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Karam J, Constanzo J, Pichard A, Gros L, Chopineau J, Morille M, Pouget JP. Rapid communication: insights into the role of extracellular vesicles during Auger radioimmunotherapy. Int J Radiat Biol 2023; 99:109-118. [PMID: 34270378 DOI: 10.1080/09553002.2021.1955999] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE Non-targeted effects, including bystander and systemic effects, play a crucial role during Auger targeted radionuclide therapy. Here, we investigated whether small extracellular vesicles (sEVs) produced by irradiated cells could contribute to the bystander cytotoxic effects in vitro and also to therapeutic efficacy in vivo, after their injection in tumor xenografts. MATERIALS AND METHODS B16F10 melanoma donor cells were exposed to radiolabeled antibodies (Auger radioimmunotherapy, RIT) for 48 h or to X-rays (donor cells). Then, donor cells were incubated with fresh medium for 2 h to prepare conditioned medium (CM) that was transferred onto recipient cells for bystander effect assessment, or used for sEVs enrichment. Resulting sEVs were incubated in vitro with recipient cells for determining bystander cytotoxicity, or injected in B16F10 melanoma tumors harbored by athymic and C57BL/6 mice. RESULTS In vitro analysis of bystander cytotoxic effects showed that CM killed about 30-40% of melanoma cells. SEVs isolated from CM contributed to this effect. Moreover, the double-stranded DNA (dsDNA) content was increased in sEVs isolated from CM of exposed cells compared to control (not exposed), but the difference was significant only for the X-ray condition. These results were supported by immunodetection of cytosolic dsDNA in donor cells, a phenomenon that should precede dsDNA enrichment in sEVs. However, sEVs cytotoxicity could not be detected in vivo. Indeed, in athymic and in immunocompetent mice that received four intratumoral injections of sEVs (1/day), tumor growth was not delayed compared with untreated controls. Tumor growth was slightly (not significantly) delayed in immunocompetent mice treated with sEVs from X-ray-exposed cells, and significantly with sEVs purified from CM collected after 48 h of incubation. These results highlight the need to determine the optimal conditions, including radiation absorbed dose and sEVs collection time, to obtain the strongest cytotoxic effects. CONCLUSIONS This study demonstrates that sEVs could play a role during Auger RIT through bystander effects in vitro. No systemic effects were observed in vivo, under our experimental conditions. However, X-rays experiments showed that sEVs collection time might be influencing the nature of sEVs, a parameter that should also be investigated during Auger RIT.
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Affiliation(s)
- Jihad Karam
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194, Institut Régional du Cancer de Montpellier (ICM), Université de Montpellier, Montpellier, France
| | - Julie Constanzo
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194, Institut Régional du Cancer de Montpellier (ICM), Université de Montpellier, Montpellier, France
| | - Alexandre Pichard
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194, Institut Régional du Cancer de Montpellier (ICM), Université de Montpellier, Montpellier, France
| | - Laurent Gros
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194, Institut Régional du Cancer de Montpellier (ICM), Université de Montpellier, Montpellier, France
| | - Joël Chopineau
- ICGM, ENSCM, CNRS, Université de Montpellier, Montpellier, France
| | - Marie Morille
- ICGM, ENSCM, CNRS, Université de Montpellier, Montpellier, France
| | - Jean-Pierre Pouget
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194, Institut Régional du Cancer de Montpellier (ICM), Université de Montpellier, Montpellier, France
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Noverraz F, Robin B, Passemard S, Fauvel B, Presumey J, Rigal E, Cookson A, Chopineau J, Martineau P, Villalba M, Jorgensen C, Aubert-Pouëssel A, Morille M, Gerber-Lemaire S. Novel trehalose-based excipients for stabilizing nebulized anti-SARS-CoV-2 antibody. Int J Pharm 2023; 630:122463. [PMID: 36462738 PMCID: PMC9710110 DOI: 10.1016/j.ijpharm.2022.122463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/23/2022] [Accepted: 11/27/2022] [Indexed: 12/02/2022]
Abstract
COVID-19 is caused by the infection of the lungs by SARS-CoV-2. Monoclonal antibodies, such as sotrovimab, showed great efficiency in neutralizing the virus before its internalization by lung epithelial cells. However, parenteral routes are still the preferred route of administration, even for local infections, which requires injection of high doses of antibody to reach efficacious concentrations in the lungs. Lung administration of antibodies would be more relevant requiring lower doses, thus reducing the costs and the side effects. But aerosolization of therapeutic proteins is very challenging, as the different processes available are harsh and trigger protein aggregation and conformational changes. This decreases the efficiency of the treatment, and can increase its immunogenicity. To address those issues, we developed a series of new excipients composed of a trehalose core, a succinyl side chain and a hydrophobic carbon chain (from 8 to 16 carbons). Succinylation increased the solubility of the excipients, allowing their use at relevant concentrations for protein stabilization. In particular, the excipient with 16 carbons (C16TreSuc) used at 5.6 mM was able to preserve colloidal stability and antigen-binding ability of sotrovimab during the nebulization process. It could also be used as a cryoprotectant, allowing storage of sotrovimab in a lyophilized form during weeks. Finally, we demonstrated that C16TreSuc could be used as an excipient to stabilize antibodies for the treatment against COVID-19, by in vitro and in vivo assays. The presence of C16TreSuc during nebulization preserved the neutralization capacity of sotrovimab against SARS-CoV-2 in vitro; an increase of its efficacy was even observed, compared to the non-nebulized control. The in vivo study also showed the wide distribution of sotrovimab in mice lungs, after nebulization with 5.6 mM of excipient. This work brings a solution to stabilize therapeutic proteins during storage and nebulization, making pulmonary immunotherapy possible in the treatment of COVID-19 and other lung diseases.
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Affiliation(s)
- François Noverraz
- Group for Functionalized Biomaterials, Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC SCI-SB-SG, Station 6, CH-1015 Lausanne, Switzerland
| | - Baptiste Robin
- MedXCell Science, Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Solène Passemard
- Montpellier Life Science Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Bénédicte Fauvel
- CYTEA BIO, Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Jessy Presumey
- CYTEA BIO, Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Emilie Rigal
- CYTEA BIO, Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Alan Cookson
- MedXCell SA, Av. des Planches 20C, 1820 Montreux, Suisse
| | - Joël Chopineau
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - Martin Villalba
- IRMB, Univ Montpellier, INSERM, CNRS, CHU Montpellier, Montpellier, France
| | | | | | - Marie Morille
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Sandrine Gerber-Lemaire
- Group for Functionalized Biomaterials, Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC SCI-SB-SG, Station 6, CH-1015 Lausanne, Switzerland.
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Guari Y, Cahu M, Félix G, Sene S, Long J, Chopineau J, Devoisselle JM, Larionova J. Nanoheterostructures based on nanosized Prussian blue and its Analogues: Design, properties and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214497] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Cahu M, Ali LMA, Sene S, Long J, Camerel F, Ciancone M, Salles F, Chopineau J, Devoisselle JM, Felix G, Cubedo N, Rossel M, Guari Y, Bettache N, Larionova J, Gary-Bobo M. A rational study of the influence of Mn 2+-insertion in Prussian blue nanoparticles on their photothermal properties. J Mater Chem B 2021; 9:9670-9683. [PMID: 34726228 DOI: 10.1039/d1tb00888a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We investigated a series of Mn2+-Prussian blue (PB) nanoparticles NazMnxFe1-x[Fe(CN)6]1-y□y·nH2O of similar size, surface state and cubic morphology with various amounts of Mn2+ synthesized through a one step self-assembly reaction. We demonstrated by a combined experimental-theoretical approach that during the synthesis, Mn2+ substituted Fe3+ up to a Mn/Na-Mn-Fe ratio of 32 at% in the PB structure, while for higher amounts, the Mn2[Fe(CN)6] analogue is obtained. For comparison, the post-synthetic insertion of Mn2+ in PB nanoparticles was also investigated and completed with Monte-Carlo simulations to probe the plausible adsorption sites. The photothermal conversion efficiency (η) of selected samples was determined and showed a clear dependence on the Mn2+amount with a maximum efficiency for a Mn/Na-Mn-Fe ratio of 10 at% associated with a dependence on the nanoparticle concentration. Evaluation of the in vitro photothermal properties of these nanoparticles performed on triple negative human breast adenocarcinoma (MDA-MB-231) cells by using continuous and pulsed laser irradiation confirm their excellent PTT efficiency permitting low dose use.
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Affiliation(s)
- Maëlle Cahu
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Lamiaa M A Ali
- IBMM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France. .,Department of Biochemistry, Medical Research Institute, University of Alexandria, Alexandria, Egypt
| | - Saad Sene
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Jérôme Long
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Franck Camerel
- Univ Rennes, ENSCR, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, 35000 Rennes, France
| | - Mathieu Ciancone
- Univ Rennes, ENSCR, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, 35000 Rennes, France
| | - Fabrice Salles
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Joël Chopineau
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | | | - Gautier Felix
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Nicolas Cubedo
- MMDN, Univ. Montpellier, EPHE, PSL, INSERM, Montpellier, F-34095, France
| | - Mireille Rossel
- MMDN, Univ. Montpellier, EPHE, PSL, INSERM, Montpellier, F-34095, France
| | - Yannick Guari
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Nadir Bettache
- IBMM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
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Le Saux S, Aubert-Pouëssel A, Mohamed KE, Martineau P, Guglielmi L, Devoisselle JM, Legrand P, Chopineau J, Morille M. Interest of extracellular vesicles in regards to lipid nanoparticle based systems for intracellular protein delivery. Adv Drug Deliv Rev 2021; 176:113837. [PMID: 34144089 DOI: 10.1016/j.addr.2021.113837] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 06/04/2021] [Accepted: 06/12/2021] [Indexed: 12/14/2022]
Abstract
Compared to chemicals that continue to dominate the overall pharmaceutical market, protein therapeutics offer the advantages of higher specificity, greater activity, and reduced toxicity. While nearly all existing therapeutic proteins were developed against soluble or extracellular targets, the ability for proteins to enter cells and target intracellular compartments can significantly broaden their utility for a myriad of exiting targets. Given their physical, chemical, biological instability that could induce adverse effects, and their limited ability to cross cell membranes, delivery systems are required to fully reveal their biological potential. In this context, as natural protein nanocarriers, extracellular vesicles (EVs) hold great promise. Nevertheless, if not present naturally, bringing an interest protein into EV is not an easy task. In this review, we will explore methods used to load extrinsic protein into EVs and compare these natural vectors to their close synthetic counterparts, liposomes/lipid nanoparticles, to induce intracellular protein delivery.
