51
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Wang Z, Tang SF, Hou X. Glutathione peroxidase 6 from Arabidopsis thaliana as potential biomarker for plants exposure assessment to di-(2-ethylhexyl) phthalate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 229:117955. [PMID: 31887676 DOI: 10.1016/j.saa.2019.117955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 12/11/2019] [Accepted: 12/12/2019] [Indexed: 06/10/2023]
Abstract
As a most abundant plasticizer, Di-(2-ethylhexyl) phthalate (DEHP) has been widely used in agriculture with an associated potential toxicity to many species including plants via the production of the excessive reactive oxygen species (ROS). However, the potential toxic mechanisms of the plasticizer DEHP-induced oxidative damage to plants remain unknown. The antioxidant enzyme glutathione peroxidase has been suggested as biomarkers to reflect over excessive oxidative stress. In this study, the effect of DEHP on AtGPX6 was evaluated by multi-spectroscopic techniques and molecular docking method. The fluorescence intensity of AtGPX6 was reduced by the static quenching mechanism upon the addition of DEHP. The predominant forces in complex formation was mainly impelled by hydrogen bonding and Van der Waals forces based on the negative ΔH and ΔS, which was in accordance with the molecular docking results. In addition, the secondary structural changes resulted from the complex formation were investigated in presence of different amounts of DEHP by the combination of fluorescence, UV-vis absorption and Circular dichroism spectra, which revealed the loosening and unfolding of the framework of AtGPX6 accompanied with the enhancement of the hydrophilicity around the tryptophan residues. The exploration of the interaction mechanism of DEHP with AtGPX6 at molecular level would help to evaluate the toxicity of the plasticizers and forecast the related adverse effects on plants.
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Affiliation(s)
- Zhong Wang
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Si-Fu Tang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiaomin Hou
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China.
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52
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Huang S, Li H, Luo H, Yang L, Zhou Z, Xiao Q, Liu Y. Conformational structure variation of human serum albumin after binding interaction with black phosphorus quantum dots. Int J Biol Macromol 2020; 146:405-414. [DOI: 10.1016/j.ijbiomac.2020.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/31/2019] [Accepted: 01/01/2020] [Indexed: 01/02/2023]
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53
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Bullerjahn JT, Sturm S, Kroy K. Non-Markov bond model for dynamic force spectroscopy. J Chem Phys 2020; 152:064104. [PMID: 32061238 DOI: 10.1063/1.5134742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Single-molecule force spectroscopy data are conventionally analyzed using a schematic model, wherein a molecular bond is represented as a virtual particle diffusing in a one-dimensional free-energy landscape. However, this simple and efficient approach is unable to account for the "anomalous" bond-breaking kinetics increasingly observed in force spectroscopy experiments and simulations, e.g., in the form of non-exponential distributions of bond lifetimes under constant load. Here, we show that such characteristic traits arise naturally in a rigorous extension of the one-dimensional theory that accounts for the transient dynamics of a generic set of coupled degrees of freedom. These "hidden modes" affect the reaction dynamics in various ways, depending on their relaxation spectrum and the loading protocol, giving rise, in particular, to apparent static and dynamic disorder. In two complementary asymptotic limits, we are able to find exact analytical expressions for pertinent experimental observables, such as the mean rupture force and the rupture-force distribution. Intriguingly, our asymptotic results become unconditionally exact at high loading rates, thus providing us with a microscopically consistent theory of rapid force spectroscopy that avoids the usual Markov assumption.
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Affiliation(s)
- Jakob Tómas Bullerjahn
- Universität Leipzig, Institut für Theoretische Physik, Postfach 100 920, 04009 Leipzig, Germany
| | - Sebastian Sturm
- Universität Leipzig, Institut für Theoretische Physik, Postfach 100 920, 04009 Leipzig, Germany
| | - Klaus Kroy
- Universität Leipzig, Institut für Theoretische Physik, Postfach 100 920, 04009 Leipzig, Germany
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Śliwa EI, Śliwińska-Hill U, Bażanów B, Siczek M, Kłak J, Smoleński P. Synthesis, Structural, and Cytotoxic Properties of New Water-Soluble Copper(II) Complexes based on 2,9-Dimethyl-1,10-Phenanthroline and Their One Derivative Containing 1,3,5-Triaza-7-Phosphaadamantane-7-Oxide. Molecules 2020; 25:molecules25030741. [PMID: 32046362 PMCID: PMC7037393 DOI: 10.3390/molecules25030741] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 11/16/2022] Open
Abstract
A series of water-soluble copper(II) complexes based on 2,9-dimethyl-1,10-phenanthroline (dmphen) and mixed-ligands, containing PTA=O (1,3,5-triaza-7-phosphaadamantane-7-oxide) have been synthesized and fully characterized. Two types of complexes have been obtained, monocationic [Cu(NO3)(O-PTA=O)(dmphen)][PF6] (1), [Cu(Cl)(dmphen)2][PF6] (2), and neutral [Cu(NO3)2(dmphen)] (3). The solid-state structures of all complexes have been determined by single-crystal X-ray diffraction. Magnetic studies for the complex 1–3 indicated a very weak antiferromagnetic interaction between copper(II) ions in crystal lattice. Complexes were successfully evaluated for their cytotoxic activities on the normal human dermal fibroblast (NHDF) cell line and the antitumor activity using the human lung carcinoma (A549), epithelioid cervix carcinoma (HeLa), colon (LoVo), and breast adenocarcinoma (MCF-7) cell lines. Complexes 1 and 3 revealed lower toxicity to NHDF than A549 and HeLa cells, meanwhile compound 2 appeared to be more toxic to NHDF cell line in comparison to all cancer lines. Additionally, interactions between the complexes and human apo-transferrin (apo-Tf) using fluorescence and circular dichroism (CD) spectroscopy were also investigated. All compounds interacted with apo-transferrin, causing same changes of the protein conformation. Electrostatic interactions dominate in the 1/2 – apo- Tf systems and hydrophobic and ionic interactions in the case of 3.
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Affiliation(s)
- Ewelina I. Śliwa
- Faculty of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland; (E.I.Ś.); (M.S.); (J.K.)
| | - Urszula Śliwińska-Hill
- Department of Analytical Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211 A, 50-566 Wrocław, Poland;
| | - Barbara Bażanów
- Department of Pathology, Wrocław University of Environmental and Life Sciences, ul. Norwida 31, 50-375 Wrocław, Poland;
| | - Miłosz Siczek
- Faculty of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland; (E.I.Ś.); (M.S.); (J.K.)
| | - Julia Kłak
- Faculty of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland; (E.I.Ś.); (M.S.); (J.K.)
| | - Piotr Smoleński
- Faculty of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland; (E.I.Ś.); (M.S.); (J.K.)
