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Sarmah S, Konthoujam I, Prakash V, Aguan K, Singha Roy A. Unleashing the binding interaction of chrysin-Cu(II) complex with the biomacromolecular targets: further studies of cell cytotoxicity and radical scavenging properties. J Biomol Struct Dyn 2024:1-17. [PMID: 38189346 DOI: 10.1080/07391102.2023.2300122] [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: 06/05/2023] [Accepted: 12/14/2023] [Indexed: 01/09/2024]
Abstract
Flavonoids are significant dietary components and have ability to coordinate with metal ions to produce novel drug discovery leads that are superior to those of the parent flavonoids. Here, in this report, we have synthesized chrysin-Cu(II) complex (as per reported article) and characterized it further with different analytical techniques. The synthesized complex was evaluated for radical scavenging and cell cytotoxicity studies where it exhibited enhanced activity as compared to bare chrysin. The interaction studies of the complex with ct-DNA (Kb ⁓ 105 M-1), human serum albumin (HSA) and ovalbumin (Kb ⁓ 104 M-1) were evaluated using multi-spectroscopic and molecular docking studies. Groove binding mode with ct-DNA was observed as confirmed from competitive displacement studies, viscosity measurement, melting temperature estimation and docking analyses. The complex exhibited comparatively higher affinity towards ct-DNA which indicated it efficient transportation by the carrier proteins and controlled release in the target DNA.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sharat Sarmah
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong, India
| | - Ibemhanbi Konthoujam
- Department of Biotechnology and Bioinformatics, North-Eastern Hill University, Shillong, India
| | - Vivek Prakash
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Kripamoy Aguan
- Department of Biotechnology and Bioinformatics, North-Eastern Hill University, Shillong, India
| | - Atanu Singha Roy
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong, India
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Sapmaz H, Erkmen C, Kabır MZ, Tayyab H, Mohamad SB, Uslu B. Spectrofluorometric and computational approaches for the interaction studies of aclonifen and bifenox with human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121772. [PMID: 36030670 DOI: 10.1016/j.saa.2022.121772] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/06/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
Interaction of two broadly used herbicides, aclonifen (ACF) and bifenox (BIF) with the major transporter in human circulation, human serum albumin (HSA) were examined using fluorescence and absorption spectral measurements combined with in silico analyses. Assessment of the fluorescence and absorption spectral results affirmed the complexation between ACF/BIF and HSA. Increase in the KSV value with temperature characterized the ACF/BIF-induced quenching of the protein fluorescence as dynamic quenching. The moderate binding affinities (Kf = 1.74×104 - 1.95×106 M-1 for ACF-HSA complex; Kf = 2.00×103 - 1.02×106 M-1 for BIF-HSA complex) were pointed out between ACF/BIF and HSA, showing a relatively higher binding constant values with increasing temperatures. Quantitative evaluation of thermodynamic data (ΔS = +0.86 kJ mol-1 K-1 and ΔH = +225.43 kJ mol-1 for ACF-HSA complex; ΔS = +1.11 kJ mol-1 K-1 and ΔH = +304.63 kJ mol-1 for BIF-HSA complex) predicted the contribution of hydrophobic interactions in the ACF-HSA and BIF-HSA association processes, which were well supported by our molecular docking results. In silico analyses were made to acquire insight details into the ACF and BIF binding to HSA at the binding sites and suggested the locations of ACF and BIF binding sites as both subdomain IIA (site I) and subdomain IIIA (site II) of HSA, showing more preference toward site I.
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Affiliation(s)
- Hilal Sapmaz
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey; Ankara University, The Graduate School of Health Sciences, Forensic Pharmacy, 06110 Ankara, Turkey
| | - Cem Erkmen
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
| | - Md Zahirul Kabır
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
| | - Hafsa Tayyab
- Faculty of Science, Bioinformatics Programme, Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - Saharuddin B Mohamad
- Faculty of Science, Bioinformatics Programme, Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia; Centre of Research for Computational Sciences and Informatics for Biology, Bioindustry, Environment, Agriculture and Healthcare, University of Malaya, Kuala Lumpur, Malaysia
| | - Bengi Uslu
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey.
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Infanta S AKT, Durairaju N, Raja S, Murugesan T, Dhanapal AR, Natarajan K, Balakrishnan A, Vedagiri H, Muthusamy P, Jayaraman A. Pharmacological assessment of Ru(II) complex with GidA protein- A novel topoisomerase II inhibitor towards cancer therapeutics. J Biomol Struct Dyn 2022; 41:4143-4153. [PMID: 35514135 DOI: 10.1080/07391102.2022.2064332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The interactions of ruthenium(II) complex with Glucose inhibited division protein A (GidA protein) was studied through various spectroscopic techniques with the ultimate goal of preparing adducts with good selectivity for cancer cells. In all the cases, formation of a tight metal-protein conjugate was observed. The influence of pH, reducing agents and chelators on the formation of adduct was analysed by UV- visible spectroscopy. While there was no effect on the addition of sodium ascorbate, some alterations on some selected bands were seen on the UV-visible spectra on the addition of EDTA. The adduct was stable in the pH range of 5-8. Addition of ruthenium(II) complex effectively quenched the intrinsic fluorescence of GidA and it occurred through static quenching. The effect of ruthenium(II) complex on the conformation of GidA has been examined by analyzing CD spectrum. Though, there was some conformational changes observed in the presence of ruthenium(II) complex, α- helix in the secondary structure of GidA retained its identity. Molecular docking of ruthenium(II) complex with GidA also indicated that GidA docks through hydrophobic interaction. The stable semisynthetic complex (ruthenium(II) complex with GidA) was checked for topoisomerase II inhibition. Relaxation and decatenation assay proved topoisomerase II inhibition of semisynthetic complex.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Antony K Teresa Infanta S
- Cancer Therapeutics Lab, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India.,Department of Biotechnology, New Prince Shri Bhavani Arts and Science College, Chennai, Tamil Nadu, India
| | - Nisshanthini Durairaju
- Cancer Therapeutics Lab, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Senthil Raja
- Department of Chemistry, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Thandeeswaran Murugesan
- Cancer Therapeutics Lab, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Anand Raj Dhanapal
- Department of Biotechnology, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India
| | | | - Ajithkumar Balakrishnan
- Molecular Genomics Laboratory, Department of Bioinformatics, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Hemamalini Vedagiri
- Molecular Genomics Laboratory, Department of Bioinformatics, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Palaniswamy Muthusamy
- Department of Microbiology, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India
| | - Angayarkanni Jayaraman
- Cancer Therapeutics Lab, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
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Zhang H, Min S, Zhang L, Li L. Design, synthesis and protein-binding character of an acylhydrazone anticancer candidate. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Nagtilak M, Pawar S, Labade S, Khilare C, Sawant S. Study of the binding interaction between bovine serum albumin and carbofuran insecticide: Multispectroscopic and molecular docking techniques. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Żamojć K, Wyrzykowski D, Chmurzyński L. On the Effect of pH, Temperature, and Surfactant Structure on Bovine Serum Albumin-Cationic/Anionic/Nonionic Surfactants Interactions in Cacodylate Buffer-Fluorescence Quenching Studies Supported by UV Spectrophotometry and CD Spectroscopy. Int J Mol Sci 2021; 23:ijms23010041. [PMID: 35008466 PMCID: PMC8744808 DOI: 10.3390/ijms23010041] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/12/2021] [Accepted: 12/20/2021] [Indexed: 01/19/2023] Open
Abstract
Due to the fact that surfactant molecules are known to alter the structure (and consequently the function) of a protein, protein–surfactant interactions are very important in the biological, pharmaceutical, and cosmetic industries. Although there are numerous studies on the interactions of albumins with surfactants, the investigations are often performed at fixed environmental conditions and limited to separate surface-active agents and consequently do not present an appropriate comparison between their different types and structures. In the present paper, the interactions between selected cationic, anionic, and nonionic surfactants, namely hexadecylpyridinium chloride (CPC), hexadecyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS), polyethylene glycol sorbitan monolaurate, monopalmitate, and monooleate (TWEEN 20, TWEEN 40, and TWEEN 80, respectively) with bovine serum albumin (BSA) were studied qualitatively and quantitatively in an aqueous solution (10 mM cacodylate buffer; pH 5.0 and 7.0) by steady-state fluorescence spectroscopy supported by UV spectrophotometry and CD spectroscopy. Since in the case of all studied systems, the fluorescence intensity of BSA decreased regularly and significantly under the action of the surfactants added, the fluorescence quenching mechanism was analyzed thoroughly with the use of the Stern–Volmer equation (and its modification) and attributed to the formation of BSA–surfactant complexes. The binding efficiency and mode of interactions were evaluated among others by the determination, comparison, and discussion of the values of binding (association) constants of the newly formed complexes and the corresponding thermodynamic parameters (ΔG, ΔH, ΔS). Furthermore, the influence of the structure of the chosen surfactants (charge of hydrophilic head and length of hydrophobic chain) as well as different environmental conditions (pH, temperature) on the binding mode and the strength of the interaction has been investigated and elucidated.
