151
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Disulfide crosslinked polyion complex micelles encapsulating dendrimer phthalocyanine directed to improved efficiency of photodynamic therapy. J Control Release 2011; 155:449-57. [DOI: 10.1016/j.jconrel.2011.06.019] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 06/03/2011] [Accepted: 06/06/2011] [Indexed: 01/01/2023]
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152
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Du JZ, Du XJ, Mao CQ, Wang J. Tailor-Made Dual pH-Sensitive Polymer–Doxorubicin Nanoparticles for Efficient Anticancer Drug Delivery. J Am Chem Soc 2011; 133:17560-3. [DOI: 10.1021/ja207150n] [Citation(s) in RCA: 970] [Impact Index Per Article: 74.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jin-Zhi Du
- CAS Key Laboratory of Soft Matter Chemistry, and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Xiao-Jiao Du
- CAS Key Laboratory of Brain Function and Disease, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, P. R. China
| | - Cheng-Qiong Mao
- CAS Key Laboratory of Brain Function and Disease, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, P. R. China
| | - Jun Wang
- CAS Key Laboratory of Brain Function and Disease, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, P. R. China
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153
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154
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Truong NP, Jia Z, Burgess M, Payne L, McMillan NAJ, Monteiro MJ. Self-catalyzed degradable cationic polymer for release of DNA. Biomacromolecules 2011; 12:3540-8. [PMID: 21838265 DOI: 10.1021/bm2007423] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The controlled release of siRNA or DNA complexes from cationic polymers is an important parameter design in polymer-based delivery carriers. In this work, we use the self-catalyzed degradable poly(2-dimethylaminoethyl acrylate) (PDMAEA) to strongly bind, protect, and then release oligo DNA (a mimic for siRNA) without the need for a cellular or external trigger. This self-catalyzed hydrolysis process of PDMAEA forms poly(acrylic acid) and N,N'-dimethylamino ethyl ethanol, both of which have little or no toxicity to cells, and offers the advantage of little or no toxicity to off-target cells and tissues. We found that PDMAEA makes an ideal component of a delivery carrier by protecting the oligo DNA for a sufficiently long period of time to transfect most cells (80% transfection after 4 h) and then has the capacity to release the DNA inside the cells after ~10 h. The PDMAEA formed large nanoparticle complexes with oligo DNA of ~400 nm that protected the oligo DNA from DNase in serum. The nanoparticle complexes showed no toxicity for all molecular weights at a nitrogen/phosphorus (N/P) ratio of 10. Only the higher molecular weight polymers at very high N/P ratios of 200 showed significant levels of cytotoxicity. These attributes make PDMAEA a promising candidate as a component in the design of a gene delivery carrier without the concern about accumulated toxicity of nanoparticles in the human body after multiadministration, an issue that has become increasingly more important.
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Affiliation(s)
- Nghia P Truong
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane QLD 4072, Australia
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155
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Shi J, Johnson RN, Schellinger JG, Carlson PM, Pun SH. Reducible HPMA-co-oligolysine copolymers for nucleic acid delivery. Int J Pharm 2011; 427:113-22. [PMID: 21893178 DOI: 10.1016/j.ijpharm.2011.08.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 07/18/2011] [Accepted: 08/08/2011] [Indexed: 11/20/2022]
Abstract
Biodegradability can be incorporated into cationic polymers via use of disulfide linkages that are degraded in the reducing environment of the cell cytosol. In this work, N-(2-hydroxypropyl)methacrylamide (HPMA) and methacrylamido-functionalized oligo-l-lysine peptide monomers with either a non-reducible 6-aminohexanoic acid (AHX) linker or a reducible 3-[(2-aminoethyl)dithiol] propionic acid (AEDP) linker were copolymerized via reversible addition-fragmentation chain transfer (RAFT) polymerization. Both of the copolymers and a 1:1 (w/w) mixture of copolymers with reducible and non-reducible peptides were complexed with DNA to form polyplexes. The polyplexes were tested for salt stability, transfection efficiency, and cytotoxicity. The HPMA-oligolysine copolymer containing the reducible AEDP linkers was less efficient at transfection than the non-reducible polymer and was prone to flocculation in saline and serum-containing conditions, but was also not cytotoxic at charge ratios tested. Optimal transfection efficiency and toxicity were attained with mixed formulation of copolymers. Flow cytometry uptake studies indicated that blocking extracellular thiols did not restore transfection efficiency and that the decreased transfection of the reducible polyplex is therefore not primarily caused by extracellular polymer reduction by free thiols. The decrease in transfection efficiency of the reducible polymers could be partially mitigated by the addition of low concentrations of EDTA to prevent metal-catalyzed oxidation of reduced polymers.
