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Lounis FM, Chamieh J, Leclercq L, Gonzalez P, Rossi JC, Cottet H. Effect of Dendrigraft Generation on the Interaction between Anionic Polyelectrolytes and Dendrigraft Poly(l-Lysine). Polymers (Basel) 2018; 10:E45. [PMID: 30966081 PMCID: PMC6415173 DOI: 10.3390/polym10010045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 12/18/2017] [Accepted: 12/28/2017] [Indexed: 12/22/2022] Open
Abstract
In this present work, three generations of dendrigraft poly(l-Lysine) (DGL) were studied regarding their ability to interact with linear poly (acrylamide-co-2-acrylamido-2-methyl-1-propanesulfonate) (PAMAMPS) of different chemical charge densities (30% and 100%). Frontal analysis continuous capillary electrophoresis (FACCE) was successfully applied to determine binding constants and binding stoichiometries. The effect of DGL generation on the interaction was evaluated for the first three generations (G2, G3, and G4) at different ionic strengths, and the effect of ligand topology (linear PLL vs. dendrigraft DGL) on binding parameters was evaluated. An increase of the biding site constants accompanied with a decrease of the DGL-PAMAMPS (n:1) stoichiometry was observed for increasing DGL generation. The logarithm of the global binding constants decreased linearly with the logarithm of the ionic strength. This double logarithmic representation allowed determining the extent of counter-ions released from the association of DGL molecules onto one PAMAMPS chain that was compared to the total entropic reservoir constituted by the total number of condensed counter-ions before the association.
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Affiliation(s)
| | - Joseph Chamieh
- IBMM, Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, France.
| | - Laurent Leclercq
- IBMM, Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, France.
| | - Philippe Gonzalez
- IBMM, Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, France.
| | | | - Hervé Cottet
- IBMM, Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, France.
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2
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Lyulin SV. Correlation between overcharging peculiarities and the solubility of interpolyelectrolyte complexes. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2016.11.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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3
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Angelescu DG, Linse P. Branched-linear polyion complexes investigated by Monte Carlo simulations. SOFT MATTER 2014; 10:6047-6058. [PMID: 24999910 DOI: 10.1039/c4sm01055h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Complexes formed by one charged and branched copolymer with an oppositely charged and linear polyion have been investigated by Monte Carlo simulations. A coarse-grained description has been used, in which the main chain of the branched polyion and the linear polyion possess the same absolute charge and charge density. The spatial extension and other structural properties, such as bond-angle orientational correlation function, asphericity, and scaling analysis of formed complexes, at varying branching density and side-chain length of the branched polyion, have been explored. In particular, the balance between cohesive Coulomb attraction and side-chain repulsions resulted in two main structures of a polyion complex. These structures are (i) a globular polyion core surrounded by side chains appearing at low branching density and (ii) an extended polyion core with side chains still being expelled at high branching density. The globule-to-extended transition occurred at a crossover branching density being practically independent of the side chain length.
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Affiliation(s)
- Daniel G Angelescu
- Romanian Academy, "Ilie Murgulescu" Institute of Physical Chemistry, Splaiul Independentei 202, 060021 Bucharest, Romania.
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4
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Pandav G, Ganesan V. Computer Simulations of Dendrimer–Polyelectrolyte Complexes. J Phys Chem B 2014; 118:10297-310. [DOI: 10.1021/jp505645r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Gunja Pandav
- Department
of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Venkat Ganesan
- Department of Chemical Engineering and Institute for
Computational and Engineering Sciences, University of Texas at Austin, Austin, Texas 78712, United States
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5
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Yu S, Larson RG. Monte-Carlo simulations of PAMAM dendrimer-DNA interactions. SOFT MATTER 2014; 10:5325-5336. [PMID: 24924736 DOI: 10.1039/c4sm00452c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We use Monte Carlo simulations to determine the influence of poly(amido amine) (PAMAM) dendrimer size and charge on its interactions with double-stranded DNA conformation and interaction strength. To achieve a compromise between simulation speed and molecular detail, we combine the coarse-grained DNA model of de Pablo et al. which resolves each DNA base using three beads - and thereby retains the double-helix structure - with a dendrimer model with resolution similar to that of the DNA. The resulting predictions of the effects of dendrimer generation, dendrimer surface charge density, and salt concentration on dendrimer-DNA complexes are in agreement with both experiments and all-atom MD simulations. The model predicts that DNA wraps a fully charged G5 or G6 dendrimer at low salt concentration (10 mM) similarly to a histone octamer, and for the G5 dendrimer, DNA super helices with both handednesses occur. At salt concentrations above 50 mM, or when a high fraction of dendrimer surface charges are neutralized by acetylation, DNA adheres but does not compactly wrap the dendrimer, in agreement with experimental findings. We are also able to simulate pairs of dendrimers binding to the same DNA strand. Thus, our mesoscale simulation not only elucidates dendrimer-DNA interactions, but also provides a methodology for efficiently simulating chromatin formation and other cationic macroion-DNA complexes.
