251
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García-Guzmán P, Medina-Torres L, Calderas F, Bernad-Bernad MJ, Gracia-Mora J, Mena B, Manero O. Characterization of hybrid microparticles/Montmorillonite composite with raspberry-like morphology for Atorvastatin controlled release. Colloids Surf B Biointerfaces 2018; 167:397-406. [DOI: 10.1016/j.colsurfb.2018.04.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 03/22/2018] [Accepted: 04/04/2018] [Indexed: 11/30/2022]
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252
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Li W, Zhang G, Guan T, Zhang X, Khosrozadeh A, Xing M, Kong J. Manipulable Permeability of Nanogel Encapsulation on Cells Exerts Protective Effect against TNF-α-Induced Apoptosis. ACS Biomater Sci Eng 2018; 4:2825-2835. [DOI: 10.1021/acsbiomaterials.8b00654] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Guohui Zhang
- Department of Forensic Medicine, Hebei North University, Zhangjiakou 075000, China
| | | | | | | | | | - Jiming Kong
- Department of Forensic Medicine, Hebei North University, Zhangjiakou 075000, China
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253
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Alazzo A, Lovato T, Collins H, Taresco V, Stolnik S, Soliman M, Spriggs K, Alexander C. Structural variations in hyperbranched polymers prepared via thermal polycondensation of lysine and histidine and their effects on DNA delivery. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/jin2.36] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ali Alazzo
- School of Pharmacy; University of Nottingham; Nottingham NG7 2RD UK
- Department of Pharmaceutics; University of Mosul; Mosul Iraq
| | - Tatiana Lovato
- School of Pharmacy; University of Nottingham; Nottingham NG7 2RD UK
| | - Hilary Collins
- School of Pharmacy; University of Nottingham; Nottingham NG7 2RD UK
| | - Vincenzo Taresco
- School of Pharmacy; University of Nottingham; Nottingham NG7 2RD UK
| | - Snjezana Stolnik
- School of Pharmacy; University of Nottingham; Nottingham NG7 2RD UK
| | - Mahmoud Soliman
- Department of Pharmaceutics; Ain Shams University; Cairo Egypt
| | - Keith Spriggs
- School of Pharmacy; University of Nottingham; Nottingham NG7 2RD UK
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254
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Narayanan K, Khan M, Gopalan B, Antony J, Das T, Yang YY, Wan ACA. Sensitization of Cancer Cells via Non-Viral Delivery of Apoptosis Inducing Proteins Using a Cationic Bolaamphiphile. Biotechnol J 2018; 14:e1800020. [PMID: 29802765 DOI: 10.1002/biot.201800020] [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: 01/04/2018] [Revised: 05/18/2018] [Indexed: 01/10/2023]
Abstract
Cationic bolaamphiphile polymers had been previously studied as efficient delivery system for the delivery of proteins with relatively low toxicity. Here, the authors investigate the use of a protein delivery system based on a cationic bolaamphiphile to sensitize cancer cells toward apoptosis-inducing drugs as a novel approach for cancer therapy. The authors demonstrates the efficacy of the system by two strategies. The first strategy involves delivery of a survivin antibody to inhibit survivin activity. Sensitization of MCF-7 cells to doxorubicin is observed by survivin inhibition by antibodies. The IC50 of doxorubicin is reduced ≈2.5-fold after delivery of survivin antibodies to breast cancer cells and induction of apoptosis is shown by Western blotting with apoptosis specific antibodies. In a second approach, functional wild type p53 is delivered into p53-null liver cancer (Hep3B) cells, sensitizing the cells toward the p53 pathway drug, Nutlin. Nutlin reduced the viability of Hep3B cells by ≈42% at 15 μM concentration, demonstrating the effectiveness of p53 delivery. The expression of p21, a downstream target of p53 further confirmed the functional status of the delivered protein. In conclusion. The successful delivery of apoptosis inducing proteins and sensitization of cancer cells via cationic bolaamphiphile polymer represents a promising system for cancer therapeutics.
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Affiliation(s)
| | - Majad Khan
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 34463, Kingdom of Saudi Arabia
| | - Began Gopalan
- Institute of Bioengineering and Nanotechnology, The NanosSingapore, 138669, Singapore
| | - Jane Antony
- Institute of Bioengineering and Nanotechnology, The NanosSingapore, 138669, Singapore
| | - Tultul Das
- Institute of Bioengineering and Nanotechnology, The NanosSingapore, 138669, Singapore
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, The NanosSingapore, 138669, Singapore
| | - Andrew C A Wan
- Institute of Bioengineering and Nanotechnology, The NanosSingapore, 138669, Singapore
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255
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Brock DJ, Kustigian L, Jiang M, Graham K, Wang TY, Erazo-Oliveras A, Najjar K, Zhang J, Rye H, Pellois JP. Efficient cell delivery mediated by lipid-specific endosomal escape of supercharged branched peptides. Traffic 2018; 19:421-435. [PMID: 29582528 DOI: 10.1111/tra.12566] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 03/14/2018] [Accepted: 03/15/2018] [Indexed: 12/30/2022]
Abstract
Various densely charged polycationic species, whether of biological or synthetic origin, can penetrate human cells, albeit with variable efficiencies. The molecular underpinnings involved in such transport remain unclear. Herein, we assemble 1, 2 or 3 copies of the HIV peptide TAT on a synthetic scaffold to generate branched cell-permeable prototypes with increasing charge density. We establish that increasing TAT copies dramatically increases the cell penetration efficiency of the peptides while simultaneously enabling the efficient cytosolic delivery of macromolecular cargos. Cellular entry involves the leaky fusion of late endosomal membranes enriched with the anionic lipid BMP. Derivatives with multiple TAT branches induce the leakage of BMP-containing lipid bilayers, liposomal flocculation, fusion and an increase in lamellarity. In contrast, while the monomeric counterpart 1TAT binds to the same extent and causes liposomal flocculation, 1TAT does not cause leakage, induce fusion or a significant increase in lamellarity. Overall, these results indicate that an increase in charge density of these branched structures leads to the emergence of lipid specific membrane-disrupting and cell-penetrating activities.
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Affiliation(s)
- Dakota J Brock
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas
| | - Lauren Kustigian
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas
| | - Mengqiu Jiang
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas
| | - Kristin Graham
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas
| | - Ting-Yi Wang
- Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York
| | | | - Kristina Najjar
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas
| | - Junjie Zhang
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas
| | - Hays Rye
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas
| | - Jean-Philippe Pellois
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas.,Department of Chemistry, Texas A&M University, College Station, Texas
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256
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257
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Etchenausia L, Deniau E, Brûlet A, Forcada J, Save M. Cationic Thermoresponsive Poly(N-vinylcaprolactam) Microgels Synthesized by Emulsion Polymerization Using a Reactive Cationic Macro-RAFT Agent. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00155] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Laura Etchenausia
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux, IPREM, UMR5254, CNRS, University Pau & Pays Adour, 64000 Pau, France
- Departamento de Química Aplicada, Facultad de Ciencias Químicas, Universidad del País Vasco UPV/EHU, 20018 Donostia-San Sebastian, Spain
| | - Elise Deniau
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux, IPREM, UMR5254, CNRS, University Pau & Pays Adour, 64000 Pau, France
| | - Annie Brûlet
- CEA CNRS CEA Saclay, UMR12, Laboratoire Léon Brillouin, F-91191 Gif Sur Yvette, France
| | - Jacqueline Forcada
- Departamento de Química Aplicada, Facultad de Ciencias Químicas, Universidad del País Vasco UPV/EHU, 20018 Donostia-San Sebastian, Spain
| | - Maud Save
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux, IPREM, UMR5254, CNRS, University Pau & Pays Adour, 64000 Pau, France
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258
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Wu P, Chen H, Jin R, Weng T, Ho JK, You C, Zhang L, Wang X, Han C. Non-viral gene delivery systems for tissue repair and regeneration. J Transl Med 2018; 16:29. [PMID: 29448962 PMCID: PMC5815227 DOI: 10.1186/s12967-018-1402-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 02/07/2018] [Indexed: 12/11/2022] Open
Abstract
Critical tissue defects frequently result from trauma, burns, chronic wounds and/or surgery. The ideal treatment for such tissue loss is autografting, but donor sites are often limited. Tissue engineering (TE) is an inspiring alternative for tissue repair and regeneration (TRR). One of the current state-of-the-art methods for TRR is gene therapy. Non-viral gene delivery systems (nVGDS) have great potential for TE and have several advantages over viral delivery including lower immunogenicity and toxicity, better cell specificity, better modifiability, and higher productivity. However, there is no ideal nVGDS for TRR, hence, there is widespread research to improve their properties. This review introduces the basic principles and key aspects of commonly-used nVGDSs. We focus on recent advances in their applications, current challenges, and future directions.
