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Spectroscopic and Theoretical Analysis of the Interaction between Plasma Proteins and Phthalimide Analogs with Potential Medical Application. Life (Basel) 2023; 13:life13030760. [PMID: 36983915 PMCID: PMC10051393 DOI: 10.3390/life13030760] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
One of the groups of organic compounds with potential use in medicine and pharmacy is phthalimide derivatives. They are characterized by a wide range of properties such as antibacterial, antifungal, and anti-inflammatory. In this study, we focused on research on four phthalimide derivatives with proven non-toxicity, which are cyclooxygenase inhibitors. With the use of molecular docking study and spectroscopic methods, such as fluorescence, circular dichroism, and FT-IR spectroscopies, we analyzed the way the tested compounds interact with plasma proteins. Among the many proteins present in the plasma, we selected three: albumin, α1-acid glycoprotein, and gamma globulin, which play significant roles in the human body. The obtained results showed that all tested compounds bind to the analyzed proteins. They interact most strongly with albumin, which is a transport protein. However, interactions with serum albumin and orosomucoid do not cause significant changes in their structures. Only in the case of gamma globulins significant changes were observed in protein secondary structure.
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Ali FE, Ibrahim IM, Ghogar OM, Abd-alhameed EK, Althagafy HS, Hassanein EH. Therapeutic interventions target the NLRP3 inflammasome in ulcerative colitis: Comprehensive study. World J Gastroenterol 2023; 29:1026-1053. [PMID: 36844140 PMCID: PMC9950862 DOI: 10.3748/wjg.v29.i6.1026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/29/2022] [Accepted: 01/30/2023] [Indexed: 02/10/2023] Open
Abstract
One of the significant health issues in the world is the prevalence of ulcerative colitis (UC). UC is a chronic disorder that mainly affects the colon, beginning with the rectum, and can progress from asymptomatic mild inflammation to extensive inflammation of the entire colon. Understanding the underlying molecular mechanisms of UC pathogenesis emphasizes the need for innovative therapeutic approaches based on identifying molecular targets. Interestingly, in response to cellular injury, the NLR family pyrin domain containing 3 (NLRP3) inflammasome is a crucial part of the inflammation and immunological reaction by promoting caspase-1 activation and the release of interleukin-1β. This review discusses the mechanisms of NLRP3 inflammasome activation by various signals and its regulation and impact on UC.
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Affiliation(s)
- Fares E.M Ali
- Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Islam M. Ibrahim
- Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Osama M Ghogar
- Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Esraa K. Abd-alhameed
- Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 12345, Egypt
| | - Hanan S. Althagafy
- Department of Biochemistry, Faculty of Science, University of Jeddah, Jeddah 12345, Saudi Arabia
| | - Emad H.M. Hassanein
- Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
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Amine-Reactive BODIPY Dye: Spectral Properties and Application for Protein Labeling. Molecules 2022; 27:molecules27227911. [PMID: 36432012 PMCID: PMC9692440 DOI: 10.3390/molecules27227911] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/11/2022] [Accepted: 11/13/2022] [Indexed: 11/17/2022] Open
Abstract
A boron-dipyrromethene (BODIPY) derivative reactive towards amino groups of proteins (NHS-Ph-BODIPY) was synthesized. Spectroscopic and photophysical properties of amine-reactive NHS-Ph-BODIPY and its non-reactive precursor (COOH-Ph-BODIPY) in a number of organic solvents were investigated. Both fluorescent dyes were characterized by green absorption (521-532 nm) and fluorescence (538-552 nm) and medium molar absorption coefficients (46,500-118,500 M-1·cm-1) and fluorescence quantum yields (0.32 - 0.73). Solvent polarizability and dipolarity were found to play a crucial role in solvent effects on COOH-Ph-BODIPY and NHS-Ph-BODIPY absorption and emission bands maxima. Quantum-chemical calculations were used to show why solvent polarizability and dipolarity are important as well as to understand how the nature of the substituent affects spectroscopic properties of the fluorescent dyes. NHS-Ph-BODIPY was used for fluorescent labeling of a number of proteins. Conjugation of NHS-Ph-BODIPY with bovine serum albumin (BSA) resulted in bathochromic shifts of absorption and emission bands and noticeable fluorescence quenching (about 1.5 times). It was demonstrated that the sensitivity of BSA detection with NHS-Ph-BODIPY was up to eight times higher than with Coomassie brilliant blue while the sensitivity of PII-like protein PotN (PotN) detection with NHS-Ph-BODIPY and Coomassie brilliant blue was almost the same. On the basis of the molecular docking results, the most probable binding sites of NHS-Ph-BODIPY in BSA and PotN and the corresponding binding free energies were estimated.
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Bhosale M, Jeelani I, Nawaz A, Abe H, Padhye S. Site-Specific Binding of Anticancer Drugs to Human Serum Albumin. Anticancer Agents Med Chem 2022; 22:2876-2884. [PMID: 35331098 DOI: 10.2174/1871520622666220324094033] [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: 08/10/2021] [Revised: 11/15/2021] [Accepted: 01/13/2022] [Indexed: 11/22/2022]
Abstract
The interaction of drugs with proteins plays a very important role in the distribution of the drug. Human serum albumin (HSA) is the most abundant protein in the human body and showing great binding characteristics has gained a lot of importance pharmaceutically. It plays an essential role in the pharmacokinetics of a number of drugs and hence several reports are available on the interaction of drugs with HSA. It can bind to cancer drugs and thus it is crucial to look at the binding characteristics of these drugs with HSA. Herein we summarize the binding properties of some anti-cancer drugs by specifically looking into the binding site with HSA. The number of drugs binding at Sudlow's site I situated in subdomain II A is more than the drugs binding at Sudlow's site II.
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Affiliation(s)
- Mrinalini Bhosale
- Department of Chemistry, Abeda Inamdar Senior College of Arts, Science and Commerce, Savitribai Phule Pune University, Pune 411001, India
| | - Ishtiaq Jeelani
- Graduate School of Innovative Life Science, University of Toyama, Toyama, 3190 Gofuku 930-8555, Japan
- Department of Molecular and Medical Pharmacology, Faculty of Medicine, University of Toyama, Toyama, 2630 Sugitani 930-0194, Japan
| | - Allah Nawaz
- Department of Molecular and Medical Pharmacology, Faculty of Medicine, University of Toyama, Toyama, 2630 Sugitani 930-0194, Japan
| | - Hitoshi Abe
- Faculty of Engineering, University of Toyama, Toyama, 3190 Gofuku 930-8555, Japan
| | - Subhash Padhye
- Department of Chemistry, Abeda Inamdar Senior College of Arts, Science and Commerce, Savitribai Phule Pune University, Pune 411001, India
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Zhang N, He H, Zhang M, Lu X, Li W, Wang R, Chang J. Investigation of the interactions between three flavonoids and human serum albumin by isothermal titration calorimetry, spectroscopy, and molecular docking. NEW J CHEM 2022. [DOI: 10.1039/d2nj00314g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interactions between three flavonoids (liquiritin, quercitrin, and taxifolin) and human serum albumin (HSA) are investigated by spectroscopic techniques, isothermal titration calorimetry (ITC), and molecular docking study. Results show that...