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Affiliation(s)
- Julie Shi
- Department of Bioengineering, University of Washington, Seattle, WA, United States
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156
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Christie RJ, Miyata K, Matsumoto Y, Nomoto T, Menasco D, Lai TC, Pennisi M, Osada K, Fukushima S, Nishiyama N, Yamasaki Y, Kataoka K. Effect of Polymer Structure on Micelles Formed between siRNA and Cationic Block Copolymer Comprising Thiols and Amidines. Biomacromolecules 2011; 12:3174-85. [DOI: 10.1021/bm2006714] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- R. James Christie
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Kanjiro Miyata
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Japan
- Center for NanoBio Integration, The University of Tokyo, Japan
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Yu Matsumoto
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Japan
- Department of Otorhinolaryngology and Head and Neck Surgery, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Japan
- Department of Otorhinolaryngology and Head and Neck Surgery, Mitsui Memorial Hospital, Japan
| | - Takahiro Nomoto
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Daniel Menasco
- Center for Medical Systems Innovation Summer Internship Program, The University of Tokyo, Japan
| | - Tzai Chung Lai
- Center for Medical Systems Innovation Summer Internship Program, The University of Tokyo, Japan
| | - Matthew Pennisi
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Kensuke Osada
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Japan
- Center for NanoBio Integration, The University of Tokyo, Japan
| | - Shigeto Fukushima
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Japan
| | - Nobuhiro Nishiyama
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Japan
| | - Yuichi Yamasaki
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Japan
- Center for NanoBio Integration, The University of Tokyo, Japan
| | - Kazunori Kataoka
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Japan
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Japan
- Center for NanoBio Integration, The University of Tokyo, Japan
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Japan
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157
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CHEN J, WANG H, XU X, CHEN W, ZHANG X. PEPTIDES AND POLYPEPTIDES FOR GENE AND DRUG DELIVERY. ACTA POLYM SIN 2011. [DOI: 10.3724/sp.j.1105.2011.11100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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158
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Effect of integrin targeting and PEG shielding on polyplex micelle internalization studied by live-cell imaging. J Control Release 2011; 156:364-73. [PMID: 21843561 DOI: 10.1016/j.jconrel.2011.08.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 08/02/2011] [Indexed: 11/23/2022]
Abstract
α(v)β(3) and α(v)β(5) integrins are attractive target structures for cancer therapy as they are upregulated in tumor and tumor associated host cells and play a pivotal role for tumor growth and metastasis. Gene vectors such as polyplex micelles consisting of thiolated PEG-block-poly(lysine) copolymers complexed with plasmid DNA can be targeted to these specific integrins by equipment with a cyclic RGD peptide. In this study, we analyzed the effect of the RGD ligand on micelle endocytosis by comparing fluorescently labeled, targeted and untargeted micelles in live-cell imaging experiments with highly sensitive fluorescence microscopy and flow cytometry. Two micelle types with 12 kDa (PEG12) and 17 kDa (PEG17) PEG shell layers were examined to evaluate the influence of surface shielding on the internalization characteristics. Our results reveal three major effects: First, the RGD ligand accelerates the internalization of micelles into integrin expressing HeLa cells without changing the uptake pathway of the micelles. Both targeted as well as untargeted micelles are predominantly internalized via clathrin mediated endocytosis. Second, the PEG shielding of micelles has an important effect on their targeting specificity. At high PEG shielding selective endocytosis of integrin targeted micelles occurs, whereas at low PEG shielding targeted and untargeted micelles show comparable internalization. In addition, PEG17 RGD(+) micelles induce the highest reporter gene expression. Third, our data demonstrate a clear influence of the applied micelle dose on the internalization of integrin targeted micelles. We propose that PEG17 shielded micelles equipped with a cyclic RGD ligand are the favored system of choice for clinical therapy as they exhibit higher transgene expression, a higher specificity for integrin-dependent endocytosis compared to PEG12 shielded micelles, and are functional at low doses as well.
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159
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Wang T, Upponi JR, Torchilin VP. Design of multifunctional non-viral gene vectors to overcome physiological barriers: dilemmas and strategies. Int J Pharm 2011; 427:3-20. [PMID: 21798324 DOI: 10.1016/j.ijpharm.2011.07.013] [Citation(s) in RCA: 177] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 07/11/2011] [Accepted: 07/12/2011] [Indexed: 12/31/2022]
Abstract
Gene-based therapeutics hold great promise for medical advancement and have been used to treat various human diseases with mixed success. However, their therapeutic application in vivo is limited due largely to several physiological barriers. The design of non-viral gene vectors with the ability to overcome delivery obstacles is currently under extensive investigation. These efforts have placed an emphasis on the development of multifunctional vectors able to execute multiple tasks to simultaneously overcome both extracellular and intracellular obstacles. However, the assembly of these different functionalities into a single system to create multifunctional gene vectors faces many conflicts that largely limit the safe and efficient application of lipoplexes and polyplexes in a systemic delivery. In the review, we have described the dilemmas inherent in the design of a viable, non-viral gene vector equipped with multiple functionalities. The strategies directed towards individual delivery barriers are first summarized, followed by a focus on the design of so-called smart multifunctional vectors with the capability to overcome the delivery difficulties of gene medicines, including the so-called the "polycation dilemma", the "PEG dilemma" and the "package and release dilemma".
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Affiliation(s)
- Tao Wang
- Center for Pharmaceutical Biotechnology and Nanomedicine, 312 Mugar Life Sciences Building, 360 Huntington Avenue, Northeastern University, Boston, MA 02115, USA
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160
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Invading target cells: multifunctional polymer conjugates as therapeutic nucleic acid carriers. Front Chem Sci Eng 2011. [DOI: 10.1007/s11705-011-1203-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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161
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Matsuura K, Tochio K, Watanabe K, Kimizuka N. Controlled Release of Guest Molecules from Spherical Assembly of Trigonal Gultathione by Disulfide Recombination. CHEM LETT 2011. [DOI: 10.1246/cl.2011.711] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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162
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Li Y, Xiao K, Luo J, Xiao W, Lee JS, Gonik AM, Kato J, Dong TA, Lam KS. Well-defined, reversible disulfide cross-linked micelles for on-demand paclitaxel delivery. Biomaterials 2011; 32:6633-45. [PMID: 21658763 DOI: 10.1016/j.biomaterials.2011.05.050] [Citation(s) in RCA: 234] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 05/16/2011] [Indexed: 10/18/2022]
Abstract
To minimize premature release of drugs from their carriers during circulation in the blood stream, we have recently developed reversible disulfide cross-linked micelles (DCMs) that can be triggered to release drug at the tumor site or in cancer cells. We designed and synthesized thiolated linear-dendritic polymers (telodendrimers) by introducing cysteines to the dendritic oligo-lysine backbone of our previously reported telodendrimers comprised of linear polyethylene glycol (PEG) and a dendritic cluster of cholic acids. Reversibly cross-linked micelles were then prepared by the oxidization of thiol groups to disulfide bond in the core of micelles after the self-assembly of thiolated telodendrimers. The DCMs were spherical with a uniform size of 28 nm, and were able to load paclitaxel (PTX) in the core with superior loading capacity up to 35.5% (w/w, drug/micelle). Cross-linking of the micelles within the core reduced their apparent critical micelle concentration and greatly enhanced their stability in non-reductive physiological conditions as well as severe micelle-disrupting conditions. The release of PTX from the DCMs was significantly slower than that from non-cross-linked micelles (NCMs), but can be gradually facilitated by increasing the concentration of reducing agent (glutathione) to an intracellular reductive level. The DCMs demonstrated a longer in vivo blood circulation time, less hemolytic activities, and superior toxicity profiles in nude mice, when compared to NCMs. DCMs were found to be able to preferentially accumulate at the tumor site in nude mice bearing SKOV-3 ovarian cancer xenograft. We also demonstrated that the disulfide cross-linked micellar formulation of PTX (PTX-DCMs) was more efficacious than both free drug and the non-cross-linked formulation of PTX at equivalent doses of PTX in the ovarian cancer xenograft mouse model. The anti-tumor effect of PTX-DCMs can be further enhanced by triggering the release of PTX on-demand by the administration of the FDA approved reducing agent, N-acetylcysteine, after PTX-DCMs have reached the tumor site.
