1
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Li Y, Ma Y, Mu C, Gu J, Li Z. Simultaneous binding characterization of different chromium speciation to serum albumin. Biometals 2024; 37:101-113. [PMID: 37610601 DOI: 10.1007/s10534-023-00531-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 08/11/2023] [Indexed: 08/24/2023]
Abstract
The binding process between three species of chromium and serum albumin (SA) was investigated, as well as the interaction between K2Cr2O7 and bovine serum albumin (BSA) under coexistence of different chromium forms. CrCl3, K2Cr2O7 and Crpic bound to SA spontaneously through Van der Waals force, and their binding constants were 103-104 M-1 at 298 K, respectively. K2Cr2O7 and Crpic both had strong binding affinity for BSA, and significantly affected the secondary structure of BSA and the microenvironment surrounding amino acid residues. Chromium exhibited a greater fluorescence quenching constant towards HSA than toward BSA, and K2Cr2O7 induced greater conformational changes in human serum albumin (HSA) than in BSA. A weak binding of CrCl3 to BSA had no significant effect on the binding affinity of K2Cr2O7 to BSA. K2Cr2O7 and BSA have a greater binding affinity when coexisting with Crpic, and K2Cr2O7 induces a greater conformational change in BSA.
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Affiliation(s)
- Ye Li
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China
| | - Yanxuan Ma
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China
| | - Chunyu Mu
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China
| | - Jiali Gu
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China.
| | - Zimu Li
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China
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2
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Dorairaj DP, Haribabu J, Dharmasivam M, Malekshah RE, Mohamed Subarkhan MK, Echeverria C, Karvembu R. Ru(II)- p-Cymene Complexes of Furoylthiourea Ligands for Anticancer Applications against Breast Cancer Cells. Inorg Chem 2023; 62:11761-11774. [PMID: 37459067 DOI: 10.1021/acs.inorgchem.3c00757] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Half-sandwich Ru(II) complexes containing nitro-substituted furoylthiourea ligands, bearing the general formula [(η6-p-cymene)RuCl2(L)] (1-6) and [(η6-p-cymene)RuCl(L)(PPh3)]+ (7--12), have been synthesized and characterized. In contrast to the spectroscopic data which revealed monodentate coordination of the ligands to the Ru(II) ion via a "S" atom, single crystal X-ray structures revealed an unusual bidentate N, S coordination with the metal center forming a four-membered ring. Interaction studies by absorption, emission, and viscosity measurements revealed intercalation of the Ru(II) complexes with calf thymus (CT) DNA. The complexes showed good interactions with bovine serum albumin (BSA) as well. Further, their cytotoxicity was explored exclusively against breast cancer cells, namely, MCF-7, T47-D, and MDA-MB-231, wherein all of the complexes were found to display more pronounced activity than their ligand counterparts. Complexes 7-12 bearing triphenylphosphine displayed significant cytotoxicity, among which complex 12 showed IC50 values of 0.6 ± 0.9, 0.1 ± 0.8, and 0.1 ± 0.2 μM against MCF-7, T47-D, and MDA-MB-231 cell lines, respectively. The most active complexes were tested for their mode of cell death through staining assays, which confirmed apoptosis. The upregulation of apoptotic inducing and downregulation of apoptotic suppressing proteins as inferred from the western blot analysis also corroborated the apoptotic mode of cell death. The active complexes effectively generated reactive oxygen species (ROS) in MDA-MB-231 cells as analyzed from the 2',7'-dichlorofluorescein diacetate (DCFH-DA) staining. Finally, in vivo studies of the highly active complexes (6 and 12) were performed on the mice model. Histological analyses revealed that treatment with these complexes at high doses of up to 8 mg/kg did not induce any visible damage to the tested organs.