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Ngo G, Félix G, Dorandeu C, Devoisselle JM, Costa L, Milhiet PE, Guari Y, Larionova J, Chopineau J. A Novel Approach to the Facile Growth and Organization of Photothermal Prussian Blue Nanocrystals on Different Surfaces. Nanomaterials (Basel) 2021; 11:1749. [PMID: 34361135 PMCID: PMC8308188 DOI: 10.3390/nano11071749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/24/2021] [Accepted: 06/27/2021] [Indexed: 01/16/2023]
Abstract
We report here a novel "one-pot" approach for the controlled growth and organization of Prussian blue nanostructures on three different surfaces: pure Au0, cysteamine-functionalized Au0, and SiO2-supported lipid bilayers with different natures of lipids. We demonstrate that fine control over the size, morphology, and the degree and homogeneity of the surface coverage by Prussian Blue (PB) nanostructures may be achieved by manipulating different parameters, which are the precursor concentration, the nature of the functional groups or the nature of lipids on the surfaces. This allows the growth of isolated PB nanopyramids and nanocubes or the design of thin dense films over centimeter square surfaces. The formation of unusual Prussian blue nanopyramids is discussed. Finally, we demonstrate, by using experimental techniques and theoretical modeling, that PB nanoparticles deposited on the gold surface exhibit strong photothermal properties, permitting a rapid temperature increase up to 90 °C with a conversion of the laser power of almost 50% for power source heat.
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Affiliation(s)
- Giang Ngo
- ICGM, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France; (G.N.); (C.D.); (J.-M.D.); (J.L.)
| | - Gautier Félix
- ICGM, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France; (G.N.); (C.D.); (J.-M.D.); (J.L.)
| | - Christophe Dorandeu
- ICGM, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France; (G.N.); (C.D.); (J.-M.D.); (J.L.)
| | - Jean-Marie Devoisselle
- ICGM, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France; (G.N.); (C.D.); (J.-M.D.); (J.L.)
| | - Luca Costa
- CBS, Univ Montpellier, CNRS, INSERM, 34090 Montpellier, France; (L.C.); (P.-E.M.)
| | | | - Yannick Guari
- ICGM, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France; (G.N.); (C.D.); (J.-M.D.); (J.L.)
| | - Joulia Larionova
- ICGM, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France; (G.N.); (C.D.); (J.-M.D.); (J.L.)
| | - Joël Chopineau
- ICGM, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France; (G.N.); (C.D.); (J.-M.D.); (J.L.)
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Le Saux S, Aubert‐Pouëssel A, Ouchait L, Mohamed KE, Martineau P, Guglielmi L, Devoisselle J, Legrand P, Chopineau J, Morille M. Nanotechnologies for Intracellular Protein Delivery: Recent Progress in Inorganic and Organic Nanocarriers. Adv Therap 2021. [DOI: 10.1002/adtp.202100009] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sarah Le Saux
- ICGM Universite Montpellier ENSCM, CNRS Montpellier France
| | | | - Lyria Ouchait
- ICGM Universite Montpellier ENSCM, CNRS Montpellier France
| | | | | | | | | | | | - Joël Chopineau
- ICGM Universite Montpellier ENSCM, CNRS Montpellier France
| | - Marie Morille
- ICGM Universite Montpellier ENSCM, CNRS Montpellier France
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Doufène K, Basile I, Lebrun A, Pirot N, Escande A, Chopineau J, Devoisselle JM, Bettache N, Aubert-Pouëssel A. Vegetable oil-based hybrid microparticles as a green and biocompatible system for subcutaneous drug delivery. Int J Pharm 2021; 592:120070. [PMID: 33188895 DOI: 10.1016/j.ijpharm.2020.120070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 12/17/2022]
Abstract
The aim of this study was to evidence the ability of vegetable oil-based hybrid microparticles (HMP) to be an efficient and safe drug delivery system after subcutaneous administration. The HMP resulted from combination of a thermostabilized emulsification process and a sol-gel chemistry. First of all, castor oil was successfully silylated by means of (3-Isocyanatopropyl)trimethoxysilane in solvent-free and catalyst-free conditions. Estradiol, as a model drug, was dissolved in silylated castor oil (ICOm) prior to emulsification, and then an optimal sol-gel crosslinking was achieved inside the ICOm microdroplets. The resulting estradiol-loaded microparticles were around 80 µm in size and allowed to entrap 4 wt% estradiol. Their release kinetics in a PBS/octanol biphasic system exhibited a one-week release profile, and the released estradiol was fully active on HeLa ERE-luciferase ERα cells. The hybrid microparticles were cytocompatible during preliminary tests on NIH 3T3 fibroblasts (ISO 10993-5 standard) and they were fully biocompatible after subcutaneous injection on mice (ISO 10993-6 standard) underlining their high potential as a safe and long-acting subcutaneous drug delivery system.
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Affiliation(s)
- Koceïla Doufène
- Institut Charles Gerhardt Montpellier (ICGM), Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - Aurélien Lebrun
- Laboratoire des Mesures Physiques (LMP), Univ. Montpellier, CNRS, Montpellier, France
| | - Nelly Pirot
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Univ. Montpellier, ICM, INSERM, Montpellier, France; BioCampus Montpellier (BCM), Univ. Montpellier, CNRS, INSERM, Montpellier, France
| | - Aurélie Escande
- Hydrosciences Montpellier (HSM), Univ. Montpellier, CNRS, IRD, Montpellier, France
| | - Joël Chopineau
- Institut Charles Gerhardt Montpellier (ICGM), Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Jean-Marie Devoisselle
- Institut Charles Gerhardt Montpellier (ICGM), Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Nadir Bettache
- Institut des Biomolécules Max Mousseron (IBMM), Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Anne Aubert-Pouëssel
- Institut Charles Gerhardt Montpellier (ICGM), Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
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Ali LMA, Mathlouthi E, Cahu M, Sene S, Daurat M, Long J, Guari Y, Salles F, Chopineau J, Devoisselle JM, Larionova J, Gary-Bobo M. Synergic effect of doxorubicin release and two-photon irradiation of Mn2+-doped Prussian blue nanoparticles on cancer therapy. RSC Adv 2020; 10:2646-2649. [PMID: 35496092 PMCID: PMC9048416 DOI: 10.1039/c9ra09133e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/02/2020] [Indexed: 12/14/2022] Open
Abstract
We demonstrate here that Mn2+-doped Prussian blue nanoparticles of ca. 55 nm loaded with doxorubicin may be used as efficient therapeutic agents for combined photothermal and chemo-therapy of cancer cells with a synergic effect under two photon irradiation. Mn2+-doped Prussian blue nanoparticles loaded with doxorubicin present high efficiency for combined photothermal and chemotherapy of cancer cells with a synergic effect under two-photon irradiation.![]()
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Le Saux S, Aarrass H, Lai-Kee-Him J, Bron P, Armengaud J, Miotello G, Bertrand-Michel J, Dubois E, George S, Faklaris O, Devoisselle JM, Legrand P, Chopineau J, Morille M. Post-production modifications of murine mesenchymal stem cell (mMSC) derived extracellular vesicles (EVs) and impact on their cellular interaction. Biomaterials 2019; 231:119675. [PMID: 31838346 DOI: 10.1016/j.biomaterials.2019.119675] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 12/06/2019] [Indexed: 12/14/2022]
Abstract
In regards to their key role in intercellular communication, extracellular vesicles (EVs) have a strong potential as bio-inspired drug delivery systems (DDS). With the aim of circumventing some of their well-known issues (production yield, drug loading yield, pharmacokinetics), we specifically focused on switching the biological vision of these entities to a more physico-chemical one, and to consider and fine-tune EVs as synthetic vectors. To allow a rational use, we first performed a full physico-chemical (size, concentration, surface charge, cryoTEM), biochemical (western blot, proteomics, lipidomics, transcriptomics) and biological (cell internalisation) characterisation of murine mesenchymal stem cell (mMSC)-derived EVs. A stability study based on evaluating the colloidal behaviour of obtained vesicles was performed in order to identify optimal storage conditions. We evidenced the interest of using EVs instead of liposomes, in regards to target cell internalisation efficiency. EVs were shown to be internalised through a caveolae and cholesterol-dependent pathway, following a different endocytic route than liposomes. Then, we characterised the effect of physical methods scarcely investigated with EVs (extrusion through 50 nm membranes, freeze-drying, sonication) on EV size, concentration, structure and cell internalisation properties. Our extensive characterisation of the effect of these physical processes highlights their promise as loading methods to make EVs efficient delivery vehicles.
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Affiliation(s)
- Sarah Le Saux
- ICGM, Univ Montpellier, ENSCM, CNRS, Montpellier, France
| | - Hanna Aarrass
- ICGM, Univ Montpellier, ENSCM, CNRS, Montpellier, France
| | | | - Patrick Bron
- CBS, Univ Montpellier, INSERM, CNRS, Montpellier, France
| | - Jean Armengaud
- Laboratory «Innovative technologies for Detection and Diagnostics», CEA-Marcoule, DRF/JOLIOT/DMTS/SPI/Li2D, Bagnols-sur-Cèze, France
| | - Guylaine Miotello
- Laboratory «Innovative technologies for Detection and Diagnostics», CEA-Marcoule, DRF/JOLIOT/DMTS/SPI/Li2D, Bagnols-sur-Cèze, France
| | - Justine Bertrand-Michel
- MetaToul-LIPIDOMIQUE, Institut des Maladies Métaboliques et Cardiovasculaires (I2MC) Inserm/Université Paul Sabatier UMR1048, Toulouse, France
| | - Emeric Dubois
- MGX-Montpellier GenomiX, IGF, CNRS, INSERM, Univ Montpellier, Montpellier, France
| | - Simon George
- MGX-Montpellier GenomiX, IGF, CNRS, INSERM, Univ Montpellier, Montpellier, France
| | - Orestis Faklaris
- Montpellier Ressources Imagerie, Biocampus, CNRS, INSERM, Univ Montpellier, Montpellier, France
| | | | | | - Joël Chopineau
- ICGM, Univ Montpellier, ENSCM, CNRS, Montpellier, France; Université de Nîmes, Nîmes, France
| | - Marie Morille
- ICGM, Univ Montpellier, ENSCM, CNRS, Montpellier, France.
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Theodoratou A, Costa L, Bonnet L, Blanc C, Lapinte V, Etienne P, Milhiet PE, Robin JJ, Oberdisse J, Chopineau J, Aubert-Pouëssel A. Physico-chemical properties and surface characterization of renewable hybrid nanofilms interacting with model proteins. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ngo G, Félix G, Long J, Costa L, Saavedra V. O, Milhiet PE, Devoisselle JM, Guari Y, Larionova J, Chopineau J. A simple approach for controlled deposition of Prussian blue analogue nanoparticles on a functionalised plasmonic gold surface. NEW J CHEM 2019. [DOI: 10.1039/c9nj00251k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface plasmon resonance monitoring of Prussian blue analogue nanoparticles anchored on a gold-cysteamine substrate.
