1
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Hossain M, Mahbub S, Abdul Rub M, Rana S, Anamul Hoque M, Kumar D, Alghamdi YG, Abdullah Khan M. The role of additives on the interaction behavior of levofloxacin hemihydrate with crown ether: UV-visible spectroscopic and DFT techniques. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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2
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Poletaeva DA, Soldatova YV, Smolina AV, Savushkin MA, Klimanova EN, Sanina NA, Faingold II. The Influence of Cationic Nitrosyl Iron Complex with Penicillamine Ligands on Model Membranes, Membrane-Bound Enzymes and Lipid Peroxidation. MEMBRANES 2022; 12:membranes12111088. [PMID: 36363643 PMCID: PMC9694463 DOI: 10.3390/membranes12111088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/24/2022] [Accepted: 10/30/2022] [Indexed: 06/01/2023]
Abstract
This paper shows the biological effects of cationic binuclear tetranitrosyl iron complex with penicillamine ligands (TNIC-PA). Interaction with a model membrane was assessed using a fluorescent probes technique. Antioxidant activity was studied using a thiobarbituric acid reactive species assay (TBARS) and a chemiluminescence assay. The catalytic activity of monoamine oxidase (MAO) was determined by measuring liberation of ammonia. Antiglycation activity was determined fluometrically by thermal glycation of albumine by D-glucose. The higher values of Stern-Volmer constants (KSV) obtained for the pyrene located in hydrophobic regions (3.9 × 104 M-1) compared to KSV obtained for eosin Y located in the polar headgroup region (0.9 × 104 M-1) confirms that TNIC-PA molecules prefer to be located in the hydrophobic acyl chain region, close to the glycerol group of lipid molecules. TNIC-PA effectively inhibited the process of spontaneous lipid peroxidation, due to additive contributions from releasing NO and penicillamine ligand (IC50 = 21.4 µM) and quenched luminol chemiluminescence (IC50 = 3.6 μM). High activity of TNIC-PA in both tests allows us to assume a significant role of its radical-scavenging activity in the realization of antioxidant activity. It was shown that TNIC-PA (50-1000 μM) selectively inhibits the membrane-bound enzyme MAO-A, a major source of ROS in the heart. In addition, TNIC-PA is an effective inhibitor of non-enzymatic protein glycation. Thus, the evaluated biological effects of TNIC-PA open up the possibility of its practical application in chemotherapy for socially significant diseases, especially cardiovascular diseases.
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Affiliation(s)
- Darya A. Poletaeva
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue, 1142432 Chernogolovka, Russia
| | - Yuliya V. Soldatova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue, 1142432 Chernogolovka, Russia
| | - Anastasiya V. Smolina
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue, 1142432 Chernogolovka, Russia
| | - Maxim A. Savushkin
- Faculty of Fundamental Physical and Chemical Engineering, Moscow State University, 1142432 Moscow, Russia
| | - Elena N. Klimanova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue, 1142432 Chernogolovka, Russia
| | - Nataliya A. Sanina
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue, 1142432 Chernogolovka, Russia
- Medicinal Chemistry Research and Education Center, Moscow Region State University, 1142432 Mytishchy, Russia
| | - Irina I. Faingold
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue, 1142432 Chernogolovka, Russia
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3
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Drug–Membrane Interaction as Revealed by Spectroscopic Methods: The Role of Drug Structure in the Example of Rifampicin, Levofloxacin and Rapamycin. BIOPHYSICA 2022. [DOI: 10.3390/biophysica2040032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We have investigated the nature of the interaction of small organic drug molecules with lipid membranes of various compositions. Using infrared spectroscopy and differential scanning calorimetry methods, we studied the role of the structure of the active molecule in interaction with the membrane using the example of dipalmitoylphosphatidylcholine (DPPC) and dipalmitoylphosphatidylcholine:cardiolipin (DPPC:CL) liposomes. We discovered the key role of the heterocycle in interaction with the polar part of the bilayer and the network of unsaturated bonds in interaction with the hydrophobic part. For rifampicin and levofloxacin, the main binding sites were phosphate and carbonyl groups of lipids, and in the case of anionic liposomes we found a slight penetration of rifampicin into the hydrophobic part of the bilayer. For rapamycin, experimental confirmation of the localization of the molecule in the region of fatty acid chains was obtained, and perturbation in the region of phosphate groups was demonstrated for the first time. The process of phase transition of liposomal forms of rifampicin and levofloxacin was studied. DPPC liposomes accelerate the phase transition when loaded with a drug. DPPC:CL liposomes are less susceptible to changes in the phase transition rate.
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4
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Ferreira M, Gameiro P. Fluoroquinolone-Transition Metal Complexes: A Strategy to Overcome Bacterial Resistance. Microorganisms 2021; 9:microorganisms9071506. [PMID: 34361943 PMCID: PMC8303200 DOI: 10.3390/microorganisms9071506] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/01/2021] [Accepted: 07/08/2021] [Indexed: 01/12/2023] Open
Abstract
Fluoroquinolones (FQs) are antibiotics widely used in the clinical practice due to their large spectrum of action against Gram-negative and some Gram-positive bacteria. Nevertheless, the misuse and overuse of these antibiotics has triggered the development of bacterial resistance mechanisms. One of the strategies to circumvent this problem is the complexation of FQs with transition metal ions, known as metalloantibiotics, which can promote different activity and enhanced pharmacological behaviour. Here, we discuss the stability of FQ metalloantibiotics and their possible translocation pathways. The main goal of the present review is to frame the present knowledge on the conjunction of biophysical and biological tools that can help to unravel the antibacterial action of FQ metalloantibiotics. An additional goal is to shed light on the studies that must be accomplished to ensure stability and viability of such metalloantibiotics. Potentiometric, spectroscopic, microscopic, microbiological, and computational techniques are surveyed. Stability and partition constants, interaction with membrane porins and elucidation of their role in the influx, determination of the antimicrobial activity against multidrug-resistant (MDR) clinical isolates, elucidation of the mechanism of action, and toxicity assays are described for FQ metalloantibiotics.
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5
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Rinaldi F, Hanieh PN, Sennato S, De Santis F, Forte J, Fraziano M, Casciardi S, Marianecci C, Bordi F, Carafa M. Rifampicin-Liposomes for Mycobacterium abscessus Infection Treatment: Intracellular Uptake and Antibacterial Activity Evaluation. Pharmaceutics 2021; 13:1070. [PMID: 34371761 PMCID: PMC8309174 DOI: 10.3390/pharmaceutics13071070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/05/2021] [Accepted: 07/08/2021] [Indexed: 11/17/2022] Open
Abstract
Treatment of pulmonary infections caused by Mycobacterium abscessus are extremely difficult to treat, as this species is naturally resistant to many common antibiotics. Liposomes are vesicular nanocarriers suitable for hydrophilic and lipophilic drug loading, able to deliver drugs to the target site, and successfully used in different pharmaceutical applications. Moreover, liposomes are biocompatible, biodegradable and nontoxic vesicles and nebulized liposomes are efficient in targeting antibacterial agents to macrophages. The present aim was to formulate rifampicin-loaded liposomes (RIF-Lipo) for lung delivery, in order to increase the local concentration of the antibiotic. Unilamellar liposomal vesicles composed of anionic DPPG mixed with HSPC for rifampicin delivery were designed, prepared, and characterized. Samples were prepared by using the thin-film hydration method. RIF-Lipo and unloaded liposomes were characterized in terms of size, ζ-potential, bilayer features, stability and in different biological media. Rifampicin's entrapment efficiency and release were also evaluated. Finally, biological activity of RIF-loaded liposomes in Mycobacterium abscessus-infected macrophages was investigated. The results show that RIF-lipo induce a significantly better reduction of intracellular Mycobacterium abscessus viability than the treatment with free drug. Liposome formulation of rifampicin may represent a valuable strategy to enhance the biological activity of the drug against intracellular mycobacteria.
