351
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Klausner EA, Zhang Z, Chapman RL, Multack RF, Volin MV. Ultrapure chitosan oligomers as carriers for corneal gene transfer. Biomaterials 2010; 31:1814-20. [DOI: 10.1016/j.biomaterials.2009.10.031] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2009] [Accepted: 10/12/2009] [Indexed: 12/27/2022]
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352
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Sun B, Liu X, Buck ME, Lynn DM. Azlactone-functionalized polymers as reactive templates for parallel polymer synthesis: synthesis and screening of a small library of cationic polymers in the context of DNA delivery. Chem Commun (Camb) 2010; 46:2016-8. [PMID: 20221477 DOI: 10.1039/b921664b] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Azlactone-functionalized polymers are used as reactive templates for the synthesis of a library of amine-functionalized polymers of interest in the context of DNA delivery and other applications.
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Affiliation(s)
- Bin Sun
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
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353
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Xiang YZ, Feng ZH, Zhang J, Liao YL, Yu CJ, Yi WJ, Zhu W, Yu XQ. Linear cyclen-based polyamine as a novel and efficient reagent in gene delivery. Org Biomol Chem 2010; 8:640-7. [DOI: 10.1039/b914877a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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354
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Gao W, Xiao Z, Radovic-Moreno A, Shi J, Langer R, Farokhzad OC. Progress in siRNA delivery using multifunctional nanoparticles. Methods Mol Biol 2010; 629:53-67. [PMID: 20387142 DOI: 10.1007/978-1-60761-657-3_4] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Nanoparticles made from synthetic polymers have been developed to deliver small interfering RNA (siRNA). For successful siRNA delivery, these nanoparticles need to efficiently encapsulate siRNA, actively target sites of interest, and release siRNA intracellularly. This chapter reviews recent progress using a multifunctional approach to design and engineer polymeric nanoparticles for siRNA delivery.
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Affiliation(s)
- Weiwei Gao
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesia, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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355
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Abstract
Luminescent semiconductor nanocrystals, also known as quantum dots (QDs), have advanced the fields of molecular diagnostics and nanotherapeutics. Much of the initial progress for QDs in biology and medicine has focused on developing new biosensing formats to push the limit of detection sensitivity. Nevertheless, QDs can be more than passive bio-probes or labels for biological imaging and cellular studies. The high surface-to-volume ratio of QDs enables the construction of a "smart" multifunctional nanoplatform, where the QDs serve not only as an imaging agent but also a nanoscaffold catering for therapeutic and diagnostic (theranostic) modalities. This mini review highlights the emerging applications of functionalized QDs as fluorescence contrast agents for imaging or as nanoscale vehicles for delivery of therapeutics, with special attention paid to the promise and challenges towards QD-based theranostics.
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356
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Khiati S, Pierre N, Andriamanarivo S, Grinstaff MW, Arazam N, Nallet F, Navailles L, Barthélémy P. Anionic nucleotide--lipids for in vitro DNA transfection. Bioconjug Chem 2009; 20:1765-72. [PMID: 19711898 DOI: 10.1021/bc900163s] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A family of new anionic nucleotide based lipids featuring thymidine-3'-monophosphate as nucleotide and 1,2-diacyl-sn-glycerol as lipid moiety for in vitro delivery of nucleic acids is described. The nucleotide lipids were prepared in three steps starting from 1,2-diacyl-sn-glycerols and 2'-deoxythymidine-3'-phosphoramidite. Gel electrophoresis experiments show that nucleotide-based lipid-DNA complexes are observed at Ca(2+) concentration higher than 1 mM. The transfection experiments carried out on mammalian Hek cell lines clearly demonstrate that the nucleotide moiety enhances the transfection efficacy of the natural anionic DPPA and DPPG lipids. SAXS studies indicate that the enhancement in transfection for nucleotide-based lipid formulations compared to those of the abasic natural derivative (DPPA) is likely due to the presence of the 2D columnar inverted hexagonal phase (H(II)) with a unit cell parameter a = 69.1 A in the nucleotide lipid formulations. The cytotoxicity studies of lipoplexes, evaluated against Hek cells using an MTS assay, revealed that palmitoyl nucleotide derivative complexes were not toxic even after 4 h of incubation, thus indicating that the anionic nucleotide lipids presented in this work offer an alternative to cationic transfection reagents.
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357
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Sunshine J, Green JJ, Mahon KP, Yang F, Eltoukhy AA, Nguyen DN, Langer R, Anderson DG. Small-Molecule End-Groups of Linear Polymer Determine Cell-type Gene-Delivery Efficacy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2009; 21:4947-4951. [PMID: 25165411 PMCID: PMC4143259 DOI: 10.1002/adma.200901718] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2009] [Indexed: 05/22/2023]
Abstract
End-modified polymers are promising for the nonviral delivery of genes to cancer cells, immune cells, and human stem cells and point to polymer end-groups as regulators for cell-type specificity. A library of polymers has been synthesized and, although some polymers are strong transfection agents overall, for each cell type, a particular polymer is most effective.
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Affiliation(s)
- Joel Sunshine
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - Jordan J. Green
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - Kerry P. Mahon
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - Fan Yang
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - Ahmed A. Eltoukhy
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - David N. Nguyen
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - Robert Langer
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine Baltimore, MD 21205 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
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358
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Brunner T, Cohen S, Monsonego A. Silencing of proinflammatory genes targeted to peritoneal-residing macrophages using siRNA encapsulated in biodegradable microspheres. Biomaterials 2009; 31:2627-36. [PMID: 20035994 DOI: 10.1016/j.biomaterials.2009.12.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Accepted: 12/03/2009] [Indexed: 12/12/2022]
Abstract
One of the more substantial hurdles to be overcome in realizing the exciting potential of siRNA molecules as therapeutic agents for a wide range of diseases is the intact delivery of the active molecule into its target cell. Here, we present a platform for in vitro and in vivo delivery and intracellular release of siRNA in peritoneal macrophages (Mvarphis). The delivery platform is based on the encapsulation of siRNA in biodegradable poly(d,l-lactide) (PLA) microspheres, which are targeted to Mvarphis by the simple principle of size exclusion. Proof of concept was achieved using siRNAs targeting TNFalpha and CD86 in macrophages. We show that the release of the siRNA in peritoneal-derived macrophages in vitro occurs intracellularly, and is abrogated by cytochalasin B, a phagocytosis inhibitor. Silencing in these cells is potent and lasts for at least one week. In vivo, we prove that siRNA encapsulated in biodegradable PLA microspheres can be delivered to peritoneal-residing Mvarphis and can induce potent silencing of TNFalpha secretion for at least one week. The PLA microspheres hold great potential for in vivo use, due to their biocompatibility and degradability, and can potentially be used for in vivo immunomodulation of Mvarphis for treatment of autoimmune and chronic inflammatory conditions.