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Green synthesis and characterization of heterostructure MnO-FeO nanocomposites to study the effect on oxidase enzyme mimicking, HSA binding interaction and cytotoxicity. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Shao J, Zhang Q, Wei J, Yuchi Z, Cao P, Li SQ, Wang S, Xu JY, Yang S, Zhang Y, Wei JX, Tian JL. Synthesis, crystal structures, anticancer activities and molecular docking studies of novel thiazolidinone Cu(II) and Fe(III) complexes targeting lysosomes: special emphasis on their binding to DNA/BSA. Dalton Trans 2021; 50:13387-13398. [PMID: 34473154 DOI: 10.1039/d1dt02180j] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Novel [CuL2Cl]Cl·H2O (1) and [FeL2Cl2]Cl·MeOH·CHCl3·H2O (2) complexes of (Z)-N'-((E)-3-methyl-4-oxothiazolidin-2-ylidene)picolinohydrazonamide (L) as antitumor agents were designed and synthesized in order to explore DNA and serum albumin interaction. X-ray diffraction revealed that both 1 and 2 were a triclinic crystal system with P1̄ space group, which consisted of a positive electric main unit, a negative chloride ion and some solvent molecules. The complexes with DNA and bovine serum albumin (BSA) were studied by fluorescence and electronic absorption spectrometry. The results indicated that there was moderate intercalative binding mode between the complexes and DNA with Kapp values of 2.40 × 105 M-1 (1) and 6.49 × 105 M-1 (2). Agarose gel electrophoresis experiment showed that both 1 and 2 exhibited obvious DNA cleavage activity via an oxidative DNA damage pathway, and the cleavage activities of 1 were stronger than those of 2. Cytotoxicity assay showed that 1 had a more effective antitumor activity than 2. The two complexes were bound to BSA by a high affinity and quenched the fluorescence of BSA through a static mechanism. The thermodynamic parameters suggested that hydrophobic interactions played a key role in the binding process. The binding energy xpscore of 1 and 2 were -10.529 kcal mol-1 and -10.826 kcal mol-1 by docking studies, and this suggested that the binding process was spontaneous. Complex 1 displayed a lysosome-specific targeting behavior with a Pearson coefficient value of 0.82 by confocal laser scanning microscopy (CLSM), and accumulated in the lysosomes, followed by the disruption of lysosomal integrity.
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Affiliation(s)
- Jia Shao
- Department of Pharmacy, Tianjin First Central Hospital, Tianjin 300192, P. R. China.
| | - Qiang Zhang
- College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Jing Wei
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Zhiguang Yuchi
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Peng Cao
- Key Laboratory of Drug Targets and Drug Leads for Degenerative Diseases, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Shao-Qing Li
- College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Shan Wang
- Department of Pharmacy, Tianjin First Central Hospital, Tianjin 300192, P. R. China.
| | - Jing-Yuan Xu
- School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
| | - Shuang Yang
- Medical College of Nankai University, Tianjin 300071, P. R.China
| | - Yi Zhang
- Department of Pharmacy, Tianjin First Central Hospital, Tianjin 300192, P. R. China.
| | - Jin-Xia Wei
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, P. R. China.
| | - Jin-Lei Tian
- College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
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Yanti S, Wu ZW, Agrawal DC, Chien WJ. Interaction between phloretin and insulin: a spectroscopic study. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-021-00284-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
AbstractDiabetes is among the top ten deadly diseases in the world. It occurs either when the pancreas does not produce enough insulin (INS) or when the body cannot effectively use the insulin it produces. Phloretin (PHL) has a biological effect that can treat diabetes. A spectroscopic study was carried out to explore the interaction between phloretin and insulin. UV/Vis spectroscopy, fluorescence spectroscopy, and circular dichroism spectropolarimeter were used in the study. UV/Vis spectra showed that the interaction between PHL and INS produced strong absorption at a wavelength of 282 nm. The fluorescence analysis results showed that the excitation and emission occurred at 280-nm and 305-nm wavelengths, respectively. Temperature changes did not affect INS emissions. However, the interaction of PHL–INS caused a redshift at 305 to 317 nm. Temperature affected the binding constant (Ka) and the binding site (n). Ka decreased with increasing temperature and increased the binding site. The thermodynamic parameters such as enthalpy (ΔH0) and entropy (ΔS0) each had a value of − 16,514 kJ/mol and 22.65 J/mol·K. PHL and INS interaction formed hydrogen bonds and hydrophobic interaction. The free energy (ΔG0) recorded was negative. PHL and INS interactions took place spontaneously. The quenching effect was dynamic and static. KD values were greater than KS. The higher the temperature, the less was KD and KS. The appearance of two negative signals on circular dichroism (CD) spectropolarimeter implies that phloretin could induce regional configuration changes in insulin. The addition of PHL has revealed that the proportion of α-helix in the insulin stabilizes its structure. Phloretin’s stabilization and enhancement of the α-helix structural configuration in insulin indicate that phloretin can improve insulin resistance.