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Affiliation(s)
- Federica Rinaldi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
| | - Patrizia Nadia Hanieh
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
| | - Simona Sennato
- Istituto dei Sistemi Complessi (ISC)-CNR, sede “Sapienza” and Dipartimento di Fisica, Sapienza Università di Roma, 00185 Rome, Italy;
| | - Federica De Santis
- Dipartimento di Biologia, Università di Roma “Tor Vergata” Via della Ricerca Scientifica, 00133 Rome, Italy; (F.D.S.); (M.F.)
| | - Jacopo Forte
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
| | - Maurizio Fraziano
- Dipartimento di Biologia, Università di Roma “Tor Vergata” Via della Ricerca Scientifica, 00133 Rome, Italy; (F.D.S.); (M.F.)
| | - Stefano Casciardi
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, National Institute for Insurance against Accidents at Work (INAIL), Monteporzio Catone, 00144 Rome, Italy;
| | - Carlotta Marianecci
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
| | - Federico Bordi
- Istituto dei Sistemi Complessi (ISC)-CNR, sede “Sapienza” and Dipartimento di Fisica, Sapienza Università di Roma, 00185 Rome, Italy;
| | - Maria Carafa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
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6
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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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7
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Sharifian Gh M. Recent Experimental Developments in Studying Passive Membrane Transport of Drug Molecules. Mol Pharm 2021; 18:2122-2141. [PMID: 33914545 DOI: 10.1021/acs.molpharmaceut.1c00009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The ability to measure the passive membrane permeation of drug-like molecules is of fundamental biological and pharmaceutical importance. Of significance, passive diffusion across the cellular membranes plays an effective role in the delivery of many pharmaceutical agents to intracellular targets. Hence, approaches for quantitative measurement of membrane permeability have been the topics of research for decades, resulting in sophisticated biomimetic systems coupled with advanced techniques. In this review, recent developments in experimental approaches along with theoretical models for quantitative and real-time analysis of membrane transport of drug-like molecules through mimetic and living cell membranes are discussed. The focus is on time-resolved fluorescence-based, surface plasmon resonance, and second-harmonic light scattering approaches. The current understanding of how properties of the membrane and permeant affect the permeation process is discussed.
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Affiliation(s)
- Mohammad Sharifian Gh
- Department of Cell Biology, University of Virginia, Charlottesville, Virginia 22908, United States
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8
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Sousa CF, Coimbra JTS, Ferreira M, Pereira-Leite C, Reis S, Ramos MJ, Fernandes PA, Gameiro P. Passive Diffusion of Ciprofloxacin and its Metalloantibiotic: A Computational and Experimental study. J Mol Biol 2021; 433:166911. [PMID: 33676927 DOI: 10.1016/j.jmb.2021.166911] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/19/2021] [Accepted: 02/26/2021] [Indexed: 11/17/2022]
Abstract
Fluoroquinolones (FQ) are antibiotics widely used in clinical practise, but the development of bacterial resistance to these drugs is currently a critical public health problem. In this context, ternary copper complexes of FQ (CuFQPhen) have been studied as a potential alternative. In this study, we compared the passive diffusion across the lipid bilayer of one of the most used FQ, ciprofloxacin (Cpx), and its ternary copper complex, CuCpxPhen, that has shown previous promising results regarding antibacterial activity and membrane partition. A combination of spectroscopic studies and molecular dynamics simulations were used and two different model membranes tested: one composed of anionic phospholipids, and the other composed of zwitterionic phospholipids. The obtained results showed a significantly higher membrane permeabilization activity, larger partition, and a more favourable free energy landscape for the permeation of CuCpxPhen across the membrane, when compared to Cpx. Furthermore, the computational results indicated a more favourable translocation of CuCpxPhen across the anionic membrane, when compared to the zwitterionic one, suggesting a higher specificity towards the former. These findings are important to decipher the influx mechanism of CuFQPhen in bacterial cells, which is crucial for the ultimate use of CuFQPhen complexes as an alternative to FQ to tackle multidrug-resistant bacteria.
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Affiliation(s)
- Carla F Sousa
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
| | - João T S Coimbra
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
| | - Mariana Ferreira
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
| | - Catarina Pereira-Leite
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Salette Reis
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Maria J Ramos
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
| | - Pedro A Fernandes
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
| | - Paula Gameiro
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
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9
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Velez-Saboyá CS, Oropeza-Guzman E, Sierra-Valdez FJ, Ruiz-Suárez JC. Ca 2+-mediated enhancement of anesthetic diffusion across phospholipid multilamellar systems. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1863:183509. [PMID: 33189718 DOI: 10.1016/j.bbamem.2020.183509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/14/2020] [Accepted: 11/09/2020] [Indexed: 11/28/2022]
Abstract
Although sharing common properties with other divalent cations, calcium ions induce fine-tuned electrostatic effects essential in many biological processes. Not only related with protein structure or ion channels, calcium is also determinant for other biomolecules such as lipids or even drugs. Cellular membranes are the first interaction barriers for drugs. Depending on their hydrophilic, hydrophobic or amphipathic properties, they have to overcome such barriers to permeate and diffuse through inner lipid bilayers, cells or even tissues. In this context, the role of calcium in the permeation of cationic amphiphilic drugs (CADs) through lipid membranes is not well understood. We combine differential scanning calorimetry (DSC) and Fourier-transform infrared spectroscopy (FTIR) to investigate the effect of Ca2+ on the interlamellar diffusion kinetics of the local anesthetic tetracaine (TTC) in multilamellar artificial membrane systems. Our DSC results show the interesting phenomenon that TTC diffusion can be modified in two different ways in the presence of Ca2+. Furthermore, TTC diffusion exhibits a thermal-dependent membrane interaction in the presence of Ca2+. The FTIR results suggest the presence of ion-dipole interactions between Ca2+ and the carbonyl group of TTC, leading us to hypothesize that Ca2+ destabilizes the hydration shell of TTC, which in turn diffuses deeper into the multilamellar lipid structures. Our results demonstrate the relevance of the Ca2+ ion in the drug permeation and diffusion through lipid bilayers.
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Affiliation(s)
- Carol S Velez-Saboyá
- Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV) Unidad Monterrey, Apodaca, Nuevo León 66600, Mexico
| | - Eric Oropeza-Guzman
- Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV) Unidad Monterrey, Apodaca, Nuevo León 66600, Mexico
| | - Francisco J Sierra-Valdez
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. 64849, Mexico
| | - Jesús C Ruiz-Suárez
- Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV) Unidad Monterrey, Apodaca, Nuevo León 66600, Mexico.