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Affiliation(s)
- Yuanpei Li
- Department of Biochemistry & Molecular Medicine, UC Davis Cancer Center, University of California Davis, Sacramento, CA 95817, USA.
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163
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Johnston AP, Such GK, Ng SL, Caruso F. Challenges facing colloidal delivery systems: From synthesis to the clinic. Curr Opin Colloid Interface Sci 2011. [DOI: 10.1016/j.cocis.2010.11.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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164
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Xiong XB, Falamarzian A, Garg SM, Lavasanifar A. Engineering of amphiphilic block copolymers for polymeric micellar drug and gene delivery. J Control Release 2011; 155:248-61. [PMID: 21621570 DOI: 10.1016/j.jconrel.2011.04.028] [Citation(s) in RCA: 178] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Accepted: 04/27/2011] [Indexed: 12/22/2022]
Abstract
The use of nano-delivery systems formed through assembly of synthetic amphiphilic block copolymers (ABCs) in experimental medicine and pharmaceutical sciences is experiencing rapid development. This rapid development is driven by a crucial need in improving the performance of existing therapeutic agents, as well as the necessity for the development of advanced delivery systems for complex new entities such as genes, proteins and other cellular components. The flexibility in the construction of appropriate carriers for the delivery requirements of these complex new "drugs" offered by versatile polymer chemistry provides an undeniable advantage for polymer based nano-delivery systems compared to other colloids in this regard. With seven formulations already in different stages of clinical trials, polymeric micelles are in the front line of drug development among different ABC-based nano-carriers. The success in rapid advancement of polymeric micelles from bench to bedside is owed to the rational engineering of core/shell structure so that the polymeric micellar carrier can meet the requirements for optimum delivery of specific drug(s) in certain disease condition(s). The engineering efforts in this regard have mostly been aimed at providing efficient drug loading, micellar stabilization, and sustained and/or site specific drug release. The objective of this review is to provide an update on different engineering strategies employed to achieve optimum polymeric micellar formulations.
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Affiliation(s)
- Xiao-Bing Xiong
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta T6G 2N8, Canada
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165
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Truong NP, Jia Z, Burges M, McMillan NAJ, Monteiro MJ. Self-Catalyzed Degradation of Linear Cationic Poly(2-dimethylaminoethyl acrylate) in Water. Biomacromolecules 2011; 12:1876-82. [DOI: 10.1021/bm200219e] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Nghia P. Truong
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane QLD 4072, Australia
| | - Zhongfan Jia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane QLD 4072, Australia
| | - Melinda Burges
- Diamantina Institute, The University of Queensland, Brisbane QLD 4072, Australia
| | - Nigel A. J. McMillan
- Diamantina Institute, The University of Queensland, Brisbane QLD 4072, Australia
| | - Michael J. Monteiro
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane QLD 4072, Australia
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166
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Zhang XX, Prata CAH, Berlin JA, McIntosh TJ, Barthelemy P, Grinstaff MW. Synthesis, characterization, and in vitro transfection activity of charge-reversal amphiphiles for DNA delivery. Bioconjug Chem 2011; 22:690-9. [PMID: 21456532 DOI: 10.1021/bc1004526] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A series of charge-reversal lipids were synthesized that possess varying chain lengths and end functionalities. These lipids were designed to bind and then release DNA based on a change in electrostatic interaction with DNA. Specifically, a cleavable ester linkage is located at the ends of the hydrocarbon chains. The DNA release from the amphiphile was tuned by altering the length and position of the ester linkage in the hydrophobic chains of the lipids through the preparation of five new amphiphiles. The amphiphiles and corresponding lipoplexes were characterized by DSC, TEM, and X-ray, as well as evaluated for DNA binding and DNA transfection. For one specific charge-reversal lipid, stable lipoplexes of approximately 550 nm were formed, and with this amphiphile, effective in vitro DNA transfection activities was observed.
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Affiliation(s)
- Xiao-Xiang Zhang
- Departments of Biomedical Engineering and Chemistry, Boston University , Boston, Massachusetts 02215, United States
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167
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Zhang XX, Allen PG, Grinstaff M. Macropinocytosis is the major pathway responsible for DNA transfection in CHO cells by a charge-reversal amphiphile. Mol Pharm 2011; 8:758-66. [PMID: 21449536 DOI: 10.1021/mp100366h] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The cellular uptake of a functional charge-reversal amphiphile:DNA lipoplex is described. First, pharmacological inhibitors were applied to block different endocytosis pathways. By examining the resulting transfection activities, it was found that endocytosis was the pathway leading to transfection in Chinese hamster ovary (CHO) cells. When the specific pathway of macropinocytosis was inhibited, β-galactosidase expression was significantly depleted (90%); meanwhile the inhibition of clathrin-mediated pathway only brought a 30% decrease in expression; and the inhibition of caveolae-mediated pathway did not affect expression. Furthermore, a transfection kinetics study revealed that the cellular uptake responsible for gene expression was a slower process compared to clathrin-mediated endocytosis, consistent with fluid-phase uptake compared to receptor-mediated uptake. Next, a fluorescence colocalization study was used to visualize the DNA lipoplex uptake pathways. The colocalization of the DNA lipoplex and Cascade Blue, a fluid-phase uptake marker, was observed. Meanwhile, the colocalization of the DNA lipoplex and transferrin, a clathrin-mediated endocytosis marker, was also seen. However, no colocalization was observed with the endosome/lysosome marker Lysotracker. Our results indicate that macropinocytosis, not the commonly seen clathrin-mediated endocytosis for cationic lipids, is the major pathway leading to gene transfection in CHO cells for this charge-reversal amphiphile.
