1
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Tulsiyan KD, Panda SK, Rana MK, Biswal HS. Critical assessment of interactions between ct-DNA and choline-based magnetic ionic liquids: evidences of compaction. Chem Sci 2024; 15:5507-5515. [PMID: 38638223 PMCID: PMC11023040 DOI: 10.1039/d4sc00004h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Accepted: 03/14/2024] [Indexed: 04/20/2024] Open
Abstract
Ionic liquids (ILs) have become an alternative green solvent for storage and for stability of DNA. However, an in-depth understanding of binding and molecular interactions between ILs and DNA is needed. In this respect, magnetic ILs (MILs) are promising due to their tunable physicochemical properties. Various spectroscopic techniques and molecular simulations have been employed to unravel the critical factors of the strength and binding mechanism of MILs with DNA. UV-vis spectra unravel the multimodal binding of MILs with DNA, and the intrusion of IL molecules into the minor groove of DNA has been observed from dye displacement studies. Fluorescence correlation spectroscopic studies and scanning electron microscopy confirm the compaction of the DNA. ITC and molecular docking studies estimate the binding affinity of DNA with MILs, of ∼7 kcal mol-1. The 1 μs long-MD simulations give insight into the structural changes in the DNA in the MIL environment. Due to strong interaction with choline ions in the close vicinity, DNA helixes bend or squeeze in length and dilate in diameter (elliptical → spherical), leading to compaction. The post-MD parameters suggest a stronger interaction with [Ch]2[Mn] IL than with [Ch][Fe] IL; hence, the former induces DNA compaction to a more significant extent. Furthermore, decompaction is observed with the addition of sodium salts and is characterized using spectroscopic methods.
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Affiliation(s)
- Kiran Devi Tulsiyan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) PO - Bhimpur-Padanpur, Via-Jatni, District - Khurda, PIN - 752050 Bhubaneswar India
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
| | - Saroj Kumar Panda
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Berhampur Odisha-760010 India
| | - Malay Kumar Rana
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Berhampur Odisha-760010 India
| | - Himansu S Biswal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) PO - Bhimpur-Padanpur, Via-Jatni, District - Khurda, PIN - 752050 Bhubaneswar India
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
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2
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Nanotechnology for DNA and RNA delivery. Nanomedicine (Lond) 2023. [DOI: 10.1016/b978-0-12-818627-5.00008-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
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3
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Kulala Vittala S, Joseph J. Chiral self-assembly of fullerene clusters on CT-DNA templates. Faraday Discuss 2019; 207:459-469. [PMID: 29359217 DOI: 10.1039/c7fd00196g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we discuss the differential interaction of three monosubstituted fullerene derivatives possessing pyridinium, aniline or phenothiazine end groups (F-Py, F-An and F-PTz, respectively) with calf thymus DNA (CT-DNA), probed via spectroscopic and imaging techniques. The pyridinium derivative, F-Py becomes molecularly dissolved in 10% DMSO-PBS and interacts with CT-DNA via groove binding and electrostatic interactions, leading to the initial condensation of CT-DNA into micrometer sized aggregates and subsequent precipitation. On the other hand, the aniline derivative F-An, which is reported to form nanoclusters of 3-5 nm size, interacts with DNA through ordered, chiral assemblies on the CT-DNA template, thus perturbing the highly networked structure of CT-DNA to form nanonetworks, which eventually transform into condensed aggregates. The binding interactions between CT-DNA and F-An nanoclusters were established via UV-Vis, AFM and TEM analysis, and the chiral nature of the fullerene nanocluster assemblies on CT-DNA was confirmed by the presence of induced circular dichroism that was exhibited around the 250-370 nm region, corresponding to F-An nanocluster absorption. In contrast, the phenothiazine derivative F-PTz, which forms larger nanoclusters of ∼70 nm size in 10% DMSO-PBS, exhibited only weak interactions with CT-DNA without affecting its network structure. These results demonstrate the role of the hydrophobic-hydrophilic balance in the design of DNA interacting fullerene derivatives by controlling their cluster size and interactions with CT-DNA, and are significant in applications such as DNA condensation, gene delivery and dimension controlled nanomaterial fabrication.
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Affiliation(s)
- Sandeepa Kulala Vittala
- Photosciences and Photonics Section, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India.
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4
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Cavalli R, Primo L, Sessa R, Chiaverina G, di Blasio L, Alongi J, Manfredi A, Ranucci E, Ferruti P. The AGMA1 polyamidoamine mediates the efficient delivery of siRNA. J Drug Target 2017; 25:891-898. [PMID: 28817973 DOI: 10.1080/1061186x.2017.1363215] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
AGMA1, a prevailingly cationic, guanidine-bearing, linear, amphoteric polyamidoamine is an effective siRNA condensing agent. Here two AGMA1 samples of different molecular weight, i.e. AGMA1-5 and AGMA1-10 were evaluated as siRNA condensing agents and transfection promoters. AGMA1-10 formed stable polyplexes with a size lower than 50 nm and positive zeta potential. AGMA1-5 polyplexes were larger, about 100 nm in size. AGMA1-10 polyplexes, but not AGMA1-5 proved to be an effective intracellular siRNA carrier, able to trigger gene silencing in Hela and PC3 cell lines without eliciting cytotoxic effects. AGMA1-10 knocked down AKT-1 expression upon transfection with an AKT-1 specific siRNA. The polyplex entry mechanism was investigated and was mediated by macropinocytosis. In conclusion, AGMA1 has potential as an efficient, non-toxic tool for the intracellular delivery of siRNA and warrants further investigation.
