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Ayimbila F, Tantimongcolwat T, Ruankham W, Pingaew R, Prachayasittikul V, Worachartcheewan A, Prachayasittikul V, Prachayasittikul S, Phopin K. Insight into the binding mechanisms of fluorinated 2-aminothiazole sulfonamide and human serum albumin: Spectroscopic and in silico approaches. Int J Biol Macromol 2024:134048. [PMID: 39116983 DOI: 10.1016/j.ijbiomac.2024.134048] [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: 05/14/2024] [Revised: 07/17/2024] [Accepted: 07/18/2024] [Indexed: 08/10/2024]
Abstract
4-Fluoro-N-(thiazol-2-yl)benzenesulfonamide (3) is a novel fluorinated compound, containing various biological activities. Therefore, absorption spectroscopy, fluorescence quenching, molecular docking, and molecular simulation were employed to investigate the interaction between 3 and HSA. Firstly, compound 3 meets all criteria for drug-likeness prediction. UV absorption spectra revealed the interaction of 3 with HSA altered the microenvironment of protein, as well as circular dichroism spectroscopic analysis indicated slightly conformational changes and a reduction in α-helical content. The binding parameters of the HSA-3 complex suggested that fluorescence quenching is driven by combined static and dynamic processes. Additionally, the stability of the complex is attributed to conventional hydrogen and hydrophobic bonding interactions. Furthermore, esterase-like activity indicated that the binding of 3 might disrupt HSA's bond networks, leading to structural alterations. Consequently, the strong binding constant (Ka ≈ 1.204 × 106 M-1) aligns with the predicted unbound fraction (0.28) in serum, indicating that thiazole 3 has good bioavailability in plasma and can be effectively transported to target sites, thereby exerting its pharmaceutical effects. However, careful dosage management is essential to prevent potential adverse effects. Overall, these findings highlight the potential of 3 as a therapeutic agent, emphasizing the need for further research to optimize its uses.
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Affiliation(s)
- Francis Ayimbila
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Tanawut Tantimongcolwat
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Waralee Ruankham
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Ratchanok Pingaew
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand
| | - Veda Prachayasittikul
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Apilak Worachartcheewan
- Department of Community Medical Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Virapong Prachayasittikul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Supaluk Prachayasittikul
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Kamonrat Phopin
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand; Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand.
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2
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Duan X, Liu W, Liang J, Jing T, Liu Y, Wang X, Liu B. Modulation of protein-ligand interactions in the presence of ZIF-8: Spectroscopy and molecular dynamics simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 312:124053. [PMID: 38422930 DOI: 10.1016/j.saa.2024.124053] [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: 07/23/2023] [Revised: 12/17/2023] [Accepted: 02/17/2024] [Indexed: 03/02/2024]
Abstract
In this paper, we investigated the protein-ligand interactions in the presence of ZIF-8 using multi-spectroscopic approaches and molecular dynamics simulation. Fluorescence experiments and molecular docking results showed that ZIF-8 did not change the type of quenching and interaction force between ciprofloxacin (CIP) and human serum albumin (HSA), but made the binding constant of HSA-CIP to be smaller, suggesting that ZIF-8 maybe accelerate the dissociation of CIP from HSA-CIP complex. Moreover, the effect of ZIF-8 on the physiological function of HSA was explored. Multi-spectroscopic methods revealed that ZIF-8 did not significantly alter the microenvironment of amino acid groups, but cause a slight decrease in the content of α-helical conformation, and a sparse and flexible structure of the protein backbone. These peculiarities might lead to the diminution of HSA's ability to control drugs. In short, ZIF-8 might enhance drug effect due to affecting the binding of drugs to proteins. However, the present study is only a preliminary investigation of the suitability of ZIF-8 as a drug carrier in vitro, and subsequent in vivo experimental studies will be required to further confirm the idea.
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Affiliation(s)
- Xinyue Duan
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Wei Liu
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Jiaqi Liang
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Tingyu Jing
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Yu Liu
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Xiao Wang
- Department of Gastroenterology, Central Hospital Affiliated to Shenyang Medical College, Shenyang 110075, China.
| | - Bin Liu
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China.
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3
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Yang Y, Han W, Zhang H, Qiao H, Zhang Y, Zhang Z, Wang J. Insights into interaction of triazine herbicides with three kinds of different alkyl groups (simetryne, ametryn and terbutryn) with human serum albumin via multi-spectral analysis. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 201:105895. [PMID: 38685222 DOI: 10.1016/j.pestbp.2024.105895] [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: 02/06/2024] [Revised: 03/26/2024] [Accepted: 04/01/2024] [Indexed: 05/02/2024]
Abstract
In this study, the interaction of triazine herbicides with three kinds of different alkyl groups (simetryne, ametryn and terbutryn) with human serum albumin (HSA) are investigated through UV-vis, fluorescence, and circular dichroism (CD) spectra. The mechanisms on the fluorescence quenching of HSA initiated by triazine herbicides are obtained using Stern-Volmer, Lineweaver-Burk and Double logarithm equations. The quenching rate constant (Kq), Stern-Volmer quenching constant (Ksv), binding constant (KA), thermodynamic parameters such as enthalpy change (∆H), entropy change (∆S) and Gibbs free energy (∆G) and number of binding site (n) are calculated and compared. The variations in the microenvironment of amino acid residues are studied by synchronous fluorescence spectroscopy. The binding sites and subdomains are identified using warfarin and ibuprofen as site probes. The conformational changes of HSA are measured using CD spectra. The results reveal that the triazine herbicides with different alkyl groups can interact with HSA by static quenching. The combination of the three herbicides and HSA are equally proportional, and the binding processes are spontaneous. Hydrophobic interaction forces play important roles in simetryne-HSA and ametryn-HSA, while the interaction of terbutryn-HSA is Van der Waals forces and hydrogen bonding. Moreover, the three herbicides can bind to HSA at site I (sub-domain IIA) more than site II (subdomain IIIA), and combine with tryptophan (Trp) more easily than tyrosine (Tyr) residues, respectively. By comparison, the order of interaction strength is terbutryn-HSA > ametryn-HSA > simetryne-HSA. Terbutryn can destroy the secondary structure of HSA more than simetryne and ametryn, and the potential toxicity of terbutryn is higher. It is expected that the interactions of triazine herbicides with HSA via multi-spectral analysis can offer some valuable information for studying the toxicity and the harm of triazine herbicides on human health at molecular level in life science.
