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Paliwal H, Kaewpaiboon S, Ali Khumaini Mudhar Bintang M, Srichana T. Interaction studies of cannabidiol with human serum albumin by surface plasmon resonance, spectroscopy, and molecular docking. J Biomol Struct Dyn 2024; 42:5147-5158. [PMID: 37434318 DOI: 10.1080/07391102.2023.2234494] [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: 03/24/2023] [Accepted: 06/08/2023] [Indexed: 07/13/2023]
Abstract
The binding interaction of cannabidiol (CBD) and human serum albumin (HSA) under physiological blood pH conditions (pH 7.4) was conducted by surface plasmon resonance (SPR), fluorescence spectroscopy, UV-Visible spectrophotometry, and molecular docking. The responses from SPR measurement increased with the increase in CBD concentration until equilibrium was reached at the equilibrium dissociation constant (KD) of 9.8 × 10-4 M. The results from fluorescence and UV-Visible spectroscopy showed that CBD bound to HSA at one site in a spontaneous manner to form protein-CBD complexes. The quenching process involved both static and dynamic mechanisms while the static mechanism contributed predominantly to the binding between CBD and albumin. The binding constants estimated from the fluorescence studies were from 0.16 × 103 to 8.10 × 103 M-1, which were calculated at different temperature conditions using Stern-Volmer plots. The thermodynamic parameters demonstrated that the binding interaction was a spontaneous reaction as Gibbs free energy had negative values (ΔG = -12.57 to -23.20 kJ.mol-1). Positive ΔH and ΔS values (ΔH = 2.46 × 105 J.mol-1 and ΔS = 869.81 J.mol-1K-1) indicated that the hydrophobic force was the major binding interaction. Finally, confirmation of the type and extent of interaction was provided using UV-spectroscopy and molecular docking studies. The outcomes of this study are expected to serve as a platform to conduct future studies on binding interactions and toxicological research of CBD.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Himanshu Paliwal
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Sunisa Kaewpaiboon
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Muhammad Ali Khumaini Mudhar Bintang
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Teerapol Srichana
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, Thailand
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Akawa OB, Okunlola FO, Alahmdi MI, Abo-Dya NE, Sidhom PA, Ibrahim MAA, Shibl MF, Khan S, Soliman MES. Multi-cavity molecular descriptor interconnections: Enhanced protocol for prediction of serum albumin drug binding. Eur J Pharm Biopharm 2024; 194:9-19. [PMID: 37984594 DOI: 10.1016/j.ejpb.2023.11.003] [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: 09/01/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/22/2023]
Abstract
The role of human serum albumin (HSA) in the transport of molecules predicates its involvement in the determination of drug distribution and metabolism. Optimization of ADME properties are analogous to HSA binding thus this is imperative to the drug discovery process. Currently, various in silico predictive tools exist to complement the drug discovery process, however, the prediction of possible ligand-binding sites on HSA has posed several challenges. Herein, we present a strong and deeper-than-surface case for the prediction of HSA-ligand binding sites using multi-cavity molecular descriptors by exploiting all experimentally available and crystallized HSA-bound drugs. Unlike previously proposed models found in literature, we established an in-depth correlation between the physicochemical properties of available crystallized HSA-bound drugs and different HSA binding site characteristics to precisely predict the binding sites of investigational molecules. Molecular descriptors such as the number of hydrogen bond donors (nHD), number of heteroatoms (nHet), topological polar surface area (TPSA), molecular weight (MW), and distribution coefficient (LogD) were correlated against HSA binding site characteristics, including hydrophobicity, hydrophilicity, enclosure, exposure, contact, site volume, and donor/acceptor ratio. Molecular descriptors nHD, TPSA, LogD, nHet, and MW were found to possess the most inherent capacities providing baseline information for the prediction of serum albumin binding site. We believe that these associations may form the bedrock for establishing a solid correlation between the physicochemical properties and Albumin binding site architecture. Information presented in this report would serve as critical in provisions of rational drug designing as well as drug delivery, bioavailability, and pharmacokinetics.
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Affiliation(s)
- Oluwole B Akawa
- Molecular Bio-computational and Drug Design Laboratory, School of Health Sciences, University of KwaZulu Natal, Westville Campus, Durban 4001, South Africa
| | - Felix O Okunlola
- Molecular Bio-computational and Drug Design Laboratory, School of Health Sciences, University of KwaZulu Natal, Westville Campus, Durban 4001, South Africa
| | - Mohammed Issa Alahmdi
- Faculty of Science, Department of Chemistry, University of Tabuk, Tabuk 7149, Saudi Arabia
| | - Nader E Abo-Dya
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tabuk University, Tabuk 71491, Saudi Arabia; Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Peter A Sidhom
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt
| | - Mahmoud A A Ibrahim
- Molecular Bio-computational and Drug Design Laboratory, School of Health Sciences, University of KwaZulu Natal, Westville Campus, Durban 4001, South Africa; Computational Chemistry Laboratory, Chemistry Department, Faculty of Science, Minia University, Minia 61519
| | - Mohamed F Shibl
- Renewable Energy Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713 Doha, Qatar
| | - Shahzeb Khan
- Centre for Pharmaceutical Engineering Science, Faculty of life Science, School of Pharmacy and Medical Sciences, University of Bradford UK, West Yorkshire, BD7 1DP, UK
| | - Mahmoud E S Soliman
- Molecular Bio-computational and Drug Design Laboratory, School of Health Sciences, University of KwaZulu Natal, Westville Campus, Durban 4001, South Africa.
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Gaur V, Kumar N, Vyas A, Chowdhury D, Singh J, Bera S. Identification of potential inhibitors against Escherichia coli Mur D enzyme to combat rising drug resistance: an in-silico approach. J Biomol Struct Dyn 2023:1-11. [PMID: 38149858 DOI: 10.1080/07391102.2023.2297007] [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: 05/02/2023] [Accepted: 12/13/2023] [Indexed: 12/28/2023]
Abstract
Indiscriminate use of anti-microbial agents has resulted in the inception, frequency, and spread of antibiotic resistance among targeted bacterial pathogens and the commensal flora. Mur enzymes, playing a crucial role in cell-wall synthesis, are one of the most appropriate targets for developing novel inhibitors against antibiotic-resistant bacterial pathogens. In the present study, in-silico high-throughput virtual (HTVS) and Standard-Precision (SP) screening was carried out with 0.3 million compounds from several small-molecule libraries against the E. coli Mur D enzyme (PDB ID 2UUP). The docked complexes were further subjected to extra-precision (XP) docking calculations, and highest Glide-score compound was further subjected to molecular simulation studies. The top six virtual hits (S1-S6) displayed a glide score (G-score) within the range of -9.013 to -7.126 kcal/mol and compound S1 was found to have the highest stable interactions with the Mur D enzyme (2UUP) of E. coli. The stability of compound S1 with the Mur D (2UUP) complex was validated by a 100-ns molecular dynamics simulation. Binding free energy calculation by the MM-GBSA strategy of the S1-2UUP (Mur D) complex established van der Waals, hydrogen bonding, lipophilic, and Coulomb energy terms as significant favorable contributors for ligand binding. The final lead molecules were subjected to ADMET predictions to study their pharmacokinetic properties and displayed promising results, except for certain modifications required to improve QPlogHERG values. So, the compounds screened against the Mur D enzyme can be further studied as preparatory points for in-vivo studies to develop potential drugs. HIGHLIGHTSE.coli is a common cause of urinary tract infections.E.coli MurD enzyme is a suitable target for drug development.Novel inhibitors against E.coli MurD enzyme were identified.Molecular dynamics studies identified in-silico potential of identified compound.ADMET predictions and Lipinski's rule of five studies showed promising results.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Vinita Gaur
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Punjab, India
| | - Neeraj Kumar
- Department of Pharmaceutical Chemistry, Bhupal Nobles' University, Udaipur, Rajasthan, India
| | - Ashish Vyas
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Punjab, India
| | - Debabrata Chowdhury
- School of Medicine - Infectious Diseases, Stanford University, Stanford, CA, USA
| | - Joginder Singh
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Punjab, India
| | - Surojit Bera
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Punjab, India
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Khaouane A, Ferhat S, Hanini S. A Quantitative Structure-Activity Relationship for Human Plasma Protein Binding: Prediction, Validation and Applicability Domain. Adv Pharm Bull 2023; 13:784-791. [PMID: 38022813 PMCID: PMC10676552 DOI: 10.34172/apb.2023.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 01/23/2023] [Accepted: 04/24/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose The purpose of this study was to develop a robust and externally predictive in silico QSAR-neural network model for predicting plasma protein binding of drugs. This model aims to enhance drug discovery processes by reducing the need for chemical synthesis and extensive laboratory testing. Methods A dataset of 277 drugs was used to develop the QSAR-neural network model. The model was constructed using a Filter method to select 55 molecular descriptors. The validation set's external accuracy was assessed through the predictive squared correlation coefficient Q2 and the root mean squared error (RMSE). Results The developed QSAR-neural network model demonstrated robustness and good applicability domain. The external accuracy of the validation set was high, with a predictive squared correlation coefficient Q2 of 0.966 and a root mean squared error (RMSE) of 0.063. Comparatively, this model outperformed previously published models in the literature. Conclusion The study successfully developed an advanced QSAR-neural network model capable of predicting plasma protein binding in human plasma for a diverse set of 277 drugs. This model's accuracy and robustness make it a valuable tool in drug discovery, potentially reducing the need for resource-intensive chemical synthesis and laboratory testing.
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Affiliation(s)
- Affaf Khaouane
- Laboratory of Biomaterial and transport Phenomena (LBMPT), University of Médéa, pole urbain, 26000, Médéa, Algeria
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Williams AH, Zhan CG. Staying Ahead of the Game: How SARS-CoV-2 has Accelerated the Application of Machine Learning in Pandemic Management. BioDrugs 2023; 37:649-674. [PMID: 37464099 DOI: 10.1007/s40259-023-00611-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2023] [Indexed: 07/20/2023]
Abstract
In recent years, machine learning (ML) techniques have garnered considerable interest for their potential use in accelerating the rate of drug discovery. With the emergence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, the utilization of ML has become even more crucial in the search for effective antiviral medications. The pandemic has presented the scientific community with a unique challenge, and the rapid identification of potential treatments has become an urgent priority. Researchers have been able to accelerate the process of identifying drug candidates, repurposing existing drugs, and designing new compounds with desirable properties using machine learning in drug discovery. To train predictive models, ML techniques in drug discovery rely on the analysis of large datasets, including both experimental and clinical data. These models can be used to predict the biological activities, potential side effects, and interactions with specific target proteins of drug candidates. This strategy has proven to be an effective method for identifying potential coronavirus disease 2019 (COVID-19) and other disease treatments. This paper offers a thorough analysis of the various ML techniques implemented to combat COVID-19, including supervised and unsupervised learning, deep learning, and natural language processing. The paper discusses the impact of these techniques on pandemic drug development, including the identification of potential treatments, the understanding of the disease mechanism, and the creation of effective and safe therapeutics. The lessons learned can be applied to future outbreaks and drug discovery initiatives.
