1
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Delecourt G, Plet L, Guen YL, Tezgel O, Tresset G, Midoux P, Montier T, Bennevault V, Guégan P. Synthesis of Double Hydrophilic Block Copolymers Poly(2-isopropyl-2-oxazoline-b-ethylenimine) and their DNA Transfection Efficiency. Macromol Biosci 2023; 23:e2200296. [PMID: 36189853 DOI: 10.1002/mabi.202200296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/20/2022] [Indexed: 01/19/2023]
Abstract
Gene delivery is now a part of the therapeutic arsenal for vaccination and treatments of inherited or acquired diseases. Polymers represent an opportunity to develop new synthetic vectors for gene transfer, with a prerequisite of improved delivery and reduced toxicity compared to existing polymers. Here, the synthesis in a two-step's procedure of linear poly(ethylenimine-b-2-isopropyl-2-oxazoline) block copolymers with the linear polyethylenimine (lPEI) block of various molar masses is reported; the molar mass of the poly(2-isopropyl-2-oxazoline) (PiPrOx) block has been set to 7 kg mol-1 . Plasmid DNA condensation is successfully achieved, and in vitro transfection efficiency of the copolymers is at least comparable to that obtained with the lPEI of same molar mass. lPEI-b-PiPrOx block copolymers are however less cytotoxic than their linear counterparts. PiPrOx can be a good alternative to PEG which is often used in drug delivery systems. The grafting of histidine moieties on the lPEI block of lPEI-b-PiPrOx does not provide any real improvement of the transfection efficiency. A weak DNA condensation is observed, due to increased steric hindrance along the lPEI backbone. The low cytotoxicity of lPEI-b-PiPrOx makes this family a good candidate for future gene delivery developments.
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Affiliation(s)
- Gwendoline Delecourt
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, UMR 8232 CNRS, Sorbonne University, Paris, Cedex 05, 75252, France
| | - Laetitia Plet
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, UMR 8232 CNRS, Sorbonne University, Paris, Cedex 05, 75252, France
| | - Yann Le Guen
- INSERM, EFS, UMR 1078, GGB - GTCA team, Univ Brest, Brest, 29200, France
| | - Ozgul Tezgel
- CNRS, Laboratoire de Physique des Solides, University of Paris-Saclay, Orsay, 91405, France
| | - Guillaume Tresset
- CNRS, Laboratoire de Physique des Solides, University of Paris-Saclay, Orsay, 91405, France
| | - Patrick Midoux
- CNRS UPR4301, Centre de Biophysique Moléculaire, Orléans, Cedex 2, 45071, France
| | - Tristan Montier
- INSERM, EFS, UMR 1078, GGB - GTCA team, Univ Brest, Brest, 29200, France.,CHRU de Brest, Service de Génétique Médicale et de Biologie de la Reproduction, Centre de Référence des Maladies Rares "Maladies Neuromusculaires", Brest, 29200, France
| | - Véronique Bennevault
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, UMR 8232 CNRS, Sorbonne University, Paris, Cedex 05, 75252, France.,University of Evry, Evry, Cedex, 91025, France
| | - Philippe Guégan
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, UMR 8232 CNRS, Sorbonne University, Paris, Cedex 05, 75252, France
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2
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Plet L, Delecourt G, Hanafi M, Pantoustier N, Pembouong G, Midoux P, Bennevault V, Guégan P. Controlled star poly(2-oxazoline)s: Synthesis, characterization. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109323] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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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. THE EUROPEAN PHYSICAL JOURNAL. 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] [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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4
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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] [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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5
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Delsarte I, Delattre F, Rafin C, Veignie E. Investigations of benzo[a]pyrene encapsulation and Fenton degradation by starch nanoparticles. Carbohydr Polym 2018; 186:344-349. [DOI: 10.1016/j.carbpol.2018.01.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 12/22/2017] [Accepted: 01/10/2018] [Indexed: 02/07/2023]
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6
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Jiménez Blanco JL, Benito JM, Ortiz Mellet C, García Fernández JM. Molecular nanoparticle-based gene delivery systems. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.03.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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7
