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Ngueanngam N, Jityuti B, Patnin S, Boonsri P, Makarasen A, Buranaprapuk A. Multiple spectroscopic and computational studies on binding interaction of 2-phenylamino-4-phenoxyquinoline derivatives with bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123948. [PMID: 38309006 DOI: 10.1016/j.saa.2024.123948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 01/15/2024] [Accepted: 01/21/2024] [Indexed: 02/05/2024]
Abstract
Binding characteristics of potent non-nucleoside HIV-1 reverse transcriptase inhibitors, 4-(2',6'-dimethyl-4'-formylphenoxy)-2-(5″-cyanopyridin-2″ylamino) quinoline (1) and 4-(2',6'-dimethyl-4'-cyanophenoxy)-2-(5″-cyanopyridin-2″ylamino) quinoline (2), to bovine serum albumin (BSA) under simulative physiological conditions were investigated by multiple spectroscopic and computational methods. The experimental results demonstrated that (1) and (2) bound to BSA at site III (subdomain IB), and quenched BSA fluorescence through a static quenching process. The binding interaction of (1) or (2) to BSA forms stable complexes with the binding constants (Kb) at the level of 104 L/mol and the number of binding site was determined to be 1 for both systems, indicating that new synthesized compounds occupied one site in BSA with moderate binding affinities. Based on the analysis of the thermodynamic parameters, it can be indicated that the main binding forces for interaction between BSA and both compounds were hydrogen bonding and van der Waals force. Synchronous fluorescence results revealed that the interaction of two compounds with BSA led to modifications in the microenvironment surrounding tryptophan residue of BSA. Circular dichroism spectra demonstrated alterations in the secondary structure of BSA induced by (1) and (2). Moreover, the experimental data of molecular docking and molecular dynamics (MD) simulations supported the results obtained from multiple spectroscopic techniques, confirming the binding interactions between both compounds and BSA.
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Affiliation(s)
- Natchaphon Ngueanngam
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand
| | - Benchawan Jityuti
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand
| | - Suwicha Patnin
- Department of Chemistry, Laboratory of Organic Synthesis, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand
| | - Pornthip Boonsri
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand
| | - Arthit Makarasen
- Department of Chemistry, Laboratory of Organic Synthesis, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand
| | - Apinya Buranaprapuk
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand.
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Bhatt S, Meena N, Kumar M, Bhuvanesh N, Kumar A, Sharma AK, Joshi H. Design and Syntheses of Ruthenium ENE (E = S, Se) Pincer Complexes: A Versatile System for Catalytic and Biological Applications. Chem Asian J 2022; 17:e202200736. [PMID: 36065146 DOI: 10.1002/asia.202200736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/24/2022] [Indexed: 11/09/2022]
Abstract
This report describes synthesis of two ruthenium(II) ENE pincer complexes (E = S, C1 and E = Se, C2 ) by the reaction of bis(2-(phenylchalcogenyl)ethyl)amine ( L1 , L2 ) with RuCl 2 (PPh 3 ) 3 . The complexes were characterized with the help of 1 H and 13 C{ 1 H} NMR, FTIR, HRMS, cyclic voltammetry and elemental analysis techniques. The structure and bonding mode of ligand with ruthenium in C2 was established with the help of single crystal X-ray diffraction. The complex showed distorted octahedral geometry with two chlorine atoms trans to each other. The Ru-Se bond distances (Å) are 2.4564(3)-2.4630(3), Ru-N distance is 2.181(2), Ru-P distance is 2.2999(6), and Ru-Cl distances are 2.4078(6)-2.4314(6). The complexes showed good to excellent catalytic activity for the N -alkylation of 1,2-phenylenediamine with benzyl alcohol derivatives to synthesize 1,2-disubstituted benzimidazole derivatives. The complexes were also found to be efficient for aerobic oxidation of benzyl alcohols to corresponding aldehydes which are precursors to the bisimines generated in situ during the synthesis of 1,2-disubstituted benzimidazole derivatives. Complex C2 where selenium is coordinated with ruthenium was found to be more efficient as compared to sulfur coordinated ruthenium complex C1 . Since ruthenium complexes are getting increasing attention for developing new anticancer agents, the preliminary studies like binding behavior of both the complexes towards CT-DNA were studied by competitive binding with ethidium bromide (EthBr) using emission spectroscopy. In addition, the interactions of C1-C2 were also studied with bovine serum albumin (BSA) using steady state fluorescence quenching and synchronous fluorescence studies. A good stability of Ru(II) state was observed by cyclic voltammetric studies of C1-C2 . Overall these molecules are good examples of bio-organometallic systems for catalytic and biological applications.