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An investigation of the effect of PVP-coated silver nanoparticles on the interaction between clonazepam and bovine serum albumin based on molecular dynamics simulations and molecular docking. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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Srinivasan V, Khamrang T, Ponraj C, Saravanan D, Yamini R, Bera S, Jhonsi MA. Pyrene based Schiff bases: Synthesis, crystal structure, antibacterial and BSA binding studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129153] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Sharma A, Ghosh KS. Studies on Molecular Interactions between Bovine β-Lactoglobulin and Silver Nanoparticles. Protein Pept Lett 2021; 27:793-800. [PMID: 32003652 DOI: 10.2174/0929866527666200129123018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/07/2019] [Accepted: 12/09/2019] [Indexed: 01/19/2023]
Abstract
BACKGROUND Silver Nanoparticles (AgNPs) were found to modulate the fibrillation of Bovine Β-Lactoglobulin (BLG). OBJECTIVE To gain an insight regarding the mechanism of BLG aggregation modulation by AgNPs at molecular level, studies on the interactions between BLG and AgNPs were carried out. METHODS Protein-ligand interactions were studied based on Trp fluorescence quenching (at four different temperatures), synchronous and three-dimensional fluorescence and circular dichroism spectroscopy (far-UV and near-UV). RESULTS Protein-nanoparticles association constant was in the range of 106 -1010 M-1 and the quenching constant was determined as ~107 M-1. Ground state complexation between the protein and nanoparticles was predicted. Change in polarity surrounding the Trp residue was not detected by synchronous and three-dimensional fluorescence spectroscopy. AgNPs caused a global change in the secondary and tertiary structure of the protein as revealed from far-UV and near-UV CD spectroscopy. Enthalpy driven complexation between the protein and nanoparticles indicates the involvement of hydrogen bonding and/or van der Waals interactions. CONCLUSION Modulation of BLG aggregation by AgNPs is due to strong binding of the nanoparticles with BLG, which also causes structural perturbations of the protein.
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Affiliation(s)
- Anchal Sharma
- Department of Chemistry, National Institute of Technology, Hamirpur, Himachal Pradesh 177005, India
| | - Kalyan Sundar Ghosh
- Department of Chemistry, National Institute of Technology, Hamirpur, Himachal Pradesh 177005, India
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Mondal P, Sengupta P, Pal U, Saha S, Bose A. Biophysical and theoretical studies of the interaction between a bioactive compound 3,5-dimethoxy-4-hydroxycinnamic acid with calf thymus DNA. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118936. [PMID: 32977108 DOI: 10.1016/j.saa.2020.118936] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 08/12/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
3,5-Dimethoxy-4-hydroxycinnamic acid commonly known as Sinapic acid is a well-known derivative of hydroxycinnamic acids, is commonly present in human diet. Due to its wide variety of pharmacological activities like antioxidant, antimicrobial, anti-inflammatory, anticancer, and anti-anxiety, it has attracted much attention for the researchers. In our previous published work we have already analyzed the interaction between sinapic acid (SA) with a model transport protein. In this work our aim is to demonstrate a detailed investigation of the binding interaction between sinapic acid with another carrier of genetic information in a living cell, the DNA. Here we have used calf thymus DNA (ct-DNA) as a model. The binding characteristic of SA with ct-DNA was investigated by different spectroscopic and theoretical tools. The spectroscopic investigation revealed that quenching of intrinsic fluorescence of SA by ct-DNA occurs through dynamic quenching mechanism. The thermodynamic parameters established the involvement of hydrogen bonding and weak van der Waals forces in the interaction. Further, the circular dichroism, competitive binding experiment with ethidium bromide and potassium iodide quenching experiment suggested that SA possibly binds to the groove position of the ct-DNA. Finally, molecular docking analysis established the SA binds to minor groove position of ct-DNA in G-C rich region through hydrogen bonding interaction. Additionally, gel electrophoresis analysis has been performed to determine the protective efficacy of SA against UVB induced DNA damage and 50 μM of SA was found to protect the DNA from UVB induced damage. We hope that our study could provide the validation of SA on behalf of therapeutics and development of next generation therapeutic drug as well as designing new efficient drug molecule and methodology for the interaction study of the drug with DNA.
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Affiliation(s)
- Prasenjit Mondal
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, West Bengal, India
| | - Priti Sengupta
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, West Bengal, India
| | - Uttam Pal
- Technical Research Centre, S.N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata, India
| | - Sutapa Saha
- Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata, West Bengal, India
| | - Adity Bose
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, West Bengal, India.
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Macii F, Biver T. Spectrofluorimetric analysis of the binding of a target molecule to serum albumin: tricky aspects and tips. J Inorg Biochem 2020; 216:111305. [PMID: 33261935 DOI: 10.1016/j.jinorgbio.2020.111305] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/21/2020] [Accepted: 11/07/2020] [Indexed: 12/18/2022]
Abstract
Protein binding heavily modulates drug activity. Therefore, the binding features need to be elucidated when chemistry researchers study new molecules (metal complexes) to be used as drugs. This paper concerns the experimental and data treatment aspects of the mechanistic analysis of the binding to a fluorescent protein (the golden standard serum albumin) by using direct fluorescence titrations. Fluorescence data are not rarely only qualitatively used, neglecting further treatments which could offer a precious detailed picture of the behavior of the drug. We aim to spread a mechanistic approach, discussing the critical aspects for correctly designing the experiments and treating the data. The researcher may confirm adduct formation and evaluate binding constants (Stern-Volmer KSV or other types of K). Also, we discuss here, with the help of literature examples, the correct use of temperature dependence of K to extract thermodynamic parameters, comment on enthalpy-entropy compensation, together with the use of synchronous spectra and exchange experiments to gain information on the binding type and site. We think that this tutorial/critical synopsis can be of help for the increasing community dealing with these experiments, which are valuable but often much more tricky than it might appear at first sight.
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Affiliation(s)
- Francesca Macii
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy
| | - Tarita Biver
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy; Department of Pharmacy, University of Pisa, Pisa, Italy.