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Affiliation(s)
- Roberta Cavalli
- a Drug Science and Technology Department , University of Torino , Torino , Italy
| | - Luca Primo
- b Candiolo Cancer Institute FPO-IRCCS , Candiolo , Italy.,c Department of Oncology , University of Torino , Torino , Italy
| | - Roberto Sessa
- d University of California, Cardiovascular Research Institute , Berkeley , USA
| | | | | | - Jenny Alongi
- e Department of Chemistry , Università degli Studi di Milano , Milano , Italy
| | - Amedea Manfredi
- e Department of Chemistry , Università degli Studi di Milano , Milano , Italy
| | - Elisabetta Ranucci
- e Department of Chemistry , Università degli Studi di Milano , Milano , Italy
| | - Paolo Ferruti
- e Department of Chemistry , Università degli Studi di Milano , Milano , Italy
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5
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Thomas TJ, Tajmir-Riahi HA, Thomas T. Polyamine–DNA interactions and development of gene delivery vehicles. Amino Acids 2016; 48:2423-31. [DOI: 10.1007/s00726-016-2246-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 04/27/2016] [Indexed: 12/11/2022]
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6
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Schimka S, Santer S, Mujkić-Ninnemann NM, Bléger D, Hartmann L, Wehle M, Lipowsky R, Santer M. Photosensitive Peptidomimetic for Light-Controlled, Reversible DNA Compaction. Biomacromolecules 2016; 17:1959-68. [DOI: 10.1021/acs.biomac.6b00052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Selina Schimka
- Institute
of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
- Max Planck Institute
of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Svetlana Santer
- Institute
of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany
| | | | - David Bléger
- Humboldt-Universität
zu Berlin, 12489 Berlin, Germany
| | - Laura Hartmann
- Max Planck Institute
of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Marko Wehle
- Theory
and Bio-Systems Group, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Reinhard Lipowsky
- Theory
and Bio-Systems Group, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Mark Santer
- Theory
and Bio-Systems Group, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
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7
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Kundu N, Roy A, Banik D, Sarkar N. Unveiling the Mode of Interaction of Berberine Alkaloid in Different Supramolecular Confined Environments: Interplay of Surface Charge between Nano-Confined Charged Layer and DNA. J Phys Chem B 2016; 120:1106-20. [PMID: 26756221 DOI: 10.1021/acs.jpcb.5b10121] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this Article, we demonstrate a detailed characterization of binding interaction of berberine chloride (BBCl) with calf-thymus DNA (CT-DNA) in buffer solution as well as in two differently charged reverse micelles (RMs). The photophyscial properties of this alkaloid have been modulated within these microheterogeneous bioassemblies. The mode of binding of this alkaloid with DNA is of debate to date. However, fluorescence spectroscopic measurements, circular dichroism (CD) measurement, and temperature-dependent study unambiguously establish that BBCl partially intercalates into the DNA base pairs. The nonplanarity imposed by partial saturation in their structure causes the nonclassical types of intercalation into DNA. Besides the intercalation, electrostatic interactions also play a significant role in the binding between BBCl and DNA. DNA structure turns into a condensed form after encapsulation into RMs, which is followed by the CD spectra and microscopy study. The probe location and dynamics in the nanopool of the RMs depended on the electrostatic interaction between the charged surfactants and cationic berberine. The structural alteration of CT-DNA from B form to condensed form and the interplay of surface charge between RMs and DNA determine the interaction between the alkaloid and DNA in RMs. Time-resolved study and fluorescence anisotropy measurements successfully provide the binding interaction of BBCl in the nanopool of the RMs in the absence and in the presence of DNA. This study motivates us to judge further the potential applicability of this alkaloid in other biological systems or other biomimicking organized assemblies.
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Affiliation(s)
- Niloy Kundu
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, WB India
| | - Arpita Roy
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, WB India
| | - Debasis Banik
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, WB India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, WB India
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8
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Zakrevskyy Y, Titov E, Lomadze N, Santer S. Phase diagrams of DNA-photosensitive surfactant complexes: effect of ionic strength and surfactant structure. J Chem Phys 2015; 141:164904. [PMID: 25362338 DOI: 10.1063/1.4899281] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Realization of all-optically controlled and efficient DNA compaction is the major motivation in the study of interactions between DNA and photosensitive surfactants. In this article, using recently published approach of phase diagram construction [Y. Zakrevskyy, P. Cywinski, M. Cywinska, J. Paasche, N. Lomadze, O. Reich, H.-G. Löhmannsroben, and S. Santer, J. Chem. Phys. 140, 044907 (2014)], a strategy for substantial reduction of compaction agent concentration and simultaneous maintaining the light-induced decompaction efficiency is proposed. The role of ionic strength (NaCl concentration), as a very important environmental parameter, and surfactant structure (spacer length) on the changes of positions of phase transitions is investigated. Increase of ionic strength leads to increase of the surfactant concentration needed to compact DNA molecule. However, elongation of the spacer results to substantial reduction of this concentration. DNA compaction by surfactants with longer tails starts to take place in diluted solutions at charge ratios Z < 1 and is driven by azobenzene-aggregation compaction mechanism, which is responsible for efficient decompaction. Comparison of phase diagrams for different DNA-photosensitive surfactant systems allowed explanation and proposal of a strategy to overcome previously reported limitations of the light-induced decompaction for complexes with increasing surfactant hydrophobicity.
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Affiliation(s)
- Yuriy Zakrevskyy
- Experimental Physics, Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam, Germany
| | - Evgenii Titov
- Experimental Physics, Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam, Germany
| | - Nino Lomadze
- Experimental Physics, Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam, Germany
| | - Svetlana Santer
- Experimental Physics, Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam, Germany
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9
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Venancio-Marques A, Bergen A, Rossi-Gendron C, Rudiuk S, Baigl D. Photosensitive polyamines for high-performance photocontrol of DNA higher-order structure. ACS NANO 2014; 8:3654-3663. [PMID: 24580129 DOI: 10.1021/nn500266b] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Polyamines are small, ubiquitous, positively charged molecules that play an essential role in numerous biological processes such as DNA packaging, gene regulation, neuron activity, and cell proliferation. Here, we synthesize the first series of photosensitive polyamines (PPAs) and demonstrate their ability to photoreversibly control nanoscale DNA higher-order structure with high efficiency. We show with fluorescence microscopy imaging that the efficiency of the PPAs as DNA-compacting agents is directly correlated to their molecular charge. Micromolar concentration of the most efficient molecule described here, a PPA containing three charges at neutral pH, compacts DNA molecules from a few kilobase pairs to a few hundred kilobase pairs, while subsequent 3 min UV illuminations at 365 nm triggers complete unfolding of DNA molecules. Additional application of blue light (440 nm for 3 min) induces the refolding of DNA into the compact state. Atomic force microscopy reveals that the compaction involves a global folding of the whole DNA molecule, whereas UV-induced unfolding is a modification initiated from the periphery of the compacted DNA, resulting in the occurrence of intermediate flower-like structures prior to the fully unfolded state.
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Affiliation(s)
- Anna Venancio-Marques
- Ecole Normale Supérieure-PSL Research University , Department of Chemistry, 24 Rue Lhomond, F-75005, Paris, France
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10
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Anatomy of plasmid DNAs with anti-silencing elements. Int J Pharm 2014; 464:27-33. [DOI: 10.1016/j.ijpharm.2014.01.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/07/2014] [Accepted: 01/18/2014] [Indexed: 12/13/2022]
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11
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Aguilar Moncayo EM, Guilloteau N, Bienvenu C, Jiménez Blanco JL, Di Giorgio C, Vierling P, Benito JM, Ortiz Mellet C, García Fernández JM. Cyclodextrin-scaffolded amphiphilic aminoglucoside clusters: self-assembling and gene delivery capabilities. NEW J CHEM 2014. [DOI: 10.1039/c4nj00700j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The self-assembling and gene transfer capabilities of monodisperse amphiphilic aminoglucoside–cyclodextrin conjugates depend on the amino disposition at the glycationic head.
