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Steffens RC, Folda P, Fendler NL, Höhn M, Bücher-Schossau K, Kempter S, Snyder NL, Hartmann L, Wagner E, Berger S. GalNAc- or Mannose-PEG-Functionalized Polyplexes Enable Effective Lectin-Mediated DNA Delivery. Bioconjug Chem 2024; 35:351-370. [PMID: 38440876 DOI: 10.1021/acs.bioconjchem.3c00546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
A cationic, dendrimer-like oligo(aminoamide) carrier with four-arm topology based on succinoyl tetraethylene pentamine and histidines, cysteines, and N-terminal azido-lysines was screened for plasmid DNA delivery on various cell lines. The incorporated azides allow modification with various shielding agents of different polyethylene glycol (PEG) lengths and/or different ligands by copper-free click reaction, either before or after polyplex formation. Prefunctionalization was found to be advantageous over postfunctionalization in terms of nanoparticle formation, stability, and efficacy. A length of 24 ethylene oxide repetition units and prefunctionalization of ≥50% of azides per carrier promoted optimal polyplex shielding. PEG shielding resulted in drastically reduced DNA transfer, which could be successfully restored by active lectin targeting via novel GalNAc or mannose ligands, enabling enhanced receptor-mediated endocytosis of the carrier system. The involvement of the asialoglycoprotein receptor (ASGPR) in the uptake of GalNAc-functionalized polyplexes was confirmed in the ASGPR-positive hepatocarcinoma cell lines HepG2 and Huh7. Mannose-modified polyplexes showed superior cellular uptake and transfection efficacy compared to unmodified and shielded polyplexes in mannose-receptor-expressing dendritic cell-like DC2.4 cells.
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Affiliation(s)
- Ricarda C Steffens
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
| | - Paul Folda
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
| | - Nikole L Fendler
- Department of Chemistry, Davidson College, Davidson, North Carolina 28035, United States
| | - Miriam Höhn
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
| | - Katharina Bücher-Schossau
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Susanne Kempter
- Faculty of Physics, LMU Munich, 80539 Munich, Germany
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
| | - Nicole L Snyder
- Department of Chemistry, Davidson College, Davidson, North Carolina 28035, United States
| | - Laura Hartmann
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
- Institute for Macromolecular Chemistry, University Freiburg, Stefan-Meier-Str. 31, 79104 Freiburg im Breisgau, Germany
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
| | - Simone Berger
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
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Maze D, Pichon C, Midoux P. Reversible stabilization of DNA/PEI complexes by reducible click-linkage between DNA and polymer. A new polyplex concept for lowering polymer quantity. Gene Ther 2023; 30:783-791. [PMID: 36755129 DOI: 10.1038/s41434-023-00386-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 01/18/2023] [Accepted: 01/27/2023] [Indexed: 02/10/2023]
Abstract
Nonviral transfection of mammalian cells can be performed with electrostatic complexes (polyplexes) between a plasmid DNA (pDNA) encoding a foreign gene and a cationic polymer. However, an excess of the cationic polymer is required for pDNA condensation and polyplexes formation, which generate in vivo toxicity. Here, we present a new concept of polyplexes preparation aiming to reduce the polymer quantity. pDNA was functionalized with 3,6,9-trioxaundecan-1- {4 - [(2-chloroethyl) ethylamino)] - benzylamino}, 11-azide, and polyethyleneimine (lPEI) with reducible dibenzocyclooctyl (SS-DBCO) groups allowing azide-alkyne cycloaddition between pDNA and lPEI after condensation. The size of polyplexes with DBCO-SS-lPEI was smaller than with lPEI due to a stronger DNA condensation thanks to linkages between polymer and pDNA preventing dissociation until disulfide bridges reduction. In vitro transfection showed that the amount of DBCO-SS-lPEI leading to the most efficient polyplexes was three times lower than lPEI. As expected, toxicity in mice was significantly reduced upon intravenous injection of DBCO-SS-lPEI polyplexes at doses where the lPEI polyplexes killed mice. This is probably due to the high stability of the DBCO-SS-lPEI polyplexes which prevented their aggregation in the pulmonary capillaries. Overall, this new concept of polyplexes with DBCO-SS-lPEI offering the possibility of administering higher doses of polyplexes than lPEI and their ability to pass the pulmonary barrier could be favorably exploited for transfection of distant organs or tissues, such as tumors.
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Affiliation(s)
- Delphine Maze
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm and University of Orléans, F-45071, Orléans cedex 02, France
| | - Chantal Pichon
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm and University of Orléans, F-45071, Orléans cedex 02, France
| | - Patrick Midoux
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm and University of Orléans, F-45071, Orléans cedex 02, France.
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Wang W, Tasset A, Pyatnitskiy I, Lin P, Bellamkonda A, Mehta R, Gabbert C, Yuan F, Mohamed HG, Peppas NA, Wang H. Reversible, Covalent DNA Condensation Approach Using Chemical Linkers for Enhanced Gene Delivery. NANO LETTERS 2023; 23:9310-9318. [PMID: 37843021 DOI: 10.1021/acs.nanolett.3c02429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Nonviral gene delivery has emerged as a promising technology for gene therapy. Nonetheless, these approaches often face challenges, primarily associated with lower efficiency, which can be attributed to the inefficient transportation of DNA into the nucleus. Here, we report a two-stage condensation approach to achieve efficient nuclear transport of DNA. First, we utilize chemical linkers to cross-link DNA plasmids via a reversible covalent bond to form smaller-sized bundled DNA (b-DNA). Then, we package the b-DNA into cationic vectors to further condense b-DNA and enable efficient gene delivery to the nucleus. We demonstrate clear improvements in the gene transfection efficiency in vitro, including with 11.6 kbp plasmids and in primary cultured neurons. Moreover, we also observed a remarkable improvement in lung-selective gene transfection efficiency in vivo by this two-stage condensation approach following intravenous administration. This reversible covalent assembly strategy demonstrates substantial value of nonviral gene delivery for clinical therapeutic applications.
