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Maniewska J, Gąsiorowska J, Czyżnikowska Ż, Michalak K, Szczęśniak-Sięga BM. New Meloxicam Derivatives-Synthesis and Interaction with Phospholipid Bilayers Measured by Differential Scanning Calorimetry and Fluorescence Spectroscopy. MEMBRANES 2023; 13:416. [PMID: 37103843 PMCID: PMC10145084 DOI: 10.3390/membranes13040416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
The purpose of the present paper was to assess the ability of five newly designed and synthesized meloxicam analogues to interact with phospholipid bilayers. Calorimetric and fluorescence spectroscopic measurements revealed that, depending on the details of the chemical structure, the studied compounds penetrated bilayers and affected mainly their polar/apolar regions, closer to the surface of the model membrane. The influence of meloxicam analogues on the thermotropic properties of DPPC bilayers was clearly visible because these compounds reduced the temperature and cooperativity of the main phospholipid phase transition. Additionally, the studied compounds quenched the fluorescence of prodan to a higher extent than laurdan, what pointed to a more pronounced interaction with membrane segments close to its surface. We presume that a more pronounced intercalation of the studied compounds into the phospholipid bilayer may be related to the presence of the molecule of a two-carbon aliphatic linker with a carbonyl group and fluorine substituent/trifluoromethyl group (compounds PR25 and PR49) or the three-carbon linker together with the trifluoromethyl group (PR50). Moreover, computational investigations of the ADMET properties have shown that the new meloxicam analogues are characterized by beneficial expected physicochemical parameters, so we may presume that they will have a good bioavailability after an oral administration.
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Affiliation(s)
- Jadwiga Maniewska
- Department of Medicinal Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland
| | - Justyna Gąsiorowska
- Department of Biophysics and Neuroscience, Wroclaw Medical University, T. Chałubińskiego 3a, 50-368 Wrocław, Poland
| | - Żaneta Czyżnikowska
- Department of Basic Chemical Sciences, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211a, 50-556 Wrocław, Poland
| | - Krystyna Michalak
- Department of Biophysics and Neuroscience, Wroclaw Medical University, T. Chałubińskiego 3a, 50-368 Wrocław, Poland
| | - Berenika M. Szczęśniak-Sięga
- Department of Medicinal Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland
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Marquezin CA, Lamy MT, de Souza ES. Molecular collisions or resonance energy transfer in lipid vesicles? A methodology to tackle this question. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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3
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Andrade S, Ramalho MJ, Loureiro JA, Pereira MC. Liposomes as biomembrane models: Biophysical techniques for drug-membrane interaction studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116141] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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4
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Almeida A, Fernandes E, Sarmento B, Lúcio M. A Biophysical Insight of Camptothecin Biodistribution: Towards a Molecular Understanding of Its Pharmacokinetic Issues. Pharmaceutics 2021; 13:pharmaceutics13060869. [PMID: 34204692 PMCID: PMC8231504 DOI: 10.3390/pharmaceutics13060869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 05/27/2021] [Accepted: 06/04/2021] [Indexed: 12/02/2022] Open
Abstract
Camptothecin (CPT) is a potent anticancer drug, and its putative oral administration is envisioned although difficult due to physiological barriers that must be overcome. A comprehensive biophysical analysis of CPT interaction with biointerface models can be used to predict some pharmacokinetic issues after oral administration of this or other drugs. To that end, different models were used to mimic the phospholipid composition of normal, cancer, and blood–brain barrier endothelial cell membranes. The logD values obtained indicate that the drug is well distributed across membranes. CPT-membrane interaction studies also confirm the drug’s location at the membrane cooperative and interfacial regions. The drug can also permeate membranes at more ordered phases by altering phospholipid packing. The similar logD values obtained in membrane models mimicking cancer or normal cells imply that CPT has limited selectivity to its target. Furthermore, CPT binds strongly to serum albumin, leaving only 8.05% of free drug available to be distributed to the tissues. The strong interaction with plasma proteins, allied to the large distribution (VDSS = 5.75 ± 0.932 L·Kg−1) and tendency to bioaccumulate in off-target tissues, were predicted to be pharmacokinetic issues of CPT, implying the need to develop drug delivery systems to improve its biodistribution.
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Affiliation(s)
- Andreia Almeida
- INEB—Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (A.A.); (B.S.)
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Eduarda Fernandes
- CF-UM-UP, Centro de Física das Universidades do Minho e Porto, Departamento de Física da Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal;
| | - Bruno Sarmento
- INEB—Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (A.A.); (B.S.)