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Affiliation(s)
- Giang Ngo
- Institut Charles Gerhardt Montpellier (ICGM), Univ Montpellier, ENSCM, CNRS, Montpellier
- France
| | - Gautier Félix
- Institut Charles Gerhardt Montpellier (ICGM), Univ Montpellier, ENSCM, CNRS, Montpellier
- France
| | - Jérôme Long
- Institut Charles Gerhardt Montpellier (ICGM), Univ Montpellier, ENSCM, CNRS, Montpellier
- France
| | - Luca Costa
- Centre de Biochimie Structurale (CBS), CNRS, INSERM, Univ Montpellier
- France
| | - Oscar Saavedra V.
- Centre de Biochimie Structurale (CBS), CNRS, INSERM, Univ Montpellier
- France
| | | | - Jean-Marie Devoisselle
- Institut Charles Gerhardt Montpellier (ICGM), Univ Montpellier, ENSCM, CNRS, Montpellier
- France
| | - Yannick Guari
- Institut Charles Gerhardt Montpellier (ICGM), Univ Montpellier, ENSCM, CNRS, Montpellier
- France
| | - Joulia Larionova
- Institut Charles Gerhardt Montpellier (ICGM), Univ Montpellier, ENSCM, CNRS, Montpellier
- France
| | - Joël Chopineau
- Institut Charles Gerhardt Montpellier (ICGM), Univ Montpellier, ENSCM, CNRS, Montpellier
- France
- Université de Nîmes Rue Georges Salan 30000 Nîmes
- France
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13
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Rascol E, Pisani C, Dorandeu C, Nyalosaso JL, Charnay C, Daurat M, Da Silva A, Devoisselle JM, Gaillard JC, Armengaud J, Prat O, Maynadier M, Gary-Bobo M, Garcia M, Chopineau J, Guari Y. Biosafety of Mesoporous Silica Nanoparticles. Biomimetics (Basel) 2018; 3:E22. [PMID: 31105244 PMCID: PMC6352691 DOI: 10.3390/biomimetics3030022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 12/25/2022] Open
Abstract
Careful analysis of any new nanomedicine device or disposal should be undertaken to comprehensively characterize the new product before application, so that any unintended side effect is minimized. Because of the increasing number of nanotechnology-based drugs, we can anticipate that regulatory authorities might adapt the approval process for nanomedicine products due to safety concerns, e.g., request a more rigorous testing of the potential toxicity of nanoparticles (NPs). Currently, the use of mesoporous silica nanoparticles (MSN) as drug delivery systems is challenged by a lack of data on the toxicological profile of coated or non-coated MSN. In this context, we have carried out an extensive study documenting the influence of different functionalized MSN on the cellular internalization and in vivo behaviour. In this article, a synthesis of these works is reviewed and the perspectives are drawn. The use of magnetic MSN (Fe3O4@MSN) allows an efficient separation of coated NPs from cell cultures with a simple magnet, leading to results regarding corona formation without experimental bias. Our interest is focused on the mechanism of interaction with model membranes, the adsorption of proteins in biological fluids, the quantification of uptake, and the effect of such NPs on the transcriptomic profile of hepatic cells that are known to be readily concerned by NPs' uptake in vivo, especially in the case of an intravenous injection.
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Affiliation(s)
- Estelle Rascol
- Institute of Chemistry and Biology of Membranes and Nano-objects (CBMN) UMR-5248, CNRS, University of Bordeaux, INP, Allée Geoffroy St Hilaire, 33600 Pessac, France.
- Institute Charles Gerhardt of Montpellier (ICGM), Place E. Bataillon, 34095 Montpellier, France.
| | - Cédric Pisani
- The French Alternative Energies and Atomic Energy Commission (CEA), Biosciences and Biotechnologies Institute (BIAM), 30200 Bagnols-sur-Cèze, France.
| | - Christophe Dorandeu
- Institute Charles Gerhardt of Montpellier (ICGM), Place E. Bataillon, 34095 Montpellier, France.
| | - Jeff L Nyalosaso
- Institute Charles Gerhardt of Montpellier (ICGM), Place E. Bataillon, 34095 Montpellier, France.
| | - Clarence Charnay
- Institute Charles Gerhardt of Montpellier (ICGM), Place E. Bataillon, 34095 Montpellier, France.
| | - Morgane Daurat
- NanoMedSyn, 15 Avenue Charles Flahault, 34090 Montpellier, France.
| | - Afitz Da Silva
- NanoMedSyn, 15 Avenue Charles Flahault, 34090 Montpellier, France.
| | - Jean-Marie Devoisselle
- Institute Charles Gerhardt of Montpellier (ICGM), Place E. Bataillon, 34095 Montpellier, France.
| | - Jean-Charles Gaillard
- Laboratoire Innovations technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, 30207 Bagnols-sur-Cèze, France.
| | - Jean Armengaud
- Laboratoire Innovations technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, 30207 Bagnols-sur-Cèze, France.
| | - Odette Prat
- The French Alternative Energies and Atomic Energy Commission (CEA), Biosciences and Biotechnologies Institute (BIAM), 30200 Bagnols-sur-Cèze, France.
| | - Marie Maynadier
- NanoMedSyn, 15 Avenue Charles Flahault, 34090 Montpellier, France.
| | - Magali Gary-Bobo
- Max Mousseron Biomolecule Institute of Montpellier (IBMM), 15 Avenue Charles Flahault, 34090 Montpellier, France.
| | - Marcel Garcia
- NanoMedSyn, 15 Avenue Charles Flahault, 34090 Montpellier, France.
| | - Joël Chopineau
- Institute Charles Gerhardt of Montpellier (ICGM), Place E. Bataillon, 34095 Montpellier, France.
| | - Yannick Guari
- Institute Charles Gerhardt of Montpellier (ICGM), Place E. Bataillon, 34095 Montpellier, France.
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14
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Pisani C, Rascol E, Dorandeu C, Charnay C, Guari Y, Chopineau J, Devoisselle JM, Prat O. Biocompatibility assessment of functionalized magnetic mesoporous silica nanoparticles in human HepaRG cells. Nanotoxicology 2017; 11:871-890. [PMID: 28937306 DOI: 10.1080/17435390.2017.1378749] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Magnetic mesoporous silica nanoparticles (M-MSNs) are a promising class of nanoparticles for drug delivery. However, a deep understanding of the toxicological mechanisms of action of these nanocarriers is essential, especially in the liver. The potential toxicity on HepaRG cells of pristine, pegylated (PEG), and lipid (DMPC) M-MSNs were compared. Based on MTT assay and real-time cell impedance, none of these NPs presented an extensive toxicity on hepatic cells. However, we observed by transmission electron microscopy (TEM) that the DMPC and pristine M-MSNs were greatly internalized. In comparison, PEG M-MSNs showed a slower cellular uptake. Whole gene expression profiling revealed the M-MSNs molecular modes of action in a time- and dose-dependent manner. The lowest dose tested (1.6 µg/cm2) induced no molecular effect and was defined as 'No Observed Transcriptional Effect level.' The dose 16 µg/cm2 revealed nascent but transient effects. At the highest dose (80 µg/cm2), adverse effects have clearly arisen and increased over time. The limit of biocompatibility for HepaRG cells could be set at 16 µg/cm2 for these NPs. Thanks to a comparative pathway-driven analysis, we highlighted the sequence of events that leads to the disruption of hepatobiliary system, elicited by the three types of M-MSNs, at the highest dose. The Adverse Outcome Pathway of hepatic cholestasis was implicated. Toxicogenomics applied to cell cultures is an effective tool to characterize and compare the modes of action of many substances. We propose this strategy as an asset for upstream selection of the safest nanocarriers in the framework of regulation for nanobiosafety.
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Affiliation(s)
- Cédric Pisani
- a MACS, UMR 5253 CNRS-ENSCM-UM , Institut Charles Gerhardt de Montpellier , Montpellier , France.,b Direction de la Recherche Fondamentale-BIAM , CEA , Bagnols-sur-Cèze , France
| | - Estelle Rascol
- a MACS, UMR 5253 CNRS-ENSCM-UM , Institut Charles Gerhardt de Montpellier , Montpellier , France
| | - Christophe Dorandeu
- a MACS, UMR 5253 CNRS-ENSCM-UM , Institut Charles Gerhardt de Montpellier , Montpellier , France
| | - Clarence Charnay
- c IMNO, UMR 5253 CNRS-ENSCM-UM , Institut Charles Gerhardt de Montpellier , Montpellier , France
| | - Yannick Guari
- c IMNO, UMR 5253 CNRS-ENSCM-UM , Institut Charles Gerhardt de Montpellier , Montpellier , France
| | - Joël Chopineau
- a MACS, UMR 5253 CNRS-ENSCM-UM , Institut Charles Gerhardt de Montpellier , Montpellier , France
| | - Jean-Marie Devoisselle
- a MACS, UMR 5253 CNRS-ENSCM-UM , Institut Charles Gerhardt de Montpellier , Montpellier , France
| | - Odette Prat
- b Direction de la Recherche Fondamentale-BIAM , CEA , Bagnols-sur-Cèze , France
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15
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Pisani C, Rascol E, Dorandeu C, Gaillard JC, Charnay C, Guari Y, Chopineau J, Armengaud J, Devoisselle JM, Prat O. The species origin of the serum in the culture medium influences the in vitro toxicity of silica nanoparticles to HepG2 cells. PLoS One 2017; 12:e0182906. [PMID: 28796831 PMCID: PMC5552166 DOI: 10.1371/journal.pone.0182906] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 07/26/2017] [Indexed: 01/08/2023] Open
Abstract
The formation of a protein corona around nanoparticles can influence their toxicity, triggering cellular responses that may be totally different from those elicited by pristine nanoparticles. The main objective of this study was to investigate whether the species origin of the serum proteins forming the corona influences the in vitro toxicity assessment of silica nanoparticles. Coronas were preformed around nanoparticles before cell exposures by incubation in fetal bovine (FBS) or human (HS) serum. The compositions of these protein coronas were assessed by nano-LC MS/MS. The effects of these protein-coated nanoparticles on HepG2 cells were monitored using real-time cell impedance technology. The nanoparticle coronas formed in human or fetal bovine serum comprised many homologous proteins. Using human compared with fetal bovine serum, nanoparticle toxicity in HepG2 cells decreased by 4-fold and 1.5-fold, when used at 50 and 10μg/mL, respectively. It is likely that "markers of self" are present in the serum and are recognized by human cell receptors. Preforming a corona with human serum seems to be more appropriate for in vitro toxicity testing of potential nanocarriers using human cells. In vitro cytotoxicity assays must reflect in vivo conditions as closely as possible to provide solid and useful results.
