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Giona RM, Vitorazi L, Loh W. Assessing the Contribution of the Neutral Blocks in DNA/Block-Copolymer Polyplexes: Poly(acrylamide) vs. Poly(ethylene Oxide). Molecules 2023; 28:molecules28010398. [PMID: 36615592 PMCID: PMC9824764 DOI: 10.3390/molecules28010398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 01/04/2023] Open
Abstract
The interaction of DNA with different block copolymers, namely poly (trimethylammonium chloride methacryloyoxy)ethyl)-block-poly(acrylamide), i.e., (PTEA)-b-(PAm), and poly (trimethylammonium chloride methacryloyoxy)ethyl)-block-poly(ethylene oxide), i.e., (PTEA)-b-(PEO), was studied. The nature of the cationic block was maintained fixed (PTEA), whereas the neutral blocks contained varying amounts of acrylamide or (ethylene oxide) units. According to results from isothermal titration microcalorimetry measurements, the copolymers interaction with DNA is endothermic with an enthalpy around 4.0 kJ mol−1 of charges for (PTEA)-b-(PAm) and 5.5 kJ mol−1 of charges for (PTEA)-b-(PEO). The hydrodynamic diameters of (PTEA)-b-(PEO)/DNA and (PTEA)-b-(PAm)/DNA polyplexes prepared by titration were around 200 nm at charge ratio (Z+/−) < 1. At Z+/− close and above 1, the (PTEA)50-b-(PAm)50/DNA and (PTEA)50-b-(PAm)200/DNA polyplexes precipitated. Interestingly, (PTEA)50-b-(PAm)1000/DNA polyplexes remained with a size of around 300 nm even after charge neutralization, probably due to the size of the neutral block. Conversely, for (PTEA)96-b-(PEO)100/DNA polyplexes, the size distribution was broad, indicating a more heterogeneous system. Polyplexes were also prepared by direct mixture at Z+/− of 2.0, and they displayed diameters around 120−150 nm, remaining stable for more than 10 days. Direct and reverse titration experiments showed that the order of addition affects both the size and charge of the resulting polyplexes.
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Affiliation(s)
- Renata Mello Giona
- LaMaFI—Laboratório de Materiais e Fenômenos de Interface, Chemistry Department, Universidade Tecnológica Federal do Paraná (UTFPR), Medianeira, Curitiba 85884-000, Paraná (PR), Brazil
- Institute of Chemistry, Universidade Estadual de Campinas (UNICAMP), Caixa Postal 6154, Campinas 13083-970, São Paulo State (SP), Brazil
| | - Letícia Vitorazi
- Institute of Chemistry, Universidade Estadual de Campinas (UNICAMP), Caixa Postal 6154, Campinas 13083-970, São Paulo State (SP), Brazil
- Laboratório de Materiais Poliméricos, EEIMVR, Universidade Federal Fluminense, Volta Redonda 27255-125, Rio de Janeiro (RJ), Brazil
| | - Watson Loh
- Institute of Chemistry, Universidade Estadual de Campinas (UNICAMP), Caixa Postal 6154, Campinas 13083-970, São Paulo State (SP), Brazil
- Correspondence:
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2
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Zakaria H, El Kurdi R, Patra D. Interaction of Curcumin with Poly Lactic-Co-Glycolic Acid and Poly Diallyldimethylammonium Chloride By Fluorescence Spectroscopy. J Fluoresc 2022; 32:2287-2295. [DOI: 10.1007/s10895-022-02958-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/20/2022] [Indexed: 11/29/2022]
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3
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DNA penetration into a monolayer of amphiphilic polyelectrolyte. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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Sabin J, Alatorre-Meda M, Miñones J, Domínguez-Arca V, Prieto G. New insights on the mechanism of polyethylenimine transfection and their implications on gene therapy and DNA vaccines. Colloids Surf B Biointerfaces 2021; 210:112219. [PMID: 34836707 DOI: 10.1016/j.colsurfb.2021.112219] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/30/2021] [Accepted: 11/12/2021] [Indexed: 12/28/2022]
Abstract
Polyethylenimine (PEI) has been demonstrated as an efficient DNA delivery vehicle both in vitro and in vivo. There is a consensus that PEI-DNA complexes enter the cells by endocytosis and escape from endosomes by the so-called "proton sponge" effect. However, little is known on how and where the polyplexes are de-complexed for DNA transcription and replication to occur inside the cell nucleus. To better understand this issue, we (i) tracked the cell internalization of PEI upon transfection to human epithelial cells and (ii) studied the interaction of PEI with phospholipidic layers mimicking nuclear membranes. Both the biological and physicochemical experiments provided evidence of a strong binding affinity between PEI and the lipidic bilayer. Firstly, confocal microscopy revealed that PEI alone could not penetrate the cell nucleus; instead, it arranged throughout the cytoplasm and formed a sort of aureole surrounding the nuclei periphery. Secondly, surface tension measurements, fluorescence dye leakage assays, and differential scanning calorimetry demonstrated that a combination of hydrophobic and electrostatic interactions between PEI and the phospholipidic monolayers/bilayers led to the formation of stable defects along the model membranes, allowing the intercalation of PEI through the monolayer/bilayer structure. Results are also supported by molecular dynamics simulation of the pore formation in PEI-lipidic bilayers. As discussed throughout the text, these results might shed light on a the mechanism in which the interaction between PEI and the nucleus membrane might play an active role on the DNA release: on the one hand, the PEI-membrane interaction is anticipated to facilitate the DNA disassembly from the polyplex by establishing a competition with DNA for the PEI binding and on the other hand, the forming defects are expected to serve as channels for the entrance of de-complexed DNA into the cell nucleus. A better understanding of the mechanism of transfection of cationic polymers opens paths to development of more efficiency vectors to improve gene therapy treatment and the new generation of DNA vaccines.