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central da Gandra 137, 4585-116 Gandra, Portugal
| | - Marlene Lúcio
- CF-UM-UP, Centro de Física das Universidades do Minho e Porto, Departamento de Física da Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal;
- CBMA, Centro de Biologia Molecular e Ambiental, Departamento de Biologia, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Correspondence:
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5
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Carvalho AM, Fernandes E, Gonçalves H, Giner-Casares JJ, Bernstorff S, Nieder JB, Real Oliveira MECD, Lúcio M. Prediction of paclitaxel pharmacokinetic based on in vitro studies: Interaction with membrane models and human serum albumin. Int J Pharm 2020; 580:119222. [PMID: 32194209 DOI: 10.1016/j.ijpharm.2020.119222] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 03/07/2020] [Accepted: 03/09/2020] [Indexed: 01/10/2023]
Abstract
Interactions of paclitaxel (PTX) with models mimicking biological interfaces (lipid membranes and serum albumin, HSA) were investigated to test the hypothesis that the set of in vitro assays proposed can be used to predict some aspects of drug pharmacokinetics (PK). PTX membrane partitioning was studied by derivative spectrophotometry; PTX effect on membrane biophysics was evaluated by dynamic light scattering, fluorescence anisotropy, atomic force microscopy and synchrotron small/wide-angle X-ray scattering; PTX distribution/molecular orientation in membranes was assessed by steady-state/time-resolved fluorescence and computer simulations. PTX binding to HSA was studied by fluorescence quenching, derivative spectrophotometry and dynamic/electrophoretic light scattering. PTX high membrane partitioning is consistent with its efficacy crossing cellular membranes and its off-target distribution. PTX is closely located in the membrane phospholipids headgroups, also interacting with the hydrophobic chains, and causes a major distortion of the alignment of the membrane phospholipids, which, together with its fluidizing effect, justifies some of its cellular toxic effects. PTX binds strongly to HSA, which is consistent with its reduced distribution in target tissues and toxicity by bioaccumulation. In conclusion, the described set of biomimetic models and techniques has the potential for early prediction of PK issues, alerting for the required drug optimizations, potentially minimizing the number of animal tests used in the drug development process.
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Affiliation(s)
- Ana M Carvalho
- CF-UM-UP, Centro de Física das Universidades do Minho e Porto, Departamento de Física da Universidade do Minho, Campus of Gualtar, 4710-057 Braga, Portugal; Nanophotonics Department, Ultrafast Bio- and Nanophotonics Group, INL - International Iberian Nanotechnology Laboratory, Braga, Portugal
| | - Eduarda Fernandes
- CF-UM-UP, Centro de Física das Universidades do Minho e Porto, Departamento de Física da Universidade do Minho, Campus of Gualtar, 4710-057 Braga, Portugal
| | | | - Juan J Giner-Casares
- Department of Physical Chemistry and Applied Thermodynamics, University of Córdoba, Campus de Rabanales, Edificio Marie Curie, Córdoba E-14014, Spain.
| | - Sigrid Bernstorff
- Elettra-Sincrotrone Trieste S.C.p.A., Strada Statale 14, km 163.5, in Area Science Park, I-34149 Basovizza, Trieste, Italy.
| | - Jana B Nieder
- Nanophotonics Department, Ultrafast Bio- and Nanophotonics Group, INL - International Iberian Nanotechnology Laboratory, Braga, Portugal.
| | - M Elisabete C D Real Oliveira
- CF-UM-UP, Centro de Física das Universidades do Minho e Porto, Departamento de Física da Universidade do Minho, Campus of Gualtar, 4710-057 Braga, Portugal.
| | - Marlene Lúcio
- CF-UM-UP, Centro de Física das Universidades do Minho e Porto, Departamento de Física da Universidade do Minho, Campus of Gualtar, 4710-057 Braga, Portugal; CBMA, Centro de Biologia Molecular e Ambiental, Departamento de Biologia, Universidade do Minho, 4710-057 Braga, Portugal.
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6
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Sharma V, Mamontov E, Tyagi M. Effects of NSAIDs on the nanoscopic dynamics of lipid membrane. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183100. [DOI: 10.1016/j.bbamem.2019.183100] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/16/2019] [Accepted: 09/19/2019] [Indexed: 01/30/2023]
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7
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Andrade S, Ramalho MJ, Loureiro JA, Pereira MC. Interaction of natural compounds with biomembrane models: A biophysical approach for the Alzheimer's disease therapy. Colloids Surf B Biointerfaces 2019; 180:83-92. [PMID: 31030024 DOI: 10.1016/j.colsurfb.2019.04.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 04/05/2019] [Accepted: 04/09/2019] [Indexed: 11/29/2022]
Abstract
Natural compounds such as caffeine (CA), gallic acid (GA) and tannic acid (TA) have been reported to be useful for Alzheimer's disease (AD) therapy. It was proved that some natural compounds inhibit the formation of senil plaques composed by beta-amyloid peptide (Aβ), a hallmark of AD. Evidences suggest that the therapeutic activity of compounds depends of their interaction with biological membranes. To understand why these compounds fail in vivo and in clinical trials, it is important to evaluate their pharmacokinetics properties. Thus, a biophysical approach to study drug-membrane interactions is essential to understand the mechanisms by which the drugs interact with the cellular membranes and affect the Aβ production, aggregation and clearance pathways. 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) and cholesterol (chol) were used to mimic the biophysical properties of cell membranes and study their interactions with these compounds. The partition coefficient, influence on membrane fluidity and location within the bilayer of the drugs were studied by derivative spectrophotometry, dynamic light scattering and fluorescence quenching, respectively. The results suggest that TA exhibited a significant higher partition than CA and GA and a preferential location near to the polar head of bilayer. The obtained results may explain the therapeutic mechanisms reported for these natural compounds.
