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Guen YL, Delecourt G, Gall TL, Du H, Illy N, Huin C, Bennevault V, Midoux P, Montier T, Guégan P. Neutral Block Copolymer Assisted Gene delivery using Hydrodynamic Limb Vein Injection. Macromol Biosci 2024:e2300568. [PMID: 38512438 DOI: 10.1002/mabi.202300568] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/13/2024] [Indexed: 03/23/2024]
Abstract
Three different amphiphilic block copolymer families were synthesized to investigate new opportunities to enhance gene delivery via Hydrodynamic Limb Vein (HLV) injections. First a polyoxazoline-based family containing mostly one poly(2-methyl-2-oxazoline) (PMeOx) block and a second block POx with an ethyl (EtOx), isopropyl (iPrOx) or phenyl substituent (PhOx) has been synthesized. Then an ABC poly(2-ethyl-2-oxazoline)-b-poly(2-n-propyl-2-oxazoline)-b-poly(2-methyl-2-oxazoline) triblock copolymer was synthesized, with a thermosensitive middle block. Finally, polyglycidol-b-polybutylenoxide-b-polyglycidol copolymers with various molar masses and amphiphilic balance were produced. The simple architecture of neutral amphiphilic triblock copolymer is not sufficient to obtain enhanced in vivo gene transfection. Double or triple amphiphilic neutral block copolymers are improving the in vivo transfection performances through HLV administration as far as a block having an LCST is incorporated in the vector. The molar mass of the copolymer does not seem to affect the vector performances in a significant manner. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yann Le Guen
- Univ Brest, INSERM, EFS, UMR 1078, GGB-GTCA Team, Brest, F-29200, France
- CHU de Brest, Service de Génétique Médicale et de Biologie de la Reproduction, Centre de Référence des Maladies Rares Maladies Neuromusculaires, Brest, 29200, France
| | - Gwendoline Delecourt
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne University, UMR 8232 CNRS, Paris, France
| | - Tony Le Gall
- Univ Brest, INSERM, EFS, UMR 1078, GGB-GTCA Team, Brest, F-29200, France
| | - Haiqin Du
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne University, UMR 8232 CNRS, Paris, France
| | - Nicolas Illy
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne University, UMR 8232 CNRS, Paris, France
| | - Cécile Huin
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne University, UMR 8232 CNRS, Paris, France
- University of Evry, Evry, France
| | - Véronique Bennevault
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne University, UMR 8232 CNRS, Paris, France
- University of Evry, Evry, France
| | - Patrick Midoux
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France
| | - Tristan Montier
- Univ Brest, INSERM, EFS, UMR 1078, GGB-GTCA Team, Brest, F-29200, France
- CHU de Brest, Service de Génétique Médicale et de Biologie de la Reproduction, Centre de Référence des Maladies Rares Maladies Neuromusculaires, Brest, 29200, France
| | - Philippe Guégan
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne University, UMR 8232 CNRS, Paris, France
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Du H, Kalem S, Huin C, Illy N, Tresset G, Giacomelli FC, Guégan P. Engineering of ion permeable planar membranes and polymersomes based on β-cyclodextrin-cored star copolymers. J Colloid Interface Sci 2023; 630:465-476. [DOI: 10.1016/j.jcis.2022.09.147] [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] [Received: 07/19/2022] [Revised: 09/09/2022] [Accepted: 09/29/2022] [Indexed: 11/07/2022]
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Huin C, Cronier S, Guégan P, Béringue V, Rezaei H, Noinville S. Conformation-dependent membrane permeabilization by neurotoxic PrP oligomers: The role of the H2H3 oligomerization domain. Arch Biochem Biophys 2020; 692:108517. [PMID: 32738196 DOI: 10.1016/j.abb.2020.108517] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/08/2020] [Accepted: 07/26/2020] [Indexed: 12/11/2022]
Abstract
The relationship between prion propagation and the generation of neurotoxic species and clinical onset remains unclear. Several converging lines of evidence suggest that interactions with lipids promote various precursors to form aggregation-prone states that are involved in amyloid fibrils. Here, we compared the cytotoxicities of different soluble isolated oligomeric constructs from murine full-length PrP and from the restricted helical H2H3 domain with their effects on lipid vesicles. The helical H2H3 domain is suggested to be the minimal region of PrP involved in the oligomerization process. The discrete PrP oligomers of both the full-length sequence and the H2H3 domain have de novo β-sheeted structure when interacting with the membrane. They were shown to permeabilize synthetic negatively charged vesicles in a dose-dependent manner. Restricting the polymerization domain of the full-length PrP to the H2H3 helices strongly diminished the ability of the corresponding oligomers to associate with the lipid vesicles. Furthermore, the membrane impairment mechanism occurs differently for the full-length PrP oligomers and the H2H3 helices, as shown by dye-release and black lipid membrane experiments. The membrane damage caused by the full-length PrP oligomers is correlated to their neuronal toxicity at submicromolar concentrations, as shown by cell culture assays. Although oligomers of synthetic H2H3 could compromise in vitro cell homeostasis, they followed a membrane-disruptive pattern that was different from the full-length oligomers, as revealed by the role of PrPC in cell viability assays.
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Affiliation(s)
- Cécile Huin
- Sorbonne Universités, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005, Paris, France; University of Evry, F-91025, Evry, France
| | - Sabrina Cronier
- UR892, Virologie et Immunologie Moléculaires, Institut National de la Recherche Agronomique (INRA), Jouy-en-Josas, France
| | - Philippe Guégan
- Sorbonne Universités, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005, Paris, France
| | - Vincent Béringue
- UR892, Virologie et Immunologie Moléculaires, Institut National de la Recherche Agronomique (INRA), Jouy-en-Josas, France
| | - Human Rezaei
- UR892, Virologie et Immunologie Moléculaires, Institut National de la Recherche Agronomique (INRA), Jouy-en-Josas, France
| | - Sylvie Noinville
- UR892, Virologie et Immunologie Moléculaires, Institut National de la Recherche Agronomique (INRA), Jouy-en-Josas, France; Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR8233, MONARIS, Université Pierre et Marie Curie, Paris, France.