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Gan Y, Bai N, Li X, Gao S, Wang R. A study of the binding between radicicol and four proteins by means of spectroscopy and molecular docking. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/1747519821993068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The interactions between radicicol and four proteins (catalase, trypsin, pepsin, and human serum protein) are investigated by spectroscopic techniques and molecular docking. A static quenching process is confirmed. The binding constant value between radicicol and human serum protein is the largest among the four proteins. Results reveal changes in the micro-environment of the protein by the addition of radicicol. It is found that radicicol shows an inhibitory effect on the activity of proteins (catalase, trypsin, and pepsin). Molecular docking results are consistent with the thermodynamic experimental results. This work provides clues to the elucidation of the mechanisms of the interactions between radicicol and proteins.
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Affiliation(s)
- Ya Gan
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, P.R. China
| | - Ning Bai
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, P.R. China
| | - Xitong Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, P.R. China
| | - Shuiting Gao
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, P.R. China
| | - Ruiyong Wang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, P.R. China
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Gecibesler IH, Aydin M. Plasma Protein Binding of Herbal-Flavonoids to Human Serum Albumin and Their Anti-proliferative Activities. AN ACAD BRAS CIENC 2020; 92:e20190819. [PMID: 32491127 DOI: 10.1590/0001-3765202020190819] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022] Open
Abstract
Herbal-flavonoids (HF) as polyphenolic secondary metabolites are taken in the daily diet to join in many metabolic processes in the human organism. Anti-proliferative activities and human serum albumin (HSA) binding capacities of herbal-flavonoids namely 7,5'-dimethoxyisoetin (HF1), homoorientin-6''-4-O-methyl-myo-inositol (HF2), (2R, 3R)-(+)-dihydrokaempferol-7,4'-dimethylether (HF3), eriodictyol-7,4'-dimethylether (HF4) and flavonoids isoorientin (HF5) and genkwanin (HF6) were investigated. Anti-proliferative activities were determined by the xCELLigence system by treatment with human prostate (PC3) and cervical cancer (HeLa) cells. The binding capacities were studied by two-dimensional (2D-FL) and three-dimensional (3D-FL) fluorescence spectroscopy. HeLa and PC3 cell lines were treated with flavonoids at 10, 50 and 100 μg/mL concentrations over a 48 hour period. Stable anti-proliferative efficacy plots were obtained for tested flavonoids. From the flavonoids, HF3 and HF4 showed the strongest anti-proliferative effect against PC3 and HeLa cell line. HF1 and HF2 exhibited the strongest binding capacity to the HSA corresponding to Kb values of 3.81 x 104 M-1 and 6.00 x 104 M-1, respectively. The studies revealed that the flavonoids form the basis of in vivo preclinical studies as important nutraceuticals of the daily diet, as well as modelled in medical and pharmacological applications.
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Affiliation(s)
| | - Murat Aydin
- Faculty of Science and Art, Bingol University, Bingol, Turkey
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Dohare N, Siddiquee MA, Parray MD, Kumar A, Patel R. Esterase activity and interaction of human hemoglobin with diclofenac sodium: A spectroscopic and molecular docking study. J Mol Recognit 2020; 33:e2841. [PMID: 32150309 DOI: 10.1002/jmr.2841] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/09/2020] [Accepted: 02/17/2020] [Indexed: 12/23/2022]
Abstract
To get an idea about the pharmacokinetics and pharmacodynamics, it is important to study the drug-protein interaction. Therefore, herein, we studied the interaction of diclofenac sodium (DIC) with human hemoglobin. The binding study of nonsteroidal antiinflammatory drug, DIC with human hemoglobin (HHB) was done by utilizing fluorescence, UV-visible, time-resolved fluorescence and far-UV circular dichroism spectroscopy (CD). Various thermodynamic parameters such as enthalpy change (ΔH), entropy change (ΔS), and Gibbs free energy change (ΔG) were also calculated. CD results showed that DIC induces secondary structure change in HHB. Fluorescence resonance energy transfer was also performed. Additionally, it was also observed that DIC inhibits the esterase-like enzymatic activity of HHB via competitive inhibition.
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Affiliation(s)
- Neeraj Dohare
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Md Abrar Siddiquee
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Mehrajud Din Parray
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Amit Kumar
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
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Ma L, Li Y, Lei L, Zeng J, Zhang J, Qiao Y, Wu Z. Real-time process quality control of ramulus cinnamomi by critical quality attribute using microscale thermophoresis and on-line NIR. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117463. [PMID: 31421349 DOI: 10.1016/j.saa.2019.117463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/06/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
Real-time process quality control of ramulus cinnamomi (cassia twig) is still a challenge in pharmaceutical industry. Rapid critical quality attribute (CQA) determination of ramulus cinnamomi is essential for quality control. Microscale thermophoresis (MST) was used to investigate the CQA of ramulus cinnamomi by the interaction with biomacromolecule. There was a good affinity between cinnamaldehyde and human serum albumin (HSA) with Ka as 2.1722×103mol/L. It was an excellent combination of similarity to ibuprofen with same binding force as discovered as hydrogen bond and van der Waals force. Furthermore, regarding cinnamaldehyde as CQA, on-line near-infrared was used to monitor pilot extraction process of ramulus cinnamomi combined with high performance liquid chromatography (HPLC). Quantitative model was established with Rpre2 as 0.9798 and RMSECV as 0.0993, suggesting the NIR model was so robust and accurate for pilot process quality control. This method provided a perfect guideline for rapid CQA determination and real-time process quality control of Chinese materia medica (CMM) based on a vital CQA.
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Affiliation(s)
- Lijuan Ma
- Beijing University of Chinese Medicine, School of Chinese Materia Medica, Beijing 102488, China; Pharmaceutical Engineering and New Drug Development of TCM of Ministry of Education, Beijing 102488, China
| | - Yang Li
- Beijing University of Chinese Medicine, School of Chinese Materia Medica, Beijing 102488, China; Pharmaceutical Engineering and New Drug Development of TCM of Ministry of Education, Beijing 102488, China
| | - Leting Lei
- Beijing University of Chinese Medicine, School of Chinese Materia Medica, Beijing 102488, China; Pharmaceutical Engineering and New Drug Development of TCM of Ministry of Education, Beijing 102488, China
| | - Jingqi Zeng
- Fujian University of Traditional Chinese Medicine, College of Pharmacy, Fujian 350122, China
| | - Jing Zhang
- Fujian University of Traditional Chinese Medicine, College of Pharmacy, Fujian 350122, China
| | - Yanjiang Qiao
- Beijing University of Chinese Medicine, School of Chinese Materia Medica, Beijing 102488, China; Pharmaceutical Engineering and New Drug Development of TCM of Ministry of Education, Beijing 102488, China.
| | - Zhisheng Wu
- Beijing University of Chinese Medicine, School of Chinese Materia Medica, Beijing 102488, China; Pharmaceutical Engineering and New Drug Development of TCM of Ministry of Education, Beijing 102488, China.