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Affiliation(s)
| | - Jebiti Haribabu
- Faculty of Medicine, University of Atacama, Los Carreras 1579, 1532502 Copiapo, Chile
| | - Mahendiran Dharmasivam
- Department of Chemistry, Griffith Institute for Drug Discovery, Griffith University, Nathan, Brisbane, Queensland 4111, Australia
| | - Rahime Eshaghi Malekshah
- Medical Biomaterial Research Centre (MBRC), Tehran University of Medical Sciences, Tehran 1416634793, Iran
| | - Mohamed Kasim Mohamed Subarkhan
- The First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou 310018, P. R. China
| | - Cesar Echeverria
- Faculty of Medicine, University of Atacama, Los Carreras 1579, 1532502 Copiapo, Chile
| | - Ramasamy Karvembu
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India
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3
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Rout D, Sharma S, Agarwala P, Upadhyaya AK, Sharma A, Sasmal DK. Interaction of Ibuprofen with Partially Unfolded Bovine Serum Albumin in the Presence of Ionic Micelles and Oligosaccharides at Different λ ex and pH: A Spectroscopic Analysis. ACS OMEGA 2023; 8:3114-3128. [PMID: 36713709 PMCID: PMC9878652 DOI: 10.1021/acsomega.2c06447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/08/2022] [Indexed: 06/18/2023]
Abstract
The interaction between the plasma protein bovine serum albumin (BSA) and the drug ibuprofen (IBU) has been investigated at three different pH values (7.4, 6.5, and 8.0) in the presence of oligosaccharides and surfactants. The interaction analysis of BSA with oligosaccharides and surfactants has also been studied in the absence of the drug ibuprofen. The results obtained give convenient and efficient access to understand the mechanism of binding of ibuprofen to BSA, and the major forces involved are found to be hydrophobic forces, hydrogen bonding and ionic interactions. In addition to that, the formation of inclusion complexes of ibuprofen with oligosaccharides (β-CD and 2-HP-β-CD) has been observed, which has depicted that due to the hydrophobic nature of ibuprofen, it becomes more soluble in the presence of oligosaccharides, but due to the larger size of the inclusion complexes, these could not be able to access the hydrophobic pocket of BSA where tryptophan-212 (Trp-212) resides. The binding interaction between BSA and ibuprofen is observed in the presence of surfactants (SDS and CTAB), which partially unfold the protein. Non-radiative fluorescence resonance energy transfer (FRET) from Trp and Tyr residues of BSA in the presence of an anionic surfactant SDS to ibuprofen has depicted that there is a possibility of drug binding even in the partially unfolded state of BSA protein. Furthermore, the distance between the protein and the drug has been calculated from the FRET efficiency, which gives a comprehensive overview of ibuprofen binding to BSA even in its partially denatured state. The hydrophobic drug binding to the partially unfolded serum albumin protein (BSA) supports the "necklace and bead structures" model and opens up a new direction of drug loading and delivery system, which will have critical therapeutic applications in the efficient delivery of pharmacologically prominent drugs.
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4
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Ajdari Y, Faraji AR, Ashouri F. Super-magnetization of Co-pectin/gelatin biocomposite for selective synthesis vitamin K3: Design, fabrication and revealing role of the stabilizers. Int J Biol Macromol 2022; 214:22-32. [PMID: 35709872 DOI: 10.1016/j.ijbiomac.2022.06.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/28/2022] [Accepted: 06/08/2022] [Indexed: 11/05/2022]
Abstract
High pollution and low productivity of the traditional method for synthesis of vitamin group K require an efficient, low-cost, and environmentally sustainable biocatalyst as a greener process. These have encouraged us to design and fabricate a series of novel Co NPs impregnated pectin-gelatin (Co@PTNC, Co@GTNC & Co@PT0.7GT0.3NC) and grafted pectin-gelatin modified magnetic beads (Co@MPT0.7GT0.3NC) by the in situ reduction-precipitation procedure and chemical application in the selective synthesis of vitamin K3 without any promoters or ligands. The chemical structure and morphological properties were fully characterized. Additionally, the influence of structural parameters (i.e., kind of stabilizer with different ratio (nPT/nGT), amount of Co loading, durability, size, distribution, and Leaching test) and operating parameters (i.e., reaction time, reaction temperature, nature of the solvent, and concentration of oxidant) on the efficacy of the biocatalysts was evaluated in detail. The green synthesis involves several advantages, like the heterogeneous nature of catalysts, environmentally-friendly and mild conditions, high recovery efficiency due to superparamagnetism, high activity, and the sustainable performance of the biocatalyst.
