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Ruiz-Robles MA, Solís-Pomar FJ, Travieso Aguilar G, Márquez Mijares M, Garrido Arteaga R, Martínez Armenteros O, Gutiérrez-Lazos CD, Pérez-Tijerina EG, Fundora Cruz A. Physico-Chemical Properties of CdTe/Glutathione Quantum Dots Obtained by Microwave Irradiation for Use in Monoclonal Antibody and Biomarker Testing. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:684. [PMID: 38668178 PMCID: PMC11054025 DOI: 10.3390/nano14080684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/03/2024] [Accepted: 04/10/2024] [Indexed: 04/29/2024]
Abstract
In this report, we present the results on the physicochemical characterization of cadmium telluride quantum dots (QDs) stabilized with glutathione and prepared by optimizing the synthesis conditions. An excellent control of emissions and the composition of the nanocrystal surface for its potential application in monoclonal antibody and biomarker testing was achieved. Two samples (QDYellow, QDOrange, corresponding to their emission colors) were analyzed by dynamic light scattering (DLS), and their hydrodynamic sizes were 6.7 nm and 19.4 nm, respectively. Optical characterization by UV-vis absorbance spectroscopy showed excitonic peaks at 517 nm and 554 nm. Photoluminescence spectroscopy indicated that the samples have a maximum intensity emission at 570 and 606 nm, respectively, within the visible range from yellow to orange. Infrared spectroscopy showed vibrational modes corresponding to the functional groups OH-C-H, C-N, C=C, C-O, C-OH, and COOH, which allows for the formation of functionalized QDs for the manufacture of biomarkers. In addition, the hydrodynamic radius, zeta potential, and approximate molecular weight were determined by dynamic light scattering (DLS), electrophoretic light scattering (ELS), and static light scattering (SLS) techniques. Size dispersion and the structure of nanoparticles was obtained by Transmission Electron Microscopy (TEM) and by X-ray diffraction. In the same way, we calculated the concentration of Cd2+ ions expressed in mg/L by using the Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-OES). In addition to the characterization of the nanoparticles, the labeling of murine myeloid cells was carried out with both samples of quantum dots, where it was demonstrated that quantum dots can diffuse into these cells and connect mostly with the cell nucleus.
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Affiliation(s)
- M. A. Ruiz-Robles
- Centro de Investigación en Ciencias Físico Matemáticas, Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Nuevo León, Av. Universidad s/n, San Nicolás de Los Garza 66455, Nuevo León, Mexico; (M.A.R.-R.); (C.D.G.-L.); (E.G.P.-T.)
| | - Francisco J. Solís-Pomar
- Centro de Investigación en Ciencias Físico Matemáticas, Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Nuevo León, Av. Universidad s/n, San Nicolás de Los Garza 66455, Nuevo León, Mexico; (M.A.R.-R.); (C.D.G.-L.); (E.G.P.-T.)
| | - Gabriela Travieso Aguilar
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, La Habana 10400, Cuba;
| | - Maykel Márquez Mijares
- Instituto Superior de Ciencias y Tecnologías Aplicadas (InSTEC), Universidad de La Habana, La Habana 10400, Cuba; (M.M.M.); (A.F.C.)
| | - Raine Garrido Arteaga
- Grupo de Análisis, Instituto Finlay de Vacunas, Avenida 21 No. 19810, Atabey, Playa, La Habana 10400, Cuba; (R.G.A.); (O.M.A.)
| | - Olivia Martínez Armenteros
- Grupo de Análisis, Instituto Finlay de Vacunas, Avenida 21 No. 19810, Atabey, Playa, La Habana 10400, Cuba; (R.G.A.); (O.M.A.)
| | - C. D. Gutiérrez-Lazos
- Centro de Investigación en Ciencias Físico Matemáticas, Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Nuevo León, Av. Universidad s/n, San Nicolás de Los Garza 66455, Nuevo León, Mexico; (M.A.R.-R.); (C.D.G.-L.); (E.G.P.-T.)
| | - Eduardo G. Pérez-Tijerina
- Centro de Investigación en Ciencias Físico Matemáticas, Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Nuevo León, Av. Universidad s/n, San Nicolás de Los Garza 66455, Nuevo León, Mexico; (M.A.R.-R.); (C.D.G.-L.); (E.G.P.-T.)
| | - Abel Fundora Cruz
- Instituto Superior de Ciencias y Tecnologías Aplicadas (InSTEC), Universidad de La Habana, La Habana 10400, Cuba; (M.M.M.); (A.F.C.)