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4
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Du H, de Oliveira FA, Albuquerque LJC, Tresset G, Pavlova E, Huin C, Guégan P, Giacomelli FC. Polyglycidol-Stabilized Nanoparticles as a Promising Alternative to Nanoparticle PEGylation: Polymer Synthesis and Protein Fouling Considerations. Langmuir 2020; 36:1266-1278. [PMID: 31961691 DOI: 10.1021/acs.langmuir.9b03687] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We herein demonstrate the outstanding protein-repelling characteristic of star-like micelles and polymersomes manufactured from amphiphilic block copolymers made by poly(butylene oxide) (PBO) hydrophobic segments and polyglycidol (PGL) hydrophilic outer shells. Although positively charged proteins (herein modeled by lysozyme) may adsorb onto the surface of micelles and polymersomes where the assemblies are stabilized by short PGL chains (degree of polymerization smaller than 15), the protein adsorption vanishes when the degree of polymerization of the hydrophilic segment (PGL) is higher than ∼20, regardless the morphology. This has been probed by using three different model proteins which are remarkably different concerning molecular weight, size, and zeta potential (bovine serum albumin (BSA), lysozyme, and immunoglobulin G (IgG)). Indeed, the adsorption of the most abundant plasma protein (herein modeled as BSA) is circumvented even by using very short PGL shells due to the highly negative zeta potential of the produced assemblies which presumably promote protein-nanoparticle electrostatic repulsion. The negative zeta potential, on the other hand, enables lysozyme adsorption, and the phenomenon is governed by electrostatic forces as evidenced by isothermal titration calorimetry. Nevertheless, the protein coating can be circumvented by slightly increasing the degree of polymerization of the hydrophilic segment. Notably, the PGL length required to circumvent protein fouling is significantly smaller than the one required for PEO. This feature and the safety concerns regarding the synthetic procedures on the preparation of poly(ethylene oxide)-based amphiphilic copolymers might make polyglycidol a promising alternative toward the production of nonfouling spherical particles.
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Affiliation(s)
- Haiqin Du
- Equipe Chimie des Polymères, Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232) , Sorbonne Université , 75252 Paris , France
| | - Fernando A de Oliveira
- Centro de Ciências Naturais e Humanas , Universidade Federal do ABC , 09210-580 Santo André , Brazil
| | - Lindomar J C Albuquerque
- Centro de Ciências Naturais e Humanas , Universidade Federal do ABC , 09210-580 Santo André , Brazil
| | - Guillaume Tresset
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud , Université Paris-Saclay , 91400 Orsay , France
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry , 162 06 Prague , Czech Republic
| | - Cécile Huin
- Equipe Chimie des Polymères, Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232) , Sorbonne Université , 75252 Paris , France
- Université d'Evry Val d'Essonne, Université Paris-Saclay , 91000 Evry , France
| | - Philippe Guégan
- Equipe Chimie des Polymères, Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232) , Sorbonne Université , 75252 Paris , France
| | - Fernando C Giacomelli
- Equipe Chimie des Polymères, Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232) , Sorbonne Université , 75252 Paris , France
- Centro de Ciências Naturais e Humanas , Universidade Federal do ABC , 09210-580 Santo André , Brazil
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Rasolonjatovo B, Illy N, Bennevault V, Mathé J, Midoux P, Le Gall T, Haudebourg T, Montier T, Lehn P, Pitard B, Cheradame H, Huin C, Guégan P. Temperature‐Sensitive Amphiphilic Non‐Ionic Triblock Copolymers for Enhanced In Vivo Skeletal Muscle Transfection. Macromol Biosci 2020; 20:e1900276. [DOI: 10.1002/mabi.201900276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/30/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Bazoly Rasolonjatovo
- LAMBE, CNRS, Université Evry, CEAUniversité Paris–Saclay 91025 Evry France
- LAMBE, UCPUniversité Paris–Seine 91025 Evry France
| | - Nicolas Illy
- Equipe Chimie des Polymères, Institut Parisien de Chimie Moléculaire, CNRS, Sorbonne Université 4 Place Jussieu 75005 Paris France
| | - Véronique Bennevault
- Equipe Chimie des Polymères, Institut Parisien de Chimie Moléculaire, CNRS, Sorbonne Université 4 Place Jussieu 75005 Paris France
- Université Evry 91025 Evry France
| | - Jérôme Mathé
- LAMBE, CNRS, Université Evry, CEAUniversité Paris–Saclay 91025 Evry France
- LAMBE, UCPUniversité Paris–Seine 91025 Evry France
| | - Patrick Midoux
- Centre de Biophysique MoléculaireCNRS UPR4301 45071 Orléans Cedex 02 France
| | - Tony Le Gall
- Groupe – Transfert de Gènes et Thérapie Génique, UMR 1078 – Génétique, Génomique Fonctionnelle et BiotechnologiesUniversité de Brest, INSERM, CHU de Brest 22 Avenue Camille Desmoulins 29238 Brest Cedex France
| | - Thomas Haudebourg
- CRCINA, INSERMUniversity of Angers, University of Nantes 49000 and 44000 Nantes France
| | - Tristan Montier
- Groupe – Transfert de Gènes et Thérapie Génique, UMR 1078 – Génétique, Génomique Fonctionnelle et BiotechnologiesUniversité de Brest, INSERM, CHU de Brest 22 Avenue Camille Desmoulins 29238 Brest Cedex France
| | - Pierre Lehn
- Groupe – Transfert de Gènes et Thérapie Génique, UMR 1078 – Génétique, Génomique Fonctionnelle et BiotechnologiesUniversité de Brest, INSERM, CHU de Brest 22 Avenue Camille Desmoulins 29238 Brest Cedex France
| | - Bruno Pitard
- CRCINA, INSERMUniversity of Angers, University of Nantes 49000 and 44000 Nantes France
| | - Herve Cheradame
- LAMBE, CNRS, Université Evry, CEAUniversité Paris–Saclay 91025 Evry France
- LAMBE, UCPUniversité Paris–Seine 91025 Evry France
| | - Cécile Huin
- Equipe Chimie des Polymères, Institut Parisien de Chimie Moléculaire, CNRS, Sorbonne Université 4 Place Jussieu 75005 Paris France
- Université Evry 91025 Evry France
| | - Philippe Guégan
- Equipe Chimie des Polymères, Institut Parisien de Chimie Moléculaire, CNRS, Sorbonne Université 4 Place Jussieu 75005 Paris France
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Boufroura H, Plais R, Poyer S, Gaucher A, Marrot J, Clavier G, Legrand FX, Huin C, Guégan P, Prim D, Salpin JY. Helically shaped cation receptor: design, synthesis, characterisation and first application to ion transport. RSC Adv 2020; 10:31670-31679. [PMID: 35520653 PMCID: PMC9056421 DOI: 10.1039/d0ra05519k] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 07/30/2020] [Indexed: 12/22/2022] Open
Abstract
An helicene-like receptor is able to transport K+ across lipid membrane.