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10
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Tarabasz D, Kukula-Koch W. Palmatine: A review of pharmacological properties and pharmacokinetics. Phytother Res 2019; 34:33-50. [PMID: 31496018 DOI: 10.1002/ptr.6504] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 06/18/2019] [Accepted: 08/19/2019] [Indexed: 12/11/2022]
Abstract
The aim of this review is to collect together the results of the numerous studies over the last two decades on the pharmacological properties of palmatine published in scientific databases like Scopus and PubMed, which are scattered across different publications. Palmatine, an isoquinoline alkaloid from the class of protoberberines, is a yellow compound present in the extracts from different representatives of Berberidaceae, Papaveraceae, Ranunculaceae, and Menispermaceae. It has been extensively used in traditional medicine of Asia in the treatment of jaundice, liver-related diseases, hypertension, inflammation, and dysentery. New findings describe its possible applications in the treatment of civilization diseases like central nervous system-related problems. This review intends to let this alkaloid come out from the shade of a more frequently described alkaloid: berberine. The toxicity, pharmacokinetics, and biological activities of this protoberberine alkaloid will be developed in this work.
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Affiliation(s)
| | - Wirginia Kukula-Koch
- Chair and Department of Pharmacognosy with Medicinal Plants Unit, Medical University of Lublin, Lublin, Poland
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Qi F, Sun Y, Lv M, Qin F, Cao W, Bi L. Effects of palmatine hydrochloride mediated photodynamic therapy on oral squamous cell carcinoma. Photochem Photobiol Sci 2019; 18:1596-1605. [PMID: 31099374 DOI: 10.1039/c9pp00040b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oral squamous cell carcinoma (OSCC) is a common malignant tumor, accounting for about 7% of all malignant tumors. Palmatine hydrochloride (PaH) is the alkaloid constituent of Fibraurea tinctoria Lour. The present study aims to investigate the antitumor effect of photodynamic therapy (PDT) with PaH (PaH-PDT) on human OSCC cell lines both in vitro and in vivo. The results indicate that PaH-PDT exhibited a potent phototoxic effect in cell proliferation and produced cell apoptosis. PaH-PDT increased the percentage of cells in the G0/G1 phase and decreased the CDK2 and Cyclin E1 protein level. In addition, PaH-PDT markedly increased the generation of intracellular ROS, which can be suppressed using the ROS scavenger N-acetylcysteine (NAC). Furthermore, PaH-PDT increased the expression of p53 protein in vitro and in vivo. In vivo experiments revealed that the PaH-PDT resulted in an effective inhibition of tumor growth and prolonged the survival time of tumor-bearing mice. Moreover, no obvious signs of side effects or a drop in body weight was observed. These results suggested that PaH was a promising sensitizer that can be combined with light to produce significant anti-tumor effects in oral squamous cell carcinoma via enhanced ROS production and up-regulated expression of p53.
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Affiliation(s)
- Feng Qi
- Department of Stomatology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, China.
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12
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Dávila–Rodríguez M, Barolli JP, de Oliveira KM, Colina–Vegas L, da Silva Miranda F, Castellano EE, Von Poelhsitz G, Batista AA. Carbonyl–heterobimetallic Ru(II)/Fe(II)–complexes containing polypyridyl ligands: Synthesis, characterization, cellular viability assays and interactions with biomolecules. Arch Biochem Biophys 2018; 660:156-167. [DOI: 10.1016/j.abb.2018.10.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/25/2018] [Accepted: 10/30/2018] [Indexed: 12/18/2022]
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Akbay N, Taskin Tok T, Seferoğlu Z, Gökoğlu E. Investigation of binding properties of two ethidium derivatives with serum albumins: spectral and computational approach. J Biomol Struct Dyn 2018; 36:3114-3121. [DOI: 10.1080/07391102.2017.1380536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Nuriye Akbay
- Department of Chemistry, Istanbul Medeniyet University, 34700 Istanbul, Turkey
| | - Tugba Taskin Tok
- Department of Chemistry, Gaziantep University, 27310 Gaziantep, Turkey
| | | | - Elmas Gökoğlu
- Department of Chemistry, Hacettepe University, 06800 Beytepe, Ankara, Turkey
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Wang Z, Wang N, Han X, Wang R, Chang J. Interaction of two flavonols with fat mass and obesity-associated protein investigated by fluorescence quenching and molecular docking. J Biomol Struct Dyn 2017; 36:3388-3397. [DOI: 10.1080/07391102.2017.1388287] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Zechun Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
| | - Ning Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
| | - Xinxin Han
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
| | - Ruiyong Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
| | - Junbiao Chang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
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15
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Ali K, Abul Qais F, Dwivedi S, Abdel-Salam EM, Ansari SM, Saquib Q, Faisal M, Al-Khedhairy AA, Al-Shaeri M, Musarrat J. Titanium dioxide nanoparticles preferentially bind in subdomains IB, IIA of HSA and minor groove of DNA. J Biomol Struct Dyn 2017; 36:2530-2542. [DOI: 10.1080/07391102.2017.1361339] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Khursheed Ali
- Faculty of Agricultural Sciences, Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh, India
| | - Faizan Abul Qais
- Faculty of Agricultural Sciences, Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh, India
| | - Sourabh Dwivedi
- Faculty of Agricultural Sciences, Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh, India
| | - Eslam M. Abdel-Salam
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sabiha M. Ansari
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Quaiser Saquib
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad Faisal
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Majed Al-Shaeri
- Faculty of Science, Department of Biological Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Javed Musarrat
- Faculty of Agricultural Sciences, Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh, India
- School of Biosciences and Biotechnology, Baba Ghulam Shah Badshah University, Rajouri, India
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16
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Zhou JT, Li CL, Tan LH, Xu YF, Liu YH, Mo ZZ, Dou YX, Su R, Su ZR, Huang P, Xie JH. Inhibition of Helicobacter pylori and Its Associated Urease by Palmatine: Investigation on the Potential Mechanism. PLoS One 2017; 12:e0168944. [PMID: 28045966 PMCID: PMC5207512 DOI: 10.1371/journal.pone.0168944] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 12/08/2016] [Indexed: 01/17/2023] Open
Abstract
In this paper, we evaluated the anti-Helicobacter pylori activity and the possible inhibitory effect on its associated urease by Palmatine (Pal) from Coptis chinensis, and explored the potential underlying mechanism. Results indicated that Pal exerted inhibitory effect on four tested H. pylori strains (ATCC 43504, NCTC 26695, SS1 and ICDC 111001) by the agar dilution test with minimum inhibitory concentration (MIC) values ranging from 100 to 200 μg/mL under neutral environment (pH 7.4), and from 75 to 100 μg/mL under acidic conditions (pH 5.3), respectively. Pal was observed to significantly inhibit both H. pylori urease (HPU) and jack bean urease (JBU) in a dose-dependent manner, with IC50 values of 0.53 ± 0.01 mM and 0.03 ± 0.00 mM, respectively, as compared with acetohydroxamic acid, a well-known urease inhibitor (0.07 ± 0.01 mM for HPU and 0.02 ± 0.00 mM for JBU, respectively). Kinetic analyses showed that the type of urease inhibition by Pal was noncompetitive for both HPU and JBU. Higher effectiveness of thiol protectors against urease inhibition than the competitive Ni2+ binding inhibitors was observed, indicating the essential role of the active-site sulfhydryl group in the urease inhibition by Pal. DTT reactivation assay indicated that the inhibition on the two ureases was reversible, further supporting that sulfhydryl group should be obligatory for urease inhibition by Pal. Furthermore, molecular docking study indicated that Pal interacted with the important sulfhydryl groups and inhibited the active enzymatic conformation through N-H ∙ π interaction, but did not interact with the active site Ni2+. Taken together, Pal was an effective inhibitor of H. pylori and its urease targeting the sulfhydryl groups, representing a promising candidate as novel urease inhibitor. This investigation also gave additional scientific support to the use of C. chinensis to treat H. pylori-related gastrointestinal diseases in traditional Chinese medicine. Pal might be a potentially beneficial therapy for gastritis and peptic ulcers induced by H. pylori infection and other urease-related diseases.
