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Forte J, Gioia Fabiano M, Grazia Ammendolia M, Puglisi R, Rinaldi F, Ricci C, Del Favero E, Carafa M, Mattia G, Marianecci C. Bioactive pH-sensitive nanoemulsion in melanoma cell lines. Int J Pharm 2024; 661:124380. [PMID: 38950661 DOI: 10.1016/j.ijpharm.2024.124380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/21/2024] [Accepted: 06/22/2024] [Indexed: 07/03/2024]
Abstract
Melanoma is an aggressive form of skin cancer with elevated propensity to metastasize. One of the major critical issues in the treatment of oncological patients is represented by the development of toxicity and resistance to the available therapies. Great progress has been made in the field of nanotechnologies to limit the unwanted effects of anti-cancer treatments. We explored the potential of creating oil-in-water nanoemulsions composed of oleic acid, as a bioactive carrier for lipophilic drug delivery. This bioactive nanoemulsion was loaded with Curcumin, a natural fluorescent lipophilic compound, used as a model drug to evaluate nanoemulsion capability to: i) encapsulate the lipophilic moiety; ii) interact with the specific cells, and iii) improve the efficacy of the loaded model drug compared to the free one. Therefore, we evaluated the physical-chemical features of Curcumin-loaded nanoemulsions, confirming their pH sensibility and their stability over time. Moreover, the nanoemulsions were able to preserve the loaded Curcumin by degradation/destabilization phenomena. Finally, we verified some of the biological functions of Curcumin delivered by nanoemulsions in the B16F10 melanoma cell line. We obtained evidence of the biological action of Curcumin, suggesting oleic-based nanoemulsions as an efficient nanocarrier for lipophilic drug delivery.
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Affiliation(s)
- Jacopo Forte
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Rome 00161, Italy.
| | - Maria Gioia Fabiano
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Rome 00161, Italy.
| | - Maria Grazia Ammendolia
- National Center for Innovative Technologies in Public Health, Istituto Superiore di Sanità, Rome 00161, Italy.
| | - Rossella Puglisi
- Center for Gender-specific Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy.
| | - Federica Rinaldi
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Rome 00161, Italy.
| | - Caterina Ricci
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università di Milano, Milan, Italy.
| | - Elena Del Favero
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università di Milano, Milan, Italy.
| | - Maria Carafa
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Rome 00161, Italy.
| | - Gianfranco Mattia
- Center for Gender-specific Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy.
| | - Carlotta Marianecci
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Rome 00161, Italy.
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2
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Forte J, Maurizi L, Fabiano MG, Conte AL, Conte MP, Ammendolia MG, D'Intino E, Catizone A, Gesualdi L, Rinaldi F, Carafa M, Marianecci C, Longhi C. Gentamicin loaded niosomes against intracellular uropathogenic Escherichia coli strains. Sci Rep 2024; 14:10196. [PMID: 38702355 PMCID: PMC11068731 DOI: 10.1038/s41598-024-59144-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 04/08/2024] [Indexed: 05/06/2024] Open
Abstract
Urinary tract infections (UTIs) are the most common bacterial infections and uropathogenic Escherichia coli (UPEC) is the main etiological agent of UTIs. UPEC can persist in bladder cells protected by immunological defenses and antibiotics and intracellular behavior leads to difficulty in eradicating the infection. The aim of this paper is to design, prepare and characterize surfactant-based nanocarriers (niosomes) able to entrap antimicrobial drug and potentially to delivery and release antibiotics into UPEC-infected cells. In order to validate the proposed drug delivery system, gentamicin, was chosen as "active model drug" due to its poor cellular penetration. The niosomes physical-chemical characterization was performed combining different techniques: Dynamic Light Scattering Fluorescence Spectroscopy, Transmission Electron Microscopy. Empty and loaded niosomes were characterized in terms of size, ζ-potential, bilayer features and stability. Moreover, Gentamicin entrapped amount was evaluated, and the release study was also carried out. In addition, the effect of empty and loaded niosomes was studied on the invasion ability of UPEC strains in T24 bladder cell monolayers by Gentamicin Protection Assay and Confocal Microscopy. The observed decrease in UPEC invasion rate leads us to hypothesize a release of antibiotic from niosomes inside the cells. The optimization of the proposed drug delivery system could represent a promising strategy to significatively enhance the internalization of antimicrobial drugs.
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Affiliation(s)
- Jacopo Forte
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Linda Maurizi
- Dipartimento di Sanità Pubblica e Malattie Infettive, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Maria Gioia Fabiano
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Antonietta Lucia Conte
- Dipartimento di Sanità Pubblica e Malattie Infettive, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Maria Pia Conte
- Dipartimento di Sanità Pubblica e Malattie Infettive, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Maria Grazia Ammendolia
- Centro Nazionale Tecnologie Innovative in Sanità Pubblica, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161, Rome, Italy.
| | - Eleonora D'Intino
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Angela Catizone
- Dipartimento Scienze Anatomiche, Istologiche, Medico Legali e Dell'Apparato Locomotore, Sapienza Università di Roma, Via Scarpa, 16, 00161, Rome, Italy
| | - Luisa Gesualdi
- Dipartimento Scienze Anatomiche, Istologiche, Medico Legali e Dell'Apparato Locomotore, Sapienza Università di Roma, Via Scarpa, 16, 00161, Rome, Italy
| | - Federica Rinaldi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy.
| | - Maria Carafa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Carlotta Marianecci
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Catia Longhi
- Dipartimento di Sanità Pubblica e Malattie Infettive, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
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3
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Pacheco ARF, Barros AM, Amorim CO, Amaral VS, Coutinho PJG, Rodrigues ARO, Castanheira EMS. Elastic Liposomes Containing Calcium/Magnesium Ferrite Nanoparticles Coupled with Gold Nanorods for Application in Photothermal Therapy. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:679. [PMID: 38668173 PMCID: PMC11055082 DOI: 10.3390/nano14080679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/29/2024]
Abstract
This work reports on the design, development, and characterization of novel magneto-plasmonic elastic liposomes (MPELs) of DPPC:SP80 (85:15) containing Mg0.75Ca0.25Fe2O4 nanoparticles coupled with gold nanorods, for topical application of photothermal therapy (PTT). Both magnetic and plasmonic components were characterized regarding their structural, morphological, magnetic and photothermal properties. The magnetic nanoparticles display a cubic shape and a size (major axis) of 37 ± 3 nm, while the longitudinal and transverse sizes of the nanorods are 46 ± 7 nm and 12 ± 1.6 nm, respectively. A new methodology was employed to couple the magnetic and plasmonic nanostructures, using cysteine as bridge. The potential for photothermia was evaluated for the magnetic nanoparticles, gold nanorods and the coupled magnetic/plasmonic nanoparticles, which demonstrated a maximum temperature variation of 28.9 °C, 33.6 °C and 37.2 °C, respectively, during a 30 min NIR-laser irradiation of 1 mg/mL dispersions. Using fluorescence anisotropy studies, a phase transition temperature (Tm) of 35 °C was estimated for MPELs, which ensures an enhanced fluidity crucial for effective crossing of the skin layers. The photothermal potential of this novel nanostructure corresponds to a specific absorption rate (SAR) of 616.9 W/g and a maximum temperature increase of 33.5 °C. These findings point to the development of thermoelastic nanocarriers with suitable features to act as photothermal hyperthermia agents.
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Affiliation(s)
- Ana Rita F. Pacheco
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.R.F.P.); (A.M.B.)
- Associate Laboratory LaPMET, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Ana Margarida Barros
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.R.F.P.); (A.M.B.)
- Associate Laboratory LaPMET, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Carlos O. Amorim
- Physics Department and i3N, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Vítor S. Amaral
- Physics Department and CICECO, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Paulo J. G. Coutinho
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.R.F.P.); (A.M.B.)
- Associate Laboratory LaPMET, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Ana Rita O. Rodrigues
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.R.F.P.); (A.M.B.)
- Associate Laboratory LaPMET, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Elisabete M. S. Castanheira
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.R.F.P.); (A.M.B.)
- Associate Laboratory LaPMET, Campus de Gualtar, 4710-057 Braga, Portugal
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Sahu AK, Reddy UC, Kannoth Manheri M, Mishra AK. Exploring the Physical Properties of Lipid Membranes with Polyhydroxy Oxanorbornane Head Group Using NBD-Conjugated and DPH Fluorescent Probes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5106-5120. [PMID: 38427698 DOI: 10.1021/acs.langmuir.3c02941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
The present study focuses on exploring the physical properties of lipid membranes based on the polyhydroxy oxanorbornane (PH-ONB) headgroup, designed as synthetic analogues of naturally occurring archaeal lipid membranes. Specifically, we study two variants of PH-ONB headgroup-based lipids differing in the number of hydroxy groups present in the headgroup, with one having two hydroxy groups (ONB-2OH) and the other having three (ONB-3OH). These lipids form stable bilayer membranes. The study begins with a comprehensive analysis of the fluorescence characteristics of nitrobenzoxadiazole (NBD)-tagged ONB-based lipids in different solvent environments and within a model lipid membrane 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC). Subsequently, the physical properties of the ONB-based membranes were examined by using an NBD-tagged ONB-based probe and a commonly used extrinsic 1,6-diphenyl-1,3,5-hexatriene (DPH) fluorescent probe. The steady-state and time-resolved fluorescence properties of the NBD-tagged ONB-based probe and DPH were used to compare the physical properties of the ONB-based membranes, including polarity, fluidity, phase transition, order, hydration, location, heterogeneity, and rotational diffusion. The solid gel to liquid crystalline phase transition temperatures of ONB-2OH and ONB-3OH lipid membranes are found to be (68 ± 1) °C and (74 ± 1) °C, respectively. The variation in organization (size), fluidity, and phase transition temperature of ONB-based lipid membranes is explained by the extent of hydrogen bonding interactions between lipid head groups. ONB-based membranes exhibit characteristics similar to those of phospholipid membranes and possess a notably high phase transition temperature. These properties make them a promising and cost-effective synthetic alternative to archaeal lipid membranes with a wide range of potential applications.
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Affiliation(s)
- Anand Kumar Sahu
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - U Chandrasekhar Reddy
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | | | - Ashok Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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5
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Mondal D, Bagchi A, Biswas S, Dagar T, Biswas A, Bagchi A, De S. Vesicle-Encapsulated Rolipram (PDE4 Inhibitor) and Its Anticancer Activity. ACS APPLIED BIO MATERIALS 2024; 7:369-378. [PMID: 38150107 DOI: 10.1021/acsabm.3c00961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Vesicular carriers of drugs are popular for specific targeting and delivery. The most popular vesicles among these are liposomes. However, they suffer from some inherent limitations. In this work, alternative vesicles with enhanced stability, i.e., niosomes and bilosomes have been prepared, characterized, and their delivery efficiency studied. Bilosomes have the additional advantage of being able to withstand the harsh environment of the gastrointestinal tract (GIT). The taurine-derived bile salt (NaTC) was incorporated into the bilosome bilayer. The inspiration behind NaTC insertion is the recent reports on antiaging action and immune function of taurine. Fluorescence probing was used to study the vesicle environment. The entrapment and subsequent release of the important cAMP-specific PDE4 inhibitor/drug Rolipram, which has antibreast cancer properties, was assessed on the breast cancer cell line MCF-7. Rolipram has important therapeutic applications, one of the most significant in recent times being the treatment of Covid-19-triggered pneumonia and cytokine storms. As for cancer chemotherapy, the localization of drug, targeted delivery, and sustained release are extremely important issues, and it seemed worthwhile to explore the potential of the bilosomes and niosomes to entrap and release Rolipram. The important finding is that niosomes perform much better than bilosomes in the hormone-responsive breast cancer mileau MCF-7. Moreover, there was a 4-fold decrease in the IC50 of Rolipram encapsulated in niosomes compared to Rolipram alone. On the other hand, bilosome-encapsulated Rolipram shows higher IC50 value. The results can be further understood by molecular docking studies.