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Affiliation(s)
- Xiao-Xiang Zhang
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, USA
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168
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169
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Kim TI, Rothmund T, Kissel T, Kim SW. Bioreducible polymers with cell penetrating and endosome buffering functionality for gene delivery systems. J Control Release 2011; 152:110-9. [PMID: 21352876 DOI: 10.1016/j.jconrel.2011.02.013] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 02/08/2011] [Accepted: 02/11/2011] [Indexed: 10/18/2022]
Abstract
Bioreducible cationic polymers (p(DAH(a)-R/API(b))s) composed of different ratios (a:b=2:1, 1:1, 1:2) between arginine-grafted diaminohexane (DAH-R) (cell penetrating functionality) and 1-(3-aminopropyl) imidazole (API) (endosome buffering functionality) monomers were synthesized by Michael reaction of N,N'-cystaminebisacrylamide (CBA) with them, in order to study the effect of endosome buffering moiety on arginine-grafted bioreducible polymeric gene carriers. Several experiments displayed a distinct correlation between monomer composition ratios of p(DAH-R/API)s and the polymer features. Increased endosome buffering capacities proportional to API portions was evaluated for p(DAH-R/API)s due to the imidazole group (pKa=6) of API. Increased portions of API non-ionized at physiological pH and resultant decrease of arginine residues also reduced cytotoxicities of the polymers due to less interaction of cellular compartments with less positively charged polymers but decreased pDNA condensing abilities, Zeta-potential values, cellular uptakes of polyplexes, and finally transfection efficiencies as well. Thus, the predominance of arginine residues over endosome buffering moieties was revealed regarding efficient gene delivery for p(DAH-R/API)s. From transfection results with chloroquine or nigericin, it can be deduced that the endosomal escape of p(DAH-R/API) polyplexes occurs by direct endosome membrane penetration of arginine moieties as well as endosome buffering of the polymers after cellular uptake, which emphasizes the importance of arginine moieties for polymeric gene delivery systems.
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Affiliation(s)
- Tae-il Kim
- Department of Biosystems and Biomaterials Science and Engineering, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
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170
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Liu C, Zhang N. Nanoparticles in Gene Therapy. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 104:509-62. [DOI: 10.1016/b978-0-12-416020-0.00013-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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171
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Sun L, Liu W, Dong CM. Bioreducible micelles and hydrogels with tunable properties from multi-armed biodegradable copolymers. Chem Commun (Camb) 2011; 47:11282-4. [DOI: 10.1039/c1cc14663g] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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172
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Cai XJ, Dong HQ, Xia WJ, Wen HY, Li XQ, Yu JH, Li YY, Shi DL. Glutathione-mediated shedding of PEG layers based on disulfide-linked catiomers for DNA delivery. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11693b] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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173
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Jiang X, Liu J, Xu L, Zhuo R. Disulfide-Containing Hyperbranched Polyethylenimine Derivatives via Click Chemistry for Nonviral Gene Delivery. MACROMOL CHEM PHYS 2010. [DOI: 10.1002/macp.201000448] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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174
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Ding J, Xiao C, Tang Z, Zhuang X, Chen X. Highly Efficient “Grafting From” an α-Helical Polypeptide Backbone by Atom Transfer Radical Polymerization. Macromol Biosci 2010; 11:192-8. [DOI: 10.1002/mabi.201000238] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 08/23/2010] [Indexed: 11/06/2022]
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175
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Numata K, Kaplan DL. Silk-based gene carriers with cell membrane destabilizing peptides. Biomacromolecules 2010; 11:3189-95. [PMID: 20942485 DOI: 10.1021/bm101055m] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Complexes of recombinant silk-polylysine molecules with ppTG1 peptide, a lysine-rich cell membrane destabilizing peptide to bind plasmid DNA (pDNA), are designed as less-cytotoxic and highly efficient gene carriers. The peptide destabilizes the cell membrane and promotes gene transfer. Our particular interest is in how ppTG1 enhances transfection efficiency of the silk-based delivery system into human cells. Genetically engineered silk proteins containing polylysine and the monomeric and dimeric ppTG1 sequences are synthesized in Escherichia coli , followed by transfection experiments. The pDNA complexes of silk-polylysine-ppTG1 dimer recombinant proteins prepared at an N/P 2 (the ratio of number of amines/phosphates from pDNA) shows the highest transfection efficiency into human embryonic kidney (HEK) cells, the level of which is comparable to the transfection reagent Lipofectamine 2000. The assemblies show a globular morphology with an average hydrodynamic diameter of 99 nm and almost no β-sheet structure. Additionally, the silk-based pDNA complexes demonstrate excellent DNase resistance as well as efficient release of the pDNA by enzymes that degrade silk proteins. Also, comparison with β-sheet induced silk-based pDNA complexes indicates that the β-sheet structure content of the silk sequence of the pDNA complexes controls the enzymatic degradation rate of the complexes and, hence, can regulate the release profile of genes from the complexes. The bioengineered silk-based gene delivery vehicles containing cell membrane destabilizing peptides are therefore concluded to have potential for a less-toxic and controlled-release gene delivery system.