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Affiliation(s)
- Jiang-Tao Zhou
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Cai-Lan Li
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Li-Hua Tan
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Yi-Fei Xu
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Yu-Hong Liu
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Zhi-Zhun Mo
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Yao-Xing Dou
- The First Affiliated Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Rui Su
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Zi-Ren Su
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Ping Huang
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Jian-Hui Xie
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, PR China
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Sekar G, Florance I, Sivakumar A, Mukherjee A, Chandrasekaran N. Role of PAMAM-OH dendrimers against the fibrillation pathway of biomolecules. Int J Biol Macromol 2016; 93:1007-1018. [PMID: 27651276 DOI: 10.1016/j.ijbiomac.2016.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/31/2016] [Accepted: 09/01/2016] [Indexed: 12/20/2022]
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Ariga GG, Naik PN, Nandibewoor ST, Chimatadar SA. Quenching of fluorescence by meclizine, a probe study for structural and conformational changes in human serum albumin. J Biomol Struct Dyn 2016; 35:3161-3175. [DOI: 10.1080/07391102.2016.1245159] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Girish G. Ariga
- Department of Studies in Chemistry, Karnatak University, Dharwad 580003, India
| | - Praveen N. Naik
- Department of Studies in Chemistry, Karnatak University, Dharwad 580003, India
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Sekar G, Sivakumar A, Mukherjee A, Chandrasekaran N. Prion like behavior of HSA-hydroxylated MWCNT interface. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2016; 161:411-421. [PMID: 27314539 DOI: 10.1016/j.jphotobiol.2016.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 06/05/2016] [Indexed: 06/06/2023]
Abstract
Carbon nanotubes (CNTs) with unique and outstanding properties were expected to revolutionize various aspects of the biomedical sector. Interaction studies of proteins with functionalized CNTs would shed light on their toxicological aspects upon entering the human body. Hyperchromicity of the UV-Visible spectra and declining fluorescence potential of HSA on interaction with CNTs suggested ground state complex to exist between them. Synchronous and 3D spectral features of CNT-HSA system proposed their possible binding site to occur nearby Trp and Tyr residues. FTIR and FT-Raman spectra showed a shift in the amide band region that proportionate the possible alteration to occur in the alpha-helical structures. CD far and near spectra showed loss of alpha-helical structures and shift in the Trp position of the polypeptide backbone. CNT's UV and FTIR band showed shift on interaction with HSA, which conveys the possible aggregation of CNTs in the presence of protein. The promoting role of CNTs against HSA fibril formation has been confirmed by spectroscopic and microscopic evaluations. Secondary conformational changes, besides the existence of increased beta-sheet structures of HSA amyloid fibrils, remain similar to the amyloid behavior of Prion protein. Hence, HSA fibril-CNT interface predominates the possible mechanism for several amyloid-related disorders concerning their toxic accumulations in the body.
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Affiliation(s)
- Gajalakshmi Sekar
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, Tamil Nadu, India
| | - A Sivakumar
- School of Advanced Sciences, VIT University, Vellore, 632014, Tamil Nadu, India
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, Tamil Nadu, India
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Wu J, Xiao Q, Zhang N, Xue C, Leung AW, Zhang H, Tang QJ, Xu C. Palmatine hydrochloride mediated photodynamic inactivation of breast cancer MCF-7 cells: Effectiveness and mechanism of action. Photodiagnosis Photodyn Ther 2016; 15:133-8. [PMID: 27444887 DOI: 10.1016/j.pdpdt.2016.07.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/06/2016] [Accepted: 07/15/2016] [Indexed: 11/18/2022]
Abstract
Breast cancer is one of the commonest malignant tumors threatening to women. The present study aims to investigate the effect of photodynamic action of palmatine hydrochloride (PaH), a naturally occurring photosensitizer isolated from traditional Chinese medicine (TCM), on apoptosis of breast cancer cells. Firstly, cellular uptake of PaH in MCF-7 cells was measured and the cytotoxicity of PaH itself on breast cancer MCF-7 cells was estimated using the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. Subcellular localization of PaH in MCF-7 cells was observed using confocal laser scanning microscopy (CLSM). For photodynamic treatment, MCF-7 cells were incubated with PaH and then irradiated by visible light (470nm) from a LED light source. Photocytotoxicity was investigated 24h after photodynamic treatment using MTT assay. Cell apoptosis was analyzed 18h after photodynamic treatment using flow cytometry with Annexin V/PI staining. Nuclear was stained using Hoechst 33342 and observed under a fluorescence microscope. Intracellular production of reactive oxygen species (ROS) was studied by measuring the fluorescence of 2, 7-dichlorofluorescein (DCF) using a flow cytometry. Results showed that PaH treatment alone had no or minimum cytotoxicity to MCF-7 cells after incubation for 24h in the dark. After incubation for 40min, the cellular uptake of PaH reached to the maximum, and PaH mainly located in mitochondria and endoplasmic reticulum of MCF-7 cells. Photodynamic treatment of PaH demonstrated a significant photocytotoxicity on MCF-7 cells, induced remarkable cell apoptosis and significantly increased intracellular ROS level. Our findings demonstrated that PaH as a naturally occurring photosensitizer induced cell apoptosis and significantly killed MCF-7 cells.
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Affiliation(s)
- Juan Wu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China; Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Qicai Xiao
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Na Zhang
- Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Changhu Xue
- Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Albert Wingnang Leung
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Hongwei Zhang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Qing-Juan Tang
- Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao, China.
| | - Chuanshan Xu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
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Wu J, Xiao Q, Zhang N, Xue C, Leung AW, Zhang H, Xu C, Tang QJ. Photodynamic action of palmatine hydrochloride on colon adenocarcinoma HT-29 cells. Photodiagnosis Photodyn Ther 2016; 15:53-8. [PMID: 27181460 DOI: 10.1016/j.pdpdt.2016.05.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 04/20/2016] [Accepted: 05/11/2016] [Indexed: 02/07/2023]
Abstract
Palmatine hydrochloride (PaH) is a natural active compound from a traditional Chinese medicine (TCM). The present study aims to evaluate the effect of PaH as a new photosensitizer on colon adenocarcinoma HT-29 cells upon light irradiation. Firstly, the absorption and fluorescence spectra of PaH were measured using a UV-vis spectrophotometer and RF-1500PC spectrophotometer, respectively. Singlet oxygen ((1)O2) production of PaH was determined using 1, 3-diphenylisobenzofuran (DPBF). Dark toxicity of PaH was estimated using the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. Cellular uptake of PaH in HT-29 cells was detected at different time intervals. Subellular localization of PaH in HT-29 cells was observed using confocal laser fluorescence microscopy. For photodynamic treatment, HT-29 cells were incubated with PaH and then irradiated by visible light (470nm) from a LED light source. Photocytotoxicity was investigated 24h after photodynamic treatment using MTT assay. Cell apoptosis was observed 18h after photodynamic treatment using a flow cytometry with Annexin V/PI staining. Results showed that PaH has an absorption peak in the visible region from 400nm to 500nm and a fluorescence emission peak at 406nm with an excitation wavelength of 365nm. PaH was activated by the 470nm visible light from a LED light source to produce (1)O2. Dark toxicity showed that PaH alone treatment had no cytotoxicity to HT-29 cancer cells and NIH-3T3 normal cells after incubation for 24h. After incubation for 40min, the cellular uptake of PaH reached to the maximum and PaH was located in mitochondria. Photodynamic treatment of PaH demonstrated a significant photocytotoxicity on HT-29 cells. The rate of cell death increased significantly in a PaH concentration-dependent and light dose-dependent manner. Further evaluation revealed that the early and late apoptotic rate of HT-29 cells increased remarkably up to 21.54% and 5.39% after photodynamic treatment of PaH at the concentration of 5μM and energy density of 10.8J/cm(2). Our findings demonstrated that PaH as a naturally occurring photosensitizer has potential in photodynamic therapy on colon adenocarcinoma.