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Affiliation(s)
- Ying Yang
- School of Environment, Liaoning University, Shenyang 110036, China
| | - Wenhui Han
- School of Environment, Liaoning University, Shenyang 110036, China
| | - Honglu Zhang
- School of Environment, Liaoning University, Shenyang 110036, China
| | - Heng Qiao
- Qingdao ECH Testing Limited Company, Qingdao 266109, China
| | - Yongcai Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Zhaohong Zhang
- School of Environment, Liaoning University, Shenyang 110036, China.
| | - Jun Wang
- School of Chemistry, Liaoning University, Shenyang 110036, PR China.
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4
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Saletti M, Paolino M, Venditti J, Bonechi C, Giuliani G, Lamponi S, Tassone G, Boccia A, Botta C, Blancafort L, Poggialini F, Vagaggini C, Cappelli A. A Facile Access to Green Fluorescent Albumin Derivatives. Chembiochem 2024; 25:e202300862. [PMID: 38369609 DOI: 10.1002/cbic.202300862] [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] [Received: 02/24/2024] [Revised: 01/24/2024] [Accepted: 12/22/2023] [Indexed: 02/20/2024]
Abstract
A Morita-Baylis-Hillman Adduct (MBHA) derivative bearing a triphenylamine moiety was found to react with human serum albumin (HSA) shifting its emission from the blue to the green-yellow thus leading to green fluorescent albumin (GFA) derivatives and enlarging the platform of probes for aggregation-induced fluorescent-based detection techniques. A possible interaction of MBHA derivative 7 with a lipophilic pocket within the HSA structure was suggested by docking studies. DLS experiments showed that the reaction with HSA induce a conformational change of the protein contributing to the aggregation process of GFA derivatives. The results of investigations on the biological properties suggested that GFA retained the ability of binding drug molecules such as warfarin and diazepam. Finally, cytotoxicity evaluation studies suggested that, although the MBHA derivative 7 at 0.1 μg/mL affected the percentage of cell viability in comparison to the negative control, it cannot be considered cytotoxic, whereas at all the other concentrations≥0.5 μg/mL resulted cytotoxic at different extent.
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Affiliation(s)
- Mario Saletti
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Marco Paolino
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Jacopo Venditti
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Claudia Bonechi
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Germano Giuliani
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Stefania Lamponi
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Giusy Tassone
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Antonella Boccia
- Istituto di Scienze e Tecnologie Chimiche "G. Natta" - SCITEC (CNR), Via A. Corti 12, 20133, Milano, Italy
| | - Chiara Botta
- Istituto di Scienze e Tecnologie Chimiche "G. Natta" - SCITEC (CNR), Via A. Corti 12, 20133, Milano, Italy
| | - Lluís Blancafort
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, C/M. A. Capmany 69, 17003, Girona, Spain
| | - Federica Poggialini
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Chiara Vagaggini
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Andrea Cappelli
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
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5
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Lin C, Du H. Interactions between forsythoside E and two cholinesterases at the different conditions: fluorescence sections. Methods Appl Fluoresc 2024; 12:025003. [PMID: 38428023 DOI: 10.1088/2050-6120/ad2f3a] [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: 09/26/2023] [Accepted: 03/01/2024] [Indexed: 03/03/2024]
Abstract
Forsythoside E is one secondary metabolite ofForsythia suspensa(Thunb.) Vahl. In the study, the interactions between forsythoside E and two types of cholinesterases, acetylcholinesterase and butyrylcholinesterase were investigated in the different conditions. Forsythoside E increased the fluorescence intensity of acetylcholinesterase but quenched the fluorescence of butyrylcholinesterase. Aβ25-35used in the study may not form complexes with cholinesterases, and did not affect the interaction between forsythoside E and cholinesterases. The charged quaternary group of AsCh interacted with the 'anionic' subsite in acetylcholinesterase, which did not affect the interaction between forsythoside E and acetylcholinesterase. The enhancement rate of forsythoside E to acetylcholinesterase fluorescence from high to low was acid solution (pH 6.4), neutral solution (pH 7.4) and alkaline solution (pH 8.0), while the reduction rate of forsythoside E to butyrylcholinesterase fluorescence was in reverse order. Metal ions may interact with cholinesterases, and increased the effects of forsythoside E to cholinesterases fluorescence, in order that Fe3+was the highest, followed by Cu2+, and Mg2+. A forsythoside E-butyrylcholinesterase complex at stoichiometric ratio of 1:1 was spontaneously formed, and the static quenching was the main quenching mode in the process of forsythoside E binding with butyrylcholinesterase. TheKvalues of two complexes were pretty much the same, suggesting that the interaction between cholinesterases and forsythoside E was almost unaffected by acid-base environment and metal ions. Thennumbers of two cholinesterases approximately equaled to one, indicating that there was only one site on each cholinesterase applicable for forsythoside E to bind to.