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Wan N, Huan ML, Ma XX, Jing ZW, Zhang YX, Li C, Zhou SY, Zhang BL. Design and application of cationic amphiphilic β-cyclodextrin derivatives as gene delivery vectors. NANOTECHNOLOGY 2017; 28:465101. [PMID: 28905810 DOI: 10.1088/1361-6528/aa8c9c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The nano self-assembly profiles of amphiphilic gene delivery vectors could improve the density of local cationic head groups to promote their DNA condensation capability and enhance the interaction between cell membrane and hydrophobic tails, thus increasing cellular uptake and gene transfection. In this paper, two series of cationic amphiphilic β-cyclodextrin (β-CD) derivatives were designed and synthesized by using 6-mono-OTs-β-CD (1) as the precursor to construct amphiphilic gene vectors with different building blocks in a selective and controlled manner. The effect of different type and degree of cationic head groups on transfection and the endocytic mechanism of β-CD derivatives/DNA nanocomplexes were also investigated. The results demonstrated that the designed β-cyclodextrin derivatives were able to compact DNA to form stable nanocomplexes and exhibited low cytotoxicity. Among them, PEI-1 with PEI head group showed enhanced transfection activity, significantly higher than commercially available agent PEI25000 especially in the presence of serum, showing potential application prospects in clinical trials. Moreover, the endocytic uptake mechanism involved in the gene transfection of PEI-1 was mainly through caveolae-mediated endocytosis, which could avoid the lysosomal degradation of loaded gene, and had great importance for improving gene transfection activity.
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Affiliation(s)
- Ning Wan
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, People's Republic of China. Department of Pharmacy, Guangzhou General Hospital of Guangzhou Military Command, People's Republic of China
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8
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2011-2012. MASS SPECTROMETRY REVIEWS 2017; 36:255-422. [PMID: 26270629 DOI: 10.1002/mas.21471] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
This review is the seventh update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2012. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, and fragmentation are covered in the first part of the review and applications to various structural types constitute the remainder. The main groups of compound are oligo- and poly-saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:255-422, 2017.
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Affiliation(s)
- David J Harvey
- Department of Biochemistry, Oxford Glycobiology Institute, University of Oxford, Oxford, OX1 3QU, UK
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9
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Rasolonjatovo B, Pitard B, Haudebourg T, Bennevault V, Guégan P. Synthesis of tetraarm star block copolymer based on polytetrahydrofuran and poly(2-methyl-2-oxazoline) for gene delivery applications. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.09.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Gonçalves C, Akhter S, Pichon C, Midoux P. Intracellular Availability of pDNA and mRNA after Transfection: A Comparative Study among Polyplexes, Lipoplexes, and Lipopolyplexes. Mol Pharm 2016; 13:3153-63. [PMID: 27486998 DOI: 10.1021/acs.molpharmaceut.6b00376] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Intracellular availability of nucleic acids from synthetic vectors is critical and directly influences the transfection efficiency (TE). Herein, we evaluated the TE of polymer- and lipid-based nanoplexes (polyplexes, lipoplexes and lipopolyplexes) of EGFP-encoding mRNA and pDNA. To determine the translation and transcription efficiency of each nucleic acid nanoplex, in vitro expression was measured in HEK293T7 cells that permit gene expression in the cytoplasmic region. Globally, mRNA transfection profile was well corroborative with cytoplasmic transfection of pT7-pDNA as well as with nuclear transfection of pCMV-DNA. Irrespective of the nucleic acid, high TE was observed with histidinylated l-polyethylenimine (His-lPEI) polyplexes and dioleyl succinyl paromomycin/O,O-dioleyl-N-histamine phosphoramidate (DOPS/MM27) lipoplexes. Moreover, His-lPEI polyplexes yielded higher in vitro expression of EGFP for pDNA than for mRNA. Furthermore, a significant enhancement in the TE in the presence of an excess of His-lPEI was observed indicating that this polymer promotes cytosolic delivery. Compared to other nanoplexes, His-lPEI polyplex showed high intracellular availability of DNA and mRNA along with low cytotoxicity, owing to its rapid (complete or partial) unpacking in the cytosol and/or endosomes. This study gives an insight that, whether with mRNA or pDNA, enhancing nanoplex unpacking in the endosomes and cytosol would improve the delivery of nucleic acid in the cytosol and particularly in the case of pDNA where a sufficient available amount of pDNA in the cytoplasm would definitely improve its transport toward the nucleus.
