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Hughes K, Le TB, Van Der Smissen P, Tyteca D, Mingeot-Leclercq MP, Quetin-Leclercq J. The Antileishmanial Activity of Eugenol Associated with Lipid Storage Reduction Rather Than Membrane Properties Alterations. Molecules 2023; 28:molecules28093871. [PMID: 37175277 PMCID: PMC10179746 DOI: 10.3390/molecules28093871] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/26/2023] [Accepted: 04/29/2023] [Indexed: 05/15/2023] Open
Abstract
Leishmaniasis is a neglected tropical disease that still infects thousands of people per year throughout the world. The occurrence of resistance against major treatments for this disease causes a healthcare burden in low-income countries. Eugenol is a phenylpropanoid that has shown in vitro antileishmanial activity against Leishmania mexicana mexicana (Lmm) promastigotes with an IC50 of 2.72 µg/mL and a high selectivity index. Its specific mechanism of action has yet to be studied. We prepared large unilamellar vesicles (LUVs), mimicking Lmm membranes, and observed that eugenol induced an increase in membrane permeability and a decrease in membrane fluidity at concentrations much higher than IC50. The effect of eugenol was similar to the current therapeutic antibiotic, amphotericin B, although the latter was effective at lower concentrations than eugenol. However, unlike amphotericin B, eugenol also affected the permeability of LUVs without sterol. Its effect on the membrane fluidity of Lmm showed that at high concentrations (≥22.5× IC50), eugenol increased membrane fluidity by 20-30%, while no effect was observed at lower concentrations. Furthermore, at concentrations below 10× IC50, a decrease in metabolic activity associated with the maintenance of membrane integrity revealed a leishmaniostatic effect after 24 h of incubation with Lmm promastigotes. While acidocalcisomes distribution and abundance revealed by Trypanosoma brucei vacuolar H+ pyrophosphatase (TbVP1) immunolabeling was not modified by eugenol, a dose-dependent decrease of lipid droplets assessed by the Nile Red assay was observed. We hereby demonstrate that the antileishmanial activity of eugenol might not directly involve plasma membrane sterols such as ergosterol, but rather target the lipid storage of Lmm.
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Affiliation(s)
- Kristelle Hughes
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 72, B1.72.03, B-1200 Brussels, Belgium
| | - Thanh Binh Le
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 72, B1.72.03, B-1200 Brussels, Belgium
| | - Patrick Van Der Smissen
- CELL Unit and PICT Imaging Platform, de Duve Institute, Université Catholique de Louvain, Avenue Hippocrate 75, B1.75.05, B-1200 Brussels, Belgium
| | - Donatienne Tyteca
- CELL Unit and PICT Imaging Platform, de Duve Institute, Université Catholique de Louvain, Avenue Hippocrate 75, B1.75.05, B-1200 Brussels, Belgium
| | - Marie-Paule Mingeot-Leclercq
- Cellular and Molecular Pharmacology Unit (FACM), Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 73, B1.73.05, B-1200 Brussels, Belgium
| | - Joëlle Quetin-Leclercq
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 72, B1.72.03, B-1200 Brussels, Belgium
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2
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Vanzolini T, Di Mambro T, Magnani M, Menotta M. AFM evaluation of a humanized recombinant antibody affecting C. auris cell wall and stability. RSC Adv 2023; 13:6130-6142. [PMID: 36814881 PMCID: PMC9940460 DOI: 10.1039/d2ra07217c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 02/02/2023] [Indexed: 02/22/2023] Open
Abstract
Fungal infections are increasingly impacting on the health of the population and particularly on subjects with a compromised immune system. The resistance phenomenon and the rise of new species carrying sometimes intrinsic and multi-drug resistance to the most commonly used antifungal drugs are greatly concerning healthcare organizations. As a result of this situation, there is growing interest in the development of therapeutic agents against pathogenic fungi. In particular, the Candida genus is responsible for severe life-threatening infections and among its species, C. auris is considered an urgent threat by the Center for Disease Control and Prevention, and is one of the three leading causes of morbidity and mortality worldwide. H5K1 is a humanized monoclonal antibody (hmAb) that selectively binds to β-1,3-glucans, vital components of the fungal cell wall. It has been previously demonstrated that it is active against Candida species, especially against C. auris, reaching its greatest potential when combined with commercially available antifungal drugs. Here we used atomic force microscopy (AFM) to assess the effects of H5K1, alone and in combination with fluconazole, caspofungin and amphotericin B, on C. auris cells. Through an extensive exploration we found that H5K1 has a significant role in the perturbation and remodeling of the fungal cell wall that is reflected in the loss of whole cell integrity. Moreover, it contributes substantially to the alterations in terms of chemical composition, stiffness and roughness induced specifically by caspofungin and amphotericin B. In addition to this, we demonstrated that AFM is a valuable technique to evaluate drug-microorganism interaction.
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Affiliation(s)
- Tania Vanzolini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Via Saffi 2 61029 Urbino Italy
| | | | - Mauro Magnani
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Via Saffi 2 61029 Urbino Italy
| | - Michele Menotta
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Via Saffi 2 61029 Urbino Italy
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3
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Sawangchan P, Alexandrino Júnior F, Alencar ÉN, Egito EST, Kirsch LE. The role of aggregation and ionization in the chemical instability of Amphotericin B in aqueous methanol. Int J Pharm 2023; 632:122586. [PMID: 36623739 DOI: 10.1016/j.ijpharm.2023.122586] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/26/2022] [Accepted: 01/03/2023] [Indexed: 01/09/2023]
Abstract
Amphotericin B (AmB) is a potent antimicrobial agent used in clinical practice. Nevertheless, the mechanism of its aqueous instability remains not yet fully understood, especially the role that its aggregation state plays in this process. Therefore, the current study used an aqueous methanol media to evaluate the AmB instability as a function of pH-, organic solvent- and concentration-dependent ionization and aggregation. To reach this goal, the aggregation status and instability were determined using UV-vis spectroscopy, LC-MS and HPLC. Moreover, not only the hydrolytic degradation products were identified by UV-vis spectroscopy and LC-MS, but also, the degradation rate constants were estimated by nonlinear regression. The results indicated that monomeric AmB was the predominant species under pH conditions, wherein the substrate was cationic (pH < 4) or anionic (pH > 9). On the other hand, aggregated AmB form was the predominant species for the zwitterionic substrate (at methanol concentration < 30 %(v/v)). Anionic substrate degraded by specific base-catalyzed lactone hydrolysis. Oxidation accounted for the loss of zwitterionic substrate. Aggregated zwitterionic AmB exhibited lower stability than monomeric zwitterionic AmB under neutral pH conditions. These studies are a step forward in comprehending the degradation kinetics of AmB in aqueous medium. In fact, along with our previous research on AmB instability in oils, it leads to a better understanding of the AmB stability in complex systems with an oil-water interface, such as disperse lipid systems.
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Affiliation(s)
- Phawanan Sawangchan
- The Division of Pharmaceutics and Translation Therapeutics, The University of Iowa, Iowa City, IA, USA
| | - Francisco Alexandrino Júnior
- The Division of Pharmaceutics and Translation Therapeutics, The University of Iowa, Iowa City, IA, USA; Graduate Program in Pharmaceutical Nanotechnology (PPGNanoFarma), Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Éverton N Alencar
- The Division of Pharmaceutics and Translation Therapeutics, The University of Iowa, Iowa City, IA, USA; Graduate Program in Pharmaceutical Nanotechnology (PPGNanoFarma), Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Eryvaldo S T Egito
- The Division of Pharmaceutics and Translation Therapeutics, The University of Iowa, Iowa City, IA, USA; Graduate Program in Pharmaceutical Nanotechnology (PPGNanoFarma), Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil.
| | - Lee E Kirsch
- The Division of Pharmaceutics and Translation Therapeutics, The University of Iowa, Iowa City, IA, USA
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4
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Haro-Reyes T, Díaz-Peralta L, Galván-Hernández A, Rodríguez-López A, Rodríguez-Fragoso L, Ortega-Blake I. Polyene Antibiotics Physical Chemistry and Their Effect on Lipid Membranes; Impacting Biological Processes and Medical Applications. MEMBRANES 2022; 12:membranes12070681. [PMID: 35877884 PMCID: PMC9316096 DOI: 10.3390/membranes12070681] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 01/27/2023]
Abstract
This review examined a collection of studies regarding the molecular properties of some polyene antibiotic molecules as well as their properties in solution and in particular environmental conditions. We also looked into the proposed mechanism of action of polyenes, where membrane properties play a crucial role. Given the interest in polyene antibiotics as therapeutic agents, we looked into alternative ways of reducing their collateral toxicity, including semi-synthesis of derivatives and new formulations. We follow with studies on the role of membrane structure and, finally, recent developments regarding the most important clinical applications of these compounds.