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Affiliation(s)
- Tali Brunner
- Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel
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359
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Polycationic Amphiphilic Cyclodextrins for Gene Delivery: Synthesis and Effect of Structural Modifications on Plasmid DNA Complex Stability, Cytotoxicity, and Gene Expression. Chemistry 2009; 15:12871-88. [DOI: 10.1002/chem.200901149] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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360
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Li Y, Zhu Y, Xia K, Sheng R, Jia L, Hou X, Xu Y, Cao A. Dendritic poly(L-lysine)-b-Poly(L-lactide)-b-dendritic poly(L-lysine) amphiphilic gene delivery vectors: roles of PLL dendritic generation and enhanced transgene efficacies via termini modification. Biomacromolecules 2009; 10:2284-93. [PMID: 19586045 DOI: 10.1021/bm900456x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
As an effort to prepare new efficient gene delivery vectors, we have recently developed and reported an amphiphilic dendritic poly(L-lysine)-b-poly(L-lactide)-b-dendritic poly(L-lysine) D(2)-PLLA-D(2) with two-generation PLL dendrons and a PLLA block. In this work, we continued to explore the roles of dendritic PLL generation in DNA binding and intracellular delivery of gene, and a new series of amphiphilic dendritic poly(L-lysine)-b-poly(L-lactide)-b-dendritic poly(L-lysine)s D(n)-PLLA-D(n) (n = 3-5) were synthesized and were structurally characterized. Furthermore, plasmid DNA binding affinity for these cationic amphiphiles was examined by agarose gel electrophoresis and fluorescence titration assay in pure water and PBS buffer solution containing 150 mM NaCl (pH = 7.4), respectively. By dynamic light scattering (DLS) and transmission electronic microscopy (TEM), the interaction and complexation in between were investigated, concerning the DNA/vector polyplex particle morphologies and zeta potentials. Utilizing a human hepatocellular carcinoma cell-line SMMC-7721, cell toxicity, and gene transfection in vitro were explored. To further improve transgene efficiency for these synthetic cationic amphiphiles as gene delivery vectors, new structural DE(n)-PLLA-DE(n) (n = 2-3) were prepared through an amino termini modification of the D(n)-PLLA-D(n) (n = 2-3) with less toxic 4,7,10,13-tetraazatridecanoic acids, and gene transfection with these DE(n)-PLLA-DE(n) (n = 2-3) was examined with an alternative human gastric carcinoma cell-line HGC-27. As a result, the high plasmid DNA binding affinity, low cytotoxicity, and much enhanced transgene efficacy suggest a new possible clue to design effective synthetic gene delivery vectors with amphiphilic skeleton and less toxic polyamine building blocks.
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Affiliation(s)
- Yang Li
- Laboratory for Polymer Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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361
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Zhang Q, Cheng SX, Zhang XZ, Zhuo RX. Water Soluble Polymer Protected Lipofectamine 2000/DNA Complexes for Solid-Phase Transfection. Macromol Biosci 2009; 9:1262-71. [DOI: 10.1002/mabi.200900255] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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362
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Sajomsang W, Ruktanonchai U, Gonil P, Mayen V, Opanasopit P. Methylated N-aryl chitosan derivative/DNA complex nanoparticles for gene delivery: Synthesis and structure–activity relationships. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2009.06.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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363
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Harris TJ, Green JJ, Fung PW, Langer R, Anderson DG, Bhatia SN. Tissue-specific gene delivery via nanoparticle coating. Biomaterials 2009; 31:998-1006. [PMID: 19850333 DOI: 10.1016/j.biomaterials.2009.10.012] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2009] [Accepted: 10/05/2009] [Indexed: 01/29/2023]
Abstract
The use of biomaterials for gene delivery can potentially avoid many of the safety concerns with viral gene delivery. However, the efficacy of polymeric gene delivery methods is low, particularly in vivo. One significant concern is that the interior and exterior composition of polymeric gene delivery nanoparticles are often coupled, with a single polymer backbone governing all functions from biophysical properties of the polymer/DNA particle to DNA condensation and release. In this work we develop electrostatically adsorbed poly(glutamic acid)-based peptide coatings to alter the exterior composition of a core gene delivery particle and thereby affect tissue-specificity of gene delivery function in vivo. We find that with all coating formulations tested, the coatings reduce potential toxicity associated with uncoated cationic gene delivery nanoparticles following systemic injection. Particles coated with a low 2.5:1 peptide:DNA weight ratio (w/w) form large 2 micro sized particles in the presence of serum that can facilitate specific gene delivery to the liver. The same particles coated at a higher 20:1w/w form small 200nm particles in the presence of serum that can facilitate specific gene delivery to the spleen and bone marrow. Thus, variations in nanoparticle peptide coating density can alter the tissue-specificity of gene delivery in vivo.
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Affiliation(s)
- Todd J Harris
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
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364
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Chong SF, Sexton A, De Rose R, Kent SJ, Zelikin AN, Caruso F. A paradigm for peptide vaccine delivery using viral epitopes encapsulated in degradable polymer hydrogel capsules. Biomaterials 2009; 30:5178-86. [DOI: 10.1016/j.biomaterials.2009.05.078] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2009] [Accepted: 05/30/2009] [Indexed: 01/28/2023]
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365
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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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366
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Harada A, Kawamura M, Kimura Y, Takahashi T, Kojima C, Kono K. Effect of head size in head-tail-type polycations on their in vitro performances as nonviral gene vectors. Macromol Biosci 2009; 9:605-12. [PMID: 19156689 DOI: 10.1002/mabi.200800314] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Three kinds of head-tail-type block copolymers composed of polyamidoamine (PAMAM) dendron heads and poly(L-lysine) (PLL) tail blocks (PAMAM dendron-PLL), having PAMAM dendrons with different generations (G2.5-PLL, G3.5-PLL and G4.5-PLL) were synthesized. Some of the dendron heads were located at polyplex surface, and G2.5-PLL and G3.5-PLL could form small polyplexes (less than 150 nm in size). G2.5-PLL and G3.5-PLL polyplexes were taken up into the cells more effectively. PAMAM dendron-PLL that had a larger dendron head could show a more-effective buffering effect. The in vitro performance of the PAMAM dendron-PLL polyplexes was controlled by the balance of cellular uptake and endosomal escape by a buffering effect.
