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Rehman F, Abubakar M, Ridzwan NFW, Mohamad SB, Abd Halim AA, Tayyab S. Deciphering the binding mode and structural perturbations in floxuridine-human serum albumin complexation with spectroscopic, microscopic, and computational techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123641. [PMID: 38061108 DOI: 10.1016/j.saa.2023.123641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/29/2023] [Accepted: 11/10/2023] [Indexed: 01/13/2024]
Abstract
The binding mode of antineoplastic antimetabolite, floxuridine (FUDR), with human serum albumin (HSA), the leading carrier in blood circulation, was ascertained using multi-spectroscopic, microscopic, and computational techniques. A static fluorescence quenching was established due to decreased Ksv values with rising temperatures, suggesting FUDR-HSA complexation. UV-vis absorption spectral results also supported this conclusion. The binding constant, Ka values, were found within 9.7-7.9 × 103 M-1 at 290, 300, and 310 K, demonstrating a moderate binding affinity for the FUDR-HSA system. Thermodynamic data (ΔS = +46.35 J.mol-1.K-1 and ΔH = -8.77 kJ.mol-1) predicted the nature of stabilizing forces (hydrogen-bonds, hydrophobic, and van der Waals interactions) for the FUDR-HSA complex. Circular dichroism spectra displayed a minor disruption in the protein's 2° and 3° structures. At the same time, atomic force microscopy images proved variations in the FUDR-HSA surface morphology, confirming its complex formation. The protein's microenvironment around Trp/Tyr residues was also modified, as judged by 3-D fluorescence spectra. FUDR-bound HSA showed better resistance against thermal stress. As disclosed from ligand displacement studies, the FUDR binding site was placed in subdomain IIA (Site I). Further, the molecular docking analysis corroborated the competing displacement studies. Molecular dynamics evaluations revealed that the complex achieved equilibrium during simulations, confirming the FUDR-HSA complex's stability.
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Affiliation(s)
- Fazal Rehman
- Biochemistry Program, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Malaysia
| | - Mujaheed Abubakar
- Biochemistry Program, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Malaysia
| | - Nor Farrah Wahidah Ridzwan
- Bioinformatics Program, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Malaysia
| | - Saharuddin B Mohamad
- Bioinformatics Program, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Malaysia.
| | - Adyani Azizah Abd Halim
- Department of Oral and Craniofacial Sciences, Faculty of Dentistry, Universiti Malaya, Malaysia
| | - Saad Tayyab
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur, Malaysia.
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Karami E, Mesbahi Moghaddam M, Kazemi-Lomedasht F. Use of Albumin for Drug Delivery as a Diagnostic and Therapeutic Tool. Curr Pharm Biotechnol 2024; 25:676-693. [PMID: 37550918 DOI: 10.2174/1389201024666230807161200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/19/2023] [Accepted: 06/26/2023] [Indexed: 08/09/2023]
Abstract
Drug delivery is an important topic that has attracted the attention of researchers in recent years. Albumin nanoparticles play a significant role in drug delivery as a carrier due to their unique characteristics. Albumin is non-toxic, biocompatible, and biodegradable. Its structure is such that it can interact with different drugs, which makes the treatment of the disease faster and also reduces the side effects of the drug. Albumin nanoparticles can be used in the diagnosis and treatment of many diseases, including cancer, diabetes, Alzheimer's, etc. These nanoparticles can connect to some compounds, such as metal nanoparticles, antibodies, folate, etc. and create a powerful nanostructure for drug delivery. In this paper, we aim to investigate albumin nanoparticles in carrier format for drug delivery application. In the beginning, different types of albumin and their preparation methods were discussed, and then albumin nanoparticles were discussed in detail in diagnosing and treating various diseases.
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Affiliation(s)
- Elmira Karami
- Venom and Biotherapeutics Molecules Laboratory, Department of Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | | | - Fatemeh Kazemi-Lomedasht
- Venom and Biotherapeutics Molecules Laboratory, Department of Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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Duay SS, Yap RCY, Gaitano AL, Santos JAA, Macalino SJY. Roles of Virtual Screening and Molecular Dynamics Simulations in Discovering and Understanding Antimalarial Drugs. Int J Mol Sci 2023; 24:ijms24119289. [PMID: 37298256 DOI: 10.3390/ijms24119289] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/16/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Malaria continues to be a global health threat, with approximately 247 million cases worldwide. Despite therapeutic interventions being available, patient compliance is a problem due to the length of treatment. Moreover, drug-resistant strains have emerged over the years, necessitating urgent identification of novel and more potent treatments. Given that traditional drug discovery often requires a great deal of time and resources, most drug discovery efforts now use computational methods. In silico techniques such as quantitative structure-activity relationship (QSAR), docking, and molecular dynamics (MD) can be used to study protein-ligand interactions and determine the potency and safety profile of a set of candidate compounds to help prioritize those tested using assays and animal models. This paper provides an overview of antimalarial drug discovery and the application of computational methods in identifying candidate inhibitors and elucidating their potential mechanisms of action. We conclude with the continued challenges and future perspectives in the field of antimalarial drug discovery.