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Affiliation(s)
- Alexander H Williams
- Molecular Modeling and Biopharmaceutical Center, University of Kentucky, 789 South Limestone Street, Lexington, KY, 40536, USA
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, KY, 40536, USA
- GSK Upper Providence, 1250 S. Collegeville Road, Collegeville, PA, 19426, USA
| | - Chang-Guo Zhan
- Molecular Modeling and Biopharmaceutical Center, University of Kentucky, 789 South Limestone Street, Lexington, KY, 40536, USA.
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, KY, 40536, USA.
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Iqbal Y, Akhtar T, Haroon M, Mehmood H, Nizami T, Tahir E, Ehsan M. 4-Adamantyl-(2-(arylidene)hydrazinyl)thiazoles as potential antidiabetic agents: experimental and docking studies. Future Med Chem 2023; 15:599-613. [PMID: 37140092 DOI: 10.4155/fmc-2023-0010] [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: 05/05/2023] Open
Abstract
Aim: To develop an efficient and cost-effective antidiabetic agent. Methods: A simple and convenient Hantzsch synthetic strategy was used to prepare 4-adamantyl-(2-(arylidene)hydrazinyl)thiazoles. Results: Fifteen newly established structures of 4-adamantyl-(2-(arylidene)hydrazinyl)thiazoles were tested for their α-amylase, antiglycation and antioxidant activities. Almost all tested compounds showed excellent α-amylase inhibition. Compounds 3a and 3j exhibited the highest potency, with IC50 values of 16.34 ± 2.67 and 16.64 ± 1.12 μM, respectively. Compounds 3c and 3i exhibited comparable antiglycation potential with the standard, aminoguanidine. The antioxidant potential of compound 3g was found to be excellent, with an IC50 value of 28.19 ± 0.2563 μM. The binding interactions of compound 3a (binding energy = -8.833 kcal/mol) with human pancreatic α-amylase identified 3a as a potent α-amylase inhibitor. Conclusion: Enrichment of established structures with more electron-donating functionalities may assist/lead to the development of more potent antidiabetic drugs.
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Affiliation(s)
- Yasir Iqbal
- Department of Chemistry, Mirpur University of Science & Technology (MUST), 10250-Mirpur (AJK), Pakistan
| | - Tashfeen Akhtar
- Department of Chemistry, Mirpur University of Science & Technology (MUST), 10250-Mirpur (AJK), Pakistan
| | - Muhammad Haroon
- Department of Chemistry, Mirpur University of Science & Technology (MUST), 10250-Mirpur (AJK), Pakistan
- Department of Chemistry, Government Major Muhammad Afzal Khan (Shaheed), Boys Degree College Afzalpur (Affiliated with Mirpur University of Science & Technology (MUST), 10250-Mirpur (AJK), Pakistan
- Department of Chemistry and Biochemistry, Miami University, 651 E. High Street, Oxford, Ohio 45056, USA
| | - Hasnain Mehmood
- Department of Chemistry, Mirpur University of Science & Technology (MUST), 10250-Mirpur (AJK), Pakistan
| | - Tauqir Nizami
- Deputy Director ORIC, University of Chakwal, Punjab, Pakistan
| | - Ehsaan Tahir
- Department of Chemistry, Mirpur University of Science & Technology (MUST), 10250-Mirpur (AJK), Pakistan
| | - Muhammad Ehsan
- Bionano-Chemistry Lab, Department of Bionano Engineering, Hanyang University, Ansan, 155-88, Korea
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7
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Suh EH, Kovacs Z. Competitive Displacement Restores the Hyperpolarized 15N NMR Signal in Blood Plasma. ACS PHYSICAL CHEMISTRY AU 2023; 3:167-171. [PMID: 36968448 PMCID: PMC10037449 DOI: 10.1021/acsphyschemau.2c00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Hyperpolarized (HP) NMR can improve the sensitivity of conventional NMR experiments by several orders of magnitude, thereby making it feasible to detect the signal of low sensitivity nuclei such as 13C and 15N nuclei in vivo. Hyperpolarized substrates are usually administered by direct injection into the bloodstream, and interaction with serum albumin can cause rapid decay of the hyperpolarized signal due to the shortening of the spin-lattice (T1) relaxation time. Here we report that the 15N T1 of 15N labeled, partially deuterated tris(2-pyridylmethyl)amine decreases dramatically upon binding to albumin to such an extent that no HP-15 signal could be detected. We also demonstrate that the signal could be restored using a competitive displacer, iophenoxic acid, which binds stronger to albumin than tris(2-pyridylmethyl)amine. The methodology presented here eliminates the undesirable effect of albumin binding and should widen the range of hyperpolarized probes for in vivo studies.
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Affiliation(s)
- Eul H. Suh
- College
of Pharmacy, The University of North Texas
Health Science Center at Fort Worth, 3500 Camp Bowie Blvd., Fort Worth, Texas 76107, United
States
- Advanced
Imaging Research Center, University of Texas
Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, United
States
| | - Zoltan Kovacs
- Advanced
Imaging Research Center, University of Texas
Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, United
States
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8
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Synthesis, Characterization and Biological Investigations of Half-Sandwich Ruthenium(II) Complexes Containing Benzimidazole Moiety. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010040. [PMID: 36615237 PMCID: PMC9821818 DOI: 10.3390/molecules28010040] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/13/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Half-sandwich Ru(II) complexes belong to group of biologically active metallo-compounds with promising antimicrobial and anticancer activity. Herein, we report the synthesis and characterization of arene ruthenium complexes containing benzimidazole moiety, namely, [(η6-p-cymene)RuCl(bimCOO)] (1) and [(η6-p-cymene)RuCl2(bim)] (2) (where bimCOO = benzimidazole-2-carboxylate and bim = 1-H-benzimidazole). The compounds were characterized by 1H NMR, 13C NMR, IR, UV-vis and CV. Molecular structures of the complexes were determined by SC-XRD analysis, and the results indicated the presence of a pseudo-tetrahedral (piano stool) geometry. Interactions in the crystals of the Ru complexes using the Hirshfeld surface analysis were also examined. In addition, the biological studies of the complexes, such as antimicrobial assays (against planktonic and adherent microbes), cytotoxicity and lipophilicity, were performed. Antibacterial activity of the complexes was evaluated against S. aureus, E. coli, P. aeruginosa PAO1 and LES B58. Cytotoxic activity was tested against primary human fibroblasts and adenocarcinoma human alveolar basal epithelial cells. Obtained biological results show that the ruthenium compounds have bacteriostatic activity toward Pseudomonas aeruginosa PAO1 strain and are not toxic to normal cells. A molecular docking study was applied as a predictive source of information about the plausibility of examined structures binding with HSA as a transporting system.
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Wu YJ, Li ZH, Li JY, Zhou Y, Wang RY, Chen XY, Qing LS, Luo P. Elucidation of the binding mechanism of astragaloside IV derivative with human serum albumin and its cardiotoxicity in zebrafish embryos. Front Pharmacol 2022; 13:987882. [PMID: 36210826 PMCID: PMC9537572 DOI: 10.3389/fphar.2022.987882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/01/2022] [Indexed: 11/13/2022] Open
Abstract
LS-102 is a new derivative of astragaloside IV (AGS IV) that has been shown to possess potentially significant cardioprotective effects. However, there are no reports concerning its interaction with human serum albumin (HSA) and toxicology in vertebrates. The present investigation was undertaken to characterize the interaction of AGS IV and LS-102 with HSA using equilibrium dialysis and UHPLC-MS/MS methods, along with computational methods. Notably, the effects of AGS IV and LS-102 were studied in vivo using the zebrafish embryo model. Markers related to embryonic cardiotoxicity and thrombosis were evaluated. We showed that the plasma protein binding rate of AGS IV (94.04%–97.42%) was significantly higher than that of LS-102 (66.90%–69.35%). Through site marker competitive experiments and molecular docking, we found that AGS IV and LS-102 were located at the interface of subdomains IIA and IIIA, but the site I might be the primary binding site. Molecular dynamics revealed that AGS IV showed a higher binding free energy mainly due to the stronger hydrophobic and hydrogen bonding interactions. Moreover, the secondary structure implied no obvious effect on the protein structure and conformation during the binding of LS-102. LS-102 significantly ameliorated the astramizole-induced heart rate slowing, increased SV-BA spacing, and prevented arachidonic acid-induced thrombosis in zebrafish. To our knowledge, we are the first to reveal that LS-102 binds to HSA with reversible and moderate affinity, indicating its easy diffusion from the circulatory system to the target tissue, thereby providing significant insights into its pharmacokinetic and pharmacodynamic properties when spread in the human body. Our results also provide a reference for the rational clinical application of LS-102 in the cardiovascular field.
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Affiliation(s)
- You-Jiao Wu
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macao, SAR, China
| | - Zhan-Hua Li
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macao, SAR, China
| | - Jiu-Yan Li
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macao, SAR, China
| | - Yan Zhou
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Run-Yue Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Xiao-Yi Chen
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macao, SAR, China
| | - Lin-Sen Qing
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
- *Correspondence: Lin-Sen Qing, ; Pei Luo,
| | - Pei Luo
- State Key Laboratories for Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macao, SAR, China
- *Correspondence: Lin-Sen Qing, ; Pei Luo,
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10
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Interactions between stipuol enantiomers and human serum albumin. Food Chem 2022; 385:132686. [PMID: 35299022 DOI: 10.1016/j.foodchem.2022.132686] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 11/20/2022]
Abstract
Natural polyacetylenes occur in food and herbal plants, have a wide range of bioactivities, and are recognized as important nutraceuticals. Stipuol is a natural polyacetylene present in the edible plant Panax notoginseng. The present study was aimed to study interactions of rac-stipuol and its enantiomers with human serum albumin (HSA) using multi-spectroscopic, molecular modeling and microscale thermophoresis. Steady-state and time-resolved fluorescence spectra manifest that the fluorescence quenching mechanism is mainly static in type. The bindings of (S)-stipuol, (R)-stipuol, rac-stipuol lead to some microenvironmental and slight conformational changes of HSA. Competitive ligand displacement experiments and molecular modeling studies revealed that stipuol enantiomers bind to HSA at subdomain III (site IIA). The calculated values of Ka and Kd showed that (R)-stipuol had a stronger binding affinity than (S)-stipuol. The results are informative for use of stipuol as a nutraceutical to improve human health.
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11
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Deng T, Zhao J, Peng D, He X, Huang XA, Lin C, Zhu C, Wang L, Liu F. Probing the serum albumin binding site of fenamates and photochemical protein labeling with a fluorescent dye. Org Biomol Chem 2022; 20:5076-5085. [PMID: 35697330 DOI: 10.1039/d2ob00717g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Human serum albumin (HSA) can bind with numerous drugs, leading to a significant influence on drug pharmacokinetics as well as undesirable drug-drug interactions due to competitive binding. Probing the HSA drug binding site thus offers great opportunities to reveal drug-HSA binding profiles. In the present study, a fluorescent probe (E)-4-(2-(5-(4-(diphenylamino)phenyl)thiophen-2-yl)vinyl)-1-propylpyridin-1-ium (TTPy) has been prepared, which exhibits enhancement of deep-red to near-infrared (NIR) fluorescence upon HSA binding. The competitive binding assay indicated that TTPy can target the HSA binding site of fenamates, a group of non-steroidal anti-inflammatory drugs (NSAIDs), with moderate binding affinity (1.95 × 106 M-1 at 303 K). More interestingly, TTPy enables fluorescent labeling of HSA upon visible light irradiation. This study provides promising ways for HSA drug binding site identification and photochemical protein labeling.