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Affiliation(s)
- Juan Wu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China; Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao, PR China
| | - Qicai Xiao
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Na Zhang
- Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao, PR China
| | - Changhu Xue
- Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao, PR China
| | - Albert Wingnang Leung
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Hongwei Zhang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Chuanshan Xu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
| | - Qing-Juan Tang
- Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao, PR China.
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Existence of hydroxylated MWCNTs demotes the catalysis effect of amylases against starch degradation. Int J Biol Macromol 2016; 86:250-61. [PMID: 26812109 DOI: 10.1016/j.ijbiomac.2016.01.071] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 01/20/2016] [Accepted: 01/21/2016] [Indexed: 11/22/2022]
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Analysis of aceclofenac and bovine serum albumin interaction using fluorescence quenching method for predictive, preventive, and personalized medicine. EPMA J 2015; 6:24. [PMID: 26668672 PMCID: PMC4677438 DOI: 10.1186/s13167-015-0047-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 12/03/2015] [Indexed: 11/10/2022]
Abstract
Background The study of the interaction of a drug with plasma protein is very important because drug-protein binding plays an important role in determination of pharmacological and toxicological properties of drugs. Our study was designed to investigate the interaction between aceclofenac and bovine serum albumin (BSA) using fluorescence spectroscopy at different temperatures (298 and 308 K). Methods Fluorescence spectroscopy was used to carry out the study. Fluorescence quenching constant was determined from Stern-Volmer equation. Van’t Hoff equation was used to determine the thermodynamic parameters such as free energy (ΔG), enthalpy (ΔH), and entropy (ΔS). Results The experimental data showed that the quenching of BSA by aceclofenac was due to a formation of a BSA-aceclofenac complex with probable involvement of both tryptophan and tyrosine residues of BSA. Dynamic quenching was shown for BSA by aceclofenac at the experimental conditions. The values of thermodynamic parameters indicated that the hydrophobic forces played major roles for BSA-aceclofenac complexation. The binding number (n) was found to be ≈1 indicating that 1 mol of BSA bound with 1 mol of aceclofenac. The binding affinity of aceclofenac to BSA was calculated at different temperatures. It was shown that the binding constant decreased with increasing temperatures indicating that stability of the BSA-aceclofenac complex decreased with increasing temperatures. Conclusions The interaction of aceclofenac with BSA was successfully explored using a fluorescence spectroscopic technique.
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Khan AY, Suresh Kumar G. Natural isoquinoline alkaloids: binding aspects to functional proteins, serum albumins, hemoglobin, and lysozyme. Biophys Rev 2015; 7:407-420. [PMID: 28510102 DOI: 10.1007/s12551-015-0183-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 10/19/2015] [Indexed: 02/04/2023] Open
Abstract
The putative anticancer alkaloids berberine, palmatine, jatrorrhizine, and sanguinarine are known to bind to nucleic acids. To develop them as potential drugs for therapeutic use, their binding affinity to functional proteins and mode of transport in the circulatory system need to be clearly understood. Towards this, many studies on their binding aspects to proteins have been reported and a considerable amount of data, mostly of biophysical nature, exists in the literature. The importance of these natural isoquinoline alkaloids and the recent literature on their interaction phenomena with functional proteins, serum albumins, hemoglobin, and lysozyme are presented in this review.
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Affiliation(s)
- Asma Yasmeen Khan
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700 032, India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700 032, India.
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25
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Ariga GG, Naik PN, Nandibewoor ST, Chimatadar SA. Study of fluorescence interaction and conformational changes of bovine serum albumin with histamine H1-receptor-drug epinastine hydrochloride by spectroscopic and time-resolved fluorescence methods. Biopolymers 2015. [DOI: 10.1002/bip.22707] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Girish G. Ariga
- P.G. Department of Studies in Chemistry; Karnatak University Dharwad; Pavate Nagar Dharwad 580003 Karnataka India
| | - Praveen N. Naik
- P.G. Department of Studies in Chemistry; Karnatak University Dharwad; Pavate Nagar Dharwad 580003 Karnataka India
| | - Sharanappa T. Nandibewoor
- P.G. Department of Studies in Chemistry; Karnatak University Dharwad; Pavate Nagar Dharwad 580003 Karnataka India
| | - Shivamurti A. Chimatadar
- P.G. Department of Studies in Chemistry; Karnatak University Dharwad; Pavate Nagar Dharwad 580003 Karnataka India
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26
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Yang Y, Li D, Xu C. Influences of urea, pH and metal ions on the interaction between cepharanthine and lysozyme by steady state fluorescence spectroscopy. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.12.060] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Sun J, Huang Y, Zheng C, Zhou Y, Liu Y, Liu J. Ruthenium (II) complexes interact with human serum albumin and induce apoptosis of tumor cells. Biol Trace Elem Res 2015; 163:266-74. [PMID: 25398541 DOI: 10.1007/s12011-014-0165-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 10/24/2014] [Indexed: 10/24/2022]
Abstract
The interaction of ruthenium (II) complex [Ru(bpy)2(mal)](2+) (RBM) and [Ru(phen)2(mal)](2+) (RPM) (bpy = 2, 2-bipyridine, phen = 1,10-phenanthroline, mal = malonyl carboxylate) with human serum albumin (HSA) has been investigated by using fluorescence, UV absorption and circular dichroism (CD) spectroscopy approaches. A strong fluorescence quenching reaction of complexes to HSA was observed and the quenching mechanism was suggested as static quenching according to the Stern-Volmer (S-V) equation. The number of binding sites n and observed binding constant Kb was measured by fluorescence quenching method. The thermodynamic parameters ΔH, ΔS, and ΔG at different temperatures were calculated and the results indicate the binding reaction is mainly entropy-driven and Vander Waals force played a major role in the reaction. The result of CD showed that the secondary structure of HSA molecules was changed in the presence of the ruthenium (II) complexes. Furthermore, the cell viability of ruthenium (II) complexes was evaluated by MTT and complex RPM has shown significant higher anticancer potency than RBM against all the cell lines screened. RPM showed a significant antitumor activity through induction of apoptosis in A549 cells.