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Affiliation(s)
| | - Neha Meena
- BITS Pilani: Birla Institute of Technology and Science, Chemistry, INDIA
| | - Mukesh Kumar
- Central University of Rajasthan, Chemistry, INDIA
| | - Nattamai Bhuvanesh
- Texas A&M University College Station: Texas A&M University, Chemistry, INDIA
| | - Anil Kumar
- BITS: Birla Institute of Technology & Science Pilani, Chemistry, INDIA
| | | | - Hemant Joshi
- Central University of Rajasthan, Ajmer, Chemistry, Department of Chemistry, Central University of Rajasthan, 305817, Bandarsindri, Ajmer, INDIA
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Ovung A, Bhattacharyya J. Sulfonamide drugs: structure, antibacterial property, toxicity, and biophysical interactions. Biophys Rev 2021; 13:259-272. [PMID: 33936318 PMCID: PMC8046889 DOI: 10.1007/s12551-021-00795-9] [Citation(s) in RCA: 122] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/03/2021] [Indexed: 12/11/2022] Open
Abstract
Sulfonamide (or sulphonamide) functional group chemistry (SN) forms the basis of several groups of drug. In vivo sulfonamides exhibit a range of pharmacological activities, such as anti-carbonic anhydrase and anti-t dihydropteroate synthetase allowing them to play a role in treating a diverse range of disease states such as diuresis, hypoglycemia, thyroiditis, inflammation, and glaucoma. Sulfamethazine (SMZ) is a commonly used sulphonamide drug in veterinary medicine that acts as an antibacterial compound to treat livestock diseases such as gastrointestinal and respiratory tract infections. Sulfadiazine (SDZ) is another frequently employed sulphonamide drug that is used in combination with the anti-malarial drug pyrimethamine to treat toxoplasmosis in warm-blooded animals. This study explores the research findings and the work behaviours of SN (SMZ and SDZ) drugs. The areas covered include SN drug structure, SN drug antibacterial activity, SN drug toxicity, and SN environmental toxicity.
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Affiliation(s)
- Aben Ovung
- Department of Chemistry, National Institute of Technology Nagaland, Chumukedima, Dimapur, 797103 India
| | - Jhimli Bhattacharyya
- Department of Chemistry, National Institute of Technology Nagaland, Chumukedima, Dimapur, 797103 India
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Jain S, Bhar K, Bandyopadhayaya S, Singh VK, Mandal CC, Tapryal S, Sharma AK. Development, evaluation and effect of anionic co-ligand on the biological activity of benzothiazole derived copper(II) complexes. J Inorg Biochem 2020; 210:111174. [PMID: 32652261 DOI: 10.1016/j.jinorgbio.2020.111174] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/28/2020] [Accepted: 06/28/2020] [Indexed: 01/08/2023]
Abstract
Research on development of novel metal based anti-cancer agents continues with its popularity among bioinorganic community. Benzothiazole, an important heterocyclic pharmacophore, was chosen as a valuable and useful scaffold for the synthesis of novel copper(II) complexes. Three new copper(II) complexes obtained from the synthesis of newly synthesized benzothiazole based N-(benzo[d]thiazol-2-ylmethyl)-N-methyl-2-(pyridin-2-yl)ethan-1-amine (btzpy) ligand with CuCl2 [Cu(btzpy)Cl2] (1), Cu(NCS)2 [Cu(btzpy)(NCS)2] (2), and Cu(NO3)2 [Cu(btzpy)(NO3)(H2O)]NO3 (3) were isolated and characterized by physical and spectroscopic measurements, including single-crystal X-ray structures. The interaction of complexes 1 and 3 with calf thymus (CT)-DNA was investigated using ethidium bromide fluorescence quenching assay and weak intercalation with KSV values of 9.8 × 102 M-1 and 8.2 × 102 M-1, respectively was observed. All three complexes have shown DNA cleavage of supercoiled plasmid DNA forming single nicked and double nicked forms in the presence of external reducing agents like 3-mercaptopropionic acid (3-MPA) and ascorbic acid. The water-soluble complexes 1 and 3 also show prominent hydrolytic DNA cleavage. From the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging assay, it was observed that complex 2 also exhibits good antioxidant properties. The cytotoxicity of complexes 1-3 was tested against the lung cancer cell line (A549) and complex 2 with -NCS moiety shows maximum activity in the micromolar range. A rationale for the observed activity is proposed in light of the other properties of these molecules.