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Holman R, Guillemin PC, Lorton O, Desgranges S, Contino-Pépin C, Salomir R. Assessing Enhanced Acoustic Absorption From Sonosensitive Perfluorocarbon Emulsion With Magnetic Resonance-Guided High-Intensity Focused Ultrasound and a Percolated Tissue-Mimicking Flow Phantom. ULTRASOUND IN MEDICINE & BIOLOGY 2023; 49:1510-1517. [PMID: 37117139 DOI: 10.1016/j.ultrasmedbio.2023.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 01/18/2023] [Accepted: 01/25/2023] [Indexed: 05/17/2023]
Abstract
OBJECTIVE Sonosensitive high-boiling point perfluorocarbon F8TAC18-PFOB emulsions previously exhibited thermal enhancement during focused ultrasound heating in ex vivo pig livers, kidneys and a laminar flow phantom. The main objectives of this study were to evaluate heating under turbulent conditions, observe perfusion effects, quantify heating in terms of acoustic absorption and model the experimental data. METHODS In this study, similar perfluorocarbon emulsions were circulated at incremental concentrations of 0.07, 0.13, 0.19 and 0.25% v:v through a percolated turbulent flow phantom, more representative of the biological tissue than a laminar flow phantom. The concentrations represent the droplet content in only the perfused fluid, rather than the droplet concentration throughout the entire cross-section. The temperature was measured with magnetic resonance thermometry, during focused ultrasound sonications of 67 W, 95% duty cycle and 33 s duration. These were used in Bioheat equation simulations to investigate in silico the thermal phenomena. The temperature change was compared with the control condition by circulating de-gassed and de-ionized water through the flow phantom without droplets. RESULTS With these 1.24 µm diameter droplets at 0.25% v:v, the acoustic absorption coefficient increased from 0.93 ± 0.05 at 0.0% v:v to 1.82 ± 0.22 m-1 at 0.25% v:v using a 0.1 mL s-1 flow rate. Without perfusion at 0.25% v:v, an increase was observed from 1.23 ± 0.07 m-1 at 0.0% v:v to 1.65 ± 0.17 m-1. CONCLUSION The results further support previously reported thermal enhancement with F8TAC18-PFOB emulsion, quantified the increased absorption at small concentration intervals, illustrated that the effects can be observed in a variety of visceral tissue models and provided a method to simulate untested scenarios.
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Affiliation(s)
- Ryan Holman
- Image Guided Interventions Laboratory, Department of Radiology, University of Geneva, Geneva, Switzerland.
| | - Pauline C Guillemin
- Image Guided Interventions Laboratory, Department of Radiology, University of Geneva, Geneva, Switzerland
| | - Orane Lorton
- Image Guided Interventions Laboratory, Department of Radiology, University of Geneva, Geneva, Switzerland
| | - Stéphane Desgranges
- Equipe Systèmes Amphiphiles bioactifs et Formulations Eco-compatibles, Unité Propre de Recherche et d'Innovation (UPRI), Avignon University, Avignon, France
| | - Christiane Contino-Pépin
- Equipe Systèmes Amphiphiles bioactifs et Formulations Eco-compatibles, Unité Propre de Recherche et d'Innovation (UPRI), Avignon University, Avignon, France
| | - Rares Salomir
- Image Guided Interventions Laboratory, Department of Radiology, University of Geneva, Geneva, Switzerland; Radiology Division, University Hospitals of Geneva, Geneva, Switzerland
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Spatarelu CP, Jandhyala S, Luke GP. Dual-drug loaded ultrasound-responsive nanodroplets for on-demand combination chemotherapy. ULTRASONICS 2023; 133:107056. [PMID: 37269682 DOI: 10.1016/j.ultras.2023.107056] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 05/13/2023] [Accepted: 05/23/2023] [Indexed: 06/05/2023]
Abstract
Phase-changing nanodroplets are nanometric sized constructs that can be vaporized via external stimuli, such as focused ultrasound, to generate gaseous bubbles that are visible in ultrasound. Their activation can also be leveraged to release their payload, creating a method for ultrasound-modulated localized drug delivery. Here, we develop a perfluoropentane core nanodroplet that can simultaneously load paclitaxel and doxorubicin, and release them in response to an acoustic trigger. A double emulsion method is used to incorporate the two drugs with different physio-chemical properties, which allows for a combinatorial chemotherapy regimen to be used. Their loading, release, and biological effects on a triple negative breast cancer mouse model are investigated. We show that activation enhances the drug-delivery effect and delays the tumor growth rate in vivo. Overall, the phase-changing nanodroplets are a useful platform to allow on-demand delivery of combinations of drugs.
