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Ding L, Liu Y, Wang L, Yang Y. Distinguishing the responsive mechanisms of fluorescent probes to hydrogen peroxide, proteins, and DNA/RNA. Phys Chem Chem Phys 2024; 26:7765-7771. [PMID: 38372974 DOI: 10.1039/d4cp00082j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
The responsive mechanisms of cationic quinolinium-vinyl-N,N-dimethylaniline boronate (QVD-B) derivative probes to hydrogen peroxide (H2O2), proteins and DNA/RNA are theoretically investigated in this study. The potential energy curves of QVD-B scanned on a dihedral angle (N+-C-CC) in the first singlet (S1) state exhibit large torsional energy barriers. Additionally, the energy of the lowest unoccupied molecular orbital (LUMO) of an acceptor moiety (-3.14 eV) is lower than that of a donor moiety (-1.13 eV) in QVD-B. This demonstrates that photoinduced electron transfer (PET) quenches the fluorescence of QVD-B, as opposed to the previous report of intramolecular single-bond rotation. After reacting with H2O2, the reaction product of quinoline-vinyl-N,N-dimethylaniline (QVD) turns off the PET pathway and turns on the fluorescence at 550 nm, which is consistent with the experimental results (580 nm). Among the possible configurations of QVD-B that forms with proteins and DNA, the calculated fluorescence values of corresponding twisted QVD-B-P (638 nm) and QVD-B-D (686 nm) are consistent with the experimental results (632 and 688 nm). The frontier molecular orbital and electron-hole analysis show that the charge transfer distance follows the order of QVD (1.88 Å) < QVD-B-P (4.49 Å) < QVD-B-D (6.39 Å), which induces the fluorescence red-shifts of QVD-B-P and QVD-B-D compared to that of QVD. The multi-detection mechanism of the fluorescent probe QVD-B is attributed to PET progress and different degrees of local charge transfer after photoexcitation.
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Affiliation(s)
- Lina Ding
- School of Chemistry and Chemical Engineering, School of Physics, Henan Normal University, Xinxiang 453007, P. R. China.
| | - Yang Liu
- School of Chemistry and Chemical Engineering, School of Physics, Henan Normal University, Xinxiang 453007, P. R. China.
| | - Liang Wang
- School of Chemistry and Chemical Engineering, School of Physics, Henan Normal University, Xinxiang 453007, P. R. China.
| | - Yonggang Yang
- School of Chemistry and Chemical Engineering, School of Physics, Henan Normal University, Xinxiang 453007, P. R. China.
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2
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Jamshidian N, Hajiaghasi A, Amirghofran Z, Karami A, Karami K. New anthracene-based Oxime-Palladium complexes loaded on albumin nanoparticles, in vitro cytotoxicity, mathematical release mechanism studies and biological macromolecules interaction investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123513. [PMID: 37864973 DOI: 10.1016/j.saa.2023.123513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/22/2023] [Accepted: 10/08/2023] [Indexed: 10/23/2023]
Abstract
In this research work, two new palladium complexes [trans-Pd(C15H10NOCH3)2]Cl2 (1) and [cis- Pd(C15H10NOCH3)(PPh3)2Cl]Cl (2) were synthesized using an alkoxyme ligand named isophethalaldoxime. Then structure characterization has been done by FT-IR and different NMR (1H, 13C and 31P) spectroscopy. Then, their interactions with biological macromolecules including deoxyribonucleic acid and bovine serum albumin were studied using various spectroscopic methods such as UV-Vis absorption, fluorescence emission spectroscopy and circular dichroism. The results showed the binding of the prepared complexes to the deoxyribonucleic acid via grooves and different binding sites of bovine serum albumin. Fluorescence emission data showed that the mechanism of extinction of albumin emission by these compounds is static. Competitive titration was performed on albumin with eosin-Y, ibuprofen and digoxin as site markers I, II and III. The antitumor activity and toxicity of these compounds were evaluated on cancer cell lines A549 (leukemia) and K562 by in-vitro cytotoxicity test. The IC50 values showed the good activity of these complexes in inhibiting cancer cells. In the last section, the release mechanism of synthesized complexes from albumin nanoparticles (BNPs) was investigated and theoretical calculations were performed that showed Korsmeyer-Peppas mechanism for complex (1) and Quadratic mechanism for complex (2).
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Affiliation(s)
- Nasrin Jamshidian
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156/83111, Iran
| | - Afsaneh Hajiaghasi
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156/83111, Iran
| | - Zahra Amirghofran
- Immunology Department and Autoimmune Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Aida Karami
- Medical school, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Kazem Karami
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156/83111, Iran.
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3
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Sarma D, Medhi A, Mohanta D, Nath P. Electrochemically deposited bimetallic SERS substrate for trace sensing of antibiotics. Mikrochim Acta 2023; 191:14. [PMID: 38087069 DOI: 10.1007/s00604-023-06075-5] [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: 08/07/2023] [Accepted: 10/26/2023] [Indexed: 12/18/2023]
Abstract
Electrochemically deposited bimetallic copper-gold nanoparticles on indium tin oxide (Cu-AuNPs on ITO) glass are demonstrated to be a sensitive and reproducible surface-enhanced Raman scattering (SERS) platform. An optimal signal enhancement with reasonably good degree of homogeneity was obtained by tuning the deposition parameters of the electrochemical setup. For Raman active analytes such as malachite green (MG) and rhodamine 6G (R6G), the developed SERS platform yields a limit of detection (LOD) of 0.75 nM. The usability of the proposed SERS platform has been realized through detection of two important antibiotics namely sulfamethoxazole (SFZ) and tetracycline hydrochloride (TCH) commonly used in egg farms. Furthermore, a machine learning (ML)-based model coupled with a dimensionality reduction technique-principal component analysis (PCA)-has been implemented to classify the targeted analytes in egg samples.
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Affiliation(s)
- Dipjyoti Sarma
- Applied Photonics and Nanophotonics Laboratory, Department of Physics, Tezpur University, Napaam, Tezpur, Assam, 784028, India
| | - Ankush Medhi
- Nanoscience and Soft-Matter Laboratory, Department of Physics, Tezpur University, Napaam, Tezpur, Assam, 784028, India
| | - Dambarudhar Mohanta
- Nanoscience and Soft-Matter Laboratory, Department of Physics, Tezpur University, Napaam, Tezpur, Assam, 784028, India
| | - Pabitra Nath
- Applied Photonics and Nanophotonics Laboratory, Department of Physics, Tezpur University, Napaam, Tezpur, Assam, 784028, India.