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Affiliation(s)
- Wenliang Wang
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Aaron Tasset
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Ilya Pyatnitskiy
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Peter Lin
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Arjun Bellamkonda
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Rohan Mehta
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Christian Gabbert
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Feng Yuan
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Heba Galaa Mohamed
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Nicholas A Peppas
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, Texas 78712, United States
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
- Department of Surgery and Perioperative Care, Dell Medical School, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Huiliang Wang
- Biomedical Engineering Cockrell School of Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
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García Coll J, Ulrich S. Nucleic-Acid-Templated Synthesis of Smart Polymer Vectors for Gene Delivery. Chembiochem 2023; 24:e202300333. [PMID: 37401911 DOI: 10.1002/cbic.202300333] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/12/2023] [Accepted: 07/04/2023] [Indexed: 07/05/2023]
Abstract
Nucleic acids are information-rich and readily available biomolecules, which can be used to template the polymerization of synthetic macromolecules. Here, we highlight the control over the size, composition, and sequence one can nowadays obtain by using this methodology. We also highlight how templated processes exploiting dynamic covalent polymerization can, in return, result in therapeutic nucleic acids fabricating their own dynamic delivery vector - a biomimicking concept that can provide original solutions for gene therapies.
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Affiliation(s)
- José García Coll
- IBMM, Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM, 34095, Montpellier, France
| | - Sébastien Ulrich
- IBMM, Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM, 34095, Montpellier, France
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Korovkina O, Polyakov D, Korzhikov-Vlakh V, Korzhikova-Vlakh E. Stimuli-Responsive Polypeptide Nanoparticles for Enhanced DNA Delivery. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238495. [PMID: 36500587 PMCID: PMC9736633 DOI: 10.3390/molecules27238495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/27/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022]
Abstract
The development of non-viral delivery systems for effective gene therapy is one of the current challenges in modern biomedicinal chemistry. In this paper, the synthesis of pH- and redox-responsive amphiphilic polypeptides for intracellular DNA delivery is reported and discussed. Two series of polypeptides consisting of L-lysine, L-phenylalanine, L-histidine, and L-cysteine as well as the same amino acids with L-glutamic acid were synthesized by a combination of copolymerization of N-carboxyanhydrides of α-amino acids and post-polymerization modification of the resulting copolymers. The presence of histidine provided pH-sensitive properties under weakly acidic conditions specific to endosomal pH. In turn, the presence of cysteine allowed for the formation of redox-responsive disulfide bonds, which stabilized the self-assembled nanoparticles in the extracellular environment but could degrade inside the cell. The formation of intraparticle disulfide bonds resulted in their compactization from 200-250 to 55-100 nm. Empty and pDNA-loaded cross-linked nanoparticles showed enhanced stability in various media compared to non-crosslinked nanoparticles. At the same time, the addition of glutathione promoted particle degradation and nucleic acid release. The delivery systems were able to retain their size and surface charge at polypeptide/pDNA ratios of 10 or higher. GFP expression in HEK 293 was induced by the delivery of pEGFP-N3 with the developed polypeptide nanoparticles. The maximal transfection efficacy (70%) was observed when the polypeptide/pDNA ratio was 100.
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Affiliation(s)
- Olga Korovkina
- Institute of Chemistry, Saint-Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Dmitry Polyakov
- Institute of Experimental Medicine, Acad. Pavlov Street 12, 197376 St. Petersburg, Russia
| | - Viktor Korzhikov-Vlakh
- Institute of Chemistry, Saint-Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia
| | - Evgenia Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia
- Correspondence:
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Egorova A, Shtykalova S, Maretina M, Selutin A, Shved N, Deviatkin D, Selkov S, Baranov V, Kiselev A. Polycondensed Peptide Carriers Modified with Cyclic RGD Ligand for Targeted Suicide Gene Delivery to Uterine Fibroid Cells. Int J Mol Sci 2022; 23:1164. [PMID: 35163086 PMCID: PMC8835468 DOI: 10.3390/ijms23031164] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 02/04/2023] Open
Abstract
Suicide gene therapy was suggested as a possible strategy for the treatment of uterine fibroids (UFs), which are the most common benign tumors inwomen of reproductive age. For successful suicide gene therapy, DNAtherapeutics should be specifically delivered to UF cells. Peptide carriers are promising non-viral gene delivery systems that can be easily modified with ligands and other biomolecules to overcome DNA transfer barriers. Here we designed polycondensed peptide carriers modified with a cyclic RGD moiety for targeted DNA delivery to UF cells. Molecular weights of the resultant polymers were determined, and inclusion of the ligand was confirmed by MALDI-TOF. The physicochemical properties of the polyplexes, as well as cellular DNA transport, toxicity, and transfection efficiency were studied, and the specificity of αvβ3 integrin-expressing cell transfection was proved. The modification with the ligand resulted in a three-fold increase of transfection efficiency. Modeling of the suicide gene therapy by transferring the HSV-TK suicide gene to primary cells obtained from myomatous nodes of uterine leiomyoma patients was carried out. We observed up to a 2.3-fold decrease in proliferative activity after ganciclovir treatment of the transfected cells. Pro- and anti-apoptotic gene expression analysis confirmed our findings that the developed polyplexes stimulate UF cell death in a suicide-specific manner.
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Affiliation(s)
- Anna Egorova
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.E.); (S.S.); (M.M.); (N.S.); (D.D.); (V.B.)
| | - Sofia Shtykalova
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.E.); (S.S.); (M.M.); (N.S.); (D.D.); (V.B.)
| | - Marianna Maretina
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.E.); (S.S.); (M.M.); (N.S.); (D.D.); (V.B.)
| | - Alexander Selutin
- Department of Immunology and Intercellular Interactions, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.S.); (S.S.)
| | - Natalia Shved
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.E.); (S.S.); (M.M.); (N.S.); (D.D.); (V.B.)
| | - Dmitriy Deviatkin
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.E.); (S.S.); (M.M.); (N.S.); (D.D.); (V.B.)
| | - Sergey Selkov
- Department of Immunology and Intercellular Interactions, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.S.); (S.S.)
| | - Vladislav Baranov
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.E.); (S.S.); (M.M.); (N.S.); (D.D.); (V.B.)
| | - Anton Kiselev
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint Petersburg, Russia; (A.E.); (S.S.); (M.M.); (N.S.); (D.D.); (V.B.)