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Affiliation(s)
- Catalina-Paula Spatarelu
- Thayer School of Engineering, Dartmouth College, 15 Thayer Drive, Hanover, NH 03755, United States
| | - Sidhartha Jandhyala
- Thayer School of Engineering, Dartmouth College, 15 Thayer Drive, Hanover, NH 03755, United States
| | - Geoffrey P Luke
- Thayer School of Engineering, Dartmouth College, 15 Thayer Drive, Hanover, NH 03755, United States; Translational Engineering in Cancer Research Program, Dartmouth Cancer Center, 1 Medical Center Drive, Lebanon, NH 03766, United States.
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Perfluorocarbon Nanodroplets as Potential Nanocarriers for Brain Delivery Assisted by Focused Ultrasound-Mediated Blood–Brain Barrier Disruption. Pharmaceutics 2022; 14:pharmaceutics14071498. [PMID: 35890391 PMCID: PMC9323719 DOI: 10.3390/pharmaceutics14071498] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/08/2022] [Accepted: 07/13/2022] [Indexed: 12/10/2022] Open
Abstract
The management of brain diseases remains a challenge, particularly because of the difficulty for drugs to cross the blood–brain barrier. Among strategies developed to improve drug delivery, nano-sized emulsions (i.e., nanoemulsions), employed as nanocarriers, have been described. Moreover, focused ultrasound-mediated blood–brain barrier disruption using microbubbles is an attractive method to overcome this barrier, showing promising results in clinical trials. Therefore, nanoemulsions combined with this technology represent a real opportunity to bypass the constraints imposed by the blood–brain barrier and improve the treatment of brain diseases. In this work, a stable freeze-dried emulsion of perfluorooctyl bromide nanodroplets stabilized with home-made fluorinated surfactants able to carry hydrophobic agents is developed. This formulation is biocompatible and droplets composing the emulsion are internalized in multiple cell lines. After intravenous administration in mice, droplets are eliminated from the bloodstream in 24 h (blood half-life (t1/2) = 3.11 h) and no long-term toxicity is expected since they are completely excreted from mice’ bodies after 72 h. In addition, intracerebral accumulation of tagged droplets is safely and significantly increased after focused ultrasound-mediated blood–brain barrier disruption. Thus, the proposed nanoemulsion appears as a promising nanocarrier for a successful focused ultrasound-mediated brain delivery of hydrophobic agents.
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Holman R, Gui L, Lorton O, Guillemin P, Desgranges S, Contino-Pépin C, Salomir R. PFOB sonosensitive microdroplets: determining their interaction radii with focused ultrasound using MR thermometry and a Gaussian convolution kernel computation. Int J Hyperthermia 2022; 39:108-119. [PMID: 35000497 DOI: 10.1080/02656736.2021.2021304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Purpose: Micron-sized perfluorocarbon droplet adjuvants to focused ultrasound therapies allow lower applied power, circumvent unwanted prefocal heating, and enhance thermal dose in highly perfused tissues. The heat enhancement has been shown to saturate at increasing concentrations. Experiments were performed to empirically model the saturating heating effects during focused ultrasound.Materials and methods: The measurements were made at varying concentrations using magnetic resonance thermometry and focused ultrasound by circulating droplets of mean diameter 1.9 to 2.3 µm through a perfused phantom. A simulation was performed to estimate the interaction radius size, empirically.Results: The interaction radius, representing the radius of a sphere encompassing 90% of the probability for the transformation of acoustic energy into heat deposition around a single droplet, was determined experimentally from ultrasonic absorption coefficient measurements The simulations suggest the interaction radius was approximately 12.5-fold larger than the geometrical radius of droplets, corresponding to an interaction volume on the order of 2000 larger than the geometrical volume.Conclusions: The results provide information regarding the dose-response relationship from the droplets, a measure with 15% precision of their interaction radii with focused ultrasound, and subsequent insights into the underlying physical heating mechanism.