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Affiliation(s)
- Durga Mondal
- Department of Chemistry, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Arka Bagchi
- Department of Zoology, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Sima Biswas
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Tanmay Dagar
- Department of Chemistry, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Arunima Biswas
- Department of Zoology, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Angshuman Bagchi
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Swati De
- Department of Chemistry, University of Kalyani, Kalyani, West Bengal 741235, India
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6
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Dymek M, Olechowska K, Hąc-Wydro K, Sikora E. Liposomes as Carriers of GHK-Cu Tripeptide for Cosmetic Application. Pharmaceutics 2023; 15:2485. [PMID: 37896245 PMCID: PMC10610410 DOI: 10.3390/pharmaceutics15102485] [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: 09/13/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Liposomes are self-assembled spherical systems composed of amphiphilic phospholipids. They can be used as carriers of both hydrophobic and hydrophilic substances, such as the anti-aging and wound-healing copper-binding peptide, GHK-Cu (glycyl-L-histidyl-L-lysine). Anionic (AL) and cationic (CL) hydrogenated lecithin-based liposomes were obtained as GHK-Cu skin delivery systems using the thin-film hydration method combined with freeze-thaw cycles and the extrusion process. The influence of total lipid content, lipid composition and GHK-Cu concentration on the physicochemical properties of liposomes was studied. The lipid bilayer fluidity and the peptide encapsulation efficiency (EE) were also determined. Moreover, in vitro assays of tyrosinase and elastase inhibition were performed. Stable GHK-Cu-loaded liposome systems of small sizes (approx. 100 nm) were obtained. The bilayer fluidity was higher in the case of cationic liposomes. As the best carriers, 25 mg/cm3 CL and AL hydrated with 0.5 mg/cm3 GHK-Cu were selected with EE of 31.7 ± 0.9% and 20.0 ± 2.8%, respectively. The obtained results confirmed that the liposomes can be used as carriers for biomimetic peptides such as copper-binding peptide and that the GHK-Cu did not significantly affect the tyrosinase activity but led to 48.90 ± 2.50% elastase inhibition, thus reducing the rate of elastin degeneration and supporting the structural integrity of the skin.
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Affiliation(s)
- Michał Dymek
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland;
| | - Karolina Olechowska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (K.O.); (K.H.-W.)
| | - Katarzyna Hąc-Wydro
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (K.O.); (K.H.-W.)
| | - Elżbieta Sikora
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland;
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Pereira M, Rodrigues ARO, Amaral L, Côrte-Real M, Santos-Pereira C, Castanheira EMS. Bovine Lactoferrin-Loaded Plasmonic Magnetoliposomes for Antifungal Therapeutic Applications. Pharmaceutics 2023; 15:2162. [PMID: 37631376 PMCID: PMC10458800 DOI: 10.3390/pharmaceutics15082162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Bovine lactoferrin (bLf) is a milk-derived protein that exhibits potent broad-spectrum antifungal activity against multiple fungi. bLf is susceptible to degradation, while some of its properties depend on the tertiary structure. So, the encapsulation of bLf in stimuli-responsive therapeutic formulations provides an added value to enhance its biological activities. Plasmonic magnetoliposomes (PMLs) arise as promising nanocarriers for dual hyperthermia (magneto-photothermia) and local chemotherapy, since the combination of magnetic and gold nanoparticles (NPs) in a single nanosystem (multifunctional liposomes) enables the targeting and controlled release of loaded drugs. In this work, plasmonic magnetoliposomes (PMLs) containing manganese ferrite nanoparticles (28 nm size) and gold nanoparticles (5-7.5 nm size), functionalized with 11-mercaptoundecanoic acid or octadecanethiol, were prepared and loaded with bLf. The NPs' optical, magnetic and structural properties were measured via UV/vis/NIR absorption spectroscopy, SQUID and TEM, respectively. The Specific Absorption Rate (SAR) was calculated to assess the capabilities for magnetic and photothermal hyperthermia. Finally, the antifungal potential of bLf-loaded PMLs and their mechanism of internalization were assessed in Saccharomyces cerevisiae by counting the colony forming units and using fluorescence microscopy. The results demonstrate that PMLs are mainly internalized through an energy- and temperature-dependent endocytic process, though the contribution of a diffusion component cannot be discarded. Most notably, only bLf-loaded plasmonic magnetoliposomes display cytotoxicity with an efficiency similar to free bLf, attesting their promising potential for bLf delivery in the context of antifungal therapeutic interventions.
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Affiliation(s)
- Mélanie Pereira
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- LaPMET (Laboratory of Physics for Materials and Emergent Technologies), Associate Laboratory, 4710-057 Braga, Portugal
| | - Ana Rita O. Rodrigues
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- LaPMET (Laboratory of Physics for Materials and Emergent Technologies), Associate Laboratory, 4710-057 Braga, Portugal
| | - Leslie Amaral
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710-057 Braga, Portugal
| | - Manuela Côrte-Real
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710-057 Braga, Portugal
| | - Cátia Santos-Pereira
- CEB—Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Elisabete M. S. Castanheira
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- LaPMET (Laboratory of Physics for Materials and Emergent Technologies), Associate Laboratory, 4710-057 Braga, Portugal
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8
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Li MH, Zhang X, London E, Raleigh DP. Impact of Ca 2+ on membrane catalyzed IAPP amyloid formation and IAPP induced vesicle leakage. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2023; 1865:184161. [PMID: 37121365 PMCID: PMC10735052 DOI: 10.1016/j.bbamem.2023.184161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 04/10/2023] [Accepted: 04/24/2023] [Indexed: 05/02/2023]
Abstract
Human islet amyloid polypeptide (hIAPP, also known as amylin) is a 37 amino acid pancreatic polypeptide hormone that plays a role in regulating glucose levels, but forms pancreatic amyloid in type-2 diabetes. The process of amyloid formation by hIAPP contributes to β-cell death in the disease. Multiple mechanisms of hIAPP induced toxicity of β-cells have been proposed including disruption of cellular membranes. However, the nature of hIAPP membrane interactions and the effect of ions and other molecules on hIAPP membrane interactions are not fully understood. Many studies have used model membranes with a high content of anionic lipids, often POPS, however the concentration of anionic lipids in the β-cell plasma membrane is low. Here we study the concentration dependent effect of Ca2+ (0 to 50 mM) on hIAPP membrane interactions using large unilamellar vesicles (LUVs) with anionic lipid content ranging from 0 to 50 mol%. We find that Ca2+ does not effectively inhibit hIAPP amyloid formation and hIAPP induced membrane leakage from binary LUVs with a low percentage of POPS, but has a greater effect on LUVs with a high percentage of POPS. Mg2+ had very similar effects, and the effects of Ca2+ and Mg2+ can be largely rationalized by the neutralization of POPS charge. The implications for hIAPP-membrane interactions are discussed.
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Affiliation(s)
- Ming-Hao Li
- Graduate Program in Biochemistry and Structural Biology, Stony Brook University, Stony Brook, NY 11794, United States
| | - Xiaoxue Zhang
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States
| | - Erwin London
- Graduate Program in Biochemistry and Structural Biology, Stony Brook University, Stony Brook, NY 11794, United States; Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States; Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794, United States.
| | - Daniel P Raleigh
- Graduate Program in Biochemistry and Structural Biology, Stony Brook University, Stony Brook, NY 11794, United States; Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States; Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, NY 11794, United States.
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9
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Eigenfeld M, Wittmann L, Kerpes R, Schwaminger S, Becker T. Quantification methods of determining brewer's and pharmaceutical yeast cell viability: accuracy and impact of nanoparticles. Anal Bioanal Chem 2023; 415:3201-3213. [PMID: 37083758 PMCID: PMC10287788 DOI: 10.1007/s00216-023-04676-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 04/22/2023]
Abstract
For industrial processes, a fast, precise, and reliable method of determining the physiological state of yeast cells, especially viability, is essential. However, an increasing number of processes use magnetic nanoparticles (MNPs) for yeast cell manipulation, but their impact on yeast cell viability and the assay itself is unclear. This study tested the viability of Saccharomyces pastorianus ssp. carlsbergensis and Pichia pastoris by comparing traditional colourimetric, high-throughput, and growth assays with membrane fluidity. Results showed that methylene blue staining is only reliable for S. pastorianus cells with good viability, being erroneous in low viability (R2 = 0.945; [Formula: see text] = 5.78%). In comparison, the fluorescence microscopy-based assay of S. pastorianus demonstrated a coefficient of determination of R2 = 0.991 at [Formula: see text] ([Formula: see text] = 2.50%) and flow cytometric viability determination using carboxyfluorescein diacetate (CFDA), enabling high-throughput analysis of representative cell numbers; R2 = 0.972 ([Formula: see text]; [Formula: see text] = 3.89%). Membrane fluidity resulted in a non-linear relationship with the viability of the yeast cells ([Formula: see text]). We also determined similar results using P. pastoris yeast. In addition, we demonstrated that MNPs affected methylene blue staining by overestimating viability. The random forest model has been shown to be a precise method for classifying nanoparticles and yeast cells and viability differentiation in flow cytometry by using CFDA. Moreover, CFDA and membrane fluidity revealed precise results for both yeasts, also in the presence of nanoparticles, enabling fast and reliable determination of viability in many experiments using MNPs for yeast cell manipulation or separation.
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Affiliation(s)
- Marco Eigenfeld
- Chair of Brewing and Beverage Technology, Technical University of Munich, TUM School of Life Science, Weihenstephaner Steig 20, 85354 Freising, Germany
| | - Leonie Wittmann
- Chair of Bioseparation Engineering, Technical University of Munich, TUM School of Engineering and Design, Boltzmannstr. 15, 85748 Garching, Germany
| | - Roland Kerpes
- Chair of Brewing and Beverage Technology, Technical University of Munich, TUM School of Life Science, Weihenstephaner Steig 20, 85354 Freising, Germany
| | - Sebastian Schwaminger
- Chair of Bioseparation Engineering, Technical University of Munich, TUM School of Engineering and Design, Boltzmannstr. 15, 85748 Garching, Germany
- Division of Medicinal Chemistry, Medical University of Graz, Otto-Loewi Research Center, Neue Stiftingtalstr. 6, 8010 Graz, Austria
- BioTechMed-Graz, Graz, Austria
| | - Thomas Becker
- Chair of Brewing and Beverage Technology, Technical University of Munich, TUM School of Life Science, Weihenstephaner Steig 20, 85354 Freising, Germany
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Starosta R, Santos TC, Dinis de Sousa AF, Santos MS, Corvo ML, Tomaz AI, de Almeida RFM. Assessing the role of membrane lipids in the action of ruthenium(III) anticancer compounds. Front Mol Biosci 2023; 9:1059116. [PMID: 36660430 PMCID: PMC9845782 DOI: 10.3389/fmolb.2022.1059116] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
This work addresses the possible role of the cell membrane in the molecular mechanism of action of two salan-type ruthenium complexes that were previously shown to be active against human tumor cells, namely [Ru(III)(L1)(PPh3)Cl] and [Ru(III)(L2)(PPh3)Cl] (where L1 is 6,6'-(1R,2R)-cyclohexane-1,2-diylbis(azanediyl)bis(methylene)bis(3-methoxyphenol); and L2 is 2,2'-(1R,2R)-cyclohexane-1,2-diylbis(azanediyl)bis(methylene)bis(4-methoxyphenol)). One-component membrane models were first used, a disordered fluid bilayer of dioleoylphosphatodylcholine (DOPC), and an ordered rigid gel bilayer of dipalmitoylphosphatidylcholine. In addition, two quaternary mixtures of phosphatidylcholine, phosphatidylethanolamine, sphingomyelin and cholesterol were used to mimic the lipid composition either of mammalian plasma membrane (1:1:1:1 mol ratio) or of a cancer cell line membrane (36.2:23.6:6.8:33.4 mol ratio). The results show that both salan ligands L1 and L2 bind relatively strongly to DOPC bilayers, but without significantly affecting their structure. The ruthenium complexes have moderate affinity for DOPC. However, their impact on the membranes was notable, leading to a significant increase in the permeability of the lipid vesicles. None of the compounds compromised liposome integrity, as revealed by dynamic light scattering. Fluorescence spectroscopy studies revealed changes in the biophysical properties of all membrane models analyzed in the presence of the two complexes, which promoted an increased fluidity and water penetration into the lipid bilayer in the one-component systems. In the quaternary mixtures, one of the complexes had an analogous effect (increasing water penetration), whereas the other complex reorganized the liquid ordered and liquid disordered domains. Thus, small structural differences in the metal ligands may lead to different outcomes. To better understand the effect of these complexes in cancer cells, the membrane dipole potential was also measured. For both Ru complexes, an increase in the dipole potential was observed for the cancer cell membrane model, while no alteration was detected on the non-cancer plasma membrane model. Our results show that the action of the Ru(III) complexes tested involves changes in the biophysical properties of the plasma membrane, and that it also depends on membrane lipid composition, which is frequently altered in cancer cells when compared to their normal counterparts.