- Correspondence: ; Tel.: +48-713-757-225
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Chowdhury T, Bera K, Samanta D, Dolui S, Maity S, Maiti NC, Ghosh PK, Das D. Unveiling the binding interaction of zinc (II) complexes of homologous Schiff‐base ligands on the surface of BSA protein: A combined experimental and theoretical approach. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5556] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tania Chowdhury
- Department of ChemistryUniversity of Calcutta 92, A. P. C. Road Kolkata 700009 India
| | - Kaushik Bera
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Debabrata Samanta
- Department of ChemistryIndian Institute of Kanpur Uttar Pradesh 208016 India
| | - Sandip Dolui
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Suvendu Maity
- Department of ChemistryR. K. Mission Residential College Narendrapur, Kolkata 700103 W.B. India
| | - Nakul C. Maiti
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Prasanta Kumar Ghosh
- Department of ChemistryR. K. Mission Residential College Narendrapur, Kolkata 700103 W.B. India
| | - Debasis Das
- Department of ChemistryUniversity of Calcutta 92, A. P. C. Road Kolkata 700009 India
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56
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Tan L, Xue X, Du J, Xie Y, Tang SF, Hou X. Probing the molecular toxic mechanism of lead (II) ions with glutathione peroxidase 6 from Arabidopsis thaliana. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117597. [PMID: 31629975 DOI: 10.1016/j.saa.2019.117597] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 10/03/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Along with non-biodegradability and accumulation in agricultural soil, lead (II) ions exert considerable harmful effects on plants even at trace amount, especially for the oxidative damages elicited by the lead ions-induced excessive reactive oxygen species (ROS). The glutathione peroxidases were reported to be correspondent with the oxidative stress induced by heavy metals. However, limited data are available about the potential hazardous mechanisms of the lead ions-induced oxidative damage to plants at molecular level. In this study, the harmful impacts of lead ions on Arabidopsis thaliana glutathione peroxidase 6 (AtGPX6) were assessed based on multi-spectroscopic measurements and molecular docking study. The characteristic fluorescence of AtGPX6 was quenched by lead ions with static mechanism at different temperatures. AtGPX6 exhibits a single binding site with lead ions, and then the complex formation was mainly driven by hydrogen bonding interaction and van der Waals forces on account of the negative ΔH and ΔS. The secondary structural changes were observed from the synchronous fluorescence, UV-visible absorption and Circular dichroism spectra, which led to loosen and unfold of the protein framework accompanied by the incremental hydrophobicity around the vicinity of the tryptophan residues. Therefore, this work illustrates the detailed binding mode between lead (II) ions and glutathione peroxidase 6 from Arabidopsis thaliana and the toxic effects on antioxidative defense system induced by lead ions at molecular level.
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Affiliation(s)
- Lingling Tan
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xinguang Xue
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Juan Du
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yanhua Xie
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Si-Fu Tang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xiaomin Hou
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China.
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57
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Dahiya V, Anand BG, Kar K, Pal S. In vitro interaction of organophosphate metabolites with bovine serum albumin: A comparative 1H NMR, fluorescence and molecular docking analysis. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 163:39-50. [PMID: 31973869 DOI: 10.1016/j.pestbp.2019.10.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 10/15/2019] [Accepted: 10/15/2019] [Indexed: 06/10/2023]
Abstract
Since the exposure of organophosphate pesticides are known to cause severe health consequences, it is important to understand the molecular interaction of these pesticides metabolites with vital biomolecules, especially with the proteins. Here, considering bovine serum albumin (BSA) as a model protein, we have examined its interaction with two selected organophosphate metabolites, 3,5,6-trichloro-2-pyridinol (TCPy) and paraoxon methyl (PM). TCPy and PM are resultant metabolites of two most widely used organophosphate pesticides chlorpyrifos and parathion respectively. 1H NMR line broadening, selective spin-lattice relaxation rate measurements, saturation transfer difference (STD) NMR of both TCPy and PM were carried out in the presence and absence of BSA. The obtained values of the affinity index (A), binding constants (Ka) and thermodynamic parameters indicated strong organophosphates-BSA interaction. Further, fluorescence quenching data on TCPy-BSA and PM-BSA interactions strongly supported the NMR results, besides providing the stoichiometry of these complexes. Molecular docking analysis unraveled viable, strong hydrogen bonds and electrostatic interactions in TCPy-BSA and PM-BSA complexes. This study also revealed substantial time-dependent changes in the 1H NMR intensity of PM in the presence of BSA, which suggests faster degradation of PM with increasing protein concentration during protein-metabolite interactions. The hydrolysis is attributed to the esterase-like action of BSA. The result provides key insights into the direct interaction of the organophosphate metabolites with a biologically important carrier protein, serum albumin.
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Affiliation(s)
- Vandana Dahiya
- Department of Chemistry, Indian Institute of Technology Jodhpur, 342011, India
| | - Bibin G Anand
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, 342011, India
| | - Karunakar Kar
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Samanwita Pal
- Department of Chemistry, Indian Institute of Technology Jodhpur, 342011, India.
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58
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Probing the molecular toxic mechanism of di-(2-ethylhexyl) phthalate with glutathione transferase Phi8 from Arabidopsis thaliana. Int J Biol Macromol 2020; 145:165-172. [DOI: 10.1016/j.ijbiomac.2019.12.148] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/17/2019] [Accepted: 12/17/2019] [Indexed: 12/14/2022]
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59
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Islam MM, Barik S, Preeyanka N, Sarkar M. Interaction of Lysozyme with Monocationic and Dicationic Ionic Liquids: Toward Finding a Suitable Medium for Biomacromolecules. J Phys Chem B 2020; 124:961-973. [DOI: 10.1021/acs.jpcb.9b10270] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mullah Muhaiminul Islam
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Sahadev Barik
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Naupada Preeyanka
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Moloy Sarkar
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda, Bhubaneswar 752050, Odisha, India
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60
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Wang Y, Xiong C, Wu Z, Liu Y, Qiu Y, Cheng X, Zhou G. Synthesis, Characterization of a Baicalin‐Strontium(II) Complex and Its BSA‐Binding Activity. ChemistrySelect 2019. [DOI: 10.1002/slct.201902739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yang Wang
- Hubei Key Laboratory of Animal Nutrition and Feed ScienceHubei Collaborative Innovation Center for Animal Nutrition and Feed SafetyWuhan Polytechnic University Wuhan 430023 China
- School of Chemical and Environmental EngineeringWuhan Polytechnic University Wuhan 430023 China
| | - Chunhong Xiong
- Hubei Key Laboratory of Animal Nutrition and Feed ScienceHubei Collaborative Innovation Center for Animal Nutrition and Feed SafetyWuhan Polytechnic University Wuhan 430023 China
| | - Zhongyuan Wu
- Hubei Key Laboratory of Animal Nutrition and Feed ScienceHubei Collaborative Innovation Center for Animal Nutrition and Feed SafetyWuhan Polytechnic University Wuhan 430023 China
| | - Yulan Liu
- Hubei Key Laboratory of Animal Nutrition and Feed ScienceHubei Collaborative Innovation Center for Animal Nutrition and Feed SafetyWuhan Polytechnic University Wuhan 430023 China
| | - Yinsheng Qiu
- Hubei Key Laboratory of Animal Nutrition and Feed ScienceHubei Collaborative Innovation Center for Animal Nutrition and Feed SafetyWuhan Polytechnic University Wuhan 430023 China
| | - Xianzhong Cheng
- Hubei Key Laboratory of Animal Nutrition and Feed ScienceHubei Collaborative Innovation Center for Animal Nutrition and Feed SafetyWuhan Polytechnic University Wuhan 430023 China
| | - Guoqing Zhou
- Hubei Key Laboratory of Animal Nutrition and Feed ScienceHubei Collaborative Innovation Center for Animal Nutrition and Feed SafetyWuhan Polytechnic University Wuhan 430023 China
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61
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de Aguiar HB, McGraw JD, Donaldson SH. Interface-Sensitive Raman Microspectroscopy of Water via Confinement with a Multimodal Miniature Surface Forces Apparatus. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15543-15551. [PMID: 31310142 DOI: 10.1021/acs.langmuir.9b01889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Modern interfacial science is increasingly multidisciplinary. Unique insight into interfacial interactions requires new multimodal techniques for interrogating surfaces with simultaneous complementary physical and chemical measurements. Here, we describe the design and testing of a microscope that incorporates a miniature surface forces apparatus (μSFA) in sphere vs flat geometry for force-distance measurements, while simultaneously acquiring Raman spectra of the confined zone. The simple optical setup isolates independent optical paths for (i) the illumination and imaging of Newton's rings and (ii) Raman scattering excitation and efficient signal collection. We benchmark the methodology by examining Teflon thin films in asymmetric (Teflon-water-glass) and symmetric (Teflon-water-Teflon) configurations. Water is observed near the Teflon-glass interface with nanometer-scale sensitivity in both the distance and Raman signals. We perform chemically resolved, label-free imaging of confined contact regions between Teflon and glass surfaces immersed in water. Remarkably, we estimate that the combined approach enables vibrational spectroscopy with single water monolayer sensitivity within minutes. Altogether, the Raman-μSFA allows exploration of molecular confinement between surfaces with chemical selectivity and correlation with interaction forces.