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Affiliation(s)
- Stephanie Andrade
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Maria J Ramalho
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Joana A Loureiro
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Maria Carmo Pereira
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
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Ramalho MJ, Andrade S, Coelho MÁN, Loureiro JA, Pereira MC. Biophysical interaction of temozolomide and its active metabolite with biomembrane models: The relevance of drug-membrane interaction for Glioblastoma Multiforme therapy. Eur J Pharm Biopharm 2019; 136:156-163. [PMID: 30682492 DOI: 10.1016/j.ejpb.2019.01.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 01/10/2019] [Accepted: 01/15/2019] [Indexed: 01/27/2023]
Abstract
Temozolomide (TMZ) is the first-line treatment for Glioblastoma Multiforme (GBM). After administration, TMZ is rapidly converted into its active metabolite (MTIC). However, its pharmacological activity is reduced due MTIC low bioavailability in the brain. Since drugs' permeability through biological barriers and tumor cell membranes affects its bioavailability, the ability of MTIC to interact with the biological membranes presents a major contribution on its pharmacological properties and activity. Biomembrane models mimic the physiological conditions, allowing to predict the drug's behavior at biological membranes and its effects on drug biodistribution profiles. In this work, lipid bilayer models using liposomes were applied for the drug-membrane interaction studies. The zwitterionic phospholipid, 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC), and cholesterol were chosen for the composition of the model, since they represent the major components of the membranes of GBM cells and brain capillary endothelial cell. Thus, the molecular interactions between MTIC and these models were studied by the evaluation of the partition of the drug into the phospholipid's membrane, its location within the bilayer and its effect on the fluidity of the membrane. The attained results suggest that the composition of membranes affects drugs partition, showing that drug biodistribution depends not only on its physicochemical features, but also depends on the characteristics of the membrane such as the packing of the lipid molecules. Also, MTIC exhibited low affinity to biological membranes, explaining its low bioavailability on the target cells.
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Affiliation(s)
- Maria João Ramalho
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Stéphanie Andrade
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Manuel Álvaro Neto Coelho
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Joana Angélica Loureiro
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Maria Carmo Pereira
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.
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9
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A Molecular Biophysical Approach to Diclofenac Topical Gastrointestinal Damage. Int J Mol Sci 2018; 19:ijms19113411. [PMID: 30384433 PMCID: PMC6275047 DOI: 10.3390/ijms19113411] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/23/2018] [Accepted: 10/26/2018] [Indexed: 11/17/2022] Open
Abstract
Diclofenac (DCF), the most widely consumed non-steroidal anti-inflammatory drug (NSAID) worldwide, is associated with adverse typical effects, including gastrointestinal (GI) complications. The present study aims to better understand the topical toxicity induced by DCF using membrane models that mimic the physiological, biophysical, and chemical environments of GI mucosa segments. For this purpose, phospholipidic model systems that mimic the GI protective lining and lipid models of the inner mitochondrial membrane were used together with a wide set of techniques: derivative spectrophotometry to evaluate drug distribution at the membrane; steady-state and time-resolved fluorescence to predict drug location at the membrane; fluorescence anisotropy, differential scanning calorimetry (DSC), dynamic light scattering (DLS), and calcein leakage studies to evaluate the drug-induced disturbance on membrane microviscosity and permeability; and small- and wide-angle X-ray scattering studies (SAXS and WAXS, respectively), to evaluate the effects of DCF at the membrane structure. Results demonstrated that DCF interacts chemically with the phospholipids of the GI protective barrier in a pH-dependent manner and confirmed the DCF location at the lipid headgroup region, as well as DCF’s higher distribution at mitochondrial membrane contact points where the impairment of biophysical properties is consistent with the uncoupling effects reported for this drug.