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7
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Xin X, Zhang Z, Zhang X, Chen J, Lin X, Sun P, Liu X. Bioresponsive nanomedicines based on dynamic covalent bonds. NANOSCALE 2021; 13:11712-11733. [PMID: 34227639 DOI: 10.1039/d1nr02836g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Trends in the development of modern medicine necessitate the efficient delivery of therapeutics to achieve the desired treatment outcomes through precise spatiotemporal accumulation of therapeutics at the disease site. Bioresponsive nanomedicine is a promising platform for this purpose. Dynamic covalent bonds (DCBs) have attracted much attention in studies of the fabrication of bioresponsive nanomedicines with an abundance of combinations of therapeutic modules and carrier function units. DCB-based nanomedicines could be designed to maintain biological friendly synthesis and site-specific release for optimal therapeutic effects, allowing the complex to retain an integrated structure before accumulating at the disease site, but disassembling into individual active components without compromising function in the targeted organs or tissues. In this review, we focus on responsive nanomedicines containing dynamic chemical bonds that can be cleaved by various specific stimuli, enabling achievement of targeted drug release for optimal therapy in various diseases.
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Affiliation(s)
- Xiaoqian Xin
- Clinical Translational Center for Targeted Drug, Department of Pharmacology, School of Medicine, Jinan University, Guangzhou 510632, PR China.
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Berger S, Krhač Levačić A, Hörterer E, Wilk U, Benli-Hoppe T, Wang Y, Öztürk Ö, Luo J, Wagner E. Optimizing pDNA Lipo-polyplexes: A Balancing Act between Stability and Cargo Release. Biomacromolecules 2021; 22:1282-1296. [PMID: 33616407 DOI: 10.1021/acs.biomac.0c01779] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
When optimizing nanocarriers, structural motifs that are beneficial for the respective type of cargo need to be identified. Here, succinoyl tetraethylene pentamine (Stp)-based lipo-oligoaminoamides (OAAs) were optimized for the delivery of plasmid DNA (pDNA). Structural variations comprised saturated fatty acids with chain lengths between C2 and C18 and terminal cysteines as units promoting nanoparticle stabilization, histidines for endosomal buffering, and disulfide building blocks for redox-sensitive release. Biophysical and tumor cell culture screening established clear-cut relationships between lipo-OAAs and characteristics of the formed pDNA complexes. Based on the optimized alternating Stp-histidine backbones, lipo-OAAs containing fatty acids with chain lengths around C6 to C10 displayed maximum gene transfer with around 500-fold higher gene expression than that of C18 lipo-OAA analogues. Promising lipo-OAAs, however, showed only moderate in vivo efficiency. In vitro testing in 90% full serum, revealing considerable inhibition of lytic and gene-transfer activity, was found as a new screening model predictive for intravenous applications in vivo.
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Affiliation(s)
- Simone Berger
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
| | - Ana Krhač Levačić
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
| | - Elisa Hörterer
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
| | - Ulrich Wilk
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
| | - Teoman Benli-Hoppe
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
| | - Yanfang Wang
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
| | - Özgür Öztürk
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
| | - Jie Luo
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Center for Nanoscience, Ludwig-Maximilians-Universität Munich, Butenandtstrasse 5-13, Munich 81377, Germany
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Freitag F, Wagner E. Optimizing synthetic nucleic acid and protein nanocarriers: The chemical evolution approach. Adv Drug Deliv Rev 2021; 168:30-54. [PMID: 32246984 DOI: 10.1016/j.addr.2020.03.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/10/2020] [Accepted: 03/30/2020] [Indexed: 12/20/2022]
Abstract
Optimizing synthetic nanocarriers is like searching for a needle in a haystack. How to find the most suitable carrier for intracellular delivery of a specified macromolecular nanoagent for a given disease target location? Here, we review different synthetic 'chemical evolution' strategies that have been pursued. Libraries of nanocarriers have been generated either by unbiased combinatorial chemistry or by variation and novel combination of known functional delivery elements. As in natural evolution, definition of nanocarriers as sequences, as barcode or design principle, may fuel chemical evolution. Screening in appropriate test system may not only provide delivery candidates, but also a refined understanding of cellular delivery including novel, unpredictable mechanisms. Combined with rational design and computational algorithms, candidates can be further optimized in subsequent evolution cycles into nanocarriers with improved safety and efficacy. Optimization of nanocarriers differs for various cargos, as illustrated for plasmid DNA, siRNA, mRNA, proteins, or genome-editing nucleases.
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Zhang L, Wei F, Al-Ammari A, Sun D. An optimized mesoporous silica nanosphere-based carrier system with chemically removable Au nanoparticle caps for redox-stimulated and targeted drug delivery. NANOTECHNOLOGY 2020; 31:475102. [PMID: 32413886 DOI: 10.1088/1361-6528/ab9391] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
To date, numerous drug delivery systems based on mesoporous silica nanoparticles (MSNs) have been explored, but little has been done on optimizing the structure and composition of MSNs to achieve effective drug delivery for cancer cells. Ideal mesoporous drug carriers should incorporate drugs in a way that prevents pre-release in biological surroundings before reaching the targeted area, which usually requires the capping of the open ends on the surface and the incorporation of targeting ligands on the exterior of nanocarriers. In this study, an MSN-based drug carrier system was synthesized with biocompatible Au nanoparticles (NPs) as the 'hard caps', and folic acid conjugated to the surface for targeting folate receptor-overexpressed cancer cells. Disulfide bonds linking Au and MSN NPs were introduced to the MSN surface as the redox-sensitive and chemically removable components. To study the effect of structures of MSNs in drug release, three types of MSNs were compared, including hollow mesoporous silica NPs, large-pore hollow mesoporous silica NPs and typical nano-sized pores on the surface (MSN). To achieve optimal coverage of thiol groups, two methods of functionalization were compared in effecting drug loading and release in vitro. Finally, the effect of residual surfactant was also discussed in anticancer studies. Therefore, the appropriate MSN nanostructure for redox-sensitive and targeted drug delivery was optimized.
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Affiliation(s)
- Lei Zhang
- Chemicobiology and Functional Materials Institute, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China. State Key laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
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11
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Peptides as a material platform for gene delivery: Emerging concepts and converging technologies. Acta Biomater 2020; 117:40-59. [PMID: 32966922 DOI: 10.1016/j.actbio.2020.09.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/27/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023]
Abstract
Successful gene therapies rely on methods that safely introduce DNA into target cells and enable subsequent expression of proteins. To that end, peptides are an attractive materials platform for DNA delivery, facilitating condensation into nanoparticles, delivery into cells, and subcellular release to enable protein expression. Peptides are programmable materials that can be designed to address biocompatibility, stability, and subcellular barriers that limit efficiency of non-viral gene delivery systems. This review focuses on fundamental structure-function relationships regarding peptide design and their impact on nanoparticle physical properties, biologic activity, and biocompatibility. Recent peptide technologies utilize multi-dimensional structures, non-natural chemistries, and combinations of peptides with lipids to achieve desired properties and efficient transfection. Advances in DNA cargo design are also presented to highlight further opportunities for peptide-based gene delivery. Modern DNA designs enable prolonged expression compared to traditional plasmids, providing an additional component that can be synergized with peptide carriers for improved transfection. Peptide transfection systems are poised to become a flexible and efficient platform incorporating new chemistries, functionalities, and improved DNA cargos to usher in a new era of gene therapy.