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Affiliation(s)
- Cédric Pisani
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, Place Eugène Bataillon, Montpellier, France
- CEA, Direction de la Recherche Fondamentale—BIAM, Site de Marcoule, Bagnols-sur-Cèze, France
| | - Estelle Rascol
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, Place Eugène Bataillon, Montpellier, France
| | - Christophe Dorandeu
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, Place Eugène Bataillon, Montpellier, France
| | - Jean-Charles Gaillard
- CEA, Direction de la Recherche Fondamentale—IBITECS, Site de Marcoule, Bagnols-sur-Cèze, France
| | - Clarence Charnay
- Institut Charles Gerhardt de Montpellier, IMNO, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, Montpellier, France
| | - Yannick Guari
- Institut Charles Gerhardt de Montpellier, IMNO, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, Montpellier, France
| | - Joël Chopineau
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, Place Eugène Bataillon, Montpellier, France
- Université de Nîmes Rue Georges Salan, Nîmes, France
| | - Jean Armengaud
- CEA, Direction de la Recherche Fondamentale—IBITECS, Site de Marcoule, Bagnols-sur-Cèze, France
| | - Jean-Marie Devoisselle
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, Place Eugène Bataillon, Montpellier, France
| | - Odette Prat
- CEA, Direction de la Recherche Fondamentale—BIAM, Site de Marcoule, Bagnols-sur-Cèze, France
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16
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Theodoratou A, Bonnet L, Dieudonné P, Massiera G, Etienne P, Robin JJ, Lapinte V, Chopineau J, Oberdisse J, Aubert-Pouëssel A. Vegetable oil hybrid films cross-linked at the air-water interface: formation kinetics and physical characterization. Soft Matter 2017; 13:4569-4579. [PMID: 28613327 DOI: 10.1039/c7sm00596b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Vegetable oil based hybrid films were developed thanks to a novel solvent- and heating-free method at the air-water interface using silylated castor oil cross-linked via a sol-gel reaction. To understand the mechanism of the hybrid film formation, the reaction kinetics was studied in detail by using complementary techniques: rheology, thermogravimetric analysis, and infrared spectroscopy. The mechanical properties of the final films were investigated using nano-indentation, whereas their structure was studied using a combination of wide-angle X-ray scattering, electron diffraction, and atomic force microscopy. We found that solid and transparent films form in 24 hours and, by changing the silica precursor to castor oil ratio, their mechanical properties are tunable in the MPa-range by about a factor of twenty. In addition to that, a possible optimization of the cross-linking reaction with different catalysts was explored, and finally cytotoxicity tests were performed on fibroblasts proving the absence of film toxicity. The results of this work pave the way to a straightforward synthesis of castor-oil films with tunable mechanical properties: hybrid films cross-linked at the air-water interface combine an easy and cheap spreading protocol with the features of their thermal history optimized for possible future micro/nano drug loading, thus representing excellent candidates for the replacement of non-environmentally friendly petroleum-based materials.
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Affiliation(s)
- Antigoni Theodoratou
- Institut Charles Gerhardt Montpellier (ICGM), UMR5253 CNRS-UM-ENSCM, place Eugène Bataillon, 34090 Montpellier, France.
| | - Laurent Bonnet
- Laboratoire Charles Coulomb (L2C), UMR5221 CNRS-UM F34095, Montpellier, France
| | - Philippe Dieudonné
- Laboratoire Charles Coulomb (L2C), UMR5221 CNRS-UM F34095, Montpellier, France
| | - Gladys Massiera
- Laboratoire Charles Coulomb (L2C), UMR5221 CNRS-UM F34095, Montpellier, France
| | - Pascal Etienne
- Laboratoire Charles Coulomb (L2C), UMR5221 CNRS-UM F34095, Montpellier, France
| | - Jean-Jacques Robin
- Institut Charles Gerhardt Montpellier (ICGM), UMR5253 CNRS-UM-ENSCM, place Eugène Bataillon, 34090 Montpellier, France.
| | - Vincent Lapinte
- Institut Charles Gerhardt Montpellier (ICGM), UMR5253 CNRS-UM-ENSCM, place Eugène Bataillon, 34090 Montpellier, France.
| | - Joël Chopineau
- Institut Charles Gerhardt Montpellier (ICGM), UMR5253 CNRS-UM-ENSCM, place Eugène Bataillon, 34090 Montpellier, France. and Université de Nîmes, rue Georges Salan, 30000 Nîmes, France
| | - Julian Oberdisse
- Laboratoire Charles Coulomb (L2C), UMR5221 CNRS-UM F34095, Montpellier, France
| | - Anne Aubert-Pouëssel
- Institut Charles Gerhardt Montpellier (ICGM), UMR5253 CNRS-UM-ENSCM, place Eugène Bataillon, 34090 Montpellier, France.
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17
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Rascol E, Daurat M, Da Silva A, Maynadier M, Dorandeu C, Charnay C, Garcia M, Lai-Kee-Him J, Bron P, Auffan M, Liu W, Angeletti B, Devoisselle JM, Guari Y, Gary-Bobo M, Chopineau J. Biological Fate of Fe₃O₄ Core-Shell Mesoporous Silica Nanoparticles Depending on Particle Surface Chemistry. Nanomaterials (Basel) 2017; 7:E162. [PMID: 28665317 PMCID: PMC5535228 DOI: 10.3390/nano7070162] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 06/19/2017] [Accepted: 06/23/2017] [Indexed: 12/14/2022]
Abstract
The biological fate of nanoparticles (NPs) for biomedical applications is highly dependent of their size and charge, their aggregation state and their surface chemistry. The chemical composition of the NPs surface influences their stability in biological fluids, their interaction with proteins, and their attraction to the cell membranes. In this work, core-shell magnetic mesoporous silica nanoparticles (Fe₃O₄@MSN), that are considered as potential theranostic candidates, are coated with polyethylene glycol (PEG) or 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) lipid bilayer. Their biological fate is studied in comparison to the native NPs. The physicochemical properties of these three types of NPs and their suspension behavior in different media are investigated. The attraction to a membrane model is also evaluated using a supported lipid bilayer. The surface composition of NPs strongly influences their dispersion in biological fluids mimics, protein binding and their interaction with cell membrane. While none of these types of NPs is found to be toxic on mice four days after intravenous injection of a dose of 40 mg kg-1 of NPs, their surface coating nature influences the in vivo biodistribution. Importantly, NP coated with DMPC exhibit a strong accumulation in liver and a very low accumulation in lung in comparison with nude or PEG ones.
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Affiliation(s)
- Estelle Rascol
- Institut Charles Gerhardt de Montpellier (ICGM), Montpellier University-Campus Triolet (CNRS UMR 5253/UM/ENSCM), Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, France.
| | - Morgane Daurat
- NanoMedSyn, 15 Avenue Charles Flahault, 34093 Montpellier, France.
- IBMM, CNRS UMR 5247/UM/ENSCM Faculty of de Pharmaceutical Sciences of Montpellier 15, Avenue Charles Flahault, CEDEX 05, 34093 Montpellier, France.
| | - Afitz Da Silva
- NanoMedSyn, 15 Avenue Charles Flahault, 34093 Montpellier, France.
- IBMM, CNRS UMR 5247/UM/ENSCM Faculty of de Pharmaceutical Sciences of Montpellier 15, Avenue Charles Flahault, CEDEX 05, 34093 Montpellier, France.
| | - Marie Maynadier
- NanoMedSyn, 15 Avenue Charles Flahault, 34093 Montpellier, France.
| | - Christophe Dorandeu
- Institut Charles Gerhardt de Montpellier (ICGM), Montpellier University-Campus Triolet (CNRS UMR 5253/UM/ENSCM), Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, France.
| | - Clarence Charnay
- Institut Charles Gerhardt de Montpellier (ICGM), Montpellier University-Campus Triolet (CNRS UMR 5253/UM/ENSCM), Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, France.
| | - Marcel Garcia
- IBMM, CNRS UMR 5247/UM/ENSCM Faculty of de Pharmaceutical Sciences of Montpellier 15, Avenue Charles Flahault, CEDEX 05, 34093 Montpellier, France.
| | - Joséphine Lai-Kee-Him
- Center of Structural Biochemistry (CNRS UMR 5048/INSERM U 1054/UM), 29 rue de Navacelles, 34090 Montpellier, France.
| | - Patrick Bron
- Center of Structural Biochemistry (CNRS UMR 5048/INSERM U 1054/UM), 29 rue de Navacelles, 34090 Montpellier, France.
| | - Mélanie Auffan
- Aix-Marseille Université, CNRS, IRD, Coll de France, CEREGE, 13001 Aix en Provence, France.
| | - Wei Liu
- Aix-Marseille Université, CNRS, IRD, Coll de France, CEREGE, 13001 Aix en Provence, France.
| | - Bernard Angeletti
- Aix-Marseille Université, CNRS, IRD, Coll de France, CEREGE, 13001 Aix en Provence, France.
| | - Jean-Marie Devoisselle
- Institut Charles Gerhardt de Montpellier (ICGM), Montpellier University-Campus Triolet (CNRS UMR 5253/UM/ENSCM), Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, France.
| | - Yannick Guari
- Institut Charles Gerhardt de Montpellier (ICGM), Montpellier University-Campus Triolet (CNRS UMR 5253/UM/ENSCM), Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, France.
| | - Magali Gary-Bobo
- IBMM, CNRS UMR 5247/UM/ENSCM Faculty of de Pharmaceutical Sciences of Montpellier 15, Avenue Charles Flahault, CEDEX 05, 34093 Montpellier, France.
| | - Joël Chopineau
- Institut Charles Gerhardt de Montpellier (ICGM), Montpellier University-Campus Triolet (CNRS UMR 5253/UM/ENSCM), Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, France.
- Université de Nîmes, Rue Georges Salan, Nîmes 30000, France.
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18
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Pisani C, Gaillard JC, Dorandeu C, Charnay C, Guari Y, Chopineau J, Devoisselle JM, Armengaud J, Prat O. Experimental separation steps influence the protein content of corona around mesoporous silica nanoparticles. Nanoscale 2017; 9:5769-5772. [PMID: 28429028 DOI: 10.1039/c7nr01654a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In order to direct nanocarriers to their targets efficiently, we have to understand the interactions occurring at the nano-bio interface between nanocarriers and human proteins, which forms the layer called the corona. However, experiments aiming to identify and quantify the proteins in the corona, especially critical steps in the separation of nanoparticles from biological media may affect the corona composition. Here, we used nano-LC MS/MS to compare the protein corona contents obtained after using two different separation methods. We showed that applying centrifugation versus magnetization to isolate nanoparticles surrounded by a corona resulted in protein loss and a reshuffling of their respective abundances.