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Affiliation(s)
- Juan Sabin
- Biophysics and Interfaces Group, Applied Physics Department, Universidade de Santiago de Compostela, Spain; AFFINImeter-Software 4 Science Developments S.L. Edificio Emprendia s/n Campus Vida, Santiago de Compostela, Spain.
| | - Manuel Alatorre-Meda
- Cátedras CONACyT-Tecnológico Nacional de México/I. T. Tijuana, Centro de Graduados e Investigación en Química-Grupo de Biomateriales y Nanomedicina, Blvd. Alberto Limón Padilla S/N, 22510 Tijuana, BC, Mexico
| | - Jose Miñones
- Department of Physical Chemistry, Faculty of Pharmacy Universidade de Santiago de Compostela, Spain
| | - Vicente Domínguez-Arca
- Biophysics and Interfaces Group, Applied Physics Department, Universidade de Santiago de Compostela, Spain.
| | - Gerardo Prieto
- Biophysics and Interfaces Group, Applied Physics Department, Universidade de Santiago de Compostela, Spain
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5
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He J, Duan M, Wang X, Wang M, Jing B, Liu S, Fang S. Copolymerization behavior of diallyldimethylammonium chloride‐nonionic macromonomer in water‐ether mixture solution and flotation performance of the copolymer for treating oily wastewater. J Appl Polym Sci 2021. [DOI: 10.1002/app.50706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jie He
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Ming Duan
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Xiujun Wang
- Beijing Research Center China National Offshore Oil Corporation Beijing China
- State Key Laboratory Offshore Oilfield Exploitation Beijing China
| | - Manlin Wang
- Institute of Water Environment Research Chengdu Academy of environmental protection science Chengdu China
| | - Bo Jing
- State Key Laboratory Offshore Oilfield Exploitation Beijing China
| | - Shuai Liu
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Shenwen Fang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
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6
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Optimizing the Efficiency of a Cytocompatible Carbon-Dots-Based FRET Platform and Its Application as a Riboflavin Sensor in Beverages. NANOMATERIALS 2021; 11:nano11081981. [PMID: 34443812 PMCID: PMC8399497 DOI: 10.3390/nano11081981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 12/19/2022]
Abstract
In this work, the Förster resonance energy transfer (FRET) between carbon dots (CDs) as energy donors and riboflavin (RF) as an energy acceptor was optimized and the main parameters that characterize the FRET process were determined. The results were successfully applied in the development of an ultrasensitive ratiometric fluorescent sensor for the selective and sensitive determination of RF in different beverages. Water-soluble CDs with a high quantum yield (54%) were synthesized by a facile and direct microwave-assisted technique. The CDs were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), Zeta potential, and UV-visible and molecular fluorescence spectroscopy. The study of the FRET process at two donor concentrations showed that the energy transfer efficiency decreases as the donor concentration increases, confirming its dependence on the acceptor:donor ratio in nanoparticle-based systems. The results show the importance of optimizing the FRET process conditions to improve the corresponding output signal. The variation in the ratiometric signal with the concentration of RF showed linearity in a concentration range of 0 to 11 µM with R2 = 0.9973 and a detection limit of 0.025 µM. The developed nanosensor showed good selectivity over other possible types of interference. The sensor was then applied for the determination of RF in beverage samples using the standard addition method with recoveries between 96% and 106%. Preliminary cytocompatibility tests carried out with breast cancer cells (MDA-MB-231) revealed the nanosensor to be cytocompatible in its working concentration regime, even after long incubation times with cells. Altogether, the developed RF determination method was found to be fast, low-cost, highly sensitive, and selective and can be extended to other samples of interest in the biological and food sectors. Moreover, thanks to its long-lasting cytocompatibility, the developed platform can also be envisaged for other applications of biological interest, such as intracellular sensing and staining for live cell microscopy.