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Affiliation(s)
- Eva M. Aguilar Moncayo
- Departamento de Química Orgánica
- Facultad de Química
- Universidad de Sevilla
- E-41012 Sevilla, Spain
| | - Nicolas Guilloteau
- LCMBA UMR 6001
- Université de Nice Sophia Antipolis – CNRS
- F-06100 Nice, France
| | - Céline Bienvenu
- LCMBA UMR 6001
- Université de Nice Sophia Antipolis – CNRS
- F-06100 Nice, France
| | - José L. Jiménez Blanco
- Departamento de Química Orgánica
- Facultad de Química
- Universidad de Sevilla
- E-41012 Sevilla, Spain
| | | | - Pierre Vierling
- LCMBA UMR 6001
- Université de Nice Sophia Antipolis – CNRS
- F-06100 Nice, France
| | - Juan M. Benito
- Instituto de Investigaciones Químicas
- CSIC – Universidad de Sevilla
- E-41092 Sevilla, Spain
| | - Carmen Ortiz Mellet
- Departamento de Química Orgánica
- Facultad de Química
- Universidad de Sevilla
- E-41012 Sevilla, Spain
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12
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Togashi R, Harashima H, Kamiya H. Correlation between transgen expression and plasmid DNA loss in mouse liver. J Gene Med 2013; 15:242-8. [DOI: 10.1002/jgm.2716] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 06/10/2013] [Accepted: 06/10/2013] [Indexed: 11/08/2022] Open
Affiliation(s)
- Ryohei Togashi
- Faculty of Pharmaceutical Sciences; Hokkaido University; Sapporo; Japan
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13
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Li X, Wang M, Liu C, Jing X, Huang Y. TAT-modified mixed micelles as biodegradable targeting and delivering system for cancer therapeutics. J Appl Polym Sci 2013. [DOI: 10.1002/app.39744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaoyuan Li
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun; 130022; China
| | - Mingzhe Wang
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun; 130022; China
| | - Changbai Liu
- The Institute of Molecular Biology; Three Gorges University; Yichang; 443002; China
| | - Xiabin Jing
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun; 130022; China
| | - Yubin Huang
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun; 130022; China
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14
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Kwok A, Eggimann GA, Reymond JL, Darbre T, Hollfelder F. Peptide dendrimer/lipid hybrid systems are efficient DNA transfection reagents: structure--activity relationships highlight the role of charge distribution across dendrimer generations. ACS NANO 2013; 7:4668-4682. [PMID: 23682947 PMCID: PMC3715887 DOI: 10.1021/nn400343z] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/30/2013] [Indexed: 06/02/2023]
Abstract
Efficient DNA delivery into cells is the prerequisite of the genetic manipulation of organisms in molecular and cellular biology as well as, ultimately, in nonviral gene therapy. Current reagents, however, are relatively inefficient, and structure-activity relationships to guide their improvement are hard to come by. We now explore peptide dendrimers as a new type of transfection reagent and provide a quantitative framework for their evaluation. A collection of dendrimers with cationic and hydrophobic amino acid motifs (such as KK, KA, KH, KL, and LL) distributed across three dendrimer generations was synthesized by a solid-phase protocol that provides ready access to dendrimers in milligram quantities. In conjunction with a lipid component (DOTMA/DOPE), the best reagent, G1,2,3-KL ((LysLeu)8(LysLysLeu)4(LysLysLeu)2LysGlySerCys-NH2), improves transfection by 6-10-fold over commercial reagents under their respective optimal conditions. Emerging structure-activity relationships show that dendrimers with cationic and hydrophobic residues distributed in each generation are transfecting most efficiently. The trigenerational dendritic structure has an advantage over a linear analogue worth up to an order of magnitude. The success of placing the decisive cationic charge patterns in inner shells rather than previously on the surface of macromolecules suggests that this class of dendrimers significantly differs from existing transfection reagents. In the future, this platform may be tuned further and coupled to cell-targeting moieties to enhance transfection and cell specificity.
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Affiliation(s)
- Albert Kwok
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, United Kingdom
| | - Gabriela A. Eggimann
- Department of Chemistry & Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Jean-Louis Reymond
- Department of Chemistry & Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Tamis Darbre
- Department of Chemistry & Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Florian Hollfelder
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, United Kingdom
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15
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Hsu CY, Uludağ H. Cellular uptake pathways of lipid-modified cationic polymers in gene delivery to primary cells. Biomaterials 2012; 33:7834-48. [DOI: 10.1016/j.biomaterials.2012.06.093] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 06/29/2012] [Indexed: 10/28/2022]
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16
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A Combinatorial Library of Bi-functional Polymeric Vectors for siRNA Delivery In Vitro. Pharm Res 2012; 30:362-76. [DOI: 10.1007/s11095-012-0876-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Accepted: 08/23/2012] [Indexed: 01/28/2023]
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17
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Yamada Y, Nomura T, Harashima H, Yamashita A, Yui N. Post-nuclear gene delivery events for transgene expression by biocleavable polyrotaxanes. Biomaterials 2012; 33:3952-8. [PMID: 22386920 DOI: 10.1016/j.biomaterials.2012.01.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2012] [Accepted: 01/27/2012] [Indexed: 11/18/2022]
Abstract
A quantitative comparison between nuclear DNA release from carriers and their transfection activity would be highly useful for improving the effectiveness of non-viral gene vectors. We previously reported that, for condensed DNA particles, a close relationship exists between the efficiency of DNA release and transfection activity, when biocleavable polyrotaxanes (DMAE-SS-PRX), in which the cationic density can be easily controlled. In this study, we first investigated the efficiencies of DNA release from condensed DNA particles with various types of DMAE-SS-PRX. The findings indicate that an optimal cationic density in DMAE-SS-PRX exists for DNA release. We then packaged condensed DNA particles in a multifunctional envelope-type nano device (MEND), and evaluated their transfection activities. The results showed that the transfection activity was increased and this increase was, to some extent, dependent on the efficiency of the DNA release. However, transfection activity decreased, when the value for the efficiency of DNA release was higher than a certain value. An investigation of the fate of intranuclear DNA indicated that a very high efficiency of DNA release has a positive influence on transcription, however, it would inhibit the post-transcription process; nuclear mRNA export, translation and related processes. Such information provides a new viewpoint for the development of cationic polymer-based vectors.