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Pereira-Leite C, Nunes C, Bozelli JC, Schreier S, Kamma-Lorger CS, Cuccovia IM, Reis S. Can NO-indomethacin counteract the topical gastric toxicity induced by indomethacin interactions with phospholipid bilayers? Colloids Surf B Biointerfaces 2018; 169:375-383. [DOI: 10.1016/j.colsurfb.2018.05.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/16/2018] [Accepted: 05/09/2018] [Indexed: 12/18/2022]
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11
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Fernandes E, Soares TB, Gonçalves H, Lúcio M. Spectroscopic Studies as a Toolbox for Biophysical and Chemical Characterization of Lipid-Based Nanotherapeutics. Front Chem 2018; 6:323. [PMID: 30109226 PMCID: PMC6080416 DOI: 10.3389/fchem.2018.00323] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 07/11/2018] [Indexed: 01/22/2023] Open
Abstract
The goal of this study is to provide tools to minimize trial-and-error in the development of novel lipid-based nanotherapeutics, in favor of a rational design process. For this purpose, we present case-study examples of biophysical assays that help addressing issues of lipid-based nanotherapeutics' profiling and assist in the design of lipid nanocarriers for therapeutic usage. The assays presented are rooted in spectroscopic methods (steady-state and time-resolved fluorescence; UV-Vis derivative spectroscopy; fluorescence anisotropy and fluorescence lifetime image microscopy) and allow accessing physical-chemical interactions between drugs and lipid nanocarriers, as well as studying interactions between lipid-based nanotherapeutics and membranes and/or proteins, as this is a key factor in predicting their therapeutic and off target effects. Derivative spectroscopy revealed Naproxen's high distribution (LogD ≈ 3) in different lipid-based nanocarriers (micelles and unilamellar or multilamellar vesicles) confirming the adequacy of such systems for encapsulating this anti-inflammatory drug. Fluorescence quenching studies revealed that the anti-inflammatory drugs Acemetacin and Indomethacin can reach an inner location at the lipid nanocarrier while being anchored with its carboxylic moiety at the polar headgroup. The least observed quenching effect suggested that Tolmetin is probably located at the polar headgroup region of the lipid nanocarriers and this superficial location may translate in a fast drug release from the nanocarriers. Fluorescent anisotropy measurements indicated that the drugs deeply buried within the lipid nanocarrier where the ones that had a greater fluidizing effect which can also translate in a faster drug release. The drug binding strength to serum albumin was also compared for a free drug (Clonixin) or for the same drug after encapsulation in a lipid nanocarrier DSPC:DODAP (2:1). Under both conditions there is a strong binding to serum albumin, at one binding site, suggesting the need to produce a stealth nanosystem. Finally the cellular uptake of lipid nanocarriers loaded with Daunorubicin was investigated in cancer cells using fluorescence lifetime imaging microscopy. From the images obtained it was possible to conclude that even at short incubation times (15 min) there was a distribution of the drug in the cytoplasm, whereas for longer incubation periods (4 h) the drug has reached the nucleus.
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Affiliation(s)
- Eduarda Fernandes
- Department of Physics, Centre of Physics of University of Minho and Porto, University of Minho, Braga, Portugal
| | - Telma B Soares
- Department of Physics, Centre of Physics of University of Minho and Porto, University of Minho, Braga, Portugal
| | - Hugo Gonçalves
- Department of Physics, Centre of Physics of University of Minho and Porto, University of Minho, Braga, Portugal
| | - Marlene Lúcio
- Department of Physics, Centre of Physics of University of Minho and Porto, University of Minho, Braga, Portugal
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12
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Pereira-Leite C, Nunes C, Grahl D, Bozelli JC, Schreier S, Kamma-Lorger CS, Cuccovia IM, Reis S. Acemetacin–phosphatidylcholine interactions are determined by the drug ionization state. Phys Chem Chem Phys 2018; 20:14398-14409. [DOI: 10.1039/c8cp01698d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Complementary biophysical techniques depicted the differential effects of acemetacin ionic forms on phosphatidylcholine bilayers.
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Affiliation(s)
| | - Cláudia Nunes
- LAQV
- REQUIMTE
- Departamento de Ciências Químicas
- Faculdade de Farmácia
- Universidade do Porto
| | - Débora Grahl
- Departamento de Bioquímica
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - José C. Bozelli
- Departamento de Bioquímica
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Shirley Schreier
- Departamento de Bioquímica
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Christina S. Kamma-Lorger
- ALBA Synchrotron
- Consorcio para la Construcción
- Equipamiento y Explotación del Laboratorio de Luz de Sincrotrón (CELLS)
- Barcelona
- Spain
| | - Iolanda M. Cuccovia
- Departamento de Bioquímica
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Salette Reis
- LAQV
- REQUIMTE
- Departamento de Ciências Químicas
- Faculdade de Farmácia
- Universidade do Porto
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13
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Yang S, Ding H, Wang R, Dai X, Shi X, Qiao Y. Molecular dynamics simulation studies of transmembrane transport of chemical components in Chinese herbs and the function of platycodin D in a biological membrane. JOURNAL OF TRADITIONAL CHINESE MEDICAL SCIENCES 2017. [DOI: 10.1016/j.jtcms.2017.09.003] [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] Open
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14
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The Molecular Structure of Human Red Blood Cell Membranes from Highly Oriented, Solid Supported Multi-Lamellar Membranes. Sci Rep 2017; 7:39661. [PMID: 28045119 PMCID: PMC5206716 DOI: 10.1038/srep39661] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 11/24/2016] [Indexed: 12/30/2022] Open
Abstract
We prepared highly oriented, multi-lamellar stacks of human red blood cell (RBC) membranes applied on silicon wafers. RBC ghosts were prepared by hemolysis and applied onto functionalized silicon chips and annealed into multi-lamellar RBC membranes. High resolution X-ray diffraction was used to determine the molecular structure of the stacked membranes. We present direct experimental evidence that these RBC membranes consist of nanometer sized domains of integral coiled-coil peptides, as well as liquid ordered (lo) and liquid disordered (ld) lipids. Lamellar spacings, membrane and hydration water layer thicknesses, areas per lipid tail and domain sizes were determined. The common drug aspirin was added to the RBC membranes and found to interact with RBC membranes and preferably partition in the head group region of the lo domain leading to a fluidification of the membranes, i.e., a thinning of the bilayers and an increase in lipid tail spacing. Our results further support current models of RBC membranes as patchy structures and provide unprecedented structural details of the molecular organization in the different domains.