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Affiliation(s)
- Ryan Holman
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Laura Gui
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Orane Lorton
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Pauline Guillemin
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | | | | | - Rares Salomir
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Radiology Division, University Hospitals of Geneva, Geneva, Switzerland
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Holman R, Lorton O, Guillemin PC, Desgranges S, Contino-Pépin C, Salomir R. Perfluorocarbon Emulsion Contrast Agents: A Mini Review. Front Chem 2022; 9:810029. [PMID: 35083198 PMCID: PMC8785234 DOI: 10.3389/fchem.2021.810029] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/09/2021] [Indexed: 12/31/2022] Open
Abstract
Perfluorocarbon emulsions offer a variety of applications in medical imaging. The substances can be useful for most radiological imaging modalities; including, magnetic resonance imaging, ultrasonography, computed tomography, and positron emission tomography. Recently, the substance has gained much interest for theranostics, with both imaging and therapeutic potential. As MRI sequences improve and more widespread access to 19F-MRI coils become available, perfluorocarbon emulsions have great potential for new commercial imaging agents, due to high fluorine content and previous regulatory approval as antihypoxants and blood substitutes. This mini review aims to discuss the chemistry and physics of these contrast agents, in addition to highlighting some of the past, recent, and potential applications.
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Affiliation(s)
- Ryan Holman
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
- *Correspondence: Ryan Holman,
| | - Orane Lorton
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Pauline C. Guillemin
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | | | | | - Rares Salomir
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Radiology Department, University Hospitals of Geneva, Geneva, Switzerland
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Holman R, Lorton O, Guillemin PC, Desgranges S, Santini F, Preso DB, Farhat M, Contino-Pépin C, Salomir R. Perfluorocarbon emulsion enhances MR-ARFI displacement and temperature in vitro: Evaluating the response with MRI, NMR, and hydrophone. Front Oncol 2022; 12:1025481. [PMID: 36713528 PMCID: PMC9880467 DOI: 10.3389/fonc.2022.1025481] [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: 08/22/2022] [Accepted: 11/18/2022] [Indexed: 01/15/2023] Open
Abstract
Sonosensitive perfluorocarbon F8TAC18-PFOB emulsion is under development to enhance heating, increase thermal contrast, and reduce treatment times during focused ultrasound tumor ablation of highly perfused tissue. The emulsion previously showed enhanced heating during ex vivo and in vitro studies. Experiments were designed to observe the response in additional scenarios by varying focused ultrasound conditions, emulsion concentrations, and surfactants. Most notably, changes in acoustic absorption were assessed with MR-ARFI. Phantoms were developed to have thermal, elastic, and relaxometry properties similar to those of ex vivo pig tissue. The phantoms were embedded with varying amounts of F8TAC18-PFOB emulsion or lecithin-PFOB emulsion, between about 0.0-0.3% v:w, in 0.05% v:w increments. MR-ARFI measurements were performed using a FLASH-ARFI-MRT sequence to obtain simultaneous displacement and temperature measurements. A Fabry-Perot hydrophone was utilized to observe the acoustic emissions. Susceptibility-weighted imaging and relaxometry mapping were performed to observe concentration-dependent effects. 19F diffusion-ordered spectroscopy NMR was used to measure the diffusion coefficient of perfluorocarbon droplets in a water emulsion. Increased displacement and temperature were observed with higher emulsion concentration. In semi-rigid MR-ARFI phantoms, a linear response was observed with low-duty cycle MR-ARFI sonications and a mono-exponential saturating response was observed with sustained sonications. The emulsifiers did not have a significant effect on acoustic absorption in semi-rigid gels. Stable cavitation might also contribute to enhanced heating.