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Affiliation(s)
- Searle S Duay
- Department of Chemistry, De La Salle University, Manila 0922, Philippines
| | - Rianne Casey Y Yap
- Department of Chemistry, De La Salle University, Manila 0922, Philippines
| | - Arturo L Gaitano
- Chemistry Department, Adamson University, Manila 1000, Philippines
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Mohapatra P, Chandrasekaran N. Effects of black cumin-based antimalarial drug loaded with nano-emulsion of bovine and human serum albumins by spectroscopic and molecular docking studies. Heliyon 2023; 9:e12677. [PMID: 36632107 PMCID: PMC9826829 DOI: 10.1016/j.heliyon.2022.e12677] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/15/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023] Open
Abstract
The growing understanding of nanoemulsion biomedical applications necessitates a basic understanding of protein-drug-loaded nanoemulsion interaction. In our present study, we investigated the binding interactions of Mefloquine (MEF)-loaded black cumin seed oil (Thymoquinone) nanoemulsion of different concentrations towards human and bovine serum albumin (HSA&BSA).Fluorescenceemission,three-dimensionalspectra,UV-visible spectroscopy, and FTIR-spectroscopy, techniques were used together with molecular docking studies to identify the binding effects. The ground state complex formation between Mefloquine-loaded black cumin seed oil nanoemulsion and protein fluorophores was confirmed by a decrease in fluorescence intensity and disputed hyper-chronicity found in the UV-visible spectra of albumins. According to three-dimensional fluorescence spectral analysis, the addition of MEF in thymoquinone impacted the microenvironment around aromatic amino acid (tryptophan and tyrosine) residues in HSA. The quenching mechanism is determined to be static contact by stern-volmer analysis, resulting in the formation of a stable bioconjugate. Significant modifications in the amide FTIR frequencies at around 1600 cm-1 correlate to variations in the secondary alpha-helical structures of biomolecules at the MEF-loaded nanoemulsion interface. Molecular dynamic studies have shown the binding affinity scores of the proteins BSA and HSA with the drug, MEF-loaded black cumin seed oil nanoemulsion. The determined thermodynamic parameters were found to agree with molecular docking data, indicating that vander-waals and hydrogen bonding forces were important in the interaction process. MEF prefers a highly polar binding site at the exterior area of domains in HSA than BSA, as shown in the molecular model, and the hydrogen bonds are highlighted. From our results, we have observed that drug delivery has a detrimental effect on protein frame confirmation by altering its physiological function.
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Affiliation(s)
| | - Natarajan Chandrasekaran
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore 632014, India
- Corresponding author.
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Azeem K, Ahmed M, Mohammad T, Uddin A, Shamsi A, Hassan MI, Singh S, Patel R, Abid M. A multi-spectroscopic and computational simulations study to delineate the interaction between antimalarial drug hydroxychloroquine and human serum albumin. J Biomol Struct Dyn 2022:1-17. [PMID: 35924780 DOI: 10.1080/07391102.2022.2107077] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Hydroxychloroquine (HCQ), a quinoline based medicine is commonly used to treat malaria and autoimmune diseases such as rheumatoid arthritis. Since, human serum albumin (HSA) serves as excipient for vaccines or therapeutic protein drugs, it is important to understand the effect of HCQ on the structural stability of HSA. In this study, the binding mechanism of HCQ and their effect on stability of HSA have been studied using various spectroscopic techniques and molecular dynamic simulation. The UV-VIS results confirmed the strong binding of HCQ with HSA. The calculated thermodynamics parameters confirmed that binding is spontaneous in nature and van der Waals forces and hydrogen bonding are involved in the binding system which is also confirmed by molecular docking results. The steady-state fluorescence confirms the static quenching mechanism in the interaction system, which was further validated by time-resolved fluorescence. The synchronous fluorescence confirmed the more abrupt binding of HCQ with tryptophan residue of HSA compared to Tyr residue of HSA. Isothermal titration calorimetry (ITC) was done to validate the thermodynamics parameters of HSA-HCQ complex in one experiment, supporting the values obtained from the spectroscopic techniques. The circular dichroism (CD) demonstrated that the HCQ affected the secondary structure of HSA protein by reducing their α-helical content. The docking and molecular dynamic simulation results further helped in understanding the effect of HCQ on conformational changes of HSA. Overall, present work defined the physicochemical properties and interaction mechanism of HCQ with HSA that have extensively been elucidated by both in vitro and in silico approaches.