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Affiliation(s)
- Yasamin Ajdari
- Active Pharmaceutical Ingredients Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Ali Reza Faraji
- Department of Organic Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Nutrition and Food Sciences Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Fatemeh Ashouri
- Department of Applied Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
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5
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Sünbül AB, Inan A, Çaylar M, Urus S, İkiz M, Ispir E. Synthesis of Novel Azo-Azomethine-Based Pd(II) Complexes and Catalytic Activities in the Synthesis of Vitamin K 3 (2-Methyl-1,4-Naphthoquinone). Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2072350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ali Burak Sünbül
- Department of Chemistry, Faculty of Science and Arts, Kahramanmaras Sütçü İmam University, Kahramanmaras, Turkey
| | - Ayşe Inan
- Department of Chemistry, Faculty of Science and Arts, Kahramanmaras Sütçü İmam University, Kahramanmaras, Turkey
| | - Mahmut Çaylar
- Department of Chemistry, Faculty of Science and Arts, Kahramanmaras Sütçü İmam University, Kahramanmaras, Turkey
- Research and Development Centre for University-Industry-Public Relations, Kahramanmaras Sütçü İmam University, Kahramanmaras, Turkey
| | - Serhan Urus
- Department of Chemistry, Faculty of Science and Arts, Kahramanmaras Sütçü İmam University, Kahramanmaras, Turkey
| | - Mesut İkiz
- Department of Medical Services and Techniques, Vocational School of Health Service, University of Health Sciences, İstanbul, Turkey
| | - Esin Ispir
- Department of Chemistry, Faculty of Science and Arts, Kahramanmaras Sütçü İmam University, Kahramanmaras, Turkey
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6
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Promising Antibacterial and Antifungal Agents Based on Thiolated Vitamin K3 Analogs: Synthesis, Bioevaluation, Molecular Docking. Pharmaceuticals (Basel) 2022; 15:ph15050586. [PMID: 35631412 PMCID: PMC9146127 DOI: 10.3390/ph15050586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/20/2022] [Accepted: 04/24/2022] [Indexed: 02/07/2023] Open
Abstract
In the present study, we designed and synthesized thiolated VK3 analogs (VK3a–g) along with an extensive antimicrobial study. After the evaluation of the antibacterial and antifungal activity against various bacterial and fungal strains, we presented an initial structure–activity relationship study on these VK3 analogs. In particular, four thiolated VK3 analogs exhibited superior biological potency against some Gram-positive bacterial strains, including Staphylococcus aureus (ATCC® 29213) and Enterococcus faecalis (ATCC® 29212). Next, all thiolated VK3 analogs were evaluated for their potential of cell growth inhibition on the NCI-60 cancer cell lines panel. This screening underlined that the thiolated VK3 analogs have no visible cytotoxicity on different cancer cell lines. The selected two thiolated VK3 analogs (VK3a and VK3b), having minimal hemolytic activity, which also have the lowest MIC values on S. aureus and E. faecalis, were further evaluated for their inhibition capacities on biofilm formation after evaluating their potential in vitro antimicrobial activity against each of the 20 clinically obtained resistant strains of Staphylococcus aureus. VK3b showed excellent antimicrobial activity against clinically resistant S. aureus isolates. Furthermore, the tested molecules showed nearly two log10 reduction in the viable cell count at six hours according to the time kill curve studies. Although these molecules decreased biofilm attachment about 50%, when sub-MIC concentrations were used these molecules increased the percentage of biofilm formation. The molecular docking of VK3a and VK3b in S. aureus thymidylate kinase was conducted in order to predict their molecular interactions. VK3a and VK3b exhibited excellent lead-likeness properties and pharmacokinetic profiles that qualify them for further optimization and development. In conclusion, since investigating efficient novel antimicrobial molecules is quite difficult, these studies are of high importance, especially in the present era of antimicrobial resistance.