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Affiliation(s)
- Ryan Holman
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Orane Lorton
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Pauline C Guillemin
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Stéphane Desgranges
- Avignon Université, Equipe Systèmes Amphiphiles bioactifs et Formulations Eco-compatibles, Unité Propre de Recherche et d'Innovation (UPRI), Avignon, France
| | - Francesco Santini
- Department of Biomedical Engineering, University of Basel, Basel, Switzerland
| | - Davide Bernardo Preso
- Institute of Mechanical Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Mohamed Farhat
- Institute of Mechanical Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Christiane Contino-Pépin
- Avignon Université, Equipe Systèmes Amphiphiles bioactifs et Formulations Eco-compatibles, Unité Propre de Recherche et d'Innovation (UPRI), Avignon, France
| | - Rares Salomir
- Image Guided Interventions Laboratory (GR-949), Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Radiology Department, University Hospitals of Geneva, Geneva, Switzerland
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Liu Y, Chen X, Yu DG, Liu H, Liu Y, Liu P. Electrospun PVP-Core/PHBV-Shell Fibers to Eliminate Tailing Off for an Improved Sustained Release of Curcumin. Mol Pharm 2021; 18:4170-4178. [PMID: 34582196 DOI: 10.1021/acs.molpharmaceut.1c00559] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Tailing off release in the sustained release of water-insoluble curcumin (Cur) is a significant challenge in the drug delivery system. As a novel solution, core-shell nanodrug containers have aroused many interests due to their potential improvement in drug-sustained release. In this work, a biodegradable polymer, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), and hydrophilic polyvinylpyrrolidone (PVP) were exploited as drug delivery carriers by coaxial electrospinning, and the core-shell drug-loaded fibers exhibited improved sustained release of Cur. A cylindrical morphology and a clear core-shell structure were observed by scanning and transmission electron microscopies. The X-ray diffraction pattern and infrared spectroscopy revealed that Cur existed in amorphous form due to its good compatibility with PHBV and PVP. The in vitro drug release curves confirmed that the core-shell container manipulated Cur in a faster drug release process than that in the traditional PHBV monolithic container. The combination of the material and structure forms a novel nanodrug container with a better sustained release of water-insoluble Cur. This strategy is beneficial for exploiting more functional biomedical materials to improve the drug release behavior.
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Affiliation(s)
- Yubo Liu
- School of Materials Science & Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China
| | - Xiaohong Chen
- School of Materials Science & Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China.,Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, China
| | - Deng-Guang Yu
- School of Materials Science & Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China.,Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, China
| | - Hang Liu
- School of Materials Science & Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China
| | - Yuyang Liu
- School of Materials Science & Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China
| | - Ping Liu
- School of Materials Science & Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China.,Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, China
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Le Gal M, Renard E, Simon-Colin C, Larrat B, Langlois V. Amphiphilic and Perfluorinated Poly(3-Hydroxyalkanoate) Nanocapsules for 19F Magnetic Resonance Imaging. Bioengineering (Basel) 2021; 8:bioengineering8090121. [PMID: 34562943 PMCID: PMC8466264 DOI: 10.3390/bioengineering8090121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/27/2021] [Accepted: 09/02/2021] [Indexed: 12/17/2022] Open
Abstract
Nanoparticles have recently emerged as valuable tools in biomedical imaging techniques. Here PEGylated and fluorinated nanocapsules based on poly(3-hydroxyalkanoate) containing a liquid core of perfluorooctyl bromide PFOB were formulated by an emulsion-evaporation process as potential 19F MRI imaging agents. Unsaturated poly(hydroxyalkanoate), PHAU, was produced by marine bacteria using coprah oil and undecenoic acid as substrates. PHA-g-(F; PEG) was prepared by two successive controlled thiol-ene reactions from PHAU with firstly three fluorinated thiols having from 3 up to 17 fluorine atoms and secondly with PEG-SH. The resulting PHA-g-(F; PEG)-based PFOB nanocapsules, with a diameter close to 250–300 nm, are shown to be visible in 19F MRI with an acquisition time of 15 min. The results showed that PFOB-nanocapsules based on PHA-g-(F; PEG) have the potential to be used as novel contrast agents for 19F MRI.
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Affiliation(s)
- Marion Le Gal
- Laboratoire de Microbiologie des Environnements Extrêmes, CNRS, Ifremer, University Brest, F-29280 Plouzané, France; (M.L.G.); (C.S.-C.)