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15
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Stojanović SD, Nićiforović JM, Živanović SM, Odović JV, Jelić RM. Spectroscopic studies on the drug–drug interaction: the influence of fluoroquinolones on the affinity of tigecycline to human serum albumin and identification of the binding site. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02627-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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16
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17
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Rana S, Ghosh KS. Inhibition of fibrillation of human γd-crystallin by a flavonoid morin. J Biomol Struct Dyn 2020; 39:4279-4289. [PMID: 32469293 DOI: 10.1080/07391102.2020.1775701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
To inhibit the formation of amyloid fibrils by human γd-crystallin (HGD), a series of four flavonoids (quercertin, rutin, morin and hesperetin) was tested. Only morin had demonstrated significant inhibition of HGD fibrillation. Results from fluorimetric assay techniques (using thioflavin T and ANS), FTIR, circular dichroism and microscopic imaging (fluorescence microscopy and transmission electron microscopy) confirmed HGD fibrillation inhibition by morin. HGD-morin complex formation at ground state resulted tryptophan fluorescence quenching through static mechanism, which was also confirmed by determining the excited-state life time of HGD tryptophan residues. Förster resonance energy transfer occurs from HGD to morin. Synchronous, three-dimensional fluorescence, FTIR and circular dichroism results suggest that major changes in HGD conformation did not occur on binding with morin. The interactions between HGD and morin involve hydrogen bonding and/or van der Waals forces. Docking predictions also support experimental results.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shiwani Rana
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur, Himachal Pradesh, India
| | - Kalyan Sundar Ghosh
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur, Himachal Pradesh, India
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Wang L, Dong J, Li R, Zhao P, Kong J, Li L. Elucidation of binding mechanism of dibutyl phthalate on bovine serum albumin by spectroscopic analysis and molecular docking method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 230:118044. [PMID: 31954361 DOI: 10.1016/j.saa.2020.118044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/04/2020] [Accepted: 01/06/2020] [Indexed: 06/10/2023]
Abstract
Dibutyl phthalate has been illegally used in beverages and directly affects the human health. Herein, the interaction occurred between dibutyl phthalate and bovine serum albumin was studied. The experimental results demonstrated that dibutyl phthalate could bind to bovine serum albumin and statically quench the intrinsic fluorescence of this protein. Circular dichroism measurements proved that the binding of dibutyl phthalate would lead to an obvious decrease of α-helix content in the bovine serum albumin. Molecular docking analysis clarified the fluorescence quenching mechanism, size distribution and zeta potential variation, conformational change of BSA, the site marker competitive fluorescence quenching and the interaction mechanism of dibutyl phthalate to bovine serum albumin. This work provided a useful information for the binding of dibutyl phthalate to protein.
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Affiliation(s)
- Lei Wang
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Jianfang Dong
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China; Department of Material Science, Shandong Polytechnic Technician College, Liaocheng 252027, China
| | - Rui Li
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Peiran Zhao
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Jinming Kong
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing 210094, China
| | - Lianzhi Li
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China.
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19
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Rana S, Sarmah S, Singha Roy A, Ghosh KS. Elucidation of molecular interactions between human γD-crystallin and quercetin, an inhibitor against tryptophan oxidation. J Biomol Struct Dyn 2020; 39:1811-1818. [DOI: 10.1080/07391102.2020.1738960] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Shiwani Rana
- Department of Chemistry, National Institute of Technology Hamirpur, Himachal Pradesh, India
| | - Sharat Sarmah
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong, India
| | - Atanu Singha Roy
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong, India
| | - Kalyan Sundar Ghosh
- Department of Chemistry, National Institute of Technology Hamirpur, Himachal Pradesh, India
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20
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Rana S, Ghosh KS. Explication of human γD-crystallin interactions with its aggregation inhibitor Schiff base at molecular level. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Bai J, Sun X, Ma X. Interaction of tebuconazole with bovine serum albumin: determination of the binding mechanism and binding site by spectroscopic methods. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2020; 55:509-516. [PMID: 32037956 DOI: 10.1080/03601234.2020.1725358] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study investigates the interaction between tebuconazole and bovine serum albumin (BSA) in a physiological buffer (pH = 7.4) using the fluorescence quenching method to obtain the apparent binding constants (K) and number of binding sites (n) in the interaction between tebuconazole and BSA. The results revealed that tebuconazole can quench the intrinsic fluorescence of BSA through a static quenching procedure. It also shows that the thermodynamic parameters of enthalpy change (ΔH) and entropy change (ΔS) are negative, indicating that the interaction of tebuconazole with BSA is mainly driven by van der Waals forces and hydrogen bonds. The process of binding was a spontaneous process in which Gibbs free energy change was negative. The distance of r between the donor (BSA) and acceptor (tebuconazole) was calculated to be 0.68 nm based on Forster's non-radiative energy transfer theory. Analysis of synchronous fluorescence, three-dimensional fluorescence and circular dichroism (CD) spectra demonstrates that tebuconazole can induce conformational changes of BSA.
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Affiliation(s)
- Jie Bai
- College of Environmental Science, Liaoning University, Shenyang, People's Republic of China
| | - Xuekai Sun
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, People's Republic of China
| | - Xiping Ma
- College of Environmental Science, Liaoning University, Shenyang, People's Republic of China
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22
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Zarei L, Asadi Z, Eigner V, Dusek M. Crystal structure of a supramolecular dimer of Co(III) complex and evaluation of the DNA /BSA interaction. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Tayyab S, Min LH, Kabir MZ, Kandandapani S, Ridzwan NFW, Mohamad SB. Exploring the interaction mechanism of a dicarboxamide fungicide, iprodione with bovine serum albumin. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-01015-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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24
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Zarei L, Asadi Z, Samolova E, Dusek M. Preparation of a dimer from self-complementary of cobalt(III) complex with dissymmetric compartmental ligand and study of the interaction of the complex with DNA and BSA. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1694148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Leila Zarei
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, Iran
| | - Zahra Asadi
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, Iran
| | - Erika Samolova
- Institute of Physics, ASCR, Prague, Czech Republic
- Department of Inorganic Chemistry, Pavol Jozef Šafárik University in Košice, Slovak Republic Košice
| | - Michal Dusek
- Institute of Physics, ASCR, Prague, Czech Republic
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25
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Rana S, Ghosh KS. Protective role of hesperetin against posttranslational oxidation of tryptophan residue of human γD-crystallin: A molecular level study. Arch Biochem Biophys 2019; 679:108204. [PMID: 31758928 DOI: 10.1016/j.abb.2019.108204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/30/2019] [Accepted: 11/19/2019] [Indexed: 11/19/2022]
Abstract
Crystallin proteins undergo various posttranslational modifications with aging of eye lens. Oxidation of tryptophan (Trp) residues of a major γ-crystallin namely human γD-crystallin (HGD) was found to be inhibited by a naturally occurring flavonoid hesperetin at relatively low concentration mostly due to its antioxidant activity. Further the molecular interactions between HGD and hesperetin were elucidated on the basis of the quenching of Trp fluorescence of the protein by the flavonoid. Ground state complexation between HGD and hesperetin caused static quenching of the Trp fluorescence of HGD. Binding and quenching constants were in the order of (103- 104 M-1). Energy transfer from protein to hesperetin was suggested by FRET calculations. Thermodynamic parameters reveal significant hydrophobic association between the protein and hesperetin. Synchronous fluorescence and CD spectroscopic results had ruled out conformational changes in the protein due to binding of hesperetin. Docking studies suggested the proximity of hesperetin with Trp 42, which largely corroborates our experimental findings.
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Affiliation(s)
- Shiwani Rana
- Department of Chemistry, National Institute of Technology Hamirpur, Himachal Pradesh, 177005, India
| | - Kalyan Sundar Ghosh
- Department of Chemistry, National Institute of Technology Hamirpur, Himachal Pradesh, 177005, India.