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15
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Lopes D, Jakobtorweihen S, Nunes C, Sarmento B, Reis S. Shedding light on the puzzle of drug-membrane interactions: Experimental techniques and molecular dynamics simulations. Prog Lipid Res 2017; 65:24-44. [DOI: 10.1016/j.plipres.2016.12.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 11/30/2016] [Accepted: 12/03/2016] [Indexed: 12/20/2022]
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16
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Effect of cis-(Z)-flupentixol on DPPC membranes in the presence and absence of cholesterol. Chem Phys Lipids 2016; 198:61-71. [DOI: 10.1016/j.chemphyslip.2016.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 05/21/2016] [Accepted: 06/02/2016] [Indexed: 12/18/2022]
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17
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Neves AR, Nunes C, Amenitsch H, Reis S. Effects of resveratrol on the structure and fluidity of lipid bilayers: a membrane biophysical study. SOFT MATTER 2016; 12:2118-2126. [PMID: 26745787 DOI: 10.1039/c5sm02905h] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Resveratrol is a natural active compound which has been attracting increasing interest due to its several pharmacological effects in cancer prevention, cardiovascular protection and treatment of neurodegenerative disorders and diabetes. The current work investigates how resveratrol affects membrane order and structure, gathering information determined by X-ray scattering analysis, derivative spectrophotometry, fluorescence quenching and fluorescence anisotropy studies. The results indicate that resveratrol is able to be incorporated into DMPC liposome model systems, either fluidizing or stiffening the bilayer, which largely depends on the membrane fluidity state. These findings suggest that the effects of resveratrol resemble cholesterol action on biological membranes, thereby contributing to the regulation of cell membrane structure and fluidity, which may influence the activity of transmembrane proteins and hence control the cell signaling pathways. The regulation of a number of cellular functions, thus may contribute to the pharmacological and therapeutic activities of this compound, explaining its pleiotropic action.
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Affiliation(s)
- A R Neves
- UCIBIO, REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
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18
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Feruloyl glycerol and 1,3-diferuloyl glycerol antioxidant behavior in phospholipid vesicles. Chem Phys Lipids 2016; 195:1-11. [DOI: 10.1016/j.chemphyslip.2015.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 10/30/2015] [Accepted: 11/01/2015] [Indexed: 11/30/2022]
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19
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Neves AR, Nunes C, Reis S. New Insights on the Biophysical Interaction of Resveratrol with Biomembrane Models: Relevance for Its Biological Effects. J Phys Chem B 2015; 119:11664-72. [PMID: 26237152 DOI: 10.1021/acs.jpcb.5b05419] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Resveratrol has been widely studied because of its pleiotropic effects in cancer therapy, neuroprotection, and cardioprotection. It is believed that the interaction of resveratrol with biological membranes may play a key role in its therapeutic activity. The capacity of resveratrol to partition into lipid bilayers, its possible location within the membrane, and the influence of this compound on the membrane fluidity were investigated using membrane mimetic systems composed of egg l-α-phosphatidylcholine (EPC), cholesterol (CHOL), and sphingomyelin (SM). The results showed that resveratrol has greater affinity for the EPC bilayers than for EPC:CHOL [4:1] and EPC:CHOL:SM [1:1:1] membrane models. The increased difficulty in penetrating tight packed membranes is also demonstrated by fluorescence quenching of probes and by fluorescence anisotropy measurements. Resveratrol may be involved in the regulation of cell membrane fluidity, thereby contributing for cell homeostasis.
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Affiliation(s)
- Ana Rute Neves
- UCIBIO, REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto , Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Cláudia Nunes
- UCIBIO, REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto , Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Salette Reis
- UCIBIO, REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto , Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
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20
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Majumdar A, Kundu D, Sarkar M. Differential Effect of Oxicam Non-Steroidal Anti-Inflammatory Drugs on Membranes and Their Consequence on Membrane Fusion. J Phys Chem B 2015; 119:9627-39. [PMID: 26147344 DOI: 10.1021/acs.jpcb.5b03918] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are the most commonly used analgesics and antipyretics, which form an interesting drug group because of their new and alternate functions. The ability of the NSAIDs belonging to the oxicam chemical group to induce membrane fusion at low physiologically relevant concentrations is a new function that has drawn considerable attention. Membrane fusion is dependent on the interplay of physicochemical properties of both drugs and membranes. Here, we have elucidated the effects of different oxicam drugs, Meloxicam, Piroxicam, Tenoxicam, Lornoxicam, and Isoxicam, on an identical membrane-mimetic system. This highlights only the differential effects of the drugs on drug-membrane interactions, which in turn modulate their role as membrane fusogens. The partitioning behavior and the location of the drugs in dimyristoylphosphatidylcholine vesicles have been studied using second-derivative absorption spectroscopy, fluorescence quenching, steady-state fluorescence anisotropy, and time-resolved fluorescence lifetime measurements. Fusion kinetics has been monitored by fluorescence assays and dynamic light scattering was used to provide a snapshot of the vesicle diameter distribution at different time points. The differential perturbing effect of the drugs on the membrane is dependent both on their partitioning and location. Although partitioning governs the extent of fusion, the location modulates the rates of each step.