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Affiliation(s)
- Radoslaw Starosta
- Faculty of Chemistry, University of Wroclaw, Wroclaw, Poland,Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Telma C. Santos
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Andreia F. Dinis de Sousa
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Maria Soledade Santos
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - M. Luisa Corvo
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Isabel Tomaz
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal,*Correspondence: Rodrigo F. M. de Almeida, ; Ana Isabel Tomaz,
| | - Rodrigo F. M. de Almeida
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal,*Correspondence: Rodrigo F. M. de Almeida, ; Ana Isabel Tomaz,
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11
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Schenkel M, Ravamehr-Lake D, Czerniak T, Saenz JP, Krainer G, Schlierf M, Deber CM. Impact of cholesterol and Lumacaftor on the folding of CFTR helical hairpins. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2023; 1865:184078. [PMID: 36279907 DOI: 10.1016/j.bbamem.2022.184078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 10/17/2022] [Accepted: 10/18/2022] [Indexed: 11/07/2022]
Abstract
Cystic fibrosis (CF) is caused by mutations in the gene that codes for the chloride channel cystic fibrosis transmembrane conductance regulator (CFTR). Recent advances in CF treatment have included use of small-molecule drugs known as modulators, such as Lumacaftor (VX-809), but their detailed mechanism of action and interplay with the surrounding lipid membranes, including cholesterol, remain largely unknown. To examine these phenomena and guide future modulator development, we prepared a set of wild type (WT) and mutant helical hairpin constructs consisting of CFTR transmembrane (TM) segments 3 and 4 and the intervening extracellular loop (termed TM3/4 hairpins) that represent minimal membrane protein tertiary folding units. These hairpin variants, including CF-phenotypic loop mutants E217G and Q220R, and membrane-buried mutant V232D, were reconstituted into large unilamellar phosphatidylcholine (POPC) vesicles, and into corresponding vesicles containing 70 mol% POPC +30 mol% cholesterol, and studied by single-molecule FRET and circular dichroism experiments. We found that the presence of 30 mol% cholesterol induced an increase in helicity of all TM3/4 hairpins, suggesting an increase in bilayer cross-section and hence an increase in the depth of membrane insertion compared to pure POPC vesicles. Importantly, when we added the corrector VX-809, regardless of the presence or absence of cholesterol, all mutants displayed folding and helicity largely indistinguishable from the WT hairpin. Fluorescence spectroscopy measurements suggest that the corrector alters lipid packing and water accessibility. We propose a model whereby VX-809 shields the protein from the lipid environment in a mutant-independent manner such that the WT scaffold prevails. Such 'normalization' to WT conformation is consistent with the action of VX-809 as a protein-folding chaperone.
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Affiliation(s)
- Mathias Schenkel
- B CUBE - Center for Molecular Bioengineering, TU Dresden, Tatzberg 41, 01307 Dresden, Germany
| | - Dorna Ravamehr-Lake
- Division of Molecular Medicine, Research Institute, Hospital for Sick Children, 686 Bay Street, Toronto, ON M5G 0A4, Canada; Department of Biochemistry, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Tomasz Czerniak
- B CUBE - Center for Molecular Bioengineering, TU Dresden, Tatzberg 41, 01307 Dresden, Germany
| | - James P Saenz
- B CUBE - Center for Molecular Bioengineering, TU Dresden, Tatzberg 41, 01307 Dresden, Germany
| | - Georg Krainer
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
| | - Michael Schlierf
- B CUBE - Center for Molecular Bioengineering, TU Dresden, Tatzberg 41, 01307 Dresden, Germany.
| | - Charles M Deber
- Division of Molecular Medicine, Research Institute, Hospital for Sick Children, 686 Bay Street, Toronto, ON M5G 0A4, Canada; Department of Biochemistry, University of Toronto, Toronto, ON M5S 1A8, Canada.
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12
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Effect of Ciprofloxacin-Loaded Niosomes on Escherichia coli and Staphylococcus aureus Biofilm Formation. Pharmaceutics 2022; 14:pharmaceutics14122662. [PMID: 36559155 PMCID: PMC9788229 DOI: 10.3390/pharmaceutics14122662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/25/2022] [Accepted: 11/27/2022] [Indexed: 12/02/2022] Open
Abstract
Infections caused by bacterial biofilms represent a global health problem, causing considerable patient morbidity and mortality in addition to an economic burden. Escherichia coli, Staphylococcus aureus, and other medically relevant bacterial strains colonize clinical surfaces and medical devices via biofilm in which bacterial cells are protected from the action of the immune system, disinfectants, and antibiotics. Several approaches have been investigated to inhibit and disperse bacterial biofilms, and the use of drug delivery could represent a fascinating strategy. Ciprofloxacin (CIP), which belongs to the class of fluoroquinolones, has been extensively used against various bacterial infections, and its loading in nanocarriers, such as niosomes, could support the CIP antibiofilm activity. Niosomes, composed of two surfactants (Tween 85 and Span 80) without the presence of cholesterol, are prepared and characterized considering the following features: hydrodynamic diameter, ζ-potential, morphology, vesicle bilayer characteristics, physical-chemical stability, and biological efficacy. The obtained results suggest that: (i) niosomes by surfactants in the absence of cholesterol are formed, can entrap CIP, and are stable over time and in artificial biological media; (ii) the CIP inclusion in nanocarriers increase its stability, with respect to free drug; (iii) niosomes preparations were able to induce a relevant inhibition of biofilm formation.
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13
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Ultrastable shelled PFC nanobubbles: A platform for ultrasound-assisted diagnostics, and therapy. NANOMEDICINE: NANOTECHNOLOGY, BIOLOGY AND MEDICINE 2022; 46:102611. [DOI: 10.1016/j.nano.2022.102611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 09/06/2022] [Accepted: 09/23/2022] [Indexed: 11/13/2022]
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14
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Arad E, Yosefi G, Kolusheva S, Bitton R, Rapaport H, Jelinek R. Native Glucagon Amyloids Catalyze Key Metabolic Reactions. ACS NANO 2022; 16:12889-12899. [PMID: 35866668 DOI: 10.1021/acsnano.2c05166] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Glucagon is a prominent peptide hormone, playing central roles in the regulation of glucose blood-level and lipid metabolism. Formation of glucagon amyloid fibrils has been previously reported, although no biological functions of such fibrils are known. Here, we demonstrate that glucagon amyloid fibrils catalyze biologically important reactions, including esterolysis, lipid hydrolysis, and dephosphorylation. In particular, we found that glucagon fibrils catalyze dephosphorylation of adenosine triphosphate (ATP), a core metabolic reaction in cell biology. Comparative analysis of several glucagon variants allowed mapping the catalytic activity to an enzymatic pocket-like triad formed at the glucagon fibril surface, comprising the histidyl-serine domain at the N-terminus of the peptide. This study may point to previously unknown physiological roles and pathological consequences of glucagon fibrillation and supports the hypothesis that catalytic activities of native amyloid fibrils play functional roles in human physiology and disease.
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Affiliation(s)
- Elad Arad
- Ilse Katz Institute (IKI) for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Gal Yosefi
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Sofiya Kolusheva
- Ilse Katz Institute (IKI) for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ronit Bitton
- Ilse Katz Institute (IKI) for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Hanna Rapaport
- Ilse Katz Institute (IKI) for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Ben Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Raz Jelinek
- Ilse Katz Institute (IKI) for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
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15
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Chautrand T, Depayras S, Souak D, Kondakova T, Barreau M, Kentache T, Hardouin J, Tahrioui A, Thoumire O, Konto-Ghiorghi Y, Barbey C, Ladam G, Chevalier S, Heipieper HJ, Orange N, Duclairoir-Poc C. Gaseous NO 2 induces various envelope alterations in Pseudomonas fluorescens MFAF76a. Sci Rep 2022; 12:8528. [PMID: 35595726 PMCID: PMC9122911 DOI: 10.1038/s41598-022-11606-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 04/12/2022] [Indexed: 12/20/2022] Open
Abstract
Anthropogenic atmospheric pollution and immune response regularly expose bacteria to toxic nitrogen oxides such as NO• and NO2. These reactive molecules can damage a wide variety of biomolecules such as DNA, proteins and lipids. Several components of the bacterial envelope are susceptible to be damaged by reactive nitrogen species. Furthermore, the hydrophobic core of the membranes favors the reactivity of nitrogen oxides with other molecules, making membranes an important factor in the chemistry of nitrosative stress. Since bacteria are often exposed to endogenous or exogenous nitrogen oxides, they have acquired protection mechanisms against the deleterious effects of these molecules. By exposing bacteria to gaseous NO2, this work aims to analyze the physiological effects of NO2 on the cell envelope of the airborne bacterium Pseudomonas fluorescens MFAF76a and its potential adaptive responses. Electron microscopy showed that exposure to NO2 leads to morphological alterations of the cell envelope. Furthermore, the proteomic profiling data revealed that these cell envelope alterations might be partly explained by modifications of the synthesis pathways of multiple cell envelope components, such as peptidoglycan, lipid A, and phospholipids. Together these results provide important insights into the potential adaptive responses to NO2 exposure in P. fluorescens MFAF76a needing further investigations.
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Affiliation(s)
- Thibault Chautrand
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
| | - Ségolène Depayras
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
- Praxens, Normandy Health Security Center, 55 rue Saint-Germain, 27000, Evreux, France
| | - Djouhar Souak
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
| | - Tatiana Kondakova
- LPS-BIOSCIENCES SAS, Domaine de l'Université Paris Sud, Bâtiment 430, Université Paris Saclay, 91400, Orsay, France
| | - Magalie Barreau
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
| | - Takfarinas Kentache
- Polymers, Biopolymers, Surface Laboratory, Normandy University, University of Rouen Normandy, INSA Rouen, CNRS, Bâtiment DULONG - Bd Maurice de Broglie, 76821, Mont Saint Aignan Cedex, France
- PISSARO Proteomic Facility, IRIB, 76820, Mont-Saint-Aignan, France
| | - Julie Hardouin
- Polymers, Biopolymers, Surface Laboratory, Normandy University, University of Rouen Normandy, INSA Rouen, CNRS, Bâtiment DULONG - Bd Maurice de Broglie, 76821, Mont Saint Aignan Cedex, France
- PISSARO Proteomic Facility, IRIB, 76820, Mont-Saint-Aignan, France
| | - Ali Tahrioui
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
| | - Olivier Thoumire
- Polymers, Biopolymers, Surface Laboratory, Normandy University, University of Rouen Normandy, INSA Rouen, CNRS, 55 rue Saint-Germain, 27000, Evreux, France
| | - Yoan Konto-Ghiorghi
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
| | - Corinne Barbey
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
| | - Guy Ladam
- Polymers, Biopolymers, Surface Laboratory, Normandy University, University of Rouen Normandy, INSA Rouen, CNRS, 55 rue Saint-Germain, 27000, Evreux, France
| | - Sylvie Chevalier
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
| | - Hermann J Heipieper
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318, Leipzig, Germany
| | - Nicole Orange
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France
| | - Cécile Duclairoir-Poc
- Research Unit Bacterial Communication and Anti-Infectious Strategies (UR CBSA), Normandy University, Univeristy of Rouen Normandy, 55 rue Saint-Germain, 27000, Evreux, France.
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16
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Winslow M, Robinson D. Computational development of a phase-sensitive membrane raft probe. Phys Chem Chem Phys 2022; 24:8260-8268. [PMID: 35319559 DOI: 10.1039/d2cp00431c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Derivatives of the widely used 1,6-diphenyl-1,3,5-hexatriene molecular probe have been considered using a multiscale approach involving spin-flip time-dependent density functional theory, classical molecular dynamics and hybrid quantum mechanics/molecular mechanics. We identify a potential probe of membrane phase (i.e. to preferentially detect liquid-ordered regions of lipid bilayers), which exhibits restricted access to a conical intersection in the liquid-ordered phase but is freely accessible in less ordered molecular environments. The characteristics of this probe also mark it as a candidate for an aggregation induced emission fluorophore.
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Affiliation(s)
- Max Winslow
- Department of Chemistry and Forensics, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.
| | - David Robinson
- Department of Chemistry and Forensics, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.