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Affiliation(s)
- Keiji Numata
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
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176
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Drake CR, Aissaoui A, Argyros O, Serginson JM, Monnery BD, Thanou M, Steinke JHG, Miller AD. Bioresponsive small molecule polyamines as noncytotoxic alternative to polyethylenimine. Mol Pharm 2010; 7:2040-55. [PMID: 20929266 DOI: 10.1021/mp9002249] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Nonviral gene therapy continues to require novel synthetic vectors to deliver therapeutic nucleic acids effectively and safely. The majority of synthetic nonviral vectors employed in clinical trials to date have been cationic liposomes; however, cationic polymers are attracting increasing attention. One of the few cationic polymers to enter clinical trials has been polyethylenimine (PEI); however, doubts remain over its cytotoxicity, and in addition it displays lower levels of transfection than viral systems. Herein, we report on the development of a series of small molecule analogues of PEI that are bioresponsive to the presence of pDNA, forming poly(disulfide)s that are capable of efficacious transfection with no associated toxicity. The most effective small molecule developed, a cyclic disulfide based upon a spermine backbone, is shown to form very well-defined polyplexes (100-200 nm in diameter) that mediate murine lung transfection in vivo to within an order of magnitude of in vivo jetPEI, and at the same time display a much improved cytotoxicity profile.
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Affiliation(s)
- Christopher R Drake
- Department of Chemistry, Imperial College London, Imperial College Genetic Therapies Centre, Flowers Building, Armstrong Road, London SW7 2AZ, UK
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177
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Liu J, Jiang X, Xu L, Wang X, Hennink WE, Zhuo R. Novel Reduction-Responsive Cross-Linked Polyethylenimine Derivatives by Click Chemistry for Nonviral Gene Delivery. Bioconjug Chem 2010; 21:1827-35. [DOI: 10.1021/bc100191r] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jia Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, and Modern Virology Center, College of Life Sciences, Wuhan University, Wuhan 430072, P. R. China, and Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Science (UIPS), Utrecht University, P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, and Modern Virology Center, College of Life Sciences, Wuhan University, Wuhan 430072, P. R. China, and Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Science (UIPS), Utrecht University, P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Li Xu
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, and Modern Virology Center, College of Life Sciences, Wuhan University, Wuhan 430072, P. R. China, and Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Science (UIPS), Utrecht University, P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Xianmiao Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, and Modern Virology Center, College of Life Sciences, Wuhan University, Wuhan 430072, P. R. China, and Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Science (UIPS), Utrecht University, P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Wim E. Hennink
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, and Modern Virology Center, College of Life Sciences, Wuhan University, Wuhan 430072, P. R. China, and Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Science (UIPS), Utrecht University, P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Renxi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, and Modern Virology Center, College of Life Sciences, Wuhan University, Wuhan 430072, P. R. China, and Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Science (UIPS), Utrecht University, P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
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178
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179
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Kim JO, Sahay G, Kabanov AV, Bronich TK. Polymeric micelles with ionic cores containing biodegradable cross-links for delivery of chemotherapeutic agents. Biomacromolecules 2010; 11:919-26. [PMID: 20307096 DOI: 10.1021/bm9013364] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel functional polymeric nanocarriers with ionic cores containing biodegradable cross-links were developed for delivery of chemotherapeutic agents. Block ionomer complexes (BIC) of poly(ethylene oxide)-b-poly(methacylic acid) (PEO-b-PMA) and divalent metal cations (Ca(2+)) were utilized as templates. Disulfide bonds were introduced into the ionic cores by using cystamine as a biodegradable cross-linker. The resulting cross-linked micelles with disulfide bonds represented soft, hydrogel-like nanospheres and demonstrated a time-dependent degradation in the conditions mimicking the intracellular reducing environment. The ionic character of the cores allowed to achieve a very high level of doxorubicin (DOX) loading (50% w/w) into the cross-linked micelles. DOX-loaded degradable cross-linked micelles exhibited more potent cytotoxicity against human A2780 ovarian carcinoma cells as compared to micellar formulations without disulfide linkages. These novel biodegradable cross-linked micelles are expected to be attractive candidates for delivery of anticancer drugs.
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Affiliation(s)
- Jong Oh Kim
- Department of Pharmaceutical Sciences and Center for Drug Delivery and Nanomedicine, College of Pharmacy, University of Nebraska Medical Center, 985830 Nebraska Medical Center, Omaha, Nebraska 68198-5830, USA
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180
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Nam HY, McGinn A, Kim PH, Kim SW, Bull DA. Primary cardiomyocyte-targeted bioreducible polymer for efficient gene delivery to the myocardium. Biomaterials 2010; 31:8081-7. [PMID: 20674007 DOI: 10.1016/j.biomaterials.2010.07.025] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Accepted: 07/04/2010] [Indexed: 12/31/2022]
Abstract
A cardiomyocyte-targeted Fas siRNA delivery system was developed using primary cardiomyocyte (PCM) specific peptide-modified polymers with high transfection efficiency and low cytotoxicity. Primary cardiomyocyte (PCM) specific peptide, selected by phage display, was conjugated to bioreducible poly(cystamine bisacrylamide-diaminohexane, CBA-DAH) (PCD). The specificity of the PCM-modified polymer to cardiomyocytes was confirmed by competition study with free PCM ligand and by delivery to non-cardiomyocyte NIH 3T3 fibroblasts. The cellular binding and uptake of the PCM-polymer/pDNA polyplex was inhibited by addition of free PCM peptide. The impact of PCM conjugation on cellular uptake and transfection efficiency was greater in H9C2 rat cardiomyocytes than in NIH 3T3 cells. Fas siRNA/PCM-polymer polyplexes exhibited significant Fas gene silencing in rat cardiomyocytes under hypoxic conditions, leading to inhibition of cardiomyocyte apoptosis. These findings demonstrate the utility of the addition of a primary cardiomyocyte (PCM) specific peptide modification to a bioreducible polymer for targeted delivery of Fas siRNA to inhibit cardiomyocyte apoptosis.
