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Grinberg VY, Burova TV, Grinberg NV, Dubovik AS, Tikhonov VE, Moskalets AP, Orlov VN, Plashchina IG, Khokhlov AR. Chitosan polyplexes: Energetics of formation and conformational changes in DNA upon binding and release. Int J Biol Macromol 2023; 250:126265. [PMID: 37567527 DOI: 10.1016/j.ijbiomac.2023.126265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
Energetics of chitosan (CS) polyplexes and conformational stability of bound DNA were studied at pH 5.0 by ITC and HS-DSC, respectively. The CS-DNA binding isotherm was well approximated by the McGhee-von Hippel model suggesting the binding mechanism to be a cooperative attachment of interacting CS ligands to the DNA matrix. Melting thermograms of polyplexes revealed the transformation of different conformational forms of bound DNA in dependence on the CS/DNA weight ratio rw. At 0
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Affiliation(s)
- Valerij Y Grinberg
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, Moscow 119991, Russian Federation; N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygin St. 4, Moscow 119991, Russian Federation.
| | - Tatiana V Burova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, Moscow 119991, Russian Federation
| | - Natalia V Grinberg
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, Moscow 119991, Russian Federation
| | - Alexander S Dubovik
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, Moscow 119991, Russian Federation; N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygin St. 4, Moscow 119991, Russian Federation
| | - Vladimir E Tikhonov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, Moscow 119991, Russian Federation
| | - Alexander P Moskalets
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, Moscow 119991, Russian Federation
| | - Victor N Orlov
- A.N. Belozerskij Institute of Physico-chemical Biology, M.V. Lomonosov Moscow State University, Vorobyevy Gory, 119334 Moscow, Russian Federation
| | - Irina G Plashchina
- N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygin St. 4, Moscow 119991, Russian Federation
| | - Alexei R Khokhlov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, Moscow 119991, Russian Federation; M.V. Lomonosov Moscow State University, Physics Department, Vorobyevy Gory, 119334 Moscow, Russian Federation
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Mirón-Barroso S, Correia JS, Frampton AE, Lythgoe MP, Clark J, Tookman L, Ottaviani S, Castellano L, Porter AE, Georgiou TK, Krell J. Polymeric Carriers for Delivery of RNA Cancer Therapeutics. Noncoding RNA 2022; 8:ncrna8040058. [PMID: 36005826 PMCID: PMC9412371 DOI: 10.3390/ncrna8040058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 12/04/2022] Open
Abstract
As research uncovers the underpinnings of cancer biology, new targeted therapies have been developed. Many of these therapies are small molecules, such as kinase inhibitors, that target specific proteins; however, only 1% of the genome encodes for proteins and only a subset of these proteins has ‘druggable’ active binding sites. In recent decades, RNA therapeutics have gained popularity due to their ability to affect targets that small molecules cannot. Additionally, they can be manufactured more rapidly and cost-effectively than small molecules or recombinant proteins. RNA therapeutics can be synthesised chemically and altered quickly, which can enable a more personalised approach to cancer treatment. Even though a wide range of RNA therapeutics are being developed for various indications in the oncology setting, none has reached the clinic to date. One of the main reasons for this is attributed to the lack of safe and effective delivery systems for this type of therapeutic. This review focuses on current strategies to overcome these challenges and enable the clinical utility of these novel therapeutic agents in the cancer clinic.
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Affiliation(s)
- Sofía Mirón-Barroso
- Department of Surgery and Cancer, Imperial College, London W12 0HS, UK; (A.E.F.); (M.P.L.); (J.C.); (L.T.); (J.K.)
- Correspondence:
| | - Joana S. Correia
- Department of Materials, Imperial College London, London SW7 2AZ, UK; (J.S.C.); (A.E.P.); (T.K.G.)
| | - Adam E. Frampton
- Department of Surgery and Cancer, Imperial College, London W12 0HS, UK; (A.E.F.); (M.P.L.); (J.C.); (L.T.); (J.K.)