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Affiliation(s)
- Hamza Boufroura
- Université Paris-Saclay
- UVSQ
- CNRS
- UMR 8180
- Institut Lavoisier de Versailles
| | - Romain Plais
- Université Paris-Saclay
- UVSQ
- CNRS
- UMR 8180
- Institut Lavoisier de Versailles
| | | | - Anne Gaucher
- Université Paris-Saclay
- UVSQ
- CNRS
- UMR 8180
- Institut Lavoisier de Versailles
| | - Jérome Marrot
- Université Paris-Saclay
- UVSQ
- CNRS
- UMR 8180
- Institut Lavoisier de Versailles
| | | | | | - Cécile Huin
- Sorbonne Université
- CNRS
- Institut Parisien de Chimie Moléculaire
- Equipe Chimie des Polymères
- 75005 Paris
| | - Philippe Guégan
- Sorbonne Université
- CNRS
- Institut Parisien de Chimie Moléculaire
- Equipe Chimie des Polymères
- 75005 Paris
| | - Damien Prim
- Université Paris-Saclay
- UVSQ
- CNRS
- UMR 8180
- Institut Lavoisier de Versailles
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7
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Eskandani Z, Le Gall T, Montier T, Lehn P, Montel F, Auvray L, Huin C, Guégan P. Polynucleotide transport through lipid membrane in the presence of starburst cyclodextrin-based poly(ethylene glycol)s. Eur Phys J E Soft Matter 2018; 41:132. [PMID: 30426391 DOI: 10.1140/epje/i2018-11743-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 10/12/2018] [Indexed: 06/09/2023]
Abstract
Symmetrical cyclodextrin-based 14-arm star polymers with poly(ethylene glycol) PEG branches were synthesized and characterized. Interactions of the star polymers with lipid bilayers were studied by the "black lipid membrane" technique in order to demonstrate the formation of monomolecular artificial channels. The conditions for the insertion are mainly based on dimensions and amphiphilic properties of the star polymers, in particular the molar mass of the water-soluble polymer branches. Translocation of single-strand DNA (ssDNA) through those synthetic nanopores was investigated, and the close dimension between the cross-section of ssDNA and the cyclodextrin cavity led to an energy barrier that slowed down the translocation process.
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Affiliation(s)
- Zahra Eskandani
- LAMBE, Univ Evry, CNRS, CEA, Université Paris-Saclay, 91025, Evry, France
- LAMBE, Université Cergy-Pontoise, Université Paris-Seine, 91025, Evry, France
| | - Tony Le Gall
- INSERM UMR 1078, Faculté de Médecine, Université de Bretagne Occidentale, Université Européenne de Bretagne, 22 avenue Camille Desmoulins, 29238, Brest Cedex 3, France
- Plateforme SynNanoVect, Biogenouest, SFR 148 ScInBioS, Université de Bretagne Occidentale, Faculté de Médecine, 22 avenue Camille Desmoulins, 29238, Brest Cedex 3, France
| | - Tristan Montier
- INSERM UMR 1078, Faculté de Médecine, Université de Bretagne Occidentale, Université Européenne de Bretagne, 22 avenue Camille Desmoulins, 29238, Brest Cedex 3, France
- Plateforme SynNanoVect, Biogenouest, SFR 148 ScInBioS, Université de Bretagne Occidentale, Faculté de Médecine, 22 avenue Camille Desmoulins, 29238, Brest Cedex 3, France
- Laboratoire de génétique moléculaire et d'histocompatibilité, CHRU de Brest, 5 avenue du Maréchal Foch, 29609, Brest Cedex 3, France
- DUMG, Université de Bretagne Occidentale, Faculté de Médecine, 22 avenue Camille Desmoulins, 29238, Brest Cedex 3, France
| | - Pierre Lehn
- INSERM UMR 1078, Faculté de Médecine, Université de Bretagne Occidentale, Université Européenne de Bretagne, 22 avenue Camille Desmoulins, 29238, Brest Cedex 3, France
| | - Fabien Montel
- Matière et Systèmes Complexes, CNRS-UMR 7057, Université Paris-Diderot, 10 rue Alice Domon et Léonie Duquet, 75205, Paris cedex 13, France
| | - Loïc Auvray
- Matière et Systèmes Complexes, CNRS-UMR 7057, Université Paris-Diderot, 10 rue Alice Domon et Léonie Duquet, 75205, Paris cedex 13, France
| | - Cécile Huin
- LAMBE, Univ Evry, CNRS, CEA, Université Paris-Saclay, 91025, Evry, France
- LAMBE, Université Cergy-Pontoise, Université Paris-Seine, 91025, Evry, France
| | - Philippe Guégan
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 place Jussieu, F-75005, Paris, France.
