1
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Yasir Khan H, Tabassum S, Arjmand F. Preparation and characterization of ionic metal-based anticancer formulations of the type [bis-DACH tolfenamate metal {Co(II), Cu(II) and Zn(II)}] complexes: Binding studies with ct-DNA/tRNA, cleavage and cytotoxic activity against chemoresistant cancer cells. Inorganica Chim Acta 2023; 558:121725. [DOI: 10.1016/j.ica.2023.121725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
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2
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Nguyen NTT, Ngo AT, Hoang TX. Energetic preference and topological constraint effects on the formation of DNA twisted toroidal bundles. J Chem Phys 2023; 158:114904. [PMID: 36948817 DOI: 10.1063/5.0134710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
DNA toroids are compact torus-shaped bundles formed by one or multiple DNA molecules being condensed from the solution due to various condensing agents. It has been shown that the DNA toroidal bundles are twisted. However, the global conformations of DNA inside these bundles are still not well understood. In this study, we investigate this issue by solving different models for the toroidal bundles and performing replica-exchange molecular dynamics (REMD) simulations for self-attractive stiff polymers of various chain lengths. We find that a moderate degree of twisting is energetically favorable for toroidal bundles, yielding optimal configurations of lower energies than for other bundles corresponding to spool-like and constant radius of curvature arrangements. The REMD simulations show that the ground states of the stiff polymers are twisted toroidal bundles with the average twist degrees close to those predicted by the theoretical model. Constant-temperature simulations show that twisted toroidal bundles can be formed through successive processes of nucleation, growth, quick tightening, and slow tightening of the toroid, with the two last processes facilitating the polymer threading through the toroid's hole. A relatively long chain of 512 beads has an increased dynamical difficulty to access the twisted bundle states due to the polymer's topological constraint. Interestingly, we also observed significantly twisted toroidal bundles with a sharp U-shaped region in the polymer conformation. It is suggested that this U-shaped region makes the formation of twisted bundles easier by effectively reducing the polymer length. This effect can be equivalent to having multiple chains in the toroid.
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Affiliation(s)
- Nhung T T Nguyen
- Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi 11108, Vietnam
| | - Anh T Ngo
- Chemical Engineering Department, University of Illinois at Chicago, Chicago, Illinois 60608, USA
| | - Trinh X Hoang
- Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi 11108, Vietnam
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3
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Akhter S, Usman M, Arjmand F, Tabassum S. Synthesis, structural characterization, in vitro comparative DNA/RNA binding, and computational studies of half-sandwich Ru (II)(ƞ6-p-cymene) aminoquinoline complex. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115618] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Coelho F, Botelho C, Paris JL, Marques EF, Silva BF. Influence of the media ionic strength on the formation and in vitro biological performance of polycation-DNA complexes. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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5
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He S, Cao B, Yi Y, Huang S, Chen X, Luo S, Mou X, Guo T, Wang Y, Wang Y, Yang G. DNA precipitation revisited: A quantitative analysis. NANO SELECT 2021. [DOI: 10.1002/nano.202100152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Shupeng He
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Bozhi Cao
- Wenzhou Medical University Wenzhou University Wenzhou China
| | - Yi Yi
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Shenhao Huang
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Xiao Chen
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Sheng Luo
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Xiaoyu Mou
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Tong Guo
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Yujie Wang
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Yanwei Wang
- School of Physics and Mathematics Wenzhou University Wenzhou China
| | - Guangcan Yang
- School of Physics and Mathematics Wenzhou University Wenzhou China