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Affiliation(s)
- Cristine Gonçalves
- Centre de Biophysique Moléculaire, CNRS UPR4301 , rue Charles Sadron CS 80054, F-45071 Orléans Cedex 02, France.,Université d'Orléans , Orléans, France
| | - Sohail Akhter
- Centre de Biophysique Moléculaire, CNRS UPR4301 , rue Charles Sadron CS 80054, F-45071 Orléans Cedex 02, France.,Université d'Orléans , Orléans, France.,Le Studium Loire Valley Institute for Advanced Studies , Centre-Val de Loire région, France
| | - Chantal Pichon
- Centre de Biophysique Moléculaire, CNRS UPR4301 , rue Charles Sadron CS 80054, F-45071 Orléans Cedex 02, France.,Université d'Orléans , Orléans, France
| | - Patrick Midoux
- Centre de Biophysique Moléculaire, CNRS UPR4301 , rue Charles Sadron CS 80054, F-45071 Orléans Cedex 02, France.,Université d'Orléans , Orléans, France
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11
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Duarte L, Nag S, Castro M, Zaborova E, Ménand M, Sollogoub M, Bennevault V, Feller JF, Guégan P. Chemical Sensors Based on New Polyamides Biobased on (Z) Octadec-9-Enedioic Acid and β-Cyclodextrin. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600102] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Lisday Duarte
- Laboratoire Analyses et Modélisation pour la Biologie et l'Environnement (UMR 8587); University of Evry; 91025 Evry Cedex France
| | - Sananda Nag
- Smart Plastics Group; European University of Brittany; LIMATB-UBS; 56321 Lorient France
| | - Mickaël Castro
- Smart Plastics Group; European University of Brittany; LIMATB-UBS; 56321 Lorient France
| | - Elena Zaborova
- Sorbonne Universités; UPMC Univ Paris 06; Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Team Chimie des polymères; 75252 Paris cedex France
| | - Mickaël Ménand
- Sorbonne Universités; UPMC Univ Paris 06; Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Team Chimie des polymères; 75252 Paris cedex France
| | - Matthieu Sollogoub
- Sorbonne Universités; UPMC Univ Paris 06; Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Team Chimie des polymères; 75252 Paris cedex France
| | - Véronique Bennevault
- Sorbonne Universités; UPMC Univ Paris 06; Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Team Chimie des polymères; 75252 Paris cedex France
- University of Evry; 91025 Evry France
| | - Jean-Francois Feller
- Smart Plastics Group; European University of Brittany; LIMATB-UBS; 56321 Lorient France
| | - Philippe Guégan
- Sorbonne Universités; UPMC Univ Paris 06; Institut Parisien de Chimie Moléculaire (UMR-CNRS 8232); Team Chimie des polymères; 75252 Paris cedex France
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12
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Liu W, Zhang X, Wang R, Xu H, Chi B. Supramolecular assemblies of histidinylated β-cyclodextrin for enhanced oligopeptide delivery into osteoclast precursors. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:490-504. [DOI: 10.1080/09205063.2016.1140612] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Hu P, Chen Y, Li JJ, Liu Y. Construction, Enzyme Response, and Substrate Capacity of a Hyaluronan-Cyclodextrin Supramolecular Assembly. Chem Asian J 2015; 11:505-11. [PMID: 26556213 DOI: 10.1002/asia.201501029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Indexed: 01/08/2023]
Abstract
A supramolecular assembly was constructed with a cationic cyclodextrin (EICD) and native hyaluronan (HA). The cationic carboxylic ester pendants on HA support hyaluronidase (HAase)-responsive sites and the EICD supports artificial carboxylic esterase responsive sites. Substrate-binding models were investigated by using environment-sensitive fluorescence probes 2-p-toluidino-6-naphthalenesulfoniate sodium (2,6-TNS) and thioflavin T (ThT). On a HA/EICD assembly, EICD was able to bind an anionic substrate and HA and EICD constructed the cationic substrate binding site together. This assembly could be used as a sequential dual-substrate carrier.
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Affiliation(s)
- Ping Hu
- Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Yong Chen
- Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P.R. China.,Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, P.R. China
| | - Jing-Jing Li
- Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Yu Liu
- Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P.R. China. .,Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, P.R. China.