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Affiliation(s)
- Hilton B de Aguiar
- Département de Physique , Ecole Normale Supérieure/PSL Research University, CNRS , 24 rue Lhomond , 75005 Paris , France
| | - Joshua D McGraw
- Département de Physique , Ecole Normale Supérieure/PSL Research University, CNRS , 24 rue Lhomond , 75005 Paris , France
- Gulliver CNRS UMR 7083 , PSL Research University, ESPCI Paris , 10 rue Vauquelin , 75005 Paris , France
| | - Stephen H Donaldson
- Département de Physique , Ecole Normale Supérieure/PSL Research University, CNRS , 24 rue Lhomond , 75005 Paris , France
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62
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Pentafluorophenyl Platinum(II) Complexes of PTA and its N-Allyl and N-Benzyl Derivatives: Synthesis, Characterization and Biological Activity. MATERIALS 2019; 12:ma12233907. [PMID: 31779206 PMCID: PMC6926962 DOI: 10.3390/ma12233907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 12/28/2022]
Abstract
From the well-known 1,3,5-triaza-phosphaadamantane (PTA, 1a), the novel N-allyl and N-benzyl tetrafuoroborate salts 1-allyl-1-azonia-3,5-diaza-7-phosphaadamantane (APTA(BF4), 1b) and 1-benzyl-1-azonia-3,5-diaza-7-phosphaadamantane (BzPTA(BF4), 1c) were obtained. These phosphines were then allowed to react with (Pt(μ-Cl)(C6F5)(tht))2 (tht = tetrahydrothiophene) affording the water soluble Pt(II) complexes trans-(PtCl(C6F5)(PTA)2) (2a) and its bis-cationic congeners trans-(PtCl(C6F5)(APTA)2)(BF4)2 (2b) and trans-(PtCl(C6F5)(BzPTA)2)(BF4)2 (2c). The compounds were fully characterized by multinuclear NMR, ESI-MS, elemental analysis and (for 2a) also by single crystal X-ray diffraction, which proved the trans configuration of the phosphine ligands. Furthermore, in order to evaluate the cytotoxic activities of all complexes the normal human dermal fibroblast (NHDF) cell culture were used. The antineoplastic activity of the investigated compounds was checked against the human lung carcinoma (A549), epithelioid cervix carcinoma (HeLa) and breast adenocarcinoma (MCF-7) cell cultures. Interactions between the complexes and human serum albumin (HSA) using fluorescence spectroscopy and circular dichroism spectroscopy (CD) were also investigated.
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63
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Ma YJ, Wu JH, Li X, Xu XB, Wang ZY, Wu C, Du M, Song L. Effect of alkyl distribution in pyrazine on pyrazine flavor release in bovine serum albumin solution. RSC Adv 2019; 9:36951-36959. [PMID: 35539035 PMCID: PMC9075160 DOI: 10.1039/c9ra06720e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 10/28/2019] [Indexed: 01/13/2023] Open
Abstract
The flavor release mechanism related to the interaction of aroma compounds with proteins is still unclear. In this study, the interaction of protein with pyrazine homologues, such as 2-methylpyrazine (MP), 2,5-dimethylpyrazine (DP), 2,3,5-trimethylpyrazine (TRP) and 2,3,5,6-tetramethylpyrazine (TEP), was investigated to elucidate the effect of alkyl distribution in a pyrazine ring on its flavor release in bovine serum albumin (BSA) solution (pH 7.4). The results of SPME-GC-MS indicated that methyl distribution in a pyrazine ring significantly affected its release from BSA solution. The pyrazines released from BSA solution with an increasing order of MP, DP, TRP and TEP. The inhibition mechanism of alkyl-pyrazine release was further elucidated by the interaction between alkyl-pyrazines and BSA using multiple spectroscopic methods. The non-covalent interaction between alkyl-pyrazines and BSA was confirmed as the main interaction force by the value of the bimolecular quenching constant (K q > 2 × 1010 L mol-1 s-1). A decrease in the hydrophobicity of the microenvironment between the alkyl-pyrazine and BSA was detected by synchronous fluorescence spectra, which revealed that alkyl-pyrazines were mainly bound on the sites of tyrosine and tryptophan in BSA. The UV-vis absorption spectra and circular dichromatic (CD) spectrum revealed that alkyl-pyrazines could induce polarity and conformation change of BSA. The above results indicated that the structure of the flavor homologues can affect their release in food matrices.
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Affiliation(s)
- Yun-Jiao Ma
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University Dalian 116034 China +86 411 86323262 +86 411 86323453 +86 411 86332275 +86 15942804820
| | - Jian-Hai Wu
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University Dalian 116034 China +86 411 86323262 +86 411 86323453 +86 411 86332275 +86 15942804820
| | - Xiang Li
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University Dalian 116034 China +86 411 86323262 +86 411 86323453 +86 411 86332275 +86 15942804820
| | - Xian-Bing Xu
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University Dalian 116034 China +86 411 86323262 +86 411 86323453 +86 411 86332275 +86 15942804820
| | - Zhen-Yu Wang
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University Dalian 116034 China +86 411 86323262 +86 411 86323453 +86 411 86332275 +86 15942804820
| | - Chao Wu
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University Dalian 116034 China +86 411 86323262 +86 411 86323453 +86 411 86332275 +86 15942804820
| | - Ming Du
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University Dalian 116034 China +86 411 86323262 +86 411 86323453 +86 411 86332275 +86 15942804820
| | - Liang Song
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University Dalian 116034 China +86 411 86323262 +86 411 86323453 +86 411 86332275 +86 15942804820
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64
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Comparable investigation of in vitro interactions between three ruthenium(II) arene complexes with curcumin analogs and ctDNA. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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65
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Synthesis and biological evaluation of flavone-8-acrylamide derivatives as potential multi-target-directed anti Alzheimer agents and investigation of binding mechanism with acetylcholinesterase. Bioorg Chem 2019; 88:102960. [DOI: 10.1016/j.bioorg.2019.102960] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 04/18/2019] [Accepted: 04/28/2019] [Indexed: 01/10/2023]
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66
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Hou X, Tan L, Tang SF. Molecular mechanism study on the interactions of cadmium (II) ions with Arabidopsis thaliana glutathione transferase Phi8. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 216:411-417. [PMID: 30925335 DOI: 10.1016/j.saa.2019.03.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/28/2019] [Accepted: 03/17/2019] [Indexed: 06/09/2023]
Abstract
Accumulation of cadmium ions may result in adverse effects on plant due to the oxidative stress via destructions of antioxidants and antioxidant enzymes. As the core component of the glutathione antioxidant system, glutathione S-transferases (GSTs) have been reported as biomarkers for evaluating the metal-induced oxidative damage to plants, but the potential toxicity and underlying toxic molecular mechanisms remain unknown. This article investigated the molecular interactions of cadmium ions with Arabidopsis thaliana glutathione S-transferase phi8 (AtGSTF8) by multi-spectroscopic techniques and enzyme activity measurements. The intrinsic fluorescence of AtGSTF8 was quenched statically upon the addition of cadmium ions accompanied with the complex formation and structural and conformational alterations from multiple spectroscopic measurements, resulting in deconstructed protein skeleton and microenvironmental alterations around the Tyr and Trp residues. A single binding site was predicted for AtGSTF8 towards cadmium ions and the van der Walls interactions and hydrogen bonds are the major driving forces of the interaction. In addition, the transferase activity changes of AtGSTF8 upon the addition of cadmium ions have been observed. The implementation of this work helps to clarify the mechanism of oxidative damage and antioxidant enzymes response induced by heavy metal accumulation in plant at molecular level.
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Affiliation(s)
- Xiaomin Hou
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China.
| | - Lingling Tan
- Shandong Province Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Si-Fu Tang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China.