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Affiliation(s)
- Anupa Majumdar
- †Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India
| | - Debjyoti Kundu
- ‡Department of Biochemistry, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Munna Sarkar
- †Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India
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Alsop RJ, Toppozini L, Marquardt D, Kučerka N, Harroun TA, Rheinstädter MC. Aspirin inhibits formation of cholesterol rafts in fluid lipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:805-12. [DOI: 10.1016/j.bbamem.2014.11.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 11/18/2014] [Accepted: 11/19/2014] [Indexed: 12/20/2022]
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22
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Majumdar A, Chakraborty S, Sarkar M. Modulation of non steroidal anti-inflammatory drug induced membrane fusion by copper coordination of these drugs: anchoring effect. J Phys Chem B 2014; 118:13785-99. [PMID: 25380501 DOI: 10.1021/jp5086087] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Membrane fusion, an integral event in several biological processes, is characterized by several intermediate steps guided by specific energy barriers. Hence, it requires the aid of fusogens to complete the process. Common fusogens, such as proteins/peptides, have the ability to overcome theses barriers by their conformational reorganization, an advantage not shared by small drug molecules. Hence, drug induced fusion at physiologically relevant drug concentrations is rare and occurs only in the case of the oxicam group of non steroidal anti-inflammatory drugs (NSAIDs). To use drugs to induce and control membrane fusion in various biochemical processes requires the understanding of how different parameters modulate fusion. Also, fusion efficacy needs to be enhanced. Here we have synthesized and used Cu(II) complexes of fusogenic oxicam NSAIDs, Meloxicam and Piroxicam, to induce fusion in model membranes monitored by using DSC, TEM, steady-state, and time-resolved spectroscopy. The ability of the complexes to anchor apposing model membranes to initiate/facilitate fusion has been demonstrated. This results in better fusion efficacy compared to the bare drugs. These complexes can take the fusion to its final step. Unlike other designed membrane anchors, the role of molecular recognition and strength of interaction between molecular partners is obliterated for these preformed Cu(II)-NSAIDs.
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Affiliation(s)
- Anupa Majumdar
- Chemical Sciences Division, Saha Institute of Nuclear Physics , 1/AF, Bidhannagar, Kolkata-700064, India
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23
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Alsop RJ, Barrett MA, Zheng S, Dies H, Rheinstädter MC. Acetylsalicylic acid (ASA) increases the solubility of cholesterol when incorporated in lipid membranes. SOFT MATTER 2014; 10:4275-4286. [PMID: 24789086 DOI: 10.1039/c4sm00372a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Cholesterol has been well established as a mediator of cell membrane fluidity. By interacting with lipid tails, cholesterol causes the membrane tails to be constrained thereby reducing membrane fluidity, well known as the condensation effect. Acetylsalicylic acid (ASA), the main ingredient in aspirin, has recently been shown to increase fluidity in lipid bilayers by primarily interacting with lipid head groups. We used high-resolution X-ray diffraction to study both ASA and cholesterol coexisting in model membranes of dimyristoylphosphatidylcholine (DMPC). While a high cholesterol concentration of 40 mol% cholesterol leads to the formation of immiscible cholesterol bilayers, as was reported previously, increasing the amount of ASA in the membranes between 0 to 12.5 mol% was found to significantly increase the fluidity of the bilayers and dissolve the cholesterol plaques. We, therefore, present experimental evidence for an interaction between cholesterol and ASA on the level of the cell membrane at elevated levels of cholesterol and ASA.
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Affiliation(s)
- Richard J Alsop
- Department of Physics and Astronomy, McMaster University, Hamilton, ON, Canada
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24
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Pinheiro M, Arêde M, Caio JM, Moiteiro C, Lúcio M, Reis S. Drug–membrane interaction studies applied to N′-acetyl-rifabutin. Eur J Pharm Biopharm 2013; 85:597-603. [DOI: 10.1016/j.ejpb.2013.02.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 02/06/2013] [Accepted: 02/28/2013] [Indexed: 12/01/2022]
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25
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Pereira-Leite C, Nunes C, Reis S. Interaction of nonsteroidal anti-inflammatory drugs with membranes: in vitro assessment and relevance for their biological actions. Prog Lipid Res 2013; 52:571-84. [PMID: 23981364 DOI: 10.1016/j.plipres.2013.08.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 08/01/2013] [Accepted: 08/16/2013] [Indexed: 12/12/2022]
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) are among the most commonly used drugs in the world due to their anti-inflammatory, analgesic and antipyretic properties. Nevertheless, the consumption of these drugs is still associated with the occurrence of a wide spectrum of adverse effects. Regarding the major role of membranes in cellular events, the hypothesis that the biological actions of NSAIDs may be related to their effect at the membrane level has triggered the in vitro assessment of NSAIDs-membrane interactions. The use of membrane mimetic models, cell cultures, a wide range of experimental techniques and molecular dynamics simulations has been providing significant information about drugs partition and location within membranes and also about their effect on diverse membrane properties. These studies have indeed been providing evidences that the effect of NSAIDs at membrane level may be an additional mechanism of action and toxicity of NSAIDs. In fact, the pharmacokinetic properties of NSAIDs are closely related to the ability of these drugs to interact and overcome biological membranes. Moreover, the therapeutic actions of NSAIDs may also result from the indirect inhibition of cyclooxygenase due to the disturbing effect of NSAIDs on membrane properties. Furthermore, increasing evidences suggest that the disordering effects of these drugs on membranes may be in the basis of the NSAIDs-induced toxicity in diverse organ systems. Overall, the study of NSAIDs-membrane interactions has proved to be not only important for the better understanding of their pharmacological actions, but also for the rational development of new approaches to overcome NSAIDs adverse effects.