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Affiliation(s)
- Tammy Haro-Reyes
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Col. Chamilpa, Cuernavaca 62210, Morelos, Mexico; (T.H.-R.); (L.D.-P.); (A.G.-H.)
| | - Lucero Díaz-Peralta
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Col. Chamilpa, Cuernavaca 62210, Morelos, Mexico; (T.H.-R.); (L.D.-P.); (A.G.-H.)
| | - Arturo Galván-Hernández
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Col. Chamilpa, Cuernavaca 62210, Morelos, Mexico; (T.H.-R.); (L.D.-P.); (A.G.-H.)
| | - Anahi Rodríguez-López
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62210, Morelos, Mexico; (A.R.-L.); (L.R.-F.)
| | - Lourdes Rodríguez-Fragoso
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62210, Morelos, Mexico; (A.R.-L.); (L.R.-F.)
| | - Iván Ortega-Blake
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Col. Chamilpa, Cuernavaca 62210, Morelos, Mexico; (T.H.-R.); (L.D.-P.); (A.G.-H.)
- Correspondence: ; Tel.: +52-77-7329-1762
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5
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Sultanova GG, Kasumov KM. Physical and Chemical Properties of Erythrocyte Membranes in Interaction with Polyene Antibiotics in the Field of Ultrasonic Waves. Biophysics (Nagoya-shi) 2021. [DOI: 10.1134/s0006350921020238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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6
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Dong PT, Zong C, Dagher Z, Hui J, Li J, Zhan Y, Zhang M, Mansour MK, Cheng JX. Polarization-sensitive stimulated Raman scattering imaging resolves amphotericin B orientation in Candida membrane. SCIENCE ADVANCES 2021; 7:7/2/eabd5230. [PMID: 33523971 PMCID: PMC7787481 DOI: 10.1126/sciadv.abd5230] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 11/11/2020] [Indexed: 05/10/2023]
Abstract
Ergosterol-targeting amphotericin B (AmB) is the first line of defense for life-threatening fungal infections. Two models have been proposed to illustrate AmB assembly in the cell membrane; one is the classical ion channel model in which AmB vertically forms transmembrane tunnel and the other is a recently proposed sterol sponge model where AmB is laterally adsorbed onto the membrane surface. To address this controversy, we use polarization-sensitive stimulated Raman scattering from fingerprint C═C stretching vibration to visualize AmB, ergosterol, and lipid in single fungal cells. Intracellular lipid droplet accumulation in response to AmB treatment is found. AmB is located in membrane and intracellular droplets. In the 16 strains studied, AmB residing inside cell membrane was highly ordered, and its orientation is primarily parallel to phospholipid acyl chains, supporting the ion channel model. Label-free imaging of AmB and chemical contents offers an analytical platform for developing low-toxicity, resistance-refractory antifungal agents.
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Affiliation(s)
- Pu-Ting Dong
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Cheng Zong
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Zeina Dagher
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Jie Hui
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Junjie Li
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Yuewei Zhan
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Meng Zhang
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Michael K Mansour
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Ji-Xin Cheng
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA.
- Photonics Center, Boston University, Boston, MA 02215, USA
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
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7
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Zhang J, Xu H, Dong Y, Chen M, Zhang Y, Shangguan W, Zhao W, Feng J. Design, synthesis and biological evaluation of a novel N-aminoacyl derivative of amphotericin B methyl ester as an antifungal agent. Eur J Med Chem 2020; 211:113104. [PMID: 33360798 DOI: 10.1016/j.ejmech.2020.113104] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 12/08/2020] [Accepted: 12/11/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Jinhua Zhang
- School of Pharmacy, Fudan University, Shanghai, China
| | - Hongjiang Xu
- China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Yuanzhen Dong
- Shanghai Duomirui Biotechnology Ltd., Shanghai, China
| | - Minwei Chen
- Shanghai Duomirui Biotechnology Ltd., Shanghai, China
| | - You Zhang
- China State Institute of Pharmaceutical Industry, Shanghai, China
| | | | - Wenjie Zhao
- China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Jun Feng
- China State Institute of Pharmaceutical Industry, Shanghai, China; Shanghai Duomirui Biotechnology Ltd., Shanghai, China.
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8
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Alonso L, Mendanha SA, Dorta ML, Alonso A. Analysis of the Interactions of Amphotericin B with the Leishmania Plasma Membrane Using EPR Spectroscopy. J Phys Chem B 2020; 124:10157-10165. [DOI: 10.1021/acs.jpcb.0c07721] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Lais Alonso
- Instituto Federal Goiano, Trindade 76300-000, Goiás, Brazil
- Instituto de Física, Universidade Federal de Goiás, Goiânia 74690-900, Goiás, Brazil
| | | | - Miriam Leandro Dorta
- Instituto de Patologia Tropical e Saúde Publica, Departamento de Imunologia e Patologia Geral, Universidade Federal de Goiás, Goiânia 74690-900, Goiás, Brazil
| | - Antonio Alonso
- Instituto de Física, Universidade Federal de Goiás, Goiânia 74690-900, Goiás, Brazil
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9
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Dietel L, Kalie L, Heerklotz H. Lipid Scrambling Induced by Membrane-Active Substances. Biophys J 2020; 119:767-779. [PMID: 32738218 DOI: 10.1016/j.bpj.2020.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/03/2020] [Accepted: 07/07/2020] [Indexed: 11/26/2022] Open
Abstract
The functional roles of the lipid asymmetry of biomembranes are attracting increasing attention. This study characterizes the activity of surfactants to induce transmembrane flip-flop of lipids and thus "scramble" this asymmetry. Detergent-induced lipid scrambling of liposomes mimicking the charge asymmetry of bacterial membranes with 20 mol % of 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-rac-glycerol in the outer leaflet only was quantified by ζ-potential measurements for octaethylene glycol dodecyl ether (C12EO8), octyl glucoside (OG), and dodecyl maltoside. Membrane leakage was separately measured by the fluorescence lifetime-based calcein leakage assay and the onset of the membrane-to-micelle transition by isothermal titration calorimetry. Partition coefficients and partial molar areas were obtained as well. For the quickly membrane-permeant C12EO8 and OG, leakage proceeds at a rather sharp threshold content in the membrane, which is well below the onset of solubilization and little dependent on incubation time; it is accompanied by fast lipid scrambling. However, unlike leakage, flip-flop is a relaxation process that speeds up gradually from taking weeks in the detergent-free membrane to minutes or less in the leaking membrane. Hence, after 24 h of incubation, 10 mol % of C12EO8 or 50 mol % of OG in the membrane suffice for virtually complete lipid scrambling, whereas leakage remains below 10% for up to 14 mol % of C12EO8 and 88 mol % of OG. There is thus a concentration window in which lipid scrambling proceeds without leakage. This implies that lipid scrambling must be considered a possible mode of action of antimicrobial peptides and other membrane-active drugs or biomolecules. A related, detergent-based protocol for scrambling the lipid asymmetry of liposomes and maybe cells without compromising their overall integrity would be a very valuable tool to study functions of lipid asymmetry.
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Affiliation(s)
- Lisa Dietel
- Institute of Pharmaceutical Sciences, University of Freiburg, Freiburg, Germany.
| | - Louma Kalie
- Institute of Pharmaceutical Sciences, University of Freiburg, Freiburg, Germany
| | - Heiko Heerklotz
- Institute of Pharmaceutical Sciences, University of Freiburg, Freiburg, Germany; Signaling Research Centers BIOSS and CIBSS, University of Freiburg, Freiburg, Germany; Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada.
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Zhou L, Qiu T, Lv F, Liu L, Ying J, Wang S. Self-Assembled Nanomedicines for Anticancer and Antibacterial Applications. Adv Healthc Mater 2018; 7:e1800670. [PMID: 30080319 DOI: 10.1002/adhm.201800670] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/03/2018] [Indexed: 01/28/2023]
Abstract
Self-assembly strategies have been widely applied in the nanomedicine field, which provide a convenient approach for building various structures for delivery carriers. When cooperating with biomolecules, self-assembly systems have significant influence on the cell activity and life process and could be used for regulating nanodrug activity. In this review, self-assembled nanomedicines are introduced, including materials, encapsulation, and releasing strategies, where self-assembly strategies are involved. Furthermore, as a promising and emerging area for nanomedicine, in situ self-assembly of anticancer drugs and supramolecular antibiotic switches is also discussed about how to regulate drug activity. Selective pericellular assembly can block mass transformation of cancer cells inducing cell apoptosis, and the intracellular assembly can either cause cell death or effectively avoid drug elimination from cytosol of cancer cells because of the assembly-induced retention (AIR) effect. Host-guest interactions of drug and competitive molecules offer reversible regulations of antibiotic activity, which can reduce drug-resistance and inhibit the generation of drug-resistant bacteria. Finally, the challenges and development trend in the field are discussed.