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Affiliation(s)
- Jing Sun
- Department of Chemistry, Jinan University, Guangzhou, 510632, People's Republic of China
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Kaur G, Tripathi SK. Investigation of trypsin-CdSe quantum dot interactions via spectroscopic methods and effects on enzymatic activity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 134:173-183. [PMID: 25011044 DOI: 10.1016/j.saa.2014.05.064] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 04/21/2014] [Accepted: 05/16/2014] [Indexed: 06/03/2023]
Abstract
The paper presents the interactions between trypsin and water soluble cadmium selenide (CdSe) quantum dots investigated by spectrophotometric methods. CdSe quantum dots have strong ability to quench the intrinsic fluorescence of trypsin by a static quenching mechanism. The quenching has been studied at three different temperatures where the results revealed that electrostatic interactions exist between CdSe quantum dots and trypsin and are responsible to stabilize the complex. The Scatchard plot from quenching revealed 1 binding site for quantum dots by trypsin, the same has been confirmed by making isothermal titrations of quantum dots against trypsin. The distance between donor and acceptor for trypsin-CdSe quantum dot complexes is calculated to be 2.8 nm by energy transfer mechanisms. The intrinsic fluorescence of CdSe quantum dots has also been enhanced by the trypsin, and is linear for concentration of trypsin ranging 1-80 μl. All the observations evidence the formation of trypsin-CdSe quantum dot conjugates, where trypsin retains the enzymatic activity which in turn is temperature and pH dependent.
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Affiliation(s)
- Gurvir Kaur
- Centre of Advanced Study in Physics, Department of Physics, Panjab University, Chandigarh 160014, India
| | - S K Tripathi
- Centre of Advanced Study in Physics, Department of Physics, Panjab University, Chandigarh 160014, India.
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Chaturvedi SK, Ahmad E, Khan JM, Alam P, Ishtikhar M, Khan RH. Elucidating the interaction of limonene with bovine serum albumin: a multi-technique approach. MOLECULAR BIOSYSTEMS 2015; 11:307-16. [DOI: 10.1039/c4mb00548a] [Citation(s) in RCA: 191] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mechanistic insight into the BSA–limonene interaction: biophysical and molecular docking approach.
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Affiliation(s)
| | - Ejaz Ahmad
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Javed Masood Khan
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Mohd Ishtikhar
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh 202002
- India
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Stojanović SD, Janković SM, Matović ZD, Jakovljević IŽ, Jelić RM. Interaction between tigecycline and human serum albumin in aqueous solution. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1330-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Asadi M, Asadi Z, Zarei L, Sadi SB, Amirghofran Z. Affinity to bovine serum albumin and anticancer activity of some new water-soluble metal Schiff base complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 133:697-706. [PMID: 24996211 DOI: 10.1016/j.saa.2014.05.031] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 05/09/2014] [Accepted: 05/14/2014] [Indexed: 06/03/2023]
Abstract
Metal Schiff-base complexes show biological activity but they are usually insoluble in water so four new water-soluble metal Schiff base complexes of Na2[M(5-SO3-1,2-salben]; (5-SO3-1,2-salben denoted N,N'-bis(5-sulphosalicyliden)-1,2-diaminobenzylamine and M=Mg, Mn, Cu, Zn) were synthesized and characterized. The formation constants of the metal complexes were determined by UV-Vis absorption spectroscopy. The interaction of these complexes with bovine serum albumin (BSA) was studied by fluorescence spectroscopy. Type of quenching, binding constants, number of binding sites and binding stoichiometries were determined by fluorescence quenching method. The results showed that the mentioned complexes strongly bound to BSA. Thermodynamic parameters indicated that hydrophobic association was the major binding force and that the interaction was entropy driven and enthalpically disfavoured. The displacement experiment showed that these complexes could bind to the subdomain IIA (site I) of albumin. Furthermore the synchronous fluorescence spectra showed that the microenvironment of the tryptophan residues was not apparently changed. Based on the Förster theory of non-radiation energy transfer, the distance between the donor (Trp residues) and the acceptor metal complexes was obtained. The growth inhibitory effect of complexes toward the K562 cancer cell line was measured.
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Affiliation(s)
- Mozaffar Asadi
- Chemistry Department, College of Sciences, Shiraz University, Shiraz 71454, Islamic Republic of Iran.
| | - Zahra Asadi
- Chemistry Department, College of Sciences, Shiraz University, Shiraz 71454, Islamic Republic of Iran
| | - Leila Zarei
- Chemistry Department, College of Sciences, Shiraz University, Shiraz 71454, Islamic Republic of Iran
| | - Somaye Barzegar Sadi
- Chemistry Department, College of Sciences, Shiraz University, Shiraz 71454, Islamic Republic of Iran
| | - Zahra Amirghofran
- Immunology Department, Shiraz University of Medical Sciences, Shiraz 71454, Islamic Republic of Iran
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32
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Li D, Zhang T, Ji B. Influences of pH, urea and metal ions on the interaction of sinomenine with Lysozyme by steady state fluorescence spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 130:440-6. [PMID: 24813272 DOI: 10.1016/j.saa.2014.04.054] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 04/04/2014] [Accepted: 04/07/2014] [Indexed: 05/10/2023]
Abstract
The interaction between sinomenine and Lysozyme (Lys) in aqueous solution has been systemically investigated by fluorescence spectroscopic techniques at pH 7.4. The quenching rate constants and binding constants calculated indicated the static quenching mechanism and medium binding force. The effect of sinomenine on the conformation of Lys was analyzed using synchronous fluorescence and three-dimensional (3D) fluorescence. In addition, influence of pH on the binding of sinomenine to Lys was investigated and the binding ability of the drug to Lys deceased under other pH conditions (pH 9.0, 3.5, and 1.9) as compared with that at pH 7.4. As compared with the binding ability of sinomenine to native Lys, that of sinomenine to denatured Lys deceases dramatically. Furthermore, the effect of many metal ions on the binding constant of sinomenine with Lys was investigated.
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Affiliation(s)
- Daojin Li
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China.
