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Methods of synthesis, characterization and biomedical applications of biodegradable poly(ester amide)s- A review. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109323] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Tajdaran K, Chan K, Gordon T, Borschel GH. Matrices, scaffolds, and carriers for protein and molecule delivery in peripheral nerve regeneration. Exp Neurol 2019; 319:112817. [DOI: 10.1016/j.expneurol.2018.08.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 07/12/2018] [Accepted: 08/29/2018] [Indexed: 01/04/2023]
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Biomaterial-based delivery systems of nucleic acid for regenerative research and regenerative therapy. Regen Ther 2019; 11:123-130. [PMID: 31338391 PMCID: PMC6626072 DOI: 10.1016/j.reth.2019.06.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/10/2019] [Accepted: 06/25/2019] [Indexed: 12/22/2022] Open
Abstract
Regenerative medicine is a new and promising medical method aiming at treating patients with defective or dysfunctional tissues by maintaining or enhancing the biological activity of cells. The development of biomaterial-based technologies, such as cell scaffolds and carriers for drug delivery system, are highly required to promote the regenerative research and regenerative therapy. Nucleic acids are one of the most feasible factors to efficiently modify the biological activity of cells. The effective and stable delivery of nucleic acids into cells is highly required to succeed in the modification. Biomaterials-based non-viral carriers or biological carriers, like exosomes, play an important role in the efficient delivery of nucleic acids. This review introduces the examples of regenerative research and regenerative therapy based on the delivery of nucleic acids with biomaterials technologies and emphasizes their importance to accomplish regenerative medicine. Modifying the activity of cells is important for regenerative medicine. Various nucleic acids regulate gene expression to modify the activity of cells. Intracellular delivery system is vital to the nucleic acids-based modification. Biomaterials are useful for the intracellular delivery of nucleic acids.
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Key Words
- Biomaterials
- CRISPR, clustered regularly interspaced short palindromic repeats
- Cas, CRISPR-associated systems
- Cell scaffold
- DDS, drug delivery system
- Drug delivery system
- ECM, extracellular matrix
- MSC, mesenchymal stem cells
- Nucleic acids
- PEG, polyethylene glycol
- PLGA, poly(d,l-lactic acid-co-glycolic acid)
- RISC, RNA-induced silencing complex
- RNAi, RNA interferince
- Regenerative research
- Regenerative therapy
- TALEN, transcription activator-like effector nuclease
- ZFN, zinc finger nucleases
- lncRNA, long non-coding RNA
- mRNA, messenger RNA
- miRNA, microRNA
- siRNA, small interfering RNA
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Onat B, Tunçer S, Ulusan S, Banerjee S, Erel-Göktepe I. Biodegradable polymer promotes osteogenic differentiation in immortalized and primary osteoblast-like cells. ACTA ACUST UNITED AC 2019; 14:045003. [PMID: 30856612 DOI: 10.1088/1748-605x/ab0e92] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Biodegradable polymers have been broadly used as agents that can complex with and deliver osteoinductive agents, but osteoinductivity of the polymers themselves has been rarely studied. Here we report the osteoinductivity of poly(4-hydroxy-L-proline ester) (PHPE), a biodegradable cationic polymer with cell penetrating properties. Under physiological conditions, PHPE degrades into trans-4-hydroxy-L-proline (trans-Hyp), a non-coded amino acid with essential functions in collagen fibril formation and fibril stability. Treatment of SaOS-2 osteoblast-like cells and hFOB 1.19 primary osteoblast cells with PHPE promoted earlier collagen nodule formation and mineralization of the extracellular matrix compared to untreated cells, even when mineralization activators were absent in the growth medium. Our results indicate that PHPE is a potential osteoinductive agent in vitro that can favor bone regeneration. Moreover, this osteoinductive property could be partly attributed to the degradation product trans-Hyp, which could recapitulate some, but not all of the osteogenic activity. The primary findings of this study can be summarized as follows: treatment of cells with PHPE led to (1) the induction of COL1A1 expression, collagen synthesis and secretion in osteoblast-like cells, (2) mineralization of the ECM in both SaOS-2 and hFOB 1.19 primary osteoblasts, and (3) induction of BMP2 gene and protein expression in osteoblast-like cells, which can promote mineralization of the ECM and regeneration of the bone tissue. Our results suggest that PHPE is a non-cytotoxic polymer and can be potentially used to overcome collagenopathies such as osteogenesis imperfecta.
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Affiliation(s)
- Bora Onat
- Department of Biotechnology, Middle East Technical University, 06800, Cankaya, Ankara, Turkey
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Nelson AM, Pekkanen AM, Forsythe NL, Herlihy JH, Zhang M, Long TE. Synthesis of Water-Soluble Imidazolium Polyesters as Potential Nonviral Gene Delivery Vehicles. Biomacromolecules 2016; 18:68-76. [PMID: 28064498 DOI: 10.1021/acs.biomac.6b01316] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The inherent hydrolytic reactivity of polyesters renders them excellent candidates for a variety of biomedical applications. Incorporating ionic groups further expands their potential impact, encompassing charge-dependent function such as deoxyribonucleic acid (DNA) binding, antibacterial properties, and pH-responsiveness. Catalyst-free and solvent-free polycondensation of a bromomethyl imidazolium-containing (BrMeIm) diol with neopentylglycol (NPG) and adipic acid (AA) afforded novel charged copolyesters with pendant imidazolium sites. Varying ionic content influenced thermal properties and offered a wide-range, -41 to 40 °C, of composition-dependent glass transition temperatures (Tgs). In addition to desirable melt and thermal stability, polyesters with ionic concentrations ≥15 mol % readily dispersed in water, suggesting potential as nonviral gene delivery vectors. An electrophoretic gel shift assay confirmed the novel cationic copolyesters successfully bound DNA at an N/P ratio of 4 for 50 mol % and 75 mol % charged copolyesters (P(NA50-co-ImA50) and P(NA25-co-ImA75)), and an N/P ratio of 5 for 100 mol % Im (PImA). Polyplexes exhibited insignificant cytotoxicity even at high concentrations (200 μg/mL), and a Luciferase transfection assay revealed the ionic (co)polyesters transfected DNA significantly better than the untreated controls. The successful transfection of these novel (co)polyesters inspires future imidazolium-containing polyester design.
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Affiliation(s)
- Ashley M Nelson
- Macromolecules Innovation Institute, Department of Chemistry, Virginia Tech , Blacksburg, Virginia 24061, United States
| | - Allison M Pekkanen
- School of Biomedical Engineering and Science, Virginia Tech , Blacksburg, Virginia 24061, United States
| | - Neil L Forsythe
- Macromolecules Innovation Institute, Department of Chemistry, Virginia Tech , Blacksburg, Virginia 24061, United States
| | - John H Herlihy
- Macromolecules Innovation Institute, Department of Chemistry, Virginia Tech , Blacksburg, Virginia 24061, United States
| | - Musan Zhang
- Macromolecules Innovation Institute, Department of Chemistry, Virginia Tech , Blacksburg, Virginia 24061, United States
| | - Timothy E Long
- Macromolecules Innovation Institute, Department of Chemistry, Virginia Tech , Blacksburg, Virginia 24061, United States
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Mokhtarzadeh A, Alibakhshi A, Yaghoobi H, Hashemi M, Hejazi M, Ramezani M. Recent advances on biocompatible and biodegradable nanoparticles as gene carriers. Expert Opin Biol Ther 2016; 16:771-85. [DOI: 10.1517/14712598.2016.1169269] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Bauri K, Roy SG, De P. Side-Chain Amino-Acid-Derived Cationic Chiral Polymers by Controlled Radical Polymerization. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500271] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kamal Bauri
- Polymer Research Centre; Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata Mohanpur; 741246 Nadia West Bengal India
| | - Saswati Ghosh Roy
- Polymer Research Centre; Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata Mohanpur; 741246 Nadia West Bengal India
| | - Priyadarsi De
- Polymer Research Centre; Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata Mohanpur; 741246 Nadia West Bengal India
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Jo JI, Tabata Y. How controlled release technology can aid gene delivery. Expert Opin Drug Deliv 2015; 12:1689-701. [DOI: 10.1517/17425247.2015.1048221] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Mangiferin loaded magnetic PCEC microspheres: preparation, characterization and antitumor activity studies in vitro. Arch Pharm Res 2014; 44:1-7. [PMID: 25266232 DOI: 10.1007/s12272-014-0485-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 09/15/2014] [Indexed: 01/13/2023]
Abstract
Mangiferin is a promising effective chemopreventive agent against various tumors. However, its clinical use is limited by poor water solubility and low bioavailability. In this article, mangiferin loaded magnetic PCEC microspheres (MG-MS) were designed, characterized and the antitumor activity of MG-MS was evaluated in vitro. The magnetic nanoparticles (MNP) were synthesized via the high-temperature reaction of iron acetylacetonate in phenyl ether in the presence of oleic acid and oleylamine. Poly (ε-caprolactone)-poly (ethyleneglycol)-poly (ε-caprolactone) (PCL-PEG-PCL, PCEC) copolymers were formed by ring-opening copolymerization of ε-CL initiated by PEG-diol using Sn(Oct)2 as a catalyst and MG-MS were prepared by solvent diffusion method. MNP, PCEC copolymer, and MG-MS were characterized by GPC, TEM, XRD, FT-IR, 1H-NMP and Malvern Laser Particle Sizer. Meanwhile, the antiproliferative activity in vitro and in vitro release behavior of this microspheres were studied in detail. The results indicate that the obtained magnetic microspheres might have great potential as an effective carrier for mangiferin used in cancer chemotherapy.
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Fonseca AC, Gil MH, Simões PN. Biodegradable poly(ester amide)s – A remarkable opportunity for the biomedical area: Review on the synthesis, characterization and applications. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2013.11.007] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Preparation of poly(serine ester)s by ring-opening polymerization of N-trityl serine lactone under catalysis of ZnEt2. Chem Res Chin Univ 2013. [DOI: 10.1007/s40242-013-2355-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Shen H, Liu M, Chong Y, Huang J, Zhang Z. Synthesis, protein delivery, and in vitro and in vivo toxicity of a biodegradable poly(aminoester). Toxicol Res (Camb) 2013. [DOI: 10.1039/c3tx50074h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Wei Y, Li X, Jing X, Chen X, Huang Y. Synthesis and characterization of α-amino acid-containing polyester: poly[(ε-caprolactone)-co-(serine lactone)]. POLYM INT 2012. [DOI: 10.1002/pi.4334] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Khan W, Muthupandian S, Farah S, Kumar N, Domb AJ. Biodegradable Polymers Derived From Amino Acids. Macromol Biosci 2011; 11:1625-36. [DOI: 10.1002/mabi.201100324] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 09/11/2011] [Indexed: 01/17/2023]
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Sun H, Meng F, Dias AA, Hendriks M, Feijen J, Zhong Z. α-Amino acid containing degradable polymers as functional biomaterials: rational design, synthetic pathway, and biomedical applications. Biomacromolecules 2011; 12:1937-55. [PMID: 21469742 DOI: 10.1021/bm200043u] [Citation(s) in RCA: 153] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Currently, biomedical engineering is rapidly expanding, especially in the areas of drug delivery, gene transfer, tissue engineering, and regenerative medicine. A prerequisite for further development is the design and synthesis of novel multifunctional biomaterials that are biocompatible and biologically active, are biodegradable with a controlled degradation rate, and have tunable mechanical properties. In the past decades, different types of α-amino acid-containing degradable polymers have been actively developed with the aim to obtain biomimicking functional biomaterials. The use of α-amino acids as building units for degradable polymers may offer several advantages: (i) imparting chemical functionality, such as hydroxyl, amine, carboxyl, and thiol groups, which not only results in improved hydrophilicity and possible interactions with proteins and genes, but also facilitates further modification with bioactive molecules (e.g., drugs or biological cues); (ii) possibly improving materials biological properties, including cell-materials interactions (e.g., cell adhesion, migration) and degradability; (iii) enhancing thermal and mechanical properties; and (iv) providing metabolizable building units/blocks. In this paper, recent developments in the field of α-amino acid-containing degradable polymers are reviewed. First, synthetic approaches to prepare α-amino acid-containing degradable polymers will be discussed. Subsequently, the biomedical applications of these polymers in areas such as drug delivery, gene delivery and tissue engineering will be reviewed. Finally, the future perspectives of α-amino acid-containing degradable polymers will be evaluated.
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Affiliation(s)
- Huanli Sun
- Soochow University, Suzhou, People's Republic of China
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Choubey J, Bajpai AK. Investigation on magnetically controlled delivery of doxorubicin from superparamagnetic nanocarriers of gelatin crosslinked with genipin. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:1573-1586. [PMID: 20135205 DOI: 10.1007/s10856-010-3997-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2009] [Accepted: 01/08/2010] [Indexed: 05/28/2023]
Abstract
Gelatin (Type B) nanoparticles were prepared by a single W/O emulsion technique and characterized by infrared (IR) spectra, transmission electron micrographs (TEM), surface potential measurements and magnetization studies. Whereas the IR spectra clearly confirmed the presence of gelatin, genipin and doxorubicin in the loaded nanoparticles, the transmission electron micrographs (TEM) image depicts smooth surface, spherical shape and non-uniform size of nanoparticles (up to 100 nm). The prepared nanoparticles were loaded with doxorubicin, a well known anticancer drug, and in vitro release dynamics of entrapped drug was investigated as a function of various experimental factors such as percent loading of the drug, chemical architecture of the nanocarriers, and pH, temperature, ionic strength and nature of the release medium in presence and absence of magnetic field. The nanoparticles were also studied for their water sorption capacity. The drug release process was analyzed kinetically using Ficks power law and a correlation was established between the quantity of released drug and swelling of the nanoparticles.
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Affiliation(s)
- Jyoti Choubey
- Bose Memorial Research Laboratory, Department of Chemistry, Government Autonomous Science College, Jabalpur, 482 001, India
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Abstract
Plasmid DNA and siRNA have a large potential for use as therapeutic nucleic acids in medicine. The way to the target cell and its proper compartment is full of obstacles. Polymeric carriers help to overcome the encountered barriers. Cationic polymers can interact with the nucleic acid in a nondamaging way but still require optimization with regard to transfer efficiency and biocompatibility. Aiming at virus-like features, as viruses are the most efficient natural gene carriers, the design of bioresponsive polymers shows promising results regarding DNA and siRNA delivery. By specific chemical modifications dynamic structures are created, programmed to respond towards changing demands on the delivery pathway by cleavage of labile bonds or conformational changes, thus enhancing biocompatible gene delivery.
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Pathak Y, Thassu D, Deleers M. Pharmaceutical Applications of Nanoparticulate Drug-Delivery Systems. ACTA ACUST UNITED AC 2009. [DOI: 10.1201/9781420008449.ch13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Liu M, Chen J, Xue YN, Liu WM, Zhuo RX, Huang SW. Poly(β-aminoester)s with Pendant Primary Amines for Efficient Gene Delivery. Bioconjug Chem 2009; 20:2317-23. [DOI: 10.1021/bc900317m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Min Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
| | - Jun Chen
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
| | - Ya-Nan Xue
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
| | - Wen-Ming Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
| | - Ren-Xi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
| | - Shi-Wen Huang
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
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Avilés MO, Lin CH, Zelivyanskaya M, Graham JG, Boehler RM, Messersmith PB, Shea LD. The contribution of plasmid design and release to in vivo gene expression following delivery from cationic polymer modified scaffolds. Biomaterials 2009; 31:1140-7. [PMID: 19892398 DOI: 10.1016/j.biomaterials.2009.10.035] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Accepted: 10/14/2009] [Indexed: 12/16/2022]
Abstract
Tissue engineering scaffolds capable of gene delivery can provide a structure that supports tissue formation while also inducing the expression of inductive factors. Sustained release strategies are hypothesized to maintain elevated plasmid concentrations locally that can enhance gene transfer. In this report, we investigate the relationship between plasmid release kinetics and the extent and duration of transgene expression. Scaffolds were fabricated from polymer microspheres modified with cationic polymers (polyethylenimine, poly(L-lysine), poly(allylamine hydrochloride), polydiallyldimethylammonium) or polydopamine (PD), with PD enhancing incorporation and slowing release. In vivo implantation of scaffolds into the peritoneal fat pad had no significant changes in the level and duration of transgene expression between PD and unmodified scaffolds. Control studies with plasmid dried onto scaffolds, which exhibited a rapid release, and scaffolds with extended leaching to reduce initial quantities released had similar levels and duration of expression. Changing the plasmid design, from a cytomegalovirus (CMV) to an ubiquitin C (UbC) promoter substantially altered the duration of expression. These studies suggest that the initial dose released and vector design affect the extent and duration of transgene expression, which may be sustained over several weeks, potentially leading to numerous applications in cell transplantation and regenerative medicine.
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Affiliation(s)
- Misael O Avilés
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA
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Zhang Q, Zhao D, Zhang XZ, Cheng SX, Zhuo RX. Calcium phosphate/DNA co-precipitates encapsulated fast-degrading polymer films for substrate-mediated gene delivery. J Biomed Mater Res B Appl Biomater 2009; 91:172-80. [DOI: 10.1002/jbm.b.31387] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Saccardo P, Villaverde A, González-Montalbán N. Peptide-mediated DNA condensation for non-viral gene therapy. Biotechnol Adv 2009; 27:432-8. [DOI: 10.1016/j.biotechadv.2009.03.004] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Revised: 03/19/2009] [Accepted: 03/20/2009] [Indexed: 10/20/2022]
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Yoon CS, Jung HS, Kim TK, Kwon MJ, Kim MK, Lee M, Koh KS, Rhee BD, Park JH. Comparison of the efficiency and toxicity of sonoporation with branched polyethylenimine-mediated gene transfection in various cultured cell lines. J Drug Target 2009; 16:773-9. [PMID: 19005939 DOI: 10.1080/10611860802470549] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE The objective of this study is to evaluate transfection efficiency and safety for gene delivery by sonoporation in comparison with cationic polymer gene carrier branched polyethylenimine (BPEI). METHODS The cDNA expressing VEGF(165) was cloned under chicken beta-actin promoter. The plasmid DNA was transfected into the CHO, HEK293, and NIH3T3 cells using microbubble-based sonoporation and BPEI (25 kDa) under various conditions. Enzyme-linked immunosorbent assay (ELISA) was used to determine the expressed protein level. Cytotoxicities of transfection methods were compared by Cell Counting Kit-8. RESULTS At 1 MHz intensity, transfection efficiency of sonoporation was enhanced by microbubble concentration with no detrimental effects. By contrast, BPEI exacerbated cell viability, despite its high transgene expression efficiency. CONCLUSION Sonoporation gene therapy might be the safest technique to be used in actual clinical practice.
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Affiliation(s)
- Chang S Yoon
- Molecular Therapy Laboratory, Department of Internal Medicine, College of Medicine, Paik Institute for Clinical Research, Inje University, Busan, South Korea
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Li YQ, Li F, Zhang XZ, Cheng SX, Zhuo RX. Three-dimensional fast-degrading polymer films for delivery of calcium phosphate/DNA co-precipitates in solid-phase transfection. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b906003k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
| | - Eric E. Simanek
- Department of Chemistry, Texas A&M University, College Station, Texas 77843
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Rytting E, Nguyen J, Wang X, Kissel T. Biodegradable polymeric nanocarriers for pulmonary drug delivery. Expert Opin Drug Deliv 2008; 5:629-39. [PMID: 18532919 DOI: 10.1517/17425247.5.6.629] [Citation(s) in RCA: 182] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Pulmonary drug delivery is attractive for both local and systemic drug delivery as a non-invasive route that provides a large surface area, thin epithelial barrier, high blood flow and the avoidance of first-pass metabolism. OBJECTIVE Nanoparticles can be designed to have several advantages for controlled and targeted drug delivery, including controlled deposition, sustained release, reduced dosing frequency, as well as an appropriate size for avoiding alveolar macrophage clearance or promoting transepithelial transport. METHODS This review focuses on the development and application of biodegradable polymers to nanocarrier-based strategies for the delivery of drugs, peptides, proteins, genes, siRNA and vaccines by the pulmonary route. RESULTS/CONCLUSION The selection of natural or synthetic materials is important in designing particles or nanoparticle clusters with the desired characteristics, such as biocompatibility, size, charge, drug release and polymer degradation rate.
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Affiliation(s)
- Erik Rytting
- Philipps-Universität Marburg, Institut für Pharmazeutische Technologie & Biopharmazie, Ketzerbach 63, D-35032 Marburg, Germany
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Gou ML, Qian ZY, Wang H, Tang YB, Huang MJ, Kan B, Wen YJ, Dai M, Li XY, Gong CY, Tu MJ. Preparation and characterization of magnetic poly(epsilon-caprolactone)-poly(ethylene glycol)-poly(epsilon-caprolactone) microspheres. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2007; 19:1033-41. [PMID: 17701292 DOI: 10.1007/s10856-007-3230-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2006] [Accepted: 06/18/2007] [Indexed: 02/05/2023]
Abstract
In this article, nano-magnetite particles (ferrofluid, Fe3O4) were prepared by chemical co-deposition method. A series of biodegradable triblock poly(epsilon-caprolactone)-poly(ethylene glycol)-poly(epsilon-caprolactone) (PCL-PEG-PCL, PCEC) copolymers were synthesized by ring-opening polymerization method from epsilon-caprolactone (epsilon-CL) initiated by poly(ethylene glycol) diol (PEG) using stannous octoate as catalyst. And the magnetic PCEC composite microspheres were prepared by solvent diffusion method. The properties of the ferrofluid, PCEC copolymer, and magnetic PCEC microspheres were studied in detail by SEM, VSM, XRD, Malvern Laser Particle Sizer, 1H-NMR, GPC, and TG/DTG. Effects of macromolecular weight and concentration of polymer, and the time for ultrasound dispersion on properties of magnetic microspheres were also investigated. The obtained magnetic PCEC microspheres might have great potential application in targeted drug delivery system or cell separation.
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Affiliation(s)
- Ma Ling Gou
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, 610041, China
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Shenoy DB, Amiji MM. An overview of condensing and noncondensing polymeric systems for gene delivery. ACTA ACUST UNITED AC 2007; 2007:pdb.top9. [PMID: 21357090 DOI: 10.1101/pdb.top9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTIONSelf-assembling synthetic vectors for DNA delivery are designed to fulfill several biological functions. They must be able to deliver their genetic payload specifically to the target tissue/cells in a site-specific manner, while protecting the genetic material from degradation by metabolic or immune pathways. Furthermore, they must exhibit minimal toxicity and be proven safe enough for therapeutic use. Ultimately, they must have the capability to express a therapeutic gene for a finite period of time in an appropriate, regulated fashion. The DNA encapsulated in these vectors may be in a condensed or noncondensed form, depending on the nature of the polymer and the technique used for formulating the vector system. The whole process presents many barriers at both tissue and cellular levels. Overcoming these hurdles is the principal objective for efficient polymer-based DNA therapeutics.
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Jewell CM, Hays ME, Kondo Y, Abbott NL, Lynn DM. Ferrocene-containing cationic lipids for the delivery of DNA: Oxidation state determines transfection activity. J Control Release 2006; 112:129-38. [PMID: 16529838 DOI: 10.1016/j.jconrel.2006.01.014] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2005] [Revised: 01/20/2006] [Accepted: 01/25/2006] [Indexed: 10/24/2022]
Abstract
The ability of two redox-active, ferrocene-containing cationic lipids [11-(ferrocenylundecyl)trimethylammonium bromide (FTMA) and bis(11-ferrocenylundecyl)dimethylammonium bromide (BFDMA)] to transfect mammalian cells was investigated. This study sought to determine the range of conditions over which these lipids were capable of transfecting cells and whether the oxidation state of the ferrocenyl groups in these materials could be used to influence the extent of transfection. Experiments conducted in the COS-7 cell line demonstrated that reduced and oxidized FTMA were substantially cytotoxic and did not transfect cells. Subsequent experiments conducted using BFDMA and reporter plasmids encoding enhanced green fluorescent protein (EGFP) and firefly luciferase demonstrated that BFDMA was able to transfect cells. However, the extent of transfection depended significantly upon both the concentration of BFDMA and the oxidation state of the lipid. Quantitative characterization of cytotoxicity and gene expression demonstrated that a window of concentration existed over which reduced BFDMA was non-cytotoxic and yielded high levels of transfection, but over which electrochemically oxidized BFDMA yielded very low (background) levels of transfection. Characterization of lipoplexes using dynamic light scattering demonstrated that reduced and oxidized BFDMA formed small aggregates (ca. 90 to 250nm) at concentrations of lipid ranging from 2 to 10 microM. Taken together, these results demonstrate that the oxidation state of BFDMA, which can be controlled electrochemically, can be used to control the extent of cell transfection. These results could form the basis of transfection procedures that exploit the redox behavior of ferrocene-containing lipids to achieve active spatial and temporal control over transfection using electrochemical methods.
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Affiliation(s)
- Christopher M Jewell
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706-1607, USA
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Abstract
Gene therapy has been deemed the medicine of the future due to its potential to treat many types of diseases. However, many obstacles remain before gene delivery is optimized to specific target cells. Over the last several decades, many approaches to gene delivery have been closely examined. By understanding the factors that determine the efficiency of gene uptake and expression as well as those that influence the toxicity of the vector, we are better able to develop new vector systems. This chapter will provide a brief overview of recent advances in gene delivery, specifically on the development of novel non-viral vectors. The following chapters will provide additional details regarding the evolution of non-viral gene delivery systems.
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Affiliation(s)
- Christine C Conwell
- Center for Pharmacogenetics, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA
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Jang JH, Shea LD. Intramuscular delivery of DNA releasing microspheres: microsphere properties and transgene expression. J Control Release 2006; 112:120-8. [PMID: 16530876 PMCID: PMC2648407 DOI: 10.1016/j.jconrel.2006.01.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2005] [Revised: 01/15/2006] [Accepted: 01/23/2006] [Indexed: 01/08/2023]
Abstract
Plasmid-loaded microspheres can provide localized and sustained release into the target tissue, and thus have the potential to enhance the efficiency of naked DNA at promoting transgene expression. In this report, microsphere design parameters are investigated by correlating the extent and duration of transgene expression intramuscularly to the polymer molecular weight and the mass of DNA delivered. Plasmid DNA was incorporated into poly (lactide-co-glycolide) microspheres using a cryogenic double emulsion process, and microspheres were injected intramuscularly. Bolus injection of naked plasmid was used for control, which exhibited transfection of muscle cells with transgene expression that gradually decreased over time. Microspheres fabricated from low molecular weight polymer had expression levels that increased from day 1 to day 92, which subsequently decreased through day 174. Decreasing the microsphere mass delivered resulted in steady expression during the same time. However, microspheres fabricated with high molecular weight polymer had expression for only 14 days. Intramuscular injection resulted in a foreign body response to the microspheres, and these infiltrating cells adjacent were primarily transfected. This understanding of microsphere properties that determine transgene expression and the distribution of transfected cells may facilitate their application to fields such as tissue engineering or DNA vaccines.
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Affiliation(s)
- Jae-Hyung Jang
- Department of Chemical Engineering, University of California, Berkeley, 201 Gilman Hall, CA 94720-1401, United States
| | - Lonnie D. Shea
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd E156 Evanston, IL 60208-3120, United States
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Rd E156 Evanston, IL 60208-3120, United States
- Corresponding author. Northwestern University, Department of Chemical Engineering, 2145 Sheridan Rd./E156, Evanston, IL 60208-3120, United States. Tel.: +1 847 491 7043; fax: +1 847 491 3728. E-mail address: (L.D. Shea)
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. SNU, . KI. Cationic Polymers and its Uses in Non-viral Gene Delivery Systems: A Conceptual Research. ACTA ACUST UNITED AC 2006. [DOI: 10.3923/tmr.2006.86.99] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Conwell CC, Huang L. Recent Advances in Non‐viral Gene Delivery. NON-VIRAL VECTORS FOR GENE THERAPY, SECOND EDITION: PART 1 2005; 53PA:1-18. [PMID: 16243058 DOI: 10.1016/s0065-2660(05)53001-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Gene therapy has been deemed the medicine of the future due to its potential to treat many types of diseases. However, many obstacles remain before gene delivery is optimized to specific target cells. Over the last several decades, many approaches to gene delivery have been closely examined. By understanding the factors that determine the efficiency of gene uptake and expression as well as those that influence the toxicity of the vector, we are better able to develop new vector systems. This chapter will provide a brief overview of recent advances in gene delivery, specifically on the development of novel non-viral vectors. The following chapters will provide additional details regarding the evolution of non-viral gene delivery systems.
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Affiliation(s)
- Christine C Conwell
- Center for Pharmacogenetics, School of Pharmacy University of Pittsburgh Pittsburgh, Pennsylvania 15261
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