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Affiliation(s)
- Conghuan Lin
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, People's Republic of China
| | - Huizhi Du
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, People's Republic of China
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6
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Azeem K, Ahmed M, Uddin A, Singh S, Patel R, Abid M. Comparative investigation on interaction between potent antimalarials and human serum albumin using multispectroscopic and computational approaches. LUMINESCENCE 2023; 38:2018-2033. [PMID: 37654050 DOI: 10.1002/bio.4590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/22/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
This study performed a comparative investigation to explore the interaction mechanisms between two potential antimalarial compounds, JMI 346 and JMI 105, and human serum albumin (HSA), a vital carrier protein responsible for maintaining important biological functions. Our aim was to assess the pharmacological efficiency of these compounds while comprehensively analyzing their impact on the dynamic behavior and overall stability of the protein. A comprehensive array of multispectroscopic techniques, including UV-Vis. spectroscopy, steady-state fluorescence analysis, synchronous fluorescence spectroscopy, three-dimensional fluorescence and circular dichroism spectroscopy, docking studies, and molecular dynamics simulations, were performed to probe the intricate details of the interaction between the compounds and HSA. Our results revealed that both JMI 346 and JMI 105 exhibited promising pharmacological effectiveness within the context of malaria therapy. However, JMI 346 was found to exhibit a significantly higher affinity and only minor altered impact on HSA, suggesting a more favorable interaction with the protein on the dynamic behavior and overall stability of the protein in comparison to JMI 105. Further studies can build on these results to optimize the drug-protein interaction and enable the development of more potent and targeted antimalarial treatments.
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Affiliation(s)
- Kashish Azeem
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Mofieed Ahmed
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Amad Uddin
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, 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
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
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7
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Abd Elhaleem SM, Elsebaei F, Shalan S, Belal F. Investigating the Effect of Silver Nanoparticles on the Fluorescence Intensity of Bambuterol and its Active Metabolite Terbutaline Using FRET. J Fluoresc 2023; 33:1717-1725. [PMID: 36826730 PMCID: PMC10539440 DOI: 10.1007/s10895-023-03182-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 02/13/2023] [Indexed: 02/25/2023]
Abstract
Silver nanoparticles (AgNPs) were found to significantly quench the fluorescence of bambuterol hydrochloride (BAM) and its active metabolite terbutaline sulfate (TER). The intrinsic fluorescence intensity of each of BAM (at 264/292 nm) and TER (at 276/306 nm) decreased by the gradual addition of AgNPs. Quenching of the steady state fluorescence of BAM and TER probably resulted from the energy transfer to the photo-excited state of AgNPs. The estimated Stern-Volmer quenching constant at several temperature settings proved that the quenching mechanism of the two drugs was dynamic quenching in case of BAM while it was static quenching in case of TER. The number of binding sites, binding constants, and corresponding thermodynamic parameters depending on the interaction system were estimated at 293, 313, and 333 °K and the results obtained were interpreted.
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Affiliation(s)
- Shymaa M Abd Elhaleem
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
| | - F Elsebaei
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Sh Shalan
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - F Belal
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
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8
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Jiang SL, Hu ZY, Wang WJ, Hu L, Li L, Kou SB, Shi JH. Investigation on the binding behavior of human α1-acid glycoprotein with Janus Kinase inhibitor baricitinib: Multi-spectroscopic and molecular simulation methodologies. Int J Biol Macromol 2023:125096. [PMID: 37285878 DOI: 10.1016/j.ijbiomac.2023.125096] [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: 02/04/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/09/2023]
Abstract
Baricitinib is a Janus Kinase (JAK) inhibitor that is primarily used to treat moderately to severely active rheumatoid arthritis in adults and has recently been reported for the treatment of patients with severe COVID-19. This paper describes the investigation of the binding behavior of baricitinib to human α1-acid glycoprotein (HAG) employing a variety of spectroscopic techniques, molecular docking and dynamics simulations. Baricitinib can quench the fluorescence from amino acids in HAG through a mix of dynamic and static quenching, according to steady-state fluorescence and UV spectra observations, but it is mainly static quenching at low concentration. The binding constant (Kb) of baricitinib to HAG at 298 K was at the level of 104 M-1, indicating a moderate affinity of baricitinib to HAG. Hydrogen bonding and hydrophobic interactions conducted the main effect, according to thermodynamic characteristics, competition studies between ANS and sucrose, and molecular dynamics simulations. For the change in HAG conformation, the results of multiple spectra showed that baricitinib was able to alter the secondary structure of HAG as well as increase the polarity of the microenvironment around the Trp amino acid. Furthermore, the binding behavior of baricitinib to HAG was investigated by molecular docking and molecular dynamics simulations, which validated experimental results. Also explored is the influence of K+, Co2+, Ni2+, Ca2+, Fe3+, Zn2+, Mg2+ and Cu2+plasma on binding affinity.
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Affiliation(s)
- Shao-Liang Jiang
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Zhe-Ying Hu
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Wan-Jun Wang
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Lu Hu
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Li Li
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Song-Bo Kou
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jie-Hua Shi
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China.