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17
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Development of Thermo- and pH-Sensitive Liposomal Magnetic Carriers for New Potential Antitumor Thienopyridine Derivatives. MATERIALS 2022; 15:ma15051737. [PMID: 35268967 PMCID: PMC8911087 DOI: 10.3390/ma15051737] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/19/2022] [Accepted: 02/23/2022] [Indexed: 01/07/2023]
Abstract
The development of stimuli-sensitive drug delivery systems is a very attractive area of current research in cancer therapy. The deep knowledge on the microenvironment of tumors has supported the progress of nanosystems' ability for controlled and local fusion as well as drug release. Temperature and pH are two of the most promising triggers in the development of sensitive formulations to improve the efficacy of anticancer agents. Herein, magnetic liposomes with fusogenic sensitivity to pH and temperature were developed aiming at dual cancer therapy (by chemotherapy and magnetic hyperthermia). Magnetic nanoparticles of mixed calcium/manganese ferrite were synthesized by co-precipitation with citrate and by sol-gel method, and characterized by X-ray diffraction (XRD), scanning electron microscopy in transmission mode (STEM), and superconducting quantum interference device (SQUID). The citrate-stabilized nanoparticles showed a small-sized population (around 8 nm, determined by XRD) and suitable magnetic properties, with a low coercivity and high saturation magnetization (~54 emu/g). The nanoparticles were incorporated into liposomes of dipalmitoylphosphatidylcholine/cholesteryl hemisuccinate (DPPC:CHEMS) and of the same components with a PEGylated lipid (DPPC:CHEMS:DSPE-PEG), resulting in magnetoliposomes with sizes around 100 nm. Dynamic light scattering (DLS) and electrophoretic light scattering (ELS) measurements were performed to investigate the pH-sensitivity of the magnetoliposomes' fusogenic ability. Two new antitumor thienopyridine derivatives were efficiently encapsulated in the magnetic liposomes and the drug delivery capability of the loaded nanosystems was evaluated, under different pH and temperature conditions.
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18
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On the temperature‐dependent isomerization of all‐
trans
‐1,6‐diphenyl‐1,3,5‐hexatriene in solution: A reappraisal. J PHYS ORG CHEM 2022. [DOI: 10.1002/poc.4336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Tailoring Niosomes- Implications for Controlled Cargo Release and Function as Nanoreactors. J Fluoresc 2022; 32:907-920. [PMID: 35102460 DOI: 10.1007/s10895-022-02894-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 01/18/2022] [Indexed: 10/19/2022]
Abstract
Nonionic surfactant vesicles (Niosomes) were prepared using polyoxyethylene alkyl ether (Brij 58).The impact of variation of the Brij: cholesterol molar ratio on the niosomal structure was studied. Fluorescence studies performed with the membrane probe 1,6-Diphenyl-1,3,5-triene (DPH) gave important insight on the bilayer integrity of the niosomes in response to environmental perturbations. The aim of the work being assessment of the efficacy of the niosomes as "drug release vehicles", release studies were performed with a xanthene dye Carboxyfluorescein (CF). Further, the vesicles were used as nanoreactors for the synthesis of gold nanoparticles (GNPs) as it is often useful to house nanoparticles in biological /biomimicking environments. Stable, spherical GNPs of diameter 6-10 nm were formed in these vesicles. As the vesicular bilayer mimics the cell membrane, the present work is relevant to the use of the GNPs for diagnostic and therapeutic purpose. It has also been established that fluorescence resonance energy transfer (FRET) effectively occurs between DPH and CF in the niosomes. The FRET studies provide important insight on the location of dyes within the vesicles thus indicating the prospective applications of this fluorescence technique for tracking the location of probes in biomimicking systems which maybe extrapolated to in vivo biological systems in future.
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20
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Kumashiro M, Tsuji R, Suenaga S, Matsuo K. Formation of β-Strand Oligomers of Antimicrobial Peptide Magainin 2 Contributes to Disruption of Phospholipid Membrane. MEMBRANES 2022; 12:131. [PMID: 35207051 PMCID: PMC8877076 DOI: 10.3390/membranes12020131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 12/15/2022]
Abstract
The antimicrobial peptide magainin 2 (M2) interacts with and induces structural damage in bacterial cell membranes. Although extensive biophysical studies have revealed the interaction mechanism between M2 and membranes, the mechanism of membrane-mediated oligomerization of M2 is controversial. Here, we measured the synchrotron-radiation circular dichroism and linear dichroism (LD) spectra of M2 in dipalmitoyl-phosphatidylglycerol lipid membranes in lipid-to-peptide (L/P) molar ratios from 0-26 to characterize the conformation and orientation of M2 on the membrane. The results showed that M2 changed from random coil to α-helix structures via an intermediate state with increasing L/P ratio. Singular value decomposition analysis supported the presence of the intermediate state, and global fitting analysis revealed that M2 monomers with an α-helix structure assembled and transformed into M2 oligomers with a β-strand-rich structure in the intermediate state. In addition, LD spectra showed the presence of β-strand structures in the intermediate state, disclosing their orientations on the membrane surface. Furthermore, fluorescence spectroscopy showed that the formation of β-strand oligomers destabilized the membrane structure and induced the leakage of calcein molecules entrapped in the membrane. These results suggest that the formation of β-strand oligomers of M2 plays a crucial role in the disruption of the cell membrane.
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Affiliation(s)
- Munehiro Kumashiro
- Department of Physical Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan; (M.K.); (S.S.)
| | - Ryoga Tsuji
- Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan;
| | - Shoma Suenaga
- Department of Physical Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan; (M.K.); (S.S.)
| | - Koichi Matsuo
- Department of Physical Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan; (M.K.); (S.S.)
- Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan;
- Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
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21
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Gasecka P, Balla NK, Sison M, Brasselet S. Lipids-Fluorophores Interactions Probed by Combined Nonlinear Polarized Microscopy. J Phys Chem B 2021; 125:13718-13729. [PMID: 34902969 DOI: 10.1021/acs.jpcb.1c07866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Studying the structural dynamics of lipid membranes requires methods that can address both microscopic and macroscopic characteristics. Fluorescence imaging is part of the most used techniques to study membrane properties in various systems from artificial membranes to cells: It benefits from a high sensitivity to local properties such as polarity and molecular orientational order, with a high spatial resolution down to the single-molecule level. The influence of embedded fluorescent lipid probes on the lipid membrane molecules is however poorly known and relies most often on molecular dynamics simulations, due to the challenges faced by experimental approaches to address the molecular-scale dimension of this question. In this work we develop an optical microscopy imaging method to probe the effect of fluorophores embedded in the membrane as lipid probes, on their lipid environment, with a lateral resolution of a few hundreds of nanometers. We combine polarized-nonlinear microscopy contrasts that can independently address the lipid probe, by polarized two-photon fluorescence, and the membrane lipids, by polarized coherent Raman scattering. Using trimethylamino derivative 1-(4-trimethylammonium-phenyl)-6-phenyl-1,3,5-hexatriene (TMA-DPH) and di-8-butyl-amino-naphthyl-ethylene-pyridinium-propyl-sulfonate (di-8-ANEPPS) as model probes, we show that both probes tend to induce an orientational disorder of their surrounding lipid CH-bonds in 1,2-dipalmitoylphosphatidylcholine (DPPC) lipids environments, while there is no noticeable effect in more disordered 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) lipid membranes.
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Affiliation(s)
- Paulina Gasecka
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, F-13013 Marseille, France
| | - Naveen K Balla
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, F-13013 Marseille, France
| | - Miguel Sison
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, F-13013 Marseille, France
| | - Sophie Brasselet
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, F-13013 Marseille, France
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22
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Paulucci NS, Cesari AB, Biasutti MA, Dardanelli MS, Perillo MA. Membrane Homeoviscous Adaptation in Sinorhizobium Submitted to a Stressful Thermal Cycle Contributes to the Maintenance of the Symbiotic Plant–Bacteria Interaction. Front Microbiol 2021; 12:652477. [PMID: 34975776 PMCID: PMC8718912 DOI: 10.3389/fmicb.2021.652477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 11/15/2021] [Indexed: 12/02/2022] Open
Abstract
Here, we estimate fast changes in the fluidity of Sinorhizobium meliloti membranes submitted to cyclic temperature changes (10°C–40°C–10°C) by monitoring the fluorescence polarization (P) of DPH and TMA-DPH of the whole cell (WC) as well as in its outer (OM) and inner (IM) membranes. Additionally, the long-term response to thermal changes is demonstrated through the dynamics of the phospholipid and fatty acid composition in each membrane. This allowed membrane homeoviscous adaptation by the return to optimal fluidity levels as measured by the PDPH/TMA-DPH in WC, OM, IM, and multilamellar vesicles of lipids extracted from OM and IM. Due to probe-partitioning preferences and membranes’ compositional characteristics, DPH and TMA-DPH exhibit different behaviors in IM and OM. The rapid effect of cyclic temperature changes on the P was the opposite in both membranes with the IM being the one that exhibited the thermal behavior expected for lipid bilayers. Interestingly, only after the incubation at 40°C, cells were unable to recover the membrane preheating P levels when cooled up to 10°C. Solely in this condition, the formation of threads and nodular structures in Medicago sativa infected with S. meliloti were delayed, indicating that the symbiotic interaction was partially altered but not halted.
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Affiliation(s)
- Natalia Soledad Paulucci
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Cuarto, Argentina
- *Correspondence: Natalia Soledad Paulucci,
| | - Adriana Belén Cesari
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Cuarto, Argentina
| | - María Alicia Biasutti
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Departamento de Química, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Cuarto, Argentina
| | - Marta Susana Dardanelli
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Cuarto, Argentina
- Marta Susana Dardanelli,
| | - María Angélica Perillo
- Facultad de Ciencias Exactas, Físicas y Naturales, Instituto de Ciencia y Tecnología de Alimentos (ICTA), Departamento de Química, Cátedra de Química Biológica, Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
- María Angélica Perillo,
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23
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Minnelli C, Laudadio E, Fiorini R, Galeazzi R, Armeni T, Stipa P, Rusciano D, Mobbili G. Influence of a lipophilic edaravone on physical state and activity of antioxidant liposomes: An experimental and in silico study. Colloids Surf B Biointerfaces 2021; 210:112217. [PMID: 34836703 DOI: 10.1016/j.colsurfb.2021.112217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022]
Abstract
The influence of a lipophilic derivative of Edaravone (C18Edv) on a POPC liposomal bilayer has been investigated by a combined computational-experimental approach. The order and hydration degree of three different systems composed by 10%, 20% and 40% in w/w percentage of C18Edv respect to POPC were investigated through Molecular Dynamics (MD) simulations and fluorescence spectroscopy experiments. Dynamic Light Scattering measurements showed how the presence of different amounts of C18EdV determines differences on liposome size and stability. The survey revealed that the content of lipophilic antioxidant tunes liposome rigidity and influences cellular uptake and antioxidant activity which are maximized for formulation containing 20% of C18Edv.
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Affiliation(s)
- Cristina Minnelli
- Dipartimento di Scienze della Vita e dell'Ambiente (DISVA), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Emiliano Laudadio
- Dipartimento di Scienze e Ingegneria della Materia, dell'Ambiente e Urbanistica (SIMAU), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Rosamaria Fiorini
- Dipartimento di Scienze della Vita e dell'Ambiente (DISVA), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Roberta Galeazzi
- Dipartimento di Scienze della Vita e dell'Ambiente (DISVA), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Tatiana Armeni
- Dipartimento Scienze Cliniche Specialistiche ed Odontostomatologiche, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | - Pierluigi Stipa
- Dipartimento di Scienze e Ingegneria della Materia, dell'Ambiente e Urbanistica (SIMAU), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy
| | | | - Giovanna Mobbili
- Dipartimento di Scienze della Vita e dell'Ambiente (DISVA), Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy.