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Chirkov NS, Akentiev AV, Campbell RA, Lin SY, Timoshen KA, Vlasov PS, Noskov BA. Network Formation of DNA/Polyelectrolyte Fibrous Aggregates Adsorbed at the Water-Air Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13967-13976. [PMID: 31592674 DOI: 10.1021/acs.langmuir.9b02487] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
It is discovered that complexes of DNA and hydrophobically modified polyelectrolytes form a rigid network of threadlike or fibrous aggregates at the liquid-gas interface whose morphology can dramatically affect the mechanical properties. While mixed solutions of DNA and poly(N,N-diallyl-N,N-dimethylammonium chloride) (PDADMAC) exhibit no notable surface activity, the complexes formed from DNA with poly(N,N-diallyl-N-butyl-N-methylammonium chloride) are surface-active, in contrast to either of the separate components. Further, complexes of DNA and poly(N,N-diallyl-N-hexyl-N-methylammonium chloride) (PDAHMAC) with its longer hydrophobic side chains exhibit pronounced surface activity with values of surface pressures up to 16 mN/m and dynamic surface elasticity up to 58 mN/m. If the PDAHMAC nitrogen to DNA phosphate molar ratio, N/P, is between 0.6 and 3, abrupt compression of the adsorption layer leads unexpectedly to a noticeable decrease of the surface elasticity. The application of imaging techniques reveals that this effect is a consequence of the destruction of a rigid network of threadlike DNA/polyelectrolyte aggregates at the interface. The toroidal aggregates, which are typical for the bulk phase of DNA/PDADMAC solutions in this range of N/P ratios, are not observed in the surface layer. The observed link between the mechanical properties and interfacial morphology of surface-active complexes formed from DNA with hydrophobically modified polyelectrolytes indicates that tuning polyelectrolyte hydrophobicity in these systems may be a means to develop their use in applications ranging from nonviral gene-delivery vehicles to conductive nanowires.
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Affiliation(s)
- N S Chirkov
- Institute of Chemistry , St. Petersburg State University , Universitetsky pr. 26 , 198504 St. Petersburg , Russia
| | - A V Akentiev
- Institute of Chemistry , St. Petersburg State University , Universitetsky pr. 26 , 198504 St. Petersburg , Russia
| | - R A Campbell
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health , University of Manchester , Manchester M13 9PT , U.K
| | - S-Y Lin
- Chemical Engineering Department , National Taiwan University of Science and Technology , 43 Keelung Road, Section 4 , 106 Taipei , Taiwan
| | - K A Timoshen
- Institute of Chemistry , St. Petersburg State University , Universitetsky pr. 26 , 198504 St. Petersburg , Russia
| | - P S Vlasov
- Institute of Chemistry , St. Petersburg State University , Universitetsky pr. 26 , 198504 St. Petersburg , Russia
| | - B A Noskov
- Institute of Chemistry , St. Petersburg State University , Universitetsky pr. 26 , 198504 St. Petersburg , Russia
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7
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Liu H, Wang L, Wang X, Hu Y, Feng L, Dong S, Hao J. Vesicle transition of catanionic redox-switchable surfactants controlled by DNA with different chain lengths. J Colloid Interface Sci 2019; 549:89-97. [DOI: 10.1016/j.jcis.2019.04.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 04/14/2019] [Accepted: 04/15/2019] [Indexed: 11/17/2022]
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8
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Jorge AF, Nunes SC, Cova TF, Pais AA. Cooperative action in DNA condensation. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.09.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Hoang TX, Trinh HL, Giacometti A, Podgornik R, Banavar JR, Maritan A. Phase diagram of the ground states of DNA condensates. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 92:060701. [PMID: 26764619 DOI: 10.1103/physreve.92.060701] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Indexed: 06/05/2023]
Abstract
The phase diagram of the ground states of DNA in a bad solvent is studied for a semiflexible polymer model with a generalized local elastic bending potential characterized by a nonlinearity parameter x and effective self-attraction promoting compaction. x=1 corresponds to the wormlike chain model. Surprisingly, the phase diagram as well as the transition lines between the ground states are found to be a function of x. The model provides a simple explanation for the results of prior experimental and computational studies and makes predictions for the specific geometries of the ground states. The results underscore the impact of the form of the microscopic bending energy at macroscopic observable scales.