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4
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Ning G, Sun Y, Ling J, Chen J, He J. BDN-DDI: A bilinear dual-view representation learning framework for drug-drug interaction prediction. Comput Biol Med 2023; 165:107340. [PMID: 37603959 DOI: 10.1016/j.compbiomed.2023.107340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/23/2023] [Accepted: 08/07/2023] [Indexed: 08/23/2023]
Abstract
Drug-drug interactions (DDIs) refer to the potential effects of two or more drugs interacting with each other when used simultaneously, which may lead to adverse reactions or reduced drug efficacy. Accurate prediction of DDIs is a significant concern in recent years. Currently, the drug chemical substructure-based learning method has substantially improved DDIs prediction. However, we notice that most related works ignore the detailed interaction among atoms when extracting the substructure information of drugs. This problem results in incomplete information extraction and may limit the model's predictive ability. In this work, we proposed a novel framework named BDN-DDI (a bilinear dual-view representation learning framework for drug-drug interaction prediction) to infer potential DDIs. In the proposed framework, the encoder consists of six stacked BDN blocks, each of which extracts the feature representation of drug molecules through a bilinear representation extraction layer. The extracted feature is then used to learn embeddings of drug substructures from the single drug learning layer (intra-layer) and the drug-pair learning layer (inter-layer). Finally, the learned embeddings are fed into a decoder to predict DDI events. Based on our experiments, BDN-DDI has an AUROC value of over 99% for the warm-start task. Additionally, it outperformed the state-of-the-art methods by an average of 3.4% for the cold-start tasks. Finally, our method's effectiveness is further validated by visualizing several case studies.
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Affiliation(s)
- Guoquan Ning
- School of Computer Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuping Sun
- School of Computer Science and Technology, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jie Ling
- School of Computer Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Jijia Chen
- School of Computer Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Jiaxi He
- School of Computer Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
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5
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Tian Z, Ding T, Niu H, Wang T, Zhang Z, Gao J, Kong M, Ming L, Tian Z, Ma J, Luo W, Wang C. 2-Phenylquinoline-polyamine conjugate (QPC): Interaction with bovine serum albumin (BSA). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 300:122875. [PMID: 37276638 DOI: 10.1016/j.saa.2023.122875] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 06/07/2023]
Abstract
A novel 2-phenylquinoline-polyamine conjugate (QPC) was synthesized and characterized, its interaction with bovine serum albumin (BSA) was evaluated using UV-Vis, fluorescence and circular dichroism (CD) spectroscopy. The results showed that QPC caused a whole train of spectral variation, including enhancement of UV-vis absorption and reduction of fluorescence (FL), indicating QPC-BSA complex formed. FL results showed that the type of FL quenching waslarge static quenching, which was also accompanied with a process of dynamic quenching. Binding constants, thermodynamic parameters and docking results showed that the interaction between QPC and BSA was basically a Van der Waals, hydrogen bond and hydrophobic interaction. Synchronous and 3D-FL analysis revealed that QPC resulted in unapparent conformational alteration of BSA. The docking study suggested QPC was situated at the binding sites II of BSA, and 2-phenylquinoline moiety contributed to the hydrophobic interaction. The results of molecular dynamics revealed QPC altered the conformation of BSA, which showed that the inconsistency between experimental data and theoretical calculation results may be due to the instability of the compound.
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Affiliation(s)
- Zhiyong Tian
- Institute for Innovative Drug Design and Evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Tengli Ding
- Institute for Innovative Drug Design and Evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Hanjing Niu
- Institute for Innovative Drug Design and Evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Ting Wang
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China
| | - Zhongze Zhang
- Institute for Innovative Drug Design and Evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Jinhua Gao
- Institute for Innovative Drug Design and Evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Ming Kong
- Institute for Innovative Drug Design and Evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Li Ming
- Institute for Innovative Drug Design and Evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Zhihui Tian
- The National Supercomputing Center in Zhengzhou, Zhengzhou University, Henan 450001, China
| | - Jing Ma
- Institute for Innovative Drug Design and Evaluation, School of Pharmacy, Henan University, Kaifeng 475004, China.
| | - Wen Luo
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
| | - Chaojie Wang
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
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6
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Liu K, Zhang Y, Zhang W, Liu L, Yu Z. A Study on the Interactions of Proteinase K with Myricetin and Myricitrin by Multi-Spectroscopy and Molecular Modeling. Int J Mol Sci 2023; 24:ijms24065317. [PMID: 36982397 PMCID: PMC10048853 DOI: 10.3390/ijms24065317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/28/2023] [Accepted: 03/08/2023] [Indexed: 03/16/2023] Open
Abstract
Myricetin (MYR) and myricitrin (MYT) are well recognized for their nutraceutical value, such as antioxidant, hypoglycemic, and hypotensive effects. In this work, fluorescence spectroscopy and molecular modeling were adopted to investigate the conformational and stability changes of proteinase K (PK) in the presence of MYR and MYT. The experimental results showed that both MYR and MYT could quench fluorescence emission via a static quenching mechanism. Further investigation demonstrated that both hydrogen bonding and van der Waals forces play significant roles in the binding of complexes, which is consistent with the conclusions of molecular modeling. Synchronous fluorescence spectroscopy, Förster resonance energy transfer, and site-tagged competition experiments were performed to prove that the binding of MYR or MYT to PK could alter its micro-environment and conformation. Molecular docking results revealed that either MYR or MYT spontaneously interacted with PK at a single binding site via hydrogen bonding and hydrophobic interactions, which is consistent with the results of spectroscopic measurements. A 30 ns molecular dynamics simulation was conducted for both PK-MYR and PK-MYT complexes. The calculation results showed that no large structural distortions or interaction changes occurred during the entire simulation time span. The average RMSD changes of PK in PK-MYR and PK-MYT were 2.06 and 2.15 Å, respectively, indicating excellent stability of both complexes. The molecular simulation results suggested that both MYR and MYT could interact with PK spontaneously, which is in agreement with spectroscopic results. This agreement between experimental and theoretical results indicates that the method herein could be feasible and worthwhile for protein–ligand complex studies.
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Affiliation(s)
- Kefan Liu
- College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Yubo Zhang
- College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Wei Zhang
- College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Liyan Liu
- College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Zhan Yu
- College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
- Provincial Key Laboratory for Separation and Analysis of Complex Systems in Liaoning Universities, Shenyang Normal University, Shenyang 110034, China
- Correspondence:
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7
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Wang J, Yang B, Yu X, Chen S, Li W, Hong X. The impact of Zn doping on CdTe quantum dots-protein corona formation and the subsequent toxicity at the molecular and cellular level. Chem Biol Interact 2023; 373:110370. [PMID: 36731594 DOI: 10.1016/j.cbi.2023.110370] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/21/2022] [Accepted: 01/26/2023] [Indexed: 01/31/2023]
Abstract
Understanding the formation of protein corona (PC) is of vital importance for exploring the toxicity of nanoparticles and promoting their safe applications. In this study, CdTe QDs doping with 0, 1%, 5% and 10% Zn were synthesized using one-pot hydrothermal methods. Afterwards, this study explored and compared the formation of pure and Zn doped-QDs PC as well as the subsequent molecular and cellular toxicity. Result found that Zn doping regulated the toxicity of Cd-QDs by controlling their ability to adsorb serum proteins. The adsorption to Cd-QDs induced the dispersion, unfolding, secondary structural changes and the activity loss of bovine serum albumin (BSA). Among the synthesized Cd-QDs, 10%Zn-QDs exhibited the highest fluorescence quantum yield and lowest molecular toxicity. The formations of pure QDs and 10%Zn-QDs with BSA corona are majorly driven by different forces with different patterns. The regulation of BSA on the cytotoxicity differences of pure QDs and 10%Zn-QDs was similar with fetal bovine serum, proving the significant contribution of BSA to the cytotoxicity of Cd-QDs PC. Compared with pure QDs PC, the higher cytotoxicity and oxidative stress level of 10%Zn-QDs PC were correlated with higher intracellular [Cd2+]. Both larger amount of BSA adsorption and higher level of intracellular reactive oxygen species could accelerate the dissolution rates of 10%Zn-QDs and thus result in higher intracellular [Cd2+].