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26
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Sonthanasamy RSA, Sulaiman NMN, Tan LL, Lazim AM. Comprehensive spectroscopic studies of synergism between Gadong starch based carbon dots and bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 218:85-96. [PMID: 30954801 DOI: 10.1016/j.saa.2019.03.108] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/28/2019] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
Carbon dots (C-dots) were used to study the binding mechanisms with serum protein, bovine serum albumin (BSA) by using two notable binding systems known as non-covalent and covalent interaction. Interaction between C-dots and BSA were estimated by Stern-Volmer equation and Double Log Regression Model (DLRM). According to the fluorescent intensity, quenching of model carrier protein by C-dots was due to dynamic quenching for non-covalent and static quenching for covalent binding. The binding site constant, KA and number of binding site, for covalent interaction is 1754.7L/mol and n≈1 (0.6922) were determined by DLRM on fluorescence quenching results. The blue shift of the fluorescence spectrum, from 450nm to 421nm (non-covalent) and 430nm (covalent) and suggested that both the microenvironment of C-dots and protein changed in relation to the protein concentration. The fluorescence intensity results show that protein structure has a significant role in Protein-C-dots interactions and type of binding influence physicochemical properties of C-dots differently. Understanding to this bio interface is important to utilize both quantum dots and biomolecules for biomedical field. It can be a useful guideline to design further applications in biomedical and bioimaging.
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Affiliation(s)
- Regina Sisika A Sonthanasamy
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Nik Muslihuddin Nik Sulaiman
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Ling Ling Tan
- Southest Asia Disaster Preventation Research Initiative (SEADPRI-UKM), Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Azwan Mat Lazim
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
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27
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Lee WQ, Ahamed Kameel NI, Mohamad S, Tayyab S. Comparison of pendimethalin binding properties of serum albumins from various mammalian species. TURKISH JOURNAL OF BIOCHEMISTRY 2019. [DOI: 10.1515/tjb-2018-0031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Background
To investigate the interaction of pendimethalin (PM), a commonly used herbicide, with various mammalian serum albumins.
Methods
The interactions of PM with serum albumins of bovine (BSA), sheep (SSA), porcine (PSA) and rabbit (RbSA) were studied using fluorescence quenching titration and site marker displacement experiments.
Results
A comparison of the PM-induced quenching of the fluorescence of these albumins with that published for human serum albumin (HSA) showed similarity between BSA and HSA. The PM binding affinity of these albumins was found to follow the order: SSA>BSA>RbSA>PSA. Warfarin (WFN) displacement results also suggested similar displacing action of PM on WFN-BSA complex, when compared to the published results on WFN-HSA complex.
Conclusion
The results suggested close similarity between BSA and HSA in terms of PM binding characteristics and hence bovine can be selected as a suitable animal model for further toxicological studies of PM.
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28
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Raghav D, Mahanty S, Rathinasamy K. Biochemical and toxicological investigation of karanjin, a bio-pesticide isolated from Pongamia seed oil. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 157:108-121. [PMID: 31153458 DOI: 10.1016/j.pestbp.2019.03.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 02/06/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
Karanjin, a furanoflavonol from Pongamia pinnata L is used in agricultural practices for its pesticidal, insecticidal and acaricidal activities. It is commercially available as a bio-pesticide targeting a wide variety of pests. The present study was intended to evaluate the biochemical interactions of karanjin with bovine serum albumin (BSA) and study its toxicological effects on mammalian and bacterial cell lines. Karanjin bound to BSA at a single site with a dissociation constant of 19.7 μM. Evaluation of BSA-karanjin interactions at three different temperatures indicated the involvement of static mode of quenching. Binding experiments in the presence of warfarin and computational docking analysis indicated that karanjin bound closer to the warfarin binding site located in the Subdomain IIA of BSA. Using Förster resonance energy transfer analysis the distance between TRP 213 of BSA and karanjin was found to be 20 Å. Collective results from synchronous fluorescence spectra analysis, differential scanning calorimetry, and circular dichroism analysis indicated that binding of karanjin induced conformational changes in the secondary structure of BSA. Karanjin exhibited low toxicity against human cervical cancer cells and normal mouse fibroblast L929 cells and modestly inhibited the growth of B. subtilis and E. coli cells. The data presented in this study provides insights for understanding the binding interactions of karanjin with BSA and its possible toxicological effects on mammalian cell lines and bacteria.
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Affiliation(s)
- Darpan Raghav
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India
| | - Susobhan Mahanty
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India
| | - Krishnan Rathinasamy
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India.
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29
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Mohankumar A, Devagi G, Shanmugam G, Nivitha S, Sundararaj P, Dallemer F, Kalaivani P, Prabhakaran R. Organoruthenium(II) complexes attenuate stress in Caenorhabditis elegans through regulating antioxidant machinery. Eur J Med Chem 2019; 168:123-133. [PMID: 30818174 DOI: 10.1016/j.ejmech.2019.02.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/07/2019] [Accepted: 02/09/2019] [Indexed: 11/28/2022]
Abstract
The 1:1 stoichiometric reactions of 3-methoxy salicylaldehyde-4(N)-substituted thiosemicarbazones (H2L1-4) with [RuCpCl(PPh3)2] was carried out in methanol. The obtained complexes (1-4) were characterized by analytical, IR, absorption and 1H NMR spectroscopic studies. The structures of ligand [H2-3MSal-etsc] (H2L3) and complex [RuCp(Msal-etsc) (PPh3)] (3), were characterized by single crystal X-ray diffraction studies. The interaction of the ruthenium(II) complexes (1-4) with calfthymus DNA (CT-DNA) has been explored by absorption and emission titration methods. Based on the observations, an intercalative binding mode of DNA has been proposed. The protein binding abilities of the new complexes were monitored by quenching the tryptophan and tyrosine residues of BSA, as model protein. From the studies, it was found that the new ruthenium metallacycles exhibited better affinity than their precursors. The free radical scavenging assay suggests that all complexes effectively scavenged the DPPH radicals as compared to that of standard control ascorbic acid and scavenging activities of complexes are in the order of 4 > 2 > 3 > 1. In addition, ruthenium(II) complexes (2-4) also exhibited an excellent in vivo antioxidant activity as it was able to increase the survival of worms exposed to lethal oxidative and thermal stresses possibly through reducing the intracellular ROS levels. It was interesting to note that complexes 2-4 failed to increase the lifespan of mev-1 mutant worms having shortened lifespan due to the over production of free radicals. This data confirmed that complexes 2-4 conferred stress resistance in C. elegans, but they also require an endogenous detoxification mechanism for doing so. The genetic and reporter gene expression analysis revealed that complexes 2-4 maintained the intracellular redox status and offered stress protection through transactivation of antioxidant defence machinery genes gst-4 and sod-3 which are directly regulated by SKN-1 and DAF-16 transcription factors, respectively. Altogether, our results suggested that complexes 2-4 might play a crucial role in stress modulation and they perhaps exert almost similar effects in higher models, which is an important issue to be validated in future.