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Affiliation(s)
- Trinh X Hoang
- Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam
| | - Hoa Lan Trinh
- Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam
| | - Achille Giacometti
- Dipartimento di Scienze Molecolari e Nanosistemi, Universita' Ca' Foscari Venezia, I-30123 Venezia, Italy
| | - Rudolf Podgornik
- Department of Theoretical Physics, J. Stefan Institute and Department of Physics, Faculty of Mathematics and Physics, University of Ljubljana, SI-1000 Ljubljana, Slovenia
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Jayanth R Banavar
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - Amos Maritan
- Dipartimento di Fisica e Astronomia, Università di Padova, CNISM and INFN, via Marzolo 8, I-35131 Padova, Italy
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10
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Satpathi S, Sengupta A, Hridya VM, Gavvala K, Koninti RK, Roy B, Hazra P. A Green Solvent Induced DNA Package. Sci Rep 2015. [PMCID: PMC5378943 DOI: 10.1038/srep09137] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Mechanistic details of DNA compaction is essential blue print for gene regulation in living organisms. Many in vitro studies have been implemented using several compaction agents. However, these compacting agents may have some kinds of cytotoxic effects to the cells. To minimize this aspect, several research works had been performed, but people have never focused green solvent, i.e. room temperature ionic liquid as DNA compaction agent. To the best of our knowledge, this is the first ever report where we have shown that guanidinium tris(pentafluoroethyl)trifluorophosphate (Gua-IL) acts as a DNA compacting agent. The compaction ability of Gua-IL has been verified by different spectroscopic techniques, like steady state emission, circular dichroism, dynamic light scattering and UV melting. Notably, we have extensively probed this compaction by Gua-IL through field emission scanning electron microscopy (FE-SEM) and fluorescence microscopy images. We also have discussed the plausible compaction mechanism process of DNA by Gua-IL. Our results suggest that Gua-IL forms a micellar kind of self aggregation above a certain concentration (≥1 mM), which instigates this compaction process. This study divulges the specific details of DNA compaction mechanism by a new class of compaction agent, which is highly biodegradable and eco friendly in nature.
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11
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Dey D, Maiti C, Maiti S, Dhara D. Interaction between calf thymus DNA and cationic bottle-brush copolymers: equilibrium and stopped-flow kinetic studies. Phys Chem Chem Phys 2015; 17:2366-77. [DOI: 10.1039/c4cp03309d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyplex formation betweenctDNA and PEGylated cationic bottle-brush copolymers: PEG influences the DNA compaction behavior and the kinetics of polyplex formation.
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Affiliation(s)
- Debabrata Dey
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- India
| | - Chiranjit Maiti
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- India
| | - Souvik Maiti
- Proteomics and Structural Biology Unit
- Institute of Genomics and Integrative Biology
- CSIR
- Delhi 110007
- India
| | - Dibakar Dhara
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- India
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12
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Morán MC, Vinardell MP, Infante MR, Miguel MG, Lindman B. DNA gel particles: an overview. Adv Colloid Interface Sci 2014; 205:240-56. [PMID: 24119768 DOI: 10.1016/j.cis.2013.09.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 09/10/2013] [Accepted: 09/19/2013] [Indexed: 01/01/2023]
Abstract
A general understanding of interactions between DNA and oppositely charged compounds forms the basis for developing novel DNA-based materials, including gel particles. The association strength, which is altered by varying the chemical structure of the cationic cosolute, determines the spatial homogeneity of the gelation process, creating DNA reservoir devices and DNA matrix devices that can be designed to release either single- (ssDNA) or double-stranded (dsDNA) DNA. This review covers recent developments on the topic of DNA gel particles formed in water-water emulsion-type interfaces. The degree of DNA entrapment, particle morphology, swelling/dissolution behavior and DNA release responses are discussed as functions of the nature of the cationic agent used. On the basis of designing DNA gel particles for therapeutic purposes, recent studies on the determination of the surface hydrophobicity and the hemolytic and the cytotoxic assessments of the obtained DNA gel particles have been also reported.