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Affiliation(s)
- Yuma Yamada
- Laboratory for Molecular Design of Pharmaceutics, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
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18
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Lactose-ornithine bolaamphiphiles for efficient gene delivery in vitro. Int J Pharm 2012; 423:392-400. [DOI: 10.1016/j.ijpharm.2011.12.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 12/14/2011] [Indexed: 01/25/2023]
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19
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Yu H, Chen Y. Nanotechnology for DNA and RNA delivery. Nanomedicine (Lond) 2012. [DOI: 10.1533/9780857096449.2.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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20
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Kanda G, Ochiai H, Harashima H, Kamiya H. CREB-binding protein transcription activation domain for enhanced transgene expression by a positive feedback system. J Biotechnol 2012; 157:7-11. [DOI: 10.1016/j.jbiotec.2011.09.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 08/30/2011] [Accepted: 09/16/2011] [Indexed: 01/28/2023]
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21
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Díaz-Moscoso A, Guilloteau N, Bienvenu C, Méndez-Ardoy A, Jiménez Blanco JL, Benito JM, Le Gourriérec L, Di Giorgio C, Vierling P, Defaye J, Ortiz Mellet C, García Fernández JM. Mannosyl-coated nanocomplexes from amphiphilic cyclodextrins and pDNA for site-specific gene delivery. Biomaterials 2011; 32:7263-73. [DOI: 10.1016/j.biomaterials.2011.06.025] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Accepted: 06/09/2011] [Indexed: 12/17/2022]
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22
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Fukunaga S, Kanda G, Tanase J, Harashima H, Ohyama T, Kamiya H. A designed curved DNA sequence remarkably enhances transgene expression from plasmid DNA in mouse liver. Gene Ther 2011; 19:828-35. [DOI: 10.1038/gt.2011.127] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Liu Z, Zheng M, Meng F, Zhong Z. Non-viral gene transfection in vitro using endosomal pH-sensitive reversibly hydrophobilized polyethylenimine. Biomaterials 2011; 32:9109-19. [PMID: 21890198 DOI: 10.1016/j.biomaterials.2011.08.017] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Accepted: 08/08/2011] [Indexed: 11/27/2022]
Abstract
Reversibly hydrophobilized 10 kDa polyethylenimine (PEI) based on rapidly acid-degradable acetal-containing hydrophobe was designed for nontoxic and highly efficient non-viral gene transfer. Water soluble PEI derivatives with average 5, 9 and 14 units of pH-sensitive 2,4,6-trimethoxybenzylidene-tris(hydroxymethyl)ethane (TMB-THME) hydrophobe per molecule, denoted as PEI-g-(TMB-THME)(n), were readily obtained by treating 10 kDa PEI with varying amounts of TMB-THME-nitrophenyl chloroformate. Gel retardation assays showed that all PEI-g-(TMB-THME)(n) derivatives could effectively condense DNA at an N/P ratio of 5/1. Notably, polyplexes of PEI-g-(TMB-THME)(n) derivatives had smaller sizes (about 100∼170 nm) and higher surface charges (+25 ∼ +43 mV) than the parent 10 kDa PEI at the same N/P ratios ranging from 10/1 to 40/1. MTT assays revealed that these PEI-g-(TMB-THME)(n) derivatives were practically non-toxic at polymer concentrations used in transfection experiments. The acetal degradation of PEI-g-(TMB-THME)(9) was shown to be highly pH dependent in which half lives of 1.3, 2.8 and 11 h were determined for pH 4.0, 5.0 and 6.0, respectively, while negligible hydrolysis (<12%) was observed after 24 h at pH 7.4. Gel electrophoresis, dynamic light scattering (DLS) and zeta potential analyses indicated that polyplexes formed at an N/P ratio of 10/1 were dissociated following 5 h incubation at pH 5.0, highlighting the importance of hydrophobic TMB-THME moieties in DNA condensation and supporting that acetal hydrolysis in endosomes would facilitate DNA release. Notably, in vitro transfection experiments performed at N/P ratios of 10/1 and 20/1 in HeLa, 293T, HepG2 and KB cells using plasmid pGL3 expressing luciferase as the reporter gene showed that reversibly hydrophobilized PEIs had superior transfection activity to 25 kDa PEI control. For example, polyplexes of PEI-g-(TMB-THME)(14) showed about 235-fold and 175-fold higher transfection efficiency as compared to 10 kDa PEI in HeLa cells in serum-free and 10% serum media, respectively, which were approximately 7-fold and 16-fold higher than 25 kDa PEI formulation at its optimal N/P ratio under otherwise the same conditions. Confocal laser scanning microscope (CLSM) studies confirmed that PEI-g-(TMB-THME)(14) efficiently delivered Cy5-labeled DNA to the nuclei of HeLa cells. These endosomal pH-sensitive reversibly hydrophobilized PEIs have great potentials for safe and efficient non-viral gene transfection.
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Affiliation(s)
- Zhaozhong Liu
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, PR China
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24
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Kudsiova L, Fridrich B, Ho J, Mustapa MFM, Campbell F, Welser K, Keppler M, Ng T, Barlow DJ, Tabor AB, Hailes HC, Lawrence MJ. Lipopolyplex Ternary Delivery Systems Incorporating C14 Glycerol-Based Lipids. Mol Pharm 2011; 8:1831-47. [DOI: 10.1021/mp2001796] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laila Kudsiova
- Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, Waterloo Campus, London SE1 9NH, U.K
| | - Barbara Fridrich
- Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, Waterloo Campus, London SE1 9NH, U.K
| | - Jimmy Ho
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - M. Firouz Mohd Mustapa
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Frederick Campbell
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Katharina Welser
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Melanie Keppler
- Randall Division of Cell and Molecular Biophysics, King’s College London, Henriette Raphael Building, Guy's Campus, London SE1 1UL, U.K
| | - Tony Ng
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
- Randall Division of Cell and Molecular Biophysics, King’s College London, Henriette Raphael Building, Guy's Campus, London SE1 1UL, U.K
| | - David J. Barlow
- Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, Waterloo Campus, London SE1 9NH, U.K
| | - Alethea B. Tabor
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Helen C. Hailes
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - M. Jayne Lawrence
- Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, Waterloo Campus, London SE1 9NH, U.K
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Rodik RV, Klymchenko AS, Jain N, Miroshnichenko SI, Richert L, Kalchenko VI, Mély Y. Virus-Sized DNA Nanoparticles for Gene Delivery Based on Micelles of Cationic Calixarenes. Chemistry 2011; 17:5526-38. [DOI: 10.1002/chem.201100154] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Indexed: 11/07/2022]
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Lamarre B, Ryadnov MG. Self-assembling viral mimetics: one long journey with short steps. Macromol Biosci 2010; 11:503-13. [PMID: 21165940 DOI: 10.1002/mabi.201000330] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Indexed: 12/14/2022]
Abstract
Recently, the Foresight Institute has pronounced six economic challenges that can be addressed through the progress of nanotechnology. One of these is the health and longevity of human life. Amongst applications anticipated to provide a solution to this challenge, gene therapy appears to be particularly promising. In theory, many diseases that result from genetic disorders can be cured by correcting defective genes. In practice, finding efficient and safe delivery vectors remains the stumbling point on the path of genetic therapies to the clinic. Viruses, otherwise the most efficient transfectors, pose safety concerns over immune reactions, whereas synthetic gene packages greatly lack the structural integrity of viruses. An ideal vector is therefore seen as a compromise between the two: a nanoscale device, which would mimic a virus and act as a virus, but would do this at the designer's whim. A strategy to achieve this is offered by the virus architecture itself, the principles of which are translated into the function via exquisitely reproducible self-assembly mechanisms. Thus, to mimic a virus is to mimic the way it is built, i.e., self-assembly. With just a few attempts made so far, the journey to an artificial virus has had a short lifetime, but the promise it holds is not expected to reduce any time soon.
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Affiliation(s)
- Baptiste Lamarre
- National Physical Laboratory, Teddington, Middlesex, TW110LW, UK
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27
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Ortiz Mellet C, García Fernández JM, Benito JM. Cyclodextrin-based gene delivery systems. Chem Soc Rev 2010; 40:1586-608. [PMID: 21042619 DOI: 10.1039/c0cs00019a] [Citation(s) in RCA: 294] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cyclodextrin (CD) history has been largely dominated by their unique ability to form inclusion complexes with guests fitting in their hydrophobic cavity. Chemical funcionalization was soon recognized as a powerful mean for improving CD applications in a wide range of fields, including drug delivery, sensing or enzyme mimicking. However, 100 years after their discovery, CDs are still perceived as novel nanoobjects of undeveloped potential. This critical review provides an overview of different strategies to promote interactions between CD conjugates and genetic material by fully exploiting the inside-outside/upper-lower face anisotropy of the CD nanometric platform. Covalent modification, self-assembling and supramolecular ligation can be put forward with the ultimate goal to build artificial viruses for programmed and efficient gene therapy (222 references).