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Khan MA, Kiser MR, Moradipour M, Nadeau EA, Ghanim RW, Webb BA, Rankin SE, Knutson BL. Effect of Confinement in Nanopores on RNA Interactions with Functionalized Mesoporous Silica Nanoparticles. J Phys Chem B 2020; 124:8549-8561. [PMID: 32881500 DOI: 10.1021/acs.jpcb.0c06536] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Amine-functionalized mesoporous silica nanoparticles (MSNPAs) are ideal carriers for oligonucleotides for gene delivery and RNA interference. This investigation examines the thermodynamic driving force of interactions of double-stranded (ds) RNA with MSNPAs as a function of RNA length (84 and 282 base pair) and particle pore diameter (nonporous, 2.7, 4.3, and 8.1 nm) using isothermal titration calorimetry, extending knowledge of solution-based nucleic acid-polycation interactions to RNA confined in nanopores. Adsorption of RNA follows a two-step process: endothermic interactions driven by entropic contribution from counterion (and water) release and an exothermic regime dominated by short-range interactions within the pores. Evidence of hindered pore loading of the longer RNA and pore size-dependent confinement of RNA in the MSPAs is provided from the relative contributions of the endothermic and exothermic regimes. Reduction of endothermic and exothermic enthalpies in both regimes in the presence of salt for both lengths of RNA indicates the significant contribution of short-range electrostatic interactions, whereas ΔH and ΔG values are consistent with conformation changes and desolvation of nucleic acids upon binding with polycations. Knowledge of the interactions between RNA and functionalized porous nanoparticles will aid in porous nanocarrier design suitable for functional RNA delivery.
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Affiliation(s)
- M Arif Khan
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Maelyn R Kiser
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Mahsa Moradipour
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Emily A Nadeau
- Department of Entomology, University of Kentucky, Lexington, Kentucky 40546, United States
| | - Ramy W Ghanim
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Bruce A Webb
- Department of Entomology, University of Kentucky, Lexington, Kentucky 40546, United States
| | - Stephen E Rankin
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Barbara L Knutson
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
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8
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Carmona-Ribeiro AM, Pérez-Betancourt Y. Cationic Nanostructures for Vaccines Design. Biomimetics (Basel) 2020; 5:biomimetics5030032. [PMID: 32645946 PMCID: PMC7560170 DOI: 10.3390/biomimetics5030032] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 12/20/2022] Open
Abstract
Subunit vaccines rely on adjuvants carrying one or a few molecular antigens from the pathogen in order to guarantee an improved immune response. However, to be effective, the vaccine formulation usually consists of several components: an antigen carrier, the antigen, a stimulator of cellular immunity such as a Toll-like Receptors (TLRs) ligand, and a stimulator of humoral response such as an inflammasome activator. Most antigens are negatively charged and combine well with oppositely charged adjuvants. This explains the paramount importance of studying a variety of cationic supramolecular assemblies aiming at the optimal activity in vivo associated with adjuvant simplicity, positive charge, nanometric size, and colloidal stability. In this review, we discuss the use of several antigen/adjuvant cationic combinations. The discussion involves antigen assembled to 1) cationic lipids, 2) cationic polymers, 3) cationic lipid/polymer nanostructures, and 4) cationic polymer/biocompatible polymer nanostructures. Some of these cationic assemblies revealed good yet poorly explored perspectives as general adjuvants for vaccine design.
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9
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Bis-quaternary ammonium gemini surfactants for gene therapy: Effects of the spacer hydrophobicity on the DNA complexation and biological activity. Colloids Surf B Biointerfaces 2020; 189:110817. [DOI: 10.1016/j.colsurfb.2020.110817] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 12/25/2019] [Accepted: 01/20/2020] [Indexed: 01/05/2023]
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10
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Bravo-Anaya L, Garbay B, Nando-Rodríguez J, Carvajal Ramos F, Ibarboure E, Bathany K, Xia Y, Rosselgong J, Joucla G, Garanger E, Lecommandoux S. Nucleic acids complexation with cationic elastin-like polypeptides: Stoichiometry and stability of nano-assemblies. J Colloid Interface Sci 2019; 557:777-792. [DOI: 10.1016/j.jcis.2019.09.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 09/13/2019] [Accepted: 09/16/2019] [Indexed: 02/01/2023]
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11
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Schlenoff JB, Yang M, Digby ZA, Wang Q. Ion Content of Polyelectrolyte Complex Coacervates and the Donnan Equilibrium. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01755] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Joseph B. Schlenoff
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Mo Yang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Zachary A. Digby
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Qifeng Wang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
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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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13
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Schlenoff JB. Site-specific perspective on interactions in polyelectrolyte complexes: Toward quantitative understanding. J Chem Phys 2018; 149:163314. [DOI: 10.1063/1.5035567] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Joseph B. Schlenoff
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306-4390, USA
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14
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Cambón A, Villar-Alvarez E, Alatorre-Meda M, Pardo A, Hiram B, Barbosa S, Taboada P, Mosquera V. Characterization of the complexation phenomenon and biological activity in vitro of polyplexes based on Tetronic T901 and DNA. J Colloid Interface Sci 2018; 519:58-70. [PMID: 29482097 DOI: 10.1016/j.jcis.2018.02.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/15/2018] [Accepted: 02/16/2018] [Indexed: 12/31/2022]
Abstract
The complexation process and underlying mechanisms that rule the interaction of DNA with the cationic block copolymer Tetronic T901 to form polyplexes and their potential transfection efficiency have been studied under different solution conditions. We noted that T901 favors the formation of self-assembled structures with partially condensed DNA at smaller polymer concentrations than other Pluronic™/Tetronic™-type copolymers previously analysed. The observed polyplexes display sizes from the nano- to the micro- range as derived from DLS, electronic and optical microscopies. Also, copolymer micelles are observed at concentrations below the copolymer critical micellar concentration (cmc) induced by the presence of DNA. The complexation process is dependent on solution conditions, with electrostatic and ionic interactions being more important at acidic pH thanks to the predominant diprotonated form of the block copolymer which is less aggregation-prone, whilst dispersive forces are increasingly enhanced under basic conditions or when rising the solution temperature. Whatever the case, the complexation is mainly governed by entropic contributions, as denoted from ITC data. In vitro transfection experiments after complexing T901 with a pDNA encoding the expression of green fluorescein protein, GFP, show a relative successful fluorescence of transfected HeLa cells, which confirms the uptake, internalization and release of the genetic material within the cells at suitable [N]/[P] ratios with relatively low cytotoxicity. Despite the observed successful outcomes, the obtained transfection efficacies are slightly lower than those obtained with Lipofectamine2000, so further optimization of the polyplex formation conditions is envisaged in future studies.