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14
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Gallego-Yerga L, Lomazzi M, Franceschi V, Sansone F, Ortiz Mellet C, Donofrio G, Casnati A, García Fernández JM. Cyclodextrin- and calixarene-based polycationic amphiphiles as gene delivery systems: a structure-activity relationship study. Org Biomol Chem 2015; 13:1708-23. [PMID: 25474077 DOI: 10.1039/c4ob02204a] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Multi-head/multi-tail facial amphiphiles built on cyclodextrin (CD) and calixarene (CA) scaffolds are paradigmatic examples of monodisperse gene delivery systems. The possibility to precisely control the architectural features at the molecular level offers unprecedented opportunities for conducting structure-activity relationship studies. A major requirement for those channels is the design of a sufficiently diverse ensemble of compounds for parallel evaluation of their capabilities to condense DNA into transfection nanoparticles where the gene material is protected from the environment. Here we have undertaken the preparation of an oriented library of β-cyclodextrin (βCD) and calix[4]arene (CA4) vectors with facial amphiphilic character designed to ascertain the effect of the cationic head nature (aminothiourea-, arginine- or guanidine-type groups) and the macrocyclic platform on the abilities to complex plasmid DNA (pDNA) and in the efficiency of the resulting nanocomplexes to transfect cells in vitro. The hydrophobic domain, formed by hexanoyl or hexyl chains, remains constant in each series, matching the overall structure found to be optimal in previous studies. DLS, TEM and AFM data support that all the compounds self-assemble in the presence of pDNA through a process that involves initially electrostatic interactions followed by formation of βCD or CA4 bilayers between the oligonucleotide filaments. Spherical transfectious nanoparticles that are monomolecular in DNA are thus obtained. Evaluation in epithelial COS-7 and human rhabdomyosarcoma RD-4 cells evidenced the importance of having primary amino groups in the vector to warrant high levels of transfection, probably because of their buffering capacity. The results indicate that the optimal cationic head depends on the macrocyclic core, aminothiourea groups being preferred in the βCD series and arginine groups in the CA4 series. Whereas the transfection efficiency relationships remain essentially unchanged within each series, irrespective of the cell type, the optimal platform (βD or CA4) strongly depends on the cell type. The results illustrate the potential of monodisperse vector prototypes and diversity-oriented strategies on identifying the optimal candidates for gene therapy applications.
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Affiliation(s)
- Laura Gallego-Yerga
- Dept. Química Orgánica, Facultad de Química, Universidad de Sevilla, c/Profesor García González 1, 41012 Sevilla, Spain.
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15
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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] [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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16
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Gulsuner HU, Ceylan H, Guler MO, Tekinay AB. Multi-domain short peptide molecules for in situ synthesis and biofunctionalization of gold nanoparticles for integrin-targeted cell uptake. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10677-10683. [PMID: 25942540 DOI: 10.1021/acsami.5b00093] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We describe design and synthesis model of multidomain (modular) peptides (MDPs), which direct a reaction cascade coupling the synthesis and surface functionalization of gold nanoparticles (AuNPs) in a single step. The synthesis is achieved via simple mixing of the aqueous solutions of auric acid and MDPs at room temperature without the addition of any surfactants or toxic intermediate reagents. This method allows facile control over the nanoparticle size between ∼2-15 nm, which opens a practical window for biomedical applications. In contrast to the conventional citrate-mediated methods, peptide-mediated synthesis and stabilization provide increased colloidal stability to AuNPs. As a proof of this concept, we demonstrate active targeting of human breast adenocarcinoma cell line (MCF7) using the one-step-prepared engineered AuNPs. Overall, we propose a single-step, chemically greener, biologically safer method for the synthesis and surface functionalization of gold nanoparticles in a size-controlled manner. The chemical versatility of the MDP design broadens the applicability of this strategy, thereby emerging as a successful alternative for the currently available nanoparticle preparation technologies.
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Affiliation(s)
- Hilal Unal Gulsuner
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Hakan Ceylan
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Mustafa O Guler
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Ayse B Tekinay
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
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17
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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] [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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18
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Abstract
Switchable DNA condensers based on β-CD bearing imidazolium and hydrolysable linkages were synthesized, showing base or enzyme-responsive switchable condensation ability.