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67
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Li B, Lane LA. Probing the biological obstacles of nanomedicine with gold nanoparticles. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2019; 11:e1542. [PMID: 30084539 PMCID: PMC6585966 DOI: 10.1002/wnan.1542] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/09/2018] [Accepted: 07/10/2018] [Indexed: 12/11/2022]
Abstract
Despite massive growth in nanomedicine research to date, the field still lacks fundamental understanding of how certain physical and chemical features of a nanoparticle affect its ability to overcome biological obstacles in vivo and reach its intended target. To gain fundamental understanding of how physical and chemical parameters affect the biological outcomes of administered nanoparticles, model systems that can systematically manipulate a single parameter with minimal influence on others are needed. Gold nanoparticles are particularly good model systems in this case as one can synthetically control the physical dimensions and surface chemistry of the particles independently and with great precision. Additionally, the chemical and physical properties of gold allow particles to be detected and quantified in tissues and cells with high sensitivity. Through systematic biological studies using gold nanoparticles, insights toward rationally designed nanomedicine for in vivo imaging and therapy can be obtained. This article is categorized under: Nanotechnology Approaches to Biology > Nanoscale Systems in Biology.
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Affiliation(s)
- Bin Li
- Department of Biomedical Engineering, College of Engineering and Applied SciencesNanjing UniversityNanjingJiangsuChina
| | - Lucas A. Lane
- Department of Biomedical Engineering, College of Engineering and Applied SciencesNanjing UniversityNanjingJiangsuChina
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68
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Observation of complex formation between l-histidine and heterocyclic compounds in water and aqueous buffer solution using calorimetric and spectroscopic methods. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.092] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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69
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Roufegarinejad L, Amarowicz R, Jahanban-Esfahlan A. Characterizing the interaction between pyrogallol and human serum albumin by spectroscopic and molecular docking methods. J Biomol Struct Dyn 2019; 37:2766-2775. [DOI: 10.1080/07391102.2018.1496854] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Leila Roufegarinejad
- Department of Food Sciences, Tabriz branch, Islamic Azad University, Tabriz, Iran
| | - Ryszard Amarowicz
- Division of Food Sciences, Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences, Olsztyn, Poland
| | - Ali Jahanban-Esfahlan
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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70
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Determination of the small amount of proteins interacting with TiO2 nanotubes by AFM-measurement. Biomaterials 2019; 192:368-376. [DOI: 10.1016/j.biomaterials.2018.11.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 11/07/2018] [Accepted: 11/09/2018] [Indexed: 12/18/2022]
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71
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Mansouri-Torshizi H, Khosravi F, Abdi K, Zareian-Jahromi S. Ordering selected Zn(II), Cu(II), Pd(II) and Co(III) complex compounds: their separately and combinedly antibacterial therapy and DNA-binding studies. J Biomol Struct Dyn 2019; 37:4419-4432. [PMID: 30526379 DOI: 10.1080/07391102.2018.1554509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this study, four Co(III)-, Cu(II)-, Zn(II)- and Pd(II)-based potent antibacterial complexes of formula K3[Co(ox)3]·3H2O (I), [Cu(phen)2Cl]Cl·6.5H2O (II), [Zn(phen)3]Cl2 (III) and [Pd(phen)2](NO3)2 (IV) (where ox is oxalato and phen is 1,10-phenanthroline) were synthesized. They were characterized by elemental analysis, molar conductivity measurements, UV-vis, Fourier transform infrared (FT-IR) and proton nuclear magnetic resonance (1H-NMR) techniques. These metal complexes were ordered in three combination series of I+II, I+II+III and I+II+III+IV. Antibacterial screening for each metal complex and their combinations against Gram-positive and Gram-negative bacteria revealed that all compounds were more potent antibacterial agents against the Gram-negative than those of the Gram-positive bacteria. The four metal complexes showed antibacterial activity in the order I > II > III > IV, and the activity of their combinations followed the order of I+II+III+IV > I+II+III > I+II. The DNA-binding properties of complex (I) and its three combinations were studied using electronic absorption and fluorescence (ethidium bromide displacement assay) spectroscopy. The results obtained indicated that all series interact effectively with calf thymus DNA (CT-DNA). The binding constant (Kb), the number of binding sites (n) and the Stern-Volmer constant (Ksv) were obtained based on the results of fluorescence measurements. The calculated thermodynamic parameters supported that hydrogen bonding and van der Waals forces play a major role in the association of each series of metal complexes with CT-DNA and follow the above-binding affinity order for the series. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Hassan Mansouri-Torshizi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan , Zahedan , Iran
| | - Fatemeh Khosravi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan , Zahedan , Iran.,Department of Chemistry, University of Zabol , Zabol , Iran
| | - Khatereh Abdi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan , Zahedan , Iran
| | - Sareh Zareian-Jahromi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan , Zahedan , Iran
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Hosseini-Kharat M, Zargarian D, Alizadeh AM, Karami K, Saeidifar M, Khalighfard S, Dubrulle L, Zakariazadeh M, Cloutier JP, Sohrabijam Z. In vitro and in vivo antiproliferative activity of organo-nickel SCS-pincer complexes on estrogen responsive MCF7 and MC4L2 breast cancer cells. Effects of amine fragment substitutions on BSA binding and cytotoxicity. Dalton Trans 2018; 47:16944-16957. [PMID: 30450497 DOI: 10.1039/c8dt03079k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
A family of organonickel complexes has been prepared, fully characterized, and tested for their antiproliferative activity against estrogen-responsive human breast cancer cells (MCF7). The three SCS-type pincer ligands HL1, HL2, and HL3 and their corresponding Ni(ii) complexes NiL1, NiL2, and NiL3 have been synthesized and fully characterized, including by single crystal diffraction studies for the complexes. The complexes possess square planar geometry with two symmetrical 5-membered nickellacycles. Fluorescence spectroscopy, circular dichroism measurements, molecular modeling, colorimetric based assay and tumor transplantation studies were used to evaluate the protein binding and antiproliferative activities of these organometallic complexes both in vitro and in vivo. Fluorescence quenching was used to investigate bovine serum albumin (BSA) interaction at different temperatures (293, 303 and 313 K), and the results were analyzed using the classical Stern-Volmer equation, allowing us to propose a dynamic quenching mechanism. Studies in vitro on the antiproliferative activity of the three organonickel complexes against estrogen-responsive human breast cancer cells (MCF7) showed promising antitumor activity for NiL1 containing pyrrolidine fragments. In vivo administration of this compound significantly inhibits tumor growth in estrogen-dependent MC4L2 cancer cells in female BALB/c mice.
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Sood D, Kumar N, Rathee G, Singh A, Tomar V, Chandra R. Mechanistic Interaction Study of Bromo-Noscapine with Bovine Serum Albumin employing Spectroscopic and Chemoinformatics Approaches. Sci Rep 2018; 8:16964. [PMID: 30446713 PMCID: PMC6240080 DOI: 10.1038/s41598-018-35384-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/16/2018] [Indexed: 01/28/2023] Open
Abstract
Bromo-Noscapine (BrNs) is a tubulin-binding cytotoxic agent with significant activity against breast and lung cancer. The mechanistic interaction insight into the binding of bovine serum albumin (BSA) with BrNs can provide critical information about the pharmacodynamics and pharmacokinetics properties. Here, various spectroscopic techniques and computational methods were employed to understand the dynamics of BrNs and BSA interaction. The intrinsic fluorescence of BSA was quenched by BrNs through a static quenching procedure. The stoichiometry of BrNs-BSA complex was 1:1 and binding constant of the complex was in the order of 103 M−1 at 298 K. Based on thermodynamic analysis, it was deduced that binding process of the BrNs with BSA was spontaneous and exothermic, and the major forces between BrNs and BSA were van der waals forces and hydrogen bonding. Moreover, results of FT-IR, CD, UV spectra concluded significant conformational change in BSA on binding with BrNs. The in vitro findings were further confirmed by in silico assays. Molecular docking showed strong interactions with score of −8.08 kcal/mol. Molecular dynamics simulation analysis also suggested the stable binding with lower deviation in RMSD and RMSF values through persistent long simulation run. This study suggests optimal efficiency of diffusion of the BrNs into the bloodstream for the treatment of cancer.
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Affiliation(s)
- Damini Sood
- Drug Discovery & Development Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Neeraj Kumar
- Drug Discovery & Development Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Garima Rathee
- Drug Discovery & Development Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Anju Singh
- Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Vartika Tomar
- Drug Discovery & Development Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Ramesh Chandra
- Drug Discovery & Development Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India. .,Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, 110007, India.