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Affiliation(s)
- Atsushi Harada
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
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367
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Peters A, Brey DM, Burdick JA. High-Throughput and Combinatorial Technologies for Tissue Engineering Applications. TISSUE ENGINEERING PART B-REVIEWS 2009; 15:225-39. [DOI: 10.1089/ten.teb.2009.0049] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Anthony Peters
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Darren M. Brey
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jason A. Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania
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368
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Seow WY, Yang YY, George AJT. Oligopeptide-mediated gene transfer into mouse corneal endothelial cells: expression, design optimization, uptake mechanism and nuclear localization. Nucleic Acids Res 2009; 37:6276-89. [PMID: 19692581 PMCID: PMC2764440 DOI: 10.1093/nar/gkp651] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Gene transfer to the corneal endothelium has potential in preventing corneal transplant rejection. In this study, we transfected mouse corneal endothelial cells (MCEC) with a class of novel arginine-rich oligopeptides. The peptides featured a tri-block design and mediated reporter gene expression in MCEC more efficiently than the commercial polyethylenimine standard. The functionality of each block was demonstrated to critically influence the performance of the peptide. Results from confocal imaging and flow cytometry then showed that energy-dependent endocytosis was the dominant form of uptake and multiple pathways were involved. Additionally, uptake was strongly dependent on interactions with cell-surface heparan sulphate. Fluorescence resonance energy transfer studies revealed that the peptide/DNA entered cells as an associated complex and some will have dissociated by 8.5 h. Large-scale accumulation of uncondensed DNA within the nucleus can also be observed by 26 h. Finally, as a proof of biological relevance, we transfected MCEC with plasmids encoding for the functional indoleamine 2,3-dioxygenase (IDO) enzyme. We then demonstrated that the expressed IDO could catalyse the degradation of l-tryptophan, which in turn suppressed the growth of CD4+ T-cells in a proliferation assay.
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Affiliation(s)
- Wei Yang Seow
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
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369
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Yang L, Webster TJ. Nanotechnology controlled drug delivery for treating bone diseases. Expert Opin Drug Deliv 2009; 6:851-64. [DOI: 10.1517/17425240903044935] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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370
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Ou M, Xu R, Kim SH, Bull DA, Kim SW. A family of bioreducible poly(disulfide amine)s for gene delivery. Biomaterials 2009; 30:5804-14. [PMID: 19615739 DOI: 10.1016/j.biomaterials.2009.06.050] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Accepted: 06/26/2009] [Indexed: 10/20/2022]
Abstract
A family of bioreducible poly(disulfide amine)s, which differ in the length of polymethylene spacer [-(CH(2))(n)-] in the main chain and the side chain, has been synthesized. These bioreducible poly(disulfide amine)s exhibit local environment specific degradability and are associated with lower cytotoxicity than branched poly(ethylenimine) (bPEI, 25 kDa). These cationic polymers also show higher buffering capacity and protonation degree than bPEI, facilitating the endosomal escape of carried genetic materials. The transfection efficiency of these agents is oligomethylene length dependent. Poly(cystaminebisacrylamide-spermine) [poly(CBA-SP)], poly(cystaminebisacrylamide-bis(3-aminopropyl)-1,3-propanediamine) [poly(CBA-APPD)], and poly(cyxtaminebisacrylamide-bis(3-aminopropyl)-ethylenediamine) [ploy(CBA-APED)] with longer propylene [-(CH(2))(3)-] side spacer, demonstrate higher transfection efficacy than the counterpart poly(cystaminebisacrylamide-bis(2-aminoethyl)-1,3-propanediamine) [poly(CBA-AEPD)] and poly(cystaminebisacrylamide-triethylenetetramine) [poly(CBA-TETA)], which have shorter ethylene [-(CH(2))(2)-] side spacer. The poly(CBA-SP), poly(CBA-APPD), poly(CBA-APED) with the main chain spacer of -(CH(2))(4)-, -(CH(2))(3)-, -(CH(2))(2)- demonstrate similar transfection efficiency, indicating the length of polymer main chain spacer has less influence on transfection efficiency. However, with the same short ethylene [-(CH(2))(2)-] side spacer, poly(CBA-AEPD), with the longer main chain oligomethylene units [-(CH(2))(3)-], showed relatively higher transfection efficiency than poly(CBA-TETA), having shorter main chain oligomethylene units [-(CH(2))(2)-]. Of these polymeric carriers, poly(CBA-SP) demonstrated the highest transfection in the C2C12 cell line, while poly(CBA-APED) showed the highest transfection in the HeLa cell line. All of these agents showed greater transfection activity than commercialized bPEI 25 kDa. The poly(disulfide amine)s are promising safe and efficient non-viral vectors for gene delivery.
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Affiliation(s)
- Mei Ou
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA
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371
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Bettinger C, Langer R, Borenstein J. Die Entwicklung von Substrattopographien im Mikro- und Nanobereich zur Steuerung von Zellfunktionen. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805179] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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372
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Ito A, Takahashi T, Kameyama Y, Kawabe Y, Kamihira M. Magnetic concentration of a retroviral vector using magnetite cationic liposomes. Tissue Eng Part C Methods 2009; 15:57-64. [PMID: 18991483 DOI: 10.1089/ten.tec.2008.0275] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
For tissue engineering purposes, retroviral vectors represent an efficient method of delivering exogenous genes such as growth factors to injured tissues because gene-transduced cells can produce stable and constant levels of the gene product. However, retroviral vector technology suffers from low yields. In the present study, we used magnetite nanoparticles and magnetic force to concentrate the retroviral vectors to enhance the transduction efficiency and to enable their magnetic manipulation. Magnetite nanoparticles modified with cationic liposomes were added to a solution containing a retroviral vector pseudotyped with vesicular stomatitis virus glycoprotein. The magnetic particles that captured the viral vectors were collected using a magnetic force and seeded into mouse neuroblastoma Neuro2a cells. The viral titer was up to 55 times greater (up to 3 x 10(8) infectious units/mL). Additionally, the magnetically labeled retroviral vectors can be directed to the desired regions for infection by applying magnetic fields, and micro-patterns of gene-transduced cell regions could be created on a cellular monolayer using micro-patterned magnetic concentrators. These results suggest that this technique provides a promising approach to capturing and concentrating viral vectors, thus achieving high transduction efficiency and the ability to deliver genes to a specific injured site by applying a magnetic field.