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24
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Zhang R, Barreras Beltran IA, Ashford NK, Penewit K, Waalkes A, Holmes EA, Hines KM, Salipante SJ, Xu L, Werth BJ. Synergy Between Beta-Lactams and Lipo-, Glyco-, and Lipoglycopeptides, Is Independent of the Seesaw Effect in Methicillin-Resistant Staphylococcus aureus. Front Mol Biosci 2021; 8:688357. [PMID: 34646861 PMCID: PMC8503943 DOI: 10.3389/fmolb.2021.688357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/20/2021] [Indexed: 12/22/2022] Open
Abstract
Methicillin-resistant S. aureus (MRSA) are resistant to beta-lactams, but synergistic activity between beta-lactams and glycopeptides/lipopeptides is common. Many have attributed this synergy to the beta-lactam-glycopeptide seesaw effect; however, this association has not been rigorously tested. The objective of this study was to determine whether the seesaw effect is necessary for synergy and to measure the impact of beta-lactam exposure on lipid metabolism. We selected for three isogenic strains with reduced susceptibility to vancomycin, daptomycin, and dalbavancin by serial passaging the MRSA strain N315. We used whole genome sequencing to identify genetic variants that emerged and tested for synergy between vancomycin, daptomycin, or dalbavancin in combination with 6 beta-lactams with variable affinity for staphylococcal penicillin binding proteins (PBPs), including nafcillin, meropenem, ceftriaxone, ceftaroline, cephalexin, and cefoxitin, using time-kills. We observed that the seesaw effect with each beta-lactam was variable and the emergence of the seesaw effect for a particular beta-lactam was not necessary for synergy between that beta-lactam and vancomycin, daptomycin, or dalbavancin. Synergy was more commonly observed with vancomycin and daptomycin based combinations than dalbavancin in time-kills. Among the beta-lactams, cefoxitin and nafcillin were the most likely to exhibit synergy using the concentrations tested, while cephalexin was the least likely to exhibit synergy. Synergy was more common among the resistant mutants than the parent strain. Interestingly N315-D1 and N315-DAL0.5 both had mutations in vraTSR and walKR despite their differences in the seesaw effect. Lipidomic analysis of all strains exposed to individual beta-lactams at subinhibitory concentrations suggested that in general, the abundance of cardiolipins (CLs) and most free fatty acids (FFAs) positively correlated with the presence of synergistic effects while abundance of phosphatidylglycerols (PGs) and lysylPGs mostly negatively correlated with synergistic effects. In conclusion, the beta-lactam-glycopeptide seesaw effect and beta-lactam-glycopeptide synergy are distinct phenomena. This suggests that the emergence of the seesaw effect may not have clinical importance in terms of predicting synergy. Further work is warranted to characterize strains that don't exhibit beta-lactam synergy to identify which strains should be targeted with combination therapy and which ones cannot and to further investigate the potential role of CLs in mediating synergy.
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Affiliation(s)
- Rutan Zhang
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, WA, United States
| | | | - Nathaniel K. Ashford
- Department of Pharmacy, School of Pharmacy, University of Washington, Seattle, WA, United States
| | - Kelsi Penewit
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Washington, Seattle, WA, United States
| | - Adam Waalkes
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Washington, Seattle, WA, United States
| | - Elizabeth A. Holmes
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Washington, Seattle, WA, United States
| | - Kelly M. Hines
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, WA, United States
| | - Stephen J. Salipante
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Washington, Seattle, WA, United States
| | - Libin Xu
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, WA, United States
| | - Brian J. Werth
- Department of Pharmacy, School of Pharmacy, University of Washington, Seattle, WA, United States
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25
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Kamel M, Löwe M, Schott-Verdugo S, Gohlke H, Kedrov A. Unsaturated fatty acids augment protein transport via the SecA:SecYEG translocon. FEBS J 2021; 289:140-162. [PMID: 34312977 DOI: 10.1111/febs.16140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/01/2021] [Accepted: 07/23/2021] [Indexed: 12/22/2022]
Abstract
The translocon SecYEG and the associated ATPase SecA form the primary protein secretion system in the cytoplasmic membrane of bacteria. The secretion is essentially dependent on the surrounding lipids, but the mechanistic understanding of their role in SecA : SecYEG activity is sparse. Here, we reveal that the unsaturated fatty acids (UFAs) of the membrane phospholipids, including tetraoleoyl-cardiolipin, stimulate SecA : SecYEG-mediated protein translocation up to ten-fold. Biophysical analysis and molecular dynamics simulations show that UFAs increase the area per lipid and cause loose packing of lipid head groups, where the N-terminal amphipathic helix of SecA docks. While UFAs do not affect the translocon folding, they promote SecA binding to the membrane, and the effect is enhanced up to fivefold at elevated ionic strength. Tight SecA : lipid interactions convert into the augmented translocation. Our results identify the fatty acid structure as a notable factor in SecA : SecYEG activity, which may be crucial for protein secretion in bacteria, which actively change their membrane composition in response to their habitat.
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Affiliation(s)
- Michael Kamel
- Synthetic Membrane Systems, Institute for Biochemistry, Heinrich Heine University Düsseldorf, Germany
| | - Maryna Löwe
- Synthetic Membrane Systems, Institute for Biochemistry, Heinrich Heine University Düsseldorf, Germany
| | - Stephan Schott-Verdugo
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Germany.,John von Neumann Institute for Computing (NIC), Jülich Supercomputing Centre (JSC), Institute of Biological Information Processing (IBI-7: Structural Bioinformatics), and Institute of Bio- and Geosciences (IBG-4: Bioinformatics), Forschungszentrum Jülich GmbH, Germany
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Germany.,John von Neumann Institute for Computing (NIC), Jülich Supercomputing Centre (JSC), Institute of Biological Information Processing (IBI-7: Structural Bioinformatics), and Institute of Bio- and Geosciences (IBG-4: Bioinformatics), Forschungszentrum Jülich GmbH, Germany
| | - Alexej Kedrov
- Synthetic Membrane Systems, Institute for Biochemistry, Heinrich Heine University Düsseldorf, Germany
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26
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Rinaldi F, Hanieh PN, Sennato S, De Santis F, Forte J, Fraziano M, Casciardi S, Marianecci C, Bordi F, Carafa M. Rifampicin-Liposomes for Mycobacterium abscessus Infection Treatment: Intracellular Uptake and Antibacterial Activity Evaluation. Pharmaceutics 2021; 13:1070. [PMID: 34371761 PMCID: PMC8309174 DOI: 10.3390/pharmaceutics13071070] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/05/2021] [Accepted: 07/08/2021] [Indexed: 11/17/2022] Open
Abstract
Treatment of pulmonary infections caused by Mycobacterium abscessus are extremely difficult to treat, as this species is naturally resistant to many common antibiotics. Liposomes are vesicular nanocarriers suitable for hydrophilic and lipophilic drug loading, able to deliver drugs to the target site, and successfully used in different pharmaceutical applications. Moreover, liposomes are biocompatible, biodegradable and nontoxic vesicles and nebulized liposomes are efficient in targeting antibacterial agents to macrophages. The present aim was to formulate rifampicin-loaded liposomes (RIF-Lipo) for lung delivery, in order to increase the local concentration of the antibiotic. Unilamellar liposomal vesicles composed of anionic DPPG mixed with HSPC for rifampicin delivery were designed, prepared, and characterized. Samples were prepared by using the thin-film hydration method. RIF-Lipo and unloaded liposomes were characterized in terms of size, ζ-potential, bilayer features, stability and in different biological media. Rifampicin's entrapment efficiency and release were also evaluated. Finally, biological activity of RIF-loaded liposomes in Mycobacterium abscessus-infected macrophages was investigated. The results show that RIF-lipo induce a significantly better reduction of intracellular Mycobacterium abscessus viability than the treatment with free drug. Liposome formulation of rifampicin may represent a valuable strategy to enhance the biological activity of the drug against intracellular mycobacteria.
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Affiliation(s)
- Federica Rinaldi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
| | - Patrizia Nadia Hanieh
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
| | - Simona Sennato
- Istituto dei Sistemi Complessi (ISC)-CNR, sede “Sapienza” and Dipartimento di Fisica, Sapienza Università di Roma, 00185 Rome, Italy;
| | - Federica De Santis
- Dipartimento di Biologia, Università di Roma “Tor Vergata” Via della Ricerca Scientifica, 00133 Rome, Italy; (F.D.S.); (M.F.)
| | - Jacopo Forte
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
| | - Maurizio Fraziano
- Dipartimento di Biologia, Università di Roma “Tor Vergata” Via della Ricerca Scientifica, 00133 Rome, Italy; (F.D.S.); (M.F.)
| | - Stefano Casciardi
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, National Institute for Insurance against Accidents at Work (INAIL), Monteporzio Catone, 00144 Rome, Italy;
| | - Carlotta Marianecci
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
| | - Federico Bordi
- Istituto dei Sistemi Complessi (ISC)-CNR, sede “Sapienza” and Dipartimento di Fisica, Sapienza Università di Roma, 00185 Rome, Italy;
| | - Maria Carafa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma-Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.R.); (P.N.H.); (J.F.); (M.C.)
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27
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Rzycki M, Drabik D, Szostak-Paluch K, Hanus-Lorenz B, Kraszewski S. Unraveling the mechanism of octenidine and chlorhexidine on membranes: Does electrostatics matter? Biophys J 2021; 120:3392-3408. [PMID: 34214528 PMCID: PMC8391085 DOI: 10.1016/j.bpj.2021.06.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/26/2021] [Accepted: 06/22/2021] [Indexed: 11/20/2022] Open
Abstract
The increasing problem of antibiotic resistance in bacteria requires the development of new antimicrobial candidates. There are several well-known substances with commercial use, but their molecular mode of action is not fully understood. In this work, we focus on two commonly used antimicrobial agents from the detergent family—octenidine dichloride (OCT) and chlorhexidine digluconate (CHX). Both of them are reported to be agents selectively attacking the cell membrane through interaction inducing membrane disruption by emulsification. They are believed to present electrostatic selectivity toward charged lipids. In this study, we tested this hypothesis and revised previously proposed molecular mechanisms of action. Employing a variety of techniques such as molecular dynamics, ζ potential with dynamic light scattering, vesicle fluctuation spectroscopy, carboxyfluorescein leakage measurement, and fluorescence trimethylammonium-diphenylhexatriene- and diphenylhexatriene-based studies for determination of OCT and CHX membrane location, we performed experimental studies using two model membrane systems—zwitterionic PC and negatively charged PG (18:1/18:1):PC (16:0/18:1) 3:7, respectively. These studies were extended by molecular dynamics simulations performed on a three-component bacterial membrane model system to further test interactions with another negatively charged lipid, cardiolipin. In summary, our study demonstrated that detergent selectivity is far more complicated than supposed simple electrostatic interactions. Although OCT does disrupt the membrane, our results suggest that its primary selectivity was more linked to mechanical properties of the membrane. On the other hand, CHX did not disrupt membranes as a primary activity, nor did it show any sign of electrostatic selectivity toward negatively charged membranes at any stage of interactions, which suggests membrane disruption by influencing more discrete membrane properties.
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Affiliation(s)
- Mateusz Rzycki
- Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland; Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland.
| | - Dominik Drabik
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland; Laboratory of Cytobiochemistry, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Kamila Szostak-Paluch
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland; Research and Development Center, Regional Specialized Hospital, Wroclaw, Poland
| | - Beata Hanus-Lorenz
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Sebastian Kraszewski
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland
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28
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Li MH, Manathunga L, London E, Raleigh DP. The Fluorescent Dye 1,6-Diphenyl-1,3,5-hexatriene Binds to Amyloid Fibrils Formed by Human Amylin and Provides a New Probe of Amylin Amyloid Kinetics. Biochemistry 2021; 60:1964-1970. [PMID: 34128641 DOI: 10.1021/acs.biochem.1c00328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The fluorescent dye 1,6-diphenyl-1,3,5-hexatriene (DPH) is widely used as a probe of membrane order. We show that DPH also interacts with amyloid fibrils formed by human amylin (h-amylin, also known as islet amyloid polypeptide) in solution, and this results in a 100-fold increase in DPH fluorescence for a sample of 20 μM h-amylin and 0.25 μM DPH. No increase in DPH fluorescence is observed with the non-amyloidogenic rat amylin or with freshly dissolved, nonfibrillar h-amylin. The time course of amyloid formation by amylin was followed by monitoring the fluorescence of added DPH as a function of time and was similar to that monitored by the standard fluorescent probe thioflavin-T. The inclusion of DPH in the buffer did not perturb the time course of amyloid formation under the conditions examined, and the time course was independent of the range of DPH concentrations tested (0.25-5 μM). The maximum final fluorescence intensity is observed at substoichiometric ratios of DPH to amylin. No significant increase in fluorescence was observed during the lag phase of amyloid formation, and the implications for the structure of amylin prefibril oligomers are discussed. h-Amylin contains three aromatic residues. A triple aromatic to leucine mutant forms amyloid, and DPH binds to the resulting fibrils, indicating that interactions with aromatic side chains are not required for DPH-amylin amyloid interactions. DPH may be especially useful for studies of mutant amylins and other polypeptides in which changes in charged residues might complicate interpretation of thioflavin-T fluorescence.