| | - Tian Zhang
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China
| | - Baoming Ji
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China
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Probing the Binding of 4β-(Benzoyl-thioureido)-4-deoxypodophyllotoxin to Human Serum Albumin by Molecular Spectroscopy. J SOLUTION CHEM 2014. [DOI: 10.1007/s10953-014-0212-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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34
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Zeng HJ, Yang R, Zhang Y, Li JJ, Qu LB. Capillary electrophoresis coupled with electrochemiluminescence for determination of atomoxetine hydrochloride and the study on its interactions with three proteins. LUMINESCENCE 2014; 30:124-30. [DOI: 10.1002/bio.2700] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/27/2014] [Accepted: 04/04/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Hua-jin Zeng
- School of Pharmaceutical Sciences; Zhengzhou University; Zhengzhou 450001 China
| | - Ran Yang
- Department of Chemistry; Zhengzhou University; Zhengzhou 450001 China
| | - Ying Zhang
- Department of Chemistry; Zhengzhou University; Zhengzhou 450001 China
| | - Jian-jun Li
- Department of Chemistry; Zhengzhou University; Zhengzhou 450001 China
| | - Ling-bo Qu
- Department of Chemistry; Zhengzhou University; Zhengzhou 450001 China
- College of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
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Tan K, Li J, Li H, Wang Y, Yuan R. A highly sensitive dual-readout assay based on poly(A) and gold nanoparticles for palmatine hydrochloride. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 122:198-203. [PMID: 24316533 DOI: 10.1016/j.saa.2013.11.075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 11/08/2013] [Accepted: 11/12/2013] [Indexed: 06/02/2023]
Abstract
This report presents a highly sensitive, poly(A)-stabilized gold nanoparticle-based assay with dual readouts (resonance light scattering and colorimetric) for detecting palmatine hydrochloride (PaH) in real samples. The detection mechanism is based on the fact that palmatine hydrochloride has strong affinity to poly(A), which can stabilize gold nanoparticles at high ionic strength, and cause the aggregation of poly(A)-stabilized AuNPs, resulting in the enhanced resonance light scattering (RLS). At the same time, the color change of poly(A)-stabilized AuNPs solution is from red to blue via purple. Thus a highly sensitive RLS assay for PaH has been developed with a linear range of 0.023-2.5 μg/mL. The limit of detection (LOD, 3σ) is 2.3 ng/mL. In this work, the reaction mechanism of this system was investigated by scanning electron microscope (SEM), dark-field light scattering images (DLSI), dynamiclight scattering (DLS) and circular dichroism (CD). This proposed method was also applied successfully for the determination of PaH in pharmaceutical preparations and urine samples with RSD⩽4.0%. The results are in good agreement with those from the official method.
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Affiliation(s)
- Kejun Tan
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Jiayu Li
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Huachun Li
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yingying Wang
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Rui Yuan
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
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Gökoğlu E, Kıpçak F, Seferoğlu Z. Studies on the interactions of 3,6-diaminoacridine derivatives with human serum albumin by fluorescence spectroscopy. LUMINESCENCE 2014; 29:872-7. [PMID: 24616283 DOI: 10.1002/bio.2635] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 10/07/2013] [Accepted: 12/13/2013] [Indexed: 12/21/2022]
Abstract
This study reports the preparation and investigation of the modes of binding of the two symmetric 3,6-diaminoacridine derivatives obtained from proflavine, which are 3,6-diphenoxycarbonyl aminoacridine and 3,6-diethoxycarbonyl aminoacridine to human serum albumin (HSA). The interaction of HSA with the derivatives was investigated using fluorescence quenching and ultraviolet-visible absorption spectra at pH 7.2 and different temperatures. The results suggest that the derivatives used can interact strongly with HSA and are the formation of HSA-derivative complexes and hydrophobic interactions as the predominant intermolecular forces in stabilizing for each complex. The Stern-Volmer quenching constants, binding constants, binding sites and corresponding thermodynamic parameters ΔH, ΔS and ΔG were calculated at different temperatures. The binding distance (r) ~ 3 nm between the donor (HSA) and acceptors (3,6-diethoxycarbonyl aminoacridine, 3,6-diphenoxycarbonyl aminoacridine and proflavine) was obtained according to Förster's non-radiative energy transfer theory. Moreover, the limit of detection and limit of quantification of derivatives were calculated in the presence of albumin.
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Affiliation(s)
- Elmas Gökoğlu
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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He W, Dou H, Zhang L, Wang L, Wang R, Chang J. Spectroscopic study on the interaction of Trypsin with Bicyclol and analogs. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:510-519. [PMID: 24084479 DOI: 10.1016/j.saa.2013.09.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 08/22/2013] [Accepted: 09/02/2013] [Indexed: 06/02/2023]
Abstract
The interactions between Trypsin and Bicyclol or analogs (Bifendate, I, II and III) were investigated by spectrophotometric methods. It was found that Bicyclol or analogs had strong ability to quench the intrinsic fluorescence of Trypsin by a static quenching procedure. The binding constants were obtained at three temperatures. The thermodynamics parameters reveal that the hydrophobic and electrostatic interactions play an important role in the interaction. Results showed that the microenvironments of tryptophan residue of Trypsin were disturbed by the analogs. Results indicated that Bifendate was the strongest quencher among five compounds.
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Affiliation(s)
- Wu He
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
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Marszalek M, Konarska A, Szajdzinska-Pietek E, Wolszczak M. Interaction of Cationic Protoberberine Alkaloids with Human Serum Albumin. No Spectroscopic Evidence on Binding to Sudlow’s Site 1. J Phys Chem B 2013; 117:15987-93. [DOI: 10.1021/jp408827b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Milena Marszalek
- Institute of Applied Radiation
Chemistry, Lodz University of Technology, Wroblewskiego 15, 93-590 Lodz, Poland
| | - Anna Konarska
- Institute of Applied Radiation
Chemistry, Lodz University of Technology, Wroblewskiego 15, 93-590 Lodz, Poland
| | - Ewa Szajdzinska-Pietek
- Institute of Applied Radiation
Chemistry, Lodz University of Technology, Wroblewskiego 15, 93-590 Lodz, Poland
| | - Marian Wolszczak
- Institute of Applied Radiation
Chemistry, Lodz University of Technology, Wroblewskiego 15, 93-590 Lodz, Poland
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Zhang T, Li D. Influences of urea and pH on the interaction of cinchonidine with bovine serum albumin by steady state fluorescence spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 112:15-20. [PMID: 23651774 DOI: 10.1016/j.saa.2013.04.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 03/15/2013] [Accepted: 04/02/2013] [Indexed: 06/02/2023]
Abstract
The binding of cinchonidine to bovine serum albumin (BSA) in aqueous solution in the absence and presence of urea has been studied by fluorescence spectroscopic techniques at pH 7.40. Denaturation of BSA in the presence of urea is almost complete at [urea] ≥8.0 M. Upon unfolding, two fluorescence peaks of BSA were observed. One peak was assigned to the fluorescence of Trp residue in a polar environment, and the other peak was assigned to the fluorescence of Tyr residues. In addition, the fluorescence quenching effects of cinchonidine were shown not only on the native but also on the unfolded form of BSA. The quenching rate constants and binding constants calculated in the absence and presence of the denaturant urea indicates that the binding capacity of cinchonidine to the denatured BSA deceases dramatically. In addition, influence of pH on the interaction between cinchonidine and BSA was investigated and the binding abilities of the drug to BSA deceased under lower pH conditions (pH 3.5 and 1.8) and higher pH conditions (pH 9.0).