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Yan X, Chen T, Zhang L, Du H. Study of the interactions of forsythiaside and rutin with acetylcholinesterase (AChE). Int J Biol Macromol 2018; 119:1344-1352. [DOI: 10.1016/j.ijbiomac.2018.07.144] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/11/2018] [Accepted: 07/23/2018] [Indexed: 12/12/2022]
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75
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Shinde P, Mohan L, Kumar A, Dey K, Maddi A, Patananan AN, Tseng FG, Chang HY, Nagai M, Santra TS. Current Trends of Microfluidic Single-Cell Technologies. Int J Mol Sci 2018; 19:E3143. [PMID: 30322072 PMCID: PMC6213733 DOI: 10.3390/ijms19103143] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/27/2018] [Accepted: 09/27/2018] [Indexed: 02/07/2023] Open
Abstract
The investigation of human disease mechanisms is difficult due to the heterogeneity in gene expression and the physiological state of cells in a given population. In comparison to bulk cell measurements, single-cell measurement technologies can provide a better understanding of the interactions among molecules, organelles, cells, and the microenvironment, which can aid in the development of therapeutics and diagnostic tools. In recent years, single-cell technologies have become increasingly robust and accessible, although limitations exist. In this review, we describe the recent advances in single-cell technologies and their applications in single-cell manipulation, diagnosis, and therapeutics development.
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Affiliation(s)
- Pallavi Shinde
- Department of Engineering Design, Indian Institute of Technology Madras, Tamil Nadu 600036, India.
| | - Loganathan Mohan
- Department of Engineering Design, Indian Institute of Technology Madras, Tamil Nadu 600036, India.
| | - Amogh Kumar
- Department of Engineering Design, Indian Institute of Technology Madras, Tamil Nadu 600036, India.
| | - Koyel Dey
- Department of Engineering Design, Indian Institute of Technology Madras, Tamil Nadu 600036, India.
| | - Anjali Maddi
- Department of Engineering Design, Indian Institute of Technology Madras, Tamil Nadu 600036, India.
| | - Alexander N Patananan
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, CA 90095, USA.
| | - Fan-Gang Tseng
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu City 30071, Taiwan.
| | - Hwan-You Chang
- Department of Medical Science, National Tsing Hua University, Hsinchu City 30071, Taiwan.
| | - Moeto Nagai
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi 441-8580, Japan.
| | - Tuhin Subhra Santra
- Department of Engineering Design, Indian Institute of Technology Madras, Tamil Nadu 600036, India.
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76
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Wang K, Tang SF, Hou X. Molecular mechanism investigation on the interactions of copper (II) ions with glutathione peroxidase 6 from Arabidopsis thaliana. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:428-433. [PMID: 29894956 DOI: 10.1016/j.saa.2018.05.085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 05/16/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
Accumulation of copper (II) ions in plant leads to the excessive reactive oxygen species (ROS) which attributes to the depletion of the antioxidants in the cell and destruction to antioxidant enzymes. The antioxidant enzyme glutathione peroxidase has been used as biomarkers to reflect metal-induced oxidative stress. However, the underlying toxic mechanisms of the copper ions(II)-induced oxidative damage to plants remain unknown. In the work, a detailed molecular interaction of copper (II) ions with Arabidopsis thaliana glutathione peroxidase 6 (AtGPX6) in relation with poisonous effects of exposure to heavy metal was investigated by multiple spectroscopic techniques. The intrinsic fluorescence of AtGPX6 was quenched upon the addition of copper (II) ions by the combination of static and dynamic quenching mechanisms accompanied by complex formation and conformational changes. A single binding site was revealed for AtGPX6 towards copper ions. The binding process was hydrophobic effect accompanied by positive entropy change and enthalpy change. The secondary structure of AtGPX6 was changed by the addition of copper ions investigated by synchronous fluorescence spectroscopy, ultraviolet-visible absorption spectroscopy and circular dichroism spectroscopy, resulting in loosened and deconstructed protein skeleton and increased hydrophobicity around the Trp residues. This study helps to illuminate the detailed interactions between copper ions and plant glutathione peroxidase and elucidate the destructive mechanism to antioxidative defense system caused by heavy metal exposure at molecular level.
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Affiliation(s)
- Kun Wang
- Key Laboratory of Plant Biotechnology of Shandong Province, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Si-Fu Tang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agriculture University, Qingdao 266109, China
| | - Xiaomin Hou
- Key Laboratory of Plant Biotechnology of Shandong Province, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China.
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77
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Xiao CQ, Lai L, Zhang L, Wang SY, Yuan S, Xu ZQ, Liu Y. Spectroscopic and Isothermal Titration Calorimetry Studies of Binding Interactions Between Carbon Nanodots and Serum Albumins. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0792-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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78
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Rowley A, Parks T, Parks K, Medley K, Cordner A, Yu M. Fluorescence alteration of MPA capped CdSe quantum dots by spontaneous biomarker protein adsorption. Anal Biochem 2018; 555:73-80. [PMID: 29802844 DOI: 10.1016/j.ab.2018.05.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/20/2018] [Accepted: 05/20/2018] [Indexed: 11/17/2022]
Abstract
Quantum dots (QDs) have significant potentials in biomedical applications of bioimaging and biosensing. Spontaneous adsorption of proteins on QDs surface is a common phenomenon, which occurred to serum proteins in biological samples, and has been observed to enhance QDs fluorescence. In this study, fluorescence alteration of 3-mercaptopropionic acid (MPA) capped CdSe quantum dots by four individual biomarker proteins was investigated. By monitoring the fluorescence emission of QDs, the biomarker protein adsorbed spontaneously on QDs surface was recognized and quantified. When alpha fetoprotein (AFP) or heat shock protein 90 alpha (HSP90α) were present, the QDs became brighter. The presence of cytochrome C (CytoC) or lysozyme (Lyz) made the QDs dimmer first, and then brighter. Within five minutes response time all four biomarker proteins were detected individually with the estimated detection limit in the range of 1-10 ng/mL and good linear dynamic ranges. The results suggested that the fluorescence of QDs was responsive to not only serum proteins but also biomarker proteins. The fluorescence response was able to correlate quantitatively with the amount of biomarker proteins in relatively low concentrations. These results provide more information to understand QDs and support their applications in biomedical fields.
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Affiliation(s)
- Amber Rowley
- Department of Chemistry, Utah Valley University, Orem, UT 84058, USA
| | - Tegan Parks
- Department of Chemistry, Utah Valley University, Orem, UT 84058, USA
| | - Kaden Parks
- Department of Chemistry, Utah Valley University, Orem, UT 84058, USA
| | - Kyle Medley
- Department of Biology, Utah Valley University, Orem, UT 84058, USA
| | - Alex Cordner
- Department of Chemistry, Utah Valley University, Orem, UT 84058, USA
| | - Ming Yu
- Department of Chemistry, Utah Valley University, Orem, UT 84058, USA.