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Affiliation(s)
- Ming-Hao Li
- Graduate Program in Biochemistry and Structural Biology, Stony Brook University, Stony Brook, New York 11794, United States
| | - Lakshan Manathunga
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States.,Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, New York 11794, United States
| | - Erwin London
- Graduate Program in Biochemistry and Structural Biology, Stony Brook University, Stony Brook, New York 11794, United States.,Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States.,Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York 11794, United States
| | - Daniel P Raleigh
- Graduate Program in Biochemistry and Structural Biology, Stony Brook University, Stony Brook, New York 11794, United States.,Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States.,Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, New York 11794, United States
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29
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Hanieh PN, Forte J, Di Meo C, Ammendolia MG, Del Favero E, Cantù L, Rinaldi F, Marianecci C, Carafa M. Hyaluronic Acid Derivative Effect on Niosomal Coating and Interaction with Cellular Mimetic Membranes. Molecules 2021; 26:molecules26113434. [PMID: 34198955 PMCID: PMC8201220 DOI: 10.3390/molecules26113434] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/28/2021] [Accepted: 06/01/2021] [Indexed: 12/11/2022] Open
Abstract
Hyaluronic acid (HA) is one of the most used biopolymers in the development of drug delivery systems, due to its biocompatibility, biodegradability, non-immunogenicity and intrinsic-targeting properties. HA specifically binds to CD44; this property combined to the EPR effect could provide an option for reinforced active tumor targeting by nanocarriers, improving drug uptake by the cancer cells via the HA-CD44 receptor-mediated endocytosis pathway. Moreover, HA can be easily chemically modified to tailor its physico-chemical properties in view of specific applications. The derivatization with cholesterol confers to HA an amphiphilic character, and then the ability of anchoring to niosomes. HA-Chol was then used to coat Span® or Tween® niosomes providing them with an intrinsic targeting shell. The nanocarrier physico-chemical properties were analyzed in terms of hydrodynamic diameter, ζ-potential, and bilayer structural features to evaluate the difference between naked and HA-coated niosomes. Niosomes stability was evaluated over time and in bovine serum. Moreover, interaction properties of HA-coated nanovesicles with model membranes, namely liposomes, were studied, to obtain insights on their interaction behavior with biological membranes in future experiments. The obtained coated systems showed good chemical physical features and represent a good opportunity to carry out active targeting strategies.
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Affiliation(s)
- Patrizia N. Hanieh
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
| | - Jacopo Forte
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
| | - Chiara Di Meo
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
| | - Maria Grazia Ammendolia
- Centro Nazionale Tecnologie Innovative in Sanità Pubblica, Istituto Superiore di Sanità, Viale Regina Elena 299, 00162 Rome, Italy;
| | - Elena Del Favero
- Laboratorio Interdisciplinare Tecnologie Avanzate (L.I.T.A.), Department of Medical Biotechnologies and Translational Medicine, University of Milan, Via Fratelli Cervi 93, 20090 Segrate, Italy; (E.D.F.); (L.C.)
| | - Laura Cantù
- Laboratorio Interdisciplinare Tecnologie Avanzate (L.I.T.A.), Department of Medical Biotechnologies and Translational Medicine, University of Milan, Via Fratelli Cervi 93, 20090 Segrate, Italy; (E.D.F.); (L.C.)
| | - Federica Rinaldi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
- Correspondence: (F.R.); (C.M.)
| | - Carlotta Marianecci
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
- Correspondence: (F.R.); (C.M.)
| | - Maria Carafa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
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Han J, Iimure Y, Okamoto Y, Suga K, Umakoshi H. Structure and Properties Characterization of Amphiphilic Dendrons Modified Lipid Membrane. CHEM LETT 2021. [DOI: 10.1246/cl.200633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jin Han
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Yosuke Iimure
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Yukihiro Okamoto
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Keishi Suga
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki-aza, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Hiroshi Umakoshi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
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Frias MA, Disalvo EA. Breakdown of classical paradigms in relation to membrane structure and functions. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1863:183512. [PMID: 33202248 DOI: 10.1016/j.bbamem.2020.183512] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 01/10/2023]
Abstract
Updates of the mosaic fluid membrane model implicitly sustain the paradigms that bilayers are closed systems conserving a state of fluidity and behaving as a dielectric slab. All of them are a consequence of disregarding water as part of the membrane structure and its essential role in the thermodynamics and kinetics of membrane response to bioeffectors. A correlation of the thermodynamic properties with the structural features of water makes possible to introduce the lipid membrane as a responsive structure due to the relaxation of water rearrangements in the kinetics of bioeffectors' interactions. This analysis concludes that the lipid membranes are open systems and, according to thermodynamic of irreversible formalism, bilayers and monolayers can be reasonable compared under controlled conditions. The inclusion of water in the complex structure makes feasible to reconsider the concept of dielectric slab and fluidity.
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Affiliation(s)
- M A Frias
- Applied Biophysics and Food Research Center, CIBAAL-UNSE-CONICET, Santiago del Estero, Argentina
| | - E A Disalvo
- Applied Biophysics and Food Research Center, CIBAAL-UNSE-CONICET, Santiago del Estero, Argentina.
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Evans KO, Skory C, Compton DL, Cormier R, Côté GL, Kim S, Appell M. Development and Physical Characterization of α-Glucan Nanoparticles. Molecules 2020; 25:E3807. [PMID: 32825708 PMCID: PMC7503850 DOI: 10.3390/molecules25173807] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 11/18/2022] Open
Abstract
α-Glucans that were enzymatically synthesized from sucrose using glucansucrase cloned from Leuconostoc mesenteroides NRRL B-1118 were found to have a glass transition temperature of approximately 80 °C. Using high-pressure homogenization (~70 MPa), the α-glucans were converted into nanoparticles of ~120 nm in diameter with a surface potential of ~-3 mV. Fluorescence measurements using 1,6-diphenyl-1,3,5-hexatriene (DPH) indicate that the α-glucan nanoparticles have a hydrophobic core that remains intact from 10 to 85 °C. α-Glucan nanoparticles were found to be stable for over 220 days and able to form at three pH levels. Accelerated exposure measurements demonstrated that the α-glucan nanoparticles can endure exposure to elevated temperatures up to 60 °C for 6 h intervals.
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Affiliation(s)
- Kervin O. Evans
- Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, USDA, 1815 N, University Street, Peoria, IL 61604, USA; (C.S.); (D.L.C.); (R.C.); (G.L.C.)
| | - Christopher Skory
- Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, USDA, 1815 N, University Street, Peoria, IL 61604, USA; (C.S.); (D.L.C.); (R.C.); (G.L.C.)
| | - David L. Compton
- Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, USDA, 1815 N, University Street, Peoria, IL 61604, USA; (C.S.); (D.L.C.); (R.C.); (G.L.C.)
| | - Ryan Cormier
- Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, USDA, 1815 N, University Street, Peoria, IL 61604, USA; (C.S.); (D.L.C.); (R.C.); (G.L.C.)
| | - Gregory L. Côté
- Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, USDA, 1815 N, University Street, Peoria, IL 61604, USA; (C.S.); (D.L.C.); (R.C.); (G.L.C.)
| | - Sanghoon Kim
- Plant Polymer Research Unit, National Center for Agricultural Utilization Research, USDA, 1815 N. University Street, Peoria, IL 61604, USA;
| | - Michael Appell
- Mycotoxin Prevention and Applied Microbiology Research Unit, National Center for Agricultural Utilization Research, USDA, 1815 N. University Street, Peoria, IL 61604, USA;
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Filipe HAL, Moreno MJ, Loura LMS. The Secret Lives of Fluorescent Membrane Probes as Revealed by Molecular Dynamics Simulations. Molecules 2020; 25:E3424. [PMID: 32731549 PMCID: PMC7435664 DOI: 10.3390/molecules25153424] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 07/23/2020] [Accepted: 07/25/2020] [Indexed: 12/15/2022] Open
Abstract
Fluorescent probes have been employed for more than half a century to study the structure and dynamics of model and biological membranes, using spectroscopic and/or microscopic experimental approaches. While their utilization has led to tremendous progress in our knowledge of membrane biophysics and physiology, in some respects the behavior of bilayer-inserted membrane probes has long remained inscrutable. The location, orientation and interaction of fluorophores with lipid and/or water molecules are often not well known, and they are crucial for understanding what the probe is actually reporting. Moreover, because the probe is an extraneous inclusion, it may perturb the properties of the host membrane system, altering the very properties it is supposed to measure. For these reasons, the need for independent methodologies to assess the behavior of bilayer-inserted fluorescence probes has been recognized for a long time. Because of recent improvements in computational tools, molecular dynamics (MD) simulations have become a popular means of obtaining this important information. The present review addresses MD studies of all major classes of fluorescent membrane probes, focusing in the period between 2011 and 2020, during which such work has undergone a dramatic surge in both the number of studies and the variety of probes and properties accessed.
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Affiliation(s)
- Hugo A. L. Filipe
- Chemistry Department, Coimbra Chemistry Center, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal;
| | - Maria João Moreno
- Coimbra Chemistry Center and CNC—Center for Neuroscience and Cell Biology, Chemistry Department, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal;
| | - Luís M. S. Loura
- Coimbra Chemistry Center and CNC—Center for Neuroscience and Cell Biology, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
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Cardoso BD, Rodrigues ARO, Almeida BG, Amorim CO, Amaral VS, Castanheira EMS, Coutinho PJG. Stealth Magnetoliposomes Based on Calcium-Substituted Magnesium Ferrite Nanoparticles for Curcumin Transport and Release. Int J Mol Sci 2020; 21:ijms21103641. [PMID: 32455630 PMCID: PMC7279386 DOI: 10.3390/ijms21103641] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/06/2020] [Accepted: 05/19/2020] [Indexed: 11/16/2022] Open
Abstract
Despite the promising pharmacological properties of curcumin, the transport and effective release of curcumin is still a challenge. The advances in functionalized nanocarriers for curcumin have also been motivated by the anticancer activity of this natural compound, aiming at targeted therapies. Here, stealth (aqueous and solid) magnetoliposomes containing calcium-substituted magnesium ferrite nanoparticles, CaxMg1−xFe2O4 (with x = 0.25, 0.50, 0.75) were developed as nanocarriers for curcumin. The magnetic nanoparticles exhibit superparamagnetic properties and crystalline structure, with sizes below 10 nm. The magnetoliposomes based on these nanoparticles have hydrodynamic diameters around or below 150 nm and a low polydispersity. The influence of an alternating magnetic field (AMF) on drug release over time was evaluated and compared with curcumin release by diffusion. The results suggest the potential of drug-loaded magnetoliposomes as nanocarriers that can be magnetically guided to the tumor sites and act as agents for a synergistic effect combining magnetic hyperthermia and controlled drug release.
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Affiliation(s)
- Beatriz D. Cardoso
- Centre of Physics (CFUM), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (B.D.C.); (A.R.O.R.); (B.G.A.); (E.M.S.C.)
| | - Ana Rita O. Rodrigues
- Centre of Physics (CFUM), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (B.D.C.); (A.R.O.R.); (B.G.A.); (E.M.S.C.)
| | - Bernardo G. Almeida
- Centre of Physics (CFUM), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (B.D.C.); (A.R.O.R.); (B.G.A.); (E.M.S.C.)
| | - Carlos O. Amorim
- Physics Department and CICECO, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (C.O.A.); (V.S.A.)
| | - Vítor S. Amaral
- Physics Department and CICECO, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (C.O.A.); (V.S.A.)
| | - Elisabete M. S. Castanheira
- Centre of Physics (CFUM), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (B.D.C.); (A.R.O.R.); (B.G.A.); (E.M.S.C.)
| | - Paulo J. G. Coutinho
- Centre of Physics (CFUM), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (B.D.C.); (A.R.O.R.); (B.G.A.); (E.M.S.C.)
- Correspondence:
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Charron DM, Yousefalizadeh G, Buzzá HH, Rajora MA, Chen J, Stamplecoskie KG, Zheng G. Photophysics of J-Aggregating Porphyrin-Lipid Photosensitizers in Liposomes: Impact of Lipid Saturation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5385-5393. [PMID: 32338515 DOI: 10.1021/acs.langmuir.0c00843] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Porphyrin aggregates have attractive photophysical properties for phototherapy and optical imaging, including quenched photosensitization, efficient photothermal conversion, and unique absorption spectra. Although hydrophobic porphyrin photosensitizers have long been encapsulated into liposomes for drug delivery, little is known about the membrane properties of liposomes with large amphiphilic porphyrin compositions. In this paper, a porphyrin-lipid conjugate was incorporated into liposomes formed of saturated or unsaturated lipids to study the membrane composition-dependent formation of highly ordered porphyrin J-aggregates and disordered aggregates. Porphyrin-lipid readily phase-separates in saturated membranes, forming J-aggregates that are destabilized during the ripple phase below the main thermal transition. Porphyrin-lipid J-aggregates are photostable with a photothermal efficiency of 54 ± 6%, comparable to gold. Even at high porphyrin-lipid compositions, porphyrin J-aggregates coexist with a minority population of disordered aggregates, which are photodynamically active despite being fluorescently quenched. For photothermal applications, liposome formulations that encourage porphyrin-lipid phase separation should be explored for maximum J-aggregation.