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Faye I, Huin C, Illy N, Bennevault V, Guégan P. β-Cyclodextrin-Based Star Amphiphilic Copolymers: Synthesis, Characterization, and Evaluation as Artificial Channels. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ibrahima Faye
- Team Chimie des Polymères, Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Sorbonne Université; 4 Place Jussieu, 75005 Paris France
- LAMBE, CEA, CNRS; University of Evry; University of Paris-Saclay; 91025 Evry France
| | - Cécile Huin
- LAMBE, CEA, CNRS; University of Evry; University of Paris-Saclay; 91025 Evry France
| | - Nicolas Illy
- Team Chimie des Polymères, Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Sorbonne Université; 4 Place Jussieu, 75005 Paris France
| | - Véronique Bennevault
- Team Chimie des Polymères, Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Sorbonne Université; 4 Place Jussieu, 75005 Paris France
- University of Evry; 91025 Evry France
| | - Philippe Guégan
- Team Chimie des Polymères, Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Sorbonne Université; 4 Place Jussieu, 75005 Paris France
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Mamad-Hemouch H, Bacri L, Huin C, Przybylski C, Thiébot B, Patriarche G, Jarroux N, Pelta J. Versatile cyclodextrin nanotube synthesis with functional anchors for efficient ion channel formation: design, characterization and ion conductance. Nanoscale 2018; 10:15303-15316. [PMID: 30069556 DOI: 10.1039/c8nr02623h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biomimetic ion channels with different materials have been extensively designed to study the dynamics in a confined medium. These channels allow the development of several applications, such as ultra-fast sequencing and biomarker detection. When considering their synthesis, the use of cheap, non-cytotoxic and readily available materials is an increasing priority. Cyclodextrins, in supramolecular architectures, are widely utilized for pharmaceutical and biotechnological applications. Recent work has shown that short nanotubes (NTs) based on alpha-cyclodextrin (α-CD) assemble transient ion channels into membranes without cytotoxicity. In this study, we probe the influence of new cyclodextrin NT structural parameters and chemical modifications on channel formation, stability and electrical conductance. We report the successful synthesis of β- and γ-cyclodextrin nanotubes (β-CDNTs and γ-CDNTs), as evidenced by mass-spectrometry and high-resolution transmission electron microscopy. CDNTs were characterized by their length, diameter and number of CDs. Two hydrophobic groups, silylated or vinylated, were attached along the γ-CDNTs, improving the insertion time into the membrane. All NTs synthesized form spontaneous biomimetic ion channels. The hydrophobic NTs exhibit higher stability in membranes. Electrophysiological measurements show that ion transport is the main contribution of NT conductance and that the ion energy penalty for the entry into these NTs is similar to that of biological channels.
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Affiliation(s)
- Hajar Mamad-Hemouch
- LAMBE, Université Evry, CNRS, CEA, Université Paris-Saclay, 91025, Evry, France.
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10
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Boufroura H, Poyer S, Gaucher A, Huin C, Salpin JY, Clavier G, Prim D. Topology and Electronic Density Driven Generation of Alkali Cation Complexes. Chemistry 2018; 24:8656-8663. [PMID: 29577466 DOI: 10.1002/chem.201800707] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Indexed: 01/25/2023]
Abstract
The formation and characterization of K+ and Cs+ complexes originating from the cooperativity of three non-covalent interactions is explored. The tridimensional preorganization of the naphthothiophene platform displays a favorable well-defined bay region combining a π fragment and a carbonyl moiety flanking a central sulfur atom. A joint theoretical and experimental infrared multiple photon dissociation (IRMPD) study allowed deciphering the key contribution of the orthogonal phenyl fragment to the elaboration of alkali metal complexes. In combination with S and CO interactions, the π-cation interaction significantly enhances the binding energies of naphthothiophene derivatives.
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Affiliation(s)
- Hamza Boufroura
- ILV, UVSQ, CNRS, Université Paris-Saclay, 78035, Versailles, France
| | - Salomé Poyer
- LAMBE, Univ Evry, CNRS, CEA, Université Paris-Saclay, 91025, Evry, France.,LAMBE, U-Cergy, Université Paris-Seine, 91025, Evry, France
| | - Anne Gaucher
- ILV, UVSQ, CNRS, Université Paris-Saclay, 78035, Versailles, France
| | - Cécile Huin
- LAMBE, Univ Evry, CNRS, CEA, Université Paris-Saclay, 91025, Evry, France.,LAMBE, U-Cergy, Université Paris-Seine, 91025, Evry, France
| | - Jean-Yves Salpin
- LAMBE, Univ Evry, CNRS, CEA, Université Paris-Saclay, 91025, Evry, France.,LAMBE, U-Cergy, Université Paris-Seine, 91025, Evry, France
| | - Gilles Clavier
- PPSM, ENS Cachan, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Damien Prim
- ILV, UVSQ, CNRS, Université Paris-Saclay, 78035, Versailles, France
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11
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Gonçalves C, Gomez JP, Même W, Rasolonjatovo B, Gosset D, Nedellec S, Hulin P, Huin C, Le Gall T, Montier T, Lehn P, Pichon C, Guégan P, Cheradame H, Midoux P. Curcumin/poly(2-methyl-2-oxazoline-b-tetrahydrofuran-b-2-methyl-2-oxazoline) formulation: An improved penetration and biological effect of curcumin in F508del-CFTR cell lines. Eur J Pharm Biopharm 2017; 117:168-181. [DOI: 10.1016/j.ejpb.2017.04.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/14/2017] [Accepted: 04/13/2017] [Indexed: 01/29/2023]
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Mamad-Hemouch H, Ramoul H, Abou Taha M, Bacri L, Huin C, Przybylski C, Oukhaled A, Thiébot B, Patriarche G, Jarroux N, Pelta J. Biomimetic Nanotubes Based on Cyclodextrins for Ion-Channel Applications. Nano Lett 2015; 15:7748-7754. [PMID: 26471761 DOI: 10.1021/acs.nanolett.5b03938] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Biomimetic membrane channels offer a great potential for fundamental studies and applications. Here, we report the fabrication and characterization of short cyclodextrin nanotubes, their insertion into membranes, and cytotoxicity assay. Mass spectrometry and high-resolution transmission electron microscopy were used to confirm the synthesis pathway leading to the formation of short nanotubes and to describe their structural parameters in terms of length, diameter, and number of cyclodextrins. Our results show the control of the number of cyclodextrins threaded on the polyrotaxane leading to nanotube synthesis. Structural parameters obtained by electron microscopy are consistent with the distribution of the number of cyclodextrins evaluated by mass spectrometry from the initial polymer distribution. An electrophysiological study at single molecule level demonstrates the ion channel formation into lipid bilayers, and the energy penalty for the entry of ions into the confined nanotube. In the presence of nanotubes, the cell physiology is not altered.