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Affiliation(s)
- Lingyun Zhou
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- College of Chemistry; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Tian Qiu
- Department of Pathology; National Cancer Center/National Clinical Research Center for; Cancer/Cancer Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing 100021 P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Jianming Ying
- Department of Pathology; National Cancer Center/National Clinical Research Center for; Cancer/Cancer Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing 100021 P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- College of Chemistry; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
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11
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Characterization and mapping of secondary metabolites of Streptomyces sp. from caatinga by desorption electrospray ionization mass spectrometry (DESI–MS). Anal Bioanal Chem 2018; 410:7135-7144. [DOI: 10.1007/s00216-018-1315-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 07/17/2018] [Accepted: 08/07/2018] [Indexed: 11/25/2022]
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12
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Ludwig DB, de Camargo LEA, Khalil NM, Auler ME, Mainardes RM. Antifungal Activity of Chitosan-Coated Poly(lactic-co-glycolic) Acid Nanoparticles Containing Amphotericin B. Mycopathologia 2018; 183:659-668. [PMID: 29497926 DOI: 10.1007/s11046-018-0253-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 02/19/2018] [Indexed: 10/17/2022]
Abstract
Amphotericin B (AmB) is one of the most used drugs for the treatment of systemic fungal infections; however, the treatment causes several toxic manifestations, including nephrotoxicity and hemolytic anemia. Chitosan-coated poly(lactide-co-glycolide) (PLGA) nanoparticles containing AmB were developed with the aim to decrease AmB toxicity and propose the oral route for AmB delivery. In this work, the antifungal efficacy of chitosan-coated PLGA nanoparticles containing AmB was evaluated in 20 strains of fungus isolates from patients with vulvovaginal candidiasis (01 Candida glabrata and 03 Candida albicans), bloodstream infections (04 C. albicans and 01 C. tropicalis) and patients with urinary tract infection (04 Candida albicans, 02 Trichosporon asahii, 01 C. guilhermondii, 03 C. glabrata) and 01 Candida albicans ATCC 90028. Moreover, the cytotoxicity over erythrocytes was evaluated. The single-emulsion solvent evaporation method was suitable for obtaining chitosan-coated PGLA nanoparticles containing AmB. Nanoparticles were spherical in shape, presented mean particle size about 460 nm, positive zeta potential and encapsulation efficiency of 42%. Moreover, nanoparticles prolonged the AmB release. All the strains were susceptible to plain AmB and nanostructured AmB, according to EUCAST breakpoint version 8.1 (resistant > 1 μg/mL), using broth microdilution method. In C. albicans (urine, blood, and vulvovaginal secretion isolates, and 1 ATCC), the MIC value of AmB-loaded nanoparticles varied from 0.25 to 0.5 μg/mL and EUCAST varied from 0.03 to 0.5 μg/mL. In urine and vulvovaginal secretion isolates of C. glabrata, the MIC value of AmB-loaded nanoparticles varied from 0.25 to 0.5 μg/mL and EUCAST varied from 0.03 to 0.015 μg/mL. In urine isolates of C. guilhermondii, the MIC value of AmB-loaded nanoparticles was 0.12 μg/mL and EUCAST was 0.06 μg/mL. In blood isolates of C. tropicalis, the MIC value of AmB-loaded nanoparticles was 0.5 μg/mL and EUCAST was 0.25 μg/mL. Finally, in urine isolates of T asahii, the MIC value of AmB-loaded nanoparticles was 1 μg/mL and EUCAST varied from 0.5 to 1 μg/mL. In the cytotoxicity assay, plain AmB was highly hemolytic (100% in 24 h) while AmB-loaded chitosan/PLGA nanoparticles presented negligible hemolysis.
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Affiliation(s)
- Daniel Brustolin Ludwig
- Department of Pharmacy, Universidade Estadual do Centro-Oeste/UNICENTRO, Rua Simeão Camargo Varela de Sá 03, Guarapuava, PR, 85040-080, Brazil.,Faculdade Guairacá, Rua XV de Novembro, 7050, Guarapuava, PR, 85010-000, Brazil
| | - Luciana Erzinger Alves de Camargo
- Department of Pharmacy, Universidade Estadual do Centro-Oeste/UNICENTRO, Rua Simeão Camargo Varela de Sá 03, Guarapuava, PR, 85040-080, Brazil.,Faculdade Guairacá, Rua XV de Novembro, 7050, Guarapuava, PR, 85010-000, Brazil
| | - Najeh Maissar Khalil
- Department of Pharmacy, Universidade Estadual do Centro-Oeste/UNICENTRO, Rua Simeão Camargo Varela de Sá 03, Guarapuava, PR, 85040-080, Brazil
| | - Marcos Ereno Auler
- Department of Pharmacy, Universidade Estadual do Centro-Oeste/UNICENTRO, Rua Simeão Camargo Varela de Sá 03, Guarapuava, PR, 85040-080, Brazil
| | - Rubiana Mara Mainardes
- Department of Pharmacy, Universidade Estadual do Centro-Oeste/UNICENTRO, Rua Simeão Camargo Varela de Sá 03, Guarapuava, PR, 85040-080, Brazil.
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13
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Efimova SS, Tevyashova AN, Olsufyeva EN, Bykov EE, Ostroumova OS. Pore-forming activity of new conjugate antibiotics based on amphotericin B. PLoS One 2017; 12:e0188573. [PMID: 29186162 PMCID: PMC5706719 DOI: 10.1371/journal.pone.0188573] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 11/09/2017] [Indexed: 01/02/2023] Open
Abstract
A series of amides of the antifungal antibiotic amphotericin B (AmB) and its conjugates with benzoxaboroles was tested to determine whether they form pores in lipid bilayers and to compare their channel characteristics. The tested derivatives produced pores of larger amplitude and shorter lifetime than those of the parent antibiotic. The pore conductance was related to changes in the partial charge of the hydrogens of the hydroxyl groups in the lactone ring that determined the anion coordination in the channel. Neutralization of one of the polar group charges in the AmB head during chemical modification produced a pronounced effect by diminishing the dwell time of the polyene channel compared to modification of both groups. In this study, compounds that had a modification of one carboxyl or amino group were less effective in initializing phase separation in POPC-membranes compared to derivatives that had modifications of both polar groups as well as the parent antibiotic. The effects were attributed to the restriction of the aggregation process by electrical repulsion between charged derivatives in contrast to neutral compounds. The significant correlation between the ability of derivatives to increase the permeability of model membranes—causing the appearance of single channels in lipid bilayers or inducing calcein leakage from unilamellar vesicles—and the minimal inhibitory concentration indicated that the antifungal effect of the conjugates was due to pore formation in the membranes of target cells.
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Affiliation(s)
- Svetlana S. Efimova
- Group of Ion Channel Modeling, Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia
- * E-mail:
| | - Anna N. Tevyashova
- Laboratory of Chemical Transformation of Antibiotics, Gause Institute of New Antibiotics of the Russian Academy of Medical Sciences, Moscow, Russia
- D.I. Mendeleev University of Chemical Technology of Russia, Moscow, Russia
| | - Evgenia N. Olsufyeva
- Laboratory of Chemical Transformation of Antibiotics, Gause Institute of New Antibiotics of the Russian Academy of Medical Sciences, Moscow, Russia
| | - Evgeny E. Bykov
- Laboratory of Chemical Transformation of Antibiotics, Gause Institute of New Antibiotics of the Russian Academy of Medical Sciences, Moscow, Russia
| | - Olga S. Ostroumova
- Group of Ion Channel Modeling, Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia
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14
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Zia Q, Mohammad O, Rauf MA, Khan W, Zubair S. Biomimetically engineered Amphotericin B nano-aggregates circumvent toxicity constraints and treat systemic fungal infection in experimental animals. Sci Rep 2017; 7:11873. [PMID: 28928478 PMCID: PMC5605718 DOI: 10.1038/s41598-017-11847-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 08/15/2017] [Indexed: 12/30/2022] Open
Abstract
Biomimetic synthesis of nanoparticles offers a convenient and bio friendly approach to fabricate complex structures with sub-nanometer precision from simple precursor components. In the present study, we have synthesized nanoparticles of Amphotericin B (AmB), a potent antifungal agent, using Aloe vera leaf extract. The synthesis of AmB nano-assemblies (AmB-NAs) was established employing spectro-photometric and electron microscopic studies, while their crystalline nature was established by X-ray diffraction. AmB-nano-formulation showed much higher stability in both phosphate buffer saline and serum and exhibit sustained release of parent drug over an extended time period. The as-synthesized AmB-NA possessed significantly less haemolysis as well as nephrotoxicity in the host at par with Ambisome®, a liposomized AmB formulation. Interestingly, the AmB-NAs were more effective in killing various fungal pathogens including Candida spp. and evoked less drug related toxic manifestations in the host as compared to free form of the drug. The data of the present study suggest that biomimetically synthesized AmB-NA circumvent toxicity issues and offer a promising approach to eliminate systemic fungal infections in Balb/C mice.