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Affiliation(s)
- Pan Wu
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Haojiao Chen
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Ronghua Jin
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Tingting Weng
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Jon Kee Ho
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Chuangang You
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Liping Zhang
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Xingang Wang
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China.
| | - Chunmao Han
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China.
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259
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Huang X, Fang B, Xu Z, Cao Z, Zeng R, Tu M, Zhao J. Branched dicationically-charged phosphodicholine (PdC) modified chitosan with specific associated water structure and unique interactions with biocomponents. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2017.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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260
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Deen GR, Loh XJ. Stimuli-Responsive Cationic Hydrogels in Drug Delivery Applications. Gels 2018; 4:E13. [PMID: 30674789 PMCID: PMC6318685 DOI: 10.3390/gels4010013] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/29/2018] [Accepted: 01/30/2018] [Indexed: 12/11/2022] Open
Abstract
Stimuli-responsive, smart, intelligent, or environmentally sensitive polymers respond to changes in external stimuli such as pH, temperature, ionic strength, surfactants, pressure, light, biomolecules, and magnetic field. These materials are developed in various network architectures such as block copolymers, crosslinked hydrogels, nanogels, inter-penetrating networks, and dendrimers. Stimuli-responsive cationic polymers and hydrogels are an interesting class of "smart" materials that respond reversibly to changes in external pH. These materials have the ability to swell extensively in solutions of acidic pH and de-swell or shrink in solutions of alkaline pH. This reversible swelling-shrinking property brought about by changes in external pH conditions makes these materials useful in a wide range of applications such as drug delivery systems and chemical sensors. This article focuses mainly on the properties of these interesting materials and their applications in drug delivery systems.
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Affiliation(s)
- G Roshan Deen
- Soft Materials Laboratory, Natural Sciences and Science Education AG, National Institute of Education, Nanyang Technological University, 1-Nanyang Walk, Singapore 637616, Singapore.
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, 2-Fusionopolis Way, Singapore 138634, Singapore.
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261
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Francoia JP, Vial L. Everything You Always Wanted to Know about Poly-l-lysine Dendrigrafts (But Were Afraid to Ask). Chemistry 2018; 24:2806-2814. [PMID: 29034997 DOI: 10.1002/chem.201704147] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 10/12/2017] [Indexed: 12/12/2022]
Abstract
Less than a decade ago, dendrigrafts of poly-l-lysine (DGLs) joined the family of polycationic dendritic macromolecules. Resulting from the iterative polycondensation of an N-carboxyanhydride in water, four generations of the dendrigraft can be obtained on a multigram scale and without chromatographic purification. DGLs share features with both dendrimers and hyperbranched polymers, but turned out to have unique biophysical and bioactive properties. The macromolecules-in their native form or functionalized-have been extensively characterized by various analytical and computational methods, and have already found numerous applications in the biomedical field, such as drug and gene delivery, biomaterials, tissue engineering, bioimaging, and biosensing. Despite a growing interest for DGLs, there is still plenty of room for further exciting developments that could result from a better exposure of these macromolecules, which is the ambition of this short review.
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Affiliation(s)
| | - Laurent Vial
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS-Université de Montpellier-ENSCM, Place Eugène, Bataillon, 34296, Montpellier cedex 5, France.,Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS-Université Claude Bernard, Lyon 1-CPE Lyon-INSA, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne cedex, France
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262
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Drożdż W, Bessin Y, Gervais V, Cao XY, Lehn JM, Stefankiewicz AR, Ulrich S. Switching Multivalent DNA Complexation using Metal-Controlled Cationic Supramolecular Self-Assemblies. Chemistry 2018; 24:1518-1521. [DOI: 10.1002/chem.201705630] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Wojciech Drożdż
- Faculty of Chemistry; Adam Mickiewicz University; Umultowska 89b 61-614 Poznań Poland
- Centre for Advanced Technologies; Adam Mickiewicz University; Umultowska 89c 61-614 Poznań Poland
| | - Yannick Bessin
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier; Ecole Nationale Supérieure de Chimie de Montpellier; 8 rue de l'Ecole Normale 34296 Montpellier cedex 5 France
| | - Virginie Gervais
- CNRS; Institut de Pharmacologie et de Biologie Structurale (IPBS); Université de Toulouse, UPS; 205 route de Narbonne 31077 Toulouse France
| | - Xiao-Yu Cao
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), UMR 7006, CNRS; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), UMR 7006, CNRS; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Artur R. Stefankiewicz
- Faculty of Chemistry; Adam Mickiewicz University; Umultowska 89b 61-614 Poznań Poland
- Centre for Advanced Technologies; Adam Mickiewicz University; Umultowska 89c 61-614 Poznań Poland
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier; Ecole Nationale Supérieure de Chimie de Montpellier; 8 rue de l'Ecole Normale 34296 Montpellier cedex 5 France
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263
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Zhou W, Lu L, Chen D, Wang Z, Zhai J, Wang R, Tan G, Mao J, Yu P, Ning C. Construction of high surface potential polypyrrole nanorods with enhanced antibacterial properties. J Mater Chem B 2018; 6:3128-3135. [DOI: 10.1039/c7tb03085a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
High surface potential polypyrrole nanorods with enhanced antibacterial properties.
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264
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Bouillon C, Bessin Y, Poncet F, Gary-Bobo M, Dumy P, Barboiu M, Bettache N, Ulrich S. Biomolecular dynamic covalent polymers for DNA complexation and siRNA delivery. J Mater Chem B 2018; 6:7239-7246. [DOI: 10.1039/c8tb01278d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dynamic covalent polymers made from modified amino acids complex nucleic acids and deliver siRNA in living cells.
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Affiliation(s)
| | | | | | | | | | - Mihail Barboiu
- IEM
- Adaptive Supramolecular Nanosystems Group
- Université de Montpellier
- CNRS
- ENSCM
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265
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Sutrisno L, Wang S, Li M, Luo Z, Wang C, Shen T, Chen P, Yang L, Hu Y, Cai K. Construction of three-dimensional net-like polyelectrolyte multilayered nanostructures onto titanium substrates for combined antibacterial and antioxidant applications. J Mater Chem B 2018; 6:5290-5302. [DOI: 10.1039/c8tb00192h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Fabrication of nanofibers and a bacteria-triggered antibiotic-releasing coating to modify titanium substrates for antibacterial and antioxidant applications.