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7
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Fluorinated N-quinoxaline-based boron complexes: Synthesis, photophysical properties, and selective DNA/BSA biointeraction. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132444] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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8
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A study of structure-activity relationship and anion-controlled quinolinyl Ag(I) complexes as antimicrobial and antioxidant agents as well as their interaction with macromolecules. Biometals 2022; 35:363-394. [PMID: 35275314 DOI: 10.1007/s10534-022-00377-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 02/18/2022] [Indexed: 12/18/2022]
Abstract
In this communication, we feature the synthesis and in-depth characterization of a series of silver(I) complexes obtained from the complexation of quinolin-4-yl Schiff base ligands ((E)-2-((quinolin-4-ylmethylene)amino)phenol La, 2-(quinolin-4-yl)benzo[d]thiazole Lb, (E)-N-(2-fluorophenyl)-1-(quinolin-4-yl)methanimine Lc, (E)-N-(4-chlorophenyl)-1-(quinolin-4-yl)methanimine Ld, (E)-1-(quinolin-4-yl)-N-(p-tolyl)methanimine Le, (E)-1-(quinolin-4-yl)-N-(thiophen-2-ylmethyl)methanimine Lf) and three different silver(I) anions (nitrate, perchlorate and triflate). Structurally, the complexes adopted different coordination geometries, which included distorted linear or distorted tetrahedral geometry. The complexes were evaluated in vitro for their potential antibacterial and antioxidant activities. In addition, their interactions with calf thymus-DNA (CT-DNA) and bovine serum albumin (BSA) were evaluated. All the complexes had a wide spectrum of effective antibacterial activity against gram-positive and gram-negative bacterial and good antioxidant properties. The interactions of the complexes with CT-DNA and BSA were observed to occur either through intercalation or through a minor groove binder, while the interaction of the complexes with BSA reveals that some of the complexes can strongly quench the fluorescence of BSA through the static mechanism. The molecular docking studies of the complexes were also done to further elucidate the modes of interaction with CT-DNA and BSA.
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9
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Hahn da Silveira C, Chaves OA, Marques AC, Rosa NMP, Costa LAS, Iglesias BA. Synthesis, Photophysics, Computational Approaches, and Biomolecule Interactive Studies of Metalloporphyrins Containing Pyrenyl Units: Influence of the Metal Center. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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SreedharanNair S, Unni KK, Sasidharanpillai S, Kumar S, Aravindakumar CT, Aravind UK. Bio-physical and Computational Studies on Serum Albumin / Target Protein Binding of a Potential Anti-Cancer Agent. Eur J Pharm Sci 2022; 172:106141. [PMID: 35143979 DOI: 10.1016/j.ejps.2022.106141] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 02/06/2022] [Accepted: 02/06/2022] [Indexed: 11/03/2022]
Abstract
The successful evolution of an effective drug depends on its pharmacokinetics, efficiency and safety and these in turn depend on the drug-target/drug-carrier protein binding. This work, deals with the interaction of a pyridine derivative, 2-hydroxy-5-(4-methoxyphenyl)-6-phenylpyridine 3-carbonitrile (HDN) with serum albumins at physiological conditions utilizing the steady state and time-resolved fluorescence techniques by probing the emission behavior of Trp in BSA and HSA. In-silico studies revealed a combined static and dynamic quenching mechanism for the interactions. The binding studies suggests a spontaneous binding between HDN and the albumins with a moderate binding affinity (Kb ∼ 10-5 M-1) with a single class of binding site. The FRET mediated emission from HDN indicates preferential binding of HDN in subdomain IIA of the albumins with Trp residue in close proximity. Circular dichroism results indicate HDN induced conformational changes for BSA and HSA, but the α-helical secondary structure was well preserved even up to a concentration of 10 µM HDN. Moderate binding affinity of HDN with BSA and HSA and the unaltered secondary structure of proteins on binding propose the potential application of HDN as an efficient drug. The application of docking method on the affinity of HDN towards the proposed target/receptor is discussed.