- Department of Clinical and Experimental Medicine, University of Surrey, Guildford GU2 7XH, UK
| | - Mark P. Lythgoe
- Department of Surgery and Cancer, Imperial College, London W12 0HS, UK; (A.E.F.); (M.P.L.); (J.C.); (L.T.); (J.K.)
| | - James Clark
- Department of Surgery and Cancer, Imperial College, London W12 0HS, UK; (A.E.F.); (M.P.L.); (J.C.); (L.T.); (J.K.)
| | - Laura Tookman
- Department of Surgery and Cancer, Imperial College, London W12 0HS, UK; (A.E.F.); (M.P.L.); (J.C.); (L.T.); (J.K.)
| | - Silvia Ottaviani
- Department of Biosciences, Nottingham Trent University, Nottingham NG1 4FQ, UK;
| | | | - Alexandra E. Porter
- Department of Materials, Imperial College London, London SW7 2AZ, UK; (J.S.C.); (A.E.P.); (T.K.G.)
| | - Theoni K. Georgiou
- Department of Materials, Imperial College London, London SW7 2AZ, UK; (J.S.C.); (A.E.P.); (T.K.G.)
| | - Jonathan Krell
- Department of Surgery and Cancer, Imperial College, London W12 0HS, UK; (A.E.F.); (M.P.L.); (J.C.); (L.T.); (J.K.)
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Li Z, Mei S, Dong Y, She F, Li P, Li Y, Kong L. Multi-Functional Core-Shell Nanofibers for Wound Healing. NANOMATERIALS 2021; 11:nano11061546. [PMID: 34208135 PMCID: PMC8230886 DOI: 10.3390/nano11061546] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 05/28/2021] [Accepted: 06/09/2021] [Indexed: 11/30/2022]
Abstract
Core-shell nanofibers have great potential for bio-medical applications such as wound healing dressings where multiple drugs and growth factors are expected to be delivered at different healing phases. Compared to monoaxial nanofibers, core-shell nanofibers can control the drug release profile easier, providing sustainable and effective drugs and growth factors for wound healing. However, it is challenging to produce core-shell structured nanofibers with a high production rate at low energy consumption. Co-axial centrifugal spinning is an alternative method to address the above limitations to produce core-shell nanofibers effectively. In this study, a co-axial centrifugal spinning device was designed and assembled to produce core-shell nanofibers for controlling the release rate of ibuprofen and hEGF in inflammation and proliferation phases during the wound healing process. Core-shell structured nanofibers were confirmed by TEM. This work demonstrated that the co-axial centrifugal spinning is a high productivity process that can produce materials with a 3D environment mimicking natural tissue scaffold, and the specific drug can be loaded into different layers to control the drug release rate to improve the drug efficiency and promote wound healing.
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Affiliation(s)
- Zhen Li
- Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; (Z.L.); (Y.D.)
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia;
- Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University, Foshan 528000, China
| | - Shunqi Mei
- Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; (Z.L.); (Y.D.)
- Correspondence: (S.M.); (L.K.)
| | - Yajie Dong
- Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; (Z.L.); (Y.D.)
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia;
| | - Fenghua She
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia;
| | - Puwang Li
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524091, China;
| | - Yongzhen Li
- Agricultural Product Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China;
| | - Lingxue Kong
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia;
- Correspondence: (S.M.); (L.K.)
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Polyplexes for gene and nucleic acid delivery: Progress and bottlenecks. Eur J Pharm Sci 2020; 150:105358. [PMID: 32360232 DOI: 10.1016/j.ejps.2020.105358] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 12/12/2022]
Abstract
Gene and nucleic acid delivery constitute a huge biological challenge and several attempts have been made by research laboratories to address this issue. Cationic polymers and cationic lipids (positively charged carriers) can be utilized for the transport of these biomolecules. Polyplexes (PPs) are interpolyelectrolyte complexes which are spontaneously formed through the electrostatic condensation between nucleic acid and a cationic polymer. PPs are capable of high-density payload condensation leading to cell internalization and subsequent protection from enzymatic degradation. Most cationic polymers can cross extracellular barriers, but it is more challenging to overcome intracellular barriers (efficient disassembly and endosomal escape). In this review, the use of PPs for gene and nucleic acid delivery is discussed.