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266
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Laiva AL, O'Brien FJ, Keogh MB. Innovations in gene and growth factor delivery systems for diabetic wound healing. J Tissue Eng Regen Med 2018; 12:e296-e312. [PMID: 28482114 PMCID: PMC5813216 DOI: 10.1002/term.2443] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 04/13/2017] [Accepted: 05/03/2017] [Indexed: 12/22/2022]
Abstract
The rise in lower extremity amputations due to nonhealing of foot ulcers in diabetic patients calls for rapid improvement in effective treatment regimens. Administration of growth factors (GFs) are thought to offer an off-the-shelf treatment; however, the dose- and time-dependent efficacy of the GFs together with the hostile environment of diabetic wound beds impose a major hindrance in the selection of an ideal route for GF delivery. As an alternative, the delivery of therapeutic genes using viral and nonviral vectors, capable of transiently expressing the genes until the recovery of the wounded tissue offers promise. The development of implantable biomaterial dressings capable of modulating the release of either single or combinatorial GFs/genes may offer solutions to this overgrowing problem. This article reviews the state of the art on gene and protein delivery and the strategic optimization of clinically adopted delivery strategies for the healing of diabetic wounds.
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Affiliation(s)
- Ashang Luwang Laiva
- Tissue Engineering Research Group, Department of AnatomyRoyal College of Surgeons in IrelandDublinIreland
- Advanced Materials and Bioengineering Research CentreRoyal College of Surgeons in Ireland and Trinity College DublinIreland
| | - Fergal J. O'Brien
- Tissue Engineering Research Group, Department of AnatomyRoyal College of Surgeons in IrelandDublinIreland
- Trinity Centre for BioengineeringTrinity Biomedical Sciences Institute, Trinity College DublinIreland
- Advanced Materials and Bioengineering Research CentreRoyal College of Surgeons in Ireland and Trinity College DublinIreland
| | - Michael B. Keogh
- Tissue Engineering Research Group, Department of AnatomyRoyal College of Surgeons in IrelandDublinIreland
- Medical University of BahrainAdliyaKingdom of Bahrain
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267
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Safari F, Rahmani Barouji S, Tamaddon AM. Strategies for Improving siRNA-Induced Gene Silencing Efficiency. Adv Pharm Bull 2017; 7:603-609. [PMID: 29399550 PMCID: PMC5788215 DOI: 10.15171/apb.2017.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 10/24/2017] [Accepted: 10/25/2017] [Indexed: 11/29/2022] Open
Abstract
Purpose: Human telomerase reverse transcriptase (hTERT)
plays a crucial role in tumorigenesis and progression of cancers. Gene silencing of hTERT
by short interfering RNA (siRNA) is considered as a promising strategy for cancer gene
therapy. Various algorithms have been devised for designing a high efficient siRNA which
is a significant issue in the clinical usage. Thereby, in the present study, the relation
of siRNA designing criteria and the gene silencing efficiency was evaluated. Methods: The siRNA sequences were designed and
characterized by using on line soft wares. Cationic co-polymer (polyethylene
glycol-g-polyethylene imine (PEG-g-PEI)) was used for the construction of polyelectrolyte
complexes (PECs) containing siRNAs. The cellular uptake of the PECs was evaluated. The
gene silencing efficiency of different siRNA sequences was investigated and the effect of
observing the rational designing on the functionality of siRNAs was assessed. Results: The size of PEG-g-PEI siRNA with N/P
(Nitrogen/Phosphate) ratio of 2.5 was 114 ± 0.645 nm. The transfection efficiency of PECs
was desirable (95.5% ± 2.4%.). The results of Real-Time PCR showed that main sequence (MS)
reduced the hTERT expression up to 90% and control positive sequence (CPS) up to 63%.
These findings demonstrated that the accessibility to the target site has priority than
the other criteria such as sequence preferences and thermodynamic features. Conclusion: siRNA opens a hopeful window in cancer therapy
which provides a convenient and tolerable therapeutic approach. Thereby, using the set of
criteria and rational algorithms in the designing of siRNA remarkably affect the gene
silencing efficiency.
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Affiliation(s)
- Fatemeh Safari
- Medical Biotechnology Department, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Shiraz University of Medical Sciences, Shiraz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Solmaz Rahmani Barouji
- Department of Traditional Medicine, Faculty of Traditional Medicine, University of Medical Sciences, Tabriz, Iran
| | - Ali Mohammad Tamaddon
- Center for Pharmaceutical Nanotechnology and Biomaterials, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
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268
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Kasprzak A, Grudzinski IP, Bamburowicz-Klimkowska M, Parzonko A, Gawlak M, Poplawska M. New Insight into the Synthesis and Biological Activity of the Polymeric Materials Consisting of Folic Acid and β-Cyclodextrin. Macromol Biosci 2017; 18. [DOI: 10.1002/mabi.201700289] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/30/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Artur Kasprzak
- Faculty of Chemistry; Warsaw University of Technology; Noakowskiego 3 Str. Warsaw 00-664 Poland
| | | | | | - Andrzej Parzonko
- Faculty of Pharmacy; Medical University of Warsaw; Banacha 1 Str. Warsaw 02-097 Poland
| | - Maciej Gawlak
- Faculty of Pharmacy; Medical University of Warsaw; Banacha 1 Str. Warsaw 02-097 Poland
| | - Magdalena Poplawska
- Faculty of Chemistry; Warsaw University of Technology; Noakowskiego 3 Str. Warsaw 00-664 Poland
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269
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Yang P, Bam M, Pageni P, Zhu T, Chen YP, Nagarkatti M, Decho AW, Tang C. Trio Act of Boronolectin with Antibiotic-Metal Complexed Macromolecules toward Broad-Spectrum Antimicrobial Efficacy. ACS Infect Dis 2017; 3:845-853. [PMID: 28976179 DOI: 10.1021/acsinfecdis.7b00132] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Bacterial infections, particularly by Gram-negative pathogens, have become a serious threat to global healthcare due to the diminishing effectiveness of existing antibiotics. We report a nontraditional therapy to combine three components in one macromolecular system, in which boronic acid adheres to peptidoglycan or lipopolysaccharide via boron-polyol based boronolectin chemistry, cationic metal polymer frameworks interact with negatively charged cell membranes, and β-lactam antibiotics are reinstated with enhanced vitality to attack bacteria via evading the detrimental enzyme-catalyzed hydrolysis. These macromolecular systems exhibited high efficacy in combating pathogenic bacteria, especially Gram-negative strains, due to synergistic effects of multicomponents on interactions with bacterial cells. In vitro and in vivo cytotoxicity and hemolysis evaluation indicated that these multifunctional copolymers did not induce cell death by apoptosis, as well as did not alter the phenotypes of immune cells and did not show observable toxic effect on red blood cells.
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Affiliation(s)
- Peng Yang
- Department of Chemistry
and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Marpe Bam
- Department
of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, 6311 Garners Ferry Road, Columbia, South Carolina 29209, United States
| | - Parasmani Pageni
- Department of Chemistry
and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Tianyu Zhu
- Department of Chemistry
and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Yung Pin Chen
- Department
of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia, South Carolina 29208, United States
| | - Mitzi Nagarkatti
- Department
of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, 6311 Garners Ferry Road, Columbia, South Carolina 29209, United States
| | - Alan W. Decho
- Department
of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia, South Carolina 29208, United States
| | - Chuanbing Tang
- Department of Chemistry
and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
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270
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Perevyazko I, Trützschler AK, Gubarev A, Lebedeva E, Traeger A, Schubert US, Tsvetkov N. Molecular and structural analysis via hydrodynamic methods: Cationic poly(2-aminoethyl-methacrylate)s. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.10.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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271
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Huang G, Li F, Zhao X, Ma Y, Li Y, Lin M, Jin G, Lu TJ, Genin GM, Xu F. Functional and Biomimetic Materials for Engineering of the Three-Dimensional Cell Microenvironment. Chem Rev 2017; 117:12764-12850. [PMID: 28991456 PMCID: PMC6494624 DOI: 10.1021/acs.chemrev.7b00094] [Citation(s) in RCA: 457] [Impact Index Per Article: 65.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The cell microenvironment has emerged as a key determinant of cell behavior and function in development, physiology, and pathophysiology. The extracellular matrix (ECM) within the cell microenvironment serves not only as a structural foundation for cells but also as a source of three-dimensional (3D) biochemical and biophysical cues that trigger and regulate cell behaviors. Increasing evidence suggests that the 3D character of the microenvironment is required for development of many critical cell responses observed in vivo, fueling a surge in the development of functional and biomimetic materials for engineering the 3D cell microenvironment. Progress in the design of such materials has improved control of cell behaviors in 3D and advanced the fields of tissue regeneration, in vitro tissue models, large-scale cell differentiation, immunotherapy, and gene therapy. However, the field is still in its infancy, and discoveries about the nature of cell-microenvironment interactions continue to overturn much early progress in the field. Key challenges continue to be dissecting the roles of chemistry, structure, mechanics, and electrophysiology in the cell microenvironment, and understanding and harnessing the roles of periodicity and drift in these factors. This review encapsulates where recent advances appear to leave the ever-shifting state of the art, and it highlights areas in which substantial potential and uncertainty remain.