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10
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Santos MSC, Matos AM, Reis M, Martins F. Lipophilicity assessment of some isoniazid derivatives active against Mycobacterium tuberculosis. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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11
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Regulation of Lipid Membrane Partitioning of Tamoxifen by Ionic Strength and Cholesterol. Pharm Res 2020; 37:53. [DOI: 10.1007/s11095-020-2771-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 01/24/2020] [Indexed: 11/26/2022]
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12
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Salehi B, Selamoglu Z, S. Mileski K, Pezzani R, Redaelli M, C. Cho W, Kobarfard F, Rajabi S, Martorell M, Kumar P, Martins N, Subhra Santra T, Sharifi-Rad J. Liposomal Cytarabine as Cancer Therapy: From Chemistry to Medicine. Biomolecules 2019; 9:773. [PMID: 31771220 PMCID: PMC6995526 DOI: 10.3390/biom9120773] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/08/2019] [Accepted: 11/14/2019] [Indexed: 12/21/2022] Open
Abstract
Cancer is the second leading cause of death worldwide. The main modality to fight against cancer is surgery, radiotherapy, and chemotherapy, and more recently targeted therapy, gene therapy and immunotherapy, which play important roles in treating cancer patients. In the last decades, chemotherapy has been well developed. Nonetheless, administration of the drug is not always successful, as limited drug dosage can reach the tumor cells.. In this context, the possibility to use an encapsulated anti-cancer drug may potentially solve the problem. Liposomal cytarabine is a formulation with pronounced effectiveness in lymphomatous meningitis and reduced cardiotoxicity if compared to liposomal anthracyclines. Thus, the future liposomal cytarabine use could be extended to other diseases given its reduction in cytotoxic side effects compared to the free formulation. This review summarizes the chemistry and biology of liposomal cytarabine, with exploration of its clinical implications.
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Affiliation(s)
- Bahare Salehi
- Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam 44340847, Iran;
| | - Zeliha Selamoglu
- Department of Medical Biology, Faculty of Medicine, Nigde Ömer Halisdemir University, Campus, 51240 Nigde, Turkey;
| | - Ksenija S. Mileski
- Department of Morphology and Systematic of Plants, Institute of Botany and Botanical Garden “Jevremovac,” Faculty of Biology, University of Belgrade, Belgrade 11000, Serbia;
| | - Raffaele Pezzani
- O.U. Endocrinology, Department of Medicine (DIMED), University of Padova, via Ospedale 105, 35128 Padova, Italy
- AIROB, Associazione Italiana per la Ricerca Oncologica di Base, 35128 Padova, Italy;
| | - Marco Redaelli
- AIROB, Associazione Italiana per la Ricerca Oncologica di Base, 35128 Padova, Italy;
- Venetian Institute for Molecular Science and Experimental Technologies, VIMSET. Pz Milani, 4 30010 Liettoli di Campolongo Maggiore, VE, Italy
| | - William C. Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong SAR, China
| | - Farzad Kobarfard
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1991953381, Iran;
- Department of Medicinal Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran 11369, Iran
| | - Sadegh Rajabi
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran 23871, Iran;
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, University of Concepcion, Concepcion 4070386, Chile;
- Universidad de Concepción, Unidad de Desarrollo Tecnológico, UDT, Concepcion 4070386, Chile
| | - Pradeep Kumar
- Department of Forestry, North Eastern Regional Institute of Science and Technology, (Deemed To Be University-MHRD), Nirjuli (Itanagar) 791109, India;
| | - Natália Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal;
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal
| | - Tuhin Subhra Santra
- Department of Engineering Design, Indian Institute of Technology Madras, Chennai 600036, India;
| | - Javad Sharifi-Rad
- Zabol Medicinal Plants Research Center, Zabol University of Medical Sciences, Zabol 61615-585, Iran
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13
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Pinheiro M, Magalhães J, Reis S. Antibiotic interactions using liposomes as model lipid membranes. Chem Phys Lipids 2019; 222:36-46. [DOI: 10.1016/j.chemphyslip.2019.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 05/07/2019] [Accepted: 05/08/2019] [Indexed: 02/02/2023]
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14
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Lopes S, Ivanova G, de Castro B, Gameiro P. Cardiolipin and phosphatidylethanolamine role in dibucaine interaction with the mitochondrial membrane. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:1152-1161. [DOI: 10.1016/j.bbamem.2019.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 02/13/2019] [Accepted: 02/27/2019] [Indexed: 02/06/2023]
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15
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Pham VT, Nguyen TQ, Dao UPN, Nguyen TT. On the interaction between fluoxetine and lipid membranes: Effect of the lipid composition. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:50-61. [PMID: 28982068 DOI: 10.1016/j.saa.2017.09.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 09/16/2017] [Accepted: 09/17/2017] [Indexed: 05/27/2023]
Abstract
Molecular interaction between the antidepressant fluoxetine and lipid bilayers was investigated in order to provide insights into the drug's incorporation to lipid membranes. In particular, the effects of lipid's unsaturation degree and cholesterol content on the partitioning of fluoxetine into large unilamellar vesicles (LUVs) comprised of unsaturated 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and saturated 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) were evaluated using second derivative spectrophotometry and Attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR). It was found that fluoxetine partitioned to a greater extent into the liquid-crystalline DOPC LUVs than into the solid-gel DPPC LUVs. The lipid physical state dependence of drug partitioning was verified by increasing the temperature in which the partition coefficient of fluoxetine significantly increased upon the change of the lipid phase from solid-gel to liquid-crystalline. The incorporation of 28mol% cholesterol into the LUVs exerted a significant influence on the drug partitioning into both DOPC and DPPC LUVs. The ATR-FTIR study revealed that fluoxetine perturbed the conformation of DOPC more strongly than that of DPPC due to the cis-double bonds in the lipid acyl chains. Fluoxetine possibly bound to the carbonyl moiety of the lipids through the hydrogen bonding formation while displaced some water molecules surrounding the PO2- regions of the lipid head groups. Cholesterol, however, could lessen the interaction between fluoxetine and the carbonyl groups of both DOPC and DPPC LUVs. These findings provided a better understanding of the role of lipid structure and cholesterol on the interaction between fluoxetine and lipid membranes, shedding more light into the drug's therapeutic action.
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Affiliation(s)
- Vy T Pham
- School of Biotechnology, International University, Vietnam National University in HCMC, Block 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam
| | - Trinh Q Nguyen
- School of Biotechnology, International University, Vietnam National University in HCMC, Block 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam
| | - Uyen P N Dao
- School of Biotechnology, International University, Vietnam National University in HCMC, Block 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam
| | - Trang T Nguyen
- School of Biotechnology, International University, Vietnam National University in HCMC, Block 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam.