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Affiliation(s)
- Surbhi Jain
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, District Ajmer, Rajasthan 305817, India
| | - Kishalay Bhar
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, District Ajmer, Rajasthan 305817, India
| | - Shreetama Bandyopadhayaya
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, District Ajmer, Rajasthan 305817, India
| | - Vikas K Singh
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, District Ajmer, Rajasthan 305817, India
| | - Chandi C Mandal
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, District Ajmer, Rajasthan 305817, India
| | - Suman Tapryal
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, District Ajmer, Rajasthan 305817, India
| | - Anuj K Sharma
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, District Ajmer, Rajasthan 305817, India.
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Zhang R, Gu J, Wang X, Zhang L, Tuo X, Guo A. Influence of combined sulfachloropyridazine sodium and zinc on enzyme activities and biogas production during anaerobic digestion of swine manure. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:2733-2741. [PMID: 29944138 DOI: 10.2166/wst.2018.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In order to study the influence of different concentrations of zinc and sulfachloropyridazine sodium (SCPS) on anaerobic digestion (AD) during biogas production, we determined the levels of urease, dehydrogenase activity, and volatile fatty acids (VFAs) in batch tests. The experiments were conducted in small AD devices at a temperature of 37 °C using swine manure and wheat straw as raw materials. Four digestion trials were performed using different zinc and SCPS contents: control digestion with no additives (CK), SCPS at 630 mg kg-1 dry weight (S), SCPS at 630 mg kg-1 with zinc at 500 mg kg-1 dry weight (SL), and SCPS at 630 mg kg-1 with zinc at 5,000 mg kg-1 dry weight (SH). The biogas accumulation under S was 1.7 times that with CK, while SL and SH produced 78% and 35% of that under S, respectively. Correlation analysis showed that the accumulated biogas was significantly negatively correlated (p < 0.05) with VFAs, and the urease activity was significantly negatively correlated (p < 0.01) with zinc and significantly positively correlated with VFAs (p < 0.05). The dehydrogenase activity was strongly correlated (p < 0.01) with the biogas accumulated during the AD of swine manure.
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Affiliation(s)
- Ranran Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China E-mail:
| | - Jie Gu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China E-mail:
| | - Xiaojuan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China E-mail:
| | - Li Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China E-mail:
| | - Xiaxia Tuo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China E-mail:
| | - Aiyun Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China E-mail:
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Study on the Anticoagulant or Procoagulant Activities of Type II Phenolic Acid Derivatives. Molecules 2017; 22:molecules22122047. [PMID: 29182552 PMCID: PMC6149684 DOI: 10.3390/molecules22122047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/13/2017] [Accepted: 11/21/2017] [Indexed: 02/06/2023] Open
Abstract
In this study, three type II phenolic acids (caffeic acid, p-hydroxycinnamic acid, and ferulic acid) were used to synthesize a total of 18 phenolic acid derivatives. With molecular docking for molecule design and target protein (factors) screening, in combination with the confirmation of target proteins (factors) by surface plasmon resonance, and the evaluation of haemostatic and anticoagulant activities with five blood assays (plasma recalcification time, prothrombin time, activated partial thromboplastin time, fibrinogen, and thrombin time), the data indicated that caffeic acid derivatives showed certain anticoagulant or procoagulant activities and that two other series contained compounds with the best anticoagulant activities. Using Materials Studio analysis, particular functional groups that affect anticoagulant or procoagulant activities were revealed, and these conclusions can guide the discovery of compounds with better activities.
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Tang X, Tang P, Liu L. Molecular Structure-Affinity Relationship of Flavonoids in Lotus Leaf (Nelumbo nucifera Gaertn.) on Binding to Human Serum Albumin and Bovine Serum Albumin by Spectroscopic Method. Molecules 2017. [PMID: 28644391 PMCID: PMC6152052 DOI: 10.3390/molecules22071036] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Lotus leaf has gained growing popularity as an ingredient in herbal formulations due to its various activities. As main functional components of lotus leaf, the difference in structure of flavonoids affected their binding properties and activities. In this paper, the existence of 11 flavonoids in lotus leaf extract was confirmed by High Performance Liquid Chromatography (HPLC) analysis and 11 flavonoids showed various contents in lotus leaf. The interactions between lotus leaf extract and two kinds of serum albumins (human serum albumin (HSA) and bovine serum albumin (BSA)) were investigated by spectroscopic methods. Based on the fluorescence quenching, the interactions between these flavonoids and serum albumins were further checked in detail. The relationship between the molecular properties of flavonoids and their affinities for serum albumins were analyzed and compared. The hydroxylation on 3 and 3’ position increased the affinities for serum albumins. Moreover, both of the methylation on 3’ position of quercetin and the C2=C3 double bond of apigenin and quercetin decreased the affinities for HSA and BSA. The glycosylation lowered the affinities for HSA and BSA depending on the type of sugar moiety. It revealed that the hydrogen bond force played an important role in binding flavonoids to HSA and BSA.