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Affiliation(s)
- Sreedhanya SreedharanNair
- Inter University Instrumentation Centre, Mahatma Gandhi University, Kottayam 686560, India; N. S. S. College, Pandalam, Pathanamthitta, 689501, India
| | | | | | - Satheesh Kumar
- Government Medical College Kottayam, Arpookara, Kottayam, 686008, Kerala, India
| | | | - Usha K Aravind
- School of Environmental Studies, Cochin University of Science and Technology, Kerala, 686 560, India.
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11
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Narwane M, Dorairaj DP, Chang YL, Karvembu R, Huang YH, Chang HW, Hsu SCN. Tris-(2-pyridyl)-pyrazolyl Borate Zinc(II) Complexes: Synthesis, DNA/Protein Binding and In Vitro Cytotoxicity Studies. Molecules 2021; 26:7341. [PMID: 34885924 PMCID: PMC8659194 DOI: 10.3390/molecules26237341] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 11/29/2021] [Accepted: 12/01/2021] [Indexed: 11/16/2022] Open
Abstract
Zn(II) complexes bearing tris[3-(2-pyridyl)-pyrazolyl] borate (Tppy) ligand (1-3) was synthesized and examined by spectroscopic and analytical tools. Mononuclear [TppyZnCl] (1) has a Zn(II) centre with one arm (pyrazolyl-pyridyl) dangling outside the coordination sphere which is a novel finding in TppyZn(II) chemistry. In complex [TppyZn(H2O)][BF4] (2) hydrogen bonding interaction of aqua moiety stabilizes the dangling arm. In addition, solution state behaviour of complex 1 confirms the tridentate binding mode and reactivity studies show the exogenous axial substituents used to form the [TppyZnN3] (3). The complexes (1-3) were tested for their ability to bind with Calf thymus (CT) DNA and Bovine serum albumin (BSA) wherein they revealed to exhibit good binding constant values with both the biomolecules in the order of 104-105 M-1. The intercalative binding mode with CT DNA was confirmed from the UV-Visible absorption, viscosity, and ethidium bromide (EB) DNA displacement studies. Further, the complexes were tested for in vitro cytotoxic ability on four triple-negative breast cancer (TNBC) cell lines (MDA-MB-231, MDA-MB-468, HCC1937, and Hs 578T). All three complexes (1-3) exhibited good IC50 values (6.81 to 16.87 μM for 24 h as seen from the MTS assay) results which indicated that these complexes were found to be potential anticancer agents against the TNBC cells.
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Affiliation(s)
- Manmath Narwane
- Drug Development and Value Creation Research Centre, Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (M.N.); (D.P.D.); (Y.-L.C.)
| | - Dorothy Priyanka Dorairaj
- Drug Development and Value Creation Research Centre, Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (M.N.); (D.P.D.); (Y.-L.C.)
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India;
| | - Yu-Lun Chang
- Drug Development and Value Creation Research Centre, Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (M.N.); (D.P.D.); (Y.-L.C.)
| | - Ramasamy Karvembu
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India;
| | - Yu-Han Huang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
| | - Hsueh-Wei Chang
- Department of Biomedical Science and Environment Biology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Sodio C. N. Hsu
- Drug Development and Value Creation Research Centre, Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (M.N.); (D.P.D.); (Y.-L.C.)