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Interactions of bioactive molecules with thin dendritic glycopolymer layers. Biointerphases 2018; 13:06D405. [PMID: 30227717 DOI: 10.1116/1.5042703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The authors report on highly swellable, stable layers of spherical dendritic glycopolymers, composed of hyperbranched poly(ethylene imine) (PEI) as core and two different maltose shells (A = dense shell and B = open shell). These glycopolymers are cross-linked and attached with poly(ethylene-alt-maleic anhydride) (PEMA) or citric acid on SiOx substrates. The swelling and adsorption of biomolecules were analyzed by spectroscopic ellipsometry and quartz crystal microbalance with dissipation. The swelling degree and complexation with the drug molecule adenosine triphosphate (ATP) were found to be up to 10 times higher for dendritic glycopolymer layers cross-linked with PEMA than for layers cross-linked with citric acid. ATP complexation by electrostatic interaction with the PEI cores was confirmed by x-ray photoelectron spectroscopy analysis. Complexation led to partial collapsing, stiffening, and increase of polymer layer viscosity of the PEMA cross-linked layers. From modeling of ellipsometric data, it was deduced that ATP complexation preferably takes place at the polymer layer-solution interface. The size effect of the adsorbates was investigated by comparing ATP complexation with the adsorption of larger vitamin B12 and human serum albumin (HSA) protein. PEI-Mal A cross-linked with PEMA was found to be resistant toward B12 and HSA adsorption due to the diffusion barrier of the polymer layer. Thus, the authors present potentially biocompatible polymer surfaces for drug loading and their surface supported release.
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Albuquerque LJC, Alavarse AC, Carlan da Silva MC, Zilse MS, Barth MT, Bellettini IC, Giacomelli FC. Sweet Vector for Gene Delivery: the Sugar Decoration of Polyplexes Reduces Cytotoxicity with a Balanced Effect on Gene Expression. Macromol Biosci 2017; 18. [DOI: 10.1002/mabi.201700299] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/09/2017] [Indexed: 01/22/2023]
Affiliation(s)
| | - Alex C. Alavarse
- Centro de Ciências Naturais e Humanas; Universidade Federal do ABC; Santo André 09210-580 Brazil
| | - Maria C. Carlan da Silva
- Centro de Ciências Naturais e Humanas; Universidade Federal do ABC; Santo André 09210-580 Brazil
| | - Morgana S. Zilse
- Departamento de Ciências Exatas e Educação; Universidade Federal de Santa Catarina; Blumenau 89036-256 Brazil
| | - Maitê T. Barth
- Departamento de Ciências Exatas e Educação; Universidade Federal de Santa Catarina; Blumenau 89036-256 Brazil
| | - Ismael C. Bellettini
- Departamento de Ciências Exatas e Educação; Universidade Federal de Santa Catarina; Blumenau 89036-256 Brazil
| | - Fernando C. Giacomelli
- Centro de Ciências Naturais e Humanas; Universidade Federal do ABC; Santo André 09210-580 Brazil
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Acebo C, Ramis X, Serra A. Improved epoxy thermosets by the use of poly(ethyleneimine) derivatives. PHYSICAL SCIENCES REVIEWS 2017. [DOI: 10.1515/psr-2016-0128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Abstract
Epoxy resins are commonly used as thermosetting materials due to their excellent mechanical properties, high adhesion to many substrates and good heat and chemical resistances. This type of thermosets is intensively used in a wide range of fields, where they act as fiber-reinforced materials, general-purpose adhesives, high-performance coatings and encapsulating materials. These materials are formed by the chemical reaction of multifunctional epoxy monomers forming a polymer network produced through an irreversible way. In this article the improvement of the characteristics of epoxy thermosets using different hyperbranched poly(ethyleneimine) (PEI) derivatives will be explained.