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16
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Loureiro DRP, Soares JX, Lopes D, Macedo T, Yordanova D, Jakobtorweihen S, Nunes C, Reis S, Pinto MMM, Afonso CMM. Accessing lipophilicity of drugs with biomimetic models: A comparative study using liposomes and micelles. Eur J Pharm Sci 2018; 115:369-380. [PMID: 29366962 DOI: 10.1016/j.ejps.2018.01.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 01/12/2018] [Accepted: 01/13/2018] [Indexed: 12/24/2022]
Abstract
Lipophilicity is a physicochemical property of crucial importance in drug discovery and drug design. Biomimetic models, such as liposomes and micelles, constitute a valuable tool for the assessment of lipophilicity through the determination of partition coefficients (log Kp). However, the lack of standardization hampers the judgment about which model or method has the best and broadest passive drug permeation predictive capacity. This work provides a comparative analysis between the methodologies based on biomimetic models to determine the partition coefficient (log Kp). For that purpose, a set of reference substances preconized by the Organization for Economic Cooperation and Development (OECD) guidelines was used. The biomimetic models employed were liposomes and micelles composed by 1,2-dimyristoyl-sn-glycero-3-phosphorylcholine (DMPC) and hexadecylphosphocholine (HePC), respectively. Both lipids were used as representative phospholipids of natural membranes. The partition coefficients between biomimetic models and aqueous phases were determined by derivative spectroscopy at physiological conditions (37 °C and pH 7.4). The partition coefficients obtained using biomimetic models are quite different and more reliable than the ones obtained using an octanol/water system. Comparing the performance of the two biomimetic models, micelles revealed to be suitable only for substances with high molar absorption coefficient and log Kp > 3, but in general liposomes are the best model for accessing lipophilicity of drugs. Furthermore, a comparison between experimental data and the partition coefficients determined by the computational method COSMOmic is also provided and discussed. As a final summarizing result, a decision tree is provided in order to guide the selection of a tool for assessing the lipophilicity of drugs.
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Affiliation(s)
- Daniela R P Loureiro
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - José X Soares
- LAQV-REQUIMTE, Department of Chemical Sciences, Laboratory of Applied Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Daniela Lopes
- LAQV-REQUIMTE, Department of Chemical Sciences, Laboratory of Applied Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Tiago Macedo
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Denitsa Yordanova
- Institute of Thermal Separation Processes, Hamburg University of Technology, Germany
| | - Sven Jakobtorweihen
- Institute of Thermal Separation Processes, Hamburg University of Technology, Germany
| | - Cláudia Nunes
- LAQV-REQUIMTE, Department of Chemical Sciences, Laboratory of Applied Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Salette Reis
- LAQV-REQUIMTE, Department of Chemical Sciences, Laboratory of Applied Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Madalena M M Pinto
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; Interdisciplinary Center of Marine and Environmental Investigation (CIIMAR/CIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Porto, Portugal
| | - Carlos M M Afonso
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; Interdisciplinary Center of Marine and Environmental Investigation (CIIMAR/CIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Porto, Portugal.
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17
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Samelo J, Mora MJ, Granero GE, Moreno MJ. Partition of Amphiphilic Molecules to Lipid Bilayers by ITC: Low-Affinity Solutes. ACS OMEGA 2017; 2:6863-6869. [PMID: 31457272 PMCID: PMC6645030 DOI: 10.1021/acsomega.7b01145] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 09/25/2017] [Indexed: 05/28/2023]
Abstract
A protocol is developed to allow the accurate characterization of partition to lipid bilayers for solutes with low affinity, using isothermal titration calorimetry. The methodology proposed is suitable for studies using complex membranes, such as intact biomembranes or whole cells. In the method developed, the association is characterized at increasing solute concentrations. This allows the characterization of solute partition into unperturbed membranes, as well as effects induced by high solute concentrations. Most druglike molecules are expected to interact with low-to-moderate affinity with relevant cell membranes. This is due to both the need for a relatively high aqueous solubility of the drug and the poor binding properties of the cell membranes. The methodology is applied to characterize the interaction of antibiotic Rifampicin with 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine and with lipid bilayers representative of bacterial membranes.
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Affiliation(s)
- Jaime Samelo
- Chemistry
Department FCTUC, CQC-Biological Chemistry
Group, Largo D. Dinis,
Rua Larga, 3004-535 Coimbra, Portugal
| | - Maria Julia Mora
- Unidad
de Investigación y Desarrollo en Tecnología Farmacéutica
(UNITEFA), CONICET and Departamento de Ciencias Farmacéuticas,
Facultad de Ciencias Químicas, Universidad
Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Gladys Ester Granero
- Unidad
de Investigación y Desarrollo en Tecnología Farmacéutica
(UNITEFA), CONICET and Departamento de Ciencias Farmacéuticas,
Facultad de Ciencias Químicas, Universidad
Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Maria João Moreno
- Chemistry
Department FCTUC, CQC-Biological Chemistry
Group, Largo D. Dinis,
Rua Larga, 3004-535 Coimbra, Portugal
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18
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Do TT, Dao UP, Bui HT, Nguyen TT. Effect of electrostatic interaction between fluoxetine and lipid membranes on the partitioning of fluoxetine investigated using second derivative spectrophotometry and FTIR. Chem Phys Lipids 2017; 207:10-23. [DOI: 10.1016/j.chemphyslip.2017.07.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 06/25/2017] [Accepted: 07/01/2017] [Indexed: 12/26/2022]
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19
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Siontorou CG, Nikoleli GP, Nikolelis DP, Karapetis SK. Artificial Lipid Membranes: Past, Present, and Future. MEMBRANES 2017; 7:E38. [PMID: 28933723 PMCID: PMC5618123 DOI: 10.3390/membranes7030038] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/05/2017] [Accepted: 07/20/2017] [Indexed: 11/17/2022]
Abstract
The multifaceted role of biological membranes prompted early the development of artificial lipid-based models with a primary view of reconstituting the natural functions in vitro so as to study and exploit chemoreception for sensor engineering. Over the years, a fair amount of knowledge on the artificial lipid membranes, as both, suspended or supported lipid films and liposomes, has been disseminated and has helped to diversify and expand initial scopes. Artificial lipid membranes can be constructed by several methods, stabilized by various means, functionalized in a variety of ways, experimented upon intensively, and broadly utilized in sensor development, drug testing, drug discovery or as molecular tools and research probes for elucidating the mechanics and the mechanisms of biological membranes. This paper reviews the state-of-the-art, discusses the diversity of applications, and presents future perspectives. The newly-introduced field of artificial cells further broadens the applicability of artificial membranes in studying the evolution of life.
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Affiliation(s)
- Christina G Siontorou
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry, University of Piraeus, 18534 Piraeus, Greece.
| | - Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Department of Chemical Sciences, National Technical University of Athens, 15780 Athens, Greece.
| | - Dimitrios P Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry, University of Athens, 15771 Athens, Greece.
| | - Stefanos K Karapetis
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Department of Chemical Sciences, National Technical University of Athens, 15780 Athens, Greece.