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Affiliation(s)
- Guoyou Huang
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Fei Li
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
- Department of Chemistry, School of Science,
Xi’an Jiaotong University, Xi’an 710049, People’s Republic
of China
| | - Xin Zhao
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
- Interdisciplinary Division of Biomedical
Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong,
People’s Republic of China
| | - Yufei Ma
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Yuhui Li
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Min Lin
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Guorui Jin
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Tian Jian Lu
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
- MOE Key Laboratory for Multifunctional Materials
and Structures, Xi’an Jiaotong University, Xi’an 710049,
People’s Republic of China
| | - Guy M. Genin
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
- Department of Mechanical Engineering &
Materials Science, Washington University in St. Louis, St. Louis 63130, MO,
USA
- NSF Science and Technology Center for
Engineering MechanoBiology, Washington University in St. Louis, St. Louis 63130,
MO, USA
| | - Feng Xu
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
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272
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Non-enzymatic nitric oxide release from biodegradable S-nitrosothiol bound polymer: synthesis, characterization, and antibacterial effect. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-2199-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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273
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Charoongchit P, Suksiriworapong J, Mao S, Sapin-Minet A, Maincent P, Junyaprasert VB. Investigation of cationized triblock and diblock poly(ε-caprolactone)-co-poly(ethylene glycol) copolymers for oral delivery of enoxaparin: In vitro approach. Acta Biomater 2017; 61:180-192. [PMID: 28782723 DOI: 10.1016/j.actbio.2017.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 08/01/2017] [Accepted: 08/03/2017] [Indexed: 12/17/2022]
Abstract
In this study, poly(ε-caprolactone)-co-poly(ethylene glycol) copolymers grafted with a cationic ligand, propargyltrimethyl ammonium iodide (PTA), to fabricate the cationized triblock (P(CatCLCL)2-PEG) and diblock (P(CatCLCL)-mPEG) copolymers were investigated their potential use for oral delivery of enoxaparin (ENX). Influences of various PTA contents and different structures of the copolymers on molecular characteristics, ENX encapsulation, particle characteristics, and capability of drug transport across Caco-2 cells were elucidated. The results showed that P(CatCLCL)2-PEG and P(CatCLCL)-mPEG copolymers self-aggregated and encapsulated ENX into spherical particles of ∼200-450nm. The increasing amount of PTA on the copolymers increased encapsulation efficiency of over 90%. The ENX release from both types of the cationized copolymer particles was pH-dependent which was retarded at pH 1.2 and accelerated at pH 7.4, supporting the drug protection in the acidic environment and possible release in the blood circulation. The toxicity of ENX-loaded particles on Caco-2 cells decreased when decreasing the amount of PTA. The triblock and diblock particles dramatically enhanced ENX uptake and transport across Caco-2 cells as compared to the ENX solution. However, the different structures of the copolymers slightly affected ENX transport. These results suggested that P(CatCLCL)2-PEG and P(CatCLCL)-mPEG copolymers would be potential carriers for oral delivery of ENX. STATEMENT OF SIGNIFICANCE The anionic drugs such as proteins, peptides or polysaccharides are generally administered via invasive route causing patient incompliance and high cost of hospitalization. The development of biomaterials for non-invasive delivery of those drugs has gained much attention, especially for oral delivery. However, they have limitation due to non-biocompatibility and poor drug bioavailability. In this study, the novel poly(ε-caprolactone)-co-poly(ethylene glycol) copolymers grafted with propargyltrimethyl ammonium iodide, a small cationic ligand, were introduced to use as a carrier for oral delivery of enoxaparin, a highly negatively charged drug. The study showed that these cationized copolymers could achieve high enoxaparin entrapment efficiency, protect drug release in an acidic environment and enhance enoxaparin permeability across Caco-2 cells, the intestinal cell model. These characteristics of the cationized copolymers make them a potential candidate for oral delivery of anionic drugs for biomaterial applications.
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Affiliation(s)
- Pimchanok Charoongchit
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand.
| | - Jiraphong Suksiriworapong
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand; Center of Excellence in Innovative Drug Delivery and Nanomedicine, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand.
| | - Shirui Mao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Anne Sapin-Minet
- CITHEFOR EA3452 "Drug targets, formulation and preclinical assessment", Faculté de Pharmacie, Université de Lorraine, Nancy 54001, France.
| | - Philippe Maincent
- CITHEFOR EA3452 "Drug targets, formulation and preclinical assessment", Faculté de Pharmacie, Université de Lorraine, Nancy 54001, France.
| | - Varaporn Buraphacheep Junyaprasert
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand; Center of Excellence in Innovative Drug Delivery and Nanomedicine, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand.
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274
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microRNAs as cancer therapeutics: A step closer to clinical application. Cancer Lett 2017; 407:113-122. [DOI: 10.1016/j.canlet.2017.04.007] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 03/31/2017] [Accepted: 04/05/2017] [Indexed: 12/12/2022]
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275
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Bakaic E, Smeets NMB, Barrigar O, Alsop R, Rheinstädter MC, Hoare T. pH-Ionizable in Situ Gelling Poly(oligo ethylene glycol methacrylate)-Based Hydrogels: The Role of Internal Network Structures in Controlling Macroscopic Properties. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01505] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emilia Bakaic
- Department
of Chemical Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Niels M. B. Smeets
- Department
of Chemical Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Owen Barrigar
- Department
of Chemical Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Richard Alsop
- Department
of Chemical Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Maikel C. Rheinstädter
- Department
of Chemical Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Todd Hoare
- Department
of Chemical Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4L8
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276
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Bakaic E, Smeets NMB, Badv M, Dodd M, Barrigar O, Siebers E, Lawlor M, Sheardown H, Hoare T. Injectable and Degradable Poly(Oligoethylene glycol methacrylate) Hydrogels with Tunable Charge Densities as Adhesive Peptide-Free Cell Scaffolds. ACS Biomater Sci Eng 2017; 4:3713-3725. [PMID: 33429602 DOI: 10.1021/acsbiomaterials.7b00397] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Injectable, dual-responsive, and degradable poly(oligo ethylene glycol methacrylate) (POEGMA) hydrogels are demonstrated to offer potential for cell delivery. Charged groups were incorporated into hydrazide and aldehyde-functionalized thermoresponsive POEGMA gel precursor polymers via the copolymerization of N,N'-dimethylaminoethyl methacrylate (DMAEMA) or acrylic acid (AA) to create dual-temperature/pH-responsive in situ gelling hydrogels that can be injected via narrow gauge needles. The incorporation of charge significantly broadens the swelling, degradation, and rheological profiles achievable with injectable POEGMA hydrogels without significantly increasing nonspecific protein adsorption or chronic inflammatory responses following in vivo subcutaneous injection. However, significantly different cell responses are observed upon charge incorporation, with charged gels significantly improving 3T3 mouse fibroblast cell adhesion in 2D and successfully delivering viable and proliferating ARPE-19 human retinal epithelial cells via an "all-synthetic" matrix that does not require the incorporation of cell-adhesive peptides.