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Affiliation(s)
- C Pisani
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, F-34095 Montpellier, France
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19
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Pisani C, Gaillard JC, Odorico M, Nyalosaso JL, Charnay C, Guari Y, Chopineau J, Devoisselle JM, Armengaud J, Prat O. The timeline of corona formation around silica nanocarriers highlights the role of the protein interactome. Nanoscale 2017; 9:1840-1851. [PMID: 27858044 DOI: 10.1039/c6nr04765c] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Magnetic mesoporous silica nanoparticles (M-MSNs) represent promising targeting tools for theranostics. Engineering the interaction of nanoparticles (NPs) with biological systems requires an understanding of protein corona formation around the nanoparticles as this drives the biological fate of nanocarriers. We investigated the behavior of proteins in contact with M-MSNs by high-throughput comparative proteomics, using human and bovine sera as biological fluids, in order to assess the adsorption dynamics of proteins in these media. Using system biology tools, and especially protein-protein interaction databases, we demonstrated how the protein network builds up within the corona over the course of the experiment. Based on these results, we introduce and discuss the role of the "corona interactome" as an important factor influencing protein corona evolution. The concept of the "corona interactome" is an original methodology which could be generalized to all NP candidates. Based on this, pre-coating nanocarriers with specific proteins presenting minimal interactions with opsonins might provide them with properties such as stealth.
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Affiliation(s)
- Cédric Pisani
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, F-34095 Montpellier, France and CEA, Direction de la Recherche Fondamentale-BIAM, Site de Marcoule, F-30207 Bagnols-sur-Cèze, France.
| | - Jean-Charles Gaillard
- CEA, Direction de la Recherche Fondamentale-IBITECS, Site de Marcoule, F-30207 Bagnols-sur-Cèze, France
| | - Michaël Odorico
- Institut de Chimie Séparative de Marcoule, UMR 5257 CEA-CNRS-ENSCM-UM, Site de Marcoule, F-30207 Bagnols-sur-Cèze, France
| | - Jeff L Nyalosaso
- Institut Charles Gerhardt de Montpellier, IMNO, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, F-34095 Montpellier, France
| | - Clarence Charnay
- Institut Charles Gerhardt de Montpellier, IMNO, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, F-34095 Montpellier, France
| | - Yannick Guari
- Institut Charles Gerhardt de Montpellier, IMNO, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, F-34095 Montpellier, France
| | - Joël Chopineau
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, F-34095 Montpellier, France and Université de Nîmes Rue Georges Salan, F-30000 Nîmes, France
| | - Jean-Marie Devoisselle
- Institut Charles Gerhardt de Montpellier, MACS, UMR 5253 CNRS-ENSCM-UM, 1701, Place Eugène Bataillon, F-34095 Montpellier, France
| | - Jean Armengaud
- CEA, Direction de la Recherche Fondamentale-IBITECS, Site de Marcoule, F-30207 Bagnols-sur-Cèze, France
| | - Odette Prat
- CEA, Direction de la Recherche Fondamentale-BIAM, Site de Marcoule, F-30207 Bagnols-sur-Cèze, France.
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20
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Maurin-Pasturel G, Rascol E, Busson M, Sevestre S, Lai-Kee-Him J, Bron P, Long J, Chopineau J, Devoisselle JM, Guari Y, Larionova J. 201Tl-labeled Prussian blue and Au@Prussian blue nanoprobes for SPEC-CT imaging: influence of the size, shape and coating on the biodistribution. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00321h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
201Tl-labeled Prussian blue and core@shell Au@Prussian blue nanoparticles coated with the phospholipidic bilayer and dextran were investigated in vivo as nanoprobes by usingSPECT-CT scintigraphy.
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21
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Pisani C, Gaillard J, Odorico M, Nyalosaso J, Charnay C, Guari Y, Chopineau J, Devoisselle J, Armengaud J, Prat O. Corona interactome: A key for deciphering protein adsorption kinetics on silica nanocarriers surface. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Subrini O, Karst J, Sotomayor-Perez AC, Hessel A, Selwa E, Sapay N, Veneziano R, Pansieri J, Chopineau J, Ladant D, Chenal A. Deciphering protein membrane interactions involved in the translocation process of a bacterial toxin, the adenylate cyclase (CyaA) toxin from Bordetella pertussis. Toxicon 2016. [DOI: 10.1016/j.toxicon.2016.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
Over the past two decades, numerous types of nanoparticles (NPs) have been developed for medical applications; however only a few nanomedicines are actually available on the market. One reason is the lack of understanding and data concerning the NP fate and their behavior upon contact with biological media and cell membranes. Biomimetic membrane models are interesting tools to approach and understand NPs-cell membrane interactions. The use of these models permits one to control physical and chemical parameters and to rapidly compare membrane types and the influence of different media conditions. The interactions between NPs and cell membranes can be qualified and quantified using analytical and modeling methods. In this review, the major studies concerning NPs-cell membrane models and associated methods are described. The advantages and drawbacks for each method are compared for the different models. The key mechanisms of interactions between NPs and cell membranes are revealed using cell membrane models and are interrogated in comparison with the NP behavior in cellulo or in vivo. Investigating the interactions between NPs and cell membrane models is now proposed as an intermediate step between physicochemical characterization of NPs and biological assays.
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Affiliation(s)
- Estelle Rascol
- Institut Charles Gerhardt, UMR 5253 CNRS/ENSCM/UM, 8 rue de l'Ecole Normale, 34296, Cedex 5 Montpellier, France
| | - Jean-Marie Devoisselle
- Institut Charles Gerhardt, UMR 5253 CNRS/ENSCM/UM, 8 rue de l'Ecole Normale, 34296, Cedex 5 Montpellier, France
| | - Joël Chopineau
- Institut Charles Gerhardt, UMR 5253 CNRS/ENSCM/UM, 8 rue de l'Ecole Normale, 34296, Cedex 5 Montpellier, France and Université de Nimes Rue Georges Salan, 30000 Nimes, France.
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Nyalosaso JL, Rascol E, Pisani C, Dorandeu C, Dumail X, Maynadier M, Gary-Bobo M, Kee Him JL, Bron P, Garcia M, Devoisselle JM, Prat O, Guari Y, Charnay C, Chopineau J. Synthesis, decoration, and cellular effects of magnetic mesoporous silica nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra09017f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of magnetic core@shell nanoparticles with different coatings and the study of their uptake by cells.
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Damiati S, Zayni S, Schrems A, Kiene E, Sleytr UB, Chopineau J, Schuster B, Sinner EK. Inspired and stabilized by nature: ribosomal synthesis of the human voltage gated ion channel (VDAC) into 2D-protein-tethered lipid interfaces. Biomater Sci 2015; 3:1406-13. [DOI: 10.1039/c5bm00097a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The scheme of the cell-free, ribosomal synthesis of a VDAC protein in the presence of an S-layer supported lipid membrane. The VDAC protein is adapted from S. Hiller et al., Science, 2008, 321, 1206–1210.
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Affiliation(s)
- Samar Damiati
- Institute for Synthetic Bioarchitectures
- Department of NanoBiotechnology
- University of Natural Resources and Life Sciences
- Vienna 1190
- Austria
| | - Sonja Zayni
- Institute for Synthetic Bioarchitectures
- Department of NanoBiotechnology
- University of Natural Resources and Life Sciences
- Vienna 1190
- Austria
| | - Angelika Schrems
- Institute for Synthetic Bioarchitectures
- Department of NanoBiotechnology
- University of Natural Resources and Life Sciences
- Vienna 1190
- Austria
| | - Elisabeth Kiene
- Institute for Synthetic Bioarchitectures
- Department of NanoBiotechnology
- University of Natural Resources and Life Sciences
- Vienna 1190
- Austria
| | - Uwe B. Sleytr
- Institute for Biophysics
- Department of NanoBiotechnology
- University of Natural Resources and Life Sciences
- Vienna 1190
- Austria
| | - Joël Chopineau
- Institute Charles Gerhardt
- UMR 5253 CNRS/ENSCM/UM2/UM1
- Montpellier
- France
| | - Bernhard Schuster
- Institute for Synthetic Bioarchitectures
- Department of NanoBiotechnology
- University of Natural Resources and Life Sciences
- Vienna 1190
- Austria
| | - Eva-Kathrin Sinner
- Institute for Synthetic Bioarchitectures
- Department of NanoBiotechnology
- University of Natural Resources and Life Sciences
- Vienna 1190
- Austria
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Perbet S, Bourdeaux D, Sautou V, Pereira B, Chabanne R, Constantin JM, Chopineau J, Bazin JE. A pharmacokinetic study of 48-hour sevoflurane inhalation using a disposable delivery system (AnaConDa®) in ICU patients. Minerva Anestesiol 2014; 80:655-665. [PMID: 24226486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Little is known regarding sevoflurane kinetics and toxicity during long-term sedation of intensive care unit (ICU) patients using the AnaConDa® system. The objective of the present study was to establish a pharmacokinetic description of 48-h sevoflurane administration, and to estimate plasma concentrations of metabolites. METHODS Forty-eight hour sedation with sevoflurane vaporized via an AnaConDa® device, with an end-tidal concentration objective of 1.5% (v/v), was initiated in 12 non-obese patients who did not have hepatic or renal failure but who required sedation for more than 48 h in our ICU. Plasma sevoflurane, hexafluoroisopropanol, and fluoride concentrations were determined over this time period and pharmacokinetic analysis was performed. RESULTS The mean plasma concentration of sevoflurane was 76 mg/L at 24 h and 70 mg/L at 48 h. Wash-out of plasma sevoflurane correlated with a rapid decrease in the mean end-tidal sevoflurane level. The mean free plasma fraction of hexafluoroisopropanol never exceeded 8 mg/mL. The mean fluoride concentration was 0.8 µmol/L on day 0, 51.7 µmol/L on day 1, and 68.1 µmol/L on day 2 (P<0.0001). The distribution volume was 53 L, the elimination constant 2.9 h-1, the transfer constant from compartment 1 to compartment 2 (K1-2) 1.2 h-1, the K2-1 0.26 h-1, the half-life of elimination 3.78 h, and the total clearance 156 L/h. CONCLUSION Following 48 hours of sedation using sevoflurane inhalation administered using an AnaConDa® delivery device, sevoflurane washout was rapid. Plasma fluoride levels accumulated over the study period without apparent nephrotoxicity.