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20
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Lee CH, Kim H, Harburg DV, Park G, Ma Y, Pan T, Kim JS, Lee NY, Kim BH, Jang KI, Kang SK, Huang Y, Kim J, Lee KM, Leal C, Rogers JA. Biological lipid membranes for on-demand, wireless drug delivery from thin, bioresorbable electronic implants. NPG ASIA MATERIALS 2015; 7:e227. [PMID: 27175221 PMCID: PMC4861403 DOI: 10.1038/am.2015.114] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 08/21/2015] [Accepted: 09/02/2015] [Indexed: 05/18/2023]
Abstract
On-demand, localized release of drugs in precisely controlled, patient-specific time sequences represents an ideal scenario for pharmacological treatment of various forms of hormone imbalances, malignant cancers, osteoporosis, diabetic conditions and others. We present a wirelessly operated, implantable drug delivery system that offers such capabilities in a form that undergoes complete bioresorption after an engineered functional period, thereby obviating the need for surgical extraction. The device architecture combines thermally actuated lipid membranes embedded with multiple types of drugs, configured in spatial arrays and co-located with individually addressable, wireless elements for Joule heating. The result provides the ability for externally triggered, precision dosage of drugs with high levels of control and negligible unwanted leakage, all without the need for surgical removal. In vitro and in vivo investigations reveal all of the underlying operational and materials aspects, as well as the basic efficacy and biocompatibility of these systems.
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Affiliation(s)
- Chi Hwan Lee
- Weldon School of Biomedical Engineering and School of Mechanical Engineering and The Center for Implantable Devices and Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA; Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Hojun Kim
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Daniel V Harburg
- Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Gayoung Park
- Department of Biomicrosystem Technology, Korea University, Seoul, Republic of Korea; Department of Biochemistry and Molecular Biology, Global Research Laboratory, Korea University College of Medicine, Seoul, Republic of Korea
| | - Yinji Ma
- Department of Civil and Environmental Engineering, and Mechanical Engineering, Center for Engineering and Health and Skin Disease Resesarch Center, Northwestern University, Evanston, IL, USA; Center for Mechanics and Materials, Tsinghua University, Beijing, China
| | - Taisong Pan
- Department of Civil and Environmental Engineering, and Mechanical Engineering, Center for Engineering and Health and Skin Disease Resesarch Center, Northwestern University, Evanston, IL, USA; State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Sichuan, China
| | - Jae Soon Kim
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Na Yeon Lee
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Bong Hoon Kim
- Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Kyung-In Jang
- Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Seung-Kyun Kang
- Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Yonggang Huang
- Department of Civil and Environmental Engineering, and Mechanical Engineering, Center for Engineering and Health and Skin Disease Resesarch Center, Northwestern University, Evanston, IL, USA
| | - Jeongmin Kim
- Department of Biochemistry and Molecular Biology, Global Research Laboratory, Korea University College of Medicine, Seoul, Republic of Korea
| | - Kyung-Mi Lee
- Department of Biochemistry and Molecular Biology, Global Research Laboratory, Korea University College of Medicine, Seoul, Republic of Korea
| | - Cecilia Leal
- Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - John A Rogers
- Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
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21
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Sousa CF, Ferreira M, Abreu B, Medforth CJ, Gameiro P. Interactions of a non-fluorescent fluoroquinolone with biological membrane models: A multi-technique approach. Int J Pharm 2015; 495:761-70. [PMID: 26392242 DOI: 10.1016/j.ijpharm.2015.09.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Revised: 09/15/2015] [Accepted: 09/16/2015] [Indexed: 11/30/2022]
Abstract
Fluoroquinolones are antibiotics which act by penetrating into bacterial cells and inhibiting enzymes related to DNA replication, and metal complexes of these drugs have recently been investigated as one approach to counteracting bacterial resistance. In this work, we apply a multi-technique approach to studying the partition coefficient (Kp) for the non-fluorescent third-generation fluoroquinolone sparfloxacin or its copper-complex with lipid membrane models of Gram-negative bacteria. The techniques investigated are UV-vis absorption and (19)F NMR spectroscopies together with quenching of a fluorescent probe present in the lipids (using steady-state and time-resolved methods). (19)F NMR spectroscopy has previously been used to determine the Kp values of fluorinated drugs but in the case of sparfloxacin did not yield useful data. However, similar Kp values for sparfloxacin or its copper-complex were obtained for the absorption and fluorescence quenching methods confirming the usefulness of a multi-technique approach. The Kp values measured for sparfloxacin were significantly higher than those found for other fluoroquinolones. In addition, similar Kp values were found for sparfloxacin and copper-complex suggesting that in contrast to other fluoroquinolones hydrophobic diffusion occurs readily for both of these molecules.
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Affiliation(s)
- Carla F Sousa
- Requimte/UCIBIO, Departmento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal
| | - Mariana Ferreira
- Requimte/UCIBIO, Departmento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal
| | - Bárbara Abreu
- Requimte/UCIBIO, Departmento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal
| | - Craig J Medforth
- Requimte/UCIBIO, Departmento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal
| | - Paula Gameiro
- Requimte/UCIBIO, Departmento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal.
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22
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Takegami S, Kitamura K, Ohsugi M, Ito A, Kitade T. Partitioning of organophosphorus pesticides into phosphatidylcholine small unilamellar vesicles studied by second-derivative spectrophotometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 145:198-202. [PMID: 25775945 DOI: 10.1016/j.saa.2015.02.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 02/16/2015] [Accepted: 02/17/2015] [Indexed: 06/04/2023]
Abstract
In order to quantitatively examine the lipophilicity of the widely used organophosphorus pesticides (OPs) chlorfenvinphos (CFVP), chlorpyrifos-methyl (CPFM), diazinon (DZN), fenitrothion (FNT), fenthion (FT), isofenphos (IFP), profenofos (PFF) and pyraclofos (PCF), their partition coefficient (Kp) values between phosphatidylcholine (PC) small unilamellar vesicles (SUVs) and water (liposome-water system) were determined by second-derivative spectrophotometry. The second-derivative spectra of these OPs in the presence of PC SUV showed a bathochromic shift according to the increase in PC concentration and distinct derivative isosbestic points, demonstrating the complete elimination of the residual background signal effects that were observed in the absorption spectra. The Kp values were calculated from the second-derivative intensity change induced by addition of PC SUV and obtained with a good precision of R.S.D. below 10%. The Kp values were in the order of CPFM>FT>PFF>PCF>IFP>CFVP>FNT⩾DZN and did not show a linear correlation relationship with the reported partition coefficients obtained using an n-octanol-water system (R(2)=0.530). Also, the results quantitatively clarified the effect of chemical-group substitution in OPs on their lipophilicity. Since the partition coefficient for the liposome-water system is more effective for modeling the quantitative structure-activity relationship than that for the n-octanol-water system, the obtained results are toxicologically important for estimating the accumulation of these OPs in human cell membranes.