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Affiliation(s)
- Adriana Cambón
- Colloids and Polymers Physics Group, Department of Particle Physics, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Eva Villar-Alvarez
- Colloids and Polymers Physics Group, Department of Particle Physics, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Manuel Alatorre-Meda
- CONACyT-Instituto Tecnológico de Tijuana, Centro de Graduados e Investigación en Química, Blvd. Alberto Limón Padilla S/N, 22510 Tijuana, B.C., Mexico
| | - Alberto Pardo
- Colloids and Polymers Physics Group, Department of Particle Physics, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Baltazar Hiram
- Colloids and Polymers Physics Group, Department of Particle Physics, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain; Departamento de Física, Universidad de Sonora, Rosales y Transversal, 83000 Hermosillo, Sonora, Mexico
| | - Silvia Barbosa
- Colloids and Polymers Physics Group, Department of Particle Physics, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Pablo Taboada
- Colloids and Polymers Physics Group, Department of Particle Physics, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain.
| | - Víctor Mosquera
- Colloids and Polymers Physics Group, Department of Particle Physics, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
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Al-Qadi S, Alatorre-Meda M, Martin-Pastor M, Taboada P, Remuñán-López C. The role of hyaluronic acid inclusion on the energetics of encapsulation and release of a protein molecule from chitosan-based nanoparticles. Colloids Surf B Biointerfaces 2016; 141:223-232. [DOI: 10.1016/j.colsurfb.2016.01.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 01/15/2016] [Accepted: 01/17/2016] [Indexed: 10/22/2022]
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16
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Bravo-Anaya LM, Soltero JFA, Rinaudo M. DNA/chitosan electrostatic complex. Int J Biol Macromol 2016; 88:345-53. [PMID: 27050113 DOI: 10.1016/j.ijbiomac.2016.03.035] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/17/2016] [Accepted: 03/18/2016] [Indexed: 10/22/2022]
Abstract
Up to now, chitosan and DNA have been investigated for gene delivery due to chitosan advantages. It is recognized that chitosan is a biocompatible and biodegradable non-viral vector that does not produce immunological reactions, contrary to viral vectors. Chitosan has also been used and studied for its ability to protect DNA against nuclease degradation and to transfect DNA into several kinds of cells. In this work, high molecular weight DNA is compacted with chitosan. DNA-chitosan complex stoichiometry, net charge, dimensions, conformation and thermal stability are determined and discussed. The influence of external salt and chitosan molecular weight on the stoichiometry is also discussed. The isoelectric point of the complexes was found to be directly related to the protonation degree of chitosan. It is clearly demonstrated that the net charge of DNA-chitosan complex can be expressed in terms of the ratio [NH3(+)]/[P(-)], showing that the electrostatic interactions between DNA and chitosan are the main phenomena taking place in the solution. Compaction of DNA long chain complexed with low molar mass chitosan gives nanoparticles with an average radius around 150nm. Stable nanoparticles are obtained for a partial neutralization of phosphate ionic sites (i.e.: [NH3(+)]/[P(-)] fraction between 0.35 and 0.80).
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Affiliation(s)
- Lourdes Mónica Bravo-Anaya
- Universidad de Guadalajara, Departamento de Ingeniería Química, Blvd. M. García Barragán #1451, C.P. 44430 Guadalajara, Jalisco, Mexico; Grenoble Alpes University, LRP, F-38000 Grenoble, France.
| | - J F Armando Soltero
- Universidad de Guadalajara, Departamento de Ingeniería Química, Blvd. M. García Barragán #1451, C.P. 44430 Guadalajara, Jalisco, Mexico.