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9
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Amir M, Javed S. Elucidation of binding dynamics of tyrosine kinase inhibitor tepotinib, to human serum albumin, using spectroscopic and computational approach. Int J Biol Macromol 2023; 241:124656. [PMID: 37119913 DOI: 10.1016/j.ijbiomac.2023.124656] [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: 02/20/2023] [Revised: 04/07/2023] [Accepted: 04/24/2023] [Indexed: 05/01/2023]
Abstract
Tepotinib (TPT), an anticancer drug, is a fibroblast growth factor receptor inhibitor approved by the FDA for the chemotherapy of urothelial carcinoma. The binding of anticancer medicines to HSA can affect their pharmacokinetics and pharmacodynamics. The absorption, fluorescence emission, circular dichroism, molecular docking, and simulation studies were used to evaluate the binding relationship between TPT and HSA. The absorption spectra exhibited a hyperchromic effect upon the interaction of TPT with HSA. The Stern-Volmer and binding constant of the HSA-TPT complex demonstrates that fluorescence quenching is triggered by a static rather than a dynamic process. Further, the displacement assays and molecular docking results revealed that TPT preferred binding to site III of HSA. Circular dichroism spectroscopy confirmed that TPT binding to HSA induces conformational changes and reduces α-helical content. The thermal CD spectra reveal that tepotinib enhances protein's stability in the temperature range of 20 to 90 °C. The findings of MDS studies provide further evidence for the stability of the HSA-TPT complex. Consequently, the findings of the present investigation provide a clear picture of the impacts of TPT on HSA interaction. These interactions are thought to make the microenvironment around HSA more hydrophobic than in its native state.
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Affiliation(s)
- Mohd Amir
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - Saleem Javed
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India.
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10
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Qureshi MA, Amir M, Khan RH, Musarrat J, Javed S. Glycation reduces the binding dynamics of aflatoxin B 1 to human serum albumin: a comprehensive spectroscopic and computational investigation. J Biomol Struct Dyn 2023; 41:14797-14811. [PMID: 37021366 DOI: 10.1080/07391102.2023.2194000] [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: 01/04/2023] [Accepted: 02/25/2023] [Indexed: 04/07/2023]
Abstract
Aflatoxin B1 (AFB1), a potent mutagen, is synthesized by Aspergillus parasiticus and Aspergillus flavus. Human serum albumin (HSA) is a globular protein with diverse roles. As AFB1 is ingested with food and is transported in the body via blood, it becomes pertinent to comprehend the effect of the binding of this toxin on the structure and conformation of HSA, which may help to get insight into the toxic effect of the exposure of the mycotoxin. In this study, multi-spectroscopic approaches have been used to evaluate the binding efficiency of AFB1 with both the native HSA (nHSA) and the glycated HSA (gHSA). Steady-state fluorescence spectroscopy reveals the static type of fluorescence quenching in the fluorescence emission spectra of nHSA and gHSA in the presence of AFB1. The binding constant (Kb) is calculated to be 6.88 × 104 M-1 for nHSA, while a reduced Kb value of 2.95 × 104 M-1 has been obtained for gHSA. The circular dichroism study confirms the change in the secondary structure of nHSA and gHSA in the presence of AFB1, followed by alterations in the melting temperature (Tm) of nHSA and gHSA. In silico computational findings envisaged the amino acid residues and bonds involved in the binding of nHSA and gHSA with AFB1. The comprehensive study analyzes the binding effectiveness of AFB1 with nHSA and gHSA and shows reduced binding of AFB1 to gHSA.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mohd Aamir Qureshi
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Mohd Amir
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Javed Musarrat
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, India
| | - Saleem Javed
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
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11
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Guo J, Gan C, Cheng B, Cui B, Yi F. Exploration of binding mechanism of apigenin to pepsin: Spectroscopic analysis, molecular docking, enzyme activity and antioxidant assays. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 290:122281. [PMID: 36584639 DOI: 10.1016/j.saa.2022.122281] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 12/07/2022] [Accepted: 12/25/2022] [Indexed: 06/17/2023]
Abstract
Pepsin plays an important role in nutrient metabolism. Apigenin (AP) is a beneficial polyphenol to human health. To enhance the bioavailability of AP and elucidate the inhibitory effect of AP on pepsin, the interaction mechanism of AP with pepsin was investigated using spectroscopic analysis and molecular docking, and the activity of pepsin and antioxidant activity of AP was also evaluated. Specifically, AP performed static quenching of pepsin and had only one binding site on pepsin. More interestingly, the interaction between AP and pepsin was spontaneous, while hydrogen bonds and van der Waals forces were the main binding forces. Generally, synchronous and three-dimensional fluorescence confirmed that AP induced the conformational changes of pepsin, and molecular docking proved the above results and illustrated the specific binding patterns. Specifically, AP inhibited the activity of pepsin, while pepsin decreased the antioxidant activity of AP. These results provided useful information for elucidating the interactions between AP and pepsin.
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Affiliation(s)
- Jinying Guo
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, PR China.