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Affiliation(s)
- S Perbet
- CHU Clermont-Ferrand, Intensive Care Unit, Department of Anesthesiology and Critical Care Medicine, CHU Estaing, Clermont-Ferrand, France -
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El Khoury M, Azzouz H, Chavanieu A, Abdelmalak N, Chopineau J, Awad MK. Isolation and characterization of a new Bacillus thuringiensis strain Lip harboring a new cry1Aa gene highly toxic to Ephestia kuehniella (Lepidoptera: Pyralidae) larvae. Arch Microbiol 2014; 196:435-44. [DOI: 10.1007/s00203-014-0981-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 01/14/2014] [Accepted: 03/21/2014] [Indexed: 11/28/2022]
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Beghdadi M, Fortas H, Belhadi M, Arfi K, Belahrach R, Calle F, Chopineau J. Expérience de trois ans de la stimulation cognitive à domicile en Guadeloupe à propos de 36 patients alzheimers. Rev Neurol (Paris) 2013. [DOI: 10.1016/j.neurol.2013.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bernard L, Sautou V, Bourdeaux D, Chopineau J. [Stability and compatibility of acetaminophen, ketoprofen and amoxicillin in a fail-safe intravenous administration set]. ACTA ACUST UNITED AC 2011; 31:47-52. [PMID: 22152998 DOI: 10.1016/j.annfar.2011.08.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Accepted: 08/01/2011] [Indexed: 10/14/2022]
Abstract
OBJECTIVES Intravenous infusion takes an important place in the current therapy in hospitals and pharmaceutical firms keep improving their infusion medical devices, particularly with the development of an intravenous administration set with an automatic infusion stop. The aim of our study consists in an evaluation of the stability of acetaminophen, ketoprofen and amoxicillin during infusion and stasis of drugs for several hours in the dropper chamber and in the tube of this device. STUDY DESIGN Analytical study. MATERIALS AND METHODS Ten milligram per millilitre acetaminophen (acetaminophen 1 and acetaminophen 2), 1 mg/mL ketoprofen and 20 mg/mL amoxicillin were prepared and infused individually and successively with the intravenous administration set under ambient light and temperature. Collected samples of each drug during the infusion and after 24 hours of stasis in the medical device were monitored by a visual inspection, pH and osmolality assessment and chromatographic analysis of each drug with a validated stability-indicating method. RESULTS Repeated individual perfusions of 10 mg/mL acetaminophen 1 or 1 mg/mL ketoprofen are possible through a fail-safe intravenous administration set, while repeated individual amoxicillin infusions are not because of the unstability of this drug. There is also no problem to infuse successively acetaminophen and ketoprofen through this medical device because these drugs are stable. However, we underlined an incompatibility between acetaminophen 2 and ketoprofen, which advises against the use of intravenous administration set for successive infusions of these two drugs. CONCLUSION Despite the technical innovation of a fail-safe intravenous administration set, we have to stay aware of mixture consequences in intravenous infusion field.
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Affiliation(s)
- L Bernard
- Service de pharmacie, CHU de Clermont-Ferrand, France
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30
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Rossi C, Doumiati S, Lazzarelli C, Davi M, Meddar F, Ladant D, Chopineau J. A tethered bilayer assembled on top of immobilized calmodulin to mimic cellular compartmentalization. PLoS One 2011; 6:e19101. [PMID: 21533059 PMCID: PMC3080411 DOI: 10.1371/journal.pone.0019101] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Accepted: 03/16/2011] [Indexed: 11/18/2022] Open
Abstract
Background Biomimetic membrane models tethered on solid supports are important tools for membrane protein biochemistry and biotechnology. The supported membrane systems described up to now are composed of a lipid bilayer tethered or not to a surface separating two compartments: a ”trans” side, one to a few nanometer thick, located between the supporting surface and the membrane; and a “cis” side, above the synthetic membrane, exposed to the bulk medium. We describe here a novel biomimetic design composed of a tethered bilayer membrane that is assembled over a surface derivatized with a specific intracellular protein marker. This multilayered biomimetic assembly exhibits the fundamental characteristics of an authentic biological membrane in creating a continuous yet fluid phospholipidic barrier between two distinct compartments: a “cis” side corresponding to the extracellular milieu and a “trans” side marked by a key cytosolic signaling protein, calmodulin. Methodology/Principal Findings We established and validated the experimental conditions to construct a multilayered structure consisting in a planar tethered bilayer assembled over a surface derivatized with calmodulin. We demonstrated the following: (i) the grafted calmodulin molecules (in trans side) were fully functional in binding and activating a calmodulin-dependent enzyme, the adenylate cyclase from Bordetella pertussis; and (ii) the assembled bilayer formed a continuous, protein-impermeable boundary that fully separated the underlying calmodulin (trans side) from the above medium (cis side). Conclusions The simplicity and robustness of the tethered bilayer structure described here should facilitate the elaboration of biomimetic membrane models incorporating membrane embedded proteins and key cytoplasmic constituents. Such biomimetic structures will also be an attractive tool to study translocation across biological membranes of proteins or other macromolecules.
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Affiliation(s)
- Claire Rossi
- UMR 6022 CNRS, Université de Technologie de Compiègne, Compiègne, France
| | - Samah Doumiati
- UMR 6022 CNRS, Université de Technologie de Compiègne, Compiègne, France
| | | | - Marilyne Davi
- Institut Pasteur, Unité de Biochimie des Interactions Macromoléculaires, CNRS URA 2185, Paris, France
| | - Fetta Meddar
- UMR 6022 CNRS, Université de Technologie de Compiègne, Compiègne, France
| | - Daniel Ladant
- Institut Pasteur, Unité de Biochimie des Interactions Macromoléculaires, CNRS URA 2185, Paris, France
- * E-mail: (DL); (JC)
| | - Joël Chopineau
- Université de Nîmes, Nîmes, France
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-ENSCM UM2-UM1 Ecole Nationale Supérieure de Chimie, Montpellier, France
- * E-mail: (DL); (JC)
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Ponrouch M, Sautou-Miranda V, Boyer A, Bourdeaux D, Montagner A, Chopineau J. Proton pump inhibitor administration via nasogastric tube in pediatric practice: Comparative analysis with protocol optimization. Int J Pharm 2010; 390:160-4. [DOI: 10.1016/j.ijpharm.2010.01.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Revised: 01/21/2010] [Accepted: 01/26/2010] [Indexed: 11/24/2022]
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Eid M, Rippa S, Castano S, Desbat B, Chopineau J, Rossi C, Béven L. Exploring the membrane mechanism of the bioactive peptaibol ampullosporin a using lipid monolayers and supported biomimetic membranes. J Biophys 2010; 2010:179641. [PMID: 21403824 PMCID: PMC3042626 DOI: 10.1155/2010/179641] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 12/09/2010] [Accepted: 12/20/2010] [Indexed: 05/12/2023]
Abstract
Ampullosporin A is an antimicrobial, neuroleptic peptaibol, the behavior of which was investigated in different membrane mimetic environments made of egg yolk L-α-phosphatidylcholine. In monolayers, the peptaibol adopted a mixed α/3(10)-helical structure with an in-plane orientation. The binding step was followed by the peptide insertion into the lipid monolayer core. The relevance of the inner lipid leaflet nature was studied by comparing ampullosporin binding on a hybrid bilayer, in which this leaflet was a rigid alkane layer, and on supported fluid lipid bilayers. The membrane binding was examined by surface plasmon resonance spectroscopy and the effect on lipid dynamics was explored using fluorescence recovery after photobleaching. In the absence of voltage and at low concentration, ampullosporin A substantially adsorbed onto lipid surfaces and its interaction with biomimetic models was strongly modified depending on the inner leaflet structure. At high concentration, ampullosporin A addition led to the lipid bilayers disruption.
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Affiliation(s)
- Marguerita Eid
- UMR 6022 CNRS Génie Enzymatique et Cellulaire, Université de Technologie de Compiègne, BP 20529, 60205 Compiègne Cedex, France
| | - Sonia Rippa
- UMR 6022 CNRS Génie Enzymatique et Cellulaire, Université de Technologie de Compiègne, BP 20529, 60205 Compiègne Cedex, France
| | - Sabine Castano
- CBMN, Chimie et Biologie des Membranes et des Nanoobjets CNRS, UMR 5248, Université de Bordeaux I, ENITAB, 33607 Pessac, France
| | - Bernard Desbat
- CBMN, Chimie et Biologie des Membranes et des Nanoobjets CNRS, UMR 5248, Université de Bordeaux I, ENITAB, 33607 Pessac, France
| | - Joël Chopineau
- CNRS, UMR 5253 Institut Charles Gerhardt, Université Montpellier 2, Ecole Nationale Supérieure de Chimie de Montpellier, Université Montpellier 1, 34093 Montpellier Cedex, France
- Université de Nîmes, 30000 Nîmes, France
| | - Claire Rossi
- UMR 6022 CNRS Génie Enzymatique et Cellulaire, Université de Technologie de Compiègne, BP 20529, 60205 Compiègne Cedex, France
- *Claire Rossi: and
| | - Laure Béven
- UMR 6022 CNRS Génie Enzymatique et Cellulaire, Université de Technologie de Compiègne, BP 20529, 60205 Compiègne Cedex, France
- INRA, UMR 1090 Génomique Diversité et Pouvoir Pathogène, 33883 Villenave d'Ornon, France
- Université de Bordeaux 2, UMR 1090 Génomique Diversité Pouvoir Pathogène, 33883 Villenave d'Ornon Cedex, France
- *Laure Béven:
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Borel A, Albertini E, Bonnin N, Bontemps C, Boyer A, Chopineau J, Chiambaretta F. 581 Une nouvelle ciclosporine A 1 % et 2 % : toxicité, tolérance et observance. J Fr Ophtalmol 2009. [DOI: 10.1016/s0181-5512(09)73705-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rucart P, Balayssac D, Sautou-Miranda V, Boyer A, Chopineau J. P002 Enquête nationale sur les contrôles des mélanges nutritifs parentéraux fabriqués dans les pharmacies à usage intérieur des centres hospitaliers universitaires. NUTR CLIN METAB 2007. [DOI: 10.1016/s0985-0562(07)78805-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Vaille-Perret E, Tourtauchaux R, Galland F, Levallois S, Bonebeau S, Chopineau J, Jalenques I. Les neuroleptiques dans une unité de psychiatrie pour sujets âgés de plus de 60 ans : étude de leur prescription, règles de bon usage. Annales Médico-psychologiques, revue psychiatrique 2007. [DOI: 10.1016/j.amp.2007.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Rossi C, Chopineau J. Biomimetic tethered lipid membranes designed for membrane-protein interaction studies. Eur Biophys J 2007; 36:955-65. [PMID: 17611752 DOI: 10.1007/s00249-007-0202-y] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Revised: 06/07/2007] [Accepted: 06/11/2007] [Indexed: 11/26/2022]
Abstract
The complexity of the biological membranes restricts their direct investigation at the nanoscale. Lipid bilayer membranes have been developed as a model of biological membranes in order to allow the interaction and insertion of peptides and membrane proteins in a functional manner. Promising models have been developed in the past two decades and tethered bilayer design traduces constant improvement of membrane models. The formation of protein free solid tethered membranes can be achieved by direct vesicle fusion, Langmuir-Blodgett, Langmuir-Schaffer transfers, self assembly of various building blocks such as thiol on gold, silane on quartz, grafting of polymers, as well as ligand receptor recognition. In this review, the current state of different tethered bilayer membrane will be described. We will focus on critical analysis of the main advantages/drawbacks of each kind of model construction and their ability to allow protein incorporation in non-denaturing conditions. Some of the current drawbacks encountered in these biomimetic models can be overcome using an innovative tethered bilayer design based on a reliable and fast formation method. The successful protein incorporation of the Adenylate Cyclase produced by Bordetella pertussis and the voltage dependent anion channel (VDAC) was demonstrated on this model.