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Affiliation(s)
- Jing Wang
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China.
| | - Bin Yang
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China
| | - Xinping Yu
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China
| | - Shuji Chen
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China
| | - Wenxin Li
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China
| | - Xu Hong
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China
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8
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Designing three digital logic circuits based on two-component molecular systems of a combination of BSA and N, N′-bis(salicylidene) - ethylenediamine. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2022.140238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Sharma S, Takkella D, Kumar P, Gavvala K. Spectroscopic analysis to identify the binding site for Rifampicin on Bovine Serum Albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 283:121721. [PMID: 35964352 DOI: 10.1016/j.saa.2022.121721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
This article reports the interaction of rifampicin, one of the important antituberculosis drugs, with Bovine Serum Albumin (BSA). Herein, we have monitored the fluorescence properties of tryptophan (Trp) residue in BSA to understand the interactions between protein and rifampicin. Fluorescence intensity of BSA was quenched tremendously upon interacting with the drug. Using steady state and time-resolved spectroscopic tools the static and dynamic nature of quenching have been characterised. Time correlated single photon counting technique confirmed that out of two lifetime components ∼6.2 ns and ∼2.8 ns of BSA, the rifampicin has affected only the shorter lifetime component a lot that was assigned to Trp-213 residue. Hence, it was thought that the drug must have been located near to the amino acid residue. Molecular docking studies have revealed the structural information of drug-protein complex which supported the above conjecture, confirming the nearest tryptophan as Trp-213 to the complexing rifampicin molecule.
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Affiliation(s)
- Sudhanshu Sharma
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Dineshbabu Takkella
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Pintu Kumar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Krishna Gavvala
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India.
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10
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Li W, Chen S, Hong X, Fang M, Zong W, Li X, Wang J. The molecular interaction of three haloacetic acids with bovine serum albumin and the underlying mechanisms. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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Moradi A, Adibi H, Akbari V, Jalalvand AR. Developing a novel amperometric method for biosensing of carbonic anhydrase II based on conventional and multi-way chemometric analyses of its inhibition by acetazolamide, dorzolamide and methazolamide. SENSING AND BIO-SENSING RESEARCH 2022. [DOI: 10.1016/j.sbsr.2022.100516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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12
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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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13
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Wani TA, Bakheit AH, Zargar S, Alamery S. Mechanistic competitive binding interaction study between olmutinib and colchicine with model transport protein using spectroscopic and computer simulation approaches. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113794] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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14
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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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15
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Szymaszek P, Fiedor P, Chachaj-Brekiesz A, Tyszka-Czochara M, Świergosz T, Ortyl J. Molecular interactions of bovine serum albumin (BSA) with pyridine derivatives as candidates for non-covalent protein probes: a spectroscopic investigation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118262] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Rostamnezhad F, Hossein Fatemi M. Exploring the interactions of acenaphthene with bovine serum albumin: Spectroscopic methods, molecular modeling and chemometric approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 263:120164. [PMID: 34274633 DOI: 10.1016/j.saa.2021.120164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 06/06/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
The interaction of acenaphthene (ACN), a widespread environmental pollutant, with bovine serum albumin (BSA) was explored using spectroscopic methods, molecular modeling and chemometric approaches. The multivariate curve resolution-alternating least squares (MCR-ALS) analysis decomposed the overlapped excitation-emission matrix (EEM) spectra of mixture of ACN and BSA successfully and extracted spectral profiles of pure BSA, ACN and BSA-ACN complex. Based on fluorescence quenching analysis, ACN quenched the inherent fluorescence of BSA remarkably via a static mechanism. The obtained value of binding constant (Kb = 3.82 × 105 L mol-1) revealed a high binding affinity of ACN to BSA which facilitates its distribution by blood circulation system. Furthermore, the binding parameters values revealed that one binding site in BSA was involved in BSA-ACN complex. FT-IR, UV-Vis and CD spectra showed that the conformation of BSA was altered in presence of ACN slightly. Molecular docking simulation suggested that ACN was located in the IA region of BSA and the main interactions between ACN and BSA, are van der Waals forces. The obtained results provide some insight into interactions between ACN and serum albumins at the molecular level.
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Affiliation(s)
- Fatemeh Rostamnezhad
- Laboratory of Chemometrics, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
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17
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Wani TA, Alsaif NA, Alanazi MM, Bakheit AH, Khan AA, Zargar S. Binding of colchicine and ascorbic acid (vitamin C) to bovine serum albumin: An in-vitro interaction study using multispectroscopic, molecular docking and molecular dynamics simulation study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117542] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Chemometrics in investigation of small molecule-biomacromolecule interactions: A review. Int J Biol Macromol 2021; 181:478-493. [PMID: 33798569 DOI: 10.1016/j.ijbiomac.2021.03.184] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 03/27/2021] [Indexed: 01/24/2023]
Abstract
Chemometrics is chemical discipline in which mathematical and statistical methods are coupled with chemical data to extract useful information which cannot be extracted by the use of conventional methods. When experimental techniques are assisted by chemometric methods, very interesting studies will be performed which enable us to obtain valuable information about the system under our study. Chemico-biological interactions are very useful studies which are performed to obtain information about binding of small molecules with biological macromolecules. Recently, these studies have been assisted by chemometric methods to perform advanced studies which can help us to have a deep insight to them. Literature survey showed us that multivariate analysis of the chemico-biological interactions is becoming popular and nowadays, chemometricians are using multivariate chemometric methods for resolving chemico-biological interactions. This article focuses on the works published in the literature to provide a background for those who are interested to work in this field and finally, the results will be discussed and concluded.