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Affiliation(s)
- Akira Ito
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University , Nishi-ku, Fukuoka, Japan
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373
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Lee JH, Lee K, Moon S, Lee Y, Park T, Cheon J. All-in-One Target-Cell-Specific Magnetic Nanoparticles for Simultaneous Molecular Imaging and siRNA Delivery. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805998] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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374
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Lee JH, Lee K, Moon S, Lee Y, Park T, Cheon J. All-in-One Target-Cell-Specific Magnetic Nanoparticles for Simultaneous Molecular Imaging and siRNA Delivery. Angew Chem Int Ed Engl 2009; 48:4174-9. [DOI: 10.1002/anie.200805998] [Citation(s) in RCA: 302] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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375
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Chen HH, Ho YP, Jiang X, Mao HQ, Wang TH, Leong KW. Simultaneous Non-invasive Analysis of DNA Condensation and Stability by Two-step QD-FRET. NANO TODAY 2009; 4:125-134. [PMID: 20161048 PMCID: PMC2746678 DOI: 10.1016/j.nantod.2009.02.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanoscale vectors comprised of cationic polymers that condense DNA to form nanocomplexes are promising options for gene transfer. The rational design of more efficient nonviral gene carriers will be possible only with better mechanistic understanding of the critical rate-limiting steps, such as nanocomplex unpacking to release DNA and degradation by nucleases. We present a two-step quantum dot fluorescence resonance energy transfer (two-step QD-FRET) approach to simultaneously and non-invasively analyze DNA condensation and stability. Plasmid DNA, double-labeled with QD (525 nm emission) and nucleic acid dyes, were complexed with Cy5-labeled cationic gene carriers. The QD donor drives energy transfer stepwise through the intermediate nucleic acid dye to the final acceptor Cy5. At least three distinct states of DNA condensation and integrity were distinguished in single particle manner and within cells by quantitative ratiometric analysis of energy transfer efficiencies. This novel two-step QD-FRET method allows for more detailed assessment of the onset of DNA release and degradation simultaneously.
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Affiliation(s)
- Hunter H. Chen
- Dept. of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, MD
- Dept. of Biomedical Engineering, Duke University, Durham, NC
| | - Yi-Ping Ho
- Dept. of Mechanical Engineering, Johns Hopkins University, Baltimore, MD
- Dept. of Biomedical Engineering, Duke University, Durham, NC
| | - Xuan Jiang
- Dept. of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD
| | - Hai-Quan Mao
- Dept. of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD
| | - Tza-Huei Wang
- Dept. of Mechanical Engineering, Johns Hopkins University, Baltimore, MD
| | - Kam W. Leong
- Dept. of Biomedical Engineering, Duke University, Durham, NC
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376
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377
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Giordano C, Causa F, Bianco F, Perale G, Netti PA, Ambrosio L, Cigada A. Gene delivery systems for gene therapy in tissue engineering and central nervous system applications. Int J Artif Organs 2009; 31:1017-26. [PMID: 19115193 DOI: 10.1177/039139880803101205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The present review aims to describe the potential applications of gene delivery systems to tissue engineering and central nervous system diseases. Some key experimental work has been done with interesting results, but the subject is far from being fully explored. The combined approach of gene therapy and material science has a huge potential to improve the therapeutic approaches now available for a wide range of medical applications. Focus is given to this multidisciplinary strategy in neurodegenerative pathologies, where the use of polymeric matrices as gene carriers might make a crucial difference.
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Affiliation(s)
- C Giordano
- Department of Chemistry, Materials and Chemical Engineering G. Natta, Politecnico di Milano, Milano, Italy.
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378
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Barua S, Joshi A, Banerjee A, Matthews D, Sharfstein ST, Cramer SM, Kane RS, Rege K. Parallel synthesis and screening of polymers for nonviral gene delivery. Mol Pharm 2009; 6:86-97. [PMID: 19102694 DOI: 10.1021/mp800151j] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We describe the parallel synthesis and in vitro evaluation of a cationic polymer library for the discovery of nonviral gene delivery vectors. The library was synthesized based on the ring-opening polymerization reaction between epoxide groups of diglycidyl ethers and the amines of (poly)amines. Parallel screening of soluble library constituents led to the identification of lead polymers with high DNA-binding efficacies. Transfection efficacies of lead polymers were evaluated using PC3-PSMA human prostate cancer cells and murine osteoblasts in the absence and presence of serum. In vitro experiments resulted in the identification of a candidate polymer that demonstrated significantly higher transfection efficacies and lower cytotoxicities than poly(ethyleneimine) (pEI), the current standard for polymeric transfection agents. In addition, polymers that demonstrated moderately higher and comparable transfection efficacies with respect to pEI were also identified. Our results demonstrate that high-throughput synthesis and screening of polymers is a powerful approach for the identification of novel nonviral gene delivery agents.
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Affiliation(s)
- Sutapa Barua
- Department of Chemical Engineering, Arizona State University, Tempe, Arizona 85287-6006, USA
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379
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Lendlein A, Zotzmann J, Feng Y, Alteheld A, Kelch S. Controlling the Switching Temperature of Biodegradable, Amorphous, Shape-Memory Poly(rac-lactide)urethane Networks by Incorporation of Different Comonomers. Biomacromolecules 2009; 10:975-82. [DOI: 10.1021/bm900038e] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andreas Lendlein
- Center for Biomaterial Development, Institute of Polymer Research, GKSS Research Center Geesthacht GmbH, 14513 Teltow, Germany, Department of Polymer Science and Technology, Tianjin University, 92 Weijin Road, Tianjin 300072, People’s Republic of China, BASF Aktiengesellschaft, Polymer Research, Carl-Bosch-Str. 38, 67056 Ludwigshafen, Germany, and Sika Technology AG, Tüffenwies 16, CH-8048 Zürich, Switzerland
| | - Jörg Zotzmann
- Center for Biomaterial Development, Institute of Polymer Research, GKSS Research Center Geesthacht GmbH, 14513 Teltow, Germany, Department of Polymer Science and Technology, Tianjin University, 92 Weijin Road, Tianjin 300072, People’s Republic of China, BASF Aktiengesellschaft, Polymer Research, Carl-Bosch-Str. 38, 67056 Ludwigshafen, Germany, and Sika Technology AG, Tüffenwies 16, CH-8048 Zürich, Switzerland
| | - Yakai Feng
- Center for Biomaterial Development, Institute of Polymer Research, GKSS Research Center Geesthacht GmbH, 14513 Teltow, Germany, Department of Polymer Science and Technology, Tianjin University, 92 Weijin Road, Tianjin 300072, People’s Republic of China, BASF Aktiengesellschaft, Polymer Research, Carl-Bosch-Str. 38, 67056 Ludwigshafen, Germany, and Sika Technology AG, Tüffenwies 16, CH-8048 Zürich, Switzerland
| | - Armin Alteheld
- Center for Biomaterial Development, Institute of Polymer Research, GKSS Research Center Geesthacht GmbH, 14513 Teltow, Germany, Department of Polymer Science and Technology, Tianjin University, 92 Weijin Road, Tianjin 300072, People’s Republic of China, BASF Aktiengesellschaft, Polymer Research, Carl-Bosch-Str. 38, 67056 Ludwigshafen, Germany, and Sika Technology AG, Tüffenwies 16, CH-8048 Zürich, Switzerland
| | - Steffen Kelch
- Center for Biomaterial Development, Institute of Polymer Research, GKSS Research Center Geesthacht GmbH, 14513 Teltow, Germany, Department of Polymer Science and Technology, Tianjin University, 92 Weijin Road, Tianjin 300072, People’s Republic of China, BASF Aktiengesellschaft, Polymer Research, Carl-Bosch-Str. 38, 67056 Ludwigshafen, Germany, and Sika Technology AG, Tüffenwies 16, CH-8048 Zürich, Switzerland
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380
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Branco MC, Schneider JP. Self-assembling materials for therapeutic delivery. Acta Biomater 2009; 5:817-31. [PMID: 19010748 PMCID: PMC2729065 DOI: 10.1016/j.actbio.2008.09.018] [Citation(s) in RCA: 326] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2008] [Revised: 09/06/2008] [Accepted: 09/23/2008] [Indexed: 01/18/2023]
Abstract
A growing number of medications must be administered through parenteral delivery, i.e., intravenous, intramuscular, or subcutaneous injection, to ensure effectiveness of the therapeutic. For some therapeutics, the use of delivery vehicles in conjunction with this delivery mechanism can improve drug efficacy and patient compliance. Macromolecular self-assembly has been exploited recently to engineer materials for the encapsulation and controlled delivery of therapeutics. Self-assembled materials offer the advantages of conventional crosslinked materials normally used for release, but also provide the ability to tailor specific bulk material properties, such as release profiles, at the molecular level via monomer design. As a result, the design of materials from the "bottom up" approach has generated a variety of supramolecular devices for biomedical applications. This review provides an overview of self-assembling molecules, their resultant structures, and their use in therapeutic delivery. It highlights the current progress in the design of polymer- and peptide-based self-assembled materials.