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
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12
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Mahalakshmi G, Selvakumar B, Vennila KN, Rao PL, Madhuri S, Seenivasaperumal M, Elango KP. Spectroscopic Studies on the Interaction of Naphthyridines with DNA and Fluorescent Detection of DNA in Agarose Gel. J Fluoresc 2021; 31:327-338. [PMID: 33389419 DOI: 10.1007/s10895-020-02658-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 12/03/2020] [Indexed: 11/25/2022]
Abstract
Four new naphthyridine derivatives (R1-R4) possessing amino acid or boronic acid moieties have been synthesized and characterized using 1H and 13C NMR, FT-IR, and mass spectral techniques. The mechanism of binding of these probes with calf thymus DNA (CT-DNA) has been delineated through UV-Vis, fluorescence, and circular dichroism (CD) spectral techniques along with thermodynamic and molecular docking studies. Small hypochromicity in absorption maximum of the probes without any shift in wavelength of absorption suggests groove binding mode of interaction of these probes with CT-DNA, confirmed by CD and 1H NMR spectral data competitive binding assay with ethidium bromide (EB). CT-DNA quenches the fluorescence of these probes via a static quenching mechanism. In the case of R1 and R4, the observed ΔHo < 0 and ΔSo > 0suggest that these probes interact with CT-DNA through H-bonding and hydrophobic interactions, while in the interaction of R2 and R3, van der Walls and H-boding forces are found to be dominant (ΔHo < 0 and ΔSo < 0). Results of molecular docking investigations corroborate well with that of spectral studies, and these probes bind in the minor groove of DNA. These probes are found to be effective fluorescent staining agents for DNA in agarose gel in gel electrophoresis experiment with sensitivity comparable to that of EB, and DNA amounts as low as 37.5 ng are visually detectable in the gel.
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Affiliation(s)
- G Mahalakshmi
- Department of Chemistry, Gandhigram Rural Institute, Deemed to be University, Gandhigram, 624 302, India
| | - B Selvakumar
- Anthem Biosciences Pvt. Ltd., Bangalore, 560 099, India
| | - K N Vennila
- Department of Chemistry, Gandhigram Rural Institute, Deemed to be University, Gandhigram, 624 302, India
| | - P Lakshmana Rao
- National Institute of Animal Biotechnology, Hyderabad, 500 049, India
| | - S Madhuri
- National Institute of Animal Biotechnology, Hyderabad, 500 049, India
| | - M Seenivasaperumal
- Department of Chemistry, Gandhigram Rural Institute, Deemed to be University, Gandhigram, 624 302, India
| | - Kuppanagounder P Elango
- Department of Chemistry, Gandhigram Rural Institute, Deemed to be University, Gandhigram, 624 302, India.
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13
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Al‐Mohaimeed AM, Al‐Farraj ES, Al‐Onazi WA, Alothman AA, Almarhoon ZM. Synthesis, characterization, density functional theory, thermal, antimicrobial efficacy, and
DNA
binding/cleavage studies of Cu(
II
), Cr(
III
), Fe(
III
), Ni(
II
), Co(
II
), Zn(
II
), and Pt(
IV
) complexes with a derivative of 2‐hydroxyphenoxymethylfuran‐5‐carbaldehyde. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Amal M. Al‐Mohaimeed
- Department of Chemistry, College of Science King Saud University Riyadh Saudi Arabia
| | - Eida S. Al‐Farraj
- Department of Chemistry, College of Science Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh Saudi Arabia
| | - Wedad A. Al‐Onazi
- Department of Chemistry, College of Science King Saud University Riyadh Saudi Arabia
| | - Asma A. Alothman
- Department of Chemistry, College of Science King Saud University Riyadh Saudi Arabia
| | - Zainab M. Almarhoon
- Department of Chemistry, College of Science King Saud University Riyadh Saudi Arabia
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14
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Alothman AA, Almarhoon ZM. Nano-sized some transition metal complexes of Schiff base ligand based on 1-aminoquinolin-2(1H)-one. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Synthesis, characterization, and biological evaluation of a set of new alkylthio substituted plastoquinones containing ester group. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Bjørklund G, Svanberg E, Dadar M, Card DJ, Chirumbolo S, Harrington DJ, Aaseth J. The Role of Matrix Gla Protein (MGP) in Vascular Calcification. Curr Med Chem 2020; 27:1647-1660. [PMID: 30009696 DOI: 10.2174/0929867325666180716104159] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/22/2018] [Accepted: 07/02/2018] [Indexed: 01/07/2023]