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Affiliation(s)
- Ping Hu
- Department of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Yong Chen
- Department of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Yu Liu
- Department of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
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19
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Huang Z, Liu YH, Zhang YM, Zhang J, Liu Q, Yu XQ. Cyclen-based cationic lipids containing a pH-sensitive moiety as gene delivery vectors. Org Biomol Chem 2015; 13:620-30. [DOI: 10.1039/c4ob01856g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Imidazole-functionalized cationic lipids with a cyclen headgroup were synthesized, and the structure–activity relationship in gene delivery mediated by these lipids was discussed.
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Affiliation(s)
- Zheng Huang
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Yan-Hong Liu
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Yi-Mei Zhang
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Ji Zhang
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Qiang Liu
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
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20
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Gaspar VM, Gonçalves C, de Melo-Diogo D, Costa EC, Queiroz JA, Pichon C, Sousa F, Correia IJ. Poly(2-ethyl-2-oxazoline)-PLA-g-PEI amphiphilic triblock micelles for co-delivery of minicircle DNA and chemotherapeutics. J Control Release 2014; 189:90-104. [PMID: 24984013 DOI: 10.1016/j.jconrel.2014.06.040] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/21/2014] [Accepted: 06/21/2014] [Indexed: 12/24/2022]
Abstract
The design of nanocarriers for the delivery of drugs and nucleic-acids remains a very challenging goal due to their physicochemical differences. In addition, the reported accelerated clearance and immune response of pegylated nanomedicines highlight the necessity to develop carriers using new materials. Herein, we describe the synthesis of amphiphilic triblock poly(2-ethyl-2-oxazoline)-PLA-g-PEI (PEOz-PLA-g-PEI) micelles for the delivery of minicircle DNA (mcDNA) vectors. In this copolymer the generally used PEG moieties are replaced by the biocompatible PEOz polymer backbone that assembles the hydrophilic shell. The obtained results show that amphiphilic micelles have low critical micellar concentration, are hemocompatible and exhibit stability upon incubation in serum. The uptake in MCF-7 cells was efficient and the nanocarriers achieved 2.7 fold higher expression than control particles. Moreover, mcDNA-loaded micelleplexes penetrated into 3D multicellular spheroids and promoted widespread gene expression. Additionally, to prove the concept of co-delivery, mcDNA and doxorubicin (Dox) were simultaneously encapsulated in PEOz-PLA-g-PEI carriers, with high efficiency. Dox-mcDNA micelleplexes exhibited extensive cellular uptake and demonstrated anti-tumoral activity. These findings led us to conclude that this system has a potential not only for the delivery of novel mcDNA vectors, but also for the co-delivery of drug-mcDNA combinations without PEG functionalization.
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Affiliation(s)
- Vítor M Gaspar
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Cristine Gonçalves
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm et Université d'Orléans, 45071 Orléans cedex 02, France
| | - Duarte de Melo-Diogo
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Elisabete C Costa
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - João A Queiroz
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Chantal Pichon
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm et Université d'Orléans, 45071 Orléans cedex 02, France
| | - Fani Sousa
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Ilídio J Correia
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, 6200-506 Covilhã, Portugal.
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21
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Dou XB, Hu Y, Zhao NN, Xu FJ. Different types of degradable vectors from low-molecular-weight polycation-functionalized poly(aspartic acid) for efficient gene delivery. Biomaterials 2014; 35:3015-26. [PMID: 24388816 DOI: 10.1016/j.biomaterials.2013.12.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 12/10/2013] [Indexed: 12/17/2022]
Abstract
Poly(aspartic acid) (PAsp) has been employed as the potential backbone for the preparation of efficient gene carriers, due to its low cytotoxicity, good biodegradability and excellent biocompatibility. In this work, the degradable linear or star-shaped PBLA was first prepared via ring-opining polymerization of β-benzyl-L-aspartate N-carboxy anhydride (BLA-NCA) initiated by ethylenediamine (ED) or ED-functionalized cyclodextrin cores. Then, PBLA was functionalized via aminolysis reaction with low-molecular-weight poly(2-(dimethylamino)ethyl methacrylate) with one terminal primary amine group (PDMAEMA-NH2), followed by addition of excess ED or ethanolamine (EA) to complete the aminolysis process. The obtained different types of cationic PAsp-based vectors including linear or star PAsp-PDM-NH2 and PAsp-PDM-OH exhibited good condensation capability and degradability, benefiting gene delivery process. In comparison with gold standard polyethylenimine (PEI, ∼ 25 kDa), the cationic PAsp-based vectors, particularly star-shaped ones, exhibited much better transfection performances.