- ICMPE, CNRS, University Paris Est Creteil, F-94010 Creteil, France;
| | - Estelle Renard
- ICMPE, CNRS, University Paris Est Creteil, F-94010 Creteil, France;
| | - Christelle Simon-Colin
- Laboratoire de Microbiologie des Environnements Extrêmes, CNRS, Ifremer, University Brest, F-29280 Plouzané, France; (M.L.G.); (C.S.-C.)
| | - Benoit Larrat
- Université Paris-Saclay, CEA, CNRS, NeuroSpin, 91191 Gif-sur-Yvette, France;
| | - Valérie Langlois
- ICMPE, CNRS, University Paris Est Creteil, F-94010 Creteil, France;
- Correspondence:
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10
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Guo R, Xu N, Liu Y, Ling G, Yu J, Zhang P. Functional ultrasound-triggered phase-shift perfluorocarbon nanodroplets for cancer therapy. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:2064-2079. [PMID: 33992473 DOI: 10.1016/j.ultrasmedbio.2021.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 04/02/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
In recent years, because of their unique properties, the use of perfluorocarbon nanodroplets (PFC NDs) in ultrasound-mediated tumor theranostics has attracted increasing interest. PFC is one of the most stable organic compounds with high hydrophobicity. Phase-shift PFC NDs can be transformed into highly echogenic microbubbles for ultrasound and photoacoustic imaging by ultrasound and laser light. In addition, in the process of acoustic droplet vaporization, PFC NDs with cavitation nuclei can be combined with a variety of ultrasound technologies to produce cavitation effects for tumor ablation, antivascular therapy and release of therapeutic agents loaded in nanodroplets. Moreover, they can also be used to overcome tumor hypoxia by virtue of high oxygen solubility. In this review, first the preparation and stabilization of PFC NDs are summarized and then the issues and outlook are discussed. More importantly, multifunctional platforms based on PFC NDs for cancer diagnostics, therapy and theranostics are reviewed in detail.
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Affiliation(s)
- Ranran Guo
- Shenyang Pharmaceutical University, Shenyang, China
| | - Na Xu
- Shenyang Pharmaceutical University, Shenyang, China
| | - Ying Liu
- Shenyang Pharmaceutical University, Shenyang, China
| | - Guixia Ling
- Shenyang Pharmaceutical University, Shenyang, China
| | - Jia Yu
- Shenyang Pharmaceutical University, Shenyang, China.
| | - Peng Zhang
- Shenyang Pharmaceutical University, Shenyang, China.
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11
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El Hajj F, Fuchs PFJ, Urbach W, Nassereddine M, Hamieh S, Taulier N. Molecular Study of Ultrasound-Triggered Release of Fluorescein from Liposomes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3868-3881. [PMID: 33769822 DOI: 10.1021/acs.langmuir.0c03444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Several investigations have suggested that ultrasound triggers the release of drugs encapsulated into liposomes at acoustic pressures low enough to avoid cavitation or high hyperthermia. However, the mechanism leading to this triggered release as well as the adequate composition of the liposome membrane remains unknown. Here, we investigate the ultrasound-triggered release of fluorescein disodium salt encapsulated into liposomes made of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) or 1,2-distearoylphosphatidyl-ethanolamine (DSPC) lipids with various concentrations of cholesterol (from 0 to 44 mol %). The passive release of encapsulated fluorescein was first characterized. It was observed to be higher when the membrane is in a fluid phase and increased with temperature but decreased upon addition of cholesterol. Next, the release of fluorescein was measured at different acoustic frequencies (0.8, 1.1, and 3.3 MHz) and peak-to-peak pressures (0, 2, 2.5, 5, and 8 MPa). Measurements were performed at temperatures where DOPC and DSPC liposomes were, respectively, in the fluid or gel phase. We found that the release rate did not depend on the ultrasound frequency. For DOPC liposomes, the ultrasound-triggered release of fluorescein decreased with increasing concentration of cholesterol in liposomes, while the behavior was more complex for DSPC liposomes. Overall, the triggered release from DSPC liposomes was up to ten times less than DOPC liposomes. Molecular dynamics simulations performed on a pure DOPC membrane showed that a membrane experiences, under a directional pressure of ±2.4 MPa, various changes in properties such as the area per lipid (APL). An increase in the APL was notably observed when the simulation box was laterally stretched or perpendicularly compressed, which was accompanied by an increase in the number of water molecules crossing the membrane. This suggests that ultrasound most probably enhances the diffusion of encapsulated molecules at small acoustic pressures by increasing the distance between lipids.