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17
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Aguirre G, Villar-Alvarez E, González A, Ramos J, Taboada P, Forcada J. Biocompatible stimuli-responsive nanogels for controlled antitumor drug delivery. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28025] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Garbiñe Aguirre
- POLYMAT, Bionanoparticles Group, Department of Applied Chemistry, UFI 11/56, Faculty of Chemistry; University of the Basque Country UPV/EHU; Apdo. 1072 Donostia-San Sebastián 20080 Spain
| | - Eva Villar-Alvarez
- Condensed Matter Physics Department, Faculty of Physics, 15782 Campus Sur; Universidad de Santiago de Compostela; Santiago de Compostela Spain
| | - Adrián González
- Condensed Matter Physics Department, Faculty of Physics, 15782 Campus Sur; Universidad de Santiago de Compostela; Santiago de Compostela Spain
| | - Jose Ramos
- POLYMAT, Bionanoparticles Group, Department of Applied Chemistry, UFI 11/56, Faculty of Chemistry; University of the Basque Country UPV/EHU; Apdo. 1072 Donostia-San Sebastián 20080 Spain
| | - Pablo Taboada
- Condensed Matter Physics Department, Faculty of Physics, 15782 Campus Sur; Universidad de Santiago de Compostela; Santiago de Compostela Spain
| | - Jacqueline Forcada
- POLYMAT, Bionanoparticles Group, Department of Applied Chemistry, UFI 11/56, Faculty of Chemistry; University of the Basque Country UPV/EHU; Apdo. 1072 Donostia-San Sebastián 20080 Spain
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Albuquerque LJC, Annes K, Milazzotto MP, Mattei B, Riske KA, Jäger E, Pánek J, Štěpánek P, Kapusta P, Muraro PIR, De Freitas AGO, Schmidt V, Giacomelli C, Bonvent JJ, Giacomelli FC. Efficient Condensation of DNA into Environmentally Responsive Polyplexes Produced from Block Catiomers Carrying Amine or Diamine Groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:577-586. [PMID: 26677726 DOI: 10.1021/acs.langmuir.5b04080] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The intracellular delivery of nucleic acids requires a vector system as they cannot diffuse across lipid membranes. Although polymeric transfecting agents have been extensively investigated, none of the proposed gene delivery vehicles fulfill all of the requirements needed for an effective therapy, namely, the ability to bind and compact DNA into polyplexes, stability in the serum environment, endosome-disrupting capacity, efficient intracellular DNA release, and low toxicity. The challenges are mainly attributed to conflicting properties such as stability vs efficient DNA release and toxicity vs efficient endosome-disrupting capacity. Accordingly, investigations aimed at safe and efficient therapies are still essential to achieving gene therapy clinical success. Taking into account the mentioned issues, herein we have evaluated the DNA condensation ability of poly(ethylene oxide)113-b-poly[2-(diisopropylamino)ethyl methacrylate]50 (PEO113-b-PDPA50), poly(ethylene oxide)113-b-poly[2-(diethylamino)ethyl methacrylate]50 (PEO113-b-PDEA50), poly[oligo(ethylene glycol)methyl ether methacrylate]70-b-poly[oligo(ethylene glycol)methyl ether methacrylate10-co-2-(diethylamino)ethyl methacrylate47-co-2-(diisopropylamino)ethyl methacrylate47] (POEGMA70-b-P(OEGMA10-co-DEA47-co-DPA47), and poly[oligo(ethylene glycol)methyl ether methacrylate]70-b-poly{oligo(ethylene glycol)methyl ether methacrylate10-co-2-methylacrylic acid 2-[(2-(dimethylamino)ethyl)methylamino]ethyl ester44} (POEGMA70-b-P(OEGMA10-co-DAMA44). Block copolymers PEO113-b-PDEA50 and POEGMA70-b-P(OEGMA10-co-DEA47-co-DPA47) were evidenced to properly condense DNA into particles with a desirable size for cellular uptake via endocytic pathways (R(H) ≈ 65-85 nm). The structure of the polyplexes was characterized in detail by scattering techniques and atomic force microscopy. The isothermal titration calorimetric data revealed that the polymer/DNA binding is endothermic; therefore, the process in entropically driven. The combination of results supports that POEGMA70-b-P(OEGMA10-co-DEA47-co-DPA47) condenses DNA more efficiently and with higher thermodynamic outputs than does PEO113-b-PDEA50. Finally, circular dichroism spectroscopy indicated that the conformation of DNA remained the same after complexation and that the polyplexes are very stable in the serum environment.