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Affiliation(s)
- Danielle M Charron
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | | | - Hilde H Buzzá
- São Carlos Institute of Physics, University of São Paulo (USP), CEP 13563-120 São Carlos, Brazil
| | - Maneesha A Rajora
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Juan Chen
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | | | - Gang Zheng
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 1L7, Canada
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Bhardwaj P, Tripathi P, Gupta R, Pandey S. Niosomes: A review on niosomal research in the last decade. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101581] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Calori IR, Caetano W, Tedesco AC, Hioka N. Determination of critical micelle temperature of Pluronic® in Pluronic/gel phase liposome mixtures using steady-state anisotropy. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Raut S, Garud A, Nagarajan B, Sabnis N, Remaley A, Fudala R, Gryczynski I, Gryczynski Z, Dzyuba SV, Borejdo J, Lacko A. Probing the Assembly of HDL Mimetic, Drug Carrying Nanoparticles Using Intrinsic Fluorescence. J Pharmacol Exp Ther 2020; 373:113-121. [PMID: 31941718 PMCID: PMC7160862 DOI: 10.1124/jpet.119.262899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/13/2019] [Indexed: 12/27/2022] Open
Abstract
Reconstituted high-density lipoprotein (HDL) containing apolipoprotein A-I (Apo A-I) mimics the structure and function of endogenous (human plasma) HDL due to its function and potential therapeutic utility in atherosclerosis, cancer, neurodegenerative diseases, and inflammatory diseases. Recently, a new class of HDL mimetics has emerged, involving peptides with amino acid sequences that simulate the the primary structure of the amphipathic alpha helices within the Apo A-I protein. The findings reported in this communication were obtained using a similar amphiphilic peptide (modified via conjugation of a myristic acid residue at the amino terminal aspartic acid) that self-assembles (by itself) into nanoparticles while retaining the key features of endogenous HDL. The studies presented here involve the macromolecular assembly of the myristic acid conjugated peptide (MYR-5A) into nanomicellar structures and its characterization via steady-state and time-resolved fluorescence spectroscopy. The structural differences between the free peptide (5A) and MYR-5A conjugate were also probed, using tryptophan fluorescence, Fӧrster resonance energy transfer (FRET), dynamic light scattering, and gel exclusion chromatography. To our knowledge, this is the first report of a lipoprotein assembly generated from a single ingredient and without a separate lipid component. The therapeutic utility of these nanoparticles (due to their capablity to incorporate a wide range of drugs into their core region for targeted delivery) was also investigated by probing the role of the scavenger receptor type B1 in this process. SIGNIFICANCE STATEMENT: Although lipoproteins have been considered as effective drug delivery agents, none of these nanoformulations has entered clinical trials to date. A major challenge to advancing lipoprotein-based formulations to the clinic has been the availability of a cost-effective protein or peptide constituent, needed for the assembly of the drug/lipoprotein nanocomplexes. This report of a robust, spontaneously assembling drug transport system from a single component could provide the template for a superior, targeted drug delivery strategy for therapeutics of cancer and other diseases (Counsell and Pohland, 1982).
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Affiliation(s)
- Sangram Raut
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Ashwini Garud
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Bhavani Nagarajan
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Nirupama Sabnis
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Alan Remaley
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Rafal Fudala
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Ignacy Gryczynski
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Zygmunt Gryczynski
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Sergei V Dzyuba
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Julian Borejdo
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
| | - Andras Lacko
- Departments of Physiology and Anatomy (S.R., A.G., B.N., N.S., A.L.) and Microbiology, Immunology and Genetics (R.F., I.G., Z.G., J.B.), UNT Health Science Center, Fort Worth, Texas; National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland (A.R.); and Departments of Physics and Astronomy (Z.G.) and Chemistry and Biochemistry (S.V.D.), Texas Christian University, Fort Worth, Texas
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Tempelhagen L, Ayer A, Culham DE, Stocker R, Wood JM. Cultivation at high osmotic pressure confers ubiquinone 8–independent protection of respiration on Escherichia coli. J Biol Chem 2020. [DOI: 10.1016/s0021-9258(17)49909-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Tempelhagen L, Ayer A, Culham DE, Stocker R, Wood JM. Cultivation at high osmotic pressure confers ubiquinone 8-independent protection of respiration on Escherichia coli. J Biol Chem 2019; 295:981-993. [PMID: 31826918 DOI: 10.1074/jbc.ra119.011549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/11/2019] [Indexed: 11/06/2022] Open
Abstract
Ubiquinone 8 (coenzyme Q8 or Q8) mediates electron transfer within the aerobic respiratory chain, mitigates oxidative stress, and contributes to gene expression in Escherichia coli In addition, Q8 was proposed to confer bacterial osmotolerance by accumulating during growth at high osmotic pressure and altering membrane stability. The osmolyte trehalose and membrane lipid cardiolipin accumulate in E. coli cells cultivated at high osmotic pressure. Here, Q8 deficiency impaired E. coli growth at low osmotic pressure and rendered growth osmotically sensitive. The Q8 deficiency impeded cellular O2 uptake and also inhibited the activities of two proton symporters, the osmosensing transporter ProP and the lactose transporter LacY. Q8 supplementation decreased membrane fluidity in liposomes, but did not affect ProP activity in proteoliposomes, which is respiration-independent. Liposomes and proteoliposomes prepared with E. coli lipids were used for these experiments. Similar oxygen uptake rates were observed for bacteria cultivated at low and high osmotic pressures. In contrast, respiration was dramatically inhibited when bacteria grown at the same low osmotic pressure were shifted to high osmotic pressure. Thus, respiration was restored during prolonged growth of E. coli at high osmotic pressure. Of note, bacteria cultivated at low and high osmotic pressures had similar Q8 concentrations. The protection of respiration was neither diminished by cardiolipin deficiency nor conferred by trehalose overproduction during growth at low osmotic pressure, but rather might be achieved by Q8-independent respiratory chain remodeling. We conclude that osmotolerance is conferred through Q8-independent protection of respiration, not by altering physical properties of the membrane.
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Affiliation(s)
- Laura Tempelhagen
- Department of Molecular and Cellular Biology, University of Guelph, 488 Gordon Street, Guelph, Ontario N1G 2W1, Canada
| | - Anita Ayer
- Vascular Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales 2010, Australia.,St. Vincent's Clinical School, University of New South Wales Medicine, Kensington, New South Wales 2050, Australia
| | - Doreen E Culham
- Department of Molecular and Cellular Biology, University of Guelph, 488 Gordon Street, Guelph, Ontario N1G 2W1, Canada
| | - Roland Stocker
- Vascular Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales 2010, Australia.,St. Vincent's Clinical School, University of New South Wales Medicine, Kensington, New South Wales 2050, Australia
| | - Janet M Wood
- Department of Molecular and Cellular Biology, University of Guelph, 488 Gordon Street, Guelph, Ontario N1G 2W1, Canada
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Ferrihydrite nanoparticles interaction with model lipid membranes. Chem Phys Lipids 2019; 226:104851. [PMID: 31836519 DOI: 10.1016/j.chemphyslip.2019.104851] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/25/2019] [Accepted: 12/04/2019] [Indexed: 11/24/2022]
Abstract
In recent years was observed an increased interest towards the use of metal nanoparticles for various biomedical applications, such as therapeutics, delivery systems or imaging. As biological membranes are the first structures with which the nanoparticles interact, it is necessary to understand better the mechanisms governing these interactions. In the present paper we aim to characterize the effect of three different ferrihydrite nanoparticles (simple or doped with cooper or cobalt) on the fluidity of model lipid membranes. First we evaluated the physicochemical properties of the nanoparticles: size and composition. Secondly, their effect on lipid membranes was also evaluated using Laurdan, TMA-DPH and DPH fluorescence. Our results can help better understand the mechanisms involved in nanoparticles and membrane interactions.
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Magnetoliposomes Containing Calcium Ferrite Nanoparticles for Applications in Breast Cancer Therapy. Pharmaceutics 2019; 11:pharmaceutics11090477. [PMID: 31540088 PMCID: PMC6781553 DOI: 10.3390/pharmaceutics11090477] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 09/09/2019] [Accepted: 09/11/2019] [Indexed: 01/06/2023] Open
Abstract
Magnetoliposomes containing calcium ferrite (CaFe2O4) nanoparticles were developed and characterized for the first time. CaFe2O4 nanoparticles were covered by a lipid bilayer or entrapped in liposomes forming, respectively, solid or aqueous magnetoliposomes as nanocarriers for new antitumor drugs. The magnetic nanoparticles were characterized by UV/Visible absorption, XRD, HR-TEM, and SQUID, exhibiting sizes of 5.2 ± 1.2 nm (from TEM) and a superparamagnetic behavior. The magnetoliposomes were characterized by DLS and TEM. The incorporation of two new potential antitumor drugs (thienopyridine derivatives) specifically active against breast cancer in these nanosystems was investigated by fluorescence emission and anisotropy. Aqueous magnetoliposomes, with hydrodynamic diameters around 130 nm, and solid magnetoliposomes with sizes of ca. 170 nm, interact with biomembranes by fusion and are able to transport the antitumor drugs with generally high encapsulation efficiencies (70%). These fully biocompatible drug-loaded magnetoliposomes can be promising as therapeutic agents in future applications of combined breast cancer therapy.
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Garg S, Liu Y, Perez-Salas U, Porcar L, Butler PD. Anomalous inter-membrane cholesterol transport in fluid phase phosphoserine vesicles driven by headgroup ordered to disordered entropic transition. Chem Phys Lipids 2019; 223:104779. [PMID: 31153912 PMCID: PMC11132670 DOI: 10.1016/j.chemphyslip.2019.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 05/20/2019] [Indexed: 10/26/2022]
Abstract
POPS is highly enriched in the inner leaflet of the plasma membrane. Here we present measurements of inter-membrane cholesterol transport rates in POPS vesicles. We find that the cholesterol transport kinetics are not only an order of magnitude slower than in POPC lipids at near physiological temperatures, they exhibit a surprising discontinuous Arrhenius behavior around 48 °C. Moreover, thermodynamic analysis suggests that for biologically relevant temperatures, below the discontinuity, the exchange of cholesterol is entropically dominated while it is enthalpically driven, as is the case in POPC vesicles, above that discontinuity. Using the polar fluorescent probe Laurdan we found that POPS fluid membranes retain a large degree of order in the headgroup region for temperatures below the discontinuity but undergo an order-to-disorder transition in the region coinciding with the discontinuity in the transport of cholesterol in POPS membranes providing an explanation not only for the discontinuity but for the entropic dominance at physiological temperatures.
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Affiliation(s)
- Sumit Garg
- Physics Department, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Yangmingyue Liu
- Physics Department, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Ursula Perez-Salas
- Physics Department, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Lionel Porcar
- Institut Laue Langevin, 71 Avenue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Paul D Butler
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899-6102, USA
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Hydrophilic Silver Nanoparticles Loaded into Niosomes: Physical-Chemical Characterization in View of Biological Applications. NANOMATERIALS 2019; 9:nano9081177. [PMID: 31426465 PMCID: PMC6724070 DOI: 10.3390/nano9081177] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/02/2019] [Accepted: 08/15/2019] [Indexed: 12/11/2022]
Abstract
Silver nanoparticles (AgNPs) are widely used as antibacterial agents and anticancer drugs, but often their low stability limits their mass production and broad applications. The use of niosomes as a carrier to protect and envelop AgNPs gives a new perspective to solve these problems. In this study, AgNPs were functionalized with sodium 3-mercapto-1-propanesulfonate (3MPS) to induce hydrophilic behavior, improving loading in Tween 20 and Span 20 niosomes (NioTw20 and NioSp20, respectively). Entrapment efficiency was evaluated by UV analyses and is around 1–4%. Dimensions were investigated by means of dynamic light scattering (DLS) (<2RH> = 140 ± 4 nm and <2RH> = 251 ± 1 nm respectively for NioTw20 + AgNPs and NioSp20 + AgNPs) and were compared with those by atomic force microscopy (AFM) and small angle X ray scattering (SAXS) analyses. Stability was assessed in water up to 90 days, and both in bovine serum and human serum for up to 8 h. In order to characterize the local structure of niosomes, SAXS measurements have been performed on Tween 20 and Span 20 empty niosomes and loaded with AgNPs. The release profiles of hydrophilic probe calcein and lipophilic probe Nile Red were performed in HEPES buffer and in human serum. All these features contribute to conclude that the two systems, NioTw20 + AgNPs and NioSp20 + AgNPs, are suitable and promising in the field of biological applications.