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Affiliation(s)
- Fatima El Hajj
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, F-75006 Paris, France
- Faculté des Sciences, Université Libanaise, Hadath 1003, Liban
| | - Patrick F J Fuchs
- Université de Paris, UFR Sciences du Vivant, F-75013 Paris, France
- Sorbonne Université, Ecole Normale Supérieure, PSL Research University, CNRS, Laboratoire des Biomolécules (LBM), F-75005 Paris, France
| | - Wladimir Urbach
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, F-75005 Paris, France
| | | | - Salah Hamieh
- Faculté des Sciences, Université Libanaise, Hadath 1003, Liban
| | - Nicolas Taulier
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, F-75006 Paris, France
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Ruan JL, Browning RJ, Yildiz YO, Gray M, Bau L, Kamila S, Thompson J, Elliott A, Smart S, McHale AP, Callan JF, Vojnovic B, Stride E, Kiltie AE. Ultrasound-Mediated Gemcitabine Delivery Reduces the Normal-Tissue Toxicity of Chemoradiation Therapy in a Muscle-Invasive Bladder Cancer Model. Int J Radiat Oncol Biol Phys 2021; 109:1472-1482. [PMID: 33714528 PMCID: PMC7955285 DOI: 10.1016/j.ijrobp.2020.11.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/03/2020] [Accepted: 11/03/2020] [Indexed: 12/19/2022]
Abstract
PURPOSE Chemoradiation therapy is the standard of care in muscle-invasive bladder cancer (MIBC). Although agents such as gemcitabine can enhance tumor radiosensitivity, their side effects can limit patient eligibility and treatment efficacy. This study investigates ultrasound and microbubbles for targeting gemcitabine delivery to reduce normal-tissue toxicity in a murine orthotopic MIBC model. MATERIALS AND METHODS CD1-nude mice were injected orthotopically with RT112 bladder tumor cells. Conventional chemoradiation involved injecting gemcitabine (10 mg/kg) before 6 Gy targeted irradiation of the bladder area using the Small Animal Radiation Research Platform (SARRP). Ultrasound-mediated gemcitabine delivery (10 mg/kg gemcitabine) involved either coadministration of microbubbles with gemcitabine or conjugating gemcitabine onto microbubbles followed by exposure to ultrasound (1.1 MHz center frequency, 1 MPa peak negative pressure, 1% duty cycle, and 0.5 Hz pulse repetition frequency) before SARRP irradiation. The effect of ultrasound and microbubbles alone was also tested. Tumor volumes were measured by 3D ultrasound imaging. Acute normal-tissue toxicity from 12 Gy to the lower bowel area was assessed using an intestinal crypt assay in mice culled 3.75 days posttreatment. RESULTS A significant delay in tumor growth was observed with conventional chemoradiation therapy and both microbubble groups (P < .05 compared with the radiation-only group). Transient weight loss was seen in the microbubble groups, which resolved within 10 days posttreatment. A positive correlation was found between weight loss on day 3 posttreatment and tumor growth delay (P < .05; R2 = 0.76). In contrast with conventional chemoradiation therapy, ultrasound-mediated drug delivery methods did not exacerbate the acute intestinal toxicity using the crypt assay. CONCLUSIONS Ultrasound and microbubbles offer a promising new approach for improving chemoradiation therapy for muscle-invasive bladder cancer, maintaining a delay in tumor growth but with reduced acute intestinal toxicity compared with conventional chemoradiation therapy.
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Affiliation(s)
- Jia-Ling Ruan
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Richard J Browning
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Yesna O Yildiz
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Michael Gray
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Luca Bau
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Sukanta Kamila
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - James Thompson
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Amy Elliott
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Sean Smart
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Borivoj Vojnovic
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Eleanor Stride
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Anne E Kiltie
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom.
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