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Affiliation(s)
- Lindomar J C Albuquerque
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André 09210-170, Brazil
| | - Kelly Annes
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André 09210-170, Brazil
| | - Marcella P Milazzotto
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André 09210-170, Brazil
| | - Bruno Mattei
- Departamento de Biofísica, Universidade Federal de São Paulo , São Paulo 04021-001, Brazil
| | - Karin A Riske
- Departamento de Biofísica, Universidade Federal de São Paulo , São Paulo 04021-001, Brazil
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry AS CR , 162 06 Prague, Czech Republic
| | - Jiří Pánek
- Institute of Macromolecular Chemistry AS CR , 162 06 Prague, Czech Republic
| | - Petr Štěpánek
- Institute of Macromolecular Chemistry AS CR , 162 06 Prague, Czech Republic
| | - Peter Kapusta
- J. Heyrovsky Institute of Physical Chemistry, 182 23 Prague, Czech Republic
| | - Paulo I R Muraro
- Departamento de Química, Universidade Federal de Santa Maria , Santa Maria 97105-900, Brazil
| | - Augusto G O De Freitas
- Departamento de Química, Universidade Federal de Santa Maria , Santa Maria 97105-900, Brazil
| | - Vanessa Schmidt
- Departamento de Química, Universidade Federal de Santa Maria , Santa Maria 97105-900, Brazil
| | - Cristiano Giacomelli
- Departamento de Química, Universidade Federal de Santa Maria , Santa Maria 97105-900, Brazil
| | - Jean-Jacques Bonvent
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André 09210-170, Brazil
| | - Fernando C Giacomelli
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André 09210-170, Brazil
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19
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Fu J, Schlenoff JB. Driving Forces for Oppositely Charged Polyion Association in Aqueous Solutions: Enthalpic, Entropic, but Not Electrostatic. J Am Chem Soc 2016; 138:980-90. [DOI: 10.1021/jacs.5b11878] [Citation(s) in RCA: 262] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jingcheng Fu
- Department of Chemistry and
Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
| | - Joseph B. Schlenoff
- Department of Chemistry and
Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
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20
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Microbubbles and Ultrasound: Therapeutic Applications in Diabetic Nephropathy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 880:309-30. [PMID: 26486345 DOI: 10.1007/978-3-319-22536-4_17] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Diabetic nephropathy (DN) remains one of the most common causes of end-stage renal disease. Current therapeutic strategies aiming at optimization of serum glucose and blood pressure are beneficial in early stage DN, but are unable to fully prevent disease progression. With the limitations of current medical therapies and the shortage of available donor organs for kidney transplantation, the need for novel therapies to address DN complications and prevent progression towards end-stage renal failure is crucial. The development of ultrasound technology for non-invasive and targeted in-vivo gene delivery using high power ultrasound and carrier microbubbles offers great therapeutic potential for the prevention and treatment of DN. The promising results from preclinical studies of ultrasound-mediated gene delivery (UMGD) in several DN animal models suggest that UMGD offers a unique, non-invasive platform for gene- and cell-based therapies targeted against DN with strong clinical translation potential.
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21
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Vitorazi L, Ould-Moussa N, Sekar S, Fresnais J, Loh W, Chapel JP, Berret JF. Evidence of a two-step process and pathway dependency in the thermodynamics of poly(diallyldimethylammonium chloride)/poly(sodium acrylate) complexation. SOFT MATTER 2014; 10:9496-9505. [PMID: 25347132 DOI: 10.1039/c4sm01461h] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recent studies have pointed out the importance of polyelectrolyte assembly in the elaboration of innovative nanomaterials. Beyond their structures, many important questions on the thermodynamics of association remain unanswered. Here, we investigate the complexation between poly(diallyldimethylammonium chloride) (PDADMAC) and poly(sodium acrylate) (PANa) chains using a combination of three techniques: isothermal titration calorimetry (ITC), static and dynamic light scattering and electrophoresis. Upon addition of PDADMAC to PANa or vice-versa, the results obtained by the different techniques agree well with each other, and reveal a two-step process. The primary process is the formation of highly charged polyelectrolyte complexes of size 100 nm. The secondary process is the transition towards a coacervate phase made of rich and poor polymer droplets. The binding isotherms measured are accounted for using a phenomenological model that provides the thermodynamic parameters for each reaction. Small positive enthalpies and large positive entropies consistent with a counterion release scenario are found throughout this study. Furthermore, this work stresses the importance of the underestimated formulation pathway or mixing order in polyelectrolyte complexation.
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Affiliation(s)
- L Vitorazi
- Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet, 75205 Paris, France.