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Affiliation(s)
- Hye Y Nam
- Center for Controlled Chemical Delivery (CCCD), Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA
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181
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Oba M, Vachutinsky Y, Miyata K, Kano MR, Ikeda S, Nishiyama N, Itaka K, Miyazono K, Koyama H, Kataoka K. Antiangiogenic gene therapy of solid tumor by systemic injection of polyplex micelles loading plasmid DNA encoding soluble flt-1. Mol Pharm 2010; 7:501-9. [PMID: 20178335 DOI: 10.1021/mp9002317] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this study, a polyplex micelle was developed as a potential formulation for antiangiogenic gene therapy of subcutaneous pancreatic tumor model. Poly(ethylene glycol)-poly(l-lysine) block copolymers (PEG-PLys) with thiol groups in the side chain of the PLys segment were synthesized and applied for preparation of disulfide cross-linked polyplex micelles through ion complexation with plasmid DNA (pDNA) encoding the soluble form of vascular endothelial growth factor (VEGF) receptor-1 (sFlt-1), which is a potent antiangiogenic molecule. Antitumor activity and gene expression of polyplex micelles with various cross-linking rates were evaluated in mice bearing subcutaneously xenografted BxPC3 cell line, derived from human pancreatic adenocarcinoma, and polyplex micelles with optimal cross-linking rate achieved effective suppression of tumor growth. Significant gene expression of this micelle was detected selectively in tumor tissue, and its antiangiogenic effect was confirmed by decreased vascular density inside the tumor. Therefore, the disulfide cross-linked polyplex micelle loading sFlt-1 pDNA has a great potential for antiangiogenic therapy against subcutaneous pancreatic tumor model by systemic application.
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Affiliation(s)
- Makoto Oba
- Department of Clinical Vascular Regeneration, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan
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182
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Jiang X, Zheng Y, Chen HH, Leong KW, Wang TH, Mao HQ. Dual-sensitive micellar nanoparticles regulate DNA unpacking and enhance gene-delivery efficiency. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:2556-2560. [PMID: 20440698 PMCID: PMC3000804 DOI: 10.1002/adma.200903933] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Xuan Jiang
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218 (USA)
| | - Yiran Zheng
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218 (USA)
| | - Hunter H. Chen
- Department of Biomedical Engineering, Johns Hopkins University, School of Medicine, 720 Rutland Avenue, Baltimore, MD 21231 (USA)
| | - Kam W. Leong
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708 (USA)
| | - Tza-Huei Wang
- Department of Biomedical Engineering, Johns Hopkins University, School of Medicine, 720 Rutland Avenue, Baltimore, MD 21231 (USA), Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218 (USA)
| | - Hai-Quan Mao
- Department of Materials Science and Engineering and Whitaker Biomedical Engineering Institute, Johns Hopkins University, 206 Maryland Hall, Baltimore, MD 21218 (USA)
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183
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Khondee S, Yakovleva T, Berkland C. Low charge polyvinylamine nanogels offer sustained, low-level gene expression. J Appl Polym Sci 2010. [DOI: 10.1002/app.32460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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184
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Miyata K, Gouda N, Takemoto H, Oba M, Lee Y, Koyama H, Yamasaki Y, Itaka K, Nishiyama N, Kataoka K. Enhanced transfection with silica-coated polyplexes loading plasmid DNA. Biomaterials 2010; 31:4764-70. [DOI: 10.1016/j.biomaterials.2010.02.033] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Accepted: 02/11/2010] [Indexed: 12/30/2022]
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185
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Sanjoh M, Hiki S, Lee Y, Oba M, Miyata K, Ishii T, Kataoka K. pDNA/poly(L-lysine) Polyplexes Functionalized with a pH-Sensitive Charge-Conversional Poly(aspartamide) Derivative for Controlled Gene Delivery to Human Umbilical Vein Endothelial Cells. Macromol Rapid Commun 2010; 31:1181-6. [PMID: 21590873 DOI: 10.1002/marc.201000056] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 03/03/2010] [Indexed: 01/13/2023]
Abstract
An efficient endosome-escaping function was integrated into the polyplex of plasmid DNA (pDNA) with poly(L-lysine) (PLys) to improve its gene transfection efficiency through electrostatic coating with charge-conversional polymer (CCP). CCP showed charge-conversional function responding to endosomal pH, leading to the release of pDNA/PLys polyplex into the cytoplasm. The cells took up the intact CCP-integrated ternary polyplex, which exerted appreciably higher transfection efficiency with lower cytotoxicity than pDNA/PLys polyplex against human umbilical vein endothelial cells (HUVECs). This is consistent with the facilitated endosomal escape of the CCP-integrated ternary polyplex compared to the pDNA/PLys polyplex as directly observed with confocal laser-scanning microscopy.
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Affiliation(s)
- Mai Sanjoh
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Japan
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186
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Sun W, Davis PB. Reducible DNA nanoparticles enhance in vitro gene transfer via an extracellular mechanism. J Control Release 2010; 146:118-27. [PMID: 20438780 DOI: 10.1016/j.jconrel.2010.04.031] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 04/23/2010] [Accepted: 04/27/2010] [Indexed: 11/18/2022]
Abstract
We developed polylysine based DNA nanoparticles (DNA NPs) that contain disulfide linkage in the carrier and demonstrated that this reducible DNA NP enhances in vitro gene transfer via an extracellular mechanism. Polylysine was conjugated through an N-terminal cysteine to a polyethylene glycol chain (PEG) by either a disulfide bond (SS) or a thioether bond (CS), and the resulting PEG-peptide conjugates were used to compact plasmid DNA into reducible SS-DNA NPs or non-reducible CS-DNA NPs with identical physical properties. SS-DNA NPs mediated more than 10-fold higher in vitro gene transfer. Others have suggested that disulfide bonds in synthetic gene carriers undergo cleavage in the reducing environment inside the cell, allowing increased intracellular DNA release. In this study, however, both higher cellular uptake of SS-DNA NPs and inhibition of SS-DNA NP mediated in vitro gene transfer by blocking extracellular free thiols suggested an extracellular mechanism. DePEGylation of SS-DNA NPs by extracellular thiols caused aggregation which might lead to higher cellular uptake and higher transgene expression. A series of SS-DNA NPs prepared with stabilized disulfide bonds survived the extracellular environment without aggregation but lost the superior gene transfer ability, indicating that, in our system, intracellular mechanisms are not involved. These results provided further insight into the mechanisms of in vitro gene transfer enhancement by introducing reducible linkages, contributing to the rational design of more efficient non-viral gene delivery systems.