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Affiliation(s)
- Tao Deng
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.,Lingnan Medical Research Center, the first Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China
| | - Jing Zhao
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China
| | - Danfeng Peng
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China
| | - Xinqian He
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China
| | - Xin-An Huang
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.,Lingnan Medical Research Center, the first Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China
| | - Chaozhan Lin
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
| | - Chenchen Zhu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
| | - Lei Wang
- Department of Cardiology, the 2nd Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
| | - Fang Liu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
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Hu H, Quintana J, Weissleder R, Parangi S, Miller M. Deciphering albumin-directed drug delivery by imaging. Adv Drug Deliv Rev 2022; 185:114237. [PMID: 35364124 DOI: 10.1016/j.addr.2022.114237] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/10/2022] [Accepted: 03/23/2022] [Indexed: 01/03/2023]
Abstract
Albumin is the most abundant plasma protein, exhibits extended circulating half-life, and its properties have long been exploited for diagnostics and therapies. Many drugs intrinsically bind albumin or have been designed to do so, yet questions remain about true rate limiting factors that govern albumin-based transport and their pharmacological impacts, particularly in advanced solid cancers. Imaging techniques have been central to quantifying - at a molecular and single-cell level - the impact of mechanisms such as phagocytic immune cell signaling, FcRn-mediated recycling, oncogene-driven macropinocytosis, and albumin-drug interactions on spatial albumin deposition and related pharmacology. Macroscopic imaging of albumin-binding probes quantifies vessel structure, permeability, and supports efficiently targeted molecular imaging. Albumin-based imaging in patients and animal disease models thus offers a strategy to understand mechanisms, guide drug development and personalize treatments.
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Wei Y, Li S, Li Z, Wan Z, Lin J. Interpretable-ADMET: a web service for ADMET prediction and optimization based on deep neural representation. Bioinformatics 2022; 38:2863-2871. [PMID: 35561160 DOI: 10.1093/bioinformatics/btac192] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 03/05/2022] [Accepted: 03/28/2022] [Indexed: 11/15/2022] Open
Abstract
MOTIVATION In the process of discovery and optimization of lead compounds, it is difficult for non-expert pharmacologists to intuitively determine the contribution of substructure to a particular property of a molecule. RESULTS In this work, we develop a user-friendly web service, named interpretable-absorption, distribution, metabolism, excretion and toxicity (ADMET), which predict 59 ADMET-associated properties using 90 qualitative classification models and 28 quantitative regression models based on graph convolutional neural network and graph attention network algorithms. In interpretable-ADMET, there are 250 729 entries associated with 59 kinds of ADMET-associated properties for 80 167 chemical compounds. In addition to making predictions, interpretable-ADMET provides interpretation models based on gradient-weighted class activation map for identifying the substructure, which is important to the particular property. Interpretable-ADMET also provides an optimize module to automatically generate a set of novel virtual candidates based on matched molecular pair rules. We believe that interpretable-ADMET could serve as a useful tool for lead optimization in drug discovery. AVAILABILITY AND IMPLEMENTATION Interpretable-ADMET is available at http://cadd.pharmacy.nankai.edu.cn/interpretableadmet/. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Yu Wei
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
| | - Shanshan Li
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
- Platform of Pharmaceutical Intelligence, Tianjin International Joint Academy of Biomedicine, Tianjin 300457, China
| | - Zhonglin Li
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
- Platform of Pharmaceutical Intelligence, Tianjin International Joint Academy of Biomedicine, Tianjin 300457, China
| | - Ziwei Wan
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
- Platform of Pharmaceutical Intelligence, Tianjin International Joint Academy of Biomedicine, Tianjin 300457, China
| | - Jianping Lin
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
- Platform of Pharmaceutical Intelligence, Tianjin International Joint Academy of Biomedicine, Tianjin 300457, China
- Biodesign Center, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
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Zhao Z, Shi T, Chu Y, Cao Y, Cheng S, Na R, Wang Y. Comparison of the interactions of flupyrimin and nitenpyram with serum albumins via multiple analysis methods. CHEMOSPHERE 2022; 289:133139. [PMID: 34863729 DOI: 10.1016/j.chemosphere.2021.133139] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 06/13/2023]
Abstract
Flupyrimin and nitenpyram are emerging neonicotinoid insecticides that may cause potential harm to the human body. In the present work, the interactions of flupyrimin/nitenpyram with serum albumins under normal physiological conditions were thoroughly studied by using multiple spectroscopic techniques, DFT calculations and molecular docking. Flupyrimin/nitenpyram can quench the endogenous fluorescence of HSA/BSA and form a complex with HSA/BSA through a static process, causing conformational and secondary structure changes of HSA/BSA. Thermodynamic analysis shows that the combination of flupyrimin/nitenpyram with HSA/BSA is a spontaneous process, mainly driven by hydrogen bonds and hydrophobic forces. Site marking and molecular docking experiments indicated that flupyrimin/nitenpyram binds with HSA/BSA at site II (subdomain IIIA). The binding constant Ka in HSA-flupyrimin, HSA-nitenpyram, BSA-flupyrimin and BSA-nitenpyram systems at 298 K was 2.11 × 105 M-1, 2.35 × 105 M-1, 1.91 × 105 M-1 and 2.11 × 105 M-1, respectively. The binding constant Ka of nitenpyram with HSA/BSA was greater than flupyrimin, indicating that nitenpyram binds HSA/BSA was more stable than that of flupyrimin, which was consistent with the DFT calculation. In addition, the acute toxicity bioassay showed that flupyrimin and nitenpyram exhibited low toxicity to zebrafish, with 96 h LC50 values of 181.662 and 250.658 mg a. i. L-1, respectively. These results can help understand the interactions of flupyrimin/nitenpyram with HSA/BSA.
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Affiliation(s)
- Zongyuan Zhao
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Taozhong Shi
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Ying Chu
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Yingying Cao
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Shuang Cheng
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Risong Na
- Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, College of Plant Protection, Henan Agricultural University, Wenhua Road No. 95, Zhengzhou, 450002, China
| | - Yi Wang
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China.
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15
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Parsekar S, Paliwal K, Haldar P, Antharjanam PKS, Kumar M. Synthesis, Characterization, Crystal Structure, DNA and HSA Interactions, and Anticancer Activity of a Mononuclear Cu(II) Complex with a Schiff Base Ligand Containing a Thiadiazoline Moiety. ACS OMEGA 2022; 7:2881-2896. [PMID: 35097283 PMCID: PMC8792924 DOI: 10.1021/acsomega.1c05750] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/30/2021] [Indexed: 05/07/2023]
Abstract
A mononuclear Cu(II) complex [Cu(HL)(o-phen)]·H2O (1) [H3L =, o-phen = 1,10-phenanthroline] was isolated from methanol, and its X-ray single-crystal structure was determined. Frozen glass X-band EPR of 1 in dimethylformamide (DMF) at LNT showed a spectrum that is characteristic of a monomeric tetragonal character with g ∥ = 2.164, g ⊥ = 2.087, A ∥ = 19.08 mT, and A ⊥ ≤ 4 mT. Electronic spectroscopic studies using calf thymus DNA (CT-DNA) showed strong binding affinity of 1 as reflected from its intrinsic binding constant (K b) value of 2.85 × 105 M-1. Competitive behavior of 1 with ethidium bromide (EB) displayed intercalative binding of DNA (K app = 1.3 × 106 M-1). The compound displayed significant oxidative cleavage of pUC19 DNA. The interaction between HSA and complex 1 was examined by employing fluorescence and electronic absorption spectroscopic experiments. The secondary and tertiary structures of HSA were found to be altered as suggested by three-dimensional (3D) fluorescence experiments. The affinity of 1 to bind to HSA was found to be strong as indicated from its value of the binding constant (K a = 2.89 × 105 M-1). Intrinsic fluorescence of the protein was found to be reduced through a mechanism of static quenching as suggested from the k q (2.01 × 1013 M-1 s-1) value, the bimolecular quenching constant. The Förster resonance energy transfer (FRET) process may also be accounted for such a high k q value. The r value (2.85 nm) calculated from FRET theory suggested that the distance between complex 1 (acceptor) and HSA (donor) is quite close. Complex 1 primarily bound to HSA in subdomain IIA as suggested by molecular docking studies. IC50 values (0.80 and 0.43 μM, respectively) obtained from the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay with HeLa and MCF7 cells suggested remarkable in vitro anticancer activity of 1. Nuclear dual staining assays revealed that cell death occurred via apoptosis in HeLa cells and reactive oxygen species (ROS) accumulation caused apoptosis induction. On treatment with a 5 μM dose of 1 in HeLa cells, the cell population significantly increased in the G2/M phase, while it was decreased in G0/G1 and S phases as compared to the control, clearly indicating G2/M phase arrest.