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Affiliation(s)
- Hajar Mamad-Hemouch
- Université d'Evry-Val-d'Essonne, LAMBE, UMR CNRS 8587 , bd F. Mitterrand, 91025 Evry, France
| | - Hassen Ramoul
- Université d'Evry-Val-d'Essonne, LAMBE, UMR CNRS 8587 , bd F. Mitterrand, 91025 Evry, France
| | - Mohammad Abou Taha
- Université d'Evry-Val-d'Essonne, LAMBE, UMR CNRS 8587 , bd F. Mitterrand, 91025 Evry, France
| | - Laurent Bacri
- Université d'Evry-Val-d'Essonne, LAMBE, UMR CNRS 8587 , bd F. Mitterrand, 91025 Evry, France
| | - Cécile Huin
- Université d'Evry-Val-d'Essonne, LAMBE, UMR CNRS 8587 , bd F. Mitterrand, 91025 Evry, France
| | - Cédric Przybylski
- Université d'Evry-Val-d'Essonne, LAMBE, UMR CNRS 8587 , bd F. Mitterrand, 91025 Evry, France
| | - Abdelghani Oukhaled
- Université de Cergy Pontoise, LAMBE, UMR CNRS 8587 , 2 avenue A. Chauvin, 95302 Cergy Pontoise, France
| | - Bénédicte Thiébot
- Université de Cergy Pontoise, LAMBE, UMR CNRS 8587 , 2 avenue A. Chauvin, 95302 Cergy Pontoise, France
| | | | - Nathalie Jarroux
- Université d'Evry-Val-d'Essonne, LAMBE, UMR CNRS 8587 , bd F. Mitterrand, 91025 Evry, France
| | - Juan Pelta
- Université d'Evry-Val-d'Essonne, LAMBE, UMR CNRS 8587 , bd F. Mitterrand, 91025 Evry, France
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Bennevault V, Huin C, Guégan P, Evgeniya K, Qiu XP, Winnik FM. Temperature sensitive supramolecular self assembly of per-6-PEO-β-cyclodextrin and α,ω-di-(adamantylethyl)poly(N-isopropylacrylamide) in water. Soft Matter 2015; 11:6432-6443. [PMID: 26179328 DOI: 10.1039/c5sm01293g] [Citation(s) in RCA: 5] [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: 06/04/2023]
Abstract
The host/guest interactions in water of a star polymer consisting of a β-cyclodextrin (β-CD) core bearing six poly(ethylene oxide) arms linked to the C6 positions of β-CD (β-CD-PEO7, Mn 5000 g mol(-1)) and α,ω-di-(adamantylethyl)poly(N-isopropylacrylamide) (Ad-PNIPAM-12K, Mn 12,000 g mol(-1)) were studied by 1D and 2D (1)H and (13)C NMR spectroscopy, isothermal calorimetry (ITC), and light scattering (LS). In cold water (T < 26 °C) supramolecular "dumbbell" assemblies, consisting of PNIPAM chains with β-CD/Ad inclusion complexes at each end, formed viaβ-CD-insertion of the terminal Ads through the β-CD secondary face. Light scattering, microcalorimetry (DSC), and DOSY NMR studies indicated that mixed aqueous solutions of β-CD-PEO7 and Ad-PNIPAM-12K undergo a reversible heat-induced phase transition at ∼32 °C, accompanied by a release of a fraction of the Ad-bound β-CD-PEO7 into bulk solution and the formation of aggregated Ad-PNIPAM-12K stabilized by a β-CD-PEO7 shell.