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Affiliation(s)
- Monica C. Branco
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
- Department of Chemical Engineering, University of Delaware, Newark, DE 19716, USA
| | - Joel P. Schneider
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
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381
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Saurer EM, Jewell CM, Kuchenreuther JM, Lynn DM. Assembly of erodible, DNA-containing thin films on the surfaces of polymer microparticles: toward a layer-by-layer approach to the delivery of DNA to antigen-presenting cells. Acta Biomater 2009; 5:913-24. [PMID: 18838346 PMCID: PMC2667125 DOI: 10.1016/j.actbio.2008.08.022] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2008] [Revised: 08/26/2008] [Accepted: 08/26/2008] [Indexed: 01/29/2023]
Abstract
We report a layer-by-layer approach to the assembly of ultrathin and erodible DNA-containing films on the surfaces of polymer microparticles. DNA-containing multilayered films were fabricated layer-by-layer on the surfaces of polystyrene microspheres (approximately 6 microm) by iterative and alternating cycles of particle suspension, centrifugation and resuspension in solutions of plasmid DNA and a hydrolytically degradable polyamine. Film growth occurred in a stepwise manner, as demonstrated by characterization of the zeta potentials and fluorescence intensities of film-coated particles during film assembly. Characterization of film-coated particles by confocal fluorescence microscopy and scanning electron microscopy revealed the multilayered particle coatings to be smooth, uniform and free of large-scale physical defects. Film-coated microparticles sustained the release of transcriptionally active DNA into solution for approximately three days when incubated in physiologically relevant media. Previous studies have demonstrated that the adsorption of DNA onto the surfaces of cationic microparticles can be used to target the delivery of DNA to antigen-presenting cells. As a first step toward the application of this layer-by-layer approach to the development of methods for the delivery of DNA to antigen-presenting cells, we demonstrated that film-coated microparticles could be used to transport DNA into macrophage cells in vitro using a model mouse macrophage cell line. Our results suggest the basis of a general approach that could, with further development, prove useful for the delivery of DNA-encoded antigens to macrophages, or other antigen-presenting cells, and provide new materials-based methods for the formulation and delivery of DNA vaccines.
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Affiliation(s)
- Eric M Saurer
- Department of Chemical and Biological Engineering, University of Wisconsin - Madison, 1415 Engineering Drive, Madison, WI 53706, USA
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382
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Wong SY, Sood N, Putnam D. Combinatorial evaluation of cations, pH-sensitive and hydrophobic moieties for polymeric vector design. Mol Ther 2009; 17:480-90. [PMID: 19142180 PMCID: PMC2835077 DOI: 10.1038/mt.2008.293] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Accepted: 12/08/2008] [Indexed: 01/21/2023] Open
Abstract
Three combinatorial libraries of polymeric vectors were evaluated to investigate the functional roles of molecular weight (MW), cations, pH-sensitive moieties, and hydrophobic derivitization in polymer-mediated gene delivery. Four cationic and pH-sensitive moieties (imidazole, primary, secondary, and tertiary amino) and three hydrophobic residues (C4 butyl, C6 hexyl, and C8 octyl) were assessed in single and serially incremented, binary combinations. Three MWs were evaluated-10, 30, and 50 kDa. The highest levels of transfection, comparable to branched PEI (25 kDa), were achieved by 30 kDa and 50 kDa formulations containing primary amino and imidazole groups. Primary amino groups offered superior charge-neutralizing and size-condensing capacity, while imidazole groups appeared to bind with DNA via nonelectrostatically mediated interactions to produce stable polyplexes that were resistant to premature dissociation. Eight of the 10 highest-transfecting polymers possessed IC(50) values greater than the maximum concentration of free polymers exposed to cells (200 microg/ml). The results herein have identified highly efficient polymeric formulations with superb toxicity profiles and have revealed the functional roles that the investigated pendant groups play in the transfection process. The reported polymeric system offers a versatile and robust platform upon which future structure-function studies may be based to create safer and more efficient polymeric vectors.
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Affiliation(s)
- Sharon Y Wong
- 1Department of Biomedical Engineering, Cornell University, Ithaca, New York 14853, USA
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383
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Liang X, Tian H, Luo H, Wang H, Chang J. Novel quaternized chitosan and polymeric micelles with cross-linked ionic cores for prolonged release of minocycline. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2009; 20:115-31. [PMID: 19105904 DOI: 10.1163/156856208x393536] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Novel multifunctional octadecyl quaternized carboxymethyl chitosans (OQCMCs) with varying degree of quaternary substitution (DS) and molecular mass were prepared and compared with quaternized chitosan. OQCMCs exhibited excellent solubility both in water and organic solvents. Nanoparticles of OQCMCs offered many advantages, such as easier fabrication and modulation of their size and degree of positive charge, and a lower cytotoxic effect compared with PEI (25 kDa). DNA can be successfully adsorbed on its surface. Electrostatic attraction of carboxymethyl and quaternary groups in OQCMCs was utilized as micellar template for the synthesis of cross-linked micelles. Formation and characteristics of OQCMC polymeric micelles were studied by fluorescence spectroscopy, tensiometry, SEM, TEM and particle size analysis. Self-assembled OQCMC micelles were evaluated as carrier of the lipophilic drug, minocycline hydrochloride (MH). MH was incorporated into cross-linked ionic cores of micelles with remarkably high efficiency (22.7%, w/w). MH-loaded OQCMC polymeric micelles exhibited a slow steady release profile over a 1-week period at 37 degrees C. The OQCMC micelles are potentially useful for gene and lipophilic drug delivery applications.