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Affiliation(s)
- Xiaosheng Tang
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization & National Demonstration Center for Experimental Biology Education & College of Life Sciences, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Hubei Normal University, Huangshi 435002, China.
| | - Ping Tang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.
- School of Environmental Science and Engineering, Hubei Polytechnic University, Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Huangshi 435003, China.
| | - Liangliang Liu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.
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Durgun M, Turkmen H, Zengin G, Zengin H, Koyunsever M, Koyuncu I. Synthesis, characterization, in vitro cytotoxicity and antimicrobial investigation and evaluation of physicochemical properties of novel 4-(2-methylacetamide)benzenesulfonamide derivatives. Bioorg Chem 2017; 70:163-172. [PMID: 28041662 DOI: 10.1016/j.bioorg.2016.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 11/14/2016] [Accepted: 12/17/2016] [Indexed: 11/19/2022]
Abstract
In this study, several sulfonamide derivatives, 4-(2-methylacetylamino)benzenesulfonamides were synthesized. Chemical structures of the derivatives were characterized by 1H NMR, 13C NMR, LC-MS-MS, UV-Vis, FTIR, photoluminescence and elemental analysis. Sulfanilamide was reacted with 2-bromopropionyl bromide, in the presence of pyridine, to form bromo-substituted sulfonamide key intermediates, which were subsequently treated with secondary amines to obtain novel sulfonamide derivatives. All the synthesized compounds were evaluated for in vitro antimicrobial activities and cytotoxicity. Increases in ring size, and rings bearing a nitrogen heteroatom led to improvements in antimicrobial activities. As the presence of CA IX and CA XII enzymes have been implicated in some cancerous tumors, the studies presented herein focuses on targeting these enzymes. It was found that the synthesized derivatives had in vitro anti-cancer properties, where compounds (3-6) were found to be active against all cancerous cells, and no cytotoxic effects on normal cells were observed.
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Affiliation(s)
- Mustafa Durgun
- Department of Chemistry, Faculty of Science and Literature, Harran University, Sanliurfa 63190, Turkey
| | - Hasan Turkmen
- Department of Medical Pharmacology, Faculty of Medicine, Harran University, Sanliurfa 63190, Turkey
| | - Gulay Zengin
- Department of Chemistry, Faculty of Science and Literature, Gaziantep University, Gaziantep 27310, Turkey.
| | - Huseyin Zengin
- Department of Chemistry, Faculty of Science and Literature, Gaziantep University, Gaziantep 27310, Turkey
| | - Mehmet Koyunsever
- Department of Chemistry, Faculty of Science and Literature, Harran University, Sanliurfa 63190, Turkey
| | - Ismail Koyuncu
- Department of Biochemistry, Faculty of Medicine, Harran University, Sanliurfa 63190, Turkey
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Singha M, Roy S, Pandey SD, Bag SS, Bhattacharya P, Das M, Ghosh AS, Ray D, Basak A. Use of azidonaphthalimide carboxylic acids as fluorescent templates with a built-in photoreactive group and a flexible linker simplifies protein labeling studies: applications in selective tagging of HCAII and penicillin binding proteins. Chem Commun (Camb) 2017; 53:13015-13018. [DOI: 10.1039/c7cc08209f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A simple design of versatile template-based protein labeling agents has been successfully demonstrated with HCA and PBPs.