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Affiliation(s)
- X B Dou
- State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing Laboratory of Biomedical Materials, College of Materials Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Y Hu
- State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing Laboratory of Biomedical Materials, College of Materials Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - N N Zhao
- State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing Laboratory of Biomedical Materials, College of Materials Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - F J Xu
- State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing Laboratory of Biomedical Materials, College of Materials Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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22
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García Fernández JM, Benito JM, Ortiz Mellet C. Cyclodextrin-scaffolded glycotransporters for gene delivery. PURE APPL CHEM 2013. [DOI: 10.1351/pac-con-12-10-13] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Conventional drugs consist of a formulation of a bioactive species and a carrier, the former accounting for most of the sophistication of the design. In the case of biomolecular drugs, however, the role of the carrier becomes decisive in enabling the load to reach its target to carry out its designed therapeutic function. Thus, the clinical success of gene therapy, where the active principles are nucleic acids, critically depends on the use of efficient and safe delivery systems. Carbohydrates have proven particularly useful in this regard. Glycocoating, similarly to poly(ethylene)glycol (PEG)-coating (pegylation), can stabilize colloidal aggregates by improving solvation and preventing nonspecific interactions, for example, with serum proteins. Moreover, glycoconjugates can drive specific recognition and receptor-mediated internalization in target cells. Actually, the inherent flexibility of carbohydrate and glycoconjugate chemistry has greatly contributed to enlarging the range of functional materials that can be rationally conceived for gene delivery. Herein, this is illustrated with selected examples that focus on controlling the architectural parameters of the vectors to make them suitable for structure–activity relationship (SAR) and optimization studies. The members of the cyclomaltooligosaccharide (cyclodextrin, CD) family will be the central actors of the story.
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23
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Martínez Á, Bienvenu C, Jiménez Blanco JL, Vierling P, Mellet CO, García Fernández JM, Di Giorgio C. Amphiphilic Oligoethyleneimine−β-Cyclodextrin “Click” Clusters for Enhanced DNA Delivery. J Org Chem 2013; 78:8143-8. [DOI: 10.1021/jo400993y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Álvaro Martínez
- Departamento de Química
Orgánica, Facultad de Química, Universidad de Sevilla, Profesor García González 1,
E-41012 Sevilla, Spain
| | - Céline Bienvenu
- Institut de Chimie Nice, UMR
7272, Université de Nice Sophia Antipolis, CNRS, 28, Avenue de Valrose, F-06108 Nice, France
| | - José L. Jiménez Blanco
- Departamento de Química
Orgánica, Facultad de Química, Universidad de Sevilla, Profesor García González 1,
E-41012 Sevilla, Spain
| | - Pierre Vierling
- Institut de Chimie Nice, UMR
7272, Université de Nice Sophia Antipolis, CNRS, 28, Avenue de Valrose, F-06108 Nice, France
| | - Carmen Ortiz Mellet
- Departamento de Química
Orgánica, Facultad de Química, Universidad de Sevilla, Profesor García González 1,
E-41012 Sevilla, Spain
| | - José M. García Fernández
- Instituto de Investigaciones Químicas
(IIQ), CSIC−Universidad de Sevilla, Américo Vespucio 49, Isla de la Cartuja, E-41092 Sevilla,
Spain
| | - Christophe Di Giorgio
- Institut de Chimie Nice, UMR
7272, Université de Nice Sophia Antipolis, CNRS, 28, Avenue de Valrose, F-06108 Nice, France
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24