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Affiliation(s)
- Sidhali
U. Parsekar
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
| | - Kumudini Paliwal
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
| | - Paramita Haldar
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
| | | | - Manjuri Kumar
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
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Li J, Yanagisawa K, Yoshikawa Y, Ohue M, Akiyama Y. Plasma protein binding prediction focusing on residue-level features and circularity of cyclic peptides by deep learning. Bioinformatics 2021; 38:1110-1117. [PMID: 34849593 PMCID: PMC8796384 DOI: 10.1093/bioinformatics/btab726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/22/2021] [Accepted: 10/11/2021] [Indexed: 02/03/2023] Open
Abstract
MOTIVATION In recent years, cyclic peptide drugs have been receiving increasing attention because they can target proteins that are difficult to be tackled by conventional small-molecule drugs or antibody drugs. Plasma protein binding rate (%PPB) is a significant pharmacokinetic property of a compound in drug discovery and design. However, due to structural differences, previous computational prediction methods developed for small-molecule compounds cannot be successfully applied to cyclic peptides, and methods for predicting the PPB rate of cyclic peptides with high accuracy are not yet available. RESULTS Cyclic peptides are larger than small molecules, and their local structures have a considerable impact on PPB; thus, molecular descriptors expressing residue-level local features of cyclic peptides, instead of those expressing the entire molecule, as well as the circularity of the cyclic peptides should be considered. Therefore, we developed a prediction method named CycPeptPPB using deep learning that considers both factors. First, the macrocycle ring of cyclic peptides was decomposed residue by residue. The residue-based descriptors were arranged according to the sequence information of the cyclic peptide. Furthermore, the circular data augmentation method was used, and the circular convolution method CyclicConv was devised to express the cyclic structure. CycPeptPPB exhibited excellent performance, with mean absolute error (MAE) of 4.79% and correlation coefficient (R) of 0.92 for the public drug dataset, compared to the prediction performance of the existing PPB rate prediction software (MAE=15.08%, R=0.63). AVAILABILITY AND IMPLEMENTATION The data underlying this article are available in the online supplementary material. The source code of CycPeptPPB is available at https://github.com/akiyamalab/cycpeptppb. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Jianan Li
- Department of Computer Science, School of Computing, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan,AIST-TokyoTech Real World Big-Data Computation Open Innovation Laboratory (RWBC-OIL), National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8560, Japan
| | - Keisuke Yanagisawa
- Department of Computer Science, School of Computing, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan,Middle-Molecule IT-based Drug Discovery Laboratory (MIDL), Tokyo Institute of Technology, Kawasaki, Kanagawa 210-0821, Japan
| | - Yasushi Yoshikawa
- Department of Computer Science, School of Computing, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan,Middle-Molecule IT-based Drug Discovery Laboratory (MIDL), Tokyo Institute of Technology, Kawasaki, Kanagawa 210-0821, Japan
| | - Masahito Ohue
- Department of Computer Science, School of Computing, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan,Middle-Molecule IT-based Drug Discovery Laboratory (MIDL), Tokyo Institute of Technology, Kawasaki, Kanagawa 210-0821, Japan
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17
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Elangovan A, Suresh D, Tarim AO, Upendran A, Kannan R. Controlled assembly of gold and albumin nanoparticles to form hybrid multimeric nanomaterials. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Akhilan Elangovan
- Department of Bioengineering University of Missouri Columbia Missouri USA
| | - Dhananjay Suresh
- Department of Bioengineering University of Missouri Columbia Missouri USA
- Department of Radiology University of Missouri Columbia Missouri USA
| | - Andrew O. Tarim
- Department of Bioengineering University of Missouri Columbia Missouri USA
| | - Anandhi Upendran
- Department of Medical Pharmacology & Physiology University of Missouri Columbia Missouri USA
- Institute of Clinical and Translational Science University of Missouri Columbia Missouri USA
| | - Raghuraman Kannan
- Department of Bioengineering University of Missouri Columbia Missouri USA
- Department of Radiology University of Missouri Columbia Missouri USA
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18
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Narváez‐Pita X, Meléndez E. Binding studies of ferrocene‐steroid conjugates with human serum albumin as potential drug carrier using fluorescence spectroscopy and in silico docking approach. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
| | - Enrique Meléndez
- Department of Chemistry University of Puerto Rico Mayaguez Puerto Rico
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19
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Fliszár-Nyúl E, Faisal Z, Mohos V, Derdák D, Lemli B, Kálai T, Sár C, Zsidó BZ, Hetényi C, Horváth ÁI, Helyes Z, Deme R, Bogdán D, Czompa A, Mátyus P, Poór M. Interaction of SZV 1287, a novel oxime analgesic drug candidate, and its metabolites with serum albumin. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115945] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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20
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Effective exposure of chemicals in in vitro cell systems: A review of chemical distribution models. Toxicol In Vitro 2021; 73:105133. [DOI: 10.1016/j.tiv.2021.105133] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/11/2021] [Accepted: 02/25/2021] [Indexed: 12/23/2022]
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21
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Bone C, Squires EJ. The Binding of Free and Sulfated Androstenone in the Plasma of the Boar. Animals (Basel) 2021; 11:ani11051464. [PMID: 34065189 PMCID: PMC8161284 DOI: 10.3390/ani11051464] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/13/2021] [Accepted: 05/18/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Boar taint is characterized by an off-odor or off-flavor in heated pork products that is caused by the accumulation of androstenone in the fat. We have previously demonstrated that androstenone is transported to the fat bound by the plasma protein albumin; however, it is unclear if androstenone sulfate, which is more abundant in the circulation, is transported in the same manner and if the transport of androstenone in the plasma influences the degree of accumulation in the fat. In this article, we determined that androstenone sulfate bound minimally in the plasma of the boar and suggested that this may leave it readily available to enter peripheral tissues, such as the fat where it may enzymatically return free androstenone. Additionally, we demonstrated that the binding of androstenone in the plasma varies significantly between boars with high and low concentrations of androstenone in the fat. This suggests that the binding of androstenone to albumin in the plasma affects the transport and distribution of androstenone within the boar. Abstract Androstenone circulates in the plasma bound to albumin before accumulating in the fat, resulting in the development of boar taint. Androstenone sulfate is more abundant in the circulation than free androstenone; however, it is unclear how androstenone sulfate is transported in the plasma and if steroid transport affects the development of boar taint. Therefore, the purpose of this study was to characterize the binding of androstenone sulfate in boar plasma and determine if variability in steroid binding affects the accumulation of androstenone in the fat. [3H]-androstenone sulfate was incubated with plasma and the steroid binding was quantified using gel filtration chromatography. Inter-animal variability was assessed by quantifying androstenone binding specificity in plasma obtained from boars that had high or low fat androstenone concentrations at slaughter. Androstenone sulfate bound minimally in the plasma and to isolated albumin, which suggests that it is transported primarily in solution. The specific binding of androstenone quantified in plasma and isolated albumin from low fat androstenone animals was significantly higher (p = 0.01) than in high fat androstenone boars. These results indicate that the binding of androstenone to albumin varies amongst individual animals and affects the transport of androstenone in the plasma and accumulation in the fat of the boar.
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22
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In silico and experimental studies of bovine serum albumin-encapsulated carbenoxolone nanoparticles with reduced cytotoxicity. Colloids Surf B Biointerfaces 2021; 202:111670. [PMID: 33740634 DOI: 10.1016/j.colsurfb.2021.111670] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 02/15/2021] [Accepted: 03/01/2021] [Indexed: 12/30/2022]
Abstract
Carbenoxolone (CBX) is a semi-synthetic plant derivative with pleiotropic pharmacological properties like anti-microbial and anti-inflammatory activities. Though approved for treatment of gastric ulcers, its use is limited due to adverse effects such as cytotoxicity. Bovine serum albumin (BSA) is a natural, non-toxic protein with high water-solubility and low immunogenicity, and is widely used as a nanocarrier for targeted drug delivery. In the present study, controlled release BSA-CBX nanoparticles (NPs) were synthesized by desolvation method to reduce drug cytotoxicity. These NPs showed desirable physicochemical properties such as particle size (∼240 nm), polydispersity index (0.08), zeta potential (-7.12 mV), drug encapsulation efficiency (72 %), and were stable for at least 3 months at room temperature. The drug was released from the BSA-CBX NPs in a biphasic manner in vitro following non-fickian diffusion. Computational analysis determined that the binding between BSA and CBX occurred through van der Waals forces, hydrophobic interactions, and hydrogen bonds with 93 % steric stability. Further, the cytotoxic assays demonstrated ∼1.8-4.9-fold reduction in cytotoxicity using three human cell lines (A549, MCF-7, and U-87). Subsequently, this novel CBX formulation with BSA as an efficient carrier can potentially be used for diverse biomedical applications.
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23
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FRET theoretical predictions concerning freely diffusive dyes inside spherical container: how to choose the best pair? Photochem Photobiol Sci 2021; 20:275-283. [PMID: 33721256 DOI: 10.1007/s43630-021-00016-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/27/2021] [Indexed: 10/22/2022]
Abstract
FRET has been massively used to see if biomolecules were bounded or not by labelling both biomolecules by one dye of a FRET pair. This should give a digital answer to the question (fluorescence of the acceptor: high FRET efficency: molecules associated, fluorescence of the donor: low FRET efficency: molecules dissociated). This has been used, inter alia, at the single-molecule scale in containers, such as liposomes. One perspective of the field is to reduce the container's size to study the effect of confinement on binding. The problem is that if the two dyes are encapsulated inside a small liposome, they could have a significant probability to be close one from the other one (and thus to undergo a high FRET efficiency event without binding). This is why we suggest here a theoretical model which gives mean FRET efficiency as a function of liposome radius (the model applies to any spherical container) and Förster radius to help the experimentalist to choose their experimental set-up. Besides, the influence of side effect on mean FRET efficiency has been studied as well. We show here that if this "background FRET" is most of the time non-quantitative, it can remain significant and which makes data analysis trickier. We could show as well that if this background FRET obviously increases when liposome radius decreases, this variation was lower than the one which could be expected because of side effect. We show as well the FRET efficiency function distribution which let the experimentalist know the probability to get one FRET efficiency value.
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Golianová K, Havadej S, Verebová V, Uličný J, Holečková B, Staničová J. Interaction of Conazole Pesticides Epoxiconazole and Prothioconazole with Human and Bovine Serum Albumin Studied Using Spectroscopic Methods and Molecular Modeling. Int J Mol Sci 2021; 22:1925. [PMID: 33672042 PMCID: PMC7919476 DOI: 10.3390/ijms22041925] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/05/2021] [Accepted: 02/09/2021] [Indexed: 01/14/2023] Open
Abstract
The interactions of epoxiconazole and prothioconazole with human serum albumin and bovine serum albumin were investigated using spectroscopic methods complemented with molecular modeling. Spectroscopic techniques showed the formation of pesticide/serum albumin complexes with the static type as the dominant mechanism. The association constants ranged from 3.80 × 104-6.45 × 105 L/mol depending on the pesticide molecule (epoxiconazole, prothioconazole) and albumin type (human or bovine serum albumin). The calculated thermodynamic parameters revealed that the binding of pesticides into serum albumin macromolecules mainly depended on hydrogen bonds and van der Waals interactions. Synchronous fluorescence spectroscopy and the competitive experiments method showed that pesticides bind to subdomain IIA, near tryptophan; in the case of bovine serum albumin also on the macromolecule surface. Concerning prothioconazole, we observed the existence of an additional binding site at the junction of domains I and III of serum albumin macromolecules. These observations were corroborated well by molecular modeling predictions. The conformation changes in secondary structure were characterized by circular dichroism, three-dimensional fluorescence, and UV/VIS absorption methods.
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Affiliation(s)
- Katarína Golianová
- Faculty of Science, Pavol Jozef Šafárik University, Jesenná 5, 041 54 Košice, Slovakia; (K.G.); (S.H.); (J.U.)
| | - Samuel Havadej
- Faculty of Science, Pavol Jozef Šafárik University, Jesenná 5, 041 54 Košice, Slovakia; (K.G.); (S.H.); (J.U.)
| | - Valéria Verebová
- University of Veterinary Medicine & Pharmacy, Komenského 73, 041 81 Košice, Slovakia; (V.V.); (B.H.)
| | - Jozef Uličný
- Faculty of Science, Pavol Jozef Šafárik University, Jesenná 5, 041 54 Košice, Slovakia; (K.G.); (S.H.); (J.U.)
| | - Beáta Holečková
- University of Veterinary Medicine & Pharmacy, Komenského 73, 041 81 Košice, Slovakia; (V.V.); (B.H.)
| | - Jana Staničová
- University of Veterinary Medicine & Pharmacy, Komenského 73, 041 81 Košice, Slovakia; (V.V.); (B.H.)