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Evaluation of the binding behavior of olmutinib (HM61713) with model transport protein: Insights from spectroscopic and molecular docking studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129024] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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20
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da Silveira Santos F, da Silveira CH, Souza Nunes F, Ferreira DC, Victória HFV, Krambrock K, Chaves OA, Rodembusch FS, Iglesias BA. Photophysical, photodynamical, redox properties and BSA interactions of novel isomeric tetracationic peripheral palladium(II)-bipyridyl porphyrins. Dalton Trans 2020; 49:16278-16295. [PMID: 32400785 DOI: 10.1039/d0dt01063d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
New isomeric tetra-cationic porphyrins containing peripheral [Pd(bpy)Cl]+ units attached to pyridyl substituents were synthesized and fully characterized. The porphyrins present an intense Soret band located in the blue spectral region and an additional four weaker red-shifted Q bands in the visible spectral region (about 500-700 nm). The obtained Strickler-Berg parameters indicate fully spin and symmetry allowed transitions for all the observed absorption bands. Both porphyrins present two fluorescence emission bands, an intense one located around 650 nm and an additional weak red-shifted emission at ∼710 nm. Fluorescence decay time profiles were obtained showing bi-exponential decay. The interaction of the porphyrins with bovine serum albumin (BSA) was studied in detail by a fluorescence quenching method and molecular docking analysis. In addition, the photodynamical activity of the porphyrins in the photooxidation of BSA was determined and compared with the light-induced formation of reactive oxygen species (ROS) by electron paramagnetic resonance (EPR) allied with the spin trapping method. The results show that the Pd(ii)-bypyridyl tetra-cationic porphyrins are promising candidates for the photooxidation of biological substrates used in photodynamic therapy (PDT).
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Affiliation(s)
- Fabiano da Silveira Santos
- Grupo de pesquisa em Fotoquímica Orgânica Aplicada, Instituto de Química, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 9500, 91501-970, Porto Alegre, RS, Brazil
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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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22
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De Rosa C, Melchior A, Sanadar M, Tolazzi M, Giorgetti A, Ribeiro RP, Nardon C, Piccinelli F. Effect of the Heteroaromatic Antenna on the Binding of Chiral Eu(III) Complexes to Bovine Serum Albumin. Inorg Chem 2020; 59:12564-12577. [PMID: 32806003 PMCID: PMC8009522 DOI: 10.1021/acs.inorgchem.0c01663] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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The cationic enantiopure
(R,R) and luminescent Eu(III) complex [Eu(bisoQcd)(H2O)2] OTf (with bisoQcd = N,N′-bis(2-isoquinolinmethyl)-trans-1,2-diaminocyclohexane N,N′-diacetate and OTf = triflate) was synthesized
and characterized. At physiological pH, the 1:1 [Eu(bisoQcd)(H2O)2]+ species, possessing
two water molecules in the inner coordination sphere, is largely dominant.
The interaction with bovine serum albumin (BSA) was studied by means
of several experimental techniques, such as luminescence spectroscopy,
isothermal titration calorimetry (ITC), molecular docking (MD), and
molecular dynamics simulations (MDS). In this direction, a ligand
competition study was also performed by using three clinically established
drugs (i.e., ibuprofen, warfarin, and digitoxin). The nature of this
interaction is strongly affected by the type of the involved heteroaromatic
antenna in the Eu(III) complexes. In fact, the presence of isoquinoline rings drives the corresponding complex toward
the protein superficial area containing the tryptophan residue 134
(Trp134). As the main consequence, the metal center undergoes the
loss of one water molecule upon interaction with the side chain of
a glutamic acid residue. On the other hand, the similar complex containing
pyridine rings ([Eu(bpcd)(H2O)2]Cl with bpcd
= N,N′-bis(2-pyridylmethyl)-trans-1,2-diaminocyclohexane N,N′-diacetate) interacts more weakly with the protein
in a different superficial cavity, without losing the coordinated
water molecules. The effect
of the antenna moiety on the interaction of two new luminescent Eu(III)
complexes with BSA was studied. Results show that the complexes can
be conveniently exploited as optical probes for albumin serum proteins
by means of opposite mechanisms (switch-on−off of the luminescent
signal).
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Affiliation(s)
- Chiara De Rosa
- Luminescent Materials Laboratory, Department of Biotechnology, University of Verona and INSTM - UdR Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Andrea Melchior
- Laboratory of Chemical Technologies, Polytechnic Department of Engineering and Architecture, University of Udine, via Cotonificio 108, 33100 Udine, Italy
| | - Martina Sanadar
- Laboratory of Chemical Technologies, Polytechnic Department of Engineering and Architecture, University of Udine, via Cotonificio 108, 33100 Udine, Italy
| | - Marilena Tolazzi
- Laboratory of Chemical Technologies, Polytechnic Department of Engineering and Architecture, University of Udine, via Cotonificio 108, 33100 Udine, Italy
| | - Alejandro Giorgetti
- Applied Bioinformatics Laboratory, Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Rui P Ribeiro
- Applied Bioinformatics Laboratory, Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Chiara Nardon
- Luminescent Materials Laboratory, Department of Biotechnology, University of Verona and INSTM - UdR Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Fabio Piccinelli
- Luminescent Materials Laboratory, Department of Biotechnology, University of Verona and INSTM - UdR Verona, Strada Le Grazie 15, 37134 Verona, Italy
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23
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Shinde M, Kale K, Kumar K, Ottoor D. Effect of quercetin on the amiloride-bovine serum albumin interaction using spectroscopic methods, molecular docking and chemometric approaches. LUMINESCENCE 2020; 36:129-141. [PMID: 32725694 DOI: 10.1002/bio.3926] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 06/11/2020] [Accepted: 07/26/2020] [Indexed: 11/11/2022]
Abstract
The effect of quercetin flavonoid (QUE), on the binding interaction of antihypertensive drug, amiloride (AMI) with bovine serum albumin (BSA) was investigated in this study. Spectroscopic methods such as steady-state, synchronous, three-dimensional fluorescence, and circular dichroism spectroscopy were employed to study the interaction. Fluorescence data were analyzed using the Stern-Volmer equation and a static quenching process was found to be involved in the formation of AMI-BSA and QUE-BSA complexes and were in good agreement with the thermodynamic study. The thermodynamic parameters illustrated that the process is spontaneous and enthalpy driven. Hydrophobicity is acting as the primary force in the binding interaction. Fluorescence spectral data were resolved using a multivariate curve resolution-alternating least squares method (MCR-ALS). Site marker and molecular docking studies confirmed the binding site of AMI on BSA, i.e. site II. The binding distance between amino acid of BSA and AMI was calculated and found to be 2.18 nm which indicated that energy transfer has occurred from an amino acid of BSA to AMI. The binding affinity of AMI to BSA was found to be reduced in the presence of QUE, which may lead to the poor distribution of AMI at the desired site.