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22
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Barrán-Berdón AL, Yélamos B, Malfois M, Aicart E, Junquera E. Ca(2+)-mediated anionic lipid-plasmid DNA lipoplexes. Electrochemical, structural, and biochemical studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:11704-11713. [PMID: 25211646 DOI: 10.1021/la502823z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Several experimental methods, such as zeta potential, gel electrophoresis, small-angle X-ray scattering, gene transfection, fluorescence microscopy, flow cytometry, and cell viability/cytotoxicity assays, have been used to analyze the potential of anionic lipids (AL) as effective nontoxic and nonviral DNA vectors, assisted by divalent cations. The lipoplexes studied are those comprised of the green fluorescent protein-encoding plasmid DNA pEGFP-C3, an anionic lipid as 1,2-dioleoyl-sn-glycero-3-phospho-(1'-rac-glycerol) (DOPG) or 1,2-dioleoyl-sn-glycero-3-phospho-L-serine (DOPS), and a zwitterionic lipid, the 1,2-dioleoyl-sn -glycero-3-phosphatidylethanolamine (DOPE, not charged at physiological pH). The studies have been carried on at different liposome and lipoplex compositions and in the presence of a variety of [Ca2+]. Electrochemical experiments reveal that DOPG/DOPE and DOPS/DOPE anionic liposomes may compact more effectively pDNA at low molar fractions (with an excess of DOPE) and at AL/pDNA ratios ≈20. Calcium concentrations around 15-20 mM are needed to yield lipoplexes neutral or slightly positive. From a structural standpoint, DOPG/DOPE-Ca2+-pDNA lipoplexes are self-assembled into a HIIc phase (inverted cylindrical micelles in hexagonal ordering with plasmid supercoils inside the cylinders), while DOPS/DOPE-Ca2+-pDNA lipoplexes show two phases in coexistence: one classical HIIc phase which contains pDNA supercoils and one Lα phase without pDNA among the lamellae, i.e., a lamellar stack of lipidic bilayers held together by Ca2+ bridges. Transfection and cell viability studies were done with HEK293T and HeLa cells in the presence of serum. Lipoplexes herein studied show moderate-to-low transfection levels combined with moderate-to-high cell viability, comparable to those yield by Lipofectamine2000*, which is a cationic lipid (CL) standard formulation, but none of them improve the output of typical CL gen vectors, mostly if they are gemini or dendritic. This fact would be indicating that, nowadays, lipofection via anionic lipids and divalent cations as mediators still needs to enhance transfection levels in order to be considered as a real and plausible alternative to lipofection through improved CLs-based lipoplexes.
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Affiliation(s)
- Ana L Barrán-Berdón
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física I, and ∥Departamento de Bioquímica y Biología Molecular I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain
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23
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Akyüz A, Buyukunsal G, Paril A. Online monitoring of diallyldimethylammonium chloride polymerization. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ali Akyüz
- Mehmet Akif Ersoy University; Bucak Emin Gulmez Technical Sciences Vocational Higher School; Burdur 15300 Turkey
| | - Gulsen Buyukunsal
- Department of Chemistry; Istanbul Technical University; Istanbul 34469 Turkey
| | - Ahmet Paril
- Adel Kalemcilik Ticaret ve Sanayi A.S; Istanbul 34870 Turkey
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24
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Rodríguez-Velázquez E, Silva M, Taboada P, Mano JF, Suárez-Quintanilla D, Alatorre-Meda M. Enhanced Cell Affinity of Chitosan Membranes Mediated by Superficial Cross-Linking: A Straightforward Method Attainable by Standard Laboratory Procedures. Biomacromolecules 2013; 15:291-301. [DOI: 10.1021/bm401541v] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - João F Mano
- 3B’s
Research Group, Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of
the European Institute of Excellence on Tissue Engineering and Regenerative
Medicine, AvePark, Zona Industrial
da Gandra, S. Claudio do Barco, 4806−909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, Braga/Guimarães, Portugal
| | - David Suárez-Quintanilla
- International
Orthodontic Center (IOC), Avenida de
A Coruña 6, E-15706 Santiago de Compostela, Spain
| | - Manuel Alatorre-Meda
- 3B’s
Research Group, Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of
the European Institute of Excellence on Tissue Engineering and Regenerative
Medicine, AvePark, Zona Industrial
da Gandra, S. Claudio do Barco, 4806−909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, Braga/Guimarães, Portugal
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25
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Dávila-Ibáñez AB, Buurma NJ, Salgueiriño V. Assessment of DNA complexation onto polyelectrolyte-coated magnetic silica nanoparticles. NANOSCALE 2013; 5:4797-4807. [PMID: 23612682 DOI: 10.1039/c3nr34358h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The polyelectrolyte-DNA complexation method to form magnetoplexes using silica-coated iron oxide magnetic nanoparticles as inorganic substrates is an attractive and promising process in view of the potential applications including magnetofection, DNA extraction and purification, and directed assembly of nanostructures. Herein, we present a systematic physico-chemical study that provides clear evidence of the type of interactions established, reflects the importance of the DNA length, the nanoparticle size and the ionic strength, and permits the identification of the parameters controlling both the stability and the type of magnetoplexes formed. This information can be used to develop targeted systems with properties optimized for the various proposed applications of magnetoplexes.