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Affiliation(s)
- Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 553, E-41071 Sevilla, Spain.
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28
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Jain N, Arntz Y, Goldschmidt V, Duportail G, Mély Y, Klymchenko AS. New Unsymmetrical Bolaamphiphiles: Synthesis, Assembly with DNA, and Application for Gene Delivery. Bioconjug Chem 2010; 21:2110-8. [DOI: 10.1021/bc100334t] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Namrata Jain
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
| | - Youri Arntz
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
| | - Valérie Goldschmidt
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
| | - Guy Duportail
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
| | - Yves Mély
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
| | - Andrey S. Klymchenko
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Université de Strasbourg, Faculté de Pharmacie, 74, Route du Rhin, 67401 ILLKIRCH Cedex, France
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29
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Zhang Z, Yang C, Duan Y, Wang Y, Liu J, Wang L, Kong D. Poly(ethylene glycol) analogs grafted with low molecular weight poly(ethylene imine) as non-viral gene vectors. Acta Biomater 2010; 6:2650-7. [PMID: 20114089 DOI: 10.1016/j.actbio.2010.01.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2009] [Revised: 12/26/2009] [Accepted: 01/19/2010] [Indexed: 01/26/2023]
Abstract
A novel class of non-viral gene vectors consisting of low molecular weight poly(ethylene imine) (PEI) (molecular weight 800 Da) grafted onto degradable linear poly(ethylene glycol) (PEG) analogs was synthesized. First, a Michael addition reaction between poly(ethylene glycol) diacrylates (PEGDA) (molecular weight 258 Da) and d,l-dithiothreitol (DTT) was carried out to generate a linear polymer (PEG-DTT) having a terminal thiol, methacrylate and pendant hydroxyl functional groups. Five PEG-DTT analogs were synthesized by varying the molar ratio of diacrylates to thiols from 1.2:1 to 1:1.2. Then PEI (800 Da) was grafted onto the main chain of the PEG-DTTs using 1,1'-carbonyldiimidazole as the linker. The above reaction gave rise to a new class of non-viral gene vectors, (PEG-DTT)-g-PEI copolymers, which can effectively complex DNA to form nanoparticles. The molecular weights and structures of the copolymers were characterized by gel permeation chromatography, (1)H nuclear magnetic resonance and Fourier transform infrared spectroscopy. The size of the nanoparticles was<200 nm and the surface charge of the nanoparticles, expressed as the zeta potential, was between+20 and+40 mV. Cytotoxicity assays showed that the copolymers exhibited much lower cytotoxicities than high molecular weight PEI (25 kDa). Transfection was performed in cultured HeLa, HepG2, MCF-7 and COS-7 cells. The copolymers showed higher transfection efficiencies than PEI (25 kDa) tested in four cell lines. The presence of serum (up to 30%) had no inhibitory effect on the transfection efficiency. These results indicate that this new class of non-viral gene vectors may be a promising gene carrier that is worth further investigation.
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Affiliation(s)
- Zhenfang Zhang
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin, PR China
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30
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Halama A, Kuliński M, Librowski T, Lochyński S. Polymer-based non-viral gene delivery as a concept for the treatment of cancer. Pharmacol Rep 2010; 61:993-9. [PMID: 20081233 DOI: 10.1016/s1734-1140(09)70160-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 11/09/2009] [Indexed: 10/25/2022]
Abstract
Gene therapy has become a promising technique for the treatment of cancer. Nevertheless, the success of gene therapy depends on the effectiveness of the vector. The challenge of a gene carrier is to deliver exogenous DNA from the site of administration into the nucleus of the appropriate target cell. Polymer-based vectors are biologically safe, have low production costs and are efficient tools for gene therapy. Although non-degradable polyplexes exhibit high gene expression levels, their application potential is limited due to their inability to be effectively eliminated, which results in cytotoxicity. The development of biodegradable polymers has allowed for high levels of transfection without cytotoxicity. For site-specific targeting of polyplexes, further modifications, such as incorporation of ligands, can be performed. Most expectations have been addressed to polyplexes architecture according it dynamic response with the microenvironment.
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Affiliation(s)
- Anna Halama
- Department of Bioorganic Chemistry, Wrocław University of Technology, Wybrzeze Wyspiańskiego 27, PL 50-370 Wrocław, Poland
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31
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Réthoré G, Mathew A, Naik H, Pandit A. Preparation of Chitosan/Polyglutamic Acid Spheres Based on the Use of Polystyrene Template as a Nonviral Gene Carrier. Tissue Eng Part C Methods 2009; 15:605-13. [DOI: 10.1089/ten.tec.2008.0581] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Gildas Réthoré
- National Centre for Biomedical Engineering Science, National University of Ireland, Galway, Ireland
| | - Asha Mathew
- National Centre for Biomedical Engineering Science, National University of Ireland, Galway, Ireland
| | - Hemantkumar Naik
- National Centre for Biomedical Engineering Science, National University of Ireland, Galway, Ireland
| | - Abhay Pandit
- National Centre for Biomedical Engineering Science, National University of Ireland, Galway, Ireland
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32
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Hillaireau H, Couvreur P. Nanocarriers' entry into the cell: relevance to drug delivery. Cell Mol Life Sci 2009; 66:2873-96. [PMID: 19499185 PMCID: PMC11115599 DOI: 10.1007/s00018-009-0053-z] [Citation(s) in RCA: 1040] [Impact Index Per Article: 69.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2009] [Revised: 05/06/2009] [Accepted: 05/18/2009] [Indexed: 11/28/2022]
Abstract
Nanocarriers offer unique possibilities to overcome cellular barriers in order to improve the delivery of various drugs and drug candidates, including the promising therapeutic biomacromolecules (i.e., nucleic acids, proteins). There are various mechanisms of nanocarrier cell internalization that are dramatically influenced by nanoparticles' physicochemical properties. Depending on the cellular uptake and intracellular trafficking, different pharmacological applications may be considered. This review will discuss these opportunities, starting with the phagocytosis pathway, which, being increasingly well characterized and understood, has allowed several successes in the treatment of certain cancers and infectious diseases. On the other hand, the non-phagocytic pathways encompass various complicated mechanisms, such as clathrin-mediated endocytosis, caveolae-mediated endocytosis and macropinocytosis, which are more challenging to control for pharmaceutical drug delivery applications. Nevertheless, various strategies are being actively investigated in order to tailor nanocarriers able to deliver anticancer agents, nucleic acids, proteins and peptides for therapeutic applications by these non-phagocytic routes.