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Affiliation(s)
- A Mohankumar
- Department of Zoology, Bharathiar University, Coimbatore, 641 046, Tamilnadu, India
| | - G Devagi
- Department of Chemistry, Bharathiar University, Coimbatore, 641 046, Tamilnadu, India
| | - G Shanmugam
- Department of Zoology, Bharathiar University, Coimbatore, 641 046, Tamilnadu, India
| | - S Nivitha
- College of Science, Northeastern University, Boston, MA, 02115, USA
| | - P Sundararaj
- Department of Zoology, Bharathiar University, Coimbatore, 641 046, Tamilnadu, India
| | - F Dallemer
- Laboratoire MADIREL CNRS UMR7246, Université of Aix-Marseille, Centre de Saint-Jérôme, bât. MADIREL, 13397, Marseille cedex 20, France
| | - P Kalaivani
- Department of Chemistry, Nirmala College for Women, Bharathiar University, Tamilnadu, Coimbatore, 641018, India.
| | - R Prabhakaran
- Department of Zoology, Bharathiar University, Coimbatore, 641 046, Tamilnadu, India.
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30
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Siddiqui S, Ameen F, Jahan I, Nayeem SM, Tabish M. A comprehensive spectroscopic and computational investigation on the binding of the anti-asthmatic drug triamcinolone with serum albumin. NEW J CHEM 2019. [DOI: 10.1039/c8nj05486j] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Binding study of triamcinolone with BSA through in vitro and in silico approaches, helping in the development of drugs with better therapeutic efficacy.
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Affiliation(s)
- Sharmin Siddiqui
- Department of Biochemistry, Faculty of Life Sciences
- A.M. University
- Aligarh
- India
| | - Faisal Ameen
- Department of Biochemistry, Faculty of Life Sciences
- A.M. University
- Aligarh
- India
| | - Ishrat Jahan
- Department of Chemistry
- Faculty of Science
- A.M. University
- Aligarh
- India
| | - Shahid M. Nayeem
- Department of Chemistry
- Faculty of Science
- A.M. University
- Aligarh
- India
| | - Mohammad Tabish
- Department of Biochemistry, Faculty of Life Sciences
- A.M. University
- Aligarh
- India
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31
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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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32
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Mukhopadhyay S, Singh RS, Paitandi RP, Sharma G, Koch B, Pandey DS. Influence of substituents on DNA and protein binding of cyclometalated Ir(iii) complexes and anticancer activity. Dalton Trans 2018. [PMID: 28640302 DOI: 10.1039/c7dt01015j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Synthesis of terpyridyl based ligands 3-([2,2':6',2''-terpyridin]-4'-yl)-7-methoxy-2-(methylthio)-quinolone, (L1); 3-([2,2':6',2''-terpyridin]-4'-yl)-6-methoxyquinolin-2(1H)-one, (L2); 3-([2,2'-:6',2''-terpyridin]-4'-yl)-6-methylquinolin-2(1H)-one (L3) and cyclometalated iridium(iii) complexes [[Ir(ppy)2L1]+PF6- (1), [Ir(ppy)2L2]+PF6- (2), [Ir(ppy)2L3]+PF6- (3) (2-phenylpyridine = Hppy)] involving these ligands has been described. The ligands L1-L3 and complexes 1-3 have been thoroughly characterized by elemental analyses, spectral studies (IR, 1H, 13C NMR, UV/vis and fluorescence) ESI-MS, and the structure of 3 has been unambiguously authenticated by single crystal X-ray analyses. UV/vis, fluorescence and circular dichroism spectroscopic studies showed rather efficient binding of 1 with CT-DNA (calf thymus DNA) and BSA (bovine serum albumin) relative to 2 and 3. Molecular docking studies unveiled binding of 1-3 with minor groove of CT-DNA via van der Waal's forces and electrostatically with the hydrophobic moiety of HSA (human serum albumin). The ligands and complexes exhibited moderate cytotoxicity towards MDA-MB-231 (breast cancer cell line) and significant influence on HeLa (cervical cancer cell line) cells. Cytotoxicity, morphological changes, and apoptosis have been followed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide) assay, Hoechst 33342/PI (PI = propidium iodide) staining, cell cycle analysis by FACS (fluorescence activated cell sorting), and ROS (reactive oxygen species) generation by DCFH-DA (dichlorodihydrofluorescein diacetate) dye. Confocal microscopy images revealed that the drug efficiently initiates apoptosis in the cell cytosol. The IC50 values showed superior cytotoxicity of 1-3 against the HeLa cell line relative to cisplatin, and their ability to induce apoptosis is in the order 1 > 2 > 3.
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Affiliation(s)
- Sujay Mukhopadhyay
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, U.P., India.
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33
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Roufegarinejad L, Jahanban-Esfahlan A, Sajed-Amin S, Panahi-Azar V, Tabibiazar M. Molecular interactions of thymol with bovine serum albumin: Spectroscopic and molecular docking studies. J Mol Recognit 2018; 31:e2704. [PMID: 29600590 DOI: 10.1002/jmr.2704] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 01/08/2018] [Accepted: 01/26/2018] [Indexed: 01/28/2023]
Abstract
Thymol is the main monoterpene phenol present in the essential oils which is used in the food industry as flavoring and preservative agent. In this study, the interaction of thymol with the concentration range of 1 to 6 μM and bovine serum albumin (BSA) at fixed concentration of 1 μM was investigated by fluorescence, UV-vis, and molecular docking methods under physiological-like condition. Fluorescence experiments were performed at 5 different temperatures, and the results showed that the fluorescence quenching of BSA by thymol was because of a static quenching mechanism. The obtained binding parameters, K, were in the order of 104 M-1 , and the binding number, n, was approximately equal to unity indicating that there is 1 binding site for thymol on BSA. Calculated thermodynamic parameters for enthalpy (ΔH), entropy (ΔS), and Gibb's free energy (ΔG) showed that the reaction was spontaneous and hydrophobic interactions were the main forces in the binding of thymol to BSA. The results of UV-vis spectroscopy and Arrhenius' theory showed the complex formation in the interaction of thymol and BSA. Negligible conformational changes in BSA by thymol were observed in fluorescence experiments, and the same results were also obtained from UV-vis studies. Results of molecular docking indicated that the subdomain IA of BSA was the binding site for thymol.
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Affiliation(s)
- Leila Roufegarinejad
- Department of Food Sciences, Tabriz branch, Islamic Azad University, Tabriz, Iran
| | - Ali Jahanban-Esfahlan
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Nutrition Research Center, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sanaz Sajed-Amin
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Vahid Panahi-Azar
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahnaz Tabibiazar
- Nutrition Research Center, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Food Science and Technology, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
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34
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Afrin S, Rahman Y, Tabish M. Elucidating the interaction of ticlopidine with serum albumin and its role in bilirubin displacement in vitro. J Biomol Struct Dyn 2018. [DOI: 10.1080/07391102.2018.1449667] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Shumaila Afrin
- Faculty of Life Sciences, Department of Biochemistry, A.M. University, Aligarh 202002, Uttar Pradesh, India
| | - Yusra Rahman
- Faculty of Life Sciences, Department of Biochemistry, A.M. University, Aligarh 202002, Uttar Pradesh, India
| | - Mohammad Tabish
- Faculty of Life Sciences, Department of Biochemistry, A.M. University, Aligarh 202002, Uttar Pradesh, India
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35
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Shanmugapriya A, Dallemer F, Prabhakaran R. Synthesis, characterisation, crystal structures and biological studies of palladium(ii) complexes containing 5-(2-hydroxy-3-methoxy-phenyl)-2,4-dihydro[1,2,4]triazole-3-thione derivatives. NEW J CHEM 2018. [DOI: 10.1039/c8nj03714k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New structurally different palladium(ii) complexes have been synthesized and characterized and evaluated for their cytotoxic nature against human breast cancer cell line (MCF 7) which showed significant activity.