Abstract
Matrix Gla protein (MGP) is a vitamin K-dependent protein, which is synthesized in bone and many other mesenchymal cells, which is also highly expressed by vascular smooth muscle cells (VSMCs) and chondrocytes. Numerous studies have confirmed that MGP acts as a calcification-inhibitor although the mechanism of action is still not fully understood. The modulation of tissue calcification by MGP is potentially regulated in several ways including direct inhibition of calcium-phosphate precipitation, the formation of matrix vesicles (MVs), the formation of apoptotic bodies (ABs), and trans-differentiation of VSMCs. MGP occurs as four species, i.e. fully carboxylated (cMGP), under-carboxylated, i.e. poorly carboxylated (ucMGP), phosphorylated (pMGP), and non-phosphorylated (desphospho, dpMGP). ELISA methods are currently available that can detect the different species of MGP. The expression of the MGP gene can be regulated via various mechanisms that have the potential to become genomic biomarkers for the prediction of vascular calcification (VC) progression. VC is an established risk factor for cardiovascular disease and is particularly prevalent in those with chronic kidney disease (CKD). The specific action of MGP is not yet clearly understood but could be involved with the functional inhibition of BMP-2 and BMP-4, by blocking calcium crystal deposition and shielding the nidus from calcification.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway
| | - Erik Svanberg
- Department of Medicine, Solleftea Hospital, Solleftea, Sweden
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - David J Card
- Human Nutristasis Unit, Viapath, Guy's and St. Thomas' NHS Foundation Trust, London, United Kingdom
| | - Salvatore Chirumbolo
- Department of Neurological and Movement Sciences, University of Verona, Verona, Italy
| | - Dominic J Harrington
- Human Nutristasis Unit, Viapath, Guy's and St. Thomas' NHS Foundation Trust, London, United Kingdom
| | - Jan Aaseth
- Faculty of Health and Social Sciences, Inland Norway University of Applied Sciences, Elverum, Norway
- Department of Research, Innlandet Hospital Trust, Brumunddal, Norway
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17
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Al-Farraj ES, Almarhoon ZM, Alothman AA, Al-Mohaimeed AM, Al-Onazi WA. Synthesis, spectroscopic characterization and biological studies of nano-sized Co(II), Ni(II), Cu(II) and Zn(II) Schiff's base hybrids. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Ansari A, Ali A, Asif M. Steroidal thiazolidinone derivatives: Design, synthesis and their molecular interaction with human serum albumin. Steroids 2019; 148:99-113. [PMID: 31082411 DOI: 10.1016/j.steroids.2019.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/15/2019] [Accepted: 02/26/2019] [Indexed: 12/17/2022]
Abstract
A series of steroidal thiazolidinone derivatives have been synthesized through one-pot multicomponent reaction involving steroidal ketone, thiosemicarbazide/methyl-thiosemicarbazide and DMAD in presence of AlCl3 as a Lewis acid catalyst. Among all the synthesized steroidal thiazolidinone derivatives, compound 7-9 (ST 7-9) were investigated for their in vitro molecular interaction with human serum albumin. Intrinsic fluorescence spectroscopy, constant wavelength synchronous fluorescence spectroscopy, circular dichroism and UV-visible absorption techniques have been exploited to characterize the binding phenomena in phosphate buffer solution at pH 7.4. The experimental results indicated that ST 7-9 bind to HSA and the intrinsic fluorescence of HSA was quenched through static quenching mechanism. The binding parameters were calculated and the binding constants obtained were 1.44 × 105 M-1 for ST 7, 0.84 × 105 M-1 for ST 8 and 1.06 × 105 M-1 for ST 9. Circular dichroism analysis confirms that the presence of ST 7-9, altered the secondary structure of HSA due to partial unfolding of the polypeptide chain. Furthermore, hemolytic activity assay demonstrated that the synthesized steroidal thiazolidinone derivatives have good compatibility towards human red blood cells. Finally, molecular docking studies revealed that the steroidal thiazolidinones can bind in the hydrophobic cavity of HSA, by hydrophobic and hydrogen bonding interaction. These results provided valuable information about the binding mechanism of ST 7-9 with HSA and play a pivotal role in the development of steroidal heterocycle inspired compounds.