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Affiliation(s)
- Qamar Zia
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Owais Mohammad
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Mohd Ahmar Rauf
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Wasi Khan
- Department of Applied Physics, Aligarh Muslim University, Aligarh, India
| | - Swaleha Zubair
- Women's College, Aligarh Muslim University, Aligarh, India.
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15
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Falcón-González JM, Jiménez-Domínguez G, Ortega-Blake I, Carrillo-Tripp M. Multi-Phase Solvation Model for Biological Membranes: Molecular Action Mechanism of Amphotericin B. J Chem Theory Comput 2017; 13:3388-3397. [DOI: 10.1021/acs.jctc.7b00337] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. M. Falcón-González
- Laboratorio
de la Diversidad Biomolecular, Centro de Investigación y de Estudios Avanzados Unidad Monterrey, Vía del Conocimiento 201,
Parque PIIT, C.P. 66600, Apodaca, Nuevo León, México
- Unidad
Profesional Interdisciplinaria de Ingeniería Campus Guanajuato, Instituto Politécnico Nacional, Av. Mineral de Valenciana No. 200,
Col. Fraccionamiento Industrial Puerto Interior, C.P. 36275, Silao de la Victoria, Guanajuato, México
| | - G. Jiménez-Domínguez
- Laboratorio
de la Diversidad Biomolecular, Centro de Investigación y de Estudios Avanzados Unidad Monterrey, Vía del Conocimiento 201,
Parque PIIT, C.P. 66600, Apodaca, Nuevo León, México
| | - I. Ortega-Blake
- Instituto
de Ciencias Físicas, Universidad Nacional Autónoma de México, Apartado Postal 48-3, C.P. 62251, Cuernavaca, Morelos, México
| | - M. Carrillo-Tripp
- Laboratorio
de la Diversidad Biomolecular, Centro de Investigación y de Estudios Avanzados Unidad Monterrey, Vía del Conocimiento 201,
Parque PIIT, C.P. 66600, Apodaca, Nuevo León, México
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16
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17
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Pereira JV, Freires IA, Castilho AR, da Cunha MG, Alves HDS, Rosalen PL. Antifungal potential of Sideroxylon obtusifolium and Syzygium cumini and their mode of action against Candida albicans. PHARMACEUTICAL BIOLOGY 2016; 54:2312-2319. [PMID: 26987037 DOI: 10.3109/13880209.2016.1155629] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Context The emergence of resistant pathogens and toxicity of antifungals have encouraged an active search for novel candidates to manage Candida biofilms. Objective In this study, the little known species Sideroxylon obtusifolium T.D. Penn (Sapotacea) and Syzygium cumini (L.) Skeels (Myrtaceae), from the Caatinga biome in Brazil were chemically characterized and explored for their antifungal potential against C. albicans. Materials and methods We determined the effects of hydroalcoholic extracts/fractions upon fungal growth (minimum inhibitory and fungicidal concentrations, MIC/MFC), biofilm morphology (scanning electron microscopy) and viability (confocal laser scanning microscopy), proposed their mode of action (sorbitol and ergosterol assays), and finally investigated their effects against macrophage and keratinocyte cells in a cell-based assay. Data were analysed using one-way analysis of variance with Tukey-Kramer post-test (α = 0.05). Results The n-butanol (Nb) fraction from S. obtusifolium and S. cumini extract (Sc) showed flavonoids (39.11 ± 6.62 mg/g) and saponins (820.35 ± 225.38 mg/g), respectively, in their chemical composition and demonstrated antifungal activity, with MICs of 62.5 and 125 μg/mL, respectively. Nb and Sc may complex with ergosterol as there was a 4-16-fold increase in MICs in the presence of exogenous ergosterol, leading to disrupted permeability of cell membrane. Deleterious effects were observed on morphology and viability of treated biofilms from concentrations as low as their MICs and higher. Sc was not toxic to macrophages and keratinocytes at these concentrations (p > 0.05), unlike Nb. Conclusions Nb and Sc demonstrated considerable antifungal activity and should be further investigated as potential alternative candidates to treat Candida biofilms.
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Affiliation(s)
| | - Irlan Almeida Freires
- b Division of Pharmacology, Anesthesiology and Therapeutics, Department of Physiological Sciences , Piracicaba Dental School, University of Campinas , Piracicaba , SP , Brazil
| | - Aline Rogéria Castilho
- b Division of Pharmacology, Anesthesiology and Therapeutics, Department of Physiological Sciences , Piracicaba Dental School, University of Campinas , Piracicaba , SP , Brazil
| | - Marcos Guilherme da Cunha
- b Division of Pharmacology, Anesthesiology and Therapeutics, Department of Physiological Sciences , Piracicaba Dental School, University of Campinas , Piracicaba , SP , Brazil
| | - Harley da Silva Alves
- c Department of Pharmacy , State University of Paraiba , Campina Grande , PB , Brazil
| | - Pedro Luiz Rosalen
- b Division of Pharmacology, Anesthesiology and Therapeutics, Department of Physiological Sciences , Piracicaba Dental School, University of Campinas , Piracicaba , SP , Brazil
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18
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Nakagawa Y, Umegawa Y, Matsushita N, Yamamoto T, Tsuchikawa H, Hanashima S, Oishi T, Matsumori N, Murata M. The Structure of the Bimolecular Complex between Amphotericin B and Ergosterol in Membranes Is Stabilized by Face-to-Face van der Waals Interaction with Their Rigid Cyclic Cores. Biochemistry 2016; 55:3392-402. [DOI: 10.1021/acs.biochem.6b00193] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yasuo Nakagawa
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yuichi Umegawa
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Naohiro Matsushita
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Tomoya Yamamoto
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Hiroshi Tsuchikawa
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Shinya Hanashima
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Tohru Oishi
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Nobuaki Matsumori
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Michio Murata
- Department
of Chemistry,
Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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19
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Hamley IW, Kirkham S, Kowalczyk RM, Castelletto V, Reza M, Ruokolainen J. Self-assembly of the anti-fungal polyene amphotericin B into giant helically-twisted nanotapes. Chem Commun (Camb) 2015; 51:17680-3. [PMID: 26499063 DOI: 10.1039/c5cc08224b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The amphiphilic polyene amphotericin B, a powerful treatment for systemic fungal infections, is shown to exhibit a critical aggregation concentration, and to form giant helically-twisted nanostructures via self-assembly in basic aqueous solution.
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Affiliation(s)
- Ian William Hamley
- School of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading, Berkshire RG6 6AD, UK.
| | - Steven Kirkham
- School of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading, Berkshire RG6 6AD, UK.
| | - Radoslaw M Kowalczyk
- School of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading, Berkshire RG6 6AD, UK.
| | - Valeria Castelletto
- School of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading, Berkshire RG6 6AD, UK.
| | - Mehedi Reza
- Dept. of Applied Physics, Aalto University School of Science, P. O. Box 15100, FI-00076, Finland
| | - Janne Ruokolainen
- Dept. of Applied Physics, Aalto University School of Science, P. O. Box 15100, FI-00076, Finland
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20
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Boukari K, Balme S, Janot JM, Picaud F. Towards New Insights in the Sterol/Amphotericin Nanochannels Formation: A Molecular Dynamic Simulation Study. J Membr Biol 2015; 249:261-70. [PMID: 26700625 DOI: 10.1007/s00232-015-9865-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 12/11/2015] [Indexed: 10/22/2022]
Abstract
Amphotericin B (AmB) is a well-known polyene which self-organizes into membrane cell in order to cause the cell death. Its specific action towards fungal cell is not fully understood but was proved to become from sterol composition. The mechanism was shown experimentally to require the formation of stable sterol/polyene couples which could then organize in a nanochannel. This would allow the leakage of ions responsible for the death of fungal cells, only. In this present study, we investigate the arrangement of AmB/sterols in biological membrane using molecular dynamic simulations in order to understand the role of the sterol structure on the antifungal action of the polyene. We show in particular that the nanochannels tend to close up when cell was composed with cholesterol (animal cell) due to strong interaction between amphotericin and sterol. On the other side, with ergosterol (fungal cell) the largest interactions between amphotericin and lipid membrane lead to the appearance of large hole that could favor the important leakage of ions and thus, the fungal cell death. This work appears as a good complement in the extensive studies linked to the understanding of the antifungal molecules in membrane cells.
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Affiliation(s)
- Khaoula Boukari
- Laboratoire de Nanomédecine, Imagerie et Thérapeutique, EA 4662, Université Franche-Comté, Centre Hospitalier Universitaire de Besançon, UFR ST, 16 route de Gray, 25030, Besançon Cedex, France
| | - Sébastien Balme
- Institut Européen des Membranes, UMR5635 CNRS-UM2-ENSCM, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France
| | - Jean-Marc Janot
- Institut Européen des Membranes, UMR5635 CNRS-UM2-ENSCM, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France
| | - Fabien Picaud
- Laboratoire de Nanomédecine, Imagerie et Thérapeutique, EA 4662, Université Franche-Comté, Centre Hospitalier Universitaire de Besançon, UFR ST, 16 route de Gray, 25030, Besançon Cedex, France.