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Affiliation(s)
- Xiaofei Liang
- Institute of Nanobiotechnology, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
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384
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Nguyen DN, Green JJ, Chan JM, Longer R, Anderson DG. Polymeric Materials for Gene Delivery and DNA Vaccination. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2009; 21:847-867. [PMID: 28413262 PMCID: PMC5391878 DOI: 10.1002/adma.200801478] [Citation(s) in RCA: 177] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Gene delivery holds great potential for the treatment of many different diseases. Vaccination with DNA holds particular promise, and may provide a solution to many technical challenges that hinder traditional vaccine systems including rapid development and production and induction of robust cell-mediated immune responses. However, few candidate DNA vaccines have progressed past preclinical development and none have been approved for human use. This Review focuses on the recent progress and challenges facing materials design for nonviral DNA vaccine drug delivery systems. In particular, we highlight work on new polymeric materials and their effects on protective immune activation, gene delivery, and current efforts to optimize polymeric delivery systems for DNA vaccination.
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Affiliation(s)
- David N Nguyen
- Massachusetts Institute of Technology, 77 Massachusetts Ave, E25 Room 342, Cambridge, MA 02139 (USA)
| | - Jordan J Green
- Massachusetts Institute of Technology, 77 Massachusetts Ave, E25 Room 342, Cambridge, MA 02139 (USA)
| | - Juliana M Chan
- Massachusetts Institute of Technology, 77 Massachusetts Ave, E25 Room 342, Cambridge, MA 02139 (USA)
| | - Robert Longer
- Massachusetts Institute of Technology, 77 Massachusetts Ave, E25 Room 342, Cambridge, MA 02139 (USA)
| | - Daniel G Anderson
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Ave, E25 Room 342, Cambridge, MA 02139 (USA)
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385
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Nayak A, Suresh KA. Mechanical Properties of Langmuir−Blodgett Films of a Discogen−DNA Complex by Atomic Force Microscopy. J Phys Chem B 2009; 113:3669-75. [DOI: 10.1021/jp806600g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Alpana Nayak
- Raman Research Institute, Sadashivanagar, Bangalore 560 080, India, and Centre for Liquid Crystal Research, P.B.No.1329, Jalahalli, Bangalore 560 013, India
| | - K. A. Suresh
- Raman Research Institute, Sadashivanagar, Bangalore 560 080, India, and Centre for Liquid Crystal Research, P.B.No.1329, Jalahalli, Bangalore 560 013, India
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386
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Whitehead KA, Langer R, Anderson DG. Knocking down barriers: advances in siRNA delivery. Nat Rev Drug Discov 2009. [PMID: 19180106 DOI: 10.1038/nrd3182] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the 10 years that have passed since the Nobel prize-winning discovery of RNA interference (RNAi), billions of dollars have been invested in the therapeutic application of gene silencing in humans. Today, there are promising data from ongoing clinical trials for the treatment of age-related macular degeneration and respiratory syncytial virus. Despite these early successes, however, the widespread use of RNAi therapeutics for disease prevention and treatment requires the development of clinically suitable, safe and effective drug delivery vehicles. Here, we provide an update on the progress of RNAi therapeutics and highlight novel synthetic materials for the encapsulation and intracellular delivery of nucleic acids.
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Affiliation(s)
- Kathryn A Whitehead
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA
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387
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Abstract
RNA interference (RNAi) is a fundamental pathway in eukaryotic cells by which sequence-specific small interfering RNA (siRNA) is able to silence genes through the destruction of complementary mRNA. RNAi is an important therapeutic tool that can be used to silence aberrant endogenous genes or to knockdown genes essential to the proliferation of infectious organisms. Delivery remains the central challenge to the therapeutic application of RNAi technology. Before siRNA can take effect in the cytoplasm of a target cell, it must be transported through the body to the target site without undergoing clearance or degradation. Currently, the most effective synthetic, non-viral delivery agents of siRNA are lipids, lipid-like materials and polymers. Various cationic agents including stable nucleic acid–lipid particles, lipidoids, cyclodextrin polymers and polyethyleneimine polymers have been used to achieve the successful systemic delivery of siRNA in mammals without inducing significant toxicity. Direct conjugation of delivery agents to siRNA can facilitate delivery. For example, cholesterol-modified siRNA enables targeting to the liver. RNAi therapeutics have progressed to the clinic, where studies are being conducted to determine siRNA efficacy in treating several diseases, including age-related macular degeneration and respiratory syncytial virus. Moving forward, it will be important to pay close attention to the potential nonspecific immunostimulatory effects of siRNA. Modifications to siRNA can be used to minimize stimulation of the immune system, and an increased emphasis must be placed on performing proper controls to ensure that therapeutic effects are sequence-specific.
RNA interference holds vast potential as a therapeutic strategy for both disease prevention and treatment, but its use has so far been hampered by a lack of safe and effective delivery techniques. In their Review, Anderson and colleagues discuss the challenges associated with small interfering RNA delivery and highlight promising novel synthetic delivery agents. In the 10 years that have passed since the Nobel prize-winning discovery of RNA interference (RNAi), billions of dollars have been invested in the therapeutic application of gene silencing in humans. Today, there are promising data from ongoing clinical trials for the treatment of age-related macular degeneration and respiratory syncytial virus. Despite these early successes, however, the widespread use of RNAi therapeutics for disease prevention and treatment requires the development of clinically suitable, safe and effective drug delivery vehicles. Here, we provide an update on the progress of RNAi therapeutics and highlight novel synthetic materials for the encapsulation and intracellular delivery of nucleic acids.
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Affiliation(s)
- Kathryn A Whitehead
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA
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388
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Saito Y, Higuchi Y, Kawakami S, Yamashita F, Hashida M. Immunostimulatory Characteristics Induced by Linear Polyethyleneimine–Plasmid DNA Complexes in Cultured Macrophages. Hum Gene Ther 2009; 20:137-45. [DOI: 10.1089/hum.2008.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Yasunori Saito
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yuriko Higuchi
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shigeru Kawakami
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Fumiyoshi Yamashita
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mitsuru Hashida
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
- Institute for Integrated Cell-Material Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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389
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Ceballos C, Prata CAH, Giorgio S, Garzino F, Payet D, Barthélémy P, Grinstaff MW, Camplo M. Cationic nucleoside lipids based on a 3-nitropyrrole universal base for siRNA delivery. Bioconjug Chem 2009; 20:193-6. [PMID: 19159294 PMCID: PMC2819530 DOI: 10.1021/bc800432n] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cationic nucleoside lipids based on a 3-nitropyrrole universal base were prepared from D-ribose using a straightforward chemical synthesis. Several studies including DLS, TEM, and ethidium bromide (EthBr) assay demonstrated that these amphiphilic molecules form supramolecular organizations of nanometer size in aqueous solutions and are able to bind nucleic acids. siRNA knockdown experiments were performed with these nucleolipids, and we observed protein knockdown activity similar to the siPORT NeoFX positive control. No significant cytotoxicity was found.