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12
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Wang Y, Wagner E. Non-Viral Targeted Nucleic Acid Delivery: Apply Sequences for Optimization. Pharmaceutics 2020; 12:E888. [PMID: 32961908 PMCID: PMC7559072 DOI: 10.3390/pharmaceutics12090888] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 09/09/2020] [Accepted: 09/15/2020] [Indexed: 02/07/2023] Open
Abstract
In nature, genomes have been optimized by the evolution of their nucleic acid sequences. The design of peptide-like carriers as synthetic sequences provides a strategy for optimizing multifunctional targeted nucleic acid delivery in an iterative process. The optimization of sequence-defined nanocarriers differs for different nucleic acid cargos as well as their specific applications. Supramolecular self-assembly enriched the development of a virus-inspired non-viral nucleic acid delivery system. Incorporation of DNA barcodes presents a complementary approach of applying sequences for nanocarrier optimization. This strategy may greatly help to identify nucleic acid carriers that can overcome pharmacological barriers and facilitate targeted delivery in vivo. Barcode sequences enable simultaneous evaluation of multiple nucleic acid nanocarriers in a single test organism for in vivo biodistribution as well as in vivo bioactivity.
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Affiliation(s)
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Center for System-based Drug Research, Center for NanoScience (CeNS), Ludwig-Maximilians-Universität, D-81377 Munich, Germany;
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13
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Egorova AA, Shtykalova SV, Maretina MA, Selyutin AV, Shved NY, Krylova NV, Ilina AV, Pyankov IA, Freund SA, Selkov SA, Baranov VS, Kiselev AV. Cys-Flanked Cationic Peptides For Cell Delivery of the Herpes Simplex Virus Thymidine Kinase Gene for Suicide Gene Therapy of Uterine Leiomyoma. Mol Biol 2020. [DOI: 10.1134/s0026893320030061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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14
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Wang G, Zhu D, Zhou Z, Piao Y, Tang J, Shen Y. Glutathione-Specific and Intracellularly Labile Polymeric Nanocarrier for Efficient and Safe Cancer Gene Delivery. ACS APPLIED MATERIALS & INTERFACES 2020; 12:14825-14838. [PMID: 32166948 DOI: 10.1021/acsami.9b22394] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cationic polymers condense nucleic acids into nanosized complexes (polyplexes) that are widely explored for nonviral gene delivery, but their strong electrostatic binding with DNA causes inefficient intracellular gene release and translation and thereby unsatisfactory gene transfection efficiencies. Facilitated intracellular dissociation of polyplexes by making the polymer undergo positive-to-negative/neutral charge reversal can effectively solve these problems, but they must be sufficiently stable during the delivery. Herein, we report the first glutathione (GSH)-specific intracellular labile polyplexes for cancer-targeted gene delivery. The polymers are made from p-(2,4-dinitrophenyloxybenzyl)-ammonium cationic moieties, whose p-2,4-dinitrophenyl ether is cleaved specifically by GSH, rather than other biological thiols, triggering the conversion of the ammonium cation into the carboxylate anion and thus the fast intracellular DNA release of the polyplexes. Furthermore, the polyplexes coated with PEG-functionalized lipids are stable in biological fluids to gain long blood circulation for tumor accumulation. Thus, the efficient tumor accumulation and cell transfection of the polyplexes loaded with the tumor suicide gene tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) give rise to potent antitumor activity similar to that of the first-line chemotherapy drug paclitaxel but with much less adverse effects.
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Affiliation(s)
- Guowei Wang
- Center for Bionanoengineering and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Dingcheng Zhu
- Center for Bionanoengineering and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhuxian Zhou
- Center for Bionanoengineering and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ying Piao
- Center for Bionanoengineering and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jianbin Tang
- Center for Bionanoengineering and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Youqing Shen
- Center for Bionanoengineering and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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15
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Heat-shrinking DNA nanoparticles for in vivo gene delivery. Gene Ther 2020; 27:196-208. [PMID: 31900424 DOI: 10.1038/s41434-019-0117-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 11/26/2019] [Accepted: 12/10/2019] [Indexed: 12/16/2022]
Abstract
The particle size of a PEG-peptide DNA nanoparticle is a key determinant of biodistribution following i.v. dosing. DNA nanoparticles of <100 nm in diameter are sufficiently small to cross through fenestrated endothelial cells to target hepatocytes in the liver. In addition, DNA nanoparticles must be close to charge-neutral to avoid recognition and binding to scavenger receptors found on Kupffer cells and endothelial cells in the liver. In the present study, we demonstrate an approach to heat shrink DNA nanoparticles to reduce their size to <100 nm to target hepatocytes. An optimized protocol heated plasmid DNA at 100 °C for 10 min resulting in partial denaturation. The immediate addition of a polyacridine PEG-peptide followed by cooling to room temperature resulted in heat-shrunken DNA nanoparticles that were ~70 nm in diameter compared with 170 nm when heating was omitted. Heat shrinking resulted in the conversion of supercoiled DNA into open circular to remove strain during compaction. Heat-shrunken DNA nanoparticles were stable to freeze-drying and reconstitution in saline. Hydrodynamic dosing established that 70 nm heat-shrunken DNA nanoparticles efficiently expressed luciferase in mouse liver. Biodistribution studies revealed that 70 nm DNA nanoparticles are rapidly and transiently taken up by liver whereas 170 nm DNA nanoparticles avoid liver uptake due to their larger size. The results provide a new approach to decrease the size of polyacridine PEG-peptide DNA nanoparticles to allow penetration of the fenestrated endothelium of the liver for the purpose of transfecting hepatocytes in vivo.
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16
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Su D, Coste M, Diaconu A, Barboiu M, Ulrich S. Cationic dynamic covalent polymers for gene transfection. J Mater Chem B 2020; 8:9385-9403. [DOI: 10.1039/d0tb01836h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dynamic covalent polymers have revealed strong potential in gene delivery, thanks to their versatile self-assembly, adaptive and responsive behaviors.