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Affiliation(s)
- Tian Zhang
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China
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Characterization of the Binding of Metoprolol Tartrate and Guaifenesin Drugs to Human Serum Albumin and Human Hemoglobin Proteins by Fluorescence and Circular Dichroism Spectroscopy. J Fluoresc 2013; 23:659-69. [DOI: 10.1007/s10895-013-1177-y] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 02/24/2013] [Indexed: 12/11/2022]
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Tunç S, Çetinkaya A, Duman O. Spectroscopic investigations of the interactions of tramadol hydrochloride and 5-azacytidine drugs with human serum albumin and human hemoglobin proteins. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 120:59-65. [DOI: 10.1016/j.jphotobiol.2013.01.011] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 01/19/2013] [Accepted: 01/23/2013] [Indexed: 11/24/2022]
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Yu X, Yao Q, Tao H, Yang Y, Li L, Li X, Zhu S. Spectroscopic studies on the interaction of BSA and 5-spiro-3'-piperidine-2″-spiro-3″-indole-4',2″-diones. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 104:519-526. [PMID: 23291115 DOI: 10.1016/j.saa.2012.11.095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Revised: 11/25/2012] [Accepted: 11/27/2012] [Indexed: 06/01/2023]
Abstract
The interaction of 5-spiro-3'-piperidine-2″-spiro-3″-indole-4',2″-diones (SPSDs), an anti-tumor drug, to bovine serum albumin (BSA) in aqueous solution has been investigated by fluorescence spectra and ultraviolet-visible (UV-vis) spectra at pH 7.40. We have studied the effect of four substituents on the SPSD for the first time. The results of fluorescence titration indicated that SPSD can quench the intrinsic fluorescence of BSA and the quenching mechanism has been analyzed. The binding sites number (n), the binding constant (K(A)) and the spatial-distance (r) of SPSD with BSA without or with substituents on the benzene ring at 302 and 310 K have been calculated. The results show that the presence of the substituents increased the binding constant and changed the binding distance between the acceptor and the donor, which possibly results from the formation of SPSD-BSA complex. We have investigated the possible sub-domain on BSA where bind SPSD by displacement experiments. The effect of SPSD on the conformation of BSA has also been analyzed using synchronous fluorescence under experimental conditions.
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Affiliation(s)
- Xianyong Yu
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, People's Republic of China.
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Wang R, Zhang L, Wang R, Dou H, Li H, Wang Y, Pu J, Wang R. Spectroscopic study on the interaction of catalase with bifendate and analogs. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 102:88-98. [PMID: 23220523 DOI: 10.1016/j.saa.2012.10.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 10/13/2012] [Accepted: 10/23/2012] [Indexed: 06/01/2023]
Abstract
The interactions of bifendate (DDB) or analogs (Bicyclol, I, II and III) with catalase are analyzed by spectrophotometric methods. The fluorescence spectra results show the intrinsic fluorescence of catalase is strongly quenched by DDB or analogs with a static quenching procedure. The binding constants are obtained at three temperatures. The thermodynamics parameters (ΔH, ΔS, ΔG) indicate the hydrophobic and electrostatic interactions play a major role in the interaction. The results of synchronous fluorescence, UV-vis absorption and three-dimensional fluorescence spectra demonstrate that the microenvironments of Trp residue of catalase are disturbed by the analogs. Thermodynamic results showed that DDB is the strongest quencher and bind to catalase with the highest affinity among five compounds.
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Affiliation(s)
- Ruiqiang Wang
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Investigation of binding properties of umbelliferone (7hydroxycoumarin) to lysozyme. J Fluoresc 2012; 23:333-8. [PMID: 23224618 DOI: 10.1007/s10895-012-1151-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 11/20/2012] [Indexed: 10/27/2022]
Abstract
The binding interaction of lysozyme and umbelliferone (7hydroxcoumarin, 7HC) was investigated by UV-vis absorption and fluorescence quenching. It was obtained from fluorescence spectra that the fluorescence quenching of lysozyme by 7HC was probably a result of the formation of lysozyme-7HC complex and binding parameters were determined according to the Stern-Volmer equation. The effects of various common metal ions on the binding were also studied. The thermodynamic parameters were calculated at different temperatures which indicated that hydrophobic interaction. The binding distance (r) between the donor (lysozyme) and the acceptor (7HC) was 3.81 nm based on the Förster theory of non-radioactive resonance energy transfer.
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Khan AY, Hossain M, Kumar GS. Binding of plant alkaloids berberine and palmatine to serum albumins: a thermodynamic investigation. Mol Biol Rep 2012; 40:553-66. [DOI: 10.1007/s11033-012-2092-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Accepted: 10/03/2012] [Indexed: 01/29/2023]
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46
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Ma BL, Ma YM. Pharmacokinetic properties, potential herb–drug interactions and acute toxicity of oralRhizoma coptidisalkaloids. Expert Opin Drug Metab Toxicol 2012; 9:51-61. [DOI: 10.1517/17425255.2012.722995] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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47
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Liu YF, Xia HT, Rong DF. Crystal structure and interaction with bovine serum albumin of the Cu(I/II) complex [C20H32Cu2I3N4] n. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.706282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Yu-Fen Liu
- a School of Chemical Engineering, Huaihai Institute of Technology , Lianyungang , Jiangsu , China
| | - Hai-Tao Xia
- a School of Chemical Engineering, Huaihai Institute of Technology , Lianyungang , Jiangsu , China
| | - De-Fu Rong
- b Beilun Entry-Exit Inspection and Quarantine Bureau of China , Ningbo , Zhejiang , China
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Evaluation of solute binding to proteins and intra-protein distances from steady state fluorescence measurements. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 106:1-17. [DOI: 10.1016/j.jphotobiol.2011.11.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 11/01/2011] [Accepted: 11/07/2011] [Indexed: 12/28/2022]
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49
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Krishnamoorthy P, Sathyadevi P, Butorac RR, Cowley AH, Bhuvanesh NSP, Dharmaraj N. Copper(i) and nickel(ii) complexes with 1 : 1 vs. 1 : 2 coordination of ferrocenyl hydrazone ligands: Do the geometry and composition of complexes affect DNA binding/cleavage, protein binding, antioxidant and cytotoxic activities? Dalton Trans 2012; 41:4423-36. [DOI: 10.1039/c2dt11938b] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Chen T, Cao H, Zhu S, Lu Y, Shang Y, Wang M, Tang Y, Zhu L. Investigation of the binding of Salvianolic acid B to human serum albumin and the effect of metal ions on the binding. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 81:645-652. [PMID: 21782496 DOI: 10.1016/j.saa.2011.06.068] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 06/19/2011] [Accepted: 06/26/2011] [Indexed: 05/31/2023]
Abstract
The studies on the interaction between HSA and drugs have been an interesting research field in life science, chemistry and clinical medicine. There are also many metal ions present in blood plasma, thus the research about the effect of metal ions on the interaction between drugs and plasma proteins is crucial. In this study, the interaction of Salvianolic acid B (Sal B) with human serum albumin (HSA) was investigated by the steady-state, synchronous fluorescence and circular dichroism (CD) spectroscopies. The results showed that Sal B had a strong ability to quench the intrinsic fluorescence of HSA through a static quenching mechanism. Binding parameters calculated showed that Sal B was bound to HSA with the binding affinities of 10(5) L mol(-1). The thermodynamic parameters studies revealed that the binding was characterized by positive enthalpy and positive entropy changes, and hydrophobic interactions were the predominant intermolecular forces to stabilize the complex. The specific binding distance r (2.93 nm) between donor (HSA) and acceptor (Sal B) was obtained according to Förster non-radiative resonance energy transfer theory. The synchronous fluorescence experiment revealed that Sal B cannot lead to the microenvironmental changes around the Tyr and Trp residues of HSA, and the binding site of Sal B on HSA is located in hydrophobic cavity of subdomain IIA. The CD spectroscopy indicated the secondary structure of HSA is not changed in the presence of Sal B. Furthermore, The effect of metal ions (e.g. Zn(2+), Cu(2+), Co(2+), Ni(2+), Fe(3+)) on the binding constant of Sal B-HSA complex was also discussed.
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Affiliation(s)
- Tingting Chen
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China
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