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Affiliation(s)
- M Carmen Morán
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII, 08028 Barcelona, Spain; Interaction of Surfactants with Cell Membranes, Unit Associated with CSIC, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXII, 08028 Barcelona, Spain.
| | - M Pilar Vinardell
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII, 08028 Barcelona, Spain; Interaction of Surfactants with Cell Membranes, Unit Associated with CSIC, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXII, 08028 Barcelona, Spain
| | - M Rosa Infante
- Interaction of Surfactants with Cell Membranes, Unit Associated with CSIC, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXII, 08028 Barcelona, Spain; Departamento de Tecnología de Tensioactivos, IQAC-CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain
| | - M Graça Miguel
- Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Björn Lindman
- Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal; Physical Chemistry 1, University of Lund, P.O. Box 124, 22100 Lund, Sweden
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13
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Jorge AF, Pereira RFP, Nunes SCC, Valente AJM, Dias RS, Pais AACC. Interpreting the Rich Behavior of Ternary DNA-PEI-Fe(III) Complexes. Biomacromolecules 2014; 15:478-91. [DOI: 10.1021/bm4013716] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andreia F. Jorge
- Department
of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Rui F. P. Pereira
- Department
of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Sandra C. C. Nunes
- Department
of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Artur J. M. Valente
- Department
of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Rita S. Dias
- Department
of Physics, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | - Alberto A. C. C. Pais
- Department
of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
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14
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Sun S, Liu M, Dong F, Fan S, Yao Y. A histone-like protein induces plasmid DNA to form liquid crystals in vitro and gene compaction in vivo. Int J Mol Sci 2013; 14:23842-57. [PMID: 24322443 PMCID: PMC3876081 DOI: 10.3390/ijms141223842] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 11/17/2013] [Accepted: 11/21/2013] [Indexed: 12/15/2022] Open
Abstract
The liquid crystalline state is a universal phenomenon involving the formation of an ordered structure via a self-assembly process that has attracted attention from numerous scientists. In this study, the dinoflagellate histone-like protein HCcp3 is shown to induce super-coiled pUC18 plasmid DNA to enter a liquid crystalline state in vitro, and the role of HCcp3 in gene condensation in vivo is also presented. The plasmid DNA (pDNA)-HCcp3 complex formed birefringent spherical particles with a semi-crystalline selected area electronic diffraction (SAED) pattern. Circular dichroism (CD) titrations of pDNA and HCcp3 were performed. Without HCcp3, pUC18 showed the characteristic B conformation. As the HCcp3 concentration increased, the 273 nm band sharply shifted to 282 nm. When the HCcp3 concentration became high, the base pair (bp)/dimer ratio fell below 42/1, and the CD spectra of the pDNA-HCcp3 complexes became similar to that of dehydrated A-form DNA. Microscopy results showed that HCcp3 compacted the super-coiled gene into a condensed state and that inclusion bodies were formed. Our results indicated that HCcp3 has significant roles in gene condensation both in vitro and in histone-less eukaryotes in vivo. The present study indicates that HCcp3 has great potential for applications in non-viral gene delivery systems, where HCcp3 may compact genetic material to form liquid crystals.
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Affiliation(s)
- Shiyong Sun
- Key Laboratory of Solid Waste Treatment and Resource Recycle & Fundamental Science on Nuclear Waste and Environmental Security Laboratory, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; E-Mail:
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; E-Mails: (S.F.); (Y.Y.)
- Authors to whom correspondence should be addressed; E-Mails: (S.S.); (F.D.); Tel./Fax: +86-816-2419569 (S.S.)
| | - Mingxue Liu
- Key Laboratory of Solid Waste Treatment and Resource Recycle & Fundamental Science on Nuclear Waste and Environmental Security Laboratory, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; E-Mail:
| | - Faqin Dong
- Key Laboratory of Solid Waste Treatment and Resource Recycle & Fundamental Science on Nuclear Waste and Environmental Security Laboratory, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (S.S.); (F.D.); Tel./Fax: +86-816-2419569 (S.S.)
| | - Shenglan Fan
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; E-Mails: (S.F.); (Y.Y.)
| | - Yanchen Yao
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; E-Mails: (S.F.); (Y.Y.)