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21
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New Insights Regarding Yeast Survival following Exposure to Liposomal Amphotericin B. Antimicrob Agents Chemother 2015; 59:6181-7. [PMID: 26248358 DOI: 10.1128/aac.00575-15] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 07/17/2015] [Indexed: 11/20/2022] Open
Abstract
In vitro resistance to amphotericin B is an extremely rare event among pathogenic yeasts. However, in vivo response is sometimes reduced, resulting in an unfavorable outcome. Such adverse outcomes might be related to subfungicidal plasma concentrations. We aimed to clarify the mechanisms of liposomal amphotericin B (AMB-L; AmBisome)-induced lesions and the mechanisms responsible for yeast cell recovery following exposure at plasma concentrations. The physiological statuses developing following exposure to AMB-L at simulated plasma concentrations (20 to 0.1 mg/liter) and at a constant concentration (3 mg/liter) were assessed in a 24-h time course assay. Time-kill experiments also were carried out under the same AMB-L treatment conditions. Our results suggest that yeast cells develop compensatory responses related to membrane polarization, metabolic activity, and reactive oxygen species (ROS) production after exposure to high plasma concentrations (20 to 5 mg/liter) during the first 6 h; in the remaining 18 h, when exposed to lower concentrations, cells reveal almost full recovery with no evidence of fungicidal activity. In contrast, whenever cells are exposed to a constant concentration above the MIC, despite initially exhibiting compensatory stress responses, soon afterwards they exhibit membrane depolarization, a decrease of metabolic activity, increasing ROS production, and lastly, programmed cell death and necrosis, resulting in succumbing to AMB-L fungicidal effects. This study may represent a step forward in the support of AMB-L use for clinical treatment of invasive fungal infections, since it demonstrates the importance of maintaining levels of AMB-L above the MIC in plasma and tissues to ensure it produces its fungicidal effects.
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22
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de Ghellinck A, Fragneto G, Laux V, Haertlein M, Jouhet J, Sferrazza M, Wacklin H. Lipid polyunsaturation determines the extent of membrane structural changes induced by Amphotericin B in Pichia pastoris yeast. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:2317-25. [PMID: 26055896 DOI: 10.1016/j.bbamem.2015.06.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/20/2015] [Accepted: 06/04/2015] [Indexed: 12/18/2022]
Abstract
The activity of the potent but highly toxic antifungal drug Amphotericin B (AmB), used intravenously to treat systemic fungal and parasitic infections, is widely accepted to result from its specific interaction with the fungal sterol ergosterol. While the effect of sterols on AmB activity has been intensely investigated, the role of membrane phospholipid composition has largely been ignored, and structural studies of native membranes have been hampered by their complex and disordered nature. We show for the first time that the structure of fungal membranes derived from Pichia pastoris yeast depends on the degree of lipid polyunsaturation, which has an impact on the structural consequences of AmB activity. AmB inserts in yeast membranes even in the absence of ergosterol, and forms an extra-membraneous layer whose thickness is resolved to be 4-5 nm. In ergosterol-containing membranes, AmB insertion is accompanied by ergosterol extraction into this layer. The AmB-sponge mediated depletion of ergosterol from P. pastoris membranes gives rise to a significant membrane thinning effect that depends on the degree of lipid polyunsaturation. The resulting hydrophobic mismatch is likely to interfere with a much broader range of membrane protein functions than those directly involving ergosterol, and suggests that polyunsaturated lipids could boost the efficiency of AmB. Furthermore, a low degree of lipid polyunsaturation leads to least AmB insertion and may protect host cells against the toxic effects of AmB. These results provide a new framework based on lipid composition and membrane structure through which we can understand its antifungal action and develop better treatments.
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Affiliation(s)
- Alexis de Ghellinck
- Institut Laue-Langevin, 71 av des Martyrs, P.O. Box 156, 38000 Grenoble, France; Departement de Physique, Faculté des Sciences, Université Libre de Bruxelles, Bd du Triomphe CP223, 1050 Bruxelles, Belgium
| | - Giovanna Fragneto
- Institut Laue-Langevin, 71 av des Martyrs, P.O. Box 156, 38000 Grenoble, France
| | - Valerie Laux
- Institut Laue-Langevin, 71 av des Martyrs, P.O. Box 156, 38000 Grenoble, France
| | - Michael Haertlein
- Institut Laue-Langevin, 71 av des Martyrs, P.O. Box 156, 38000 Grenoble, France
| | - Juliette Jouhet
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS/CEA/Univ. Grenoble Alpes/INRA, 38000 Grenoble, France
| | - Michele Sferrazza
- Departement de Physique, Faculté des Sciences, Université Libre de Bruxelles, Bd du Triomphe CP223, 1050 Bruxelles, Belgium
| | - Hanna Wacklin
- European Spallation Source ESS AB, P.O. Box 176, 22100 Lund, Sweden; Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark.
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Modifiers of membrane dipole potentials as tools for investigating ion channel formation and functioning. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2015; 315:245-97. [PMID: 25708465 DOI: 10.1016/bs.ircmb.2014.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrostatic fields generated on and within biological membranes play a fundamental role in key processes in cell functions. The role of the membrane dipole potential is of particular interest because of its powerful impact on membrane permeability and lipid-protein interactions, including protein insertion, oligomerization, and function. The membrane dipole potential is defined by the orientation of electric dipoles of lipid headgroups, fatty acid carbonyl groups, and membrane-adsorbed water. As a result, the membrane interior is several hundred millivolts more positive than the external aqueous phase. This potential decrease depends on the lipid, and especially sterol, composition of the membrane. The adsorption of certain electroneutral molecules known as dipole modifiers may also lead to significant changes in the magnitude of the potential decrease. These agents are widely used to study the effects of the dipole potential on membrane transport. This review presents a critical analysis of a variety of data from studies dedicated to ion channel formation and functioning in membranes with different dipole potentials. The types of ion channels found in cellular membranes and pores formed by antimicrobial agents and toxins in artificial lipid membranes are summarized. The mechanisms underlying the influence of the membrane dipole potential on ion channel activity, including dipole-dipole and charge-dipole interactions in the pores and in membranes, are discussed. A hypothesis, in which lipid rafts in both model and cellular membranes also modulate ion channel activity by virtue of an increased or decreased dipole potential, is also considered.
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24
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Enhanced therapeutic efficacy of lipophilic amphotericin B against Candida albicans with amphiphilic poly(N-isopropylacrylamide) nanogels. Macromol Res 2014. [DOI: 10.1007/s13233-014-2162-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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In situ detection of antibiotic amphotericin B produced in Streptomyces nodosus using Raman microspectroscopy. Mar Drugs 2014; 12:2827-39. [PMID: 24828290 PMCID: PMC4052319 DOI: 10.3390/md12052827] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 04/17/2014] [Accepted: 04/24/2014] [Indexed: 11/19/2022] Open
Abstract
The study of spatial distribution of secondary metabolites within microbial cells facilitates the screening of candidate strains from marine environments for functional metabolites and allows for the subsequent assessment of the production of metabolites, such as antibiotics. This paper demonstrates the first application of Raman microspectroscopy for in situ detection of the antifungal antibiotic amphotericin B (AmB) produced by actinomycetes—Streptomyces nodosus. Raman spectra measured from hyphae of S. nodosus show the specific Raman bands, caused by resonance enhancement, corresponding to the polyene chain of AmB. In addition, Raman microspectroscopy enabled us to monitor the time-dependent change of AmB production corresponding to the growth of mycelia. The Raman images of S. nodosus reveal the heterogeneous distribution of AmB within the mycelia and individual hyphae. Moreover, the molecular association state of AmB in the mycelia was directly identified by observed Raman spectral shifts. These findings suggest that Raman microspectroscopy could be used for in situ monitoring of antibiotic production directly in marine microorganisms with a method that is non-destructive and does not require labeling.
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Anderson TM, Clay MC, Cioffi AG, Diaz KA, Hisao GS, Tuttle MD, Nieuwkoop AJ, Comellas G, Maryum N, Wang S, Uno BE, Wildeman EL, Gonen T, Rienstra CM, Burke MD. Amphotericin forms an extramembranous and fungicidal sterol sponge. Nat Chem Biol 2014; 10:400-6. [PMID: 24681535 PMCID: PMC3992202 DOI: 10.1038/nchembio.1496] [Citation(s) in RCA: 310] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 02/20/2014] [Indexed: 01/14/2023]
Abstract
For over 50 years, amphotericin has remained the powerful but highly toxic last line of defense in treating life-threatening fungal infections in humans with minimal development of microbial resistance. Understanding how this small molecule kills yeast is thus critical for guiding development of derivatives with an improved therapeutic index and other resistance-refractory antimicrobial agents. In the widely accepted ion channel model for its mechanism of cytocidal action, amphotericin forms aggregates inside lipid bilayers that permeabilize and kill cells. In contrast, we report that amphotericin exists primarily in the form of large, extramembranous aggregates that kill yeast by extracting ergosterol from lipid bilayers. These findings reveal that extraction of a polyfunctional lipid underlies the resistance-refractory antimicrobial action of amphotericin and suggests a roadmap for separating its cytocidal and membrane-permeabilizing activities. This new mechanistic understanding is also guiding development of what are to our knowledge the first derivatives of amphotericin that kill yeast but not human cells.