- First Faculty of Medicine, Charles University, Kateřinská 1, 121 08 Prague, Czech Republic
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25
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Parsekar SU, Haldar P, Antharjanam PS, Kumar M, Koley AP. Synthesis, characterization, crystal structure, DNA and human serum albumin interactions, as well as antiproliferative activity of a Cu(II) complex containing a Schiff base ligand formed in situ from the Cu(II)‐induced cyclization of 1,5‐bis(salicylidene)thiocarbohydrazide. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sidhali U. Parsekar
- Department of Chemical Engineering Birla Institute of Technology and Science‐Pilani, K.K. Birla Goa Campus Zuarinagar India
| | - Paramita Haldar
- Department of Chemical Engineering Birla Institute of Technology and Science‐Pilani, K.K. Birla Goa Campus Zuarinagar India
| | | | - Manjuri Kumar
- Department of Chemical Engineering Birla Institute of Technology and Science‐Pilani, K.K. Birla Goa Campus Zuarinagar India
| | - Aditya P. Koley
- Department of Chemistry Birla Institute of Technology and Science‐Pilani, K.K. Birla Goa Campus Zuarinagar India
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Patel A, Redinger N, Richter A, Woods A, Neumann PR, Keegan G, Childerhouse N, Imming P, Schaible UE, Forbes B, Dailey LA. In vitro and in vivo antitubercular activity of benzothiazinone-loaded human serum albumin nanocarriers designed for inhalation. J Control Release 2020; 328:339-349. [PMID: 32827612 DOI: 10.1016/j.jconrel.2020.08.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 08/10/2020] [Accepted: 08/16/2020] [Indexed: 01/03/2023]
Abstract
The aim of this study was to investigate the potential of human serum albumin (HSA) as a solubilising agent/drug delivery vehicle for pulmonary administration of antimycobacterial benzothiazinone (BTZ) compounds. The solubility of four novel BTZ compounds (IR 20, IF 274, FG 2, AR 112) was enhanced 2 to 140-fold by incubation with albumin (0.38-134 μg/mL). Tryptophan 213 residue quenching studies indicated moderate binding strength to Sudlow's site I. Nanoparticle manufacture achieved 37-60% encapsulation efficiency in HSA particles (169 nm, zeta potential -31 mV). Drug release was triggered by proteases with >50% released in 4 h. The antimycobacterial activity of IR 20 and FG 2 loaded in HSA nanoparticles was enhanced compared to DMSO/phosphate buffered saline (PBS) or albumin/PBS solutions in an in vitro M. tuberculosis-infected macrophage model. Intranasal instillation was used to achieve pulmonary delivery daily over 10 days to M. tuberculosis infected mice for FG2 HSA nanoparticles (0.4 mg/kg), FG 2 DMSO/saline (0.4 and 8 mg/kg) and a reference compound, BTZ043, DMSO/saline (0.4 and 8 mg/kg). A lower lung M. tuberculosis burden was apparent for all BTZ cohorts, but only significant for BTZ043 at both doses. In conclusion, mechanisms of HSA nanoparticle loading and release of BTZ compounds were demonstrated, enhanced antimycobacterial activity of the nanoparticle formulations was demonstrated in a biorelevant in vitro bioassay and the effectiveness of BTZ by pulmonary delivery in vivo was established with pilot evidence for effectiveness when delivered by HSA nanoparticles. Finally, the feasibility of developing an inhaled nanoparticle-in-microparticle powder formulation was ascertained.
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Affiliation(s)
- Ayasha Patel
- Drug Delivery Research Group, Institute of Pharmaceutical Science, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Natalja Redinger
- Forschungszentrum Borstel - Leibniz Lung Center, PA Infections, Div. Cellular Microbiology, Parkallee 35, 23845 Borstel, Germany; German Center for Infection Research (DZIF), Partner site Hamburg-Lübeck-Borstel, Germany
| | - Adrian Richter
- Martin Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str.4, 06120 Halle, Germany
| | - Arcadia Woods
- Drug Delivery Research Group, Institute of Pharmaceutical Science, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Paul Robert Neumann
- Martin Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str.4, 06120 Halle, Germany
| | - Gemma Keegan
- Vectura Group plc, One Prospect West, Chippenham SN14 6FH, United Kingdom
| | - Nick Childerhouse
- Vectura Group plc, One Prospect West, Chippenham SN14 6FH, United Kingdom
| | - Peter Imming
- Martin Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str.4, 06120 Halle, Germany
| | - Ulrich E Schaible
- Forschungszentrum Borstel - Leibniz Lung Center, PA Infections, Div. Cellular Microbiology, Parkallee 35, 23845 Borstel, Germany; German Center for Infection Research (DZIF), Partner site Hamburg-Lübeck-Borstel, Germany
| | - Ben Forbes
- Drug Delivery Research Group, Institute of Pharmaceutical Science, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom.
| | - Lea Ann Dailey
- University of Vienna, Althanstraße 14, 1090 Vienna, Austria
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27
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Parsekar SU, Velankanni P, Sridhar S, Haldar P, Mate NA, Banerjee A, Sudhadevi Antharjanam PK, Koley AP, Kumar M. Protein binding studies with human serum albumin, molecular docking and in vitro cytotoxicity studies using HeLa cervical carcinoma cells of Cu(ii)/Zn(ii) complexes containing a carbohydrazone ligand. Dalton Trans 2020; 49:2947-2965. [PMID: 32073070 DOI: 10.1039/c9dt04656a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The interaction of two binuclear mixed ligand Cu(ii) complexes [Cu(o-phen)LCu(OAc)] (1) and [Cu(o-phen)LCu(o-phen)](OAc) (2) (H3L = o-HOC6H4C(H)[double bond, length as m-dash]N-NH-C(OH)[double bond, length as m-dash]N-N[double bond, length as m-dash]C(H)-C6H4OH-o) and a new mononuclear Zn(ii) complex [Zn(HL)(o-phen)(H2O)](OAc)·H2O (3) (H2L = o-HOC6H4-C(H)[double bond, length as m-dash]N-NH-C([double bond, length as m-dash]O)-NH-N[double bond, length as m-dash]C(H)-C6H4OH-o, o-phen = 1,10-phenanthroline, and OAc = CH3COO-) with human serum albumin (HSA) was studied using fluorescence quenching, synchronous and 3D fluorescence measurements and UV-vis spectroscopy. 3D fluorescence studies showed that the HSA structure was altered at the secondary and tertiary levels upon binding with the complexes. This was further supported by the electronic absorption spectral studies of HSA in the absence and presence of the compounds. The average binding distance (r) between HSA and the complexes was obtained by Förster's resonance energy transfer theory. Complex 3 was structurally characterized by X-ray crystallography. Molecular docking studies indicated that all three complexes primarily bind to HSA in subdomain IIA with amino acid residues such as Arg218 and Lys199 which are located at the entrance of Sudlow's site I. The in vitro cytotoxicities of complexes 1-3 against HeLa cells showed promising anticancer activity (IC50 = 3.5, 3.9 and 16.9 μM for 1, 2 and 3, respectively). Live cell time lapse imaging for 1 was done to capture the dynamic behavior of the cells upon treatment with the complex. Cell cycle analysis by flow cytometry with HeLa cells indicated that 1 and 2 induced cell cycle arrest in the G2/M phase while 3 induced arrest in the G0/G1 phase leading to cell death. Compounds 1 and 2 but not 3 induced apoptosis through the mitochondrial pathway as suggested from the relative p53, caspase3 and bcl2 mRNA levels measured by real-time quantitative PCR analysis.
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Affiliation(s)
- Sidhali U Parsekar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Priyanka Velankanni
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Shruti Sridhar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India. and Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - Paramita Haldar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Nayan A Mate
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - Arnab Banerjee
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - P K Sudhadevi Antharjanam
- Sophisticated Analytical Instrument Facility, Indian Institute of Technology-Madras, Chennai 600 036, India
| | - Aditya P Koley
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar, Goa 403 726, India.
| | - Manjuri Kumar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
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28
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Shah JV, Gonda A, Pemmaraju R, Subash A, Bobadilla Mendez C, Berger M, Zhao X, He S, Riman RE, Tan MC, Pierce MC, Moghe PV, Ganapathy V. Shortwave Infrared-Emitting Theranostics for Breast Cancer Therapy Response Monitoring. Front Mol Biosci 2020; 7:569415. [PMID: 33134314 PMCID: PMC7575924 DOI: 10.3389/fmolb.2020.569415] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 09/14/2020] [Indexed: 12/21/2022] Open
Abstract
Therapeutic drug monitoring (TDM) in cancer, while imperative, has been challenging due to inter-patient variability in drug pharmacokinetics. Additionally, most pharmacokinetic monitoring is done by assessments of the drugs in plasma, which is not an accurate gauge for drug concentrations in target tumor tissue. There exists a critical need for therapy monitoring tools that can provide real-time feedback on drug efficacy at target site to enable alteration in treatment regimens early during cancer therapy. Here, we report on theranostic optical imaging probes based on shortwave infrared (SWIR)-emitting rare earth-doped nanoparticles encapsulated with human serum albumin (abbreviated as ReANCs) that have demonstrated superior surveillance capability for detecting micro-lesions at depths of 1 cm in a mouse model of breast cancer metastasis. Most notably, ReANCs previously deployed for detection of multi-organ metastases resolved bone lesions earlier than contrast-enhanced magnetic resonance imaging (MRI). We engineered tumor-targeted ReANCs carrying a therapeutic payload as a potential theranostic for evaluating drug efficacy at the tumor site. In vitro results demonstrated efficacy of ReANCs carrying doxorubicin (Dox), providing sustained release of Dox while maintaining cytotoxic effects comparable to free Dox. Significantly, in a murine model of breast cancer lung metastasis, we demonstrated the ability for therapy monitoring based on measurements of SWIR fluorescence from tumor-targeted ReANCs. These findings correlated with a reduction in lung metastatic burden as quantified via MRI-based volumetric analysis over the course of four weeks. Future studies will address the potential of this novel class of theranostics as a preclinical pharmacological screening tool.