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15
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Mezei A, Pons R, Morán MC. The nanostructure of surfactant-DNA complexes with different arrangements. Colloids Surf B Biointerfaces 2013; 111:663-71. [PMID: 23907055 DOI: 10.1016/j.colsurfb.2013.06.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/14/2013] [Accepted: 06/18/2013] [Indexed: 11/27/2022]
Abstract
The nanostructure of DNA with different cationic surfactant has been studied in order to elucidate the detailed arrangement concerning the position of DNA and surfactant domains in the complexes. Also, the orientation of the DNA cylinders in the thin films of the complexes was investigated. Attention was directed on the preparation methods of the complexes and to how the different surfactant structure affects the compaction of the DNA. The cationic surfactant-DNA complexes were investigated by X-ray scattering, polarized light microscopy and elemental microanalysis. It was observed that the molecular organization of the complexes between DNA and cationic surfactant corresponds to a hexagonal structure with different packing arrangements. The nanostructure of the complexes depends on the hydrophobic/hydrophilic balance of the cationic surfactant. In particular the use of arginine derived surfactants, with a large polar head group able to interact not only by electrostatics but also by hydrogen bonding, allows for the formation of more compact structures. The results suggest that the smaller the lattice parameter the more compact and stable is the complex implying slower DNA release.
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Affiliation(s)
- Amalia Mezei
- Departament de Tecnología Química y de Tensioactius, Institut de Química Avançada de Catalunya, IQAC-CSIC, c. Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Ramon Pons
- Departament de Tecnología Química y de Tensioactius, Institut de Química Avançada de Catalunya, IQAC-CSIC, c. Jordi Girona 18-26, 08034 Barcelona, Spain.
| | - M Carmen Morán
- Departament de Fisiología, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII, 08028 Barcelona, Spain
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16
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Zhou J, Ke F, Xia Y, Sun J, Xu N, Li ZC, Liang D. Complexation of DNA with poly-(L-lysine) and its copolymers in dimethylformamide. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.03.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Kanda K, Kodama Y, Kurosaki T, Imamura M, Nakagawa H, Muro T, Higuchi N, Nakamura T, Kitahara T, Honda M, Sasaki H. Ternary Complex of Plasmid DNA with Protamine and γ-Polyglutamic Acid for Biocompatible Gene Delivery System. Biol Pharm Bull 2013; 36:1794-9. [DOI: 10.1248/bpb.b13-00479] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kosuke Kanda
- Department of Hospital Pharmacy, Nagasaki University Hospital
| | - Yukinobu Kodama
- Department of Hospital Pharmacy, Nagasaki University Hospital
| | - Tomoaki Kurosaki
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University
| | | | - Hiroo Nakagawa
- Department of Hospital Pharmacy, Nagasaki University Hospital
| | - Takahiro Muro
- Department of Hospital Pharmacy, Nagasaki University Hospital
| | | | | | | | - Masayuki Honda
- Division of Medical Informatics, Nagasaki University Hospital
| | - Hitoshi Sasaki
- Department of Hospital Pharmacy, Nagasaki University Hospital
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18
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Pereira P, Jorge AF, Martins R, Pais AA, Sousa F, Figueiras A. Characterization of polyplexes involving small RNA. J Colloid Interface Sci 2012; 387:84-94. [DOI: 10.1016/j.jcis.2012.07.088] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 07/30/2012] [Accepted: 07/31/2012] [Indexed: 10/28/2022]
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19
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dos Santos S, Piculell L, Medronho B, Miguel MG, Lindman B. Phase behavior and rheological properties of DNA–cationic polysaccharide mixtures. J Colloid Interface Sci 2012; 383:63-74. [DOI: 10.1016/j.jcis.2012.06.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 06/05/2012] [Accepted: 06/06/2012] [Indexed: 10/28/2022]
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20