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Affiliation(s)
- A. Shanmugapriya
- Department of Chemistry, Bharathiar University
- Coimbatore 641 046
- India
| | - F. Dallemer
- Lab MADIREL CNRS UMR 7246, Aix Marseille University
- 13397 Marseille Cedex 20
- France
| | - R. Prabhakaran
- Department of Chemistry, Bharathiar University
- Coimbatore 641 046
- India
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36
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Jia J, Wang Y, Liu Y, Xiang Y. Exploration of interaction of canthaxanthin with human serum albumin by spectroscopic and molecular simulation methods. LUMINESCENCE 2017; 33:425-432. [PMID: 29251407 DOI: 10.1002/bio.3430] [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: 06/29/2017] [Revised: 10/18/2017] [Accepted: 10/18/2017] [Indexed: 02/06/2023]
Abstract
The interaction between the food colorant canthaxanthin (CA) and human serum albumin (HSA) in aqueous solution was explored by using fluorescence spectroscopy, three-dimensional fluorescence spectra, synchronous fluorescence spectra, UV-vis absorbance spectroscopy, circular dichroism (CD) spectra and molecular docking methods. The thermodynamic parameters calculated from fluorescence spectra data showed that CA could result in the HSA fluorescence quenching. From the KSV change with the temperature dependence, it was concluded that HSA fluorescence quenching triggered by CA is the static quenching and the number of binding sites is one. Furthermore, the secondary structure of HSA was changed with the addition of CA based on the results of synchronous fluorescence, three-dimensional fluorescence and CD spectra. Hydrogen bonds and van der Waals forces played key roles in the binding process of CA with HSA, which can be obtained from negative standard enthalpy (ΔH) and negative standard entropy (ΔS). Furthermore, the conclusions were certified by molecular docking studies and the binding mode was further analyzed with Discovery Studio. These conclusions can highlight the potential of the interaction mechanism of food additives and HSA.
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Affiliation(s)
- Jie Jia
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yuxian Wang
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yueying Liu
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing, China
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37
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İnci D, Aydın R, Vatan Ö, Zorlu Y, Çinkılıç N. New binary copper(II) complexes containing intercalating ligands: DNA interactions, an unusual static quenching mechanism of BSA and cytotoxic activities. J Biomol Struct Dyn 2017; 36:3878-3901. [DOI: 10.1080/07391102.2017.1404936] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Duygu İnci
- Department of Chemistry, Faculty of Arts and Sciences, Uludag University, Bursa 16059, Turkey
| | - Rahmiye Aydın
- Department of Chemistry, Faculty of Arts and Sciences, Uludag University, Bursa 16059, Turkey
| | - Özgür Vatan
- Department of Biology, Faculty of Arts and Sciences, Uludag University, Bursa 16059, Turkey
| | - Yunus Zorlu
- Department of Chemistry, Gebze Technical University, Gebze 41400, Kocaeli, Turkey
| | - Nilüfer Çinkılıç
- Department of Biology, Faculty of Arts and Sciences, Uludag University, Bursa 16059, Turkey
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38
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Mohan S, Hemachandran H, Sneha P, George Priya Doss C, Godwin Christopher J, Jayaraman G, Ramamoorthy S. Structural insights into the binding mode and conformational changes of BSA induced by bixin and crocin. J Biomol Struct Dyn 2017; 36:2085-2098. [DOI: 10.1080/07391102.2017.1342565] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Sankari Mohan
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Hridya Hemachandran
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - P. Sneha
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - C. George Priya Doss
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - J. Godwin Christopher
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Gurunathan Jayaraman
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Siva Ramamoorthy
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
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39
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Iqbal N, Khan NA, Ferrante A, Trivellini A, Francini A, Khan MIR. Ethylene Role in Plant Growth, Development and Senescence: Interaction with Other Phytohormones. FRONTIERS IN PLANT SCIENCE 2017; 8:475. [PMID: 28421102 PMCID: PMC5378820 DOI: 10.3389/fpls.2017.00475] [Citation(s) in RCA: 308] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 03/17/2017] [Indexed: 05/18/2023]
Abstract
The complex juvenile/maturity transition during a plant's life cycle includes growth, reproduction, and senescence of its fundamental organs: leaves, flowers, and fruits. Growth and senescence of leaves, flowers, and fruits involve several genetic networks where the phytohormone ethylene plays a key role, together with other hormones, integrating different signals and allowing the onset of conditions favorable for stage progression, reproductive success and organ longevity. Changes in ethylene level, its perception, and the hormonal crosstalk directly or indirectly regulate the lifespan of plants. The present review focused on ethylene's role in the development and senescence processes in leaves, flowers and fruits, paying special attention to the complex networks of ethylene crosstalk with other hormones. Moreover, aspects with limited information have been highlighted for future research, extending our understanding on the importance of ethylene during growth and senescence and boosting future research with the aim to improve the qualitative and quantitative traits of crops.
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Affiliation(s)
| | - Nafees A. Khan
- Plant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim UniversityAligarh, India
| | - Antonio Ferrante
- Department of Agricultural and Environmental Sciences, Università degli Studi di MilanoMilano, Italy
| | - Alice Trivellini
- Institute of Life Sciences, Scuola Superiore Sant’AnnaPisa, Italy
| | | | - M. I. R. Khan
- Crop and Environmental Sciences Division, International Rice Research InstituteManila, Philippines
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40
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Singla P, Luxami V, Paul K. Quinazolinone-benzimidazole conjugates: Synthesis, characterization, dihydrofolate reductase inhibition, DNA and protein binding properties. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 168:156-164. [DOI: 10.1016/j.jphotobiol.2017.02.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 01/18/2017] [Accepted: 02/13/2017] [Indexed: 10/20/2022]
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41
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Poureshghi F, Ghandforoushan P, Safarnejad A, Soltani S. Interaction of an antiepileptic drug, lamotrigine with human serum albumin (HSA): Application of spectroscopic techniques and molecular modeling methods. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 166:187-192. [DOI: 10.1016/j.jphotobiol.2016.09.046] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 09/14/2016] [Accepted: 09/17/2016] [Indexed: 11/24/2022]
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42
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Hosseini-Kharat M, Karami K, Saeidifar M, Rizzoli C, Zahedi-Nasab R, Sohrabijam Z, Sharifi T. A novel Pd(ii) CNO pincer complex of MR (methyl red): synthesis, crystal structure, interaction with human serum albumin (HSA) in vitro and molecular docking. NEW J CHEM 2017. [DOI: 10.1039/c7nj01415e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The C–H activation of methyl red (MR) (MR = 2-{[4-(dimethylamino)phenyl]diazenyl}benzoic acid) was achieved by reaction with Pd(OAc)2under mild conditions.