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Affiliation(s)
- Mandakini Shinde
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind Road, Pune, India
| | - Kishor Kale
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind Road, Pune, India.,Department of Chemistry, Nowrosjee Wadia College, Pune, India
| | - Keshav Kumar
- Hochschule Geisenheim University, Geisenheim, Germany
| | - Divya Ottoor
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind Road, Pune, India
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24
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Debia NP, Rodríguez JJ, da Silveira CH, Chaves OA, Iglesias BA, Rodembusch FS, Lüdtke DS. Synthesis and photophysics of benzazole based triazoles with amino acid-derived pendant units. Multiparametric optical sensors for BSA and CT-DNA in solution. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113092] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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Tunes LG, Morato RE, Garcia A, Schmitz V, Steindel M, Corrêa-Junior JD, Dos Santos HF, Frézard F, de Almeida MV, Silva H, Moretti NS, de Barros ALB, do Monte-Neto RL. Preclinical Gold Complexes as Oral Drug Candidates to Treat Leishmaniasis Are Potent Trypanothione Reductase Inhibitors. ACS Infect Dis 2020; 6:1121-1139. [PMID: 32283915 DOI: 10.1021/acsinfecdis.9b00505] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The drugs currently used to treat leishmaniases have limitations concerning cost, efficacy, and safety, making the search for new therapeutic approaches urgent. We found that the gold(I)-derived complexes were active against L. infantum and L. braziliensis intracellular amastigotes with IC50 values ranging from 0.5 to 5.5 μM. All gold(I) complexes were potent inhibitors of trypanothione reductase (TR), with enzyme IC50 values ranging from 1 to 7.8 μM. Triethylphosphine-derived complexes enhanced reactive oxygen species (ROS) production and decreased mitochondrial respiration after 2 h of exposure, indicating that gold(I) complexes cause oxidative stress by direct ROS production, by causing mitochondrial damage or by impairing TR activity and thus accumulating ROS. There was no cross-resistance to antimony; in fact, SbR (antimony-resistant mutants) strains were hypersensitive to some of the complexes. BALB/c mice infected with luciferase-expressing L. braziliensis or L. amazonensis and treated orally with 12.5 mg/kg/day of AdT Et (3) or AdO Et (4) presented reduced lesion size and parasite burden, as revealed by bioimaging. The combination of (3) and miltefosine allowed for a 50% reduction in miltefosine treatment time. Complexes 3 and 4 presented favorable pharmacokinetic and toxicity profiles that encourage further drug development studies. Gold(I) complexes are promising antileishmanial agents, with a potential for therapeutic use, including in leishmaniasis caused by antimony-resistant parasites.
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Affiliation(s)
- Luiza G. Tunes
- Instituto René Rachou/Fiocruz Minas−Fundação Oswaldo Cruz, Belo Horizonte 30190-009, Brasil
| | - Roberta E. Morato
- Instituto René Rachou/Fiocruz Minas−Fundação Oswaldo Cruz, Belo Horizonte 30190-009, Brasil
| | - Adriana Garcia
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Juiz de Fora 36036-900, Brasil
| | - Vinicius Schmitz
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Juiz de Fora 36036-900, Brasil
| | - Mario Steindel
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brasil
| | - José D. Corrêa-Junior
- Departamento de Morfologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brasil
| | - Hélio F. Dos Santos
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Juiz de Fora 36036-900, Brasil
| | - Frédéric Frézard
- Departamento de Fisiologia e Biofísica, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brasil
| | - Mauro V. de Almeida
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Juiz de Fora 36036-900, Brasil
| | - Heveline Silva
- Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brasil
| | - Nilmar S. Moretti
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de São Paulo, São Paulo 04023-062, Brasil
| | - André L. B. de Barros
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brasil
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26
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Chowdhury T, Bera K, Samanta D, Dolui S, Maity S, Maiti NC, Ghosh PK, Das D. Unveiling the binding interaction of zinc (II) complexes of homologous Schiff‐base ligands on the surface of BSA protein: A combined experimental and theoretical approach. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5556] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tania Chowdhury
- Department of ChemistryUniversity of Calcutta 92, A. P. C. Road Kolkata 700009 India
| | - Kaushik Bera
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Debabrata Samanta
- Department of ChemistryIndian Institute of Kanpur Uttar Pradesh 208016 India
| | - Sandip Dolui
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Suvendu Maity
- Department of ChemistryR. K. Mission Residential College Narendrapur, Kolkata 700103 W.B. India
| | - Nakul C. Maiti
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Prasanta Kumar Ghosh
- Department of ChemistryR. K. Mission Residential College Narendrapur, Kolkata 700103 W.B. India
| | - Debasis Das
- Department of ChemistryUniversity of Calcutta 92, A. P. C. Road Kolkata 700009 India
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27
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Tŏpala T, Pascual–Álvarez A, Moldes–Tolosa MÁ, Bodoki A, Castiñeiras A, Torres J, del Pozo C, Borrás J, Alzuet–Piña G. New sulfonamide complexes with essential metal ions [Cu (II), Co (II), Ni (II) and Zn (II)]. Effect of the geometry and the metal ion on DNA binding and nuclease activity. BSA protein interaction. J Inorg Biochem 2020; 202:110823. [DOI: 10.1016/j.jinorgbio.2019.110823] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/02/2019] [Accepted: 09/02/2019] [Indexed: 01/20/2023]
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28
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Hossein Razavizadegan Jahromi S, Farhoosh R, Hemmateenejad B, Varidi M. Characterization of the binding of cyanidin-3-glucoside to bovine serum albumin and its stability in a beverage model system: A multispectroscopic and chemometrics study. Food Chem 2019; 311:126015. [PMID: 31864188 DOI: 10.1016/j.foodchem.2019.126015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 11/30/2019] [Accepted: 12/03/2019] [Indexed: 12/16/2022]
Abstract
Anthocyanins as one of the main natural groups of food colorants undergo quick color fading, which can be diminished through protein association. The stabilization of cyanidin-3-glucoside (CYG) through binding to bovine serum albumin (BSA) was investigated at pH 3.0 using atomic force microscopy and differential scanning calorimetry along with UV-Vis absorption, steady-state fluorescence, circular dichroism, and three-dimensional emission spectral analyses merged with the multivariate curve resolution-alternative least square method. The stabilized CYG molecules were found at the site II of BSA with combined static and dynamic quenching mechanisms. Approximately 93% of the BSA binding sites were occupied in the BSA-CYG complex through hydrogen bonds and van der Waals forces with the binding constant and stoichiometry ratio of 1.88 × 105 M-1 and 1:13, respectively. The results also revealed that CYG molecules caused partial unfolding of the BSA structure, while it was not enough for significant alteration of denaturation temperature. The binding results also indicated that the reduction of H2O2-induced-CYG oxidation rate (34.78%) at pH 3.0 was mainly driven via the BSA-hemiketal association, although the colored species of CYG had a greater affinity towards BSA in the equilibrated system at pHs 1.0 and 5.0.