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79
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Su W, Li Y, Peng B, Xie J, Li P, Xiao Q, Huang S. Half-sandwich (Cp*)RhCl 2 core complexes containing sulfur donor thiosemicarbazones: Synthesis, cytotoxic activity and human serum albumin binding studies. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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80
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Basha SJ, Mohan P, Yeggoni DP, Babu ZR, Kumar PB, Rao AD, Subramanyam R, Damu AG. New Flavone-Cyanoacetamide Hybrids with a Combination of Cholinergic, Antioxidant, Modulation of β-Amyloid Aggregation, and Neuroprotection Properties as Innovative Multifunctional Therapeutic Candidates for Alzheimer’s Disease and Unraveling Their Mechanism of Action with Acetylcholinesterase. Mol Pharm 2018; 15:2206-2223. [DOI: 10.1021/acs.molpharmaceut.8b00041] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shaik Jeelan Basha
- Department of Chemistry, Yogi Vemana University, Andhrapradesh, Kadapa 516003, India
| | - Penumala Mohan
- Department of Chemistry, Yogi Vemana University, Andhrapradesh, Kadapa 516003, India
| | - Daniel Pushparaju Yeggoni
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad 500046, India
| | - Zinka Raveendra Babu
- Department of Chemistry, Yogi Vemana University, Andhrapradesh, Kadapa 516003, India
| | - Palaka Bhagath Kumar
- Centre for Bioinformatics, School of Life Sciences, Pondicherry Central University, Puducherry 605014, India
| | - Ampasala Dinakara Rao
- Centre for Bioinformatics, School of Life Sciences, Pondicherry Central University, Puducherry 605014, India
| | - Rajagopal Subramanyam
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad 500046, India
| | - Amooru Gangaiah Damu
- Department of Chemistry, Yogi Vemana University, Andhrapradesh, Kadapa 516003, India
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81
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Manjubaashini N, Kesavan MP, Rajesh J, Daniel Thangadurai T. Multispectroscopic and bioimaging approach for the interaction of rhodamine 6G capped gold nanoparticles with bovine serum albumin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 183:374-384. [PMID: 29763760 DOI: 10.1016/j.jphotobiol.2018.05.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/30/2018] [Accepted: 05/04/2018] [Indexed: 02/06/2023]
Abstract
Binding interaction of Bovine Serum Albumin (BSA) with newly prepared rhodamine 6G-capped gold nanoparticles (Rh6G-Au NPs) under physiological conditions (pH 7.2) was investigated by a wide range of photophysical techniques. Rh6G-Au NPs caused the static quenching of the intrinsic fluorescence of BSA that resulted from the formation of ground-state complex between BSA and Rh6G-Au NPs. The binding constant from fluorescence quenching method (Ka = 1.04 × 104 L mol-1; LoD = 14.0 μM) is in accordance with apparent association constant (Kapp = 1.14 × 101 M-1), which is obtained from absorption spectral studies. Förster resonance energy transfer (FRET) efficiency between the tryptophan (Trp) residue of BSA and fluorophore of Rh6G-Au NPs during the interaction was calculated to be 90%. The free energy change (ΔG = -23.07 kJ/mol) of BSA-Rh6G-Au NPs complex was calculated based on modified Stern-Volmer Plot. The time-resolved fluorescence analysis confirmed that quenching of BSA follows static mechanism through the formation of ground state complex. Furthermore, synchronous and three-dimensional fluorescence measurement, Raman spectral analysis and Circular Dichroism spectrum results corroborate the strong binding between Rh6G-Au NPs and BSA, which causes the conformational changes on BSA molecule. In addition, fluorescence imaging experiments of BSA in living human breast cancer (HeLa) cells was successfully demonstrated, which articulated the value of Rh6G-Au NPs practical applications in biological systems.
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Affiliation(s)
- N Manjubaashini
- Department of Nanoscience and Technology, Sri Ramakrishana Engineering College, Coimbatore, Tamilnadu 641 022, India
| | | | | | - T Daniel Thangadurai
- Department of Nanoscience and Technology, Sri Ramakrishana Engineering College, Coimbatore, Tamilnadu 641 022, India.
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82
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Jiao Q, Wang R, Jiang Y, Liu B. Study on the interaction between active components from traditional Chinese medicine and plasma proteins. Chem Cent J 2018; 12:48. [PMID: 29728878 PMCID: PMC5935606 DOI: 10.1186/s13065-018-0417-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 04/24/2018] [Indexed: 02/06/2023] Open
Abstract
Traditional Chinese medicine (TCM), as a unique form of natural medicine, has been used in Chinese traditional therapeutic systems over two thousand years. Active components in Chinese herbal medicine are the material basis for the prevention and treatment of diseases. Research on drug-protein binding is one of the important contents in the study of early stage clinical pharmacokinetics of drugs. Plasma protein binding study has far-reaching influence on the pharmacokinetics and pharmacodynamics of drugs and helps to understand the basic rule of drug effects. It is important to study the binding characteristics of the active components in Chinese herbal medicine with plasma proteins for the medical science and modernization of TCM. This review summarizes the common analytical methods which are used to study the active herbal components-protein binding and gives the examples to illustrate their application. Rules and influence factors of the binding between different types of active herbal components and plasma proteins are summarized in the end. Finally, a suggestion on choosing the suitable technique for different types of active herbal components is provided, and the prospect of the drug-protein binding used in the area of TCM research is also discussed.
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Affiliation(s)
- Qishu Jiao
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Rufeng Wang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Yanyan Jiang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Bin Liu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, 102488, China.
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83
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Shang C, Zhang Y, You X, Guo N, Wang Y, Fan Y, Liu W. The effect of 7,8,4´-trihydroxyflavone on tyrosinase activity and conformation: Spectroscopy and docking studies. LUMINESCENCE 2018; 33:681-691. [DOI: 10.1002/bio.3464] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/20/2017] [Accepted: 01/11/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Chao Shang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Yongkui Zhang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Xue You
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Nihong Guo
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Yang Wang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Yang Fan
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Wenbin Liu
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
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84
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Mathan Kumar S, Kesavan MP, Vinoth Kumar GG, Sankarganesh M, Chakkaravarthi G, Rajagopal G, Rajesh J. New heteroleptic Zn(II) complexes of thiosemicarbazone and diimine Co-Ligands: Structural analysis and their biological impacts. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.070] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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85
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β-Glucosidase from Thermotoga naphthophila RKU-10 for exclusive synthesis of galactotrisaccharides: Kinetics and thermodynamics insight into reaction mechanism. Food Chem 2018; 240:422-429. [DOI: 10.1016/j.foodchem.2017.07.155] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 07/26/2017] [Accepted: 07/28/2017] [Indexed: 12/24/2022]
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86
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Huang S, Xie J, Su W, Liu Y, Wang X, Hu B, Xiao Q. Comparative investigation of interactions between two ruthenium(II) arene PTA type complexes with curcuminoid ligands and human serum albumin. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.10.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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87
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Huang S, Xie J, Cui J, Liu L, Liang Y, Liu Y, Xiao Q. Comparative investigation of binding interactions between three steroidal compounds and human serum albumin: Multispectroscopic and molecular modeling techniques. Steroids 2017; 128:136-146. [PMID: 28962852 DOI: 10.1016/j.steroids.2017.09.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 09/10/2017] [Accepted: 09/23/2017] [Indexed: 02/06/2023]
Abstract
Steroidal compounds have attracted great attentions in biomedical and pharmacological areas. The investigation of structural influences during protein-compound interactions helps in understanding both the biological effects and the mechanism behind bioactivities of steroidal compounds. Herein, the structural influences of three steroidal complexes were investigated based on their binding interactions with human serum albumin (HSA) by multispectroscopic methods and molecular modeling techniques. Three steroidal compounds bonded with HSA to form three HSA-compound complexes, and van der Waals force and hydrogen bond played major roles in stabilizing these complexes. Detailed binding conformation of three steroidal compounds and HSA was further investigated by molecular modeling techniques. The changes of microenvironments and conformations of HSA were significant and the biological activity of HSA was weakened in the present of three steroidal compounds. The space steric hindrance was responsible for differences in the binding interactions between HSA and three steroidal compounds. These results provided the molecular understanding of binding interactions of protein with steroidal compounds and the strategy for research of structural influences.
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Affiliation(s)
- Shan Huang
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Jiangning Xie
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Jianguo Cui
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning 530001, PR China.
| | - Liang Liu
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Yu Liang
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Yi Liu
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Qi Xiao
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning 530001, PR China.