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Affiliation(s)
- Dandan Su
- Institut Européen des Membranes
- Adaptive Supramolecular Nanosystems Group
- University of Montpellier
- ENSCM
- CNRS
| | - Maëva Coste
- Institut des Biomolécules Max Mousseron (IBMM)
- CNRS
- Université of Montpellier
- ENSCM
- Montpellier
| | - Andrei Diaconu
- Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi
- Romania
| | - Mihail Barboiu
- Institut Européen des Membranes
- Adaptive Supramolecular Nanosystems Group
- University of Montpellier
- ENSCM
- CNRS
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM)
- CNRS
- Université of Montpellier
- ENSCM
- Montpellier
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17
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Ueno M, Yamauchi S, Kumekawa D, Yamasaki Y. Peptide Sequence-Dependent Gene Expression of PEGylated Peptide/DNA Complexes. Mol Pharm 2019; 16:3072-3082. [PMID: 31173498 DOI: 10.1021/acs.molpharmaceut.9b00295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Oligolysine-based PEG-peptides with 15 or 20 amino acid residues including two cysteines were synthesized to formulate cross-linked polyplex micelles (PMs) incorporating luciferase-coding plasmid DNA (pDNA). Two cysteine residues were separately allocated at the C-terminal, center, or N-terminal of peptide moieties. Although TEM observation showed that all PEG-peptides condensed pDNA into rod-like or toroidal morphologies, the rod length distribution of PMs was affected by both the amino acid sequence and the peptide length of PEG-peptides. In comparison to the cysteine-uninstalled PEG-peptides, the cysteine-installed PEG-peptides exhibited a reductive environment-responsive pDNA release, which was observed in a gel retardation assay. From physicochemical characterizations, a relationship between the amino acid sequence and the in vitro gene expression efficacy of PMs in a cell-free protein synthesis system has been clearly demonstrated. Finally, the cell-based assay using HeLa cells has been tested, and the differences between both results of cell-free and cell-based systems are discussed.
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Affiliation(s)
- Mikiko Ueno
- Department of Materials Engineering, Graduate School of Engineering , The University of Tokyo , Hongo 7-3-1 , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Satoshi Yamauchi
- Department of Materials Engineering, Graduate School of Engineering , The University of Tokyo , Hongo 7-3-1 , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Daiki Kumekawa
- Department of Materials Engineering, Graduate School of Engineering , The University of Tokyo , Hongo 7-3-1 , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Yuichi Yamasaki
- Department of Materials Engineering, Graduate School of Engineering , The University of Tokyo , Hongo 7-3-1 , Bunkyo-ku, Tokyo 113-8656 , Japan
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18
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Abstract
Delivery remains a major obstacle restricting the potential action of small molecular drugs as well as novel biologics which cannot readily enter cells without the help of a vector. A successful active delivery process involves three steps: (a) tagging the drug with a vector, (b) effective trafficking of this [drug-vector] conjugate through biological barriers, and finally (c) controlled drug release. While covalent bond formation and/or supramolecular association is involved in the making of the [drug-vector] conjugate, the final step requires precisely a controlled dissociation in order to trigger drug release. Therefore, in pursuit of smart, effective, and nontoxic delivery systems, it has become widely recognized that control over dynamic self-assembly could unleash the efficacy of artificial vectors. In this Account, I discuss our endeavors, and those of colleagues, in the recent implementation of Dynamic Covalent Chemistry (DCvC) in delivery applications. DCvC exploits reversible covalent reactions to generate covalent systems that can self-fabricate, adapt, respond, and fall apart in a controlled fashion. A privileged set of reversible covalent reactions has emerged in the community working on delivery applications and is based on condensation reactions (imine, acylhydrazone, oxime), and disulfide and boronate ester formations. The latest developments making this chemistry particularly attractive for such a DCvC approach are discussed. The rational justifying the potential of DCvC in delivery is based on the principle that using such reversible covalent reactions afford transient [drug-vector] conjugates which form spontaneously and chemoselectively, then adapt and self-correct their structure during self-assembly and trafficking thanks to the dynamic nature of the reversible covalent bonds, and finally respond to physicochemical stimuli such as pH and redox changes, thereby enabling controlled dissociation and concomitant drug release. For these reasons, DCvC has recently emerged as a leverage tool with growing prospects for advancing toward smarter delivery systems. The implementation of DCvC can follow three approaches that are discussed herein: (1) dynamic covalent bioconjugates, involving the transient covalent conjugation with a vector, (2) dynamic covalent vectors, involving the controlled dynamic and adaptive assembly and disassembly of vectors that complex drugs through supramolecular association, and (3) dynamic covalent targeting, involving the transient chemoselective formation of covalent bonds with the constituents of cell membranes. While DCvC has already attracted interest in material sciences, the recent results described in this Account showcase the vast potential of DCvC in biological sciences, and in particular in delivery applications where self-fabricated, adaptive, and responsive devices are of utmost importance.
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Affiliation(s)
- Sébastien Ulrich
- IBMM, Université de Montpellier, CNRS, ENSCM, Montpellier, France
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19
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Hu WW, Huang SC, Jin SLC. A novel antimicrobial peptide-derived vehicle for oligodeoxynucleotide delivery to inhibit TNF-α expression. Int J Pharm 2019; 558:63-71. [PMID: 30639220 DOI: 10.1016/j.ijpharm.2018.12.082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/17/2018] [Accepted: 12/23/2018] [Indexed: 11/19/2022]
Abstract
Indolicidin (IL), an antimicrobial peptide, was investigated as a vehicle to promote oligodeoxynucleotides (ODNs) delivery. To increase charge density, IL was dimerized by adding a cysteine to its C or N terminus, which was denoted as ILC or CIL, respectively. In contrast to IL, cytotoxicity of ILC and CIL was significantly reduced because these dimeric peptides were longer than IL, which restricted their insertions to cell membrane. In contrast to ILC, CIL displayed well loading efficiency. These peptides were applied to deliver ODNs against tumor necrosis factor-α (TNF-α) because TNF-α is a pro-inflammatory cytokine which plays an important role in immunological diseases. Although IL/ODN slightly reduced TNF-α expression, the high cytotoxicity restricted its application window. Furthermore, ILC/ODN was incapable of inducing gene silence due to its low encapsulation efficiency and poor endosomal escape. In contrast, CIL exhibited excellent ODN transportation and the internalized CIL/ODN complexes may escape from endosomes. Therefore, TNF-α expression can be specifically reduced by CIL/ODN complexes, and the silence effect was maintained longer than 14 h. This study provides a useful strategy of peptide vehicle design, which may facilitate the delivery of not only ODN but also other oligonucleotides, including siRNA and miRNA, to promote gene silence application.