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Affiliation(s)
- Claire Rossi
- Max-Planck Institut für Polymerforschung, Ackermannweg 10, 55128, Mainz, Germany
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Abstract
We report on the investigations of the formation of the tethered lipid bilayer by vesicle deposition on amine-functionalized surfaces. The tethered bilayer was created by the deposition of egg-PC vesicles containing 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-poly-(ethyleneglycol)-N-hydroxysuccinimide as anchoring molecules on an amine-coated surface. This approach is an easy route for the formation of a biomimetic-supported membrane. A Doelhert experimental design was applied to determine the conditions leading to the formation of a continuous and defect-free tethered bilayer on different surfaces (gold and glass). Doehlert designs allow modeling of the experimental responses by second-order polynomial equations as a function of experimental factors. Four factors expected to influence bilayer formation were studied: the lipid concentration in the vesicle suspension, the mass percentage of anchoring molecules in the vesicles, the contact time between the vesicles and the surface, and the resting time of the membrane after buffer rinse. The optimization of the membrane preparation parameters was achieved by monitoring lipid assembly formation using surface plasmon resonance spectroscopy on gold and by fluorescence recovery after photobleaching on glass. Three characteristic responses were systematically measured: the bilayer thickness, the lipid diffusion coefficient, and the lipid mobile fraction. The simultaneous inspection of the three characteristics revealed that a restricted experimental domain leads to properties that are in accordance with a bilayer presence. The factors of this domain are a lipid concentration from 0.1 to 1 mg/mL, 4-8% of anchoring molecules in the vesicles, 1-4 h of contact time between vesicles and surface, and 21-24 h of resting time after buffer rinse. Under these conditions, a membrane having a lipid mass per surface between 545 +/- 5 and 590 +/- 10 ng/cm2, a diffusion coefficient of between 2.5 +/- 0.3 x 10(-8) and 3.60 +/- 0.5 x 10(-8) cm2/s, and a mobile fraction between 94 +/- 2 and 99 +/- 1% was formed. These findings were confirmed by atomic force microscopy observations, which showed the presence of a continuous and homogeneous bilayer in the determined experimental domain. This formation procedure presents many advantages; it provides an easily obtainable biomimetic membrane model for proteins studies and offers a versatile tethered bilayer because it can be adapted easily to various types of supports.
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Affiliation(s)
- Claire Rossi
- UMR 6022 CNRS, Université de Technologie de Compiègne, BP 20529, 60205 Compiègne, France
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Deniaud A, Rossi C, Berquand A, Homand J, Campagna S, Knoll W, Brenner C, Chopineau J. Voltage-dependent anion channel transports calcium ions through biomimetic membranes. Langmuir 2007; 23:3898-905. [PMID: 17315898 DOI: 10.1021/la063105+] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The mitochondrial outer membrane channel (VDAC), a central player in mitochondria and cell death, was reconstituted in polymer-supported phospholipid bilayers. Highly purified VDAC was first reconstituted in vesicles; channel properties and NADH-ferricyanide reductase activity were ascertained before deposition onto solid substrates. 1-Palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine/1,2-distearoyl-sn-glycero-3-phosphoethanolamine-poly(ethylene glycol)-N-hydroxysuccinimide mixed vesicles containing VDAC were linked onto amine-grafted surfaces (glass and gold) and disrupted to form a VDAC-containing polymer-tethered planar bilayer. Surface plasmon spectroscopy, fluorescence microscopy, and atomic force microscopy measurements ascertained the membrane thickness, fluidity, and continuity. VDAC reconstituted in bilayers efficiently transported calcium ions and was modulable by two channel blockers, 4,4'-diisothiocyanatostilbene-2,2'-disulfonic acid and l-glutamate. The novel setup may allow the study of the assembly of a polyprotein complex centered on VDAC and its role in mitochondrial biology, calcium fluxes, and apoptosis.
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Affiliation(s)
- Aurélien Deniaud
- CNRS UMR 8159, Laboratoire de Génétique et Biologie Cellulaire, Université de Versailles/St Quentin, 45 Avenue des Etats-Unis, 78035 Versailles, France
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Messaouik D, Sautou-Miranda V, Bagel-Boithias S, Chopineau J. Comparative study and optimisation of the administration mode of three proton pump inhibitors by nasogastric tube. Int J Pharm 2005; 299:65-72. [PMID: 15990258 DOI: 10.1016/j.ijpharm.2005.04.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2004] [Revised: 04/23/2005] [Accepted: 04/23/2005] [Indexed: 10/25/2022]
Abstract
Patients in intensive care often develop stress-induced ulcers. As a preventive measure, proton pump inhibitors (PPIs) are administered by nasogastric tube. However, some PPIs can block the tube. The aim of this study was to compare the behaviour of three PPIs (omeprazole, lanzoprazole and esomeprazole) during the transit of the granules through the tube and to optimise their modes of administration. For each IPP, the experiment was designed to study the influence of four variables: the tube material (silicone or polyurethane), the solvent used to dilute the granules (water or apple juice), the mode of administration (in two or three doses) and the rinse volume (10 or 20 ml). We counted the granules before transit and at the tube outlet, and assayed the active drug ingredient by UV spectrometry. The assay showed complete transit of esomeprazole through the tube, but average losses of omeprazole and lanzoprazole of 39 and 33%, respectively, were observed. No significant improvement was obtained by the variables 'diluent' and 'mode of administration'. The variable 'rinse' had a significant influence. For lanzoprazole, a polyurethane tube allowed recovery of on average 86% of the active ingredient. Esomeprazole is thus the choice PPI for the treatment of patients by nasogastric tube. Using a polyurethane tube and a rinse volume of 20 ml, the administration of lanzoprazole by tube can be considered. Use of omeprazole is not recommended because none of the modes of administration tested ensured that a sufficient concentration of active ingredient reached the stomach.
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Affiliation(s)
- D Messaouik
- Service Pharmacie, Hôpital G. Montpied, Rue Montalembert, BP69, 63003 Clermont-Ferrand, France
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40
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Rossi C, Homand J, Bauche C, Hamdi H, Ladant D, Chopineau J. Differential mechanisms for calcium-dependent protein/membrane association as evidenced from SPR-binding studies on supported biomimetic membranes. Biochemistry 2004; 42:15273-83. [PMID: 14690437 DOI: 10.1021/bi035336a] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, two different types of supported biomimetic membranes were designed to study the membrane binding properties of two different proteins that both interact with cellular membranes in a calcium-dependent manner. The first one, neurocalcin, is a member of a subfamilly of EF-hand calcium-binding proteins that exhibit a calcium-myristoyl switch. The second protein is a bacterial toxin, the adenylate cyclase produced by Bordetella pertussis, the causative agent of whooping cough. The biomimetic membranes constructed in this study were either hybrid bilayer membranes or polymer-tethered membranes. Hemimembrane formation was obtained in two steps: a monolayer of 1-octadecanethiol or octadecyltrichlorosilane was self-assembled on top of the gold or glass surface, respectively, and then the egg-phosphatidyl choline (PC) vesicle fused on the hydrophobic alkyl layer. Polymer-tethered membranes on solid support were obtained using N-hydroxysuccinimide (NHS)-terminated-poly(ethyleneglycol) (PEG)-phospholipids as anchoring molecules. Egg-PC/1,2-distearoyl-sn-glycero-3-phospho-ethanolamine-poly(ethyleneglycol)-N-hydroxy-succinimide (DSPE-PEG-NHS) mixture liposomes were injected on the top of an amine grafted surface (cysteamine-coated gold or silanized glass); vesicles were linked to the surface and disrupted, leading to the formation of a bilayer. The biomimetic membrane constructions were followed by surface plasmon spectroscopy, while membrane fluidity and continuity were observed by fluorescence microscopy. Protein/membrane binding properties were determined by resonance surface plasmon measurements. The tethered bilayer, designed here, is very versatile as it can be adapted easily to different types of support. The results demonstrate the potentialities of such polymer-tethered artificial membranes for the study of proteins that insert into biological membranes such as toxins and/or integral membrane proteins.
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Affiliation(s)
- Claire Rossi
- UMR 6022 CNRS Université de Technologie de Compiègne, BP 20529, 60205 Compiègne Cedex, France
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42
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Abstract
For the treatment of certain eye infections, ophthalmic solutions 'laced' with 25 mg/ml vancomycin are sometimes prepared. Their physical and chemical stability and the maintenance of their sterility were studied after deep freezing at -20 +/- 2 degrees C and thawing, followed or not by refrigeration for 48 h at 4 +/- 2 degrees C. Physical and chemical analysis comprised visual inspection turbidity, determination of pH and osmolality, and assay of vancomycin by high performance liquid chromatography with ultraviolet detection. For microbiological analysis a 25 mg/ml vancomycin ophthalmic solution was filtered through two membranes and cultured on trypticase-soy and Sabouraud-glucose solid media. Any colonies were then counted. These physical, chemical and microbiological analyses demonstrated the stability of 25 mg/ml vancomycin ophthalmic solutions in 5% glucose deep frozen at -20 +/- 2 degrees C for 3 months. The vancomycin concentration varied by no more than 5% of the initial concentration, and no breakdown product was evidenced. Neither pH (mean=3.8 +/- 0.1) nor osmolality (mean=318.3 +/- 5.6 mOsm/kg) varied significantly, and remained compatible with intraocular administration. No particle or bacterial combination was found in the course of the study. The thawing procedure (at ambient temperature or under warm running water from a tap) did not modify the stability of the eye drops. Likewise, storage in a refrigerator for 48 h after thawing did not modify stability. The advantage of storing vancomycin 25 mg/ml ophthalmic solutions for 3 months in deep freeze is that a stock of chemically and microbiologically controlled preparations can be held ready for administration to patients, thereby allowing prompter dispensing, as the eye drops are not made up extemporaneously, while the improved control over production ensures that patients receive solutions of constant quality, as every batch prepared is systematically inspected.
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Affiliation(s)
- V Sautou-Miranda
- Laboratoire de Pharmacie Clinique et Biotechnique, Faculté de Pharmacie, BP38, Place Henri Dunant, 63001, Clermont-Ferrand Cedex, France
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43
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Béven L, Adenier H, Kichenama R, Homand J, Redeker V, Le Caer JP, Ladant D, Chopineau J. Ca2+-myristoyl switch and membrane binding of chemically acylated neurocalcins. Biochemistry 2001; 40:8152-60. [PMID: 11434785 DOI: 10.1021/bi010188e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Neurocalcin is a member of a novel family of neuronal calcium sensors that belongs to the superfamily of EF-hand Ca(2+)-binding proteins. Neurocalcin is myristoylated on its N-terminus in vivo and can associate with biological membranes in a calcium and myristoyl-dependent manner. This process known as "Ca(2+)-myristoyl switch" has been best described for the photoreceptor specific protein, recoverin, as well as for several other neuronal calcium sensors. Here, we used reversed micelles to chemically acylate nonmyristoylated neurocalcin at its N-terminus with fatty acids of different lengths (from C12 to C16). This approach allowed us to prepare neurocalcin derivatives in which a single fatty acid is selectively linked to the N-terminal glycine of the polypeptide chain through an amide bond. The membrane binding properties of the monoacylated neurocalcins were then examined by cosedimentation with phospholipid vesicles and direct binding to lipid monolayers by surface plasmon resonance spectroscopy (Biacore). Our results show that neurocalcins monoacylated with lauric, myristic, or palmitic acid were able to associate with membrane in a calcium-dependent manner. This indicates that the Ca(2+)-myristoyl switch can function with different lipid moieties and is not strictly restricted to myristate. The ability to modify at will the fatty acid linked to the N-terminal glycine should be useful to analyze the contribution of the fatty acid moiety to the biological function of this family of neuronal calcium sensors.