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88
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Yu H, Zhang W, Yu Q, Huang FP, Bian HD, Liang H. Ni(II) Complexes with Schiff Base Ligands: Preparation, Characterization, DNA/Protein Interaction and Cytotoxicity Studies. Molecules 2017; 22:molecules22101772. [PMID: 29064419 PMCID: PMC6151616 DOI: 10.3390/molecules22101772] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 10/16/2017] [Indexed: 12/20/2022] Open
Abstract
In this study, two Ni(II) complexes, namely [Ni(HL1)2(OAc)2] (1) and [Ni(L2)2] (2) (where HL1 and HL2 are (E)-1-((1-(2-hydroxyethyl)-1H-pyrazol-5-ylimino)methyl)-naphthalen-2-ol) and (E)-ethyl-5-((2-hydroxynaphthalen-1-yl)methyleneamino)-1-methyl-1H-pyrazole-4-carboxylate, respectively), were synthesized and characterized by X-ray crystallography, Electrospray Ionization Mass Spectrometry (ESI-MS), elemental analysis, and IR. Their uptake in biological macromolecules and cancer cells were preliminarily investigated through electronic absorption (UV-Vis), circular dichroism (CD) and fluorescence quenching measurements. Bovine serum albumin (BSA) interaction experiments were investigated by spectroscopy which showed that the complexes and ligands could quench the intrinsic fluorescence of BSA through an obvious static quenching process. The spectroscopic studies indicated that these complexes could bind to DNA via groove, non-covalent, and electrostatic interactions. Furthermore, in vitro methyl thiazolyl tetrazolium (MTT) assays and Annexin V/PI flow cytometry experiments were performed to assess the antitumor capacity of the complexes against eight cell lines. The results show that both of the complexes possess reasonable cytotoxicities.
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Affiliation(s)
- Hui Yu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, China.
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
| | - Wei Zhang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
| | - Qing Yu
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
| | - Fu-Ping Huang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
| | - He-Dong Bian
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, China.
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
| | - Hong Liang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
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89
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Xiao Q, Liang Y, Liu Y, Lu S, Huang S. Comparison of molecular interactions of Ag 2 Te and CdTe quantum dots with human serum albumin by spectroscopic approaches. LUMINESCENCE 2017; 33:181-189. [PMID: 28905512 DOI: 10.1002/bio.3391] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 05/22/2017] [Accepted: 08/01/2017] [Indexed: 12/23/2022]
Abstract
Ag2 Te quantum dots (QDs) have attracted great attention in biological applications due to their superior photoluminescence qualities and good biocompatibility, but their potential biotoxicity at a molecular biology level has been rarely discussed. In order to better understand the basic behavior of Ag2 Te QDs in biological systems and compare their biotoxicity to cadmium-containing QDs, a series of spectroscopic measurements was applied to reveal the molecular interactions of Ag2 Te QDs and CdTe QDs with human serum albumin (HSA). Ag2 Te QDs and CdTe QDs statically quenched the intrinsic fluorescence of HSA by electrostatic interactions, but Ag2 Te QDs exhibited weaker quenching ability and weaker binding ability compared with CdTe QDs. Electrostatic interactions were the main binding forces and Sudlow's site I was the primary binding site during these binding interactions. Furthermore, micro-environmental and conformational variations of HSA were induced by their binding interactions with two QDs. Ag2 Te QDs caused less secondary structural and conformational change in HSA, illustrating the lower potential biotoxicity risk of Ag2 Te QDs. Our results systematically indicated the molecular binding mechanism of Ag2 Te QDs with HSA, which provided important information for possible toxicity risk of these cadmium-free QDs to human health.
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Affiliation(s)
- Qi Xiao
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning, People's Republic of China.,State Key Laboratory of Virology, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Yu Liang
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning, People's Republic of China
| | - Yi Liu
- State Key Laboratory of Virology, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Shuangyan Lu
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning, People's Republic of China
| | - Shan Huang
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning, People's Republic of China.,State Key Laboratory of Virology, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, People's Republic of China
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90
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Natural alkaloid Luotonin A and its affixed acceptor molecules: Serum albumin binding studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 173:499-507. [DOI: 10.1016/j.jphotobiol.2017.06.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/13/2017] [Accepted: 06/23/2017] [Indexed: 02/07/2023]
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91
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Cortés A, Coral J, McLachlan C, Benítez R, Pinilla L. Planar molecular arrangements aid the design of MHC class II binding peptides. Mol Biol 2017. [DOI: 10.1134/s002689331702008x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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92
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Yin MM, Dong P, Chen WQ, Xu SP, Yang LY, Jiang FL, Liu Y. Thermodynamics and Mechanisms of the Interactions between Ultrasmall Fluorescent Gold Nanoclusters and Human Serum Albumin, γ-Globulins, and Transferrin: A Spectroscopic Approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5108-5116. [PMID: 28489408 DOI: 10.1021/acs.langmuir.7b00196] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Noble metal nanoclusters (NCs) show great promise as nanoprobes for bioanalysis and cellular imaging in biological applications due to ultrasmall size, good photophysical properties, and excellent biocompatibility. In order to achieve a comprehensive understanding of possible biological implications, a series of spectroscopic measurements were conducted under different temperatures to investigate the interactions of Au NCs (∼1.7 nm) with three model plasmatic proteins (human serum albumin (HSA), γ-globulins, and transferrin). It was found that the fluorescence quenching of HSA and γ-globulins triggered by Au NCs was due to dynamic quenching mechanism, while the fluorescence quenching of transferrin by Au NCs was a result of the formation of a Au NC-transferrin complex. The apparent association constants of the Au NCs bound to HSA, γ-globulins, and transferrin demonstrated no obvious difference. Thermodynamic studies demonstrated that the interaction between Au NCs and HSA (or γ-globulins) was driven by hydrophobic forces, while the electrostatic interactions played predominant roles in the adsorption process for transferrin. Furthermore, it was proven that Au NCs had no obvious interference in the secondary structures of these three kinds of proteins. In turn, these three proteins had a minor effect on the fluorescence intensity of Au NCs, which made fluorescent Au NCs promising in biological applications owing to their chemical and photophysical stability. In addition, by comparing the interactions of small molecules, Au NCs, and large nanomaterials with serum albumin, it was found that the binding constants were gradually increased with the increase of particle size. This work has elucidated the interaction mechanisms between nanoclusters and proteins, and shed light on a new interaction mode different from the protein corona on the surface of nanoparticles, which will highly contribute to the better design and applications of fluorescent nanoclusters.
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Affiliation(s)
- Miao-Miao Yin
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
| | - Ping Dong
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
| | - Wen-Qi Chen
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
| | - Shi-Ping Xu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
| | - Li-Yun Yang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
- College of Chemistry and Material Science, Guangxi Teachers Education University , Nanning 530001, People's Republic of China
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
- College of Chemistry and Material Science, Guangxi Teachers Education University , Nanning 530001, People's Republic of China
- College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology , Wuhan 430081, People's Republic of China
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93
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Ratnesh RK, Mehata MS. Investigation of biocompatible and protein sensitive highly luminescent quantum dots/nanocrystals of CdSe, CdSe/ZnS and CdSe/CdS. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 179:201-210. [PMID: 28242450 DOI: 10.1016/j.saa.2017.02.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 02/10/2017] [Accepted: 02/14/2017] [Indexed: 06/06/2023]
Abstract
The size and shape dependent semiconductor quantum dots (0D nanoparticles) with color tunability demonstrating significant influence in a biological system and considered as ideal probes. Here, a non-coordinated colloidal approach was used for the synthesis of CdSe, CdSe/ZnS and CdSe/CdS core-shell quantum dots (QDs) of 3-4nm. The synthesized nanocrystals show a high crystallinity, examined by X-ray diffraction (XRD) and high-resolution electron microscopy (HRTEM). The core-shell semiconductor QDs exhibit stronger photoluminescence (PL) as compared to the core QDs. The strong PL with small full-width half maximum (FWHM) indicates that the prepared QDs have a nearly uniform size distribution and well dispersibility. The quantum yield (QY) of core-shell QDs increases due to the surface passivation. Further, the PL of BSA is quenched strongly by the presence of core-shell QDs and follows the well-known Stern-Volmer (S-V) relation, whereas the PL lifetime does not follow the S-V relation, demonstrating that the observed quenching is predominantly static in nature. Among CdSe core, CdSe/ZnS and CdSe/CdS core-shell QDs, the CdSe/ZnS QDs shows the least cytotoxicity and most biocompatibility. Thus, the prepared core-shell QDs are biocompatible and exhibit strong sensing ability.