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Affiliation(s)
- Monisha Singha
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- India
| | - Sayantani Roy
- School of Bioscience
- Indian Institute of Technology Kharagpur
- India
| | - Satya Deo Pandey
- Department of Biotechnology
- Indian Institute of Technology Kharagpur
- India
| | | | | | - Mainak Das
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- India
| | - Anindya S. Ghosh
- Department of Biotechnology
- Indian Institute of Technology Kharagpur
- India
| | - Debashis Ray
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- India
| | - Amit Basak
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- India
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10
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Naveenraj S, Mangalaraja RV, Wu JJ, Asiri AM, Anandan S. Gold Triangular Nanoprisms and Nanodecahedra: Synthesis and Interaction Studies with Luminol toward Biosensor Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11854-11860. [PMID: 27775363 DOI: 10.1021/acs.langmuir.6b02976] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Gold triangular nanoprisms and nanodecahedra (pentagonal bipyramids) were synthesized in the absence and presence of nanoseeds by a simple solvothermal synthesis through the reduction of Auric Chloride (HAuCl4) with poly(vinylpyrrolidone) (PVP) in N,N-dimethylformamide (DMF), respectively. These gold nanoparticles exhibit two plasmon resonance bands. The interaction of these gold nanoparticles with luminol was investigated using UV-vis and fluorescence spectroscopy since hefty number of environmental and biological sensors are based on the combination of luminol and gold nanoparticles. The gold nanoparticles quenches the fluorescence of luminol through a static quenching mechanism, i.e., ground state complex formation, which was confirmed by both absorption spectroscopy as well as time-resolved fluorescence spectroscopy. The Stern-Volmer quenching constant and the effective quenching constant determine that gold nanodecahedra has more interaction with luminol than that of triangular gold nanoprisms. The distance between the gold nanoparticles and luminol, calculated using FRET theory, is less than 8 nm, which indicates efficient energy transfer during interaction. These results are expected to be useful for the development of novel sensors.
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Affiliation(s)
- Selvaraj Naveenraj
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology , Tiruchirappalli 620015, India
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, University of Concepcion , Concepcion, Chile
| | | | - Jerry J Wu
- Department of Environmental Engineering and Science, Feng Chia University , Taichung 407, Taiwan
| | - Abdullah M Asiri
- The Center of Excellence for Advanced Materials Research, King Abdulaziz University , P.O. Box 80203, Jeddah 21413, Saudi Arabia
| | - Sambandam Anandan
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology , Tiruchirappalli 620015, India
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Design, synthesis and biological activities of novel 5-isopropyl-2-methylphenolhydrazide-based sulfonamide derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2759-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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12
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Han R, Liu B, Li G, Zhang Q. Investigation on the interaction of cefpirome sulfate with lysozyme by fluorescence quenching spectroscopy and synchronous fluorescence spectroscopy. LUMINESCENCE 2016; 31:580-586. [PMID: 26304690 DOI: 10.1002/bio.2998] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 07/09/2015] [Accepted: 07/10/2015] [Indexed: 12/16/2023]
Abstract
The reaction mechanism of cefpirome sulfate with lysozyme at different temperatures (298, 310 and 318 K) was investigated using fluorescence quenching and synchronous fluorescence spectroscopy under simulated physiological conditions. The results clearly demonstrated that cefpirome sulfate caused strong quenching of the fluorescence of lysozyme by a static quenching mechanism. The binding constants obtained using the above methods were of the same order of magnitude and very similar. Static electric forces played a key role in the interaction between cefpirome sulfate and lysozyme, and the number of binding sites in the interaction was close to 1. The values of Hill's coefficients were > 1, indicating that drugs or proteins showed a very weakly positive cooperativity in the system. In addition, the conclusions obtained from the two methods using the same equation were consistent. The results indicated that synchronous fluorescence spectrometry could be used to study the binding mechanism between drug and protein, and was a useful supplement to the fluorescence quenching method. In addition, the effect of cefpirome sulfate on the secondary structure of lysozyme was analyzed using circular dichroism spectroscopy.
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Affiliation(s)
- Rong Han
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry & Enviro nmental Science, Hebei University, Baoding, People's Republic of China
| | - Baosheng Liu
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry & Enviro nmental Science, Hebei University, Baoding, People's Republic of China
| | - Gaixia Li
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry & Enviro nmental Science, Hebei University, Baoding, People's Republic of China
| | - Qiuju Zhang
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry & Enviro nmental Science, Hebei University, Baoding, People's Republic of China
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13
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Singh S, Sharma K, Awasthi SK. The interaction of (7-chloroquinolin-4-yl)-(2,5-dimethoxyphenyl)-amine hydrochloride dihydrate with serum albumin proteins, inputs from spectroscopic, molecular docking and X-ray diffraction studies. RSC Adv 2015. [DOI: 10.1039/c5ra02815a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The interaction of (7-chloroquinolin-4-yl)-(2,5-dimethoxyphenyl)-amine hydrochloride dihydrate (CQDPA), a combination partner in antimalarial therapy, with serum albumin proteins (BSA and HSA) was assessed using spectroscopic techniques.
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Affiliation(s)
- Shailja Singh
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Kumkum Sharma
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Satish K. Awasthi
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
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