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Affiliation(s)
- V Bennevault
- Université d'Evry Val d'Essonne, 91025 Evry Cedex, France
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14
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Rasolonjatovo B, Gomez JP, Même W, Gonçalves C, Huin C, Bennevault-Celton V, Le Gall T, Montier T, Lehn P, Cheradame H, Midoux P, Guégan P. Poly(2-methyl-2-oxazoline)-b-poly(tetrahydrofuran)-b-poly(2-methyl-2-oxazoline) Amphiphilic Triblock Copolymers: Synthesis, Physicochemical Characterizations, and Hydrosolubilizing Properties. Biomacromolecules 2015; 16:748-56. [DOI: 10.1021/bm5016656] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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)
- Bazoly Rasolonjatovo
- Laboratoire
Analyse et Modélisation pour la Biologie et l’Environnement, UMR 8587 UEVE-CNRS-CEA, Evry, France
| | - Jean-Pierre Gomez
- Centre
de Biophysique Moléculaire, CNRS UPR4301 and Université d’Orléans, France
| | - William Même
- Centre
de Biophysique Moléculaire, CNRS UPR4301 and Université d’Orléans, France
| | - Cristine Gonçalves
- Centre
de Biophysique Moléculaire, CNRS UPR4301 and Université d’Orléans, France
| | - Cécile Huin
- Laboratoire
Analyse et Modélisation pour la Biologie et l’Environnement, UMR 8587 UEVE-CNRS-CEA, Evry, France
| | - Véronique Bennevault-Celton
- Laboratoire
Analyse et Modélisation pour la Biologie et l’Environnement, UMR 8587 UEVE-CNRS-CEA, Evry, France
| | - Tony Le Gall
- INSERM
U613, Hôpital Morvan - CHU Brest - I3S, Brest, France
| | - Tristan Montier
- INSERM
U613, Hôpital Morvan - CHU Brest - I3S, Brest, France
| | - Pierre Lehn
- INSERM
U613, Hôpital Morvan - CHU Brest - I3S, Brest, France
| | - Hervé Cheradame
- Laboratoire
Analyse et Modélisation pour la Biologie et l’Environnement, UMR 8587 UEVE-CNRS-CEA, Evry, France
| | - Patrick Midoux
- Centre
de Biophysique Moléculaire, CNRS UPR4301 and Université d’Orléans, France
| | - Philippe Guégan
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, IPCM, Chimie des Polyméres, F-75005, Paris, France
- CNRS, UMR 8232, IPCM, Chimie des Polyméres, F-75005, Paris, France
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15
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El Ghoul Y, Renia R, Faye I, Rassou S, Badi N, Bennevault-Celton V, Huin C, Guégan P. Biomimetic artificial ion channels based on beta-cyclodextrin. Chem Commun (Camb) 2014; 49:11647-9. [PMID: 24185371 DOI: 10.1039/c3cc47071g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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
Star polymers based on β-cyclodextrin were synthesized by a ''click-chemistry'' process and characterized by NMR, SEC and BLM. The resulting triazole functional groups create, at a specific pH range, electrostatic hindrance between pores inserted in lipid bilayers, preventing their aggregation, allowing formation of well-defined isolated unitary pores and mimicking biological natural channels.
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Affiliation(s)
- Yassine El Ghoul
- LAMBE, UMR8587, UEVE-CNRS-CEA, Bld François Mitterrand, 91025 Evry, France.
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16
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Huin C, Eskandani Z, Badi N, Farcas A, Bennevault-Celton V, Guégan P. Anionic ring-opening polymerization of ethylene oxide in DMF with cyclodextrin derivatives as new initiators. Carbohydr Polym 2013; 94:323-31. [PMID: 23544545 DOI: 10.1016/j.carbpol.2012.12.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 12/13/2012] [Accepted: 12/26/2012] [Indexed: 10/27/2022]
Abstract
Anionic polymerization initiated by cyclodextrins suffers from a poor solubility of those derivatives in standard polymerization solvents. The possibility to perform ethylene oxide polymerization initiated by monofunctional initiators (allyl alcohol, 2-methoxyethanol) by living ring opening polymerization in DMF, a good solvent for any CD derivative, was demonstrated by SEC, (1)H and (13)C NMR analyses. The study was extended to the use of native CD as initiator, leading to the synthesis of ill-defined structures, explained by the reactivity scale of the various hydroxyl functions. Two selectively modified CD derivatives are then used to synthesize a new family of star-shaped poly(ethylene oxide) polymers with CD core, having 14 or 21 arms. The polymerization was found to be living and DOSY experiments confirmed the well-defined structures for the synthesized star-polymers.
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Affiliation(s)
- Cécile Huin
- LAMBE, UMR8587 UEVE-CNRS-CEA, Bld Fr. Mitterrand, 91000 Evry, France
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17
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Huin C, Le Gall T, Barteau B, Pitard B, Montier T, Lehn P, Cheradame H, Guégan P. Evidence of DNA transfer across a model membrane by a neutral amphiphilic block copolymer. J Gene Med 2012; 13:538-48. [PMID: 21954109 DOI: 10.1002/jgm.1612] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Neutral amphiphilic triblock copolymers have been shown to be efficient for gene transfection in vivo, especially by direct injection into the muscle. To contribute to a better understanding of the underlying mechanisms, in the present study, we investigated the properties of a poly(ethylene oxide-b-4-vinylpyridine) diblock copolymer as vector for nucleic acid transfer, with the particular aim of shedding some light on a possible mechanism explaining the internalization of DNA by the transfected cells. METHODS Complexation of plasmid DNA with the PEO-b-P4VP diblock copolymer was investigated by ethidium bromide exclusion and gel electrophoresis assays. Interaction of the copolymer with a lipid model membrane was evaluated by electrophysiological assays and quantification of plasmid DNA was performed by quantitative polymerase chain reaction. In vivo luciferase transfection assays were finally performed. RESULTS The diblock copolymer was found to poorly interact with DNA up to a mass ratio (copolymer/DNA) as high as 150. At a concentration of 36 µg/ml, it induced the formation of mainly transient (but sometimes permanent) pores and the formation of those pores allowed the translocation of plasmid DNA across the model membrane. However, only low transgene expression was obtained; the luciferase levels observed with the diblock being of the same order of magnitude as those observed with the corresponding PEO and P4VP homopolymers. CONCLUSIONS These results strongly suggest that gene transfection by neutral block copolymers may involve the formation of cellular pores; in addition, they also highlight that in vivo gene transfection requires the use of adequately soluble block copolymers.