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Affiliation(s)
- Shi Yu
- Chemical Engineering Department, University of Michigan, Ann Arbor 48109, USA.
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6
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Larin SV, Darinskii AA. Interaction of interpolyelectrolyte complexes formed by a linear polyelectrolyte and dendrimers or spheres. POLYMER SCIENCE SERIES A 2014. [DOI: 10.1134/s0965545x14020084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Qamhieh K, Khaleel AA. Analytical model study of complexation of dendrimer as an ion penetrable sphere with DNA. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2013.01.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Vorontsov-Velyaminov PN, Yurchenko AA, Antyukhova MA, Silantyeva IA, Antipina AY. Entropic sampling of polymers: A chain near a wall, polyelectrolytes, star-shaped polymers. POLYMER SCIENCE SERIES C 2013. [DOI: 10.1134/s1811238213060052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Tian WD, Ma YQ. Theoretical and computational studies of dendrimers as delivery vectors. Chem Soc Rev 2013; 42:705-27. [PMID: 23114420 DOI: 10.1039/c2cs35306g] [Citation(s) in RCA: 179] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
It is a great challenge for nanomedicine to develop novel dendrimers with maximum therapeutic potential and minimum side-effects for drug and gene delivery. As delivery vectors, dendrimers must overcome lots of barriers before delivering the bio-agents to the target in the cell. Extensive experimental investigations have been carried out to elucidate the physical and chemical properties of dendrimers and explore their behaviors when interacting with biomolecules, such as gene materials, proteins, and lipid membranes. As a supplement of the experimental techniques, it has been proved that computer simulations could facilitate the progress in understanding the delivery process of bioactive molecules. The structures of dendrimers in dilute solutions have been intensively investigated by monomer-resolved simulations, coarse-grained simulations, and atom-resolved simulations. Atomistic simulations have manifested that the hydrophobic interactions, hydrogen-bond interactions, and electrostatic attraction play critical roles in the formation of dendrimer-drug complexes. Multiscale simulations and statistical field theories have uncovered some physical mechanisms involved in the dendrimer-based gene delivery systems. This review will focus on the current status and perspective of theoretical and computational contributions in this field in recent years. (275 references).
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Affiliation(s)
- Wen-de Tian
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, China
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10
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Eleftheriou E, Karatasos K. Modeling the formation of ordered nano-assemblies comprised by dendrimers and linear polyelectrolytes: the role of Coulombic interactions. J Chem Phys 2013; 137:144905. [PMID: 23061863 DOI: 10.1063/1.4757666] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Models of mixtures of peripherally charged dendrimers with oppositely charged linear polyelectrolytes in the presence of explicit solvent are studied by means of molecular dynamics simulations. Under the influence of varying strength of electrostatic interactions, these systems appear to form dynamically arrested film-like interconnected structures in the polymer-rich phase. Acting like a pseudo-thermodynamic inverse temperature, the increase of the strength of the Coulombic interactions drive the polymeric constituents of the mixture to a gradual dynamic freezing-in. The timescale of the average density fluctuations of the formed complexes initially increases in the weak electrostatic regime reaching a finite limit as the strength of electrostatic interactions grow. Although the models are overall electrically neutral, during this process the dendrimer/linear complexes develop a polar character with an excess charge mainly close to the periphery of the dendrimers. The morphological characteristics of the resulted pattern are found to depend on the size of the polymer chains on account of the distinct conformational features assumed by the complexed linear polyelectrolytes of different length. In addition, the length of the polymer chain appears to affect the dynamics of the counterions, thus affecting the ionic transport properties of the system. It appears, therefore, that the strength of electrostatic interactions together with the length of the linear polyelectrolytes are parameters to which these systems are particularly responsive, offering thus the possibility for a better control of the resulted structure and the electric properties of these soft-colloidal systems.
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Affiliation(s)
- E Eleftheriou
- Physical Chemistry Laboratory, Chemical Engineering Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Lezov AV, Polushina GE, Lezov AA, Izumrudov VA, Kuchkina NV, Yuzik-Klimova EY, Shifrina ZB. Water-soluble polyelectrolyte complexes of pyridine-containing polyphenylene dendrimers. POLYMER SCIENCE SERIES A 2013. [DOI: 10.1134/s0965545x13020065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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13
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Su CJ, Chen CY, Lin MC, Chen HL, Iwase H, Koizumi S, Hashimoto T. Nucleosome-like Structure from Dendrimer-Induced DNA Compaction. Macromolecules 2012. [DOI: 10.1021/ma300308y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Chun-Jen Su
- National Synchrotron Radiation Research Center, Hsin-Chu 300, Taiwan
| | - Chun-Yu Chen
- National Synchrotron Radiation Research Center, Hsin-Chu 300, Taiwan
| | - Ming-Champ Lin
- Department of Chemical Engineering and Frontier
Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsin-Chu 30013, Taiwan
| | - Hsin-Lung Chen
- Department of Chemical Engineering and Frontier
Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsin-Chu 30013, Taiwan
| | - Hiroki Iwase
- Advanced Science Research Center, Japan Atomic Energy Agency, Naka-gun, Ibaraki Pref.