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Affiliation(s)
- Wei-Wen Hu
- Department of Chemical and Materials Engineering, National Central University, Zhongli District, Taoyuan City, Taiwan; Center for Biocellular Engineering, National Central University, Zhongli District, Taoyuan City, Taiwan.
| | - Shih-Chun Huang
- Department of Chemical and Materials Engineering, National Central University, Zhongli District, Taoyuan City, Taiwan
| | - Shiow-Lian Catherine Jin
- Department of Life Sciences, National Central University, Zhongli District, Taoyuan City, Taiwan
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20
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Peptide-based targeted therapeutics: Focus on cancer treatment. J Control Release 2018; 292:141-162. [DOI: 10.1016/j.jconrel.2018.11.004] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/03/2018] [Accepted: 11/03/2018] [Indexed: 12/14/2022]
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21
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Chen J, Wang K, Wu J, Tian H, Chen X. Polycations for Gene Delivery: Dilemmas and Solutions. Bioconjug Chem 2018; 30:338-349. [PMID: 30383373 DOI: 10.1021/acs.bioconjchem.8b00688] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Gene therapy has been a promising strategy for treating numerous gene-associated human diseases by altering specific gene expressions in pathological cells. Application of nonviral gene delivery is hindered by various dilemmas encountered in systemic gene therapy. Therefore, solutions must be established to address the unique requirements of gene-based treatment of diseases. This review will particularly highlight the dilemmas in polycation-based gene therapy by systemic treatment. Several promising strategies, which are expected to overcome these challenges, will be briefly reviewed. This review will also explore the development of polycation-based gene delivery systems for clinical applications.
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Affiliation(s)
- Jie Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China.,University of Science and Technology of China , Hefei 230026 , P. R. China.,Jilin Biomedical Polymers Engineering Laboratory , Changchun 130022 , P. R. China
| | - Kui Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China.,University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Jiayan Wu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China.,University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Huayu Tian
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China.,University of Science and Technology of China , Hefei 230026 , P. R. China.,Jilin Biomedical Polymers Engineering Laboratory , Changchun 130022 , P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China.,University of Science and Technology of China , Hefei 230026 , P. R. China.,Jilin Biomedical Polymers Engineering Laboratory , Changchun 130022 , P. R. China
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22
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Klein PM, Kern S, Lee DJ, Schmaus J, Höhn M, Gorges J, Kazmaier U, Wagner E. Folate receptor-directed orthogonal click-functionalization of siRNA lipopolyplexes for tumor cell killing in vivo. Biomaterials 2018; 178:630-642. [DOI: 10.1016/j.biomaterials.2018.03.031] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 03/15/2018] [Accepted: 03/17/2018] [Indexed: 12/11/2022]
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23
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Ho JK, White PJ, Pouton CW. Self-Crosslinking Lipopeptide/DNA/PEGylated Particles: A New Platform for DNA Vaccination Designed for Assembly in Aqueous Solution. MOLECULAR THERAPY. NUCLEIC ACIDS 2018; 12:504-517. [PMID: 30195787 PMCID: PMC6077166 DOI: 10.1016/j.omtn.2018.05.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 05/20/2018] [Accepted: 05/30/2018] [Indexed: 12/31/2022]
Abstract
Delivery of plasmids for gene expression in vivo is an inefficient process that requires improvement and optimization to unlock the clinical potential of DNA vaccines. With ease of manufacture and biocompatibility in mind, we explored condensation of DNA in aqueous solution with a self-crosslinking, endosome-escaping lipopeptide (LP), stearoyl-Cys-His-His-Lys-Lys-Lys-amide (stearoyl-CH2K3), to produce cationic LP/DNA complexes. To test whether poly(ethylene glycol) (PEG)-ylation of these cationic complexes to neutralize the surface charge would improve the distribution, gene expression, and immune responses poly(ethylene glycol), these LP/DNA complexes were combined with 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)-2000] (DSPE-PEG2000). Fluorescence imaging illustrated that the cationic complexes exhibited the highest degree of localization and lowest degree of dispersion throughout the injected muscle, suggesting impaired mobility of cationic particles upon administration. Nanoluciferase reporter assays over a 90-day period demonstrated that gene expression levels in muscle were highest for PEGylated particles, with over a 200-fold higher level of expression than the cationic particles observed at 30 days. Humoral and cell-mediated immune responses were evaluated in vivo after injection of an ovalbumin expression plasmid. PEGylation improved both immune responses to the DNA complexes in mice. Overall, this suggests that PEGylation of cationic lipopeptide complexes can significantly improve both the transgene expression and immunogenicity of intramuscular DNA vaccines.
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Affiliation(s)
- Joan K Ho
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), Melbourne, VIC, Australia
| | - Paul J White
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), Melbourne, VIC, Australia
| | - Colin W Pouton
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), Melbourne, VIC, Australia.
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24
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Modular Synthesis of Bioreducible Gene Vectors through Polyaddition of N, N'-Dimethylcystamine and Diglycidyl Ethers. Polymers (Basel) 2018; 10:polym10060687. [PMID: 30966721 PMCID: PMC6404356 DOI: 10.3390/polym10060687] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/13/2018] [Accepted: 06/16/2018] [Indexed: 02/01/2023] Open
Abstract
Bioreducible, cationic linear poly(amino ether)s (PAEs) were designed as promising gene vectors. These polymers were synthesized by the reaction of a disulfide-functional monomer, N,N'-dimethylcystamine (DMC), and several different diglycidyl ethers. The resulting PAEs displayed a substantial buffer capacity (up to 64%) in the endosomal acidification region of pH 7.4⁻5.1. The PAEs condense plasmid DNA into 80⁻200 nm sized polyplexes, and have surface charges ranging from +20 to +40 mV. The polyplexes readily release DNA upon exposure to reducing conditions (2.5 mM DTT) due to the cleavage of the disulfide groups that is present in the main chain of the polymers, as was demonstrated by agarose gel electrophoresis. Upon exposing COS-7 cells to polyplexes that were prepared at polymer/DNA w/w ratios below 48, cell viabilities between 80⁻100% were observed, even under serum-free conditions. These polyplexes show comparable or higher transfection efficiencies (up to 38%) compared to 25 kDa branched polyethylenimine (PEI) polyplexes (12% under serum-free conditions). Moreover, the PAE-based polyplexes yield transfection efficiencies as high as 32% in serum-containing medium, which makes these polymers interesting for gene delivery applications.