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Affiliation(s)
| | | | | | | | | | - Emily Siebers
- Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin 53226, United States
| | - Michael Lawlor
- Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin 53226, United States
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277
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Long-acting and broad-spectrum antimicrobial electrospun poly (ε-caprolactone)/gelatin micro/nanofibers for wound dressing. J Colloid Interface Sci 2017; 509:275-284. [PMID: 28915485 DOI: 10.1016/j.jcis.2017.08.092] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/24/2017] [Accepted: 08/29/2017] [Indexed: 12/19/2022]
Abstract
Trimethoxysilylpropyl octadecyldimethyl ammonium chloride (QAS), which forms facile bonds with hydroxyl groups, acts asa cationic antibacterial agent. In this work, QAS was introduced into a polycaprolactone (PCL)/gelatin hybrid in increasing concentrations to fabricate a long-acting and broad-spectrum antimicrobial micro/nanofiber membrane as a novel wound dressing. The physical interactions and chemical bonding between QAS/PCL and QAS/gelatin were demonstrated by infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS. Measured water contact angle between the PCL-gelatin/QAS (PG-Q) nanofiber membranes suggested a hydrophobic surface, which has been shown to aid in removal of wound dressings. The mechanical strength of the membranes was sufficient to meet the clinical requirements. Furthermore, the 15% QAS (PG-Q15) and 20% QAS (PG-Q20) formulated nanofiber membranes showed a considerable increase in their bacteriostatic activity towards Staphylococcus aureus (gram-positive) and Pseudomonas aeruginosa (gram-negative) bacteria, suggesting a broad-spectrum bactericidal effect by the PG-Q membranes. The PG-Q membranes with various QAS formulations demonstrated little cytotoxicity. Therefore, the long-acting and broad-spectrum antimicrobial electrospun PG-Q micro/nanofibers membrane demonstrate potential efficacy asan antibacterial wound dressing.
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278
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Chanphai P, Bekale L, Sanyakamdhorn S, Agudelo D, Bérubé G, Thomas T, Tajmir-Riahi H. PAMAM dendrimers in drug delivery: loading efficacy and polymer morphology. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The binding efficacy of anticancer drugs doxorubicin and tamoxifen with polyamidoamine (PAMAM-G4) dendrimers was studied in aqueous solution at physiological pH. The results of multiple spectroscopic methods, transmission electron microscopy (TEM), and molecular modeling of conjugated drug–polymer were examined. Structural analysis showed that drug–polymer conjugation occurs mainly via H-bonding and hydrophilic and hydrophobic contacts. Doxorubicin forms a more stable conjugate with PAMAM-G4 than tamoxifen. The drug loading efficacy was 40%–50%. The TEM images showed major changes in the PAMAM morphology upon drug encapsulation. Modeling showed that drug is located in the polymer surface and in the internal cavities. PAMAM nanoparticles are capable of transporting doxorubicin and tamoxifen in vitro. This minireview presents the most recent work performed with the dendrimers demonstrating their usefulness for drug delivery in cancer therapy.
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Affiliation(s)
- P. Chanphai
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, C. P. 500, Trois-Rivières, QC G9A 5H7, Canada
| | - L. Bekale
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, C. P. 500, Trois-Rivières, QC G9A 5H7, Canada
| | - S. Sanyakamdhorn
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, C. P. 500, Trois-Rivières, QC G9A 5H7, Canada
| | - D. Agudelo
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, C. P. 500, Trois-Rivières, QC G9A 5H7, Canada
| | - G. Bérubé
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, C. P. 500, Trois-Rivières, QC G9A 5H7, Canada
| | - T.J. Thomas
- Department of Medicine, Rutgers Robert Wood Johnson Medical School, and Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901, USA
| | - H.A. Tajmir-Riahi
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, C. P. 500, Trois-Rivières, QC G9A 5H7, Canada
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279
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Wen H, Yu Q, Yin Y, Pan W, Yang S, Liang D. Shear Effects on Stability of DNA Complexes in the Presence of Serum. Biomacromolecules 2017; 18:3252-3259. [DOI: 10.1021/acs.biomac.7b00900] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hao Wen
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Qiuhong Yu
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Yudan Yin
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Wei Pan
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Shuang Yang
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Dehai Liang
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
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280
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Wang P, Chen S, Cao Z, Wang G. NIR Light-, Temperature-, pH-, and Redox-Responsive Polymer-Modified Reduced Graphene Oxide/Mesoporous Silica Sandwich-Like Nanocomposites for Controlled Release. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29055-29062. [PMID: 28795557 DOI: 10.1021/acsami.7b07468] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Here a novel quadruple-responsive nanocarrier based on reduced graphene oxide/mesoporous silica sandwich-like nanocomposites (rGO@MS) modified by pH- and temperature-responsive poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) with a linker of disulfide was constructed via surface-initiated atom transfer radical polymerization. The polymer chains would be used as gatekeepers to control the release of the loaded cargo molecules under pH, temperature, NIR light and redox stimuli. The cargo molecules (rhodamine B) were demonstrated to release from the polymer-modified nanocomposites triggered by the quadruple-stimuli. It is noted that the release of the loaded rhodamine B from the nanocarriers could be enhanced greatly under the synergistic effect of multiple stimuli. The prepared quadruple-responsive polymer-modified nanocomposites show a bright prospect in the field of smart nanocarriers for controlled release.
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Affiliation(s)
- Panjun Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Shuo Chen
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Ziquan Cao
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Guojie Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
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281
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Freyer JL, Brucks SD, Campos LM. Fully charged: Maximizing the potential of cationic polyelectrolytes in applications ranging from membranes to gene delivery through rational design. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28711] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Jessica L. Freyer
- Department of ChemistryColumbia University3000 BroadwayNew York NY10027 USA
| | - Spencer D. Brucks
- Department of ChemistryColumbia University3000 BroadwayNew York NY10027 USA
| | - Luis M. Campos
- Department of ChemistryColumbia University3000 BroadwayNew York NY10027 USA
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282
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Azizullah, Haider A, Kortz U, Joshi SA, Iqbal J. Polyethyleneimine-Polyoxometalate-Based Supramolecular Self-assembled pH-Responsive Hydrogels: Formulation and in vitro Evaluation. ChemistrySelect 2017. [DOI: 10.1002/slct.201701003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Azizullah
- Centre for Advanced Drug Research; department of Pharmacy; COMSATS Institute of Information Technology; Abbottabad- 22060 Pakistan
| | - Ali Haider
- Department of Life Sciences and Chemistry; Jacobs University; P.O. Box 750561 28725 Bremen Germany
- Department of Chemistry, Q; uaid-i-Azam University; 45320- Islamabad Pakistan
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry; Jacobs University; P.O. Box 750561 28725 Bremen Germany
| | - Sachin A. Joshi
- Dr. K. C. Patel Research and Development Centre; Charotar University of Science and Technology (CHARUSAT), Dist. Anand; 388421 Gujarat India
| | - Jamshed Iqbal
- Centre for Advanced Drug Research; department of Pharmacy; COMSATS Institute of Information Technology; Abbottabad- 22060 Pakistan
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283
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Feng G, Zhang Z, Dang M, Zhang X, Doleyres Y, Song Y, Chen D, Ma PX. Injectable nanofibrous spongy microspheres for NR4A1 plasmid DNA transfection to reverse fibrotic degeneration and support disc regeneration. Biomaterials 2017; 131:86-97. [PMID: 28376367 PMCID: PMC5448136 DOI: 10.1016/j.biomaterials.2017.03.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/17/2017] [Accepted: 03/20/2017] [Indexed: 02/06/2023]
Abstract
Safe and efficient gene therapy is highly desired for controlling pathogenic fibrosis of nucleus pulposus (NP) tissue, which would result in intervertebral disc (IVD) degeneration and disability if left untreated. In this work, a hyperbranched polymer (HP) with high plasmid DNA (pDNA) binding affinity and negligible cytotoxicity is synthesized, which can self-assemble into nano-sized polyplexes with a "double shell" structure that can transfect pDNA into NP cells with very high efficiency. These polyplexes are then encapsulated in biodegradable nanospheres (NS) to enable two-stage delivery: 1) temporally-controlled release of pDNA-carrying polyplexes and 2) highly efficient delivery of pDNA into cells by the released polyplexes. These biodegradable NS are co-injected with nanofibrous spongy microspheres (NF-SMS) to localize the cellular transfection of the pDNA encoding orphan nuclear receptor 4A1 (NR4A1), which was recently reported as a therapeutic agent to delay pathogenic fibrosis. It is shown that HP can transfect human NP cells efficiently in vitro with low cytotoxicity. The two-stage delivery system is able to present the polyplexes over a sustained time period (more than 30 days) in the tail of a rat. The NR4A1 pDNA carried by the HP polyplexes is found to therapeutically reduce the pathogenic fibrosis of NP tissue in a rat-tail degeneration model. In conclusion, the combination of the two-stage NR4A1 pDNA delivery NS and NF-SMS is able to repress fibrosis and to support IVD regeneration.