| | - Chuanfa Gan
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, PR China
| | - Bo Cheng
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, PR China
| | - Bo Cui
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, PR China
| | - Fankai Yi
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, PR China
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12
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Shi M, He J, Xu M, Lin X, Liu H, Jiang T, Yi Z. Interactions between polycyclic musks and human lactoferrin: Multi-spectroscopic methods and docking simulation. J Mol Recognit 2023; 36:e3005. [PMID: 36573888 DOI: 10.1002/jmr.3005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/15/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022]
Abstract
Galaxolide (1,3,4,6,7,8-hexahydro-4,6,6,7,8-hexamethylcyclopenta-γ-2-benzopyrane; HHCB) and Tonalide (7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene; AHTN) are "pseudo-persistent" pollutants that can cause DNA damage, endocrine disruption, organ toxicity, and reproductive toxicity in humans. HHCB and AHTN are readily enriched in breast milk, so exposure of infants to HHCB and AHTN is of concern. Here, the molecular mechanisms through which HHCB and AHTN interact with human lactoferrin (HLF) are investigated using computational simulations and spectroscopic methods to identify indirectly how HHCB and AHTN may harm infants. Molecular docking and kinetic simulation studies indicated that HHCB and AHTN can interact with and alter the secondary HLF structure. The fluorescence quenching of HLF by HHCB, AHTN was static with the forming of HLF-HHCB, HLF-AHTN complex, and accompanied by non-radiative energy transfer and that 1:1 complexes form through interaction forces. Time-resolved fluorescence spectroscopy indicated that binding to small molecules does not markedly change the HLF fluorescence lifetime. Three-dimensional fluorescence spectroscopy indicated that HHCB and AHTN alter the peptide chain backbone structure of HLF. Ultraviolet-visible absorption spectroscopy, simultaneous fluorescence spectroscopy, Fourier-transform infrared spectroscopy, and circular dichroism spectroscopy indicated that HHCB and AHTN change the secondary HLF conformation. Antimicrobial activity experiments indicated that polycyclic musks decrease lactoferrin activity and interact with HLF. These results improve our understanding of the mechanisms involved in the toxicities of polycyclic musks bound to HLF at the molecular level and provide theoretical support for mother-and-child health risk assessments.
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Affiliation(s)
- Mengjie Shi
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, People's Republic of China
| | - Jinfeng He
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, People's Republic of China
| | - Minhua Xu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, People's Republic of China
| | - Xiaolian Lin
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, People's Republic of China
| | - Hongyan Liu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, People's Republic of China.,South Asia Branch of National Engineering Center of Dairy for Maternal and Child Health, Guilin University of Technology, Guilin, People's Republic of China
| | - Tiemin Jiang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, People's Republic of China.,South Asia Branch of National Engineering Center of Dairy for Maternal and Child Health, Guilin University of Technology, Guilin, People's Republic of China
| | - Zhongsheng Yi
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, People's Republic of China
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Rajan D, Rajamanikandan R, Ilanchelian M. Investigating the biophysical interaction of serum albumins-gold nanorods using hybrid spectroscopic and computational approaches with the intent of enhancing cytotoxicity efficiency of targeted drug delivery. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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14
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Dombi G, Horváth P, Fiser B, Mirzahosseini A, Dobó M, Szabó ZI, Tóth G. Enantioselective Human Serum Albumin Binding of Apremilast: Liquid Chromatographic, Fluorescence and Molecular Docking Study. Int J Mol Sci 2023; 24:ijms24032168. [PMID: 36768492 PMCID: PMC9916978 DOI: 10.3390/ijms24032168] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/13/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
The interaction between human serum albumin (HSA) and apremilast (APR), a novel antipsoriatic drug, was characterized by multimodal analytical techniques including high-performance liquid chromatography (HPLC), fluorescence spectroscopy and molecular docking for the first time. Using an HSA chiral stationary phase, the APR enantiomers were well separated, indicating enantioselective binding between the protein and the analytes. The influence of chromatographic parameters-type and concentration of the organic modifier, buffer type, pH, ionic strength of the mobile phase, flow rate and column temperature-on the chromatographic responses (retention factor and selectivity) was analyzed in detail. The results revealed that the eutomer S-APR bound to the protein to a greater extent than the antipode. The classical van 't Hoff method was applied for thermodynamic analysis, which indicated that the enantioseparation was enthalpy-controlled. The stability constants of the protein-enantiomer complexes, determined by fluorescence spectroscopy, were in accordance with the elution order observed in HPLC (KR-APR-HSA = 6.45 × 103 M-1, KS-APR-HSA = 1.04 × 104 M-1), showing that, indeed, the later-eluting S-APR displayed a stronger binding with HSA. Molecular docking was applied to study and analyze the interactions between HSA and the APR enantiomers at the atomic level. It was revealed that the most favored APR binding occurred at the border between domains I and II of HSA, and secondary interactions were responsible for the different binding strengths of the enantiomers.