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25
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Spicer CD, Jumeaux C, Gupta B, Stevens MM. Peptide and protein nanoparticle conjugates: versatile platforms for biomedical applications. Chem Soc Rev 2018; 47:3574-3620. [PMID: 29479622 PMCID: PMC6386136 DOI: 10.1039/c7cs00877e] [Citation(s) in RCA: 283] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Peptide- and protein-nanoparticle conjugates have emerged as powerful tools for biomedical applications, enabling the treatment, diagnosis, and prevention of disease. In this review, we focus on the key roles played by peptides and proteins in improving, controlling, and defining the performance of nanotechnologies. Within this framework, we provide a comprehensive overview of the key sequences and structures utilised to provide biological and physical stability to nano-constructs, direct particles to their target and influence their cellular and tissue distribution, induce and control biological responses, and form polypeptide self-assembled nanoparticles. In doing so, we highlight the great advances made by the field, as well as the challenges still faced in achieving the clinical translation of peptide- and protein-functionalised nano-drug delivery vehicles, imaging species, and active therapeutics.
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Affiliation(s)
- Christopher D Spicer
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Scheeles Väg 2, Stockholm, Sweden.
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26
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He D, Lin H, Yu Y, Shi L, Tu J. Precisely Defined Polymers for Efficient Gene Delivery. Top Curr Chem (Cham) 2018; 376:2. [DOI: 10.1007/s41061-017-0183-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 12/27/2017] [Indexed: 01/03/2023]
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27
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Krhac Levacic A, Morys S, Wagner E. Solid-phase supported design of carriers for therapeutic nucleic acid delivery. Biosci Rep 2017; 37:BSR20160617. [PMID: 28963371 PMCID: PMC5662914 DOI: 10.1042/bsr20160617] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/26/2017] [Accepted: 09/27/2017] [Indexed: 12/21/2022] Open
Abstract
Nucleic acid molecules are important therapeutic agents in the field of antisense oligonucleotide, RNA interference, and gene therapies. Since nucleic acids are not able to cross cell membranes and enter efficiently into cells on their own, the development of efficient, safe, and precise delivery systems is the crucial challenge for development of nucleic acid therapeutics. For the delivery of nucleic acids to their intracellular site of action, either the cytosol or the nucleus, several extracellular and intracellular barriers have to be overcome. Multifunctional carriers may handle the different special requirements of each barrier. The complexity of such macromolecules however poses a new hurdle in medical translation, which is the chemical production in reproducible and well-defined form. Solid-phase assisted synthesis (SPS) presents a solution for this challenge. The current review provides an overview on the design and SPS of precise sequence-defined synthetic carriers for nucleic acid cargos.
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Affiliation(s)
- Ana Krhac Levacic
- Pharmaceutical Biotechnology, Center for System-Based Drug Research, and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, D-81377 Munich, Germany
| | - Stephan Morys
- Pharmaceutical Biotechnology, Center for System-Based Drug Research, and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, D-81377 Munich, Germany
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Center for System-Based Drug Research, and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, D-81377 Munich, Germany
- Nanosystems Initiative Munich, Schellingstrasse 4, D-80799 Munich, Germany
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28
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Reinhard S, Zhang W, Wagner E. Optimized Solid‐Phase‐Assisted Synthesis of Oleic Acid Containing siRNA Nanocarriers. ChemMedChem 2017; 12:1464-1470. [DOI: 10.1002/cmdc.201700350] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/17/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Sören Reinhard
- Department of Pharmacy, Pharmaceutical Biotechnology, Center of Nanoscience, CeNSLudwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Wei Zhang
- Department of Pharmacy, Pharmaceutical Biotechnology, Center of Nanoscience, CeNSLudwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Ernst Wagner
- Department of Pharmacy, Pharmaceutical Biotechnology, Center of Nanoscience, CeNSLudwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
- Nanosystems Initiative Munich, NIM Schellingstr. 4 80799 München Germany
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29
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Chen J, Guan X, Hu Y, Tian H, Chen X. Peptide-Based and Polypeptide-Based Gene Delivery Systems. Top Curr Chem (Cham) 2017; 375:32. [DOI: 10.1007/s41061-017-0115-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 01/28/2017] [Indexed: 12/15/2022]
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30
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Zhang P, Wagner E. History of Polymeric Gene Delivery Systems. Top Curr Chem (Cham) 2017; 375:26. [PMID: 28181193 DOI: 10.1007/s41061-017-0112-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 01/24/2017] [Indexed: 12/16/2022]
Abstract
As an option for genetic disease treatment and an alternative for traditional cancer chemotherapy, gene therapy achieves significant attention. Nucleic acid delivery, however, remains a main challenge in human gene therapy. Polymer-based delivery systems offer a safer and promising route for therapeutic gene delivery. Over the past five decades, various cationic polymers have been optimized for increasingly effective nucleic acid transfer. This resulted in a chemical evolution of cationic polymers from the first-generation polycations towards bioinspired multifunctional sequence-defined polymers and nanocomposites. With the increasing of knowledge in molecular biological processes and rapid progress of macromolecular chemistry, further improvement of polymeric nucleic acid delivery systems will provide effective tool for gene-based therapy in the near future.
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Affiliation(s)
- Peng Zhang
- Pharmaceutical Biotechnology, Center for System-Based Drug Research Ludwig-Maximilians-Universität, 81377, Munich, Germany. .,Nanosystems Initiative Munich (NIM), 80799, Munich, Germany.