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Affiliation(s)
- Jay V Shah
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Amber Gonda
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Rahul Pemmaraju
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Aishwarya Subash
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | | | - Marissa Berger
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Xinyu Zhao
- Engineering Product Development, Singapore University of Technology and Design, Tampines, Singapore
| | - Shuqing He
- Engineering Product Development, Singapore University of Technology and Design, Tampines, Singapore
| | - Richard E Riman
- Department of Materials Science and Engineering, Rutgers University, Piscataway, NJ, United States
| | - Mei Chee Tan
- Engineering Product Development, Singapore University of Technology and Design, Tampines, Singapore
| | - Mark C Pierce
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Prabhas V Moghe
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States.,Department of Chemical & Biochemical Engineering, Rutgers University, Piscataway, NJ, United States
| | - Vidya Ganapathy
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, United States
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Tumir LM, Zonjić I, Žuna K, Brkanac SR, Jukić M, Huđek A, Durgo K, Crnolatac I, Glavaš-Obrovac L, Cardullo N, Pulvirenti L, Muccilli V, Tringali C, Stojković MR. Synthesis, DNA/RNA-interaction and biological activity of benzo[k,l]xanthene lignans. Bioorg Chem 2020; 104:104190. [PMID: 32919130 DOI: 10.1016/j.bioorg.2020.104190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/30/2020] [Accepted: 08/05/2020] [Indexed: 12/20/2022]
Abstract
Interactions of two newly synthesized and six previously reported benzoxanthene lignans (BXLs), analogues of rare natural products, with DNA/RNA, G-quadruplex and HSA were evaluated by a set of spectrophotometric methods. Presence/absence of methoxy and hydroxy groups on the benzoxanthene core and minor modifications at C-1/C-2 side pendants - presence/absence of phenyl ring and presence/absence of methoxy and hydroxy groups on phenyl ring - influenced the fluorescence changes and the binding strength to double-stranded (ds-) and G-quadruplex structures. In general, compounds without phenyl ring showed stronger fluorescence changes upon binding than phenyl-substituted BXLs. On the other hand, BXLs with an unsubstituted phenyl ring showed the best stabilization effects of G-quadruplex. Circular dichroism spectroscopy results suggest mixed binding mode, groove binding and partial intercalation, to ds-DNA/RNA and end-stacking to top or bottom G-tetrads as the main binding modes of BXLs to those targets. All compounds exhibited micromolar binding affinities toward HSA and an increased protein thermal stability. Moderate to strong antiradical scavenging activity was observed for all BXLs with hydroxy groups at C-6, C-9 and C-10 positions of the benzoxanthene core, except for derivative bearing methoxy groups at these positions. BXLs with unsubstituted or low-substituted phenyl ring and one derivative without phenyl ring showed strong growth inhibition of Gram-positive Staphylococcus aureus. All compounds showed moderate to strong tumor cell growth-inhibitory activity and cytotoxicity.
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Affiliation(s)
- Lidija-Marija Tumir
- Ruđer Bošković Institute, Division of Organic Chemistry and Biochemistry, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Iva Zonjić
- Ruđer Bošković Institute, Division of Organic Chemistry and Biochemistry, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Kristina Žuna
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierrotijeva 6, 10000 Zagreb, Croatia
| | - Sandra Radić Brkanac
- University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6/III, HR-10 000 Zagreb, Croatia
| | - Marijana Jukić
- Department of Medicinal Chemistry, Biochemistry and Laboratory Medicine, Faculty of Medicine Osijek, Josip Juraj Strossmayer University of Osijek, Huttlerova 4, HR-31000 Osijek, Croatia
| | - Ana Huđek
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierrotijeva 6, 10000 Zagreb, Croatia
| | - Ksenija Durgo
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierrotijeva 6, 10000 Zagreb, Croatia
| | - Ivo Crnolatac
- Ruđer Bošković Institute, Division of Organic Chemistry and Biochemistry, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Ljubica Glavaš-Obrovac
- Department of Medicinal Chemistry, Biochemistry and Laboratory Medicine, Faculty of Medicine Osijek, Josip Juraj Strossmayer University of Osijek, Huttlerova 4, HR-31000 Osijek, Croatia
| | - Nunzio Cardullo
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, I-95125 Catania, Italy
| | - Luana Pulvirenti
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, I-95125 Catania, Italy
| | - Vera Muccilli
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, I-95125 Catania, Italy
| | - Corrado Tringali
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, I-95125 Catania, Italy
| | - Marijana Radić Stojković
- Ruđer Bošković Institute, Division of Organic Chemistry and Biochemistry, Bijenička cesta 54, 10000 Zagreb, Croatia.
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30
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Kollar J, Machacek M, Halaskova M, Lenco J, Kucera R, Demuth J, Rohlickova M, Hasonova K, Miletin M, Novakova V, Zimcik P. Cationic Versus Anionic Phthalocyanines for Photodynamic Therapy: What a Difference the Charge Makes. J Med Chem 2020; 63:7616-7632. [DOI: 10.1021/acs.jmedchem.0c00481] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jan Kollar
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Miloslav Machacek
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Marie Halaskova
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Juraj Lenco
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Radim Kucera
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Jiri Demuth
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Monika Rohlickova
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Katerina Hasonova
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Miroslav Miletin
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Veronika Novakova
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
| | - Petr Zimcik
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove 500 05, Czech Republic
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31
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Computational evaluation on the molecular conformation, vibrational spectroscopy, NBO analysis and molecular docking of betaxolol and betaxolol-chlorthalidone cocrystals. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127744] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Hazarika Z, Jha AN. Computational Analysis of the Silver Nanoparticle-Human Serum Albumin Complex. ACS OMEGA 2020; 5:170-178. [PMID: 31956763 PMCID: PMC6963898 DOI: 10.1021/acsomega.9b02340] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
Drug delivery in excess concentrations and at not-specified sites inside the human body adversely affects the body and gives rise to other diseases. Several methods have been developed to deliver the drugs in required amounts and at specific targets. Nanoparticle-mediated drug delivery is one such approach and has gained success at primary levels. The effect of nanoparticles on the human body needs important apprehension, and it has been unraveled by assessing the protein-nanoparticle interactions. Here, we have measured the impact of silver nanoparticles (AgNPs) on the human serum albumin (HSA) structure and function with the help of all-atom molecular dynamics simulations (MDS). HSA is a transport protein, and any change in the structure may obstruct its function. The post MD analyses showed that the NP interacts with HSA and the conjugated system got stabilized with time evolution of trajectories. The present investigation confirms that the AgNP interacts with HSA without affecting its tertiary and secondary structures and in turn the protein function as well. AgNP application is recommended in transporting conjugated drug molecules as it has no adverse effect on serum proteins. Since HSA is present in the circulatory system, it may open various applications of AgNPs in the biomedical field.
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33
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Rizvi MA, Hussain Z, Ali F, Amin A, Mir SH, Rydzek G, Jagtap RM, Pardeshi SK, Qadri RA, Ariga K. Bioactive supra decorated thiazolidine-4-carboxylic acid derivatives attenuate cellular oxidative stress by enhancing catalase activity. Phys Chem Chem Phys 2020; 22:7942-7951. [DOI: 10.1039/d0cp00253d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bioactive (2S,4R)-3-(tert-butoxycarbonyl)-2-(2-hydroxyphenyl)thiazolidine-4-carboxylic acid molecules restructure enzymes through complexation, allowing enhancing their activity to protect cells from oxidative stress.
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Affiliation(s)
| | - Zakir Hussain
- Department of Chemistry
- University of Kashmir
- Srinagar
- India
| | - Fasil Ali
- Department of Studies and Research in Biochemistry
- Mangalore University
- India
| | - Asif Amin
- Department of Biotechnology
- University of Kashmir
- Srinagar 190006
- India
| | - Sajjad Husain Mir
- Advanced Materials and Bio Engineering Research Centre (AMBER)
- Ireland
- Department of Chemistry
- Trinity College Dublin
- The University of Dublin
| | - Gaulthier Rydzek
- Institut Charles Gerhardt Montpellier
- UMR 5253
- CNRS
- ENSCM
- Univ. Montpellier
| | - Rohidas M. Jagtap
- Department of Chemistry
- Savitribai Phule Pune University
- Pune 411007
- India
| | | | - Raies A. Qadri
- Department of Biotechnology
- University of Kashmir
- Srinagar 190006
- India
| | - Katsuhiko Ariga
- World Premier International Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
- Graduate School of Frontier Sciences
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34
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Chadha N, Singh D, Milton MD, Mishra G, Daniel J, Mishra AK, Tiwari AK. Computational prediction of interaction and pharmacokinetics profile study for polyamino-polycarboxylic ligands on binding with human serum albumin. NEW J CHEM 2020. [DOI: 10.1039/c9nj05594k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Human serum albumin (HSA) is one of the most abundant plasma proteins available in blood and responsible for transport of fatty acids, drugs and metabolites at its binding sites which are very important for the assessment of pharmacokinetics profile of the polyamino-polycarboxylic ligands.
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Affiliation(s)
- Nidhi Chadha
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Delhi 110054
- India
- Department of Chemistry
| | - Dushyant Singh
- Department of Chemistry
- Christ Church P. G. College
- C S J M University
- Kanpur
- India
| | | | - Gauri Mishra
- Department of Zoology
- Swami Shraddhanand College
- University of Delhi
- Delhi 110036
- India
| | - Joseph Daniel
- Department of Chemistry
- Christ Church P. G. College
- C S J M University
- Kanpur
- India
| | - Anil K. Mishra
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Delhi 110054
- India
| | - Anjani K. Tiwari
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Delhi 110054
- India
- Department of Chemistry
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35
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Yosberto CM. Theoretical study on binding interactions of laccase-enzyme from Ganoderma weberianum with multiples ligand substrates with environmental impact. ACTA ACUST UNITED AC 2019. [DOI: 10.29328/journal.apb.1001007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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36
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Bruno A, Costantino G, Sartori L, Radi M. The In Silico Drug Discovery Toolbox: Applications in Lead Discovery and Optimization. Curr Med Chem 2019; 26:3838-3873. [PMID: 29110597 DOI: 10.2174/0929867324666171107101035] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/27/2017] [Accepted: 09/28/2017] [Indexed: 01/04/2023]
Abstract
BACKGROUND Discovery and development of a new drug is a long lasting and expensive journey that takes around 20 years from starting idea to approval and marketing of new medication. Despite R&D expenditures have been constantly increasing in the last few years, the number of new drugs introduced into market has been steadily declining. This is mainly due to preclinical and clinical safety issues, which still represent about 40% of drug discontinuation. To cope with this issue, a number of in silico techniques are currently being used for an early stage evaluation/prediction of potential safety issues, allowing to increase the drug-discovery success rate and reduce costs associated with the development of a new drug. METHODS In the present review, we will analyse the early steps of the drug-discovery pipeline, describing the sequence of steps from disease selection to lead optimization and focusing on the most common in silico tools used to assess attrition risks and build a mitigation plan. RESULTS A comprehensive list of widely used in silico tools, databases, and public initiatives that can be effectively implemented and used in the drug discovery pipeline has been provided. A few examples of how these tools can be problem-solving and how they may increase the success rate of a drug discovery and development program have been also provided. Finally, selected examples where the application of in silico tools had effectively contributed to the development of marketed drugs or clinical candidates will be given. CONCLUSION The in silico toolbox finds great application in every step of early drug discovery: (i) target identification and validation; (ii) hit identification; (iii) hit-to-lead; and (iv) lead optimization. Each of these steps has been described in details, providing a useful overview on the role played by in silico tools in the decision-making process to speed-up the discovery of new drugs.