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Affiliation(s)
- Ganjun Feng
- Department of Biologic and Materials Science, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Zhanpeng Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ming Dang
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Xiaojin Zhang
- Department of Biologic and Materials Science, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yasmine Doleyres
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yueming Song
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Di Chen
- Department of Biochemistry, Rush University, Chicago, IL, 60612, USA
| | - Peter X Ma
- Department of Biologic and Materials Science, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA; Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.
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284
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285
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Chanphai P, Tajmir-Riahi H. Characterization of folic acid-PAMAM conjugates: drug loading efficacy and dendrimer morphology. J Biomol Struct Dyn 2017; 36:1918-1924. [DOI: 10.1080/07391102.2017.1341339] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- P. Chanphai
- Department of Chemistry-Biochemistry and Physics, University of Québec at Trois-Rivières , C. P. 500, Trois-Rivières, Quebec G9A 5H7, Canada
| | - H.A. Tajmir-Riahi
- Department of Chemistry-Biochemistry and Physics, University of Québec at Trois-Rivières , C. P. 500, Trois-Rivières, Quebec G9A 5H7, Canada
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286
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Follit CA, Woodruff SR, Vogel PD, Wise JG, Tsarevsky NV. Cationic branched polymers for cellular delivery of negatively charged cargo. J Drug Deliv Sci Technol 2017; 39:324-333. [PMID: 29503667 PMCID: PMC5830148 DOI: 10.1016/j.jddst.2017.04.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Receptor-independent cellular uptake of small molecule therapeutics is limited by their physical interaction with the negatively charged surface of cellular membranes. Passive diffusion through the hydrophobic membrane bilayer follows this process. Unless specific carriers exist in the biological membrane, such interactions limit therapeutics to those that are hydrophobic with modest positive charge at physiological pH. Small negatively charged molecules are therefore not efficient as therapeutics. To enable delivery of such molecules into eukaryotic cells, cationic branched polymers with tetraalkylammonium pendant groups were synthesized by copolymerization of a functional monomer (glycidyl methacrylate) with degradable and non-degradable divinyl crosslinkers in the presence of an efficient chain transfer agent, CBr4, followed by reaction of the multiple pendant epoxide groups and most of the alkyl bromide chain ends with amines. Cationic branched polymers with covalently attached fluorescent labels entered human cancerous and non-cancerous cells. The non-labeled analogues were able to carry anionic cargo (carboxyfluorescein) into the cells, while no uptake was observed in the absence of the cationic carriers. Most of the polymers were not significantly toxic at the concentrations used. This pilot study showed that cellular uptake of anionic small molecules can be promoted even in the absence of natural uptake mechanisms.
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Affiliation(s)
- Courtney A. Follit
- Department of Biological Sciences, Design and Delivery, Southern Methodist University, Dallas, TX 75275
- Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, TX 75275
| | - Shannon R. Woodruff
- Department of Chemistry, Design and Delivery, Southern Methodist University, Dallas, TX 75275
- Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, TX 75275
| | - Pia D. Vogel
- Department of Biological Sciences, Design and Delivery, Southern Methodist University, Dallas, TX 75275
- Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, TX 75275
| | - John G. Wise
- Department of Biological Sciences, Design and Delivery, Southern Methodist University, Dallas, TX 75275
- Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, TX 75275
| | - Nicolay V. Tsarevsky
- Department of Chemistry, Design and Delivery, Southern Methodist University, Dallas, TX 75275
- Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, TX 75275
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287
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Zhang T, Guo W, Zhang C, Yu J, Xu J, Li S, Tian JH, Wang PC, Xing JF, Liang XJ. Transferrin-Dressed Virus-like Ternary Nanoparticles with Aggregation-Induced Emission for Targeted Delivery and Rapid Cytosolic Release of siRNA. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16006-16014. [PMID: 28447465 PMCID: PMC5545884 DOI: 10.1021/acsami.7b03402] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Viruses have evolved to be outstandingly efficient at gene delivery, but their use as vectors is limited by safety risks. Inspired by the structure of viruses, we constructed a virus-mimicking vector (denoted as TR4@siRNA@Tf NCs) with virus-like architecture and infection properties. Composed of a hydrophilic peptide, an aggregation-induced emission (AIE) luminogen, and a lipophilic tail, TR4 imitates the viral capsid and endows the vector with AIE properties as well as efficient siRNA compaction. The outer glycoprotein transferrin (Tf) mimics the viral envelope protein and endows the vector with reduced cytotoxicity as well as enhanced targeting capability. Because of the strong interaction between Tf and transferrin receptors on the cell surface, the Tf coating can accelerate the intracellular release of siRNA into the cytosol. Tf and TR4 are eventually cycled back to the cell membrane. Our results confirmed that the constructed siRNA@TR4@Tf NCs show a high siRNA silencing efficiency of 85% with significantly reduced cytotoxicity. These NCs have comparable transfection ability to natural viruses while avoiding the toxicity issues associated with typical nonviral vectors. Therefore, this proposed virus-like siRNA vector, which integrates the advantages of both viral and nonviral vectors, should find many potential applications in gene therapy.