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Affiliation(s)
- Gergely Dombi
- Department of Pharmaceutical Chemistry, Semmelweis University, H-1085 Budapest, Hungary
| | - Péter Horváth
- Department of Pharmaceutical Chemistry, Semmelweis University, H-1085 Budapest, Hungary
| | - Béla Fiser
- Higher Education and Industrial Cooperation Centre, University of Miskolc, Egyetemváros, H-3515 Miskolc, Hungary
- Department of Biology and Chemistry, Ferenc Rakoczi II Transcarpathian Hungarian College of Higher Education, Transcarpathia, 90200 Beregszasz, Ukraine
- Department of Physical Chemistry, Faculty of Chemistry, University of Lodz, 90-149 Łódź, Poland
| | - Arash Mirzahosseini
- Department of Pharmaceutical Chemistry, Semmelweis University, H-1085 Budapest, Hungary
| | - Máté Dobó
- Department of Pharmaceutical Chemistry, Semmelweis University, H-1085 Budapest, Hungary
| | - Zoltán-István Szabó
- Department of Pharmaceutical Industry and Management, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Targu Mures, 540142 Targu Mures, Romania
- Sz-imfidum Ltd., 525401 Lunga, Romania
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, H-1085 Budapest, Hungary
- Correspondence:
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Alanazi RLB, Zaki M, Bawazir WA. Synthesis and characterization of the new ligand, 1,2,4-triazino[5,6-b]indol-3-ylimino methyl naphthalene-2-ol and its Ni(II) and Cu(II) complexes: comparative studies of their in vitro DNA and HSA Binding. Biometals 2022; 35:1199-1223. [PMID: 36074281 DOI: 10.1007/s10534-022-00437-x] [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: 11/04/2021] [Accepted: 08/16/2022] [Indexed: 12/14/2022]
Abstract
A new ligand 1,2,4-triazino[5,6-b]indol-3-ylimino methyl naphthalene-2-ol (HL) was derived from 5H-[1,2,4]triazino[5,6-b]indol-3-amine and 2-hydroxy-1-naphthaldehyde. The metal complexes of the type [Ni(L)(Bipy)]1/2SO4 (1), [Cu(L)(Bipy)(H2O)2]1/2SO4 (2), [Ni(L)(Phen)]1/2SO4 (3) and [Cu(L)(Phen)(H2O)2]1/2SO4 (4) were synthesized. The ligand (HL) and complexes 1-4 were thoroughly characterized by elemental analysis and spectroscopic methods (FT-IR, ToF-MS, 1H NMR, 13C NMR), molar conductance and magnetic moment determination. The Ni(II) complexes 1 and 3 adopt the square planar geometry and Cu(II) complexes 2 and 4 acquire distorted octahedral arrangement. In vitro DNA binding behavior of ligand (HL) and metal complexes 1-4 was explored by fluorescence spectral and ethidium bromide studies. The outcomes reveal that the complexes interact with DNA via non-covalent groove binding and electrostatic interactions. The higher binding constant (K) values of 4.35 × 104 and 9.12 × 104 M-1 for complexes 2 and 4 indicate stronger binding ability with DNA. Moreover, in vitro human serum albumin (HSA) binding experiment with HL and complexes 1-4 reveals conformational modulations in the Trp-214 microenvironments in the subdomain IIA pocket.
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Affiliation(s)
- Reem L B Alanazi
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia
| | - Mehvash Zaki
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia.
| | - Wafa A Bawazir
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia
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16
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Chen J, Wang Y, Pan X, Cheng Y, Liu J, Cao X. Study on the interaction mechanism between luteoloside and xanthine oxidase by multi-spectroscopic and molecular docking methods. J Mol Recognit 2022; 35:e2985. [PMID: 35907782 DOI: 10.1002/jmr.2985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/29/2022] [Accepted: 07/25/2022] [Indexed: 01/05/2023]
Abstract
Gout is an inflammatory joint disease caused by urate crystal deposition, which is associated with hyperuricemia. Gout will take place when the uric acid accumulates. Xanthine oxidase (XO) is a crucial enzyme in the formation of uric acid. Inhibiting XO is one of the means to ameliorate gout. Luteoloside is a kind of natural flavonoid, which has an excellent prospect for relieving gout. But there are few reports on the interaction mechanism between luteoloside and XO currently. In this study, the interaction mechanism between luteoloside and XO was explored using spectroscopy and molecular docking. The fluorescence spectroscopy results indicated that luteoloside could make the intrinsic fluorescence of XO quenched, and the binding constant between luteoloside and XO was (1.85 ± 0.22) × 103 L mol-1 at 298 K. The synchronous fluorescence spectroscopy results showed that the absorption peaks of Tyr and Trp shifted blue, and the hydrophobicity of the microenvironment increased. Moreover, CD spectra showed that α-helix of XO decreased, β-sheet and β-turn increased after adding luteoloside. The results of molecular docking analysis showed that XO could combine with luteoloside through hydrogen bonds and hydrophobic force. The results indicated that luteoloside could remarkably interact with XO. Insights into the interaction mechanism provide a necessary basis for the search for low-toxic natural products as targets of XO. HIGHLIGHTS: Luteoloside and xanthine oxidase was a strong binding mode and had only one binding site. Luteoloside could cause α-helix reduced, β-sheet and β-turn increased, and change the secondary structure of XO. The binding between luteoloside and xanthine oxidase was a spontaneous process. The main binding force was hydrophobic force between luteoloside and xanthine oxidase.