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Affiliation(s)
- Hervé Hillaireau
- School of Engineering and Applied Sciences, Harvard University, 40 Oxford Street, Cambridge, MA 02138 USA
| | - Patrick Couvreur
- Faculté de Pharmacie, UMR CNRS 8612, Université Paris-Sud 11, IFR 141, 5 rue J.B. Clément, 92296 Châtenay Malabry, France
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Mori T, Ishikawa A, Nemoto Y, Kambe N, Sakamoto M, Nakayama Y. Development of a Novel Nonviral Gene Silencing System That Is Effective Both in Vitro and in Vivo by Using a Star-Shaped Block Copolymer (Star Vector). Bioconjug Chem 2009; 20:1262-9. [DOI: 10.1021/bc9001294] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taisuke Mori
- Department of Pathology, School of Medicine, Keio University, Sinjuku-ku, Tokyo, 160-8582, Japan, Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, 565-8565, Japan, Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan, and Chemical Products Development Department, Bridgestone Company
| | - Ayaka Ishikawa
- Department of Pathology, School of Medicine, Keio University, Sinjuku-ku, Tokyo, 160-8582, Japan, Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, 565-8565, Japan, Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan, and Chemical Products Development Department, Bridgestone Company
| | - Yasushi Nemoto
- Department of Pathology, School of Medicine, Keio University, Sinjuku-ku, Tokyo, 160-8582, Japan, Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, 565-8565, Japan, Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan, and Chemical Products Development Department, Bridgestone Company
| | - Nobuaki Kambe
- Department of Pathology, School of Medicine, Keio University, Sinjuku-ku, Tokyo, 160-8582, Japan, Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, 565-8565, Japan, Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan, and Chemical Products Development Department, Bridgestone Company
| | - Michiie Sakamoto
- Department of Pathology, School of Medicine, Keio University, Sinjuku-ku, Tokyo, 160-8582, Japan, Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, 565-8565, Japan, Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan, and Chemical Products Development Department, Bridgestone Company
| | - Yasuhide Nakayama
- Department of Pathology, School of Medicine, Keio University, Sinjuku-ku, Tokyo, 160-8582, Japan, Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, 565-8565, Japan, Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan, and Chemical Products Development Department, Bridgestone Company
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Mustapa MFM, Grosse SM, Kudsiova L, Elbs M, Raiber EA, Wong JB, Brain APR, Armer HEJ, Warley A, Keppler M, Ng T, Lawrence MJ, Hart SL, Hailes HC, Tabor AB. Stabilized Integrin-Targeting Ternary LPD (Lipopolyplex) Vectors for Gene Delivery Designed To Disassemble Within the Target Cell. Bioconjug Chem 2009; 20:518-32. [DOI: 10.1021/bc800450r] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- M. Firouz Mohd Mustapa
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Stephanie M. Grosse
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Laila Kudsiova
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Martin Elbs
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Eun-Ang Raiber
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - John B. Wong
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Anthony P. R. Brain
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Hannah E. J. Armer
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Alice Warley
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Melanie Keppler
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Tony Ng
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - M. Jayne Lawrence
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Stephen L. Hart
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Helen C. Hailes
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
| | - Alethea B. Tabor
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H 0AJ, Wolfson Centre for Gene Therapy of Childhood Disease, Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, School of Biomedical and Health Sciences, Pharmaceutical Science Research Division, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, Centre for Ultrastructure Imaging, King’s College London, New Hunt’s House,
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35
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Guilloteau N, Gourriérec LL, Fabio K, Giorgio CD, Greiner J, Vierling P. Efficient solid-phase synthesis of perfluoroalkylated dimerizable cationic detergents for gene delivery. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.11.072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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36
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Wang XL, Xu R, Lu ZR. A peptide-targeted delivery system with pH-sensitive amphiphilic cell membrane disruption for efficient receptor-mediated siRNA delivery. J Control Release 2008; 134:207-13. [PMID: 19135104 DOI: 10.1016/j.jconrel.2008.11.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Accepted: 11/09/2008] [Indexed: 10/21/2022]
Abstract
The efficient delivery of therapeutic siRNA into cells of interest is a critical challenge to broad application of RNAi. In this study, we developed a peptide-targeted delivery system for highly efficient receptor-mediated cellular siRNA delivery. The targeted delivery system was readily prepared by in situ functionalization of a polymerizable pH-sensitive amphiphilic surfactant, N-(1-aminoethyl)iminobis[N-(oleicyl-cysteinyl-histinyl-1-aminoethyl)propionamide] (EHCO) and self-assembly with siRNA. The intrinsic pH-sensitive amphiphilicity of EHCO at pH 5-6 was able to induce cell membrane disruption at endosomal pH and facilitate endosomal escape of the siRNA nanoparticles after internalization. The siRNA/EHCO nanoparticles and PEGylated siRNA/EHCO nanoparticles were not cytotoxic as compared to PEI/siRNA or TransFast/siRNA nanoparticles. siRNA/EHCO nanoparticles resulted in higher siRNA delivery efficiency than PEI and TransFast. The PEGylation of the siRNA/EHCO nanoparticles significantly reduced non-specific cell uptake. The incorporation of a bombesin peptide via a PEG spacer resulted in specific cellular uptake and high gene silencing efficiency in CHO-d1EGFP cells with overexpression of bombesin receptors. Receptor-mediated endocytosis and pH-sensitive amphiphilic endosomal escape are the advantageous features of the targeted siRNA delivery system for highly efficient cell-specific siRNA delivery. This novel targeted delivery system holds a great promise for systemic and targeted delivery of therapeutic siRNA.
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Affiliation(s)
- Xu-Li Wang
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84108, USA
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37
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Liu Y, Singh RJ, Usa K, Netzel BC, Liang M. Renal medullary 11 beta-hydroxysteroid dehydrogenase type 1 in Dahl salt-sensitive hypertension. Physiol Genomics 2008; 36:52-8. [PMID: 18826995 DOI: 10.1152/physiolgenomics.90283.2008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The Dahl salt-sensitive rat is a widely used model of human salt-sensitive forms of hypertension. The kidney plays an important role in the pathogenesis of Dahl salt-sensitive hypertension, but the molecular mechanisms involved remain a subject of intensive investigation. Gene expression profiling studies suggested that 11 beta-hydroxysteroid dehydrogenase type 1 might be dysregulated in the renal medulla of Dahl salt-sensitive rats. Additional analysis confirmed that renal medullary expression of 11 beta-hydroxysteroid dehydrogenase type 1 was downregulated by a high-salt diet in SS-13BN rats, a consomic rat strain with reduced blood pressure salt sensitivity, but not in Dahl salt-sensitive rats. 11 beta-Hydroxysteroid dehydrogenase type 1 is known to convert inactive 11-dehydrocorticosterone to active corticosterone. The urinary corticosterone/11-dehydrocorticosterone ratio as well as urinary excretion of corticosterone was higher in Dahl salt-sensitive rats than in SS-13BN rats. Knockdown of renal medullary 11 beta-hydroxysteroid dehydrogenase type 1 with small-interfering RNA attenuated the early phase of salt-induced hypertension in Dahl salt-sensitive rats and reduced urinary excretion of corticosterone. Knockdown of 11 beta-hydroxysteroid dehydrogenase type 1 did not affect blood pressure in SS-13BN rats. Long-term attenuation of salt-induced hypertension was achieved with small hairpin RNA targeting renal medullary 11 beta-hydroxysteroid dehydrogenase type 1. In summary, we have demonstrated that suppression of 11 beta-hydroxysteroid dehydrogenase type 1 expression in the renal medulla attenuates salt-induced hypertension in Dahl salt-sensitive rats.