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Aranda C, Urbiola K, Méndez Ardoy A, García Fernández JM, Ortiz Mellet C, de Ilarduya CT. Targeted gene delivery by new folate-polycationic amphiphilic cyclodextrin-DNA nanocomplexes in vitro and in vivo. Eur J Pharm Biopharm 2013; 85:390-7. [PMID: 23811437 DOI: 10.1016/j.ejpb.2013.06.011] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 06/06/2013] [Accepted: 06/10/2013] [Indexed: 12/24/2022]
Abstract
AIM Development and evaluation of a new targeted gene delivery system by first preforming self-assembled nanocomplexes from a polycationic amphiphilic cyclodextrin (paCD) and pDNA and then decorating the surface of the nanoparticles with folic acid (FA). EXPERIMENTAL SECTION The cyclodextrin derivative (T2) is a tetradecacationic structure incorporating 14 primary amino groups and 7 thioureido groups at the primary face of a cyclomaltoheptaose (β-CD) core and 14 hexanoyl chains at the secondary face. RESULTS AND CONCLUSIONS T2 complexed and protected pDNA (luciferase-encoding plasmid DNA, pCMVLuc) and efficiently mediated transfection in vitro and in vivo with no associated toxicity. The combination of folic acid with CDplexes afforded ternary nanocomplexes (Fol-CDplexes) that enhanced significantly the transfection activity of pCMVLuc in human cervix adenocarcinoma HeLa cells, especially when formulated with 1 μg FA/μg DNA. The observed transfection enhancement was associated to specific folate receptor (FR)-mediated internalization of Fol-CDplexes, as corroborated by employing a receptor-deficient cell line (HepG2) and an excess of free folic acid. The in vivo studies, including luciferase reporter gene expression and biodistribution, indicated that 24h after intravenous administration of the T2-pDNA nanocomplexes, transfection takes part mainly in the liver and partially in the lung. Interestingly, the corresponding Fol-CDplexes lead to an increase in the transfection activity in the lung and the liver compared to non-targeted CDplexes. Folate-CDplexes developed in this study have improved transfection efficiency and although various methods have been used for the preparation of ligand-DNA-complexes, covalent binding is usually needed and insoluble aggregates are formed unless the concentration of the components is minimized. However, the complexes developed by first time in this work were prepared by simple mixing. The synthetic nature of this formulation provides the potential of flexibility in terms of composition and the capability of inexpensive and large-scale production of the complexes. These nanovectors may be an adequate alternative to viral vectors for gene therapy in the future.
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Affiliation(s)
- Cristina Aranda
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, University of Navarra, Pamplona, Spain
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25
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Hu Y, Zhu Y, Yang WT, Xu FJ. New star-shaped carriers composed of β-cyclodextrin cores and disulfide-linked poly(glycidyl methacrylate) derivative arms with plentiful flanking secondary amine and hydroxyl groups for highly efficient gene delivery. ACS APPLIED MATERIALS & INTERFACES 2013; 5:703-712. [PMID: 23270523 DOI: 10.1021/am302249x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The biocleavable star-shaped vectors (CD-SS-PGEAs) consisting of nonionic β-cyclodextrin (β-CD) cores and disulfide-linked low-molecular-weight poly(glycidyl methacrylate) (PGMA) derivative arms with plentiful flanking secondary amine and hydroxyl groups were successfully proposed for highly efficient gene delivery. A simple two-step method was first adopted to introduce reduction-sensitive disulfide-linked initiation sites of atom transfer radical polymerization (ATRP) onto β-CD cores. The disulfide-linked PGMA arms prepared subsequently via ATRP were functionalized via the ring-opening reaction with ethanolamine (EA) to produce the cationic EA-functionalized PGMA (PGEA) arms with plentiful secondary amine and nonionic hydroxyl units. The cationic PGEA arms can be readily cleavable from the β-CD cores under reducible conditions. Such biocleavable star-shaped CD-SS-PGEA vectors possessed the good pDNA condensation ability, low cytotoxicity, and efficient gene delivery ability.