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Affiliation(s)
- Cécile Huin
- LAMBE, UEVE-CNRS-CEA, UMR 8587, Equipe Matériaux Polymères aux Interfaces, Université d'Evry, Evry, France
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18
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Sebai SC, Milioni D, Walrant A, Alves ID, Sagan S, Huin C, Auvray L, Massotte D, Cribier S, Tribet C. Photocontrol of the Translocation of Molecules, Peptides, and Quantum Dots through Cell and Lipid Membranes Doped with Azobenzene Copolymers. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201106777] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Sebai SC, Milioni D, Walrant A, Alves ID, Sagan S, Huin C, Auvray L, Massotte D, Cribier S, Tribet C. Photocontrol of the translocation of molecules, peptides, and quantum dots through cell and lipid membranes doped with azobenzene copolymers. Angew Chem Int Ed Engl 2012; 51:2132-6. [PMID: 22262500 DOI: 10.1002/anie.201106777] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 11/09/2011] [Indexed: 11/12/2022]
Affiliation(s)
- Sarra C Sebai
- Ecole Normale Supérieure, Departement de Chimie, UMR 8640 CNRS-ENS-UPMC, Paris, France
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20
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Pereira G, Huin C, Morariu S, Bennevault-Celton V, Guégan P. Synthesis of Poly(2-methyl-2-oxazoline) Star Polymers with a β-Cyclodextrin Core. Aust J Chem 2012. [DOI: 10.1071/ch12232] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Synthesis of star polymers with a β-cyclodextrin (CD) core was undertaken using the arm-first, then the core-first strategy. Cationic ring opening polymerisation (CROP) of 2-methyl-2-oxazoline (MeOx) was first initiated by allyl bromide, and then quenched with heptakis(6-deoxy-6-amino)β-CD in order to get a 7-arm star polymer. Then heptakis(6-deoxy-6-iodo-2,3-di-O-acetyl)β-CD was synthesised in order to get an initiator for the CROP of MeOx. Initiation and propagation kinetic measurements were undertaken and the ratio kp/ki was found to be too high to provide a controlled polymerisation. Using iodine as co-initiator allowed a decrease of the kp/ki ratio that gave better control of the polymerisation. DOSY NMR and viscosity characterisations were undertaken, and both techniques lead to the demonstration of a lower hydrodynamic volume of the star polymers versus the linear counterparts, for compounds of the same molecular weight.
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21
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Fiatte C, Huin C, Collet P, Plénat F, Dauça M, Schohn H. Expression of PPARgamma is reduced by medium supplementation with L-glutamine in human colorectal Caco-2 cells. Int J Mol Med 2008; 22:825-832. [PMID: 19020782] [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: 05/27/2023] Open
Abstract
Peroxisome proliferator-activated receptor-gamma (PPARgamma) belongs to the nuclear hormone receptor family. This receptor is implicated in colon cell differentiation and in colon cancer. Receptor activation by specific agonists has been shown to protect against colon cancer progression. PPARgamma protein content within cells is modulated by several mechanisms, including proteasome degradation, activation of Wnt signalling pathways and presence of fermentation products such as butyrate. Herein, we investigated the impact of L-glutamine on PPARgamma expression during the differentiation of Caco-2 cells grown in medium containing dialyzed fetal calf serum supplemented or not with L-glutamine. Using RT-PCR and Western blotting, we demonstrated that PPARgamma expression was decreased when L-glutamine was added to the medium. Using immunohistochemistry, we demonstrated that PPARgamma immunostaining was mainly found in cytoplasm when cells were cultured with L-glutamine while it was found in nuclei and cytoplasm when cells were grown without the addition of L-glutamine. Supershift retardation assays demonstrated a decrease of PPARgamma binding onto consensus peroxisome proliferator response element. We concluded that L-glutamine modulated PPARgamma expression in Caco-2 cells.
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Affiliation(s)
- Cathy Fiatte
- Laboratoire d'Ingénierie Moléculaire et Biochimie Pharmacologique, EA 3940, Université P. Verlaine, Metz, Campus Bridoux, F57070 Metz, France
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22
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Fiatte C, Huin C, Bertin I, Lesuffleur T, Pluvinet A, Touche N, Plénat F, Dauça M, Domenjoud L, Schohn H. Genetic analysis of peroxisome proliferator-activated receptor gamma1 splice variants in human colorectal cell lines. Int J Oncol 2006; 29:1601-10. [PMID: 17089002] [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: 05/12/2023] Open
Abstract
Peroxisome proliferator-activated receptor gamma (PPARgamma) is a member of the nuclear hormone receptor family. In colon, this transcription factor is involved in differentiation of absorptive cells. PPARgamma participates also in colon carcinogenesis and cancer progression. Two isoforms, namely PPARgamma1 and PPARgamma2, have been described. Recently, new PPARgamma1 transcripts whose translation raises PPARgamma1 protein have been characterised. They differ from each other by combination of untranslated exons localised in the 5' UTR of the PPARG gene. Here, we studied whether such a diversity of PPARgamma transcripts occurs in human colon cell models. Based on bioinformatic analysis, putative untranslated exons were identified in the human PPARG gene. By RT-PCR analysis, we have demonstrated that several of these untranslated exons are included in PPARgamma transcripts from colon-derived cell lines or in those derived from other tissue. Using HT-29 cells, changes in PPARgamma1 mRNA levels were observed after treatment with PPARgamma agonists such as pioglitazone and troglitazone. These modifications correlated with particular PPARgamma transcripts excluding the untranslated exon A2. HT-29 cells treatment with actinomycin D or cycloheximide showed that the presence of PPARgamma mRNA including exon A2 was dependent on de novo protein synthesis. We concluded that diverse PPARgamma1 mRNA exist in colorectal cells. Levels of PPARgamma1 transcript varied according to the phenotype of colon cell model used. We suggest that regulation of PPARgamma1 mRNA levels could be dependent in part on the composition of untranslated exon(s) in the 5' UTR of PPARgamma1 mRNA.