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Affiliation(s)
| | - Reza Farhoosh
- Ferdowsi University of Mashhad, Faculty of Agriculture, Department of Food Science and Technology, Mashhad 91775-1163, Iran.
| | - Bahram Hemmateenejad
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 7194684795, Iran.
| | - Mehdi Varidi
- Ferdowsi University of Mashhad, Faculty of Agriculture, Department of Food Science and Technology, Mashhad 91775-1163, Iran
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29
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de Andrade Querino AL, da Silva JT, Silva JT, Alvarenga GM, da Silveira CH, de Magalhães MTQ, Chaves OA, Iglesias BA, Diniz R, Silva H. Mono and dinuclear platinum and palladium complexes containing adamantane–azole ligands: DNA and BSA interaction and cytotoxicity. J Biol Inorg Chem 2019; 24:1087-1103. [DOI: 10.1007/s00775-019-01719-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 09/13/2019] [Indexed: 01/01/2023]
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30
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Bessega T, Chaves OA, Martins FM, Acunha TV, Back DF, Iglesias BA, de Oliveira GM. Coordination of Zn(II), Pd(II) and Pt(II) with ligands derived from diformylpyridine and thiosemicarbazide: Synthesis, structural characterization, DNA/BSA binding properties and molecular docking analysis. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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31
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Lang Y, Li E, Meng X, Tian J, Ran X, Zhang Y, Zang Z, Wang W, Li B. Protective effects of bovine serum albumin on blueberry anthocyanins under illumination conditions and their mechanism analysis. Food Res Int 2019; 122:487-495. [DOI: 10.1016/j.foodres.2019.05.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/05/2019] [Accepted: 05/12/2019] [Indexed: 01/08/2023]
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32
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Jena BB, Satish L, Mahanta CS, Swain BR, Sahoo H, Dash BP, Satapathy R. Interaction of carborane-appended trimer with bovine serum albumin: A spectroscopic investigation. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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33
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Lee S, Cho H, Cheong B. Interaction of Bovine Serum Albumin with Propyl Gallate and Methyl Gallate Investigated by Fluorescence Spectroscopy. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11688] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Seong‐June Lee
- Department of ChemistryIncheon National University Incheon 22012 South Korea
| | - Han‐Gook Cho
- Department of ChemistryIncheon National University Incheon 22012 South Korea
| | - Byeong‐Seo Cheong
- Department of ChemistryIncheon National University Incheon 22012 South Korea
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Singh R, Tiwari MK, Gangopadhyay D, Mishra PC, Mishra H, Srivastava A, Singh RK. Detection and monitoring of in vitro formation of salicylic acid from aspirin using fluorescence spectroscopic technique and DFT calculations. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 189:292-297. [PMID: 30445361 DOI: 10.1016/j.jphotobiol.2018.11.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/23/2018] [Accepted: 11/06/2018] [Indexed: 10/27/2022]
Abstract
Acetylsalicylic acid commonly termed as aspirin (AS) is a well known antipyretic and anti-inflammatory drug which can also be used to reduce death risks due to heart attack. In addition to this, it also exhibits some adverse effect such as gastrointestinal, tinnitus, Reye's syndrome. The side effects of AS such as gastrointestinal ulcer, tinnitus and Reye's syndrome are caused due to conversion of AS into its active metabolite salicylic acid (SAL). Conversion of AS into SAL has been investigated generally at basic pH. Since the pH of Gastrointestinal tract is on average neutral ranging from 6.5-7.4. Therefore in the present research work, in vitro conversion of AS to SAL was detected at neutral pH in both aqueous medium and human blood serum samples by time series fluorescence measurements and DFT study. The SAL obtained from AS at neutral pH was observed to be stable for ~ 6 and ~ 4 days in aqueous medium and blood serum, respectively. The mechanism of conversion of AS into SAL was investigated using the transition state theory employing density functional theory (DFT). On the basis of DFT calculation the in vitro formation of SAL from AS at neutral pH was found to involve two intermediate transition states.
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Affiliation(s)
- Ranjana Singh
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India; Department of Physics, Central University of South Bihar, Panchanpur, Gaya, India.
| | - Manish Kumar Tiwari
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | | | - Phool Chand Mishra
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Hirdyesh Mishra
- Department of Physics, MMV, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Anchal Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ranjan K Singh
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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35
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Ability of gelatin and BSA to stabilize the supersaturated state of poorly soluble drugs. Eur J Pharm Biopharm 2018; 131:211-223. [DOI: 10.1016/j.ejpb.2018.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/23/2018] [Accepted: 08/08/2018] [Indexed: 12/11/2022]
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36
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Zhang J, Chen L, Liu D, Zhu Y, Zhang Y. Interactions of pyrene and/or 1-hydroxypyrene with bovine serum albumin based on EEM-PARAFAC combined with molecular docking. Talanta 2018; 186:497-505. [DOI: 10.1016/j.talanta.2018.04.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 04/17/2018] [Accepted: 04/20/2018] [Indexed: 01/01/2023]
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37
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Santos JCN, da Silva IM, Braga TC, de Fátima Â, Figueiredo IM, Santos JCC. Thimerosal changes protein conformation and increase the rate of fibrillation in physiological conditions: Spectroscopic studies using bovine serum albumin (BSA). Int J Biol Macromol 2018; 113:1032-1040. [DOI: 10.1016/j.ijbiomac.2018.02.116] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/11/2018] [Accepted: 02/18/2018] [Indexed: 11/28/2022]
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38
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Camargo CR, Caruso ÍP, Gutierrez SJC, Fossey MA, Filho JMB, Cornélio ML. Spectral and computational features of the binding between riparins and human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 190:81-88. [PMID: 28915468 DOI: 10.1016/j.saa.2017.08.068] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 08/15/2017] [Accepted: 08/31/2017] [Indexed: 06/07/2023]
Abstract
The green Brazilian bay leaf, a spice much prized in local cuisine (Aniba riparia, Lauraceae), contains chemical compounds presenting benzoyl-derivatives named riparins, which have anti-inflammatory, antimicrobial and anxiolytic properties. However, it is unclear what kind of interaction riparins perform with any molecular target. As a profitable target, human serum albumin (HSA) is one of the principal extracellular proteins, with an exceptional capacity to interact with several molecules, and it also plays a crucial role in the transport, distribution, and metabolism of a wide variety of endogenous and exogenous ligands. To outline the HSA-riparin interaction mechanism, spectroscopy and computational methods were synergistically applied. An evaluation through fluorescence spectroscopy showed that the emission, attributed to Trp 214, at 346 nm decreased with titrations of riparins. A static quenching mechanism was observed in the binding of riparins to HSA. Fluorescence experiments performed at 298, 308 and 318 K made it possible to conduct thermodynamic analysis indicating a spontaneous reaction in the complex formation (ΔG<0). The enthalpy-entropy balance experiment with a molecular modeling calculation revealed that hydrophobic, hydrogen bond and non-specific interactions are present for riparin I-III with HSA. The set of results from fractional fluorescence changes obtained through Schatchard was inconclusive in establishing what kind of cooperativity is present in the interaction. To shed light upon the HSA-riparins complex, Hill's approach was utilized to distinguish the index of affinity and the binding constant. A correspondence between the molecular structures of riparins, due to the presence of the hydroxyl group in the B-ring, with thermodynamic parameters and index of affinity were observed. Riparin III performs an intramolecular hydrogen bond, which affects the Hill coefficient and the binding constant. Therefore, the presence of hydroxyl groups is capable of modulating the interaction between riparins and HSA. Site marker competitive experiments indicated Site I as being the most suitable, and the molecular modeling tools reinforced the experimental results detailing the participation of residues.