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Dias RS, Linse P, Pais AACC. Stepwise disproportionation in polyelectrolyte complexes. J Comput Chem 2011; 32:2697-707. [DOI: 10.1002/jcc.21851] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 05/11/2011] [Accepted: 05/12/2011] [Indexed: 01/09/2023]
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21
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Makita N, Yoshikawa Y, Takenaka Y, Sakaue T, Suzuki M, Watanabe C, Kanai T, Kanbe T, Imanaka T, Yoshikawa K. Salt has a biphasic effect on the higher-order structure of a DNA-protamine complex. J Phys Chem B 2011; 115:4453-9. [PMID: 21446742 DOI: 10.1021/jp111331q] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We observed single DNA molecules by fluorescence microscopy to clarify the effect of protamine on their higher-order structure. With an increase in the protamine concentration, the conformation of DNA molecules changes from an elongated coil state to a compact state through an intermediate state. Furthermore, the long-axis length of DNA gradually decreases while maintaining a distribution profile with a single peak. Such behavior is markedly different from the conformational transition of DNA induced by small polyamines such as spermidine and spermine, where individual DNA molecules exhibit an all-or-none transition from a coil to a globule state and the size distribution is characterized by twin peaks around the transition region. Next, we examined the effect of salt on the conformation of the DNA-protamine complex. Interestingly, at a fixed concentration of protamine, DNA tends to shrink with an increase in the NaCl concentration up to 300 mM, and then swells with a further increase in the NaCl concentration, that is, biphasic behavior is generated depending on the salt concentration. For comparison, we examined the effect of salt on DNA compaction induced by the trivalent polyamine spermidine. We confirmed that salt always has an inhibitory effect on spermine-induced compaction. To clarify this biphasic effect of salt on protamine-induced DNA compaction, we performed a numerical simulation on a negatively charged semiflexible polyelectrolyte in the presence of polycations with relatively large numbers of positive charges by taking into account the effect of salt at different concentrations. The results showed that salt promotes compaction up to a certain concentration and then tends to unfold the polyelectrolyte chain, which reproduced the experimental observation in a semiquantitative manner. This biphasic effect is discussed in relation to the specific shielding effect that depends on the salt concentration.
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Affiliation(s)
- Naoko Makita
- Faculty of Environmental and Information Sciences, Yokkaichi University, Yokkaichi, Japan
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Cho SK, Kwon YJ. Polyamine/DNA polyplexes with acid-degradable polymeric shell as structurally and functionally virus-mimicking nonviral vectors. J Control Release 2011; 150:287-97. [DOI: 10.1016/j.jconrel.2010.12.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 11/24/2010] [Accepted: 12/09/2010] [Indexed: 11/24/2022]
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23
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Dias RS, Pais AACC. Polyelectrolyte condensation in bulk, at surfaces, and under confinement. Adv Colloid Interface Sci 2010; 158:48-62. [PMID: 20347064 DOI: 10.1016/j.cis.2010.02.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2009] [Revised: 02/05/2010] [Accepted: 02/14/2010] [Indexed: 11/18/2022]
Abstract
In this review we discuss recent results from computer simulations based on coarse-grained polyion models representing aqueous solutions of polyelectrolytes. The focus will be directed to the conformation of the polyions and, in particular, their condensation in bulk, induced by multivalent ions and oppositely charged polyelectrolytes, at responsive surfaces and under confinement.
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Affiliation(s)
- R S Dias
- Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal.
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Jorge AF, Sarraguça JMG, Dias RS, Pais AACC. Polyelectrolyte compaction by pH-responsive agents. Phys Chem Chem Phys 2009; 11:10890-8. [DOI: 10.1039/b914159f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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