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Affiliation(s)
- Thomas M Anderson
- 1] Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. [2]
| | - Mary C Clay
- 1] Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. [2]
| | - Alexander G Cioffi
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Katrina A Diaz
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Grant S Hisao
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Marcus D Tuttle
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Andrew J Nieuwkoop
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Gemma Comellas
- Center for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Nashrah Maryum
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Shu Wang
- 1] Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. [2] Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Brice E Uno
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Erin L Wildeman
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Tamir Gonen
- Howard Hughes Medical Institute, Janelia Farm Research Campus, Ashburn, Virginia, USA
| | - Chad M Rienstra
- 1] Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. [2] Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. [3] Center for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Martin D Burke
- 1] Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. [2] Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. [3] Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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The interaction of dipole modifiers with amphotericin-ergosterol complexes. Effects of phospholipid and sphingolipid membrane composition. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2014; 43:207-15. [DOI: 10.1007/s00249-014-0946-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 01/30/2014] [Accepted: 02/05/2014] [Indexed: 10/25/2022]
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Gupta PK, Jaiswal AK, Kumar V, Verma A, Dwivedi P, Dube A, Mishra PR. Covalent Functionalized Self-Assembled Lipo-Polymerosome Bearing Amphotericin B for Better Management of Leishmaniasis and Its Toxicity Evaluation. Mol Pharm 2014; 11:951-63. [DOI: 10.1021/mp400603t] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Pramod K. Gupta
- Pharmaceutics Division and ‡Parasitology Division, Council of Scientific and Industrial Research-Central Drug Research Institute, B 10/1, Sector
10, Jankipuram Extension, Sitapur Road, Lucknow, India 226031
| | - Anil K. Jaiswal
- Pharmaceutics Division and ‡Parasitology Division, Council of Scientific and Industrial Research-Central Drug Research Institute, B 10/1, Sector
10, Jankipuram Extension, Sitapur Road, Lucknow, India 226031
| | - Vivek Kumar
- Pharmaceutics Division and ‡Parasitology Division, Council of Scientific and Industrial Research-Central Drug Research Institute, B 10/1, Sector
10, Jankipuram Extension, Sitapur Road, Lucknow, India 226031
| | - Ashwni Verma
- Pharmaceutics Division and ‡Parasitology Division, Council of Scientific and Industrial Research-Central Drug Research Institute, B 10/1, Sector
10, Jankipuram Extension, Sitapur Road, Lucknow, India 226031
| | - Pankaj Dwivedi
- Pharmaceutics Division and ‡Parasitology Division, Council of Scientific and Industrial Research-Central Drug Research Institute, B 10/1, Sector
10, Jankipuram Extension, Sitapur Road, Lucknow, India 226031
| | - Anuradha Dube
- Pharmaceutics Division and ‡Parasitology Division, Council of Scientific and Industrial Research-Central Drug Research Institute, B 10/1, Sector
10, Jankipuram Extension, Sitapur Road, Lucknow, India 226031
| | - Prabhat R. Mishra
- Pharmaceutics Division and ‡Parasitology Division, Council of Scientific and Industrial Research-Central Drug Research Institute, B 10/1, Sector
10, Jankipuram Extension, Sitapur Road, Lucknow, India 226031
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Les KA, Mohamed-Ahmed AHA, Balan S, Choi JW, Martin D, Yardley V, Powell K, Godwin A, Brocchini S. Poly(methacrylic acid) complexation of amphotericin B to treat neglected diseases. Polym Chem 2014. [DOI: 10.1039/c3py01051a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jameson LP, Dzyuba SV. Circular dichroism studies on intermolecular interactions of amphotericin B in ionic liquid-rich environments. Chirality 2013; 25:427-32. [PMID: 23695916 DOI: 10.1002/chir.22142] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Accepted: 11/16/2012] [Indexed: 11/12/2022]
Abstract
Aggregation of amphotericin B (AmB) in an ionic liquid-rich environment was investigated using circular dichroism (CD) spectroscopy. It was found that nature of the ionic liquids' anion had a strong impact not only on the aggregation of AmB, but more importantly on the nature of AmB aggregates, as observed in the asymmetry of the exciton couplet of the aggregate in CD spectra. Unique CD signals for AmB aggregates were observed in three different 1-butyl-3-methylimidazolium ionic liquid solutions: [C4 -mim]Br favored the formation of AmB aggregates that were similar to those found in water, whereas [C4 -mim]BF4 and [C4 -mim]NO3 produced AmB aggregates that were different from each other and those found in water. The obtained results suggest that the designer solvent ability of ionic liquids could be expanded to address numerous intermolecular processes.
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Affiliation(s)
- Laramie P Jameson
- Department of Chemistry, Texas Christian University, Fort Worth, TX 76129, USA
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Mohamed-Ahmed AHA, Les KA, Seifert K, Croft SL, Brocchini S. Noncovalent complexation of amphotericin-B with Poly(α-glutamic acid). Mol Pharm 2013; 10:940-50. [PMID: 23234235 DOI: 10.1021/mp300339p] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A noncovalent complex of amphotericin B (AmB) and poly(α-glutamic acid) (PGA) was prepared to develop a safe and stable formulation for the treatment of leishmaniasis. The loading of AmB in the complex was in the range of ∼20-50%. AmB was in a highly aggregated state with an aggregation ratio often above 2.0. This complex (AmB-PGA) was shown to be stable and to have reduced toxicity to human red blood cells and KB cells compared to the parent compound; cell viability was not affected at an AmB concentration as high as 50 and 200 μg/mL respectively. This AmB-PGA complex retained AmB activity against intracellular Leishmania major amastigotes in the differentiated THP-1 cells with an EC50 of 0.07 ± 0.03-0.08 ± 0.01 μg/mL, which is similar to Fungizone (EC50 of 0.06 ± 0.01 μg/mL). The in vitro antileishmanial activity of the complex against Leishmania donovani was retained after storage at 37 °C for 7 days in the form of a solution (EC50 of 0.27 ± 0.03 to 0.35 ± 0.04 μg/mL) and for 30 days as a solid (EC50 of 0.41 ± 0.07 to 0.63 ± 0.25 μg/mL). These encouraging results indicate that the AmB-PGA complex has the potential for further development.
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Affiliation(s)
- Abeer H A Mohamed-Ahmed
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
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Mohamed-Ahmed AHA, Les KA, Croft SL, Brocchini S. Preparation and characterisation of amphotericin B-copolymer complex for the treatment of leishmaniasis. Polym Chem 2013. [DOI: 10.1039/c2py20425h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Umegawa Y, Nakagawa Y, Tahara K, Tsuchikawa H, Matsumori N, Oishi T, Murata M. Head-to-tail interaction between amphotericin B and ergosterol occurs in hydrated phospholipid membrane. Biochemistry 2011; 51:83-9. [PMID: 22129239 DOI: 10.1021/bi2012542] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Amphotericin B (AmB) is thought to exert its antifungal activity by forming an ion-channel assembly in the presence of ergosterol. In the present study we aimed to elucidate the mode of molecular interactions between AmB and ergosterol in hydrated phospholipid bilayers using the rotational echo double resonance (REDOR) spectra. We first performed (13)C{(19)F}REDOR experiments with C14-(19)F-labeled AmB and biosynthetically (13)C-labeled ergosterol and implied that both "head-to-head" and "head-to-tail" orientations occur for AmB-ergosterol interaction in the bilayers. To further confirm the "head-to-tail" pairing, (13)C-labeled ergosterol at the dimethyl terminus (C26/C27) was synthesized and subjected to the REDOR measurements. The spectra unambiguously demonstrated the presence of a "head-to-tail" orientation for AmB-ergosterol pairing. In order to obtain information on the position of the dimethyl terminus of ergosterol in membrane, (13)C{(31)P}REDOR were carried out using the labeled ergosterol and the phosphorus atom of a POPC headgroup. Significant REDOR dephasing was observed at the C26/C27 signal of ergosterol in the presence of AmB, but not in the absence of AmB, clearly indicating that the side-chain terminus of ergosterol in the AmB complex comes close to the bilayer surface.