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Affiliation(s)
- Anam Ansari
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India
| | - Abad Ali
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India; Organometallic Synthesis and Catalysis Group, Chemical Engineering Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra, India
| | - Mohd Asif
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India
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19
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M.A. Alaghaz A, Aldulmani SA. Preparation, Structural characterization and DNA binding/cleavage affinity of new bioactive nano‐sized metal (II/IV) complexes with oxazon‐Schiff's base ligand. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5135] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Abdel‐Nasser M.A. Alaghaz
- Chemistry Department, Faculty of ScienceAl–Azhar University Nasr City 1884 Cairo Egypt
- Chemistry Department, Faculty of ScienceJazan University Jizan Saudi Arabia
| | - Sharah A.A. Aldulmani
- Department of Chemistry, Faculty of Science for GirlsKing Khalid University Abha Saudi Arabia
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20
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Kosiha A, Lo KM, Parthiban C, Elango KP. Studies on the interaction of mononuclear metal(II) complexes of amino‑naphthoquinone with bio-macromolecules. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 94:778-787. [DOI: 10.1016/j.msec.2018.10.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 09/05/2018] [Accepted: 10/03/2018] [Indexed: 12/11/2022]
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21
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Vennila KN, Elango KP. Understanding the binding of quinoline amines with human serum albumin by spectroscopic and induced fit docking methods. J Biomol Struct Dyn 2018; 37:2753-2765. [DOI: 10.1080/07391102.2018.1496141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- K. N. Vennila
- Department of Chemistry, Gandhigram Rural Institute (Deemed to be University), Gandhigram, Tamil Nadu, India
| | - Kuppanagounder P. Elango
- Department of Chemistry, Gandhigram Rural Institute (Deemed to be University), Gandhigram, Tamil Nadu, India
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22
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Introduction of fluorinated environment on metformin. Evaluation of its serum-albumin interaction with molecular modeling studies. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.03.083] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Kosiha A, Parthiban C, Elango KP. Metal(II) complexes of bioactive aminonaphthoquinone-based ligand: synthesis, characterization and BSA binding, DNA binding/cleavage, and cytotoxicity studies. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1461846] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- A. Kosiha
- Department of Chemistry, Gandhigram Rural Institute, Deemed to be University, Gandhigram, India
| | - C. Parthiban
- Department of Chemistry, Gandhigram Rural Institute, Deemed to be University, Gandhigram, India
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Chaves OA, de Lima Santos MR, de Oliveira MC, Sant'Anna CMR, Ferreira RC, Echevarria A, Netto-Ferreira JC. Synthesis, tyrosinase inhibition and transportation behavior of novel β-enamino thiosemicarbazide derivatives by human serum albumin. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.083] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Kosiha A, Parthiban C, Ciattini S, Chelazzi L, Elango KP. Metal complexes of naphthoquinone based ligand: synthesis, characterization, protein binding, DNA binding/cleavage and cytotoxicity studies. J Biomol Struct Dyn 2017; 36:4170-4181. [DOI: 10.1080/07391102.2017.1413423] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- A. Kosiha
- Department of Chemistry, Gandhigram Rural Institute (Deemed to be University), Gandhigram 624 302, India
| | - C. Parthiban
- Department of Chemistry, Gandhigram Rural Institute (Deemed to be University), Gandhigram 624 302, India
| | - Samuele Ciattini
- Centro di Cristallografia Strutturale, Università degli studi di Firenze, 50019, Sesto Fiorentino (Fi), Italy
| | - Laura Chelazzi
- Centro di Cristallografia Strutturale, Università degli studi di Firenze, 50019, Sesto Fiorentino (Fi), Italy
| | - Kuppanagounder P. Elango
- Department of Chemistry, Gandhigram Rural Institute (Deemed to be University), Gandhigram 624 302, India
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Kosiha A, Parthiban C, Elango KP. Synthesis, characterization and DNA binding/cleavage, protein binding and cytotoxicity studies of Co(II), Ni(II), Cu(II) and Zn(II) complexes of aminonaphthoquinone. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 168:165-174. [DOI: 10.1016/j.jphotobiol.2017.02.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 02/13/2017] [Accepted: 02/13/2017] [Indexed: 11/17/2022]
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