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Affiliation(s)
- Shigehiko Takegami
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan.
| | - Keisuke Kitamura
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Mayuko Ohsugi
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Aya Ito
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Tatsuya Kitade
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
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23
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Deleu M, Crowet JM, Nasir MN, Lins L. Complementary biophysical tools to investigate lipid specificity in the interaction between bioactive molecules and the plasma membrane: A review. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:3171-3190. [DOI: 10.1016/j.bbamem.2014.08.023] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 08/05/2014] [Accepted: 08/21/2014] [Indexed: 02/08/2023]
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24
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Pinheiro M, Silva AS, Pisco S, Reis S. Interactions of isoniazid with membrane models: Implications for drug mechanism of action. Chem Phys Lipids 2014; 183:184-90. [DOI: 10.1016/j.chemphyslip.2014.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 06/24/2014] [Accepted: 07/06/2014] [Indexed: 11/27/2022]
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25
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Pinheiro M, Pisco S, Silva AS, Nunes C, Reis S. Evaluation of the effect of rifampicin on the biophysical properties of the membranes: Significance for therapeutic and side effects. Int J Pharm 2014; 466:190-7. [DOI: 10.1016/j.ijpharm.2014.03.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Revised: 02/27/2014] [Accepted: 03/01/2014] [Indexed: 01/01/2023]
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26
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Esteves F, Moutinho C, Matos C. Correlation between octanol/water and liposome/water distribution coefficients and drug absorption of a set of pharmacologically active compounds. J Liposome Res 2013; 23:83-93. [PMID: 23464986 DOI: 10.3109/08982104.2012.742539] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Absorption and consequent therapeutic action are key issues in the development of new drugs by the pharmaceutical industry. In this sense, different models can be used to simulate biological membranes to predict the absorption of a drug. This work compared the octanol/water and the liposome/water models. The parameters used to relate the two models were the distribution coefficients between liposomes and water and octanol and water and the fraction of drug orally absorbed. For this study, 66 drugs were collected from literature sources and divided into four groups according to charge and ionization degree: neutral; positively charged; negatively charged; and partially ionized/zwitterionic. The results show a satisfactory linear correlation between the octanol and liposome systems for the neutral (R²= 0.9324) and partially ionized compounds (R²= 0.9367), contrary to the positive (R²= 0.4684) and negatively charged compounds (R²= 0.1487). In the case of neutral drugs, results were similar in both models because of the high fraction orally absorbed. However, for the charged drugs (positively, negatively, and partially ionized/zwitterionic), the liposomal model has a more-appropriate correlation with absorption than the octanol model. These results show that the neutral compounds only interact with membranes through hydrophobic bonds, whereas charged drugs favor electrostatic interactions established with the liposomes. With this work, we concluded that liposomes may be a more-appropriate biomembrane model than octanol for charged compounds.
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Affiliation(s)
- Freddy Esteves
- Grupo de Investigação em Bioengenharia e Química Biofarmacêutica, Faculdade de Ciências da Saúde, Universidade Fernando Pessoa, Porto, Portugal
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27
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Omran AA. An in vitro spectrometric method for determining the partition coefficients of non-steroidal anti-inflammatory drugs into human erythrocyte ghost membranes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 104:461-467. [PMID: 23277182 DOI: 10.1016/j.saa.2012.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 11/10/2012] [Accepted: 12/02/2012] [Indexed: 06/01/2023]
Abstract
Usefulness of second derivative spectrophotometry for determining the partition coefficients (K(p)s) of four non-steroidal anti-inflammatory drugs (NSAIDs) between human erythrocyte ghost (HEG) membranes and buffer at simulated physiological conditions (pH=7.4, 37 °C) has been adequately emphasized. In the absorption spectra for each of the investigated NSAIDs, λ(max) was red-shifted in presence of HEG membranes, indicating that NSAIDs have the nature of metachromasy between lipid bilayer and water. Further quantitative spectral data for calculating K(p)s could not be obtained from the absorption spectra because of the presence of background signal impacts of HEG lipid bilayers. Second derivative spectra were calculated from absorption spectra and fortunately showed three isosbestic derivative points for each NSAID, indicating without doubt that the background signals were entirely eliminated. From the relation between the derivative intensity change (ΔD) induced by addition of HEG membranes, K(p)s were calculated and obtained with RSD of below 6%. Fractions of partitioned NSAIDs are in well-harmony with that derived from the experimental values. Moreover, validity of the proposed method was confirmed. Conclusively, the second derivative spectrometry has proven to be a facile, reliable and more expeditious method to obtain in vitro K(p)s of drugs to HEG without previous separation.
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Affiliation(s)
- Ahmed A Omran
- Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt.
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28
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Bonicelli MG, Giansanti L, Ierino M, Mancini G. Interaction of cationic liposomes with cell membrane models. J Colloid Interface Sci 2011; 355:1-8. [DOI: 10.1016/j.jcis.2010.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 11/30/2010] [Accepted: 12/01/2010] [Indexed: 10/18/2022]
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29
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Chen L, Gan L, An S, Zhu D, Xu Z, Hao Z, Chen L. Interaction between (1,1′-Binaphthalene)-2,2′-diol and Lecithin Liposome. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Peetla C, Stine A, Labhasetwar V. Biophysical interactions with model lipid membranes: applications in drug discovery and drug delivery. Mol Pharm 2009; 6:1264-76. [PMID: 19432455 DOI: 10.1021/mp9000662] [Citation(s) in RCA: 336] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The transport of drugs or drug delivery systems across the cell membrane is a complex biological process, often difficult to understand because of its dynamic nature. In this regard, model lipid membranes, which mimic many aspects of cell-membrane lipids, have been very useful in helping investigators to discern the roles of lipids in cellular interactions. One can use drug-lipid interactions to predict pharmacokinetic properties of drugs, such as their transport, biodistribution, accumulation, and hence efficacy. These interactions can also be used to study the mechanisms of transport, based on the structure and hydrophilicity/hydrophobicity of drug molecules. In recent years, model lipid membranes have also been explored to understand their mechanisms of interactions with peptides, polymers, and nanocarriers. These interaction studies can be used to design and develop efficient drug delivery systems. Changes in the lipid composition of cells and tissue in certain disease conditions may alter biophysical interactions, which could be explored to develop target-specific drugs and drug delivery systems. In this review, we discuss different model membranes, drug-lipid interactions and their significance, studies of model membrane interactions with nanocarriers, and how biophysical interaction studies with lipid model membranes could play an important role in drug discovery and drug delivery.
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Affiliation(s)
- Chiranjeevi Peetla
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
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31
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Zaru M, Sinico C, De Logu A, Caddeo C, Lai F, Manca ML, Fadda AM. Rifampicin-loaded liposomes for the passive targeting to alveolar macrophages: in vitro and in vivo evaluation. J Liposome Res 2009; 19:68-76. [PMID: 19515009 DOI: 10.1080/08982100802610835] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Mycobacterium avium complex (MAC), the most frequent cause of opportunistic nontuberculous pulmonary infection, is made up of a group of intracellular pathogens that are able to survive and multiply inside lung alveolar macrophages. As nebulized liposomes are reported to be effective to target antibacterial agents to macrophages, in this work we have prepared and characterized re-dispersible freeze-dried rifampicin (RFP)-loaded vesicles by using soy lecithin (SL) and a commercial, enriched mixture of soy phosphatidylcholine (Phospholipon 90, P90) with or without cholesterol. The obtained results showed that RFP could be loaded stably in SL vesicles only when cholesterol was not present in the film preparation, whereas with P90 vesicles, the highest stability was obtained with formulations prepared with P90/cholesterol 7:1 or 4:1 molar ratios. RFP-liposome aerosols were generated using an efficient high-output continuous-flow nebulizer, driven by a compressor. After the experiments, nebulization efficiency (NE%) and nebulization efficiency of the encapsulated drug (NEED%) were evaluated. The results of our study indicated that nebulization properties and viscosity of formulations prepared with the low-transition-temperature phospholipids, SL and P90, are affected by vesicle composition. However, all formulations showed a good stability during nebulization and they were able to retain more than 65% of the incorporated drug. The effect of liposome encapsulation on lung levels of RFP following aerosol inhalation was determined in rats. The in vitro intracellular activity of RFP-loaded liposomes against MAC residing in macrophage-like J774 cells was also evaluated. Results indicated that liposomes are able to inhibit the growth of MAC in infected macrophages and to reach the lower airways in rats.