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Affiliation(s)
- Tingbin Zhang
- School of Chemical Engineering and Technology, Tianjin University, No. 135 Yaguan Road, Haihe Education Park, Jinnan District, Tianjin 300350, China
| | - Weisheng Guo
- CAS Center for Excellence in Nanoscience, Chinese Academy of Sciences, CAS Key Laboratory for Biological Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunqiu Zhang
- CAS Center for Excellence in Nanoscience, Chinese Academy of Sciences, CAS Key Laboratory for Biological Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Yu
- College of Materials Science and Engineering, Zhejiang University of Technology, No. 18 Chaowang Road, Hangzhou 310014, China
| | - Jing Xu
- CAS Center for Excellence in Nanoscience, Chinese Academy of Sciences, CAS Key Laboratory for Biological Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuyi Li
- CAS Center for Excellence in Nanoscience, Chinese Academy of Sciences, CAS Key Laboratory for Biological Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian-Hua Tian
- School of Chemical Engineering and Technology, Tianjin University, No. 135 Yaguan Road, Haihe Education Park, Jinnan District, Tianjin 300350, China
| | - Paul C. Wang
- Laboratory of Molecular Imaging, Department of Radiology, Howard University, Washington, D.C. 20060, United States
- College of Science and Engineering, Fu Jen Catholic University, Taipei 24205, Taiwan
| | - Jin-Feng Xing
- School of Chemical Engineering and Technology, Tianjin University, No. 135 Yaguan Road, Haihe Education Park, Jinnan District, Tianjin 300350, China
| | - Xing-Jie Liang
- CAS Center for Excellence in Nanoscience, Chinese Academy of Sciences, CAS Key Laboratory for Biological Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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288
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Manojkumar Y, Ambika S, Senthilkumar R, Arunachalam S. Biophysical and biological studies of some polymer grafted metallo-intercalators. Colloids Surf B Biointerfaces 2017; 156:320-329. [PMID: 28544964 DOI: 10.1016/j.colsurfb.2017.05.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 05/08/2017] [Accepted: 05/13/2017] [Indexed: 12/21/2022]
Abstract
Two water-soluble polymer-copper(II) complexes, [Cu(ip)2(BPEI)](ClO4)2·H2O (Complex 1) and [Cu(dppz)2BPEI](ClO4)2·H2O (Complex 2) with different degree of coordination have been synthesized and characterized. The interaction between the prepared complexes and CTDNA has been assessed by various physico-chemical methods The spectroscopic and the cyclic voltammetry studies have revealed that both the complexes interact with CTDNA through intercalation binding mode. Among the two complexes, Complex 2 has higher binding affinity with CTDNA. The antiproliferative activity of the complexes has been examined on human breast cancer cells, MDAMB231, adopting various techniques. The results indicate that both the polymer-copper(II) complexes are effective against the breast cancer cell line and the order of the activity is consistent with the DNA-binding ability.
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Affiliation(s)
- Yesaiyan Manojkumar
- School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, India
| | - Subramanian Ambika
- School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, India
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289
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A smart gene delivery platform: Cationic oligomer. Eur J Pharm Sci 2017; 105:33-40. [PMID: 28478134 DOI: 10.1016/j.ejps.2017.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/17/2017] [Accepted: 05/02/2017] [Indexed: 02/04/2023]
Abstract
Low transfection efficiency and high cytotoxicity of polymeric gene carriers have hampered the application of numerous polycations for gene therapy. To overcome this barrier, a cationic glycoconjugate of kanamycin and di(ethylene glycol) diacrylate was prepared via a facile approach. Nuclear magnetic resonance, Fourier transform infrared spectroscopy, and size exclusion chromatography were employed to investigate the resulting materials. Agarose gel electrophoresis, atomic force microscopy, and circular dichroism spectroscopy were used to record the interaction of the cationic oligomer and plasmid DNA. Finally, the cytotoxicity and transfection efficiency were evaluated by using COS-7 cells. The results indicated that cationic oligomers had been obtained and plasmid DNA was condensed into nanocomplexes, with a high transfection efficiency of the oligomer and a low toxicity in COS-7 cell line. It provided a novel perspective to develop gene carrier, with better safety and greater transfection efficiency, compared to traditional high molecular weight polymers.
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290
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Chanphai P, Tajmir-Riahi H. Encapsulation of testosterone by chitosan nanoparticles. Int J Biol Macromol 2017; 98:535-541. [DOI: 10.1016/j.ijbiomac.2017.02.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 01/22/2017] [Accepted: 02/01/2017] [Indexed: 02/06/2023]
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291
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Laaser JE, McGovern M, Jiang Y, Lohmann E, Reineke TM, Morse DC, Dorfman KD, Lodge TP. Equilibration of Micelle-Polyelectrolyte Complexes: Mechanistic Differences between Static and Annealed Charge Distributions. J Phys Chem B 2017; 121:4631-4641. [PMID: 28441017 DOI: 10.1021/acs.jpcb.7b01953] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The role of charge density and charge annealing in polyelectrolyte complexation was investigated through systematic comparison of two micelle-polyelectrolyte systems. First, poly(dimethylaminoethyl methacrylate)-block-poly(styrene) (PDMAEMA-b-PS) micelles were complexed with poly(styrenesulfonate) (PSS) at pH values above and below the pKa of PDMAEMA to investigate the role of charge annealing in the complexation process. Second, complexes of poly(DMAEMA-stat-oligo(ethylene glycol) methyl ether methacrylate)-block-poly(styrene) (P(DMAEMA-stat-OEGMA)-b-PS) micelles with the same PSS at low pH were used to investigate how the complexation process differs when the charged sites are in fixed positions along the polymer chains. Characterization by turbidimetric titration, dynamic light scattering, and cryogenic transmission electron microscopy reveals that whether or not the charge distribution can rearrange during the complexation process significantly affects the structure and stability of the complexes. In complexes of PDMAEMA-b-PS micelles at elevated pH, in which the charge distributions can anneal, the charge sites redistribute along the corona chains upon complexation to favor more fully ion-paired configurations. This promotes rapid rearrangement to single-micelle species when the micelles are in excess but traps complexes formed with PSS in excess. In complexes with static charge distributions introduced by copolymerization of DMAEMA with neutral OEGMA monomers, on the other hand, the opposite is true: in this case, reducing the charge density promotes rearrangement to single-micelle complexes only when the polyanion is in excess. Molecular dynamics simulations show that disruption of the charge density in the corona brush reduces the barrier to rearrangement of individual ion pairs, suggesting that the inability of the brush to rearrange to form fully ion-paired complexes fundamentally alters the kinetics of complex formation and equilibration.
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Affiliation(s)
- Jennifer E Laaser
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Michael McGovern
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Yaming Jiang
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Elise Lohmann
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Theresa M Reineke
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - David C Morse
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Kevin D Dorfman
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Timothy P Lodge
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
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292
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Liu S, Edgar KJ. Water-soluble co-polyelectrolytes by selective modification of cellulose esters. Carbohydr Polym 2017; 162:1-9. [DOI: 10.1016/j.carbpol.2017.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/28/2016] [Accepted: 01/04/2017] [Indexed: 12/20/2022]
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293
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Castan L, José da Silva C, Ferreira Molina E, Alves Dos Santos R. Comparative study of cytotoxicity and genotoxicity of commercial Jeffamines® and polyethylenimine in CHO-K1 cells. J Biomed Mater Res B Appl Biomater 2017; 106:742-750. [PMID: 28334507 DOI: 10.1002/jbm.b.33882] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 02/19/2017] [Accepted: 02/28/2017] [Indexed: 01/06/2023]
Abstract
Jeffamines® are a family of polymers containing primary amine groups attached to the extremities of polyether backbone which can be used as biomaterials. They have been used in combination with polyethylenimine (PEI) to improve biocompatibility in drug and gene delivery systems. Despite these facts, very few studies have been done on cytotoxicity and genotoxicity of pure Jeffamines® or compared with PEI. The present study aimed to evaluate and compare the cytotoxic and genotoxic effects of Jeffamines® and PEI in CHO-K1 cells. Specifically, polypropylene oxide 2000 (PPO 2000, Jeffamine® D series), polyethylene oxide 1900 (PEO 1900, Jeffamine® ED series), branched 25 kDa PEI, and linear 20 kDa PEI were evaluated at different concentrations. Cell viability and proliferation were assessed by 2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) and 5-bromo-2'-deoxyuridine (BrdU) assays, respectively. Genotoxicity was evaluated using single cell gel electrophoresis assay and the cytokinesis-blocked micronucleus assay. PPO 2000 was the most cytotoxic Jeffamine® , whereas PEO 1900 did not caused significant cell death at any tested concentration. Branched PEI was more cytotoxic than linear PEI (LPEI) and both were more cytotoxic than Jeffamines® . Only PPO 2000 induced DNA damage when evaluated in comet assay probably due to its cytotoxicity. PPO 2000, PEO 1900, and PEI did not increase the frequency of micronuclei when tested at sub-cytotoxic concentrations. This work provides new insights about biocompatibility of Jeffamines® and PEI and suggests the genotoxicological safety for further investigations of PEO 1900 in drug and gene delivery systems. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 742-750, 2018.