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Affiliation(s)
- Claire Ceballos
- Centre Interdisciplinaire de Nanosciences de Marseille CINaM, UPR-CNRS 3118, Université Aix-Marseille II, Luminy, Case 913, 13288 Marseille Cedex 09, France
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390
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Fu HL, Cheng SX, Zhang XZ, Zhuo RX. Dendrimer/DNA complexes encapsulated functional biodegradable polymer for substrate-mediated gene delivery. J Gene Med 2009; 10:1334-42. [PMID: 18816481 DOI: 10.1002/jgm.1258] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND To overcome the extracellular barriers in gene delivery and direct gene delivery to target tissues, substrate-mediated transfection, which sustains the release of naked DNA or vector/DNA complexes, and also supports cell growth, has been developed. METHODS In the present study, polyamidoamine (PAMAM) dendrimer/DNA complexes encapsulated functional biodegradable polymer films for substrate-mediated gene delivery were prepared. To maintain the activity of DNA during dehydration, the dendrimer/DNA complexes were encapsulated in a water soluble polymer, poly alpha,beta-[N-(2-hydroxyethyl)-(L)-aspartamide], and then deposited on or sandwiched in functional polymer films with a fast degradation rate to mediate gene transfection. The in vitro gene transfections of pGL3-Luc and pEGFP-C1 plasmids in HEK293 cells mediated by different films were studied. For comparison, the transfection mediated by the film fabricated by conventional linear poly((DL)-lactide) was also investigated. RESULTS The expression of pGL3-Luc and pEGFP-C1 plasmids could effectively be mediated by the PAMAM/DNA complexes deposited or sandwiched polymer films, with transfection efficiencies comparable to that of solution-based transfections. The cells on the functionalized star poly((DL)-lactide) film exhibited much higher gene expression compared to the cells on the conventional linear poly((DL)-lactide) film because the fast degradation rate of star poly((DL)-lactide) facilitated the access of PAMAM/DNA complexes for the cells seeded on the film. In addition, the films did not exhibit any additional cytotoxicity to the cells during the degradation and transfection. CONCLUSIONS The fast degrading functional polymer has great potential for localized transfection.
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Affiliation(s)
- Hui-Li Fu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, PR China
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391
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Bettinger CJ, Langer R, Borenstein JT. Engineering substrate topography at the micro- and nanoscale to control cell function. Angew Chem Int Ed Engl 2009; 48:5406-15. [PMID: 19492373 PMCID: PMC2834566 DOI: 10.1002/anie.200805179] [Citation(s) in RCA: 843] [Impact Index Per Article: 56.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The interaction of mammalian cells with nanoscale topography has proven to be an important signaling modality in controlling cell function. Naturally occurring nanotopographic structures within the extracellular matrix present surrounding cells with mechanotransductive cues that influence local migration, cell polarization, and other functions. Synthetically nanofabricated topography can also influence cell morphology, alignment, adhesion, migration, proliferation, and cytoskeleton organization. We review the use of in vitro synthetic cell-nanotopography interactions to control cell behavior and influence complex cellular processes, including stem-cell differentiation and tissue organization. Future challenges and opportunities in cell-nanotopography engineering are also discussed, including the elucidation of mechanisms and applications in tissue engineering.
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Affiliation(s)
- Christopher J Bettinger
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room E25-342, Cambridge, MA, 02139
- Biomedical Engineering Center, Charles Stark Draper Laboratory, 555 Technology Square, Cambridge, MA, 02139
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room E25-342, Cambridge, MA, 02139
| | - Jeffrey T Borenstein
- Biomedical Engineering Center, Charles Stark Draper Laboratory, 555 Technology Square, Cambridge, MA, 02139
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392
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Green JJ, Zugates GT, Langer R, Anderson DG. Poly(beta-amino esters): procedures for synthesis and gene delivery. Methods Mol Biol 2009; 480:53-63. [PMID: 19085119 PMCID: PMC4059050 DOI: 10.1007/978-1-59745-429-2_4] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Non-viral gene delivery systems are promising as they avoid many problems of viral gene therapy by having increased design flexibility, high safety, large DNA cargo capacity, and ease of manufacture. Here, we describe the use of polymeric vectors, in particular biodegradable poly(beta-amino esters) (PBAEs), for non-viral gene delivery. These polymers are able to self-assemble with DNA and form positively charged gene delivery nanoparticles. Methods for synthesis of these polymers, particle self-assembly, and transfection using these particles are delineated. A standard protocol is presented as well as a high-throughput screening technique that can be used to more quickly optimize transfection parameters for efficient delivery.
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Affiliation(s)
- Jordan J Green
- Department of Biological Engineering, Department of Chemical Engineering, and Center for Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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393
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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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394
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Zawaneh PN, Putnam D. Materials in Surgery: A Review of Biomaterials in Postsurgical Tissue Adhesion and Seroma Prevention. TISSUE ENGINEERING PART B-REVIEWS 2008; 14:377-91. [DOI: 10.1089/ten.teb.2008.0226] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Peter N. Zawaneh
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York
| | - David Putnam
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York
- Department of Biomedical Engineering, Cornell University, Ithaca, New York
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395
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Jewell CM, Lynn DM. Surface-Mediated Delivery of DNA: Cationic Polymers Take Charge. Curr Opin Colloid Interface Sci 2008; 13:395-402. [PMID: 19956345 PMCID: PMC2621072 DOI: 10.1016/j.cocis.2008.03.005] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The last several years have seen a significant increase in the number of reports describing the use of cationic polymers to design new materials and nanoscale assemblies that promote the surface-mediated delivery of DNA to cells and tissues. In general, these approaches fall into one of two broad categories: (i) methods based upon the physical adsorption of preformed, colloidal aggregates of cationic polymer and DNA (polyplexes) to surfaces, and (ii) methods for the layer-by-layer adsorption of DNA and cationic polymers on surfaces to fabricate multilayered thin films that provide control over the release of DNA into solution or to cells. In this Opinion, we discuss several recent examples of each of these approaches and provide commentary on ways in which the physical and chemical behaviours of cationic polymers have played key roles and present future opportunities to develop new methods for localized and surface-mediated cell transfection in vitro and in vivo.