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Affiliation(s)
| | - Kazem Karami
- Department of Chemistry
- Isfahan University of Technology
- Isfahan
- Iran
| | - Maryam Saeidifar
- Department of Nanotechnology and Advanced Materials
- Materials and Energy Research Center
- Karaj
- Iran
| | - Corrado Rizzoli
- Department of Chemistry
- Life Sciences and Environmental Sustainability
- University of Parma
- I-43124 Parma
- Italy
| | | | - Zahra Sohrabijam
- Department of Nanotechnology and Advanced Materials
- Materials and Energy Research Center
- Karaj
- Iran
| | - Tayebeh Sharifi
- Department of Chemistry
- Isfahan University of Technology
- Isfahan
- Iran
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43
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Li CH, Tao X, Jiang JH, Li X, Xiao SX, Tao LM, Zhou JF, Zhang H, Xie MA, Zhu Y, Xia Z, Tang SM, Yuan HM, Li QG. Synthesis, crystal structure and spectroscopic studies of bismuth(III) complex with 2-substituted benzimidazole ligands. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 166:56-61. [PMID: 27208760 DOI: 10.1016/j.saa.2016.04.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 04/16/2016] [Accepted: 04/27/2016] [Indexed: 06/05/2023]
Abstract
Reaction of BiCl3 with 2-(2-hydroxy-3-methoxyphenyl)benzimidazole (HL) in tetrahydrofuran (THF) under reflux gave mononuclear complex of formula [Bi(HL)2Cl3·H2O]. The binding interaction of the complex with bovine serum albumin (BSA) was investigated using the fluorescence quenching method. The experimental results showed that the complex could bind to BSA in the proportion of about 1:1. The binding reaction was spontaneous and hydrophobic force played major role in the reaction. The binding of the complex to BSA could change the microenvironment and conformation of BSA.
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Affiliation(s)
- Chuan-Hua Li
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Xu Tao
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Jian-Hong Jiang
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Xu Li
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Sheng-Xiong Xiao
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Li-Ming Tao
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Ju-Feng Zhou
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Hui Zhang
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Ming-An Xie
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Yi Zhu
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Zi Xia
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Si-Min Tang
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Han-Meng Yuan
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Qiang-Guo Li
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China.
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44
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Zhao P, Wei Q, Dong J, Ding F, Li J, Li L. Synthesis, structure and spectroscopic studies on DNA binding, BSA interaction of a nickel(II) complex containing l–methionine Schiff base and 1,10-phenanthroline. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1206657] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Peiran Zhao
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, PR China
| | - Qiang Wei
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, PR China
| | - Jianfang Dong
- Department of Material Science, Shandong Polytechnic Technician College, Liaocheng, PR China
| | - Feifei Ding
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, PR China
| | - Jinghong Li
- College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, PR China
| | - Lianzhi Li
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, PR China
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45
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Joshi N, Rawat K, Bohidar HB. Influence of Structure, Charge, and Concentration on the Pectin–Calcium–Surfactant Complexes. J Phys Chem B 2016; 120:4249-57. [DOI: 10.1021/acs.jpcb.6b00016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Nidhi Joshi
- Polymer
and Biophysics Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Kamla Rawat
- Special
Center for Nanosciences, Jawaharlal Nehru University, New Delhi 110067, India
- Inter University Accelerator Centre (IUAC), New Delhi 110067, India
| | - H. B. Bohidar
- Polymer
and Biophysics Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
- Special
Center for Nanosciences, Jawaharlal Nehru University, New Delhi 110067, India
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46
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Gupta RK, Kumar A, Paitandi RP, Singh RS, Mukhopadhyay S, Verma SP, Das P, Pandey DS. Heteroleptic arene Ru(ii) dipyrrinato complexes: DNA, protein binding and anti-cancer activity against the ACHN cancer cell line. Dalton Trans 2016; 45:7163-77. [DOI: 10.1039/c6dt00446f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The in vitro cytotoxicities of heteroleptic Ru(ii) complexes were studied in ACHN cell lines by MTT assay, DNA cleavage, (AO/EtBr) and FACS analysis.
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Affiliation(s)
- Rakesh Kumar Gupta
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Amit Kumar
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | | | - Roop Shikha Singh
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Sujay Mukhopadhyay
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Shiv Prakash Verma
- Centre for Genetic Disorders
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Parimal Das
- Centre for Genetic Disorders
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Daya Shankar Pandey
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
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47
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Kumar A, Kumar A, Gupta RK, Paitandi RP, Singh KB, Trigun SK, Hundal MS, Pandey DS. Cationic Ru(II), Rh(III) and Ir(III) complexes containing cyclic -perimeter and 2-aminophenyl benzimidazole ligands: Synthesis, molecular structure, DNA and protein binding, cytotoxicity and anticancer activity. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.10.008] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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48
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DNA Binding, Photonuclease Activity and Human Serum Albumin Interaction of a Water-Soluble Freebase Carboxyl Corrole. Molecules 2015; 21:E54. [PMID: 26729089 PMCID: PMC6274405 DOI: 10.3390/molecules21010054] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/21/2015] [Accepted: 12/24/2015] [Indexed: 01/20/2023] Open
Abstract
The DNA binding property of 5,10,15-Tris(4-carboxyphenyl) corrole (TCPC) was studied by UV-Visible, fluorescence and circular dichroism (CD) spectroscopic methods. TCPC can bind to ct-DNA via an outside binding mode with the binding constant of Kb = 1.05 × 105 M−1. TCPC also displayed good photonuclease activity, which involves singlet oxygen species (1O2). The binding constant between TCPC and human serum albumin (HSA) is KA = 2.24 × 105 M−1 with a simulated binding distance of 2.06 nm. The fluorescence quenching of HSA by TCPC followed a static quenching process. Site marker competitive displacement experiments indicated that warfarin site I is the main binding site. The secondary structure of HSA was changed upon interaction with TCPC, which was confirmed by UV-Visible and CD spectroscopy.
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49
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Bhuiya S, Pradhan AB, Haque L, Das S. Molecular Aspects of the Interaction of Iminium and Alkanolamine Forms of the Anticancer Alkaloid Chelerythrine with Plasma Protein Bovine Serum Albumin. J Phys Chem B 2015; 120:5-17. [DOI: 10.1021/acs.jpcb.5b07818] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sutanwi Bhuiya
- Department
of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Ankur Bikash Pradhan
- Department
of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Lucy Haque
- Department
of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Suman Das
- Department
of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India
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50
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Akram M, Bhat IA, Anwar S, Kabir-ud-Din. Molecular interaction of an ester-functionalized biodegradable gemini surfactant with lysozyme: Insights from spectroscopy, calorimetry and molecular docking. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.10.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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