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Affiliation(s)
- Cintia Ramos Camargo
- Departamento de Física, Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristóvão Colombo 2255, CEP 15054-000, São José do Rio Preto, SP, Brazil
| | - Ícaro Putinhon Caruso
- Centro Multiusuário de Inovação Biomolecular (CMIB), Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristóvão Colombo 2255, CEP 15054-000, São José do Rio Preto, SP, Brazil
| | | | - Marcelo Andres Fossey
- Departamento de Física, Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristóvão Colombo 2255, CEP 15054-000, São José do Rio Preto, SP, Brazil; Centro Multiusuário de Inovação Biomolecular (CMIB), Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristóvão Colombo 2255, CEP 15054-000, São José do Rio Preto, SP, Brazil
| | - José Maria Barbosa Filho
- Laboratório de Tecnologia Farmacêutica (LTF), Universidade Federal da Paraíba (UFPB), Cidade Universitária, CEP 58051-900 João Pessoa, PB, Brazil
| | - Marinônio Lopes Cornélio
- Departamento de Física, Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristóvão Colombo 2255, CEP 15054-000, São José do Rio Preto, SP, Brazil; Centro Multiusuário de Inovação Biomolecular (CMIB), Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristóvão Colombo 2255, CEP 15054-000, São José do Rio Preto, SP, Brazil.
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Hashemipour S, Yaftian MR, Kalhor H, Ghanbari M. Investigation of bovine serum albumin/tropicamide interaction using a quartz crystal microbalance sensor. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1317-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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40
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Unraveling the binding characteristics of the anti-HIV agents abacavir, efavirenz and emtricitabine to bovine serum albumin using spectroscopic and molecular simulation approaches. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.12.066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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41
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Akdogan Y, Emrullahoglu M, Tatlidil D, Ucuncu M, Cakan-Akdogan G. EPR studies of intermolecular interactions and competitive binding of drugs in a drug-BSA binding model. Phys Chem Chem Phys 2018; 18:22531-9. [PMID: 27468942 DOI: 10.1039/c6cp04137j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Understanding intermolecular interactions between drugs and proteins is very important in drug delivery studies. Here, we studied different binding interactions between salicylic acid and bovine serum albumin (BSA) using electron paramagnetic resonance (EPR) spectroscopy. Salicylic acid was labeled with a stable radical (spin label) in order to monitor its mobilized (free) or immobilized (bound to BSA) states. In addition to spin labeled salicylic acid (SL-salicylic acid), its derivatives including SL-benzoic acid, SL-phenol, SL-benzene, SL-cyclohexane and SL-hexane were synthesized to reveal the effects of various drug binding interactions. EPR results of these SL-molecules showed that hydrophobic interaction is the main driving force. Whereas each of the two functional groups (-COOH and -OH) on the benzene ring has a minute but detectable effect on the drug-protein complex formation. In order to investigate the effect of electrostatic interaction on drug binding, cationic BSA (cBSA) was synthesized, altering the negative net charge of BSA to positive. The salicylic acid loading capacity of cBSA is significantly higher compared to that of BSA, indicating the importance of electrostatic interaction in drug binding. Moreover, the competitive binding properties of salicylic acid, ibuprofen and aspirin to BSA were studied. The combined EPR results of SL-salicylic acid/ibuprofen and SL-ibuprofen/salicylic acid showed that ibuprofen is able to replace up to ∼83% of bound SL-salicylic acid, and salicylic acid can replace only ∼14% of the bound SL-ibuprofen. This indicates that ∼97% of all salicylic acid and ibuprofen binding sites are shared. On the other hand, aspirin replaces only ∼23% of bound SL-salicylic acid, and salicylic acid replaces ∼50% of bound SL-aspirin, indicating that ∼73% of all salicylic acid and aspirin binding sites are shared. These results show that EPR spectroscopy in combination with the spin labeling technique is a very powerful method to investigate drug binding dynamics in detail.
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Affiliation(s)
- Y Akdogan
- Materials Science and Engineering Department, I[combining dot above]zmir Institute of Technology, 35430 Urla, I[combining dot above]zmir, Turkey.
| | - M Emrullahoglu
- Department of Chemistry, I[combining dot above]zmir Institute of Technology, 35430 Urla, I[combining dot above]zmir, Turkey
| | - D Tatlidil
- Materials Science and Engineering Department, I[combining dot above]zmir Institute of Technology, 35430 Urla, I[combining dot above]zmir, Turkey.
| | - M Ucuncu
- Department of Chemistry, I[combining dot above]zmir Institute of Technology, 35430 Urla, I[combining dot above]zmir, Turkey
| | - G Cakan-Akdogan
- Dokuz Eylul University, I[combining dot above]zmir Biomedicine and Genome Center, I[combining dot above]zmir, Turkey
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Muthukkumar M, Kamal C, Venkatesh G, Kaya C, Kaya S, Enoch IV, Vennila P, Rajavel R. Structural, spectral, DFT and biological studies on macrocyclic mononuclear ruthenium (II) complexes. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.132] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Goszczyński TM, Fink K, Kowalski K, Leśnikowski ZJ, Boratyński J. Interactions of Boron Clusters and their Derivatives with Serum Albumin. Sci Rep 2017; 7:9800. [PMID: 28852112 PMCID: PMC5574927 DOI: 10.1038/s41598-017-10314-0] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 07/31/2017] [Indexed: 12/21/2022] Open
Abstract
Boron clusters are polyhedral boron hydrides with unique properties, and they are becoming increasingly widely used in biology and medicine, including for boron neutron capture therapy (BNCT) of cancers and in the design of novel bioactive molecules and potential drugs. Among boron cluster types, icosahedral boranes, carboranes, and metallacarboranes are particularly interesting, and there is a need for basic studies on their interaction with biologically important molecules, such as proteins. Herein, we report studies on the interaction of selected boron clusters and their derivatives with serum albumin, the most abundant protein in mammalian blood. The interaction of boron clusters with albumin was examined by fluorescence quenching, circular dichroism, dynamic and static light scattering measurements and MALDI-TOF mass spectrometry. Our results showed that metallacarboranes have the strongest interaction with albumin among the tested clusters. The observed strength of boron cluster interactions with albumin decreases in order: metallacarboranes [M(C2B9H11)2]− > carboranes (C2B10H12) >> dodecaborate anion [B12H12]2−. Metallacarboranes first specifically interact with the binding cavity of albumin and then, with increasing compound concentrations, interact non-specifically with the protein surface. These findings can be of importance and are useful in the development of new bioactive compounds that contain boron clusters.