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Affiliation(s)
- Agostino Bruno
- Experimental Therapeutics Unit, IFOM - The FIRC Institute for Molecular Oncology Foundation, Via Adamello 16 - 20139 Milano, Italy
| | - Gabriele Costantino
- Dipartimento di Scienze degli Alimenti e del Farmaco, Universita degli Studi di Parma, Viale delle Scienze, 27/A, 43124 Parma, Italy
| | - Luca Sartori
- Experimental Therapeutics Unit, IFOM - The FIRC Institute for Molecular Oncology Foundation, Via Adamello 16 - 20139 Milano, Italy
| | - Marco Radi
- Dipartimento di Scienze degli Alimenti e del Farmaco, Universita degli Studi di Parma, Viale delle Scienze, 27/A, 43124 Parma, Italy
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37
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Wang L, Wu X, Yang Y, Liu X, Zhu M, Fan S, Wang Z, Xue J, Hua R, Wang Y, Li QX. Multi-spectroscopic measurements, molecular modeling and density functional theory calculations for interactions of 2,7-dibromocarbazole and 3,6-dibromocarbazole with serum albumin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 686:1039-1048. [PMID: 31200302 DOI: 10.1016/j.scitotenv.2019.06.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/27/2019] [Accepted: 06/01/2019] [Indexed: 06/09/2023]
Abstract
2,7-Dibromocarbazole (2,7-DBCB) and 3,6-dibromocarbazole (3,6-DBCB) are emerging environmental pollutants, being potentially high risks to human health. In this study, interactions of the two compounds with human serum albumin (HSA) and bovine serum albumin (BSA) were investigated by molecular modeling, density functional theory calculations (DFT) and multispectral techniques. The static quenching interaction deduced in the fluorescence quenching experiment is confirmed by the time-resolved analyses. The interactions of the two compounds with HSA/BSA induce molecular microenvironment and conformation changes, as assessed by synchronous and 3D fluorescence spectra, together with a destruction of polypeptide carbonyl hydrogen bond network by circular dichroism and Fourier transform infrared analyses. The thermodynamic analysis indicated that the spontaneous interaction was hydrogen bonding and hydrophobic forces. The binding constant Ka at 298 K was 3.54 × 105 M-1 in HSA-2,7-DBCB, 6.63 × 105 M-1 in HSA-3,6-DBCB, 1.32 × 105 M-1 in BSA-2,7-DBCB and 2.17 × 105 M-1 in BSA-3,6-DBCB. These results indicates that 3,6-DBCB binds HSA/BSA more strongly than 2,7-DBCB, which was estimated with DFT calculations. Site marker competition experiments coupled with molecular modeling studies confirmed that both compounds bind HSA/BSA at site I (subdomain IIA). The results suggest that interactions between 2,7-DBCB and 3,6-DBCB with HSA and BSA may affect the normal physiological activities in human and animals.
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Affiliation(s)
- Lijun Wang
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Xiaoqin Wu
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Yanan Yang
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Xina Liu
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Meiqing Zhu
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Shisuo Fan
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Zhen Wang
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Jiaying Xue
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Rimao Hua
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China
| | - Yi Wang
- Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, No, 130 Changjiang West Road, Hefei 230036, China.
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, 1955 East-West Road, Honolulu, HI 96822, USA
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38
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Rohman MA, Baruah P, Bhatta A, Mitra S. Deciphering the interactions of substituted chromones possessing acetylcholinesterase inhibition activity in human serum albumin matrix. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111210] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mealey KL, Martinez SE, Villarino NF, Court MH. Personalized medicine: going to the dogs? Hum Genet 2019; 138:467-481. [PMID: 31032534 DOI: 10.1007/s00439-019-02020-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/19/2019] [Indexed: 12/13/2022]
Abstract
Interindividual variation in drug response occurs in canine patients just as it does in human patients. Although canine pharmacogenetics still lags behind human pharmacogenetics, significant life-saving discoveries in the field have been made over the last 20 years, but much remains to be done. This article summarizes the available published data about the presence and impact of genetic polymorphisms on canine drug transporters, drug-metabolizing enzymes, drug receptors/targets, and plasma protein binding while comparing them to their human counterparts when applicable. In addition, precision medicine in cancer treatment as an application of canine pharmacogenetics and pertinent considerations for canine pharmacogenetics testing is reviewed. The field is poised to transition from single pharmacogene-based studies, pharmacogenetics, to pharmacogenomic-based studies to enhance our understanding of interindividual variation of drug response in dogs. Advances made in the field of canine pharmacogenetics will not only improve the health and well-being of dogs and dog breeds, but may provide insight into individual drug efficacy and toxicity in human patients as well.
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Affiliation(s)
- Katrina L Mealey
- Program in Individualized Medicine (PrIMe), Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA, 99163, USA.
| | - Stephanie E Martinez
- Program in Individualized Medicine (PrIMe), Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA, 99163, USA
| | - Nicolas F Villarino
- Program in Individualized Medicine (PrIMe), Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA, 99163, USA
| | - Michael H Court
- Program in Individualized Medicine (PrIMe), Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA, 99163, USA
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Petito ES, Foster DJR, Ward MB, Sykes MJ. Molecular Modeling Approaches for the Prediction of Selected Pharmacokinetic Properties. Curr Top Med Chem 2019; 18:2230-2238. [PMID: 30569859 DOI: 10.2174/1568026619666181220105726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/22/2018] [Accepted: 12/15/2018] [Indexed: 02/06/2023]
Abstract
Poor profiles of potential drug candidates, including pharmacokinetic properties, have been acknowledged as a significant hindrance to the development of modern therapeutics. Contemporary drug discovery and development would be incomplete without the aid of molecular modeling (in-silico) techniques, allowing the prediction of pharmacokinetic properties such as clearance, unbound fraction, volume of distribution and bioavailability. As with all models, in-silico approaches are subject to their interpretability, a trait that must be balanced with accuracy when considering the development of new methods. The best models will always require reliable data to inform them, presenting significant challenges, particularly when appropriate in-vitro or in-vivo data may be difficult or time-consuming to obtain. This article seeks to review some of the key in-silico techniques used to predict key pharmacokinetic properties and give commentary on the current and future directions of the field.
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Affiliation(s)
- Emilio S Petito
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia Cancer Research Institute, Adelaide, South Australia 5001, Australia
| | - David J R Foster
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia Cancer Research Institute, Adelaide, South Australia 5001, Australia
| | - Michael B Ward
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia Cancer Research Institute, Adelaide, South Australia 5001, Australia
| | - Matthew J Sykes
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia Cancer Research Institute, Adelaide, South Australia 5001, Australia
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41
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Bertozo LDC, Philot EA, Lima AN, de Resende Lara PT, Scott AL, Ximenes VF. Interaction between 1-pyrenesulfonic acid and albumin: Moving inside the protein. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 208:243-254. [PMID: 30342339 DOI: 10.1016/j.saa.2018.10.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 10/04/2018] [Accepted: 10/11/2018] [Indexed: 06/08/2023]
Abstract
Due to the high sensitivity to alterations in microenvironment polarity of macromolecules, pyrene and its derivatives have long been applied in biosciences. Human serum albumin (HSA), besides its numerous physiological functions, is the main responsible by transport of endogenous and exogenous compounds in the circulatory system. Here, a comprehensive study was carry out to understand the interaction between HSA and the pyrene derivative 1-pyrenesulfonic acid (PMS), which showed a singular behaviour when bound to this protein. The complexation of PMS with HSA was studied by steady state, time-resolved and anisotropy fluorescence, induction of circular dichroism (ICD) and molecular docking. The fluorescence quenching of PMS by HSA was abnormal, being stronger at lower concentration of the quencher. Similar behaviour was obtained by measuring the ICD signal and fluorescence lifetime of PMS complexed in HSA. The displacement of PMS by site-specific drugs showed that this probe occupied both sites, but with higher affinity for site II. The movement of PMS between these main binding sites was responsible by the abnormal effect. Using the holo (PDB: ID 1A06) and apo (PDB: ID 1E7A) HSA structures, the experimental results were corroborated by molecular docking simulation. The abnormal spectroscopic behaviour of PMS is related to its binding in different regions in the protein. The movement of PMS into the protein can be traced by alteration in the spectroscopic signals. These findings bring a new point of view about the use of fluorescence quenching to characterize the interaction between albumin and ligands.
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Affiliation(s)
- Luiza de Carvalho Bertozo
- Department of Chemistry, Faculty of Sciences, UNESP - São Paulo State University, 17033-360 Bauru, SP, Brazil
| | - Eric Allison Philot
- Laboratory of Computational Biology and Bioinformatics, UFABC - Federal University of ABC, 09210-580 Santo André, SP, Brazil
| | - Angélica Nakagawa Lima
- Laboratory of Computational Biology and Bioinformatics, UFABC - Federal University of ABC, 09210-580 Santo André, SP, Brazil
| | - Pedro Túlio de Resende Lara
- Laboratory of Computational Biology and Bioinformatics, UFABC - Federal University of ABC, 09210-580 Santo André, SP, Brazil
| | - Ana Lígia Scott
- Laboratory of Computational Biology and Bioinformatics, UFABC - Federal University of ABC, 09210-580 Santo André, SP, Brazil
| | - Valdecir Farias Ximenes
- Department of Chemistry, Faculty of Sciences, UNESP - São Paulo State University, 17033-360 Bauru, SP, Brazil.
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42
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Neubert E, Senger-Sander SN, Manzke VS, Busse J, Polo E, Scheidmann SEF, Schön MP, Kruss S, Erpenbeck L. Serum and Serum Albumin Inhibit in vitro Formation of Neutrophil Extracellular Traps (NETs). Front Immunol 2019; 10:12. [PMID: 30733715 PMCID: PMC6354573 DOI: 10.3389/fimmu.2019.00012] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 01/04/2019] [Indexed: 01/06/2023] Open
Abstract
The formation of neutrophil extracellular traps (NETs) is an immune defense mechanism of neutrophilic granulocytes. Moreover, it is also involved in the pathogenesis of autoimmune, inflammatory, and neoplastic diseases. For that reason, the process of NET formation (NETosis) is subject of intense ongoing research. In vitro approaches to quantify NET formation are commonly used and involve neutrophil stimulation with various activators such as phorbol 12-myristate 13-acetate (PMA), lipopolysaccharides (LPS), or calcium ionophores (CaI). However, the experimental conditions of these experiments, particularly the media and media supplements employed by different research groups, vary considerably, rendering comparisons of results difficult. Here, we present the first standardized investigation of the influence of different media supplements on NET formation in vitro. The addition of heat-inactivated (hi) fetal calf serum (FCS), 0.5% human serum albumin (HSA), or 0.5% bovine serum albumin (BSA) efficiently prevented NET formation of human neutrophils following stimulation with LPS and CaI, but not after stimulation with PMA. Thus, serum components such as HSA, BSA and hiFCS (at concentrations typically found in the literature) inhibit NET formation to different degrees, depending on the NETosis inducer used. In contrast, in murine neutrophils, NETosis was inhibited by FCS and BSA, regardless of the inducer employed. This shows that mouse and human neutrophils have different susceptibilities toward the inhibition of NETosis by albumin or serum components. Furthermore, we provide experimental evidence that albumin inhibits NETosis by scavenging activators such as LPS. We also put our results into the context of media supplements most commonly used in NET research. In experiments with human neutrophils, either FCS (0.5–10%), heat-inactivated (hiFCS, 0.1–10%) or human serum albumin (HSA, 0.05–2%) was commonly added to the medium. For murine neutrophils, serum-free medium was used in most cases for stimulation with LPS and CaI, reflecting the different sensitivities of human and murine neutrophils to media supplements. Thus, the choice of media supplements greatly determines the outcome of experiments on NET-formation, which must be taken into account in NETosis research.