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26
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Chitosan–hyaluronic acid nanoparticles for gene silencing: The role of hyaluronic acid on the nanoparticles’ formation and activity. Colloids Surf B Biointerfaces 2013; 103:615-23. [DOI: 10.1016/j.colsurfb.2012.11.009] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 11/04/2012] [Accepted: 11/13/2012] [Indexed: 11/20/2022]
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27
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Robles E, Villar E, Alatorre-Meda M, Burboa MG, Valdez MA, Taboada P, Mosquera V. Effects of the hydrophobization on chitosan-insulin nanoparticles obtained by an alkylation reaction on chitosan. J Appl Polym Sci 2012. [DOI: 10.1002/app.38870] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Ghai R, Falconer RJ, Collins BM. Applications of isothermal titration calorimetry in pure and applied research--survey of the literature from 2010. J Mol Recognit 2012; 25:32-52. [PMID: 22213449 DOI: 10.1002/jmr.1167] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Isothermal titration calorimetry (ITC) is a biophysical technique for measuring the formation and dissociation of molecular complexes and has become an invaluable tool in many branches of science from cell biology to food chemistry. By measuring the heat absorbed or released during bond formation, ITC provides accurate, rapid, and label-free measurement of the thermodynamics of molecular interactions. In this review, we survey the recent literature reporting the use of ITC and have highlighted a number of interesting studies that provide a flavour of the diverse systems to which ITC can be applied. These include measurements of protein-protein and protein-membrane interactions required for macromolecular assembly, analysis of enzyme kinetics, experimental validation of molecular dynamics simulations, and even in manufacturing applications such as food science. Some highlights include studies of the biological complex formed by Staphylococcus aureus enterotoxin C3 and the murine T-cell receptor, the mechanism of membrane association of the Parkinson's disease-associated protein α-synuclein, and the role of non-specific tannin-protein interactions in the quality of different beverages. Recent developments in automation are overcoming limitations on throughput imposed by previous manual procedures and promise to greatly extend usefulness of ITC in the future. We also attempt to impart some practical advice for getting the most out of ITC data for those researchers less familiar with the method.
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Affiliation(s)
- Rajesh Ghai
- Institute for Molecular Bioscience (IMB), University of Queensland, St. Lucia, Queensland, 4072, Australia
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29
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Wu B, Li C, Yang H, Liu G, Zhang G. Formation of Polyelectrolyte Multilayers by Flexible and Semiflexible Chains. J Phys Chem B 2012; 116:3106-14. [DOI: 10.1021/jp212621h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Bo Wu
- Hefei National Laboratory for
Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei,
P. R. China 230026
| | - Chunliang Li
- Hefei National Laboratory for
Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei,
P. R. China 230026
| | - Haiyang Yang
- Department
of Polymer Science
and Engineering, University of Science and Technology of China, Hefei, P. R. China 230026
| | - Guangming Liu
- Hefei National Laboratory for
Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei,
P. R. China 230026
| | - Guangzhao Zhang
- Faculty of Materials Science and
Engineering, South China University of Technology, Guangzhou, P. R. China 510640
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30
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Qin C, Chen C, Xie Q, Wang L, He X, Huang Y, Zhou Y, Xie F, Yang D, Yao S. Amperometric enzyme electrodes of glucose and lactate based on poly(diallyldimethylammonium)-alginate-metal ion-enzyme biocomposites. Anal Chim Acta 2012; 720:49-56. [DOI: 10.1016/j.aca.2012.01.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Revised: 01/14/2012] [Accepted: 01/20/2012] [Indexed: 11/27/2022]
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31
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Mukherjee S, Dan A, Bhattacharya SC, Panda AK, Moulik SP. Physicochemistry of interaction between the cationic polymer poly(diallyldimethylammonium chloride) and the anionic surfactants sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, and sodium N-dodecanoylsarcosinate in water and isopropyl alcohol-water media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5222-33. [PMID: 21466231 DOI: 10.1021/la200033x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The physicochemistry of interaction of the cationic polymer poly(diallyldimethylammonium chloride) (PDADMAC) with the anionic surfactants sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, and sodium N-dodecanoylsarcosinate was studied in detail using tensiometry, turbidimetry, calorimetry, viscometry, dynamic light scattering (DLS), and scanning electron microscopy (SEM). Fair interaction initially formed induced small micelles of the surfactants and later on produced free normal micelles in solution. The interaction process yielded coacervates that initially grew by aggregation in the aqueous medium and disintegrated into smaller species at higher surfactant concentration. The phenomena observed were affected by the presence of isopropyl alcohol (IP) in the medium. The hydrodynamic sizes of the dispersed polymer and its surfactant-interacted species were determined by DLS measurements. The surface morphologies of the solvent-removed PDADMAC and its surfactant-interacted complexes from water and IP-water media were examined by the SEM technique. The morphologies witnessed different patterns depending on the composition and the solvent environment. The head groups of the dodecyl chain containing surfactants made differences in the interaction process.
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Affiliation(s)
- Suvasree Mukherjee
- Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata-700032, West Bengal, India
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32
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Alatorre-Meda M, Taboada P, Hartl F, Wagner T, Freis M, Rodríguez JR. The influence of chitosan valence on the complexation and transfection of DNA: The weaker the DNA–chitosan binding the higher the transfection efficiency. Colloids Surf B Biointerfaces 2011; 82:54-62. [DOI: 10.1016/j.colsurfb.2010.08.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Revised: 07/14/2010] [Accepted: 08/06/2010] [Indexed: 01/15/2023]
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