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Affiliation(s)
- R K Ratnesh
- Laser-Spectroscopy Laboratory, Department of Applied Physics, Delhi Technological University, Bawana Road, Delhi 110042, India
| | - Mohan Singh Mehata
- Laser-Spectroscopy Laboratory, Department of Applied Physics, Delhi Technological University, Bawana Road, Delhi 110042, India.
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94
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Raza M, Ahmad A, Yue F, Khan Z, Jiang Y, Wei Y, Raza S, He WW, Khan FU, Qipeng Y. Biophysical and molecular docking approaches for the investigation of biomolecular interactions between amphotericin B and bovine serum albumin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 170:6-15. [DOI: 10.1016/j.jphotobiol.2017.03.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 03/20/2017] [Accepted: 03/21/2017] [Indexed: 12/16/2022]
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95
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An X, Zhao J, Cui F, Qu G. The investigation of interaction between Thioguanine and human serum albumin by fluorescence and modeling. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.06.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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96
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Investigating the interaction of juglone (5-hydroxy-1, 4-naphthoquinone) with serum albumins using spectroscopic and in silico methods. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1094-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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97
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Chakraborty C, Mallick B, Sharma AR, Sharma G, Jagga S, Doss CGP, Nam JS, Lee SS. Micro-Environmental Signature of The Interactions between Druggable Target Protein, Dipeptidyl Peptidase-IV, and Anti-Diabetic Drugs. CELL JOURNAL 2017; 19:65-83. [PMID: 28367418 PMCID: PMC5241519 DOI: 10.22074/cellj.2016.4865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 04/04/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Druggability of a target protein depends on the interacting micro-environment between the target protein and drugs. Therefore, a precise knowledge of the interacting micro-environment between the target protein and drugs is requisite for drug discovery process. To understand such micro-environment, we performed in silico interaction analysis between a human target protein, Dipeptidyl Peptidase-IV (DPP-4), and three anti-diabetic drugs (saxagliptin, linagliptin and vildagliptin). MATERIALS AND METHODS During the theoretical and bioinformatics analysis of micro-environmental properties, we performed drug-likeness study, protein active site predictions, docking analysis and residual interactions with the protein-drug interface. Micro-environmental landscape properties were evaluated through various parameters such as binding energy, intermolecular energy, electrostatic energy, van der Waals'+H-bond+desolvo energy (EVHD) and ligand efficiency (LE) using different in silico methods. For this study, we have used several servers and software, such as Molsoft prediction server, CASTp server, AutoDock software and LIGPLOT server. RESULTS Through micro-environmental study, highest log P value was observed for linagliptin (1.07). Lowest binding energy was also observed for linagliptin with DPP-4 in the binding plot. We also identified the number of H-bonds and residues involved in the hydrophobic interactions between the DPP-4 and the anti-diabetic drugs. During interaction, two H-bonds and nine residues, two H-bonds and eleven residues as well as four H-bonds and nine residues were found between the saxagliptin, linagliptin as well as vildagliptin cases and DPP-4, respectively. CONCLUSION Our in silico data obtained for drug-target interactions and micro-environmental signature demonstrates linagliptin as the most stable interacting drug among the tested anti-diabetic medicines.
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Affiliation(s)
- Chiranjib Chakraborty
- Institute for Skeletal Aging and Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital,
Chuncheon, Korea
- Department of Bio-Informatics, School of Computer and Information Sciences, Galgotias University, Greater Noida, India
| | - Bidyut Mallick
- Departments of Physics, Galgotias College of Engineering and Technology, Greater Noida, India
| | - Ashish Ranjan Sharma
- Institute for Skeletal Aging and Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital,
Chuncheon, Korea
| | - Garima Sharma
- Institute for Skeletal Aging and Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital,
Chuncheon, Korea
| | - Supriya Jagga
- Institute for Skeletal Aging and Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital,
Chuncheon, Korea
| | - C George Priya Doss
- Department of Integrative Biology, VIT University, Vellore Tamil Nadu, India
| | - Ju-Suk Nam
- Institute for Skeletal Aging and Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital,
Chuncheon, Korea
| | - Sang-Soo Lee
- Institute for Skeletal Aging and Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital,
Chuncheon, Korea
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98
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Xu Y, Hong T, Chen X, Ji Y. Affinity capillary electrophoresis and fluorescence spectroscopy for studying enantioselective interactions between omeprazole enantiomer and human serum albumin. Electrophoresis 2017; 38:1366-1373. [DOI: 10.1002/elps.201600375] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 02/10/2017] [Accepted: 02/13/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Yujing Xu
- Department of Analytical Chemistry; P.R. China Pharmaceutical University; Nanjing P.R. China
- Key Laboratory of Drug Quality Control and Pharmacovigilance; Ministry of Education; Nanjing P.R. China
| | - Tingting Hong
- Department of Analytical Chemistry; P.R. China Pharmaceutical University; Nanjing P.R. China
- Key Laboratory of Drug Quality Control and Pharmacovigilance; Ministry of Education; Nanjing P.R. China
| | - Xueping Chen
- Department of Analytical Chemistry; P.R. China Pharmaceutical University; Nanjing P.R. China
- Key Laboratory of Drug Quality Control and Pharmacovigilance; Ministry of Education; Nanjing P.R. China
| | - Yibing Ji
- Department of Analytical Chemistry; P.R. China Pharmaceutical University; Nanjing P.R. China
- Key Laboratory of Drug Quality Control and Pharmacovigilance; Ministry of Education; Nanjing P.R. China
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99
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Shokohi-Pour Z, Chiniforoshan H, Sabzalian MR, Esmaeili SA, Momtazi-Borojeni AA. Cobalt (II) complex with novel unsymmetrical tetradentate Schiff base (ON) ligand: in vitro cytotoxicity studies of complex, interaction with DNA/protein, molecular docking studies, and antibacterial activity. J Biomol Struct Dyn 2017; 36:532-549. [PMID: 28271957 DOI: 10.1080/07391102.2017.1287006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
[C20H17N3O2] and cobalt (II) complex [Co(L2)(MeOH)2].ClO4, (L2 = 4-((E)-1-((2-(((E)-pyridin-2-ylmethylene) amino) phenyl) imino) ethyl) benzene-1, 3-diol) novel Schiff base has been synthesiszed and chracterized by Fourier transform infrared, UV-vis, 1H-NMR spectroscopy, and elemental analysis techniques. The interaction of Co(II) complex with DNA and BSA was investigated by electronic absorption spectroscopy, fluorescence spectroscopy, circular dichroism, and thermal denaturation studies. Our experiments indicate that this complex could strongly bind to CT-DNA via minor groove mechanism. In addition, fluorescence spectrometry of BSA with the complex showed that the fluorescence quenching mechanism of BSA was of static type. The complex exhibited significant in vitro cytotoxicity against three human cancer cell lines (JURKAT, SKOV3, and U87). The molecular docking experiment effectively proved the binding of complex to DNA and BSA. Finally, antibacterial assay over gram-positive and gram-negative pathogenic bacterial strains was studied.
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Affiliation(s)
- Zahra Shokohi-Pour
- a Department of Chemistry , Isfahan University of Technology , Isfahan 84156-83111 , Iran
| | - Hossein Chiniforoshan
- a Department of Chemistry , Isfahan University of Technology , Isfahan 84156-83111 , Iran
| | - Mohammad R Sabzalian
- b Department of Agronomy and Plant Breeding , College of Agriculture, Isfahan University of Technology , Isfahan 84156-83111 , Iran
| | - Seyed-Alireza Esmaeili
- c Student Research Committee, Department of Immunology and Allergy , Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences , Mashhad , Iran
| | - Amir Abbas Momtazi-Borojeni
- d Student Research Committee, Department of Medical Biotechnology , Nanotechnology Research Center, School of Medicine, Mashhad University of Medical Sciences , Mashhad , Iran
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100
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Comparative Interactions of Dihydroquinazolin Derivatives with Human Serum Albumin Observed via Multiple Spectroscopy. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7020200] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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