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Affiliation(s)
- Y Hu
- State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, College of Materials Science & Engineering, Beijing University of Chemical Technology, Beijing 100029 China
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26
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Martínez Á, Ortiz Mellet C, García Fernández JM. Cyclodextrin-based multivalent glycodisplays: covalent and supramolecular conjugates to assess carbohydrate-protein interactions. Chem Soc Rev 2013; 42:4746-73. [PMID: 23340678 DOI: 10.1039/c2cs35424a] [Citation(s) in RCA: 187] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Covalent attachment of biorecognizable sugar ligands in several copies at precise positions of cyclomaltooligosaccharide (cyclodextrin, CD) macrocycles has proven to be an extremely flexible strategy to build multivalent conjugates. The commercial availability of the native CDs in three different sizes, their axial symmetry and the possibility of position- and face-selective functionalization allow a strict control of the valency and spatial orientation of the recognition motifs (glycotopes) in low, medium, high and hyperbranched glycoclusters, including glycodendrimer-CD hybrids. "Click-type" ligation chemistries, including copper(i)-catalyzed azide-alkyne cycloaddition (CuAAC), thiol-ene coupling or thiourea-forming reactions, have been implemented to warrant full homogeneity of the adducts. The incorporation of different glycotopes to investigate multivalent interactions in heterogeneous environments has also been accomplished. Not surprisingly, multivalent CD conjugates have been, and continue to be, major actors in studies directed at deciphering the structural features ruling carbohydrate recognition events. Nanometric glycoassemblies endowed with the capability of adapting the inter-saccharide distances and orientations in the presence of a receptor partner or capable of mimicking the fluidity of biological membranes have been conceived by multitopic inclusion complex formation, rotaxanation or self-assembling. Applications in the fields of sensors, site-specific drug and gene delivery or protein stabilization attest for the maturity of the field.
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Affiliation(s)
- Álvaro Martínez
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, c/ Profesor García González 1, E-41012 Sevilla, Spain
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27
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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] [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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28
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Velasco D, Réthoré G, Newland B, Parra J, Elvira C, Pandit A, Rojo L, San Román J. Low polydispersity (N-ethyl pyrrolidine methacrylamide-co-1-vinylimidazole) linear oligomers for gene therapy applications. Eur J Pharm Biopharm 2012; 82:465-74. [DOI: 10.1016/j.ejpb.2012.08.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 08/04/2012] [Accepted: 08/08/2012] [Indexed: 11/17/2022]
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29
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Bagnacani V, Franceschi V, Fantuzzi L, Casnati A, Donofrio G, Sansone F, Ungaro R. Lower rim guanidinocalix[4]arenes: macrocyclic nonviral vectors for cell transfection. Bioconjug Chem 2012; 23:993-1002. [PMID: 22463059 DOI: 10.1021/bc2006829] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Guanidinium groups were introduced through a spacer at the lower rim of calix[4]arenes in the cone conformation to give new potential nonviral vectors for gene delivery. Several structural modifications were explored, such as the presence or absence of a macrocyclic scaffold, lipophilicity of the backbone, length of the spacer, and nature of the charged groups, in order to better understand the factors which affect the DNA condensation ability and transfection efficiency of these derivatives. The most interesting compound was a calix[4]arene unsubstituted at the upper rim and having four guanidinium groups linked at the lower rim through a three carbon atom spacer. This compound, when formulated with DOPE, showed low toxicity and transfection efficiency higher than the commercially available lipofectamine LTX in the treatment of human Rhabdomiosarcoma and Vero cells. Most of the investigated compounds showed a tendency to self-aggregate in pure water or in the presence of salts, as evidenced by NMR and AFM studies, and it was found that the ability to condense DNA plasmids in nanometric globules is a necessary but not sufficient condition for transfection. The superiority of macrocyclic vectors over linear Gemini-type analogues and of guanidinium compared to other ammonium head groups in determining the biological activity of the vectors was also ascertained.
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Affiliation(s)
- Valentina Bagnacani
- Dipartimento di Chimica Organica e Industriale, Università di Parma , Parco Area delle Scienze 17/A, I-43124, Parma, Italy
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30
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Bienvenu C, Martínez Á, Jiménez Blanco JL, Di Giorgio C, Vierling P, Ortiz Mellet C, Defaye J, García Fernández JM. Polycationic amphiphilic cyclodextrins as gene vectors: effect of the macrocyclic ring size on the DNA complexing and delivery properties. Org Biomol Chem 2012; 10:5570-81. [PMID: 22733369 DOI: 10.1039/c2ob25786f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Céline Bienvenu
- Institut de Chimie de Nice, UMR 7272, Université de Nice Sophia Antipolis - CNRS, 28, Avenue de Valrose, F-06100 Nice, France
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31
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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] [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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