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Affiliation(s)
- Yuichi Umegawa
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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Antifungal resistance and new strategies to control fungal infections. Int J Microbiol 2011; 2012:713687. [PMID: 22187560 PMCID: PMC3236459 DOI: 10.1155/2012/713687] [Citation(s) in RCA: 260] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Accepted: 09/06/2011] [Indexed: 11/28/2022] Open
Abstract
Despite improvement of antifungal therapies over the last 30 years, the phenomenon of antifungal resistance is still of major concern in clinical practice. In the last 10 years the molecular mechanisms underlying this phenomenon were extensively unraveled. In this paper, after a brief overview of currently available antifungals, molecular mechanisms of antifungal resistance will be detailed. It appears that major mechanisms of resistance are essential due to the deregulation of antifungal resistance effector genes. This deregulation is a consequence of point mutations occurring in transcriptional regulators of these effector genes. Resistance can also follow the emergence of point mutations directly in the genes coding antifungal targets. In addition we further describe new strategies currently undertaken to discover alternative therapy targets and antifungals. Identification of new antifungals is essentially achieved by the screening of natural or synthetic chemical compound collections. Discovery of new putative antifungal targets is performed through genome-wide approaches for a better understanding of the human pathogenic fungi biology.
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Oliveira TR, Benatti CR, Lamy MT. Structural characterization of the interaction of the polyene antibiotic Amphotericin B with DODAB bicelles and vesicles. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:2629-37. [DOI: 10.1016/j.bbamem.2011.07.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 07/27/2011] [Accepted: 07/28/2011] [Indexed: 10/18/2022]
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Gagoś M, Arczewska M, Gruszecki WI. Raman Spectroscopic Study of Aggregation Process of Antibiotic Amphotericin B Induced by H+, Na+, and K+ Ions. J Phys Chem B 2011; 115:5032-6. [DOI: 10.1021/jp201755s] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mariusz Gagoś
- Department of Biophysics, University of Life Sciences in Lublin, 20-950 Lublin, Poland
| | - Marta Arczewska
- Department of Biophysics, University of Life Sciences in Lublin, 20-950 Lublin, Poland
| | - Wiesław I. Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
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Cohen BE. Amphotericin B membrane action: role for two types of ion channels in eliciting cell survival and lethal effects. J Membr Biol 2010; 238:1-20. [PMID: 21085940 DOI: 10.1007/s00232-010-9313-y] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Accepted: 10/20/2010] [Indexed: 01/25/2023]
Abstract
The formation of aqueous pores by the polyene antibiotic amphotericin B (AmB) is at the basis of its fungicidal and leishmanicidal action. However, other types of nonlethal and dose-dependent biphasic effects that have been associated with the AmB action in different cells, including a variety of survival responses, are difficult to reconcile with the formation of a unique type of ion channel by the antibiotic. In this respect, there is increasing evidence indicating that AmB forms nonaqueous (cation-selective) channels at concentrations below the threshold at which aqueous pores are formed. The main foci of this review will be (1) to provide a summary of the evidence supporting the formation of cation-selective ion channels and aqueous pores by AmB in lipid membrane models and in the membranes of eukaryotic cells; (2) to discuss the influence of membrane parameters such as thickness fluctuations, the type of sterol present and the existence of sterol-rich specialized lipid raft microdomains in the formation process of such channels; and (3) to develop a cell model that serves as a framework for understanding how the intracellular K(+) and Na(+) concentration changes induced by the cation-selective AmB channels enhance multiple survival response pathways before they are overcome by the more sustained ion fluxes, Ca(2+)-dependent apoptotic events and cell lysis effects that are associated with the formation of AmB aqueous pores.
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Affiliation(s)
- B Eleazar Cohen
- Division of External Activities, National Institute of Allergy and Infectious Diseases, 6700B Rockledge Drive, Bethesda, MD 20982, USA.
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Récamier KS, Hernández-Gómez A, González-Damián J, Ortega-Blake I. Effect of Membrane Structure on the Action of Polyenes: I. Nystatin Action in Cholesterol- and Ergosterol-Containing Membranes. J Membr Biol 2010; 237:31-40. [DOI: 10.1007/s00232-010-9304-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Accepted: 08/27/2010] [Indexed: 11/27/2022]
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Effect of Membrane Structure on the Action of Polyenes II: Nystatin Activity along the Phase Diagram of Ergosterol- and Cholesterol-Containing POPC Membranes. J Membr Biol 2010; 237:41-9. [DOI: 10.1007/s00232-010-9301-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Accepted: 08/27/2010] [Indexed: 01/14/2023]
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Elgart A, Farber S, Domb AJ, Polacheck I, Hoffman A. Polysaccharide Pharmacokinetics: Amphotericin B Arabinogalactan Conjugate—A Drug Delivery System or a New Pharmaceutical Entity? Biomacromolecules 2010; 11:1972-7. [DOI: 10.1021/bm100298r] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anna Elgart
- Institute for Drug Research, School of Pharmacy, and Department of Clinical Microbiology and Infectious Diseases, The Hebrew University of Jerusalem—Hadassah Medical Center, P.O. Box 12065, Jerusalem 91120, Israel
| | - Shimon Farber
- Institute for Drug Research, School of Pharmacy, and Department of Clinical Microbiology and Infectious Diseases, The Hebrew University of Jerusalem—Hadassah Medical Center, P.O. Box 12065, Jerusalem 91120, Israel
| | - Abraham J. Domb
- Institute for Drug Research, School of Pharmacy, and Department of Clinical Microbiology and Infectious Diseases, The Hebrew University of Jerusalem—Hadassah Medical Center, P.O. Box 12065, Jerusalem 91120, Israel
| | - Itzhack Polacheck
- Institute for Drug Research, School of Pharmacy, and Department of Clinical Microbiology and Infectious Diseases, The Hebrew University of Jerusalem—Hadassah Medical Center, P.O. Box 12065, Jerusalem 91120, Israel
| | - Amnon Hoffman
- Institute for Drug Research, School of Pharmacy, and Department of Clinical Microbiology and Infectious Diseases, The Hebrew University of Jerusalem—Hadassah Medical Center, P.O. Box 12065, Jerusalem 91120, Israel
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Jain JP, Kumar N. Development of amphotericin B loaded polymersomes based on (PEG)(3)-PLA co-polymers: Factors affecting size and in vitro evaluation. Eur J Pharm Sci 2010; 40:456-65. [PMID: 20580669 DOI: 10.1016/j.ejps.2010.05.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 04/18/2010] [Accepted: 05/09/2010] [Indexed: 12/16/2022]
Abstract
Amphotericin B (AmB) is a broad spectrum antifungal and antileishmenial agent and its clinical use is limited due to substantial dose limiting toxicities such as nephrotoxicity. In this work, amphotericin B is formulated in polymersomes of branched (PEG)(3)-PLA co-polymer. Polymersomes were prepared by solvent injection method and the effects of various formulation and process parameters on size and size distribution were studied. The results showed that viscosity of biphasic solution during formulation has significant influence on the size and size distribution of the polymersomes. Further, drug-loaded polymersomes with size of 199.6+/-14.1nm, PDI of 0.258+/-0.18, zeta potential (zeta) of -18.07+/-4.91mV and loading of 16.26+/-2.50% were obtained. Drug was found to be intercalated in the wall of polymersomes as observed using FITC tagged drug and CLSM study. An in vitro release media containing sodium deoxycholate was developed and a significant amount of drug release was observed up to 24h there after a very slow release was obtained. Free drug was not found in the formulation and different molecular forms of the drug (AmB) were observed by UV-visible spectroscopy and circular dichroism. This was further supported by hemolysis experiments, where negligible hemolysis in the test formulation was observed as compared to 100% hemolysis in a marketed formulation (Fungizone).
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Affiliation(s)
- Jay Prakash Jain
- Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research, S.A.S. Nagar, India
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42
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43
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Matsumori N, Tahara K, Yamamoto H, Morooka A, Doi M, Oishi T, Murata M. Direct interaction between amphotericin B and ergosterol in lipid bilayers as revealed by 2H NMR spectroscopy. J Am Chem Soc 2009; 131:11855-60. [PMID: 19645473 DOI: 10.1021/ja9033473] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Although amphotericin B (AmB) is thought to exert its antifungal activity by forming transmembrane ion-permeable self-assemblies together with ergosterol, no previous study has directly proven AmB-ergosterol interaction. To establish the interaction, we measured (2)H NMR using deuterium-labeled sterols and AmB. The (2)H NMR spectra of deuterated ergosterol in palmitoyloleoylphosphatidylcholine (POPC) bilayers showed that fast axial diffusion of erogosterol was almost completely inhibited by the coexistence of AmB. Conversely, cholesterol mobility in POPC membrane was essentially unchanged with or without AmB. These results unequivocally demonstrate that ergosterol has significant interaction with AmB in POPC bilayers. In addition, we examined the mobility of AmB using deuterium-labeled AmB, and found that, although AmB is almost immobilized in sterol-free and cholesterol-containing POPC membranes, a certain ratio of AmB molecules acquires mobility in the presence of ergosterol. The similar mobility of AmB and ergosterol in POPC bilayers confirmed the idea of the direct intermolecular interaction between ergosterol and AmB.