319-1195, Japan
| | - Satoshi Koizumi
- Advanced Science Research Center, Japan Atomic Energy Agency, Naka-gun, Ibaraki Pref.
319-1195, Japan
| | - Takeji Hashimoto
- Department of Chemical Engineering and Frontier
Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsin-Chu 30013, Taiwan
- Advanced Science Research Center, Japan Atomic Energy Agency, Naka-gun, Ibaraki Pref.
319-1195, Japan
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Conformational Effects in Non-Stoichiometric Complexes of Two Hyperbranched Molecules with a Linear Polyelectrolyte. Polymers (Basel) 2012. [DOI: 10.3390/polym4010240] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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15
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Cherstvy AG. Critical polyelectrolyte adsorption under confinement: planar slit, cylindrical pore, and spherical cavity. Biopolymers 2012; 97:311-7. [PMID: 22241107 DOI: 10.1002/bip.22023] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 12/02/2011] [Accepted: 12/21/2011] [Indexed: 01/22/2023]
Abstract
We explore the properties of adsorption of flexible polyelectrolyte chains in confined spaces between the oppositely charged surfaces in three basic geometries. A method of approximate uniformly valid solutions for the Green function equation for the eigenfunctions of polymer density distributions is developed to rationalize the critical adsorption conditions. The same approach was implemented in our recent study for the "inverse" problem of polyelectrolyte adsorption onto a planar surface, and on the outer surface of rod-like and spherical obstacles. For the three adsorption geometries investigated, the theory yields simple scaling relations for the minimal surface charge density that triggers the chain adsorption, as a function of the Debye screening length and surface curvature. The encapsulation of polyelectrolytes is governed by interplay of the electrostatic attraction energy toward the adsorbing surface and entropic repulsion of the chain squeezed into a thin slit or small cavities. Under the conditions of surface-mediated confinement, substantially larger polymer linear charge densities are required to adsorb a polyelectrolyte inside a charged spherical cavity, relative to a cylindrical pore and to a planar slit (at the same interfacial surface charge density). Possible biological implications are discussed briefly in the end.
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Affiliation(s)
- A G Cherstvy
- Institute of Complex Systems, ICS-2, Forschungszentrum Jülich, 52425 Jülich, Germany.
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16
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Carnal F, Stoll S. Adsorption of Weak Polyelectrolytes on Charged Nanoparticles. Impact of Salt Valency, pH, and Nanoparticle Charge Density. Monte Carlo Simulations. J Phys Chem B 2011; 115:12007-18. [DOI: 10.1021/jp205616e] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Fabrice Carnal
- F.-A. Forel Institute Group of Environmental Physical Chemistry, University of Geneva, 10 Route de Suisse, 1290 Versoix, Switzerland
| | - Serge Stoll
- F.-A. Forel Institute Group of Environmental Physical Chemistry, University of Geneva, 10 Route de Suisse, 1290 Versoix, Switzerland
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17
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Markelov DA, Matveev VV, Ingman P, Lähderanta E, Boiko NI. Average relaxation time of internal spectrum for carbosilane dendrimers: nuclear magnetic resonance studies. J Chem Phys 2011; 135:124901. [PMID: 21974558 DOI: 10.1063/1.3638177] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A new theoretical description of the interior mobility of carbosilane dendrimers has been tested. Experiments were conducted using measurements of the (1)H NMR spin-lattice relaxation time, T(1H), of two-, three- and four-generation carbosilane dendrimers with three different types of terminal groups in dilute chloroform solutions. Temperature dependences of the NMR relaxation rate, 1/T(1H), were obtained for the internal CH(2)-groups of the dendrimers in the range of 1/T(1H) maximum, allowing us to directly evaluate the average time of the internal spectrum for each dendrimer. It was found that the temperature of 1/T(1H) maximum is practically independent of the number of generations, G; therefore, the theoretical prediction was confirmed experimentally. In addition, the average time of the internal spectrum of carbosilane dendrimers was found to be near 0.2 ns at room temperature, and this value correlates well with the values previously obtained for other dendrimer structures using other experimental techniques.
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Affiliation(s)
- Denis A Markelov
- Laboratory of Physics, Lappeenranta University of Technology, Box 20, 53851 Lappeenranta, Finland.
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18
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Cherstvy AG, Winkler RG. Polyelectrolyte adsorption onto oppositely charged interfaces: unified approach for plane, cylinder, and sphere. Phys Chem Chem Phys 2011; 13:11686-93. [DOI: 10.1039/c1cp20749k] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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19
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Cherstvy AG. Electrostatic interactions in biological DNA-related systems. Phys Chem Chem Phys 2011; 13:9942-68. [DOI: 10.1039/c0cp02796k] [Citation(s) in RCA: 120] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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20
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Vasumathi V, Maiti PK. Complexation of siRNA with Dendrimer: A Molecular Modeling Approach. Macromolecules 2010. [DOI: 10.1021/ma1012495] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- V. Vasumathi
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore-560012, India
| | - Prabal K. Maiti
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore-560012, India
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