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Affiliation(s)
- Marco Zaru
- Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Cagliari, Cagliari, Italy
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Elsayed MMA, Vierl U, Cevc G. Accurate potentiometric determination of lipid membrane-water partition coefficients and apparent dissociation constants of ionizable drugs: electrostatic corrections. Pharm Res 2009; 26:1332-43. [PMID: 19283456 DOI: 10.1007/s11095-009-9842-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Accepted: 01/26/2009] [Indexed: 11/25/2022]
Abstract
PURPOSE Potentiometric lipid membrane-water partition coefficient studies neglect electrostatic interactions to date; this leads to incorrect results. We herein show how to account properly for such interactions in potentiometric data analysis. MATERIALS AND METHODS We conducted potentiometric titration experiments to determine lipid membrane-water partition coefficients of four illustrative drugs, bupivacaine, diclofenac, ketoprofen and terbinafine. We then analyzed the results conventionally and with an improved analytical approach that considers Coulombic electrostatic interactions. RESULTS The new analytical approach delivers robust partition coefficient values. In contrast, the conventional data analysis yields apparent partition coefficients of the ionized drug forms that depend on experimental conditions (mainly the lipid-drug ratio and the bulk ionic strength). This is due to changing electrostatic effects originating either from bound drug and/or lipid charges. A membrane comprising 10 mol-% mono-charged molecules in a 150 mM (monovalent) electrolyte solution yields results that differ by a factor of 4 from uncharged membranes results. CONCLUSION Allowance for the Coulombic electrostatic interactions is a prerequisite for accurate and reliable determination of lipid membrane-water partition coefficients of ionizable drugs from potentiometric titration data. The same conclusion applies to all analytical methods involving drug binding to a surface.
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Lima SAC, Cordeiro-da-Silva A, de Castro B, Gameiro P. Benzodiazepine-mediated structural changes in the multidrug transporter P-glycoprotein: an intrinsic fluorescence quenching analysis. J Membr Biol 2008; 223:117-25. [PMID: 18791834 DOI: 10.1007/s00232-008-9117-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2008] [Accepted: 06/10/2008] [Indexed: 11/28/2022]
Abstract
P-glycoprotein expressed in Pichia pastoris was used to study the drug binding sites of different benzodiazepines. The effect of bromazepam, chlordiazepoxide, diazepam and flurazepam on P-glycoprotein structure was investigated by measuring the intrinsic fluorescence of the transporter tryptophan residues. Purified mouse mdr1a transporter in mixed micelles of 3-[(3-cholamidopropyl)-dimethylammonio]-1-propanesulfonic acid and 1,2-dimiristoyl-sn-glycerol-3-phosphocholine emitted fluorescence at 340 nm indicative of the fluorophores in a relatively apolar environment. Acrylamide and iodide ion were used as collisional quenchers toward distinct regions of the transporter, the protein and the interface protein-surface, respectively. Binding of ATP induced conformational changes at the protein surface level in accordance with the location of the nucleotide binding sites. Bromazepam interaction with the transporter was located at the protein-surface interface, diazepam at the membrane region and chlordiazepoxide at the protein surface. Only the flurazepam interaction site was not detected by the quenchers used. All benzodiazepines were able to elicit reorientation of the protein fluorophores on the P-glycoprotein-ATP complex.
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Affiliation(s)
- Sofia A C Lima
- Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade Ciências, Universidade do Porto, Porto, Portugal
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Application of NMR and UV spectroscopy in the study of interactions between anticancer drugs and their phospholipid carriers. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.02.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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YANG JD, CAO TW, LIU ZF, KONG L, LIU SP. Effects of the Interaction of Rifamycin SV with Serum Albumins on the Resonance Rayleigh Scattering Spectra and Their Analytical Application. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Takegami S, Kitamura K, Funakoshi T, Kitade T. Partitioning of Anti-inflammatory Steroid Drugs into Phosphatidylcholine and Phosphatidylcholine-Cholesterol Small Unilamellar Vesicles as Studied by Second-Derivative Spectrophotometry. Chem Pharm Bull (Tokyo) 2008; 56:663-7. [DOI: 10.1248/cpb.56.663] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Neves P, Leite A, Rangel M, de Castro B, Gameiro P. Influence of structural factors on the enhanced activity of moxifloxacin: a fluorescence and EPR spectroscopic study. Anal Bioanal Chem 2007; 387:1543-52. [PMID: 17200861 DOI: 10.1007/s00216-006-1009-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2006] [Revised: 10/24/2006] [Accepted: 11/10/2006] [Indexed: 10/23/2022]
Abstract
Partition coefficients of moxifloxacin in liposomes of dimyristoyl-L-alpha-phosphatidylcholine or dimyristoyl-L-alpha-phosphatidylglycerol and water were determined by spectrophotometry and fluorimetry. The K (p) values obtained were larger than those reported for most of the other fluoroquinolones, a consequence of the structural changes observed in the molecule of moxifloxacin, which in turn change its acid/base properties. Introduction of a methoxy group at position 8 and a diazabicyclonyl ring at position 7 in the basic fluoroquinolone structure alters the charge distribution at the physiological pH of 7.4, and these changes seem to be responsible for its improved antibacterial potency and broader spectrum of activity. Location studies have also been performed using fluorescence and electron paramagnetic resonance (EPR) spectroscopies. The results show that moxifloxacin must be located near the phospholipid headgroups, similar to other fluoroquinolones, but contributions from a hydrophobic component were also detected. These results suggest that the enhanced activity of this drug may be related to a more facilitated entrance into the bacterial cell, perhaps including a mediator step involving electrostatic interaction with a hydrophobic component; this step then controls the extent or orientation of insertion and improves the electrostatic interaction.
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Affiliation(s)
- Patrícia Neves
- Faculdade de Ciências, Departamento de Química, REQUIMTE, 4169-007 Porto, Portugal
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Balali-Mood K, Ashley RH, Hauss T, Bradshaw JP. Neutron diffraction reveals sequence-specific membrane insertion of pre-fibrillar islet amyloid polypeptide and inhibition by rifampicin. FEBS Lett 2005; 579:1143-8. [PMID: 15710403 DOI: 10.1016/j.febslet.2004.12.085] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2004] [Revised: 11/08/2004] [Accepted: 12/23/2004] [Indexed: 10/25/2022]
Abstract
Human islet amyloid polypeptide (hIAPP) forms amyloid deposits in non-insulin-dependent diabetes mellitus (NIDDM). Pre-fibrillar hIAPP oligomers (in contrast to monomeric IAPP or mature fibrils) increase membrane permeability, suggesting an important role in the disease. In the first structural study of membrane-associated hIAPP, lamellar neutron diffraction shows that oligomeric hIAPP inserts into phospholipid bilayers, and extends across the membrane. Rifampicin, which inhibits hIAPP-induced membrane permeabilisation in functional studies, prevents membrane insertion. In contrast, rat IAPP (84% identical to hIAPP, but non-amyloidogenic) does not insert into bilayers. Our findings are consistent with the hypothesis that membrane-active pre-fibrillar hIAPP oligomers insert into beta cell membranes in NIDDM.