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Affiliation(s)
- Nobuaki Matsumori
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
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Abstract
Invasive fungal infections are major causes of morbidity and mortality in critically ill patients. Foremost among these is invasive candidiasis. In recent years, invasive aspergillosis (IA) and zygomycosis have emerged as major problems in susceptible, critically ill patients. Risk factors for invasive fungal infections, including disrupted anatomic barriers, suppressed antifungal host responses, and exposure to potentially opportunistic fungi are common in critically ill patients. The expanded antifungal armamentarium and advent of rapid diagnostic techniques are altering the approach to invasive fungal infections in the intensive care unit (ICU). Herein, we review recent developments in the field of antifungal host defenses, the changing epidemiology of fungal infections in the ICU, the pharmacology of antifungal agents of importance to critically ill patients, and the evolving approaches to therapy in this setting.
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Affiliation(s)
- Shmuel Shoham
- Section of Infectious Diseases, Washington Hospital Center, Washington, D.C., MedStar Research Institute, Washington, DC 20010, USA.
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45
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Organization of polyene antibiotic amphotericin B at the argon–water interface. Biophys Chem 2008; 137:110-5. [DOI: 10.1016/j.bpc.2008.08.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2008] [Revised: 08/01/2008] [Accepted: 08/02/2008] [Indexed: 11/22/2022]
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Torrado JJ, Espada R, Ballesteros MP, Torrado-Santiago S. Amphotericin B Formulations and Drug Targeting. J Pharm Sci 2008; 97:2405-25. [PMID: 17893903 DOI: 10.1002/jps.21179] [Citation(s) in RCA: 211] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Amphotericin B is a low-soluble polyene antibiotic which is able to self-aggregate. The aggregation state can modify its activity and pharmacokinetical characteristics. In spite of its high toxicity it is still widely employed for the treatment of systemic fungal infections and parasitic disease and different formulations are marketed. Some of these formulations, such as liposomal formulations, can be considered as classical examples of drug targeting. The pharmacokinetics, toxicity and activity are clearly dependent on the type of amphotericin B formulation. New drug delivery systems such as liposomes, nanospheres and microspheres can result in higher concentrations of AMB in the liver and spleen, but lower concentrations in kidney and lungs, so decreasing its toxicity. Moreover, the administration of these drug delivery systems can enhance the drug accessibility to organs and tissues (e.g., bone marrow) otherwise inaccessible to the free drug. During the last few years, new AMB formulations (AmBisome, Abelcet, and Amphotec) with an improved efficacy/toxicity ratio have been marketed. This review compares the different formulations of amphotericin B in terms of pharmacokinetics, toxicity and activity and discusses the possible drug targeting effect of some of these new formulations.
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Affiliation(s)
- J J Torrado
- Dpto Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Complutense University of Madrid, Plaza Ramón y Cajal, 28040 Madrid, Spain.
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Hac-Wydro K, Kapusta J, Jagoda A, Wydro P, Dynarowicz-Łatka P. The influence of phospholipid structure on the interactions with nystatin, a polyene antifungal antibiotic. Chem Phys Lipids 2007; 150:125-35. [PMID: 17681287 DOI: 10.1016/j.chemphyslip.2007.06.222] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2006] [Revised: 06/11/2007] [Accepted: 06/28/2007] [Indexed: 10/23/2022]
Abstract
This work presents the investigations of the interactions between nystatin, a polyene antibiotic, and phospholipids with various head groups (phosphatidylcholine and phosphatidylethanolamine) and acyl chains of different length and saturation degree. The experiments were performed with the Langmuir monolayer technique. Among phosphatidylethanolamines, DMPE, DPPE and DSPE were studied, while phosphatidylcholines were represented by DSPC and DOPC. The influence of the antibiotic on the molecular organization of the phospholipid monolayer was analysed with the compression modulus values, while the strength of nystatin/phospholipid interactions and the stability of the mixed monolayers were examined on the basis of the excess free energy of mixing values. The results obtained proved a high affinity of nystatin towards phospholipids. Nystatin was found to interact more strongly with phosphatidylcholines than with phosphatidylethanolamines. The most negative values of the excess free energy of mixing observed for the antibiotic and DOPC mixtures prove that nystatin favors the phospholipid with two unsaturated acyl chains. The results imply that nystatin/phospholipid interactions compete in the natural membrane with nystatin/sterol interactions, thereby affecting the antifungal activity of nystatin and its toxicity towards mammalian cells.
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Affiliation(s)
- Katarzyna Hac-Wydro
- Department of General Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
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48
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Hereć M, Islamov A, Kuklin A, Gagoś M, Gruszecki WI. Effect of antibiotic amphotericin B on structural and dynamic properties of lipid membranes formed with egg yolk phosphatidylcholine. Chem Phys Lipids 2007; 147:78-86. [PMID: 17481599 DOI: 10.1016/j.chemphyslip.2007.03.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Revised: 03/21/2007] [Accepted: 03/24/2007] [Indexed: 11/30/2022]
Abstract
Amphotericin B (AmB) is a popular antibiotic applied in treatment of deep-seated mycotic infections. The mode of action of AmB is based upon interactions with biomembranes but exact binding properties of the antibiotic to the lipid membranes still remain obscure. Effect of incorporation of AmB into egg yolk phosphatidylcholine membranes in the concentration range from 0.01 to 5 mol% on structural and dynamic properties of lipid bilayers was studied with application of small-angle neutron scattering, X-ray diffractometry and Fourier-transform infrared spectroscopy (FTIR). The results of the experiments show that AmB is located predominantly in the headgroup region of the membranes at concentrations below 1 mol%. The process of AmB aggregation, at concentrations above 1 mol%, is associated with ordering effect within the acyl chain region and therefore indicates incorporation of AmB into the hydrophobic membrane core.
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Affiliation(s)
- Monika Hereć
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
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49
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Baginski M, Czub J, Sternal K. Interaction of amphotericin B and its selected derivatives with membranes: molecular modeling studies. CHEM REC 2007; 6:320-32. [PMID: 17304519 DOI: 10.1002/tcr.20096] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Amphotericin B (AmB) is a well-known antifungal antibiotic that has been used in the clinic for about five decades. Despite its chemotherapeutic importance, AmB is quite toxic and many efforts have been made to improve its pharmacological properties, e.g., by chemical modifications. The lipid membrane is a molecular target for AmB, however, due to heterogeneity of its components, the molecular mechanism of AmB action is still unclear. The lack of this knowledge hinders rational designing of new and less toxic AmB derivatives. Our review is a critical presentation of the current understanding of AmB molecular mechanism of action at the membrane level. Except the experimental approach, the extensive overview of molecular modeling studies, performed mostly in our lab, is presented. The results of interactions between AmB or some of its derivatives and lipid model membranes are discussed. In our studies, different biomembrane models and different associate states of the antibiotic were included. Presented molecular modeling approach is especially valuable with regard to a new paradigm of the structure of lipid membrane containing liquid-ordered domains. Hopefully, all these complementary experimental/computational approaches are going to reach the point at which a new hypothesis about molecular mechanism of AmB activity and selectivity will be put forward.
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Affiliation(s)
- Maciej Baginski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Narutowicza St 11/12, 80-952 Gdansk, Poland.
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Meletiadis J, te Dorsthorst DTA, Verweij PE. The concentration-dependent nature of in vitro amphotericin B–itraconazole interaction against Aspergillus fumigatus: isobolographic and response surface analysis of complex pharmacodynamic interactions. Int J Antimicrob Agents 2006; 28:439-49. [PMID: 17055706 DOI: 10.1016/j.ijantimicag.2006.07.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2006] [Revised: 05/07/2006] [Accepted: 05/11/2006] [Indexed: 11/29/2022]
Abstract
The interaction between polyenes and azoles is not well understood. We therefore explored the in vitro combination of amphotericin B with itraconazole against 14 clinical Aspergillus fumigatus isolates (9 itraconazole susceptible and 5 itraconazole resistant) with a colorimetric broth microdilution checkerboard technique using two drug interaction models able to explore complicated patterns of interactions: the response surface analysis of Bliss independence and the isobolographic analysis of Loewe additivity zero interaction theories. Synergy was found at combinations with low concentrations of amphotericin B (<0.125 mg/L), whereas antagonism was found at combinations with higher concentrations of amphotericin B. For itraconazole-resistant isolates, synergistic interactions were observed at high concentrations of itraconazole (>0.5 mg/L). Synergy was more frequently observed for the itraconazole-resistant isolates than for the itraconazole-susceptible isolates.
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Affiliation(s)
- Joseph Meletiadis
- National Cancer Institute, Pediatric Oncology Branch, Bethesda, MD 20892, USA.
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