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Affiliation(s)
- Wenchao Sun
- Department of Biochemistry, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA
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187
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Blacklock J, Sievers TK, Handa H, You YZ, Oupický D, Mao G, Möhwald H. Cross-linked bioreducible layer-by-layer films for increased cell adhesion and transgene expression. J Phys Chem B 2010; 114:5283-91. [PMID: 20369813 PMCID: PMC2861295 DOI: 10.1021/jp100486h] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The effect of cross-linking layer-by-layer (LbL) films consisting of bioreducible poly(2-dimethylaminoethyl methacrylate) (rPDMAEMA) and DNA is examined with regard to rigidity, biodegradability, cell adhesion, and transfection activity using 1,5-diiodopentane (DIP) cross-linker. DIP chemically reacts with the tertiary amines of rPDMAEMA, altering the chemical composition of these LbL films. The result is a change in surface morphology, film swelling behavior, and film rigidity, measured with AFM and ellipsometry. It is found that the apparent Young's modulus is increased more than 4 times its original value upon cross-linking. Cross-linking mass is additionally confirmed with a quartz crystal microbalance with dissipation (QCM-D). Comprehensive analyses of these experimental values were investigated to calculate the degree of cross-linking using the rubber elasticity theory and the Flory-Rehner theory. Additionally, the Flory-Huggins parameter, chi, was calculated. Good agreement in the two methods yields a cross-linking density of approximately 0.82 mmol/cm(3). The Flory-Huggins parameter increased upon cross-linking from 1.07 to 1.2, indicating increased hydrophobicity of the network and formation of bulk water droplets within the films. In addition, the effects of cross-linking on film disassembly by 1,4-dithiothreitol (DTT) are found to be insignificant despite the alteration in film rigidity. Mouse fibroblast cells and smooth muscle cells are used to study the effect of cross-linking on cell adhesion and cell transfection activity. In vitro transfection activity up to seven days is quantified using secreted alkaline phosphatase (SEAP) DNA. Film cross-linking is found to enhance cell adhesion and prolong the duration of cellular transfection. These results contribute to the development of bioreducible polymer coatings for localized gene delivery.
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Affiliation(s)
- Jenifer Blacklock
- Department of Biomedical Engineering, Wayne State University, Detroit, Michigan 48202, USA.
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188
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Xue YN, Liu M, Peng L, Huang SW, Zhuo RX. Improving Gene Delivery Efficiency of Bioreducible Poly(amidoamine)s via Grafting with Dendritic Poly(amidoamine)s. Macromol Biosci 2010; 10:404-14. [DOI: 10.1002/mabi.200900300] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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189
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Dewa T, Asai T, Tsunoda Y, Kato K, Baba D, Uchida M, Sumino A, Niwata K, Umemoto T, Iida K, Oku N, Nango M. Liposomal Polyamine−Dialkyl Phosphate Conjugates as Effective Gene Carriers: Chemical Structure, Morphology, and Gene Transfer Activity. Bioconjug Chem 2010; 21:844-52. [DOI: 10.1021/bc900376y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Takehisa Dewa
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Tomohiro Asai
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Yuka Tsunoda
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Kiyoshi Kato
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Daisuke Baba
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Misa Uchida
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Ayumi Sumino
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Kayoko Niwata
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Takuya Umemoto
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Kouji Iida
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Naoto Oku
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
| | - Mamoru Nango
- Department of Life and Materials Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan, Department of Medical Biochemistry and Global COE, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526 Japan, and Nagoya Municipal Industrial Research Institute, 3-4-41 Rokuban-cho, Atsuta-ku, Nagoya 456-0058 Japan
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190
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Ishihara T, Mizushima T. Techniques for efficient entrapment of pharmaceuticals in biodegradable solid micro/nanoparticles. Expert Opin Drug Deliv 2010; 7:565-75. [DOI: 10.1517/17425241003713486] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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191
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Li ZT, Guo J, Zhang JS, Zhao YP, Lv L, Ding C, Zhang XZ. Chitosan-graft-polyethylenimine with improved properties as a potential gene vector. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2009.11.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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192
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Poly(ethylene glycol)-block-Poly(glycidyl methacrylate) with Oligoamine Side Chains as Efficient Gene Vectors. Macromol Biosci 2010; 10:183-91. [DOI: 10.1002/mabi.200900183] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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193
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Vachutinsky Y, Oba M, Miyata K, Hiki S, Kano MR, Nishiyama N, Koyama H, Miyazono K, Kataoka K. Antiangiogenic gene therapy of experimental pancreatic tumor by sFlt-1 plasmid DNA carried by RGD-modified crosslinked polyplex micelles. J Control Release 2010; 149:51-7. [PMID: 20138936 DOI: 10.1016/j.jconrel.2010.02.002] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Revised: 12/21/2009] [Accepted: 02/01/2010] [Indexed: 01/06/2023]
Abstract
Disulfide crosslinked polyplex micelles with RGD peptides were formed through ion complexation of thiolated c(RGDfK)-poly(ethylene glycol)-block-poly(L-lysine) (c(RGDfK)-PEG-P(Lys-SH)) and plasmid DNA encoding sFlt-1 and tested for their therapeutic effect in BxPC3 pancreatic adenocarcinoma tumor bearing mice. These micelles, systemically injected, demonstrated significant inhibition of tumor growth up to day 18, as a result of the antiangiogenic effect that was confirmed by vascular density measurements. Significant therapeutic activity of the 15% crosslinked micelle (c(RGDfK)-PEG-P(Lys-SH15)) was achieved by combined effect of increased tumor accumulation, interaction with endothelial cells and enhanced intracellular uptake through receptor-mediated endocytosis. These results suggest that RGD targeted crosslinked polyplex micelles can be effective plasmid DNA carriers for antiangiogenic gene therapy.