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Affiliation(s)
- Kashish Azeem
- Department of Biosciences, Medicinal Chemistry Laboratory, New Delhi, India.,Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Mofieed Ahmed
- Department of Biosciences, Medicinal Chemistry Laboratory, New Delhi, India.,Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Taj Mohammad
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Amad Uddin
- Department of Biosciences, Medicinal Chemistry Laboratory, New Delhi, India.,Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
| | - Anas Shamsi
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Shailja Singh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
| | - Rajan Patel
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Mohammad Abid
- Department of Biosciences, Medicinal Chemistry Laboratory, New Delhi, India
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Li N, Yang X, Chen F, Zeng G, Zhou L, Li X, Tuo X. Spectroscopic and in silico insight into the interaction between dicofol and human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120277. [PMID: 34455384 DOI: 10.1016/j.saa.2021.120277] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/20/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
Dicofol, a broad-spectrum acaricide, has garnered considerable attention because of the potential harm to the environment and various organisms. Herein, this study applied spectroscopic and in silico methods to understand the interaction between human serum albumin (HSA) and dicofol. Fluorescence experiments demonstrated that dicofol formed a stable complex and the binding process occurred in Suldow's site I of HSA. Its binding constant was 2.26 × 105 M-1 at 298 K. Van der Waals forces and hydrogen bond were primarily facilitated the interaction between dicofol and HSA (ΔH < 0, ΔS < 0) according to thermodynamic experiments. Additionally, 3D fluorescence and circular dichroism (CD) spectra revealed a few conformational changes in HSA due to dicofol. Molecular docking analysis indicated that dicofol interacted with Ser192, Gln196, Leu481, Arg218, Leu238, and Phe211 via van der Waals forces and formed a hydrogen bond with His242. Molecular dynamics (MD) simulation showed that Lys195 and Arg218 residues contributed greater energy for forming the HSA-dicofol complex. MD simulation analysis also showed that dicofol can affect the HSA structure with a reduction in α-helix. This research is desired to facilitate a new perspective on the toxicity mechanism of dicofol in the human body.
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Affiliation(s)
- Na Li
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Xi Yang
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Fengping Chen
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Guofang Zeng
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Like Zhou
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Xiaoke Li
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Xun Tuo
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China.
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He W, Du Y, Li C, Wang J, Wang Y, Dogovski C, Hu R, Tao Z, Yao C, Li X. Dimeric artesunate-choline conjugate micelles coated with hyaluronic acid as a stable, safe and potent alternative anti-malarial injection of artesunate. Int J Pharm 2021; 609:121138. [PMID: 34592395 DOI: 10.1016/j.ijpharm.2021.121138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 12/23/2022]
Abstract
Artesunate (ARS) is the only artemisinin-based intravenous drug approved for treatment of malaria in the clinic. ARS is rapidly metabolized in vivo to short lived (∼30-45 min) but fast acting, dihydroartemisinin (DHA). The short half-life of DHA necessitates multiple dose administration to circumvent the risk of recrudescence and development of artemisinin resistance. In this work, we report a stable, safe and potent alternative artemisinin-based injectable nanocomplex consisting of dimeric artesunate-choline conjugate (dACC) micelles coated with hyaluronic acid (HA). Firstly, dACC was synthesized by one-step esterification of two artesunate molecules with 3-(dimethylamino)-1,2-propanediol followed by quaternization. After that, dACC was self-assembled into cationic nanomicelles and further coated with anionic small molecular weight HA. The HA-coated dACC nanocomplex (dACC/HA nanocomplex) has a narrow size distribution of about 30 nm. Hemolytic toxicity and cytotoxicity studies revealed a favorable bio-safety profile. Finally, in vitro and in vivo studies showed the dACC/HA nanocomplex possess superior safety and antimalarial efficacy compared to ARS. Taken together, the dACC/HA nanocomplex is a promising injectable alternative to the traditional clinically used artesunate.
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Affiliation(s)
- Wei He
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yawei Du
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Chuncao Li
- Department of Microbiology and Parasitology, Anhui Provincial Key Laboratory of Infection and Immunology, Bengbu Medical College, Bengbu 233030, China
| | - Ji Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yang Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Con Dogovski
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Rui Hu
- Department of Microbiology and Parasitology, Anhui Provincial Key Laboratory of Infection and Immunology, Bengbu Medical College, Bengbu 233030, China
| | - Zhiyong Tao
- Department of Microbiology and Parasitology, Anhui Provincial Key Laboratory of Infection and Immunology, Bengbu Medical College, Bengbu 233030, China
| | - Chen Yao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Xinsong Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
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