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Affiliation(s)
- Elsa Neubert
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany.,Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany
| | - Susanne N Senger-Sander
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany
| | - Veit S Manzke
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany
| | - Julia Busse
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany
| | - Elena Polo
- Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany
| | - Sophie E F Scheidmann
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany
| | - Michael P Schön
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany.,Lower Saxony Institute of Occupational Dermatology, University Medical Center Göttingen and University of Osnabrück, Göttingen, Germany
| | - Sebastian Kruss
- Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany
| | - Luise Erpenbeck
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, Germany
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Abstract
Modern chemistry foundations were made in between the 18th and 19th centuries and have been extended in 20th century. R&D towards synthetic chemistry was introduced during the 1960s. Development of new molecular drugs from the herbal plants to synthetic chemistry is the fundamental scientific improvement. About 10-14 years are needed to develop a new molecule with an average cost of more than $800 million. Pharmaceutical industries spend the highest percentage of revenues, but the achievement of desired molecular entities into the market is not increasing proportionately. As a result, an approximate of 0.01% of new molecular entities are approved by the FDA. The highest failure rate is due to inadequate efficacy exhibited in Phase II of the drug discovery and development stage. Innovative technologies such as combinatorial chemistry, DNA sequencing, high-throughput screening, bioinformatics, computational drug design, and computer modeling are now utilized in the drug discovery. These technologies can accelerate the success rates in introducing new molecular entities into the market.
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44
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Yin Q, Tang L, Cai K, Yang X, Yin L, Zhang Y, Dobrucki LW, Helferich WG, Fan TM, Cheng J. Albumin as a "Trojan Horse" for polymeric nanoconjugate transendothelial transport across tumor vasculatures for improved cancer targeting. Biomater Sci 2018; 6:1189-1200. [PMID: 29570190 DOI: 10.1039/c8bm00149a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although polymeric nanoconjugates (NCs) hold great promise for the treatment of cancer patients, their clinical utility has been hindered by the lack of efficient delivery of therapeutics to targeted tumor sites. Here, we describe an albumin-functionalized polymeric NC (Alb-NC) capable of crossing the endothelium barrier through a caveolae-mediated transcytosis pathway to better target cancer. The Alb-NC is prepared by nanoprecipitation of doxorubicin (Doxo) conjugates of poly(phenyl O-carboxyanhydrides) bearing aromatic albumin-binding domains followed by subsequent surface decoration of albumin. The administration of Alb-NCs into mice bearing MCF-7 human breast cancer xenografts with limited tumor vascular permeability resulted in markedly increased tumor accumulation and anti-tumor efficacy compared to their conventional counterpart PEGylated NCs (PEG-NCs). The Alb-NC provides a simple, low-cost and broadly applicable strategy to improve the cancer targeting efficiency and therapeutic effectiveness of polymeric nanomedicine.
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Affiliation(s)
- Qian Yin
- Department of Materials Sciences and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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45
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Marković OS, Cvijetić IN, Zlatović MV, Opsenica IM, Konstantinović JM, Terzić Jovanović NV, Šolaja BA, Verbić TŽ. Human serum albumin binding of certain antimalarials. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 192:128-139. [PMID: 29128746 DOI: 10.1016/j.saa.2017.10.061] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 10/09/2017] [Accepted: 10/23/2017] [Indexed: 06/07/2023]
Abstract
Interactions between eight in-house synthesized aminoquinolines, along with well-known chloroquine, and human serum albumin (HSA) have been studied by fluorescence spectroscopy. The synthesized aminoquinolines, despite being structurally diverse, were found to be very potent antimalarials. Fluorescence measurements indicate that three compounds having additional thiophene or benzothiophene substructure bind more strongly to HSA than other studied compounds. Competitive binding experiments indicate that these three compounds bind significantly stronger to warfarin compared to diazepam binding site. Fluorescence quenching at three temperatures (20, 25, and 37°C) was analyzed using classical Stern-Volmer equation, and a static quenching mechanism was proposed. The enthalpy and entropy changes upon sulphur-containing compound-HSA interactions were calculated using Van't Hoff equation. Positive values of enthalpy and entropy changes indicate that non-specific, hydrophobic interactions are the main contributors to HSA-compound interaction. Molecular docking and calculated lipophilicity descriptors indicate the same, pointing out that the increased lipophilicity of sulphur-containing compounds might be a reason for their better binding to HSA. Obtained results might contribute to design of novel derivatives with improved pharmacokinetic properties and drug efficacy.
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Affiliation(s)
- Olivera S Marković
- Department of Chemistry-IChTM, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia.
| | - Ilija N Cvijetić
- Innovation Center of the Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia.
| | - Mario V Zlatović
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia.
| | - Igor M Opsenica
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia.
| | | | | | - Bogdan A Šolaja
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia; Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia.
| | - Tatjana Ž Verbić
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia.
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46
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Deiana M, Mettra B, Mazur LM, Andraud C, Samoc M, Monnereau C, Matczyszyn K. Two-Photon Macromolecular Probe Based on a Quadrupolar Anthracenyl Scaffold for Sensitive Recognition of Serum Proteins under Simulated Physiological Conditions. ACS OMEGA 2017; 2:5715-5725. [PMID: 30023750 PMCID: PMC6045344 DOI: 10.1021/acsomega.7b00665] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 06/28/2017] [Indexed: 05/13/2023]
Abstract
The binding interaction of a biocompatible water-soluble polycationic two-photon fluorophore (Ant-PIm) toward human serum albumin (HSA) was thoroughly investigated under simulated physiological conditions using a combination of steady-state, time-resolved, and two-photon excited fluorescence techniques. The emission properties of both Ant-PIm and the fluorescent amino acid residues in HSA undergo remarkable changes upon complexation allowing the thermodynamic profile associated with Ant-PIm-HSA complexation to be accurately established. The marked increase in Ant-PIm fluorescence intensity and quantum yield in the proteinous environment seems to be the outcome of the attenuation of radiationless decay pathways resulting from motional restriction imposed on the fluorophore. Fluorescence resonance energy transfer and site-marker competitive experiments provide conclusive evidence that the binding of Ant-PIm preferentially occurs within the subdomain IIA. The pronounced hypsochromic effect and increased fluorescence enhancement upon association with HSA, compared to that of bovine serum albumin (BSA) and other biological interferents, makes the polymeric Ant-PIm probe a valuable sensing agent in rather complex biological environments, allowing facile discrimination between the closely related HSA and BSA. Furthermore, the strong two-photon absorption (TPA) with a maximum located at 820 nm along with a TPA cross section σ2 > 800 GM, and the marked changes in the position and intensity of the band upon complexation definitely make Ant-PIm a promising probe for two-photon excited fluorescence-based discrimination of HSA from BSA.
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Affiliation(s)
- Marco Deiana
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Bastien Mettra
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
| | - Leszek M. Mazur
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Chantal Andraud
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
| | - Marek Samoc
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Cyrille Monnereau
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
| | - Katarzyna Matczyszyn
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
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47
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Sekar G, Haldar M, Thirumal Kumar D, George Priya Doss C, Mukherjee A, Chandrasekaran N. Exploring the interaction between iron oxide nanoparticles (IONPs) and Human serum albumin (HSA): Spectroscopic and docking studies. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.06.093] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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48
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Chechłacz M, Korytowska N. ZWIĄZKI WIĄŻĄCE SIĘ Z BIAŁKAMI OSOCZA U LUDZI. ZNACZENIE W TERAPII ORAZ METODY OZNACZANIA WOLNEJ FRAKCJI. PROSPECTS IN PHARMACEUTICAL SCIENCES 2017. [DOI: 10.56782/pps.76] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Wiele substancji endogennych oraz egzogennych wykazuje zdolność do wiązania się z białkami osocza, głównie z ludzką albuminą surowicy oraz α-1-kwaśną glikoproteiną. Substancje te w krwioobiegu występują zarówno w formie wolnej jak i związanej z białkami. Białko posiada na swojej powierzchni miejsca wiązania charakterystyczne dla danego związku, różniące się wielkością, kształtem oraz powinowactwem. Wiązanie z białkami następuje w wyniku oddziaływań hydrofobowych, van der Waalsa oraz elektrostatycznych. Stopień związania z białkami osocza zależy od m.in. obecności stanu zapalnego, występowania chorób nerek i wątroby oraz wieku. Jedynie forma wolna związku jest aktywna biologicznie oraz jest zdolna do pokonywania barier biologicznych. W związku z tym duże znaczenie mają metody pomiaru stężenia frakcji niezwiązanej z białkami w osoczu. Najczęściej stosowana jest dializa równowagowa, uznawana za metodę referencyjną. Inne metody to m.in. ultrafiltracja, ultrawirowanie, mikrodializa, mikroekstrakcja, wysokosprawna analiza czołowa oraz ekstrakcja w punkcie zmętnienia.
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49
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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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50
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Mukhi P, Mohapatra SS, Bhattacharjee M, Ray KK, Muraleedharan TS, Arun A, Sathyavathi R, Juluri RR, Satyam PV, Panda AK, Biswas A, Nayak S, Bojja S, Pratihar S, Roy S. Mercury based drug in ancient India: The red sulfide of mercury in nanoscale. J Ayurveda Integr Med 2017; 8:93-98. [PMID: 28600164 PMCID: PMC5497007 DOI: 10.1016/j.jaim.2017.01.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/24/2017] [Accepted: 01/27/2017] [Indexed: 11/26/2022] Open
Abstract
Mercury is one of the elements which had attracted the attention of the chemists and physicians of ancient India and China. Among the various metal based drugs which utilize mercury, we became interested in the red sulfide of mercury which is known in ancient Indian literature as rasasindur (alias rasasindura, rasasindoor, rasasinduram, sindur, or sindoor) and is used extensively in various ailments and diseases. Following various physico-chemical characterizations it is concluded that rasasindur is chemically pure α-HgS with Hg:S ratio as 1:1. Analysis of rasasindur vide Transmission Electron Microscopy (TEM) showed that the particles are in nanoscale. Bio-chemical studies of rasasindur were also demonstrated. It interacts with Bovine Serum Albumin (BSA) with an association constant of (9.76 ± 0.56) × 103 M−1 and behaves as a protease inhibitor by inhibiting the proteolysis of BSA by trypsin. It also showed mild antioxidant properties.
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Affiliation(s)
- Priyabrata Mukhi
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India
| | | | - M Bhattacharjee
- Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
| | - K K Ray
- Metallurgical & Materials Engineering Department, Indian Institute of Technology, Kharagpur 721302, India
| | | | - A Arun
- Arya Vaidya Sala, Kottakkal 676503, Kerala, India
| | - R Sathyavathi
- School of Physics, University of Hyderabad, Hyderabad 500046, India
| | - R R Juluri
- Institute of Physics, Bhubaneswar 751005, India
| | - P V Satyam
- Institute of Physics, Bhubaneswar 751005, India
| | - Alok K Panda
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India
| | - Ashis Biswas
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India
| | - S Nayak
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India
| | | | - S Pratihar
- Department of Chemical Sciences, Tezpur University, 784028, India
| | - Sujit Roy
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India.
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