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Affiliation(s)
- Junliang Chen
- Department of Biological Sciences, School of life Science, Liaoning University, Shenyang, People's Republic of China
| | - Yuxiao Wang
- Department of Food Science, College of Light Industry, Liaoning University, Shenyang, People's Republic of China
| | - Xinyu Pan
- Department of Biological Sciences, School of life Science, Liaoning University, Shenyang, People's Republic of China
| | - Ye Cheng
- Department of Biological Sciences, School of life Science, Liaoning University, Shenyang, People's Republic of China
| | - Jianli Liu
- Department of Biological Sciences, School of life Science, Liaoning University, Shenyang, People's Republic of China
| | - Xiangyu Cao
- Department of Biological Sciences, School of life Science, Liaoning University, Shenyang, People's Republic of China
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17
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Shahabadi N, Ghaffari L, Mardani Z, Shiri F. Multi‐Spectroscopic and Theoretical Analyses of Human Serum Albumin Binding to a Water‐Soluble Zinc(II) Complex including β‐Amino Alcohol. ChemistrySelect 2022. [DOI: 10.1002/slct.202200645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nahid Shahabadi
- Department of Inorganic Chemistry Faculty of Chemistry Razi University Kermanshah Iran
| | - Lida Ghaffari
- Department of Inorganic Chemistry Faculty of Chemistry Razi University Kermanshah Iran
| | - Zahra Mardani
- Department of Inorganic Chemistry Faculty of Chemistry Urmia University Urmia Iran
| | - Farshad Shiri
- Department of Inorganic Chemistry Faculty of Chemistry Razi University Kermanshah Iran
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18
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Chen F, Zhou L, Zhou B, Zhang S, Ma X, Zhou H, Tuo X. Elucidation on the interaction between transferrin and ascorbic acid: A study based on spectroscopic analysis, molecular docking technology, and antioxidant evaluation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Nanocarriers for β-Carotene Based on Milk Protein. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02868-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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20
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Lanthanide (III) complexes (Ln = Er and Yb) based on polypyridyl ligand: Synthesis, crystal structure, DNA-binding activity and interaction with human serum protein in vitro. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Xu M, Cui Z, Xiao Y, Liu C, Liu R, Zong W. Probing the potential toxicity by characterizing the binding mechanism of sodium dehydroacetate to human serum albumin. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:3655-3664. [PMID: 34882798 DOI: 10.1002/jsfa.11712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 11/03/2021] [Accepted: 12/09/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Sodium dehydroacetate (DHA-S) is a common food additive, which can combine with serum proteins in the plasma, but the interaction mechanism between DHA-S and human serum albumin (HSA) is unclear. In this study, multiple spectroscopy techniques, isothermal titration calorimetry (ITC), molecular docking and esterase activity test were employed to investigate the interaction mechanism of DHA-S and HSA. RESULTS A DHA-S-HSA complex was formed and the structure of HSA were altered by DHA-S. Since DHA-S changed the tight structure of the hydrophobic subdomain IIA where tryptophan (Trp) was placed, the hydrophobicity of the microenvironment of HSA was enhanced. With the addition of DHA-S, the skeleton structure of HSA became loose and the solvent shell on the HSA surface was destroyed. DHA-S altered the secondary structure of HSA, resulting in the decreased α-helix and increased β-sheet contents. The interaction was exothermic and spontaneous driven by van der Waals and hydrogen bonding. DHA-S inhibited the esterase activity of HSA. Molecular docking demonstrated that the binding site of DHA-S on HSA located at the cavity of subdomains IIA and IIIA, but the amino acids related to esterase activity of HSA were not in the binding pocket, indicating that the mechanism by which DHA-S inhibited HSA esterase activity was the change in protein structure. CONCLUSION This study illustrated that DHA-S interacted with HSA and the structure and function of HSA were affected by DHA-S. This research could help to understand the toxicity of DHA-S and provide basic data for safe use of food additives. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Mengchen Xu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, P. R. China
| | - Zhaohao Cui
- Qingdao Research Academy of Environmental Sciences, Qingdao, P. R. China
| | - Yihua Xiao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, P. R. China
| | - Changqing Liu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, P. R. China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Qingdao, P. R. China
| | - Wansong Zong
- College of Population, Resources and Environment, Shandong Normal University, Jinan, P. R. China
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22
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Tolba MM, Salim MM. Insights for applying erythrosine B as a green fluorescence probe for estimation of anticancer tamoxifen and its analog; clomiphene in nanogram concentration. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 263:120156. [PMID: 34293668 DOI: 10.1016/j.saa.2021.120156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/20/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
The growth of tumor tissue is extremely pervasive among post-menopausal women. Commonly, from the clinical application, adjuvant selective estrogen receptor modulators such as tamoxifen are prescribed for prohibiting metastatic breast cancer, while its analog, clomiphene, is used to treat infertility in women. Lately, the significance of green chemistry on our environment was through reducing the influence of hazardous chemicals. Consequently, efforts were screened to perform a fast and simple eco-friendly green method for the determination of two aromatase inhibitors. In this study, a sensitive green spectrofluorimetric approach was developed to detect and characterize tamoxifen citrate (TAM) and clomiphene citrate (CLO) via complex formation with erythrosine B. The reaction between erythrosine B dye (EB) and the two aromatase inhibitors results in quenching the fluorescence activity of the dye by the formation of ion-pair in Britton-Robinson buffer (BRB) solution (pH 4.3) at 554 nm (λex = 527 nm). The approach outcome confirmed that the solvent's inherent nature has a critical impact on the approachs' sensitivity and reproducibility. An approved linear correlation was achieved between the reduction in the emission value of EB's fluorescence and the concentration in the ranges of 40.0-600.0 ng/mL for both TAM and CLO with mean % recoveries 100.20 ± 0.93 and 100.07 ± 1.09, respectively. The approach was validated regarding ICH protocols, and the outcomes were acceptable. The changes in Gibb's free energy (ΔG°) by the obtained ion-pair between EB and TAM or CLO were -36.65 or -37.03 kJ mol-1, respectively, which indicates the reaction feasibility at ambient temperature. Commercial dosage forms for TAM and CLO were simply analyzed, and good recoveries were achieved within the range. The National Environmental Methods Index, Analytical Eco-Scale, and Green Analytical Procedure Index applications to our illustrated approach present additional eligibility to this study.
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Affiliation(s)
- M M Tolba
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - M M Salim
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University - Egypt, New Damietta 34511, Egypt.