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Affiliation(s)
- Catarina Pereira-Leite
- REQUIMTE, Laboratório de Química Aplicada, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
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26
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In Vitro Assessment of NSAIDs-Membrane Interactions: Significance for Pharmacological Actions. Pharm Res 2013; 30:2097-107. [DOI: 10.1007/s11095-013-1066-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Accepted: 04/19/2013] [Indexed: 10/26/2022]
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27
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Pinheiro M, Arêde M, Nunes C, Caio JM, Moiteiro C, Lúcio M, Reis S. Differential Interactions of Rifabutin with Human and Bacterial Membranes: Implication for Its Therapeutic and Toxic Effects. J Med Chem 2013; 56:417-26. [DOI: 10.1021/jm301116j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Marina Pinheiro
- REQUIMTE,
Departamento de Ciências
Químicas, Faculdade de Farmácia, Universidade do Porto,
Rua de Jorge Viterbo Ferreira no. 228, Porto 4050-313, Portugal
| | - Mariana Arêde
- REQUIMTE,
Departamento de Ciências
Químicas, Faculdade de Farmácia, Universidade do Porto,
Rua de Jorge Viterbo Ferreira no. 228, Porto 4050-313, Portugal
| | - Cláudia Nunes
- REQUIMTE,
Departamento de Ciências
Químicas, Faculdade de Farmácia, Universidade do Porto,
Rua de Jorge Viterbo Ferreira no. 228, Porto 4050-313, Portugal
| | - João M. Caio
- Centro de Química e Bioquímica,
Departamento de Química e Bioquímica, Faculdade de Ciências,
Universidade de Lisboa, Lisboa, Portugal
| | - Cristina Moiteiro
- Centro de Química e Bioquímica,
Departamento de Química e Bioquímica, Faculdade de Ciências,
Universidade de Lisboa, Lisboa, Portugal
| | - Marlene Lúcio
- REQUIMTE,
Departamento de Ciências
Químicas, Faculdade de Farmácia, Universidade do Porto,
Rua de Jorge Viterbo Ferreira no. 228, Porto 4050-313, Portugal
| | - Salette Reis
- REQUIMTE,
Departamento de Ciências
Químicas, Faculdade de Farmácia, Universidade do Porto,
Rua de Jorge Viterbo Ferreira no. 228, Porto 4050-313, Portugal
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28
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Pereira-Leite C, Nunes C, Lima JLFC, Reis S, Lúcio M. Interaction of Celecoxib with Membranes: The Role of Membrane Biophysics on its Therapeutic and Toxic Effects. J Phys Chem B 2012; 116:13608-17. [DOI: 10.1021/jp304037v] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Catarina Pereira-Leite
- REQUIMTE,
Departamento de Ciências Químicas,
Faculdade de Farmácia, Universidade do Porto, Portugal
| | - Cláudia Nunes
- REQUIMTE,
Departamento de Ciências Químicas,
Faculdade de Farmácia, Universidade do Porto, Portugal
| | - José L. F. C. Lima
- REQUIMTE,
Departamento de Ciências Químicas,
Faculdade de Farmácia, Universidade do Porto, Portugal
| | - Salette Reis
- REQUIMTE,
Departamento de Ciências Químicas,
Faculdade de Farmácia, Universidade do Porto, Portugal
| | - Marlene Lúcio
- REQUIMTE,
Departamento de Ciências Químicas,
Faculdade de Farmácia, Universidade do Porto, Portugal
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29
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Paiva JG, Paradiso P, Serro AP, Fernandes A, Saramago B. Interaction of local and general anaesthetics with liposomal membrane models: A QCM-D and DSC study. Colloids Surf B Biointerfaces 2012; 95:65-74. [DOI: 10.1016/j.colsurfb.2012.02.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 02/10/2012] [Accepted: 02/10/2012] [Indexed: 12/14/2022]
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30
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Nunes C, Brezesinski G, Lopes D, Lima JL, Reis S, Lúcio M. Lipid–Drug Interaction: Biophysical Effects of Tolmetin on Membrane Mimetic Systems of Different Dimensionality. J Phys Chem B 2011; 115:12615-23. [DOI: 10.1021/jp206013z] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Cláudia Nunes
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 164, Rua Aníbal Cunha, Porto, Portugal
| | - Gerald Brezesinski
- Max Planck Institute of Colloids and Interfaces, Science Park Golm, Am Mühlenberg 1, D-14476 Potsdam, Germany
| | - Daniela Lopes
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 164, Rua Aníbal Cunha, Porto, Portugal
| | - José L.F.C. Lima
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 164, Rua Aníbal Cunha, Porto, Portugal
| | - Salette Reis
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 164, Rua Aníbal Cunha, Porto, Portugal
| | - Marlene Lúcio
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 164, Rua Aníbal Cunha, Porto, Portugal
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31
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Nimesulide interaction with membrane model systems: Are membrane physical effects involved in nimesulide mitochondrial toxicity? Toxicol In Vitro 2011; 25:1215-23. [DOI: 10.1016/j.tiv.2011.05.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Revised: 05/11/2011] [Accepted: 05/13/2011] [Indexed: 11/22/2022]
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32