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Affiliation(s)
- L Béven
- UMR 6022 CNRS, Université de Technologie de Compiègne, BP 20529, 60205 Compiègne Cedex, France
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Gellis C, Sautou-Miranda V, Arvouet A, Vasson MP, Chopineau J. Stability of methylprednisolone sodium succinate in pediatric parenteral nutrition mixtures. Am J Health Syst Pharm 2001; 58:1139-42. [PMID: 11449858 DOI: 10.1093/ajhp/58.12.1139] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C Gellis
- Laboratoire de Pharmacie Clinique, UFR Pharmacie, Place Henri Dunant, 63001 Clermont-Ferrard, France
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45
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Abstract
Intracellular proteins of eukaryotic cells are frequently covalently modified by the addition of long chain fatty acids. These modifications are thought to allow otherwise soluble proteins to associate with membranes by lipid-lipid based hydrophobic interactions. The purpose of this work was to quantify the effect of acyl chain length on hydrophobic interactions between acylated proteins and phospholipid monolayers. The binding of an artificially acylated model protein to electrically neutral phospholipids was studied by surface plasmon resonance, using BIACORE. Kinetic rates for the binding of bovine pancreatic ribonuclease A (RNase A), monoacylated on its N-terminal lysine with fatty acids of 10, 12, 14, 16 or 18 carbon atoms, to phospholipids on hydrophobic sensor chips, were measured. Unlike unmodified ribonuclease, acylated RNase A bound to the phospholipids, and the association level increased with the acyl chain length to reach a maximum for C16. Reproducible kinetics were obtained which did not fit a 1:1 Langmuir model but rather a two-step binding profile.
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Affiliation(s)
- M O Roy
- CNRS UMR 9955 UMI INSERM U414 Centre de Biochimie Structurale, Montpellier, France
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Minet-Quinard R, Moinard C, Walrand S, Villié F, Normand B, Vasson MP, Chopineau J, Cynober L. Induction of a catabolic state in rats by dexamethasone: dose or time dependency? JPEN J Parenter Enteral Nutr 2000; 24:30-6. [PMID: 10638469 DOI: 10.1177/014860710002400130] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Daily injections of dexamethasone (DEX) given to adult rats are a recognized but nonstandardized model of stress. The aim of this work was to establish a reproducible and accurate model of stress in adult rats by chronic injection of DEX in order to standardize it. For this purpose, the effect of the duration of treatment and the effect of DEX dose were tested. To help understand the mechanisms of the catabolic effect of DEX, the study was extended to the metabolism of glutamine (GLN). In experiment 1, 60 male Sprague-Dawley rats (3 months old) were divided into 8 groups of 6 rats: groups G3, G5, G7, and G9 received 1.50 mg/kg/d of DEX by intraperitoneal (i.p.) injection for 3, 5, 7, or 9 days, respectively. Groups G3PF, G5PF, G7PF, or G9PF were pair-fed to groups G3, G5, G7, or G9, respectively. Group AL (n = 12) was healthy rats fed ad libitum. RESULTS In treated rats, nitrogen balance reached its lowest value at day 5. After 9 days treatment by DEX, the catabolic state was reduced. An increase in GLN-synthetase activity and a decrease in muscle GLN content were related to DEX per se not to DEX-induced anorexia. In experiment 2, 25 rats were divided into 5 groups of 5 animals. Groups G0.75, G1.50, and G2.50 received 0.75, 1.50, and 2.50 mg/kg/d, respectively, of DEX by i.p. injection for 5 days. Group PF was pair-fed to group G2.50 and group AL was control rats. RESULTS DEX induced a decrease in nitrogen balance that was dose-independent. GLN-synthetase activity was increased maximally in gastrocnemius by 0.75 mg/kg. CONCLUSIONS Five days of treatment by DEX and a dose of 0.75 mg/kg/d induced a marked catabolic state.
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Affiliation(s)
- R Minet-Quinard
- Department of Biochemistry, Molecular Biology, and Nutrition, Pharmacy School, Clermont Ferrand, France
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Minet-Quinard R, Moinard C, Villie F, Walrand S, Vasson MP, Chopineau J, Cynober L. Kinetic impairment of nitrogen and muscle glutamine metabolisms in old glucocorticoid-treated rats. Am J Physiol 1999; 276:E558-64. [PMID: 10070024 DOI: 10.1152/ajpendo.1999.276.3.e558] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aged rats are more sensitive to injury, possibly through an impairment of nitrogen and glutamine (Gln) metabolisms mediated by glucocorticoids. We studied the metabolic kinetic response of adult and old rats during glucocorticoid treatment. The male Sprague-Dawley rats were 24 or 3 mo old. Both adult and old rats were divided into 7 groups. Groups labeled G3, G5, and G7 received, by intraperitoneal injection, 1.50 mg/kg of dexamethasone (Dex) for 3, 5, and 7 days, respectively. Groups labeled G3PF, G5PF, and G7PF were pair fed to the G3, G5, or G7 groups and were injected with an isovolumic solution of NaCl. One control group comprised healthy rats fed ad libitum. The response to aggression induced specifically by Dex (i.e., allowing for variations in pair-fed controls) appeared later in the aged rats (decrease in nitrogen balance from day 1 in adults but only from day 4 in old rats). The adult rats rapidly adapted to Dex treatment, whereas the catabolic state worsened until the end of treatment in the old rats. Gln homeostasis was not maintained in the aged rats; despite an early increase in muscular Gln synthetase activity, the Gln pool was depleted. These results suggest a kinetic impairment of both nitrogen and muscle Gln metabolisms in response to Dex with aging.
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Affiliation(s)
- R Minet-Quinard
- Department of Biochemistry, Molecular Biology, and Nutrition, Pharmacy School, 63 000 Clermont-Ferrand, France
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48
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Sautou-Miranda V, Brigas F, Vanheerswynghels S, Chopineau J. Compatibility of paclitaxel in 5% glucose solution with ECOFLAC low-density polyethylene containers-stability under different storage conditions. Int J Pharm 1999; 178:77-82. [PMID: 10205627 DOI: 10.1016/s0378-5173(98)00364-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The compatibility of paclitaxel with low-density polyethylene containers (ECOFLAC) was studied under different temperature and light conditions. Solutions of 0.4 and 1.2 mg/ml of paclitaxel in 5% glucose solution were prepared, put into ECOFLAC containers and stored: (i) at ambient temperature (20-25 degrees C) and in ambient light; (ii) at ambient temperature in the dark; and (iii) at +4 degrees C in the dark. Paclitaxel was assayed by high-performance liquid chromatography after visual inspection of the solutions. The results show that solutions of TAXOL in 5% glucose should not be stored for more than 5 days in glass or ECOFLAC containers because a whitish precipitate tends to form, lowering the paclitaxel concentration. The decrease in the paclitaxel concentration observed after chromatographic analysis ranged very widely (from 12 to 83% of the initial concentration). However solutions of TAXOL diluted in 5% glucose was stable for 5 days in ECOFLAC containers under all the storage conditions tested. These additive-free low-density polyethylene containers offer the advantage of not releasing DEHP into the paclitaxel solutions.
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Affiliation(s)
- V Sautou-Miranda
- Laboratoire de Pharmacie Clinique et Biotechnique, UFR Pharmacie, Clermont-FD, France
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49
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Chopineau J, Robert S, Fénart L, Cecchelli R, Lagoutte B, Paitier S, Dehouck MP, Domurado D. Monoacylation of ribonuclease A enables its transport across an in vitro model of the blood-brain barrier. J Control Release 1998; 56:231-7. [PMID: 9801446 DOI: 10.1016/s0168-3659(98)00091-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
A major challenge in correcting disorders affecting the central nervous system is to induce blood-brain barrier (BBB) crossing of exogenous biological compounds such as proteins or specific nucleic acid sequences. Fatty acids, due to their high membrane affinity and low toxicity, are good potential candidates to promote this barrier crossing when covalently bound to proteins. In this paper, we report that regiospecific monoacylation of ribonuclease A (RNase A) enables its transport across an in vitro model of the BBB. Myristoylated, palmitoylated and stearoylated RNases A were prepared using reversed micelles as microreactors. All the purified acylated RNases A kept their original enzymatic activity. A single fatty acid moiety was linked to RNase A through the alpha-amino group of its N-terminal lysine as shown by powerful analytical techniques. The ability of monoacylated RNases A to cross an in vitro model of the BBB is strictly dependent on the acyl chain length, which must be at least 16 carbon atoms long.
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Affiliation(s)
- J Chopineau
- Laboratoire de Technologie Enzymatique, UPRESA 6022 CNRS, Université de Technologie de Compiègne, BP 20529, 60205, Compiègne cedex, France
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Carion-Taravella B, Lesieur S, Ollivon M, Chopineau J. Enzyme-Mediated Formation of Vesicles from DPPC−Dodecyl Maltoside Mixed Micelles. J Am Chem Soc 1998. [DOI: 10.1021/ja980400a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Brigitte Carion-Taravella
- Contribution from the Laboratoire de Technologie Enzymatique, CNRS UPRES A 6022, 60205 Compiègne, France, and Equipe Physicochimie des Systèmes Polyphasés, CNRS URA 1218, 92296 Châtenay-Malabry, France
| | - Sylviane Lesieur
- Contribution from the Laboratoire de Technologie Enzymatique, CNRS UPRES A 6022, 60205 Compiègne, France, and Equipe Physicochimie des Systèmes Polyphasés, CNRS URA 1218, 92296 Châtenay-Malabry, France
| | - Michel Ollivon
- Contribution from the Laboratoire de Technologie Enzymatique, CNRS UPRES A 6022, 60205 Compiègne, France, and Equipe Physicochimie des Systèmes Polyphasés, CNRS URA 1218, 92296 Châtenay-Malabry, France
| | - Joël Chopineau
- Contribution from the Laboratoire de Technologie Enzymatique, CNRS UPRES A 6022, 60205 Compiègne, France, and Equipe Physicochimie des Systèmes Polyphasés, CNRS URA 1218, 92296 Châtenay-Malabry, France
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