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DNA polyplexes with dendritic glycopolymer-entrapped gold nanoparticles. Colloids Surf B Biointerfaces 2017; 154:74-81. [DOI: 10.1016/j.colsurfb.2017.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 02/27/2017] [Accepted: 03/01/2017] [Indexed: 11/21/2022]
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Bellettini IC, Fayad SJ, Machado VG, Minatti E. Properties of polyplexes formed through interaction between hydrophobically-modified poly(ethylene imine)s and calf thymus DNA in aqueous solution. SOFT MATTER 2017; 13:2609-2619. [PMID: 28327732 DOI: 10.1039/c6sm02835g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Polycationic polymers and DNA form soluble complexes in aqueous solution, which allows the transfer of genetic material into cells. Therefore, these chemically-modified polymers are of interest for use in studies aimed at better transfection efficiency and gene expression along with reduced cytotoxicity. In this study, branched poly(ethylene imine) (PEI) was modified by alkylation with n-alkyl groups (n = 4, 6, 8 and 12 carbons). The polyplexes formed through interaction of the modified PEIs and calf thymus DNA (ctDNA) were investigated using UV-Vis spectrophotometry, ethidium bromide fluorescence emission, circular dichroism spectroscopy, dynamic light scattering, and small-angle X-ray scattering techniques along with the determination of the zeta potential and viscosity. According to the results obtained, the formation of ctDNA-PEI polyplexes occurs in three steps. Firstly, when a small amount of polyelectrolyte is present the ctDNA chains are partially compacted. Subsequently, with the addition of more polyelectrolyte, the complexes have a null charge density and micrometric size. Lastly, with a higher concentration of PEI, the ctDNA is fully compacted by the PEI chains, leading to positively charged complexes with Rh values in the range of 52.0-86.0 nm. The viscosity and SAXS analysis suggested that the unmodified PEI exhibits the strongest interaction and promotes the best ctDNA condensation.
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Affiliation(s)
- I C Bellettini
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, Florianópolis, SC 88040-900, Brazil.
| | - S J Fayad
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, Florianópolis, SC 88040-900, Brazil.
| | - V G Machado
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, Florianópolis, SC 88040-900, Brazil.
| | - E Minatti
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, Florianópolis, SC 88040-900, Brazil.
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Evaluation of Maltose-Based Cationic Liposomes with Different Hydrophobic Tails for Plasmid DNA Delivery. Molecules 2017; 22:molecules22030406. [PMID: 28287501 PMCID: PMC6155304 DOI: 10.3390/molecules22030406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 02/24/2017] [Accepted: 02/27/2017] [Indexed: 12/31/2022] Open
Abstract
In this paper, three cationic glycolipids with different hydrophobic chains Malt-DiC12MA (IX a), Malt-DiC14MA (IX b) and Malt-DiC16MA (IX c) were constructed by using maltose as starting material via peracetylation, selective 1-O-deacetylation, trichloroacetimidation, glycosylation, azidation, deacetylation, Staudinger reaction, tertiary amination and quaternization. Target compounds and some intermediates were characterized by 1H-NMR, 13C-NMR, 1H-1H COSY and 1H-13C HSQC. The results of gel electrophoresis assay, atomic force microscopy images (AFM) and dynamic light scattering (DLS) demonstrate that all the liposomes could efficiently bind and compact DNA (N/P ratio less than 2) into nanoparticles with proper size (88 nm–146 nm, PDI < 0.4) and zeta potential (+15 mV–+26 mV). The transfection efficiency and cellular uptake of glycolipids in HEK293 cell were evaluated through the enhanced green fluorescent protein (EGFP) expression and Cy3-labeled pEGFP-C1 (Enhanced Green Fluorescent Protein plasmid) images, respectively. Importantly, it indicated that Malt-DiC14MA exhibited high gene transfer efficiency and better uptake capability at N/P ratios of 8:1. Additionally, the result of cell viability showed glycolipids exhibited low biotoxicity and good biocompatibility by thiazolyl blue tetrazolium bromide (MTT) assay.
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