albumin: Binary and Ternary Systems from the View Point of Multi-Drug Therapy. J Biomol Struct Dyn 2011; 29:181-206. [DOI: 10.1080/07391102.2011.10507382] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
45
|
Dembitsky VM, Poovarodom S, Leontowicz H, Leontowicz M, Vearasilp S, Trakhtenberg S, Gorinstein S. The multiple nutrition properties of some exotic fruits: Biological activity and active metabolites. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.03.003] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
46
|
Zhang J, Wang XJ, Yan YJ, Xiang WS. Comparative studies on the interaction of genistein, 8-chlorogenistein, and 3',8-dichlorogenistein with bovine serum albumin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:7506-13. [PMID: 21595495 DOI: 10.1021/jf2005194] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Chlorination can significantly enhance the antioxidant and antitumor activity of genistein. In this paper, genistein, 8-chlorogenistein, and 3',8-dichlorogenistein were selected to investigate the binding to bovine serum albumin (BSA) using fluorescence spectroscopy and circular dichroism (CD). The results showed that chlorination, especially at position 3', had significant effects on the binding constant value of chlorinated genistein derivatives to BSA; however, the binding site and the binding number were slightly affected. The thermodynamic parameters indicated that hydrophobic and electrostatic forces played important roles in the binding process and the enhanced binding affinity mainly associated with the increase of the hydrophobicity caused by the chlorine atom substitution. Furthermore, the CD data demonstrated that the conformation of BSA was slightly altered in the presence of genistein, 8-chlorogenistein, and 3',8-dichlorogenistein, with different reduced α-helix contents. The results obtained herein will be of biological significance in toxicology investigation and genistein derivative drug design.
Collapse
Affiliation(s)
- Ji Zhang
- Northeast Agricultural University, Harbin, People's Republic of China
| | | | | | | |
Collapse
|