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Affiliation(s)
- Kia Balali-Mood
- Veterinary Biomedical Sciences, R(D)SVS, University of Edinburgh, Summerhall, Edinburgh EH9 1QH, UK
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Carrozzino JM, Khaledi MG. Interaction of Basic Drugs with Lipid Bilayers Using Liposome Electrokinetic Chromatography. Pharm Res 2004; 21:2327-35. [PMID: 15648265 DOI: 10.1007/s11095-004-7685-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE This study explores factors influencing the interactions of positively charged drugs with liposomes using liposome electrokinetic chromatography (LEKC) for the development of LEKC as a rapid screening method for drug-membrane interactions. METHODS Liposomes were prepared and the retention factors were measured for a series of basic drugs under a variety of buffer conditions, including various buffer types, concentrations, and ionic strengths as well as using different phospholipids and liposome compositions. LEKC retention is compared with octanol-water partitioning. RESULTS The interaction of ionizable solutes with liposomes decreased with increasing ionic strength of the aqueous buffer. The type of buffer also influences positively charged drug partitioning into liposomes. Varying the surface charge on the liposomes by the selection of phospholipids influences the electrostatic interactions, causing an increase in retention with increasing percentages of anionic lipids in the membrane. Poor correlations are observed between LEKC retention and octanol-water partitioning. CONCLUSIONS These studies demonstrate the overall buffer ionic strength at a given pH is more important than buffer type and concentration. The interaction of positively charged drugs with charged lipid bilayer membranes is selectively influenced by the pKa of the drug. Liposomes are more biologically relevant in vitro models for cell membranes than octanol, and LEKC provides a unique combination of advantages for rapid screening of drug-membrane interactions.
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Affiliation(s)
- Jennifer M Carrozzino
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
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Bosch Ojeda C, Sanchez Rojas F. Recent developments in derivative ultraviolet/visible absorption spectrophotometry. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.05.036] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Santos NC, Prieto M, Castanho MARB. Quantifying molecular partition into model systems of biomembranes: an emphasis on optical spectroscopic methods. BIOCHIMICA ET BIOPHYSICA ACTA 2003; 1612:123-35. [PMID: 12787930 DOI: 10.1016/s0005-2736(03)00112-3] [Citation(s) in RCA: 208] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Optical spectroscopies have been intensively used to determine partition coefficients by a plethora of methodologies. The present review is intended to give detailed and useful information for the determination of partition coefficients and addresses several relevant aspects, namely: (i) definition and calculation of the partition coefficient between aqueous and lipidic phases; (ii) partition coefficients vs. "binding" formalisms; (iii) advantages of spectroscopic methodologies over separation techniques; (iv) formalisms for various experimental approaches based on UV-Vis absorption or fluorescence parameters (fluorescence intensity, lifetime, anisotropy and quenching); (v) experimental hints, artifacts and model limitations; and (vi) a brief survey of nonoptical techniques.
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Affiliation(s)
- Nuno C Santos
- Instituto de Bioquímica, Faculdade de Medicina de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisbon, Portugal
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Rodrigues C, Gameiro P, Prieto M, de Castro B. Interaction of rifampicin and isoniazid with large unilamellar liposomes: spectroscopic location studies. BIOCHIMICA ET BIOPHYSICA ACTA 2003; 1620:151-9. [PMID: 12595084 DOI: 10.1016/s0304-4165(02)00528-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The location of isoniazid and rifampicin, two tuberculostatics commonly used for the treatment of Mycobacterium tuberculosis and Mycobacterium avium complex infectious diseases, in bilayers of dimyristoyl-L-alpha-phosphatidylcholine (DMPC) and dimyristoyl-L-a-phosphatidylglycerol (DMPG) have been studied by 1H NMR and fluorimetric methods. Steady-state fluorescence intensity and fluorescence energy transfer studies between rifampicin and a set of functionalized probes [n-(9-anthroyloxy)stearic acids, n=2, 12] reveal that, in both systems, isoniazid is located at the membrane surface whereas rifampicin is deeply buried inside the lipid bilayers. Steady-state fluorescence anisotropy studies performed with the probes 1,6-diphenyl-1,3,5-hexatriene (DPH) and trimethylammonium-diphenylhexa-triene (TMA-DPH), not only corroborate the above results, but also show that no changes in membrane fluidity were detected in either liposome. The 1H NMR results, in DMPC liposomes, confirm the location of rifampicin near the methylene group of the acyl chains of the lipid bilayers.
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Affiliation(s)
- Catarina Rodrigues
- CEQUP/Faculdade de Ciências, Departamento de Qui;mica, Universidade do Porto, R. Campo Alegre 687, Portugal
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Karpińska J, Hryniewicka E. Derivative Spectrophotometry as a Tool for Determination of Stability Constants of Some 4-2(-Pyridylazo)-resorcinol Complexes with Divalent Metal Ions. ACTA ACUST UNITED AC 2003. [DOI: 10.1081/tma-120023061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hendrich AB, Wesołowska O, Poła A, Motohashi N, Molnár J, Michalak K. Neither lipophilicity nor membrane-perturbing potency of phenothiazine maleates correlate with the ability to inhibit P-glycoprotein transport activity. Mol Membr Biol 2003; 20:53-60. [PMID: 12745926 DOI: 10.1080/0968768031000045815] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Although phenothiazines are known as multidrug resistance modifiers, the molecular mechanism of their activity remains unclear. Since phenothiazine molecules are amphiphilic, the interactions with membrane lipids may be related, at least partially, to their biological effects. Using the set of phenothiazine maleates differing in the type of phenothiazine ring substitution at position 2 and/or in the length of the alkyl bridge-connecting ring system and side chain group, we investigated if their ability to modulate the multidrug resistance of cancer cells correlated with model membrane perturbing potency. The influence exerted on lipid bilayers was determined by liposome/buffer partition coefficient measurements (using the absorption spectra second-derivative method), fluorescence spectroscopy and calorimetry. Biological effects were assessed by a flow cytometric functional test based on differential accumulation of fluorescent probe DiOC(2)(3) by parental and drug-resistant cells. We found that all phenothiazine maleates were incorporated into lipid bilayers and altered their biophysical properties. With only few exceptions, the extent of membrane perturbation induced by phenothiazine maleates correlated with their lipophilicity. Within the group of studied derivatives, the compounds substituted with CF(3)- at position 2 of phenothiazine ring were the most active membrane perturbants. No clear relation was found between effects exerted by phenothiazine maleates on model membranes and their ability to modulate P-glycoprotein transport activity.
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Affiliation(s)
- Andrzej B Hendrich
- Department of Biophysics Wrocław Medical University ul. Chalubinskiego 10 50-368 Wrocław, Poland.
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