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Affiliation(s)
- Cathy Fiatte
- EA 3446 Proliférateurs de Peroxysomes, Laboratoire de Biologie Cellulaire du Développement, Faculté des Sciences et Techniques, 54506 Vandoeuvre les Nancy Cedex, France
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23
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Fiatte C, Huin C, Bertin I, Lesuffleur T, Pluvinet A, Touche N, Plénat F, Dauça M, Domenjoud L, Schohn H. Genetic analysis of peroxisome proliferator-activated receptor γ1 splice variants in human colorectal cell lines. Int J Oncol 2006. [DOI: 10.3892/ijo.29.6.1601] [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: 11/06/2022] Open
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Huin C, Schohn H, Hatier R, Bentejac M, Antunes L, Plénat F, Bugaut M, Dauça M. Expression of peroxisome proliferator-activated receptors alpha and gamma in differentiating human colon carcinoma Caco-2 cells. Biol Cell 2002; 94:15-27. [PMID: 12000143 DOI: 10.1016/s0248-4900(01)01178-9] [Citation(s) in RCA: 20] [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: 11/17/2022]
Abstract
The expression of peroxisome proliferator-activated receptors alpha (PPARalpha) and gamma (PPARgamma) was studied in the human adenocarcinoma Caco-2 cells induced to differentiate by long term culture (15 days). The differentiation of Caco-2 cells was attested by increases in the activities of sucrase-isomaltase and alkaline phosphatase (two brush border enzymes), fatty acyl-CoA oxidase (AOX) and catalase (two peroxisomal enzymes), by an elevation in the protein levels of villin (a brush border molecular marker), AOX, peroxisomal bifunctional enzyme (PBE), catalase and peroxisomal membrane protein of 70 kDa (PMP70). and by the appearance of peroxisomes. The expression of PPARalpha and PPARgamma was investigated by Western blotting, immunocytochemistry, Northern blotting and S1 nuclease protection assay during the differentiation of Caco-2 cells. The protein levels of PPARalpha, PPARgamma, and PPARgamma2 increased gradually during the time-course of Caco-2 cell differentiation. Immunocytochemistry revealed that PPARalpha and gamma were localized in cell nuclei. The PPARgamma1 protein was encoded by PPARgamma3 mRNA because no signal was obtained for PPARgamma1 mRNA using a specific probe in S1 nuclease protection assay. The amount of PPARgamma3 mRNA increased concomitantly to the resulting PPARgamma1 protein. On the other hand, the mRNA of PPARalpha and PPARgamma2 were not significantly changed, suggesting that the increase in their respective protein was due to an elevation of the translational rate. The role played by the PPAR subtypes in Caco-2 cell differentiation is discussed.
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Affiliation(s)
- Cécile Huin
- Laboratoire de biologie cellulaire du développement, EA 3446 Proliférateurs de peroxysomes, Faculté des sciences, Vandoeuvre-lès-Nancy, France
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25
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Keller JM, Collet P, Bianchi A, Huin C, Bouillaud-Kremarik P, Becuwe P, Schohn H, Domenjoud L, Dauça M. Implications of peroxisome proliferator-activated receptors (PPARS) in development, cell life status and disease. Int J Dev Biol 2000; 44:429-42. [PMID: 11032176] [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] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The past several years have seen an increasing interest in the peroxisome proliferator-activated receptors (PPARs). These transcriptional factors belong to the superfamily of the steroid/thyroid/retinoid receptors. They are activated by fatty acids or their metabolites as well as by different xenobiotic peroxisome proliferators. These receptors are expressed in both the embryo and the adult organism. They have been implicated in cell proliferation, differentiation and apoptosis. In this review, we will attempt to point out some of the more salient features of this expression pattern during development and the different steps of cell life. The current understanding of how PPARs are involved in some human diseases will also be described.
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Affiliation(s)
- J M Keller
- Laboratoire de Biologie Cellulaire du Développement, UPRES 2402 Proliférateurs de Peroxysomes, Université Henri Poincaré-Nancy I, Faculté des Sciences, Vandoeuvre-les-Nancy, France
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26
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Huin C, Corriveau L, Bianchi A, Keller JM, Collet P, Krémarik-Bouillaud P, Domenjoud L, Bécuwe P, Schohn H, Ménard D, Dauça M. Differential expression of peroxisome proliferator-activated receptors (PPARs) in the developing human fetal digestive tract. J Histochem Cytochem 2000; 48:603-11. [PMID: 10769044 DOI: 10.1177/002215540004800504] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.8] [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: 12/13/2022] Open
Abstract
We investigated the spatiotemporal distributions of the different peroxisome proliferator-activated receptor (PPAR) isotypes (alpha, beta, and gamma) during development (Week 7 to Week 22 of gestation) of the human fetal digestive tract by immunohistochemistry using specific polyclonal antibodies. The PPAR subtypes, including PPARgamma, are expressed as early as 7 weeks of development in cell types of endodermal and mesodermal origin. The presence of PPARgamma was also found by Western blotting and nuclease-S1 protection assay, confirming that this subtype is not adipocyte-specific. PPARalpha, PPARbeta, and PPARgamma exhibit different patterns of expression during morphogenesis of the digestive tract. Whatever the stage and the gut region (except the stomach) examined, PPARgamma is expressed at a high level, suggesting some fundamental role for this receptor in development and/or physiology of the human digestive tract.
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Affiliation(s)
- C Huin
- Laboratoire de Biologie Cellulaire du Développement, EA 2402 "Proliférateurs de Peroxysomes," Faculté des Sciences, Vandoeuvre-les-Nancy, France
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