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Affiliation(s)
- Yelena Vachutinsky
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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194
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Christie RJ, Nishiyama N, Kataoka K. Delivering the code: polyplex carriers for deoxyribonucleic acid and ribonucleic acid interference therapies. Endocrinology 2010; 151:466-73. [PMID: 20032060 DOI: 10.1210/en.2009-1045] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Nucleic acid-based therapies offer great potential for treatment of a variety of diseases including cancer by modulating protein expression with DNA or small interfering RNA. However, realization of their full therapeutic potential is currently limited due to an inability to reach the target site in an active form. Identification of delivery barriers such as stability in circulation, resistance to degradation and entrapment in subcellular vesicles has led to development of sophisticated multifunctional synthetic polymers for forming ionic complexes with nucleic acids and also providing performance-enhancing features. The most promising designs comprise features to help increase stability in circulation and also contain functionality to aid in endosome escape of nucleic acid cargo after cellular internalization.
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Affiliation(s)
- R James Christie
- Department of Materials Engineering, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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195
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Cabral H, Kataoka K. Multifunctional nanoassemblies of block copolymers for future cancer therapy. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2010; 11:014109. [PMID: 27877324 PMCID: PMC5090551 DOI: 10.1088/1468-6996/11/1/014109] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Revised: 04/16/2010] [Accepted: 02/28/2010] [Indexed: 05/29/2023]
Abstract
Nanoassemblies from amphiphilic block copolymers are promising nanomedicine platforms for cancer diagnosis and therapy due to their relatively small size, high loading capacity of drugs, controlled drug release, in vivo stability and prolonged blood circulation. Recent clinical trials with self-assembled polymeric micelles incorporating anticancer drugs have shown improved antitumor activity and decreased side effects encouraging the further development of nanoassemblies for drug delivery. This review summarizes recent approaches considering stimuli-responsive, multifunctionality and more advanced architectures, such as vesicles or worm-like micelles, for tumor-specific drug and gene delivery.
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Affiliation(s)
- Horacio Cabral
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo. 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Center for NanoBio Integration, The University of Tokyo. 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazunori Kataoka
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo. 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Center for NanoBio Integration, The University of Tokyo. 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo. 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo. 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
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196
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Russ V, Fröhlich T, Li Y, Halama A, Ogris M, Wagner E. Improvedin vivogene transfer into tumor tissue by stabilization of pseudodendritic oligoethylenimine-based polyplexes. J Gene Med 2010; 12:180-93. [DOI: 10.1002/jgm.1430] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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197
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Soliman M, Allen S, Davies MC, Alexander C. Responsive polyelectrolyte complexes for triggered release of nucleic acid therapeutics. Chem Commun (Camb) 2010; 46:5421-33. [DOI: 10.1039/c0cc00794c] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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198
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Iha RK, Wooley KL, Nyström AM, Burke DJ, Kade MJ, Hawker CJ. Applications of orthogonal "click" chemistries in the synthesis of functional soft materials. Chem Rev 2009; 109:5620-86. [PMID: 19905010 PMCID: PMC3165017 DOI: 10.1021/cr900138t] [Citation(s) in RCA: 1172] [Impact Index Per Article: 78.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rhiannon K. Iha
- Department of Chemistry, Department of Radiology, Washington University in Saint Louis, Saint Louis, Missouri 63130, USA
| | - Karen L. Wooley
- Department of Chemistry, Department of Radiology, Washington University in Saint Louis, Saint Louis, Missouri 63130, USA
- Department of Chemistry, Texas A&M University, College Station, Texas 77842
| | - Andreas M. Nyström
- Cancer Center Karolinska, Department of Oncology-Pathology CCK, R8:03 Karolinska Hospital and Institute, SE-171 76 Stockholm, Sweden
| | - Daniel J. Burke
- Department of Chemistry and Biochemistry, Department of Materials, and Materials Research Laboratory, University of California, Santa Barbara, California 93106, USA
| | - Matthew J. Kade
- Department of Chemistry and Biochemistry, Department of Materials, and Materials Research Laboratory, University of California, Santa Barbara, California 93106, USA
| | - Craig J. Hawker
- Department of Chemistry and Biochemistry, Department of Materials, and Materials Research Laboratory, University of California, Santa Barbara, California 93106, USA
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199
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Kim TI, Lee M, Kim SW. A guanidinylated bioreducible polymer with high nuclear localization ability for gene delivery systems. Biomaterials 2009; 31:1798-804. [PMID: 19854504 DOI: 10.1016/j.biomaterials.2009.10.034] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2009] [Accepted: 10/12/2009] [Indexed: 11/19/2022]
Abstract
Guanidinylated bioreducible polymer (GBP) was developed for gene delivery systems utilizing cellular penetrating ability of guanidine groups. GBP could retard pDNA from a weight ratio of 5 completely in agarose gel electrophoresis but pDNA was released from GBP polyplexes even at a weight ratio of 20 in reducing condition (2.5mm DTT) due to their biodegradation. GBP also could construct 200 nm-sized and positively charged (approximately 30 mV) polyplex nanoparticles with pDNA. The cytotoxicity of GBP was found to be minimal and GBP showed about 8 folds improved transfection efficiency than a scaffold polymer, poly(cystaminebisacrylamide-diaminohexane) (poly(CBA-DAH)) and even higher transfection efficiency than PEI25k in mammalian cell lines. Its high cellular uptake efficiency (96.1%) and strong nuclear localization ability for pDNA delivery due to the structural advantage of bioreducible polymer and guanidine groups were also identified, suggesting GBP is a promising candidate for efficient gene delivery systems.
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Affiliation(s)
- Tae-il Kim
- Center for Controlled Chemical Delivery, Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA.
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200
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Li L, Jiang X, Zhuo R. Synthesis and characterization of thermoresponsive polymers containing reduction-sensitive disulfide linkage. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23642] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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