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Affiliation(s)
- Yong Liu
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
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38
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Kwon EJ, Bergen JM, Pun SH. Application of an HIV gp41-Derived Peptide for Enhanced Intracellular Trafficking of Synthetic Gene and siRNA Delivery Vehicles. Bioconjug Chem 2008; 19:920-7. [DOI: 10.1021/bc700448h] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Posypanova GA, Chuvilin AN, Kireeva NN, Severin ES, Pozmogova GE. Complexes of telomeric oligonucleotides with the PGEk protein vector: Internalization by target cells and antiproliferative activity. Mol Biol 2008. [DOI: 10.1134/s0026893308020118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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40
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An efficient mixed solid–liquid phase synthesis of a heterobifunctional amphiphilic PEG–NH2 derivative and its conjugation to folic acid. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.12.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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41
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Ishikawa A, Zhou YM, Kambe N, Nakayama Y. Enhancement of Star Vector-Based Gene Delivery to Endothelial Cells by Addition of RGD-Peptide. Bioconjug Chem 2008; 19:558-61. [DOI: 10.1021/bc700385r] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ayaka Ishikawa
- Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, Japan and Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka Japan
| | - Yue-Min Zhou
- Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, Japan and Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka Japan
| | - Nobuaki Kambe
- Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, Japan and Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka Japan
| | - Yasuhide Nakayama
- Department of Bioengineering, Advanced Medical Engineering Center, National Cardiovascular Center Research Institute, Osaka, Japan and Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka Japan
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42
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Schmidt FHG, Hüben M, Gider B, Renault F, Teulade-Fichou MP, Weinhold E. Sequence-specific Methyltransferase-Induced Labelling (SMILing) of plasmid DNA for studying cell transfection. Bioorg Med Chem 2008; 16:40-8. [DOI: 10.1016/j.bmc.2007.04.054] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2006] [Revised: 11/10/2006] [Accepted: 04/27/2007] [Indexed: 10/23/2022]
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43
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Le Gourriérec L, Di Giorgio C, Greiner J, Vierling P. Formulation of PEG–folic acid coated nanometric DNA particles from perfluoroalkylated cationic dimerizable detergents and in vitro folate-targeted intracellular delivery. NEW J CHEM 2008. [DOI: 10.1039/b806043f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Nakayama Y, Kakei C, Ishikawa A, Zhou YM, Nemoto Y, Uchida K. Synthesis and in Vitro Evaluation of Novel Star-Shaped Block Copolymers (Blocked Star Vectors) for Efficient Gene Delivery. Bioconjug Chem 2007; 18:2037-44. [DOI: 10.1021/bc070045q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasuhide Nakayama
- Department of Bioengineering, Advanced Medical Engineering Center National Cardiovascular Center Research Institute, Division of Biotechnology and Macromolecular Chemistry, Faculty of Engineering, Hokkaido University, Chemical Products Division, Development Department, Bridgestone Company, and Department of Materials Chemistry, Faculty of Science and Technology Ryukoku University
| | - Chiaki Kakei
- Department of Bioengineering, Advanced Medical Engineering Center National Cardiovascular Center Research Institute, Division of Biotechnology and Macromolecular Chemistry, Faculty of Engineering, Hokkaido University, Chemical Products Division, Development Department, Bridgestone Company, and Department of Materials Chemistry, Faculty of Science and Technology Ryukoku University
| | - Ayaka Ishikawa
- Department of Bioengineering, Advanced Medical Engineering Center National Cardiovascular Center Research Institute, Division of Biotechnology and Macromolecular Chemistry, Faculty of Engineering, Hokkaido University, Chemical Products Division, Development Department, Bridgestone Company, and Department of Materials Chemistry, Faculty of Science and Technology Ryukoku University
| | - Yue-Min Zhou
- Department of Bioengineering, Advanced Medical Engineering Center National Cardiovascular Center Research Institute, Division of Biotechnology and Macromolecular Chemistry, Faculty of Engineering, Hokkaido University, Chemical Products Division, Development Department, Bridgestone Company, and Department of Materials Chemistry, Faculty of Science and Technology Ryukoku University
| | - Yasushi Nemoto
- Department of Bioengineering, Advanced Medical Engineering Center National Cardiovascular Center Research Institute, Division of Biotechnology and Macromolecular Chemistry, Faculty of Engineering, Hokkaido University, Chemical Products Division, Development Department, Bridgestone Company, and Department of Materials Chemistry, Faculty of Science and Technology Ryukoku University
| | - Kingo Uchida
- Department of Bioengineering, Advanced Medical Engineering Center National Cardiovascular Center Research Institute, Division of Biotechnology and Macromolecular Chemistry, Faculty of Engineering, Hokkaido University, Chemical Products Division, Development Department, Bridgestone Company, and Department of Materials Chemistry, Faculty of Science and Technology Ryukoku University
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45
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Fraley AW, Pons B, Dalkara D, Nullans G, Behr JP, Zuber G. Cationic oligonucleotide-peptide conjugates with aggregating properties enter efficiently into cells while maintaining hybridization properties and enzymatic recognition. J Am Chem Soc 2007; 128:10763-71. [PMID: 16910671 DOI: 10.1021/ja060873e] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Oligonucleotide delivery is a crucial issue for therapeutical purposes and is often addressed by conjugation to short cationic peptides although with controversial results. To further examine this mechanism, a 15-mer anionic oligonucleotide was conjugated to a cationic peptide in order to obtain a diblock compound with an overall positive charge with aggregation properties. These microaggregates were efficiently internalized in cells via the expeditious pathway used by commercial gene delivery systems. Moreover, stability of the duplex formed with the complementary sequence increased without inhibiting oligonucleotide enzyme recognition as shown by the properties of the conjugate to prime chain elongation by Taq DNA polymerase in a linear amplification/sequencing process.
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Affiliation(s)
- Andrew W Fraley
- Université Louis Pasteur de Strasbourg, Laboratoire de Chimie Génétique associé au CNRS, Faculté de Pharmacie, BP 60024, 67401 Illkirch, France
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46
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Shen F, Wen L, Yang X, Liu W. The potential application of gene therapy in the treatment of traumatic brain injury. Neurosurg Rev 2007; 30:291-8; discussion 298. [PMID: 17687574 DOI: 10.1007/s10143-007-0094-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2006] [Revised: 04/30/2007] [Accepted: 05/07/2007] [Indexed: 10/23/2022]
Abstract
Advances in molecular biology have allowed the possibility of using gene therapy in the treatment of traumatic brain injury. The major tactics involve picking out the appropriate gene target and, by controlling its specific regional expression, inhibiting neuronal cell deaths and/or promoting neuronal regeneration. This review addresses the preliminary usage of gene therapy in in vitro experiments and in animal models to treat traumatic brain injury. The gene targets with therapeutic potentials, the vectors that can be employed to deliver the candidate genes, as well as different approaches for gene therapy are discussed in detail in this review. Despite the existence of several major obstacles to making it practical and effective, gene therapy could provide a new strategy for treatment of the traumatically injured brain.
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Affiliation(s)
- Fang Shen
- Department of Neurosurgery, First Affiliated Hospital, College of Medicine, Zhejiang University, No. 79 Qingchun Road, Hangzhou City, 310003 Zhejiang, People's Republic of China.