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Liu SY, Zhang YY, Chu GX, Bao GH. N-ethyl-2-pyrrolidinone substitution enhances binding affinity between tea flavoalkaloids and human serum albumin: Greatly influenced by esterization. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 262:120097. [PMID: 34182296 DOI: 10.1016/j.saa.2021.120097] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/04/2021] [Accepted: 06/17/2021] [Indexed: 05/25/2023]
Abstract
Formation of catechins-human serum albumin (HSA) complex contributes to stably transporting catechins and regulating their bioavailability. Recently, a new class of catechins namely flavoalkaloids have been reported from tea. The unique structural modification with an N-ethyl-2-pyrrolidinone ring at catechins from these flavoalkaloids has raised our interest in their HSA binding affinity. Thus, we investigated the interaction between HSA and flavoalkaloids by molecular docking, UV-Vis spectroscopy (UV), fluorescence quenching approaches, and surface plasmon resonance (SPR). Thermodynamic parameters suggest that electrostatic forces contribute greatly to the interaction. The binding ability is affected by different ester group (galloyl or cinnamoyl) at 3-OH, N-ethyl-2-pyrrolidinone substituted position (C-6 or C-8), C-2, C-3 and C-5''' configurations, and hydroxyl group numbers at B ring, among which the 3-O-cinnamoyl substitution and 5'''-R configuration present the strongest contributions. UV showed slight changes in the conformation and microenvironment of HSA during the binding process. The quenching and binding constants suggest that the quenching is a static type. The small KD values (1-20 μM) detected by SPR confirmed the strong binding affinities between HSA and flavoalkaloids. Present study will help us to understand the interaction mechanism between flavoalkaloids and HSA, shedding light on structural modification of common catechins to enhance the stability, bioavailability and bioactivities.
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Affiliation(s)
- Shi-Yu Liu
- Natural Products Laboratory, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, People's Republic of China.
| | - Yuan-Yuan Zhang
- Natural Products Laboratory, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, People's Republic of China.
| | - Gang-Xiu Chu
- Natural Products Laboratory, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, People's Republic of China.
| | - Guan-Hu Bao
- Natural Products Laboratory, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, People's Republic of China.
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24
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Comparing the interaction of four structurally similar coumarins from Fraxinus Chinensis Roxb. with HSA through multi-spectroscopic and docking studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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25
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Fluorescent sensing of free bilirubin at nanomolar level using a Langmuir-Blodgett film of glucuronic acid-functionalized gold nanoclusters. Anal Bioanal Chem 2021; 413:7009-7019. [PMID: 34535815 DOI: 10.1007/s00216-021-03660-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 08/21/2021] [Accepted: 09/10/2021] [Indexed: 10/20/2022]
Abstract
Serum bilirubin is an important indicator to assess liver function and diagnose various types of liver diseases. The level of serum bilirubin is also negatively correlated with the risk of cardiovascular disease and cancer. We had fabricated a fluorescent film sensor aiming at free bilirubin detection at the nanomolar level. Gold nanoclusters capped by human serum albumin (HSA-AuNCs) were utilized as a fluorescent platform for bilirubin biorecognition. HSA-AuNCs were functionalized with glucuronic acid to increase the binding sites for bilirubin. An ultrathin film of glucuronic acid-functionalized gold nanoclusters was obtained by the Langmuir-Blodgett (LB) technique. When exposed to bilirubin, the interaction between free bilirubin and the functionalized AuNCs resulted in fluorescent quenching of the film. Good linearity could be achieved for the quenching efficiency versus the logarithm of free bilirubin concentration over a concentration range of 1.00 nM~5.00 μM. The limit of detection (LOD) was calculated to be (2.70 ± 0.14) × 10-1 nM (S/N = 3). The film sensor presents a good anti-interference capability towards common substances coexisting with bilirubin in serum. Satisfactory results achieved in the tests of real serum samples indicate that the LB film sensor can be used for bilirubin determination in nanomolar concentration.
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26
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Liao X, Zhu C, Zhang H, Li X, Wen X, Zhang SL, Shen Y. Investigation on the binding of cyanobacterial metabolite calothrixin A with human serum albumin for evaluating its potential toxicology. Food Chem Toxicol 2021; 155:112396. [PMID: 34245828 DOI: 10.1016/j.fct.2021.112396] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/29/2021] [Accepted: 07/06/2021] [Indexed: 01/04/2023]
Abstract
Calothrixin A (CLA), as a carbazole-1,4-quinone alkaloid with unique indolo [3,2-j] phenanthridine framework, is a natural metabolite from the Calothrix cyanobacteria. Since the interaction to the functional serum albumins may play an important role in estimating its potential physiological or toxicological effects in vivo, we here explored the binding information of CLA with human serum albumin (HSA) by multi-spectroscopic experiments and computational approaches. The molecular docking results showed that there was one binding site of CLA to the site I (subdomain IIA) of HSA, causing the spontaneous formation of the ground state complex of CLA-HSA through the integration of hydrogen bond, hydrophobic interaction, and electrostatic interaction. Moreover, CLA could effectively trigger the change of HSA's secondary structure because of an obvious decrease of α-helical content in HSA. Taking into consideration of the crucial role of HSA to transport extraneous functional small molecules in vivo, this study may provide a worthy theoretical basis to evaluate the in vivo toxicity of CLA, aiming to reduce/avoid the potential toxic side effects of CLA in the next hit-to-lead campaign.
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Affiliation(s)
- Xianjiu Liao
- West Guangxi Key Laboratory for Prevention and Treatment of High-Incidence Diseases, Youjiang Medical University for Nationalities, Baise, 533000, China
| | - Chunlei Zhu
- School of Food & Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, 230009, China
| | - Haiyan Zhang
- Beijing Institute of Technology, Zhuhai Beijing Institute of Technology, Zhuhai, Guangdong, 519088, China
| | - Xuemin Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Xiaoqing Wen
- West Guangxi Key Laboratory for Prevention and Treatment of High-Incidence Diseases, Youjiang Medical University for Nationalities, Baise, 533000, China
| | - Shao-Lin Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China.
| | - Yizhong Shen
- School of Food & Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, 230009, China.
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