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Romoli O, Mukherjee S, Mohid SA, Dutta A, Montali A, Franzolin E, Brady D, Zito F, Bergantino E, Rampazzo C, Tettamanti G, Bhunia A, Sandrelli F. Enhanced Silkworm Cecropin B Antimicrobial Activity against Pseudomonas aeruginosa from Single Amino Acid Variation. ACS Infect Dis 2019; 5:1200-1213. [PMID: 31045339 DOI: 10.1021/acsinfecdis.9b00042] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Pseudomonas aeruginosa is an opportunistic bacterial pathogen causing severe infections in hospitalized and immunosuppressed patients, particularly individuals affected by cystic fibrosis. Several clinically isolated P. aeruginosa strains were found to be resistant to three or more antimicrobial classes indicating the importance of identifying new antimicrobials active against this pathogen. Here, we characterized the antimicrobial activity and the action mechanisms against P. aeruginosa of two natural isoforms of the antimicrobial peptide cecropin B, both isolated from the silkworm Bombyx mori. These cecropin B isoforms differ in a single amino acid substitution within the active portion of the peptide, so that the glutamic acid of the E53 CecB variant is replaced by a glutamine in the Q53 CecB isoform. Both peptides showed a high antimicrobial and membranolytic activity against P. aeruginosa, with Q53 CecB displaying greater activity compared with the E53 CecB isoform. Biophysical analyses, live-cell NMR, and molecular-dynamic-simulation studies indicated that both peptides might act as membrane-interacting elements, which can disrupt outer-membrane organization, facilitating their translocation toward the inner membrane of the bacterial cell. Our data also suggest that the amino acid variation of the Q53 CecB isoform represents a critical factor in stabilizing the hydrophobic segment that interacts with the bacterial membrane, determining the highest antimicrobial activity of the whole peptide. Its high stability to pH and temperature variations, tolerance to high salt concentrations, and low toxicity against human cells make Q53 CecB a promising candidate in the development of CecB-derived compounds against P. aeruginosa.
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Affiliation(s)
- Ottavia Romoli
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Shruti Mukherjee
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), 700 054 Kolkata, India
| | - Sk Abdul Mohid
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), 700 054 Kolkata, India
| | - Arkajyoti Dutta
- Department of Chemistry, Bose Institute, 93/1 A P C Road, 700 009 Kolkata, India
| | - Aurora Montali
- Department of Biotechnology and Life Sciences, University of Insubria, Via Jean Henry Dunant, 3, 21100 Varese, Italy
| | - Elisa Franzolin
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Daniel Brady
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Francesca Zito
- Laboratoire de Biologie Physico-Chimique des Protéines Membranaires, Institut de Biologie Physico-Chimique, CNRS, UMR7099, University Paris Diderot, Sorbonne Paris Cité, Paris Sciences et Lettres Research University, F-75005 Paris, France
| | - Elisabetta Bergantino
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Chiara Rampazzo
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Gianluca Tettamanti
- Department of Biotechnology and Life Sciences, University of Insubria, Via Jean Henry Dunant, 3, 21100 Varese, Italy
| | - Anirban Bhunia
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), 700 054 Kolkata, India
| | - Federica Sandrelli
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
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Measuring the Impact of Bile Acids on the Membrane Order of Primary Hepatocytes and Isolated Mitochondria by Fluorescence Imaging and Spectroscopy. Methods Mol Biol 2019; 1981:99-115. [PMID: 31016650 DOI: 10.1007/978-1-4939-9420-5_7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Cholestasis is characterized by impaired secretion of bile flow that can result in the accumulation of highly abnormal levels of bile acids causing hepatocyte and biliary injury. As amphipathic molecules, bile acids can intercalate in lipid membranes, and pathophysiologic concentrations of bile acids have the potential to induce marked changes in the biophysical properties of biomembranes, including membrane ordering. These effects, particularly on the mitochondrial and plasma membranes, have been proposed to trigger toxicity of bile acids. This chapter details different fluorescence-based methods (fluorescence polarization, and spectroscopy/imaging of solvatochromic dyes) to evaluate the impact of different bile acids on membrane order. Protocols are described for the application of these methods to biomimetic vesicles, isolated mitochondria, and hepatocytes, following a bottom-up approach.
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47
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Lebecque S, Lins L, Dayan FE, Fauconnier ML, Deleu M. Interactions Between Natural Herbicides and Lipid Bilayers Mimicking the Plant Plasma Membrane. FRONTIERS IN PLANT SCIENCE 2019; 10:329. [PMID: 30936889 PMCID: PMC6431664 DOI: 10.3389/fpls.2019.00329] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 02/28/2019] [Indexed: 05/06/2023]
Abstract
Natural phytotoxic compounds could become an alternative to traditional herbicides in the framework of sustainable agriculture. Nonanoic acid, sarmentine and sorgoleone are such molecules extracted from plants and able to inhibit the growth of various plant species. However, their mode of action is not fully understood and despite clues indicating that they could affect the plant plasma membrane, molecular details of such phenomenon are lacking. In this paper, we investigate the interactions between those natural herbicides and artificial bilayers mimicking the plant plasma membrane. First, their ability to affect lipid order and fluidity is evaluated by means of fluorescence measurements. It appears that sorgoleone has a clear ordering effect on lipid bilayers, while nonanoic acid and sarmentine induce no or little change to these parameters. Then, a thermodynamic characterization of interactions of each compound with lipid vesicles is obtained with isothermal titration calorimetry, and their respective affinity for bilayers is found to be ranked as follows: sorgoleone > sarmentine > nonanoic acid. Finally, molecular dynamics simulations give molecular details about the location of each compound within a lipid bilayer and confirm the rigidifying effect of sorgoleone. Data also suggest that mismatch in alkyl chain length between nonanoic acid or sarmentine and lipid hydrophobic tails could be responsible for bilayer destabilization. Results are discussed regarding their implications for the phytotoxicity of these compounds.
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Affiliation(s)
- Simon Lebecque
- TERRA, Laboratory of Molecular Biophysics at Interfaces, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
- TERRA – AgricultureIsLife, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
| | - Laurence Lins
- TERRA, Laboratory of Molecular Biophysics at Interfaces, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
| | - Franck E. Dayan
- Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, CO, United States
| | - Marie-Laure Fauconnier
- General and Organic Chemistry Laboratory, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
| | - Magali Deleu
- TERRA, Laboratory of Molecular Biophysics at Interfaces, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
- *Correspondence: Magali Deleu,
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48
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Salazar PB, Dupuy FG, de Athayde Moncorvo Collado A, Minahk CJ. Membrane order and ionic strength modulation of the inhibition of the membrane-bound acetylcholinesterase by epigallocatechin‑3‑gallate. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:170-177. [DOI: 10.1016/j.bbamem.2018.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 08/01/2018] [Accepted: 08/09/2018] [Indexed: 10/28/2022]
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49
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Rinaldi F, Hanieh PN, Del Favero E, Rondelli V, Brocca P, Pereira MC, Andreev OA, Reshetnyak YK, Marianecci C, Carafa M. Decoration of Nanovesicles with pH (Low) Insertion Peptide (pHLIP) for Targeted Delivery. NANOSCALE RESEARCH LETTERS 2018; 13:391. [PMID: 30515583 PMCID: PMC6279677 DOI: 10.1186/s11671-018-2807-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
Acidity at surface of cancer cells is a hallmark of tumor microenvironments, which does not depend on tumor perfusion, thus it may serve as a general biomarker for targeting tumor cells. We used the pH (low) insertion peptide (pHLIP) for decoration of liposomes and niosomes. pHLIP senses pH at the surface of cancer cells and inserts into the membrane of targeted cells, and brings nanomaterial to close proximity of cellular membrane. DMPC liposomes and Tween 20 or Span 20 niosomes with and without pHLIP in their coating were fully characterized in order to obtain fundamental understanding on nanocarrier features and facilitate the rational design of acidity sensitive nanovectors. The samples stability over time and in presence of serum was demonstrated. The size, ζ-potential, and morphology of nanovectors, as well as their ability to entrap a hydrophilic probe and modulate its release were investigated. pHLIP decorated vesicles could be useful to obtain a prolonged (modified) release of biological active substances for targeting tumors and other acidic diseased tissues.
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Affiliation(s)
- Federica Rinaldi
- Center for Life Nano Science@Sapienza, Fondazione Istituto Italiano di Tecnologia, Viale Regina Elena, 291, 00161 Rome, Italy
| | - Patrizia N. Hanieh
- Department of Drug Chemistry and Technology, University of Rome “Sapienza”, P.le A. Moro, 5, 00185 Rome, Italy
| | - Elena Del Favero
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, LITA, Via F.lli Cervi 93, 20090 Segrate, Italy
| | - Valeria Rondelli
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, LITA, Via F.lli Cervi 93, 20090 Segrate, Italy
| | - Paola Brocca
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, LITA, Via F.lli Cervi 93, 20090 Segrate, Italy
| | - Mohan C. Pereira
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI 02811 USA
| | - Oleg A. Andreev
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI 02811 USA
| | - Yana K. Reshetnyak
- Physics Department, University of Rhode Island, 2 Lippitt Rd, Kingston, RI 02811 USA
| | - Carlotta Marianecci
- Department of Drug Chemistry and Technology, University of Rome “Sapienza”, P.le A. Moro, 5, 00185 Rome, Italy
| | - Maria Carafa
- Department of Drug Chemistry and Technology, University of Rome “Sapienza”, P.le A. Moro, 5, 00185 Rome, Italy
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50
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Culham DE, Marom D, Boutin R, Garner J, Ozturk TN, Sahtout N, Tempelhagen L, Lamoureux G, Wood JM. Dual Role of the C-Terminal Domain in Osmosensing by Bacterial Osmolyte Transporter ProP. Biophys J 2018; 115:2152-2166. [PMID: 30448037 PMCID: PMC6289098 DOI: 10.1016/j.bpj.2018.10.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/22/2018] [Accepted: 10/29/2018] [Indexed: 11/23/2022] Open
Abstract
ProP is a member of the major facilitator superfamily, a proton-osmolyte symporter, and an osmosensing transporter. ProP proteins share extended cytoplasmic carboxyl terminal domains (CTDs) implicated in osmosensing. The CTDs of the best characterized, group A ProP orthologs, terminate in sequences that form intermolecular, antiparallel α-helical coiled coils (e.g., ProPEc, from Escherichia coli). Group B orthologs lack that feature (e.g., ProPXc, from Xanthomonas campestris). ProPXc was expressed and characterized in E. coli to further elucidate the role of the coiled coil in osmosensing. The activity of ProPXc was a sigmoid function of the osmolality in cells and proteoliposomes. ProPEc and ProPXc attained similar activities at the same expression level in E. coli. ProPEc transports proline and glycine betaine with comparable high affinities at low osmolality. In contrast, proline weakly inhibited high-affinity glycine-betaine uptake via ProPXc. The KM for proline uptake via ProPEc increases dramatically with the osmolality. The KM for glycine-betaine uptake via ProPXc did not. Thus, ProPXc is an osmosensing transporter, and the C-terminal coiled coil is not essential for osmosensing. The role of CTD-membrane interaction in osmosensing was examined further. As for ProPEc, the ProPXc CTD co-sedimented with liposomes comprising E. coli phospholipid. Molecular dynamics simulations illustrated association of the monomeric ProPEc CTD with the membrane surface. Comparison with the available NMR structure for the homodimeric coiled coil formed by the ProPEc-CTD suggested that membrane association and homodimeric coiled-coil formation by that peptide are mutually exclusive. The membrane fluidity in liposomes comprising E. coli phospholipid decreased with increasing osmolality in the range relevant for ProP activation. These data support the proposal that ProP activates as cellular dehydration increases cytoplasmic cation concentration, releasing the CTD from the membrane surface. For group A orthologs, this also favors α-helical coiled-coil formation that stabilizes the transporter in an active form.
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Affiliation(s)
- Doreen E Culham
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - David Marom
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - Rebecca Boutin
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - Jennifer Garner
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada; Centre for Research in Molecular Modeling, Concordia University, Montréal, Québec, Canada
| | - Tugba Nur Ozturk
- Centre for Research in Molecular Modeling, Concordia University, Montréal, Québec, Canada; Department of Physics, Concordia University, Montréal, Québec, Canada
| | - Naheda Sahtout
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - Laura Tempelhagen
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - Guillaume Lamoureux
- Centre for Research in Molecular Modeling, Concordia University, Montréal, Québec, Canada; Department of Physics, Concordia University, Montréal, Québec, Canada; Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada
| | - Janet M Wood
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada.
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