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Nunes C, Brezesinski G, Lima JLFC, Reis S, Lúcio M. Synchrotron SAXS and WAXS Study of the Interactions of NSAIDs with Lipid Membranes. J Phys Chem B 2011; 115:8024-32. [DOI: 10.1021/jp2025158] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Cláudia Nunes
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha, Porto, Portugal
| | - Gerald Brezesinski
- Max Planck Institute of Colloids and Interfaces, Science Park Golm, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - José L. F. C. Lima
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha, Porto, Portugal
| | - Salette Reis
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha, Porto, Portugal
| | - Marlene Lúcio
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha, Porto, Portugal
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33
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Interaction of carbonylcyanide p-trifluoromethoxyphenylhydrazone (FCCP) with lipid membrane systems: a biophysical approach with relevance to mitochondrial uncoupling. J Bioenerg Biomembr 2011; 43:287-98. [DOI: 10.1007/s10863-011-9359-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Accepted: 04/24/2011] [Indexed: 10/18/2022]
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34
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Changes in PLA2 activity after interacting with anti-inflammatory drugs and model membranes: evidence for the involvement of tryptophan residues. Chem Phys Lipids 2011; 164:292-9. [DOI: 10.1016/j.chemphyslip.2011.03.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 03/09/2011] [Accepted: 03/11/2011] [Indexed: 11/23/2022]
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35
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High-throughput microplate assay for the determination of drug partition coefficients. Nat Protoc 2010; 5:1823-30. [DOI: 10.1038/nprot.2010.137] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Effects of resveratrol on membrane biophysical properties: relevance for its pharmacological effects. Chem Phys Lipids 2010; 163:747-54. [PMID: 20691168 DOI: 10.1016/j.chemphyslip.2010.07.004] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2010] [Revised: 07/05/2010] [Accepted: 07/22/2010] [Indexed: 01/05/2023]
Abstract
The current study gathers a range of spectrophotometric and spectrofluorimetric techniques to systematically monitor the effects of resveratrol (trans-3,5,4'-trihydrostilbene) on the biophysical properties of membrane model systems consisting of unilamellar liposomes of phosphatidylcholine (DPPC) with the ultimate goal of relating these effects with some of the well documented pharmacological properties of this compound, and clarifying some controversial results reported on the literature. Physiological conditions have been pursued, such as a buffered pH control with adjusted ionic strength similar to the blood plasma conditions (pH 7.4, I=0.1M) and the study at different membrane physical states (gel phase and fluid phase) for the assessment of resveratrol-membrane: aqueous partition coefficient by derivative spectroscopy. Results obtained by fluorescence quenching and anisotropy studies indicate that resveratrol has a membrane fluidizing effect and is able to permeate the membrane even in the gel phase. These results mirror the well described antioxidant effect of resveratrol, since antioxidants have to reach peroxidised rigid membranes and increase membrane fluidity in order to interact more efficiently with lipid radicals in the disordered lipid bilayer. Location of resveratrol pointed also to a membrane distribution that is favourable for scavenging the lipid radicals and was elucidated using probes positioned at different membrane depths suggesting that this compound penetrates into the acyl membrane region but also positions its polar hydroxyl group near the headgroup region of the membrane.
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37
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Powe AM, Das S, Lowry M, El-Zahab B, Fakayode SO, Geng ML, Baker GA, Wang L, McCarroll ME, Patonay G, Li M, Aljarrah M, Neal S, Warner IM. Molecular Fluorescence, Phosphorescence, and Chemiluminescence Spectrometry. Anal Chem 2010; 82:4865-94. [DOI: 10.1021/ac101131p] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Aleeta M. Powe
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Susmita Das
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Mark Lowry
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Bilal El-Zahab
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Sayo O. Fakayode
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Maxwell L. Geng
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Gary A. Baker
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Lin Wang
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Matthew E. McCarroll
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Gabor Patonay
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Min Li
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Mohannad Aljarrah
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Sharon Neal
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Isiah M. Warner
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
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