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Center for System-Based Drug Research Ludwig-Maximilians-Universität, 81377, Munich, Germany.,Nanosystems Initiative Munich (NIM), 80799, Munich, Germany.,Center for NanoScience (CeNS), Ludwig-Maximilians-Universität, 80799, Munich, Germany
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31
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Nanostructured silicate substituted calcium phosphate (NanoSiCaPs) nanoparticles — Efficient calcium phosphate based non-viral gene delivery systems. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:486-95. [DOI: 10.1016/j.msec.2016.06.076] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 05/23/2016] [Accepted: 06/23/2016] [Indexed: 11/21/2022]
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32
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Klein PM, Reinhard S, Lee DJ, Müller K, Ponader D, Hartmann L, Wagner E. Precise redox-sensitive cleavage sites for improved bioactivity of siRNA lipopolyplexes. NANOSCALE 2016; 8:18098-18104. [PMID: 27734055 DOI: 10.1039/c6nr05767e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Lipo-oligomers have been proven as potent siRNA carriers based on stable electrostatic and hydrophobic complex formation and endosomal membrane destabilization. Although high stability of siRNA polyplexes is desirable in the extracellular space and cellular uptake, intracellular disassembly is important for the cytosolic release of siRNA and RNA-induced silencing complex formation. To improve the release, bioreducible sequence-defined lipo-oligomers were synthesized by solid-phase assisted synthesis using the disulfide building block Fmoc-succinoyl-cystamine for precise positioning of a disulfide unit between a lipophilic diacyl (bis-myristyl, bis-stearyl or bis-cholestanyl) domain and an ionizable oligocationic siRNA binding unit. Reducible siRNA polyplexes show higher gene silencing efficacy and lower cytotoxicity than their stable analogs, consistent with glutathione-triggered siRNA release and reduced lytic activity.
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Affiliation(s)
- Philipp Michael Klein
- Pharmaceutical Biotechnology, Department of Pharmacy, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstr. 5-13, 81377 München, Germany.
| | - Sören Reinhard
- Pharmaceutical Biotechnology, Department of Pharmacy, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstr. 5-13, 81377 München, Germany.
| | - Dian-Jang Lee
- Pharmaceutical Biotechnology, Department of Pharmacy, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstr. 5-13, 81377 München, Germany. and Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799 München, Germany
| | - Katharina Müller
- Pharmaceutical Biotechnology, Department of Pharmacy, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstr. 5-13, 81377 München, Germany.
| | - Daniela Ponader
- Max-Planck-Institute of Colloids and Interfaces, Department of Biomolecular Systems, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Laura Hartmann
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany.
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Department of Pharmacy, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstr. 5-13, 81377 München, Germany. and Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799 München, Germany
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Upadhya A, Sangave PC. Hydrophobic and electrostatic interactions between cell penetrating peptides and plasmid DNA are important for stable non-covalent complexation and intracellular delivery. J Pept Sci 2016; 22:647-659. [DOI: 10.1002/psc.2927] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/27/2016] [Accepted: 08/24/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Archana Upadhya
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management; SVKM's NMIMS University; V.L. Mehta Road, Vile Parle (West) Mumbai 400056 Maharashtra India
| | - Preeti C. Sangave
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management; SVKM's NMIMS University; V.L. Mehta Road, Vile Parle (West) Mumbai 400056 Maharashtra India
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34
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Pigeon L, Gonçalves C, Pichon C, Midoux P. Evidence for plasmid DNA exchange after polyplex mixing. SOFT MATTER 2016; 12:7012-7019. [PMID: 27459887 DOI: 10.1039/c6sm00575f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The self-assembly of a plasmid DNA (pDNA) with cationic polymers or cationic liposomes forms nanosized supramolecular structures called lipoplexes, polyplexes and lipopolyplexes. Here, we report that when two polyplex preparations made using the same polymer and the same pDNA but labelled with two different fluorophores are mixed together, pDNA molecules are exchanged. Indeed, when Flu-pDNA complexed with histidinylated lPEI (Flu-pDNA/His-lPEI) polyplexes are mixed with Cy5-pDNA complexed with histidinylated lPEI (Cy5-pDNA/His-lPEI) polyplexes, a high quantity of polyplexes emitting dual fluorescence is observed and FRET indicates that one single polyplex contains two kinds of fluorescent pDNA molecules. This phenomenon depends on the polymer-type and the strength of the pDNA/polymer interaction. No exchange is observed with polylysine polyplexes, caged His-lPEI polyplexes, lipoplexes, lipopolyplexes or when His-lPEI polyplexes are mixed with lipoplexes. Our results suggest that aggregation or collapse of polyplexes occurs after their interaction leading to their unpackaging followed by the formation of new polyplexes with the exchange of pDNA.
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Affiliation(s)
- L Pigeon
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm and University of Orléans, 45071 Orléans cedex 02, France.
| | - C Gonçalves
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm and University of Orléans, 45071 Orléans cedex 02, France.
| | - C Pichon
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm and University of Orléans, 45071 Orléans cedex 02, France.
| | - P Midoux
- Centre de Biophysique Moléculaire, CNRS UPR4301, Inserm and University of Orléans, 45071 Orléans cedex 02, France.
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35
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Vitor MT, Bergami-Santos PC, Zômpero RHF, Cruz KSP, Pinho MP, Barbuto JAM, de la Torre LG. Cationic liposomes produced via ethanol injection method for dendritic cell therapy. J Liposome Res 2016; 27:249-263. [DOI: 10.1080/08982104.2016.1196702] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Micaela Tamara Vitor
- Department of Materials and Bioprocesses Engineering, School of Chemical Engineering, University of Campinas (Unicamp), Campinas, Brazil and
| | | | - Rafael Henrique Freitas Zômpero
- Department of Materials and Bioprocesses Engineering, School of Chemical Engineering, University of Campinas (Unicamp), Campinas, Brazil and
| | | | - Mariana Pereira Pinho
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | | | - Lucimara Gaziola de la Torre
- Department of Materials and Bioprocesses Engineering, School of Chemical Engineering, University of Campinas (Unicamp), Campinas, Brazil and
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36
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Konate K, Lindberg MF, Vaissiere A, Jourdan C, Aldrian G, Margeat E, Deshayes S, Boisguerin P. Optimisation of vectorisation property: A comparative study for a secondary amphipathic peptide. Int J Pharm 2016; 509:71-84. [PMID: 27224007 DOI: 10.1016/j.ijpharm.2016.05.030] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 05/12/2016] [Accepted: 05/13/2016] [Indexed: 02/08/2023]
Abstract
RNA interference provides a powerful technology for specific gene silencing. Therapeutic applications of small interfering RNA (siRNA) however require efficient vehicles for stable complexation and intracellular delivery. In order to enhance their cell delivery, short amphipathic peptides called cell-penetrating peptides (CPPs) have been intensively developed for the last two decades. In this context, the secondary amphipathic peptide CADY has shown to form stable siRNA complexes and to improve their cellular uptake independent of the endosomal pathway. In the present work, we have described the parameters influencing CADY nanoparticle formation (buffers, excipients, presence of serum, etc.), and have followed in details the CPP:siRNA self-assembly. Once optimal conditions were determined, we have compared the ability of seven different CADY analogues to form siRNA-loaded nanoparticles compared to CADY:siRNA. First of all, we were