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Affiliation(s)
- Leniher Castan
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Cristiano José da Silva
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Eduardo Ferreira Molina
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Raquel Alves Dos Santos
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
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294
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Park NH, Voo ZX, Yang YY, Hedrick JL. Convergent Approach to Boronic Acid Functionalized Polycarbonates: Accessing New Dynamic Material Platforms. ACS Macro Lett 2017; 6:252-256. [PMID: 35650922 DOI: 10.1021/acsmacrolett.6b00875] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polycarbonates are routinely utilized for diverse medicinal applications and are highly efficacious scaffolds for drug delivery and antimicrobial treatments. In order to provide for robust, dynamic platforms for biomedical applications, we have developed new routes for the incorporation of boronic acids into the polycarbonate backbone. These routes take advantage of straightforward postsynthesis modification of established polycarbonate backbones, enabling the preparation of a diverse array of boronic acid functionalized polycarbonates from readily accessible polycarbonates. In particular, this approach circumvents the need for de novo monomer synthesis, functional group incompatibilities, and deprotection steps that often limit other methods. This strategy has been demonstrated using a broad array of unprotected boronic acids to produce both neutral and cationic boronic acid functionalized polycarbonates.
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Affiliation(s)
- Nathaniel H. Park
- IBM Almaden Research
Center, 650 Harry Road, San Jose, California 95120, United States
| | - Zhi Xiang Voo
- Institute of Bioengineering
and Nanotechnology, 31 Biopolis Way,
The Nanos, Singapore 138669
| | - Yi Yan Yang
- Institute of Bioengineering
and Nanotechnology, 31 Biopolis Way,
The Nanos, Singapore 138669
| | - James L. Hedrick
- IBM Almaden Research
Center, 650 Harry Road, San Jose, California 95120, United States
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295
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Charoongchit P, Suksiriworapong J, Sripha K, Mao S, Sapin-Minet A, Maincent P, Junyaprasert VB. Self-aggregation of cationically modified poly( ε -caprolactone) 2 - co -poly(ethylene glycol) copolymers: Effect of cationic grafting ligand and poly( ε -caprolactone) chain length. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 72:444-455. [DOI: 10.1016/j.msec.2016.11.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/09/2016] [Accepted: 11/13/2016] [Indexed: 11/29/2022]
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296
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Brucks SD, Freyer JL, Lambert TH, Campos LM. Influence of Substituent Chain Branching on the Transfection Efficacy of Cyclopropenium-Based Polymers. Polymers (Basel) 2017; 9:E79. [PMID: 30970759 PMCID: PMC6431972 DOI: 10.3390/polym9030079] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/13/2017] [Accepted: 02/21/2017] [Indexed: 12/22/2022] Open
Abstract
The realization of gene therapy relies on the development of delivery vectors with high efficiency and biocompatibility. With a multitude of structures accessible, the core challenge is precisely tuning vector structure to probe and optimize structure⁻property relationships. Employing a modular strategy, two pairs of cationic polymers based on the trisaminocyclopropenium (TAC) ion were synthesized where the substituents differ in the degree of alkyl chain branching. All TAC-based polymers exhibited higher transfection efficiencies than the untreated controls, with variable in vitro toxicities. Considering both cytotoxicity and transfection efficacy, an optimal nonviral vector was identified. Our studies highlight the importance of exercising precise control over polymer structure, both in terms of backbone identity and substituent nature, and the necessity of a robust, modular platform from which to study them.
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Affiliation(s)
- Spencer D Brucks
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
| | - Jessica L Freyer
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
| | - Tristan H Lambert
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
| | - Luis M Campos
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
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297
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Hadjizadeh A, Ghasemkhah F, Ghasemzaie N. Polymeric Scaffold Based Gene Delivery Strategies to Improve Angiogenesis in Tissue Engineering: A Review. POLYM REV 2017. [DOI: 10.1080/15583724.2017.1292402] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Afra Hadjizadeh
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Farzaneh Ghasemkhah
- Institute of Nanotechnology, Amirkabir University of Technology, Tehran, Iran
| | - Niloofar Ghasemzaie
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
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298
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Ho HT, Bohec ML, Frémaux J, Piogé S, Casse N, Fontaine L, Pascual S. Tuning the Molar Composition of "Charge-Shifting" Cationic Copolymers Based on 2-(N,N-Dimethylamino)Ethyl Acrylate and 2-(tert-Boc-Amino)Ethyl Acrylate. Macromol Rapid Commun 2017; 38. [PMID: 28045212 DOI: 10.1002/marc.201600641] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 11/14/2016] [Indexed: 12/15/2022]
Abstract
Copolymers of 2-(N,N-dimethylamino)ethyl acrylate (DMAEA) and 2-(tert-Boc-amino)ethyl acrylate (tBocAEA) are synthesized by reversible addition-fragmentation chain transfer polymerization in a controlled manner with defined molar masses and narrow molar masses distributions (Ð ≤ 1.17). Molar compositions of the P(DMAEA-co-tBocAEA) copolymers are assessed by means of 1 H NMR. A complete screening in molar composition is studied from 0% of DMAEA to 100% of DMAEA. Reactivity ratios of both comonomers are determined by the extended Kelen-Tüdos method (r DMAEA = 0.81 and rtBocAEA = 0.99).
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Affiliation(s)
- Hien The Ho
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS - Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex, France
| | - Maël Le Bohec
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS - Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex, France
| | - Julien Frémaux
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS - Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex, France
| | - Sandie Piogé
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS - Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex, France
| | - Nathalie Casse
- Mer, Molécules et Santé, EA 2160 - Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex, France
| | - Laurent Fontaine
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS - Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex, France
| | - Sagrario Pascual
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS - Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex, France
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299
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Wang X, Yun W, Jiang W, Wang D, Zhang L, Tang J. An amphiphilic non-viral gene vector prepared by a combination of enzymatic atom transfer radical polymerization and enzymatic ring-opening polymerization. RSC Adv 2017. [DOI: 10.1039/c6ra28650j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An amphiphilic non-viral gene vector (PCL-b-PGEA) was prepared by a combination of enzymatic ring-opening polymerization and enzymatic atom transfer radical polymerization for the first time and the kinetic features and gene delivery properties were investigated.
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Affiliation(s)
- Xinghuo Wang
- Department of Polymer Science
- Chemistry College
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Wenjing Yun
- Department of Pathophysiology
- Basic Medical College
- Jilin University
- Changchun 130021
- People's Republic of China
| | - Wei Jiang
- Department of Polymer Science
- Chemistry College
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Ding Wang
- Department of Pathophysiology
- Basic Medical College
- Jilin University
- Changchun 130021
- People's Republic of China
| | - Ling Zhang
- Department of Pathophysiology
- Basic Medical College
- Jilin University
- Changchun 130021
- People's Republic of China
| | - Jun Tang
- Department of Polymer Science
- Chemistry College
- Jilin University
- Changchun 130012
- People's Republic of China
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300
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Kumar JN, Pang VYT, Aik SXL. Calcium triggered self-assembly of alginate-graft-POEGMA via RAFT for the encapsulation of lipophillic actives. J Mater Chem B 2017; 5:8254-8263. [DOI: 10.1039/c7tb01670k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Self-assembly of alginate into nanoparticles was realized by grafting hydrophilic brushes via RAFT.
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Affiliation(s)
- Jatin N. Kumar
- Institute of Materials Research & Engineering
- A*STAR (Agency for Science, Technology and Research)
- Singapore 138634
- Singapore
| | - Victoria Y. T. Pang
- Institute of Materials Research & Engineering
- A*STAR (Agency for Science, Technology and Research)
- Singapore 138634
- Singapore
| | - Shalen X. L. Aik
- Institute of Materials Research & Engineering
- A*STAR (Agency for Science, Technology and Research)
- Singapore 138634
- Singapore
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