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47
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Li Y, Cui L, Li Q, Jia L, Xu Y, Fang Q, Cao A. Novel Symmetric Amphiphilic Dendritic Poly(l-lysine)-b-Poly(l-lactide)-b-Dendritic Poly(l-lysine) with High Plasmid DNA Binding Affinity as a Biodegradable Gene Carrier. Biomacromolecules 2007; 8:1409-16. [PMID: 17458996 DOI: 10.1021/bm0701806] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study communicates the molecular design, preparation, and biological application of novel symmetric amphiphilic polycationic dendritic poly(L-lysine)-b-poly(L-lactide)-b-dendritic poly(L-lysine) D2-LLA15-D2 bearing two two-generation poly(L-lysine) PLL dendrons D2 and a central hydrophobic biodegradable poly(L-lactide) block LLA15. First, an amino-protected precursor of L1-OH was designed and synthesized and was further employed to prepare L1-LLA15 with an organic 4-(dimethylamino)-pyridine-mediated living-ring-opening polymerization of l-lactide. Subsequently, the hydroxy end-capped L1-LLA15 was coupled to synthesize a new triblock L1-LLA15-L1 with two one-generation amino-protected PLL dendrons L1. Furthermore, with a repeated trifluoroacetic-acid-mediated amino deprotection-protection cycle, new amphiphilic triblock D2-LLA15-D2 was successfully prepared. By means of NMR, mass spectrometry, and gel permeation chromatography, these synthetic precursors and final amphiphilic product were characterized to bear well-defined triblock structures. In addition, this synthesized amphiphilic triblock polycationic macromolecule was applied as a new polycationic plasmid DNA carrier, and its DNA binding affinity was examined via an agarose electrophoresis and a fluorescence titration assay along with two important references of hydrophilic dendritic D2-HEX-D2 and double-hydrophilic D2-PEG-4K-D2 bearing the same two D2 dendrons; much enhanced DNA binding affinity was interestingly revealed for the new amphiphilic structural D2-LLA15-D2. Moreover, the assembled polyplex microparticles of plasmid DNA/polycationic carrier were further analyzed by dynamic light scattering and transmission electron microscopy, indicating their averaged nanoparticle size around 150-200 nm. As for the cytotoxicity of the new D2-LLA15-D2, MTT assays were conducted with a human hepatocellular carcinoma cell line (SMMC-7721), indicating a very low cytotoxicity as compared with commercial linear PLL-23K and PEI-2K, and a DNase I degradation of the assembled polyplex particles was also done in the HBS buffer solution to evaluate their stabilities. Finally, employing the new amphiphilic D2-LLA15-D2 as gene carrier, in vitro gene transfection experiments were conducted with the SMMC-7721 cell line, indicating a transfection efficiency increase of at least 10 times higher than that of the naked plasmid DNA under a N/P charge ratio of 10. Therefore, these interesting results may provide a new possible way to construct efficient polycationic macromolecular gene carriers with low toxicity and less expensive low-generation PLL dendrons.
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Affiliation(s)
- Yang Li
- Laboratory for Polymer Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China
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48
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Nagasaki T, Shinkai S. The concept of molecular machinery is useful for design of stimuli-responsive gene delivery systems in the mammalian cell. J INCL PHENOM MACRO 2007. [DOI: 10.1007/s10847-007-9303-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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49
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Sethuraman VA, Bae YH. TAT peptide-based micelle system for potential active targeting of anti-cancer agents to acidic solid tumors. J Control Release 2006; 118:216-24. [PMID: 17239466 PMCID: PMC1963443 DOI: 10.1016/j.jconrel.2006.12.008] [Citation(s) in RCA: 263] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2006] [Revised: 12/02/2006] [Accepted: 12/06/2006] [Indexed: 12/25/2022]
Abstract
A novel drug targeting system for acidic solid tumors has been developed based on ultra pH-sensitive polymer and cell penetrating TAT. The delivery system consisted of two components: 1) A polymeric micelle that has a hydrophobic core made of poly(l-lactic acid) (PLLA) and a hydrophilic shell consisting of polyethylene glycol (PEG) conjugated to TAT (TAT micelle), 2) an ultra pH-sensitive diblock copolymer of poly(methacryloyl sulfadimethoxine) (PSD) and PEG (PSD-b-PEG). The anionic PSD is complexed with cationic TAT of the micelles to achieve the final carrier, which could systemically shield the micelles and expose them at slightly acidic tumor pH. TAT micelles had particle sizes between 20 and 45 nm and their critical micelle concentrations were 3.5 mg/l to 5.5 mg/l. The TAT micelles, upon mixing with pH-sensitive PSD-b-PEG, showed a slight increase in particle size between pH 8.0 and 6.8 (60-90 nm), indicating complexation. As the pH was decreased (pH 6.6 to 6.0) two populations were observed, one that of normal TAT micelles (45 nm) and the other of aggregated hydrophobic PSD-b-PEG. Zeta potential measurements showed similar trend substantiating the shielding/deshielding process. Flow cytometry and confocal microscopy showed significantly higher uptake of TAT micelles at pH 6.6 compared to pH 7.4 indicating shielding at normal pH and deshielding at tumor pH. The confocal microscopy indicated that the TAT not only translocates into the cells but is also seen on the surface of the nucleus. These results strongly indicate that the above micelles would be able to target any hydrophobic drug near the nucleus.
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Affiliation(s)
| | - You Han Bae
- * To whom correspondance should be addressed.
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50
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Dizhe EB, Ignatovich IA, Burov SV, Pohvoscheva AV, Akifiev BN, Efremov AM, Perevozchikov AP, Orlov SV. Complexes of DNA with cationic peptides: Conditions of formation and factors effecting internalization by mammalian cells. BIOCHEMISTRY (MOSCOW) 2006; 71:1350-6. [PMID: 17223788 DOI: 10.1134/s0006297906120108] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This work was devoted to the study of conditions of the formation of DNA/K8 complex and analysis of factors effecting the entry of DNA/K8 complex into mammalian cells in comparison with DNA complexes with arginine-rich fragment (47-57) of human immunodeficiency virus (type 1) transcription factor Tat (Tat peptide). The stoichiometry of positively charged DNA/K8 complexes has been studied for the first time. Non-cooperative character of DNA-K8 interaction was revealed. It has been shown that along with the positive charge of such complexes, the presence of an excess of free K8 peptide in the culture medium is a necessary condition for maximal efficiency of cell transfection with DNA/K8 complexes. A stimulatory effect of free K8 peptide on the efficiency of mammalian cell transfection by DNA/K8 complexes is likely to be mediated by the interactions of cationic peptide K8 with negatively charged proteoglycans on the cell surface, which leads to protection of DNA/K8 complexes from disruption by cellular heparan sulfates. However, the protective role of free cationic peptides depends not only on their positive charge, but also on the primary structure of the peptide. In contrast with the results obtained for DNA complexes with molecular conjugates based on poly-L-lysine, the aggregation of DNA/K8 complexes leads to a significant increase in the expression of transferred gene.
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Affiliation(s)
- E B Dizhe
- Institute of Experimental Medicine, Russian Academy of Medical Sciences, St. Petersburg, 197376, Russia
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