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Affiliation(s)
- Tomasz M Goszczyński
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl St., 53-114, Wrocław, Poland.
| | - Krzysztof Fink
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl St., 53-114, Wrocław, Poland
| | - Konrad Kowalski
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl St., 53-114, Wrocław, Poland
| | - Zbigniew J Leśnikowski
- Laboratory of Molecular Virology and Biological Chemistry, Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa St., 93-232, Łódź, Poland.
| | - Janusz Boratyński
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl St., 53-114, Wrocław, Poland
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T PL, Mondal M, Ramadas K, Natarajan S. Molecular interaction of 2,4-diacetylphloroglucinol (DAPG) with human serum albumin (HSA): The spectroscopic, calorimetric and computational investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:90-102. [PMID: 28441541 DOI: 10.1016/j.saa.2017.04.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 03/29/2017] [Accepted: 04/14/2017] [Indexed: 06/07/2023]
Abstract
Drug molecule interaction with human serum albumin (HSA) affects the distribution and elimination of the drug. The compound, 2,4-diacetylphloroglucinol (DAPG) has been known for its antimicrobial, antiviral, antihelminthic and anticancer properties. However, its interaction with HSA is not yet reported. In this study, the interaction between HSA and DAPG was investigated through steady-state fluorescence, time-resolved fluorescence (TRF), circular dichroism (CD), Fourier transform infrared (FT-IR) spectroscopy, isothermal titration calorimetry (ITC), molecular docking and molecular dynamics simulation (MDS). Fluorescence spectroscopy results showed the strong quenching of intrinsic fluorescence of HSA due to interaction with DAPG, through dynamic quenching mechanism. The compound bound to HSA with reversible and moderate affinity which explained its easy diffusion from circulatory system to target tissue. The thermodynamic parameters from fluorescence spectroscopic data clearly revealed the contribution of hydrophobic forces but, the role of hydrogen bonds was not negligible according to the ITC studies. The interaction was exothermic and spontaneous in nature. Binding with DAPG reduced the helical content of protein suggesting the unfolding of HSA. Site marker fluorescence experiments revealed the change in binding constant of DAPG in the presence of site I (warfarin) but not site II marker (ibuprofen) which confirmed that the DAPG bound to site I. ITC experiments also supported this as site I marker could not bind to HSA-DAPG complex while site II marker was accommodated in the complex. In silico studies further showed the lowest binding affinity and more stability of DAPG in site I than in site II. Thus the data presented in this study confirms the binding of DAPG to the site I of HSA which may help in further understanding of pharmacokinetic properties of DAPG.
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Affiliation(s)
- Pragna Lakshmi T
- Centre for Bioinformatics, Pondicherry University, Pondicherry, India
| | - Moumita Mondal
- Department of Biotechnology, Pondicherry University, Pondicherry, India
| | - Krishna Ramadas
- Centre for Bioinformatics, Pondicherry University, Pondicherry, India.
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Veeralakshmi S, Sabapathi G, Nehru S, Venuvanalingam P, Arunachalam S. Surfactant–cobalt(III) complexes: The impact of hydrophobicity on interaction with HSA and DNA – insights from experimental and theoretical approach. Colloids Surf B Biointerfaces 2017; 153:85-94. [DOI: 10.1016/j.colsurfb.2017.02.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 02/06/2017] [Accepted: 02/11/2017] [Indexed: 12/19/2022]
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Moradi Z, Khorasani-Motlagh M, Rezvani AR, Noroozifar M. Evaluation of DNA, BSA binding, and antimicrobial activity of new synthesized neodymium complex containing 29-dimethyl 110-phenanthroline. J Biomol Struct Dyn 2017; 36:779-794. [DOI: 10.1080/07391102.2017.1288170] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Zohreh Moradi
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, P.O. Box 98155-147, Iran
| | | | - Ali Reza Rezvani
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, P.O. Box 98155-147, Iran
| | - Meissam Noroozifar
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, P.O. Box 98155-147, Iran
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Esteghamat-Panah R, Hadadzadeh H, Farrokhpour H, Simpson J, Abdolmaleki A, Abyar F. Synthesis, structure, DNA/protein binding, and cytotoxic activity of a rhodium(III) complex with 2,6-bis(2-benzimidazolyl)pyridine. Eur J Med Chem 2017; 127:958-971. [DOI: 10.1016/j.ejmech.2016.11.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 11/01/2016] [Accepted: 11/03/2016] [Indexed: 10/20/2022]
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A mononuclear Ru(II) complex with meloxicam: DNA- and BSA-binding, molecular modeling and anticancer activity against human carcinoma cell lines. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.04.037] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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49
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Takić MM, Jovanović VB, Pavićević ID, Uzelac TN, Aćimović JM, Ristić-Medić DK, Mandić LM. Binding of enterolactone and enterodiol to human serum albumin: increase of cysteine-34 thiol group reactivity. Food Funct 2016; 7:1217-26. [PMID: 26838610 DOI: 10.1039/c5fo01346a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The interaction of polyphenolic molecules with human serum albumin (HSA) could lead to changes in the reactivity of the HSA Cys34 thiol group (HSA-SH). The influences of enterolactone (EL) and enterodiol (ED) binding on HSA-SH reactivity in fatty acid (FA)-free HSA, and in HSA with bound stearic acid (S) in S/HSA molar ratios of 1:1 and 4:1, were investigated by the determination of the pseudo first order rate constants (k') for the thiol reaction with 5,5'-dithiobis-(2-nitrobenzoic acid). The binding affinities and binding sites of EL and ED were also determined, using fluorescence measurements of the intrinsic fluorescence of Trp214 and diazepam (binding site marker). EL and ED binding to HSA increased the reactivity of HSA-SH in all assayed HSA-enterolignan complexes by 9.1-33.1%. The strongest effects were obtained for FA-free HSA-enterolignan complexes. S modulated/reduced the effect of EL on HSA-SH reactivity, while its influence on the effect of ED was negligible. The binding of enterolignans to HSA was investigated: the binding constants were the highest for FA-free HSA (EL: 11.64 × 10(4) M(-1) and ED: 5.59 × 10(4) M(-1) at 37 °C) and the lowest for S/HSA 4:1-enterolignan complexes (EL: 2.43 × 10(4) M(-1) and ED: 1.92 × 10(4) M(-1)). When the S/HSA ratio was increased, the binding affinities and number of binding sites for EL and ED were decreased. At the same time, a high correlation between binding constants and increased Cys34 reactivity was found (r = 0.974). Competitive experiments using diazepam indicated that the binding of ED and of EL was located in the hydrophobic pocket of site II in HSA. Overall, it is evident that stearic acid could modulate the enterolignan effects on HSA-SH reactivity as well as their binding to HSA. This finding could be important for pharmacokinetics and the expression of enterolignan antioxidant effects in vivo after an intake of lignan rich food.
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Affiliation(s)
- Marija M Takić
- Institute for Medical Research, Center of research excellence in nutrition and metabolism, University of Belgrade, Belgrade, Serbia
| | - Vesna B Jovanović
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Ivan D Pavićević
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Tamara N Uzelac
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Jelena M Aćimović
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
| | - Danijela K Ristić-Medić
- Institute for Medical Research, Center of research excellence in nutrition and metabolism, University of Belgrade, Belgrade, Serbia
| | - Ljuba M Mandić
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11158, Serbia.
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Bag SS, Jana S, Pradhan MK. Synthesis, photophysical properties of triazolyl-donor/acceptor chromophores decorated unnatural amino acids: Incorporation of a pair into Leu-enkephalin peptide and application of triazolylperylene amino acid in sensing BSA. Bioorg Med Chem 2016; 24:3579-95. [DOI: 10.1016/j.bmc.2016.05.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/29/2016] [Accepted: 05/30/2016] [Indexed: 02/03/2023]
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