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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, USA
| | - David M. Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin – Madison 1415 Engineering Drive, Madison, WI 53706, USA
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396
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Guo XD, Tandiono F, Wiradharma N, Khor D, Tan CG, Khan M, Qian Y, Yang YY. Cationic micelles self-assembled from cholesterol-conjugated oligopeptides as an efficient gene delivery vector. Biomaterials 2008; 29:4838-46. [DOI: 10.1016/j.biomaterials.2008.07.053] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Accepted: 07/27/2008] [Indexed: 12/21/2022]
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397
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Veiseh O, Kievit FM, Gunn JW, Ratner BD, Zhang M. A ligand-mediated nanovector for targeted gene delivery and transfection in cancer cells. Biomaterials 2008; 30:649-57. [PMID: 18990439 DOI: 10.1016/j.biomaterials.2008.10.003] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Accepted: 10/03/2008] [Indexed: 11/16/2022]
Abstract
As conventional cancer therapies struggle with toxicity issues and irregular remedial efficacy, the preparation of novel gene therapy vectors could offer clinicians the tools for addressing the genetic errors of diseased tissue. The transfer of gene therapy to the clinic has proven difficult due to safety, target specificity, and transfection efficiency concerns. Polyethylenimine (PEI) nanoparticles have been identified as promising gene carriers that induce gene transfection with high efficiency. However, the inherent toxicity of the material and non-selective delivery are the major concerns in applying these particles clinically. Here, a non-viral nanovector has been developed by PEGylation of DNA-complexing PEI in nanoparticles functionalized with an Alexa Fluor 647 near infrared fluorophore, and the chlorotoxin (CTX) peptide which binds specifically to many forms of cancer. With this nanovector, the potential toxicity to healthy cells is minimized by both the reduction of the toxicity of PEI with the biocompatible copolymer and the targeted delivery of the nanovector to cancer cells, as evaluated by viability studies. The nanovector demonstrated high levels of targeting specificity and gene transfection efficiency with both C6 glioma and DAOY medulloblastoma tumor cells. Significantly, with the CTX as the targeting ligand, the nanovector may serve as a widely applicable gene delivery system for a broad array of cancer types.
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Affiliation(s)
- Omid Veiseh
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195, USA
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398
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Huang X, Meng X, Tang F, Li L, Chen D, Liu H, Zhang Y, Ren J. Mesoporous magnetic hollow nanoparticles-protein carriers for lysosome escaping and cytosolic delivery. NANOTECHNOLOGY 2008; 19:445101. [PMID: 21832718 DOI: 10.1088/0957-4484/19/44/445101] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
It is important for a controlled release system to determine whether nanoparticles can penetrate cell membranes and deliver protein into the nuclear or cytosolic compartments of cells, and thus function as carriers. Here, we prepared different functionalized mesoporous magnetic hollow nanoparticles (MMHs) and chose bovine serum albumin (BSA) as a model protein to detect the intracellular trafficking of MMHs. The results showed that MMHs modified with amino groups (AMMHs) were efficient in protein loading and that the loading was dependent on the pH, temperature and ionic strength. Furthermore, we found that the AMMHs not only transported BSA into the cells but also released the BSA carried into the nuclear or cytosolic compartments of the cells. In addition, the nanoparticles were biocompatible, and the encapsulation of BSA in AMMHs did not affect their bioactivity. Taken together, AMMHs are excellent carriers for releasing protein into the cytosol and nucleus, and they have the potential to be used in a controlled release system.
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Affiliation(s)
- Xinglu Huang
- Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. Graduate School of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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399
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Sharma R, Lee JS, Bettencourt RC, Xiao C, Konieczny SF, Won YY. Effects of the incorporation of a hydrophobic middle block into a PEG-polycation diblock copolymer on the physicochemical and cell interaction properties of the polymer-DNA complexes. Biomacromolecules 2008; 9:3294-307. [PMID: 18942877 DOI: 10.1021/bm800876v] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
One-component homopolymers of cationic monomers (polycations) and diblock copolymers comprising poly(ethylene glycol) (PEG) and a polycation block have been the most widely used types of polymers for the formulation of polymer-based gene delivery systems. In this study, we incorporate a hydrophobic middle block into the conventional PEG-polycation architecture and investigate the effects of this hydrophobic modification on the physicochemical and cell-level biological properties of the polymer-DNA complexes that are relevant to gene delivery applications. The ABC-type triblock copolymer used in this study consists of (A) PEG, (B) hydrophobic poly( n-butyl acrylate) (PnBA), and (C) cationic poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) component polymers. The properties of the triblock copolymer/DNA complexes are compared with those of two other more conventional DNA carriers derived, respectively, using a PDMAEMA homopolymer and a PEG-PDMAEMA diblock copolymer that had comparable molecular weights for individual blocks. In aqueous solution, the PEG-PnBA-PDMAEMA polymer forms positively charged spherical micelles. The electrostatic complexation of these micelles with plasmid DNA molecules results in the formation of stable small-sized DNA particles that are coated with a micelle monolayer, as confirmed by agarose gel electrophoresis, dynamic light scattering (DLS), and cryogenic transmission electron microscopy (cryo-TEM). Proton nuclear magnetic resonance ( (1)H NMR) spectroscopy measurements indicate that the whole micelle-DNA assembly (named "micelleplex" for convenience) is shielded predominantly by the PEG chains. DLS and optical microscopy imaging measurements indicate that compared with PDMAEMA-DNA polyplexes, the micelleplexes have a significantly lower tendency to aggregate under physiological salt concentrations and show reduced interactions with negatively charged components in serum such as albumin and erythrocytes. While the micelleplexes are comparable to the PEG-PDMAEMA-based DNA polyplexes in terms of their stability against aggregation under high salt concentrations and in the presence of the albumin protein, they have a slightly higher tendency to interact with erythrocytes than the diblock copolymer polyplexes. Agarose gel electrophoresis measurements indicate that relative to the PEG-PDMAEMA polyplexes, the micelleplexes provide better protection of the encapsulated DNA from enzymatic degradation and also exhibit greater stability against disintegration induced by polyanionic additives; in these respects, the PDMAEMA homopolymer-based polyplexes show the best performance. In vitro studies in HeLa cells indicate that the PDMAEMA polyplexes show the highest gene transfection efficiency among the three different gene delivery systems. Between the micelleplexes and the PEG-PDMAEMA polyplexes, a higher gene transfection efficiency is observed with the latter system. All three formulations show comparable levels of cytotoxicity in HeLa cells.
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Affiliation(s)
- Rahul Sharma
- School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
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400
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Abbas AO, Donovan MD, Salem AK. Formulating poly(lactide-co-glycolide) particles for plasmid DNA delivery. J Pharm Sci 2008; 97:2448-61. [PMID: 17918737 DOI: 10.1002/jps.21215] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Biodegradable poly(lactide-co-glycolide) (PLGA) particles have shown significant potential for sustained and targeted delivery of several pharmaceutical agents, including plasmid DNA (pDNA). Here, we survey current approaches to PLGA particle preparation for pDNA delivery and discuss recent progress on optimizing formulation development.
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Affiliation(s)
- Aiman O Abbas
- Division of Pharmaceutics, College of Pharmacy, University of Iowa, S228 Pharmacy Building, 115 S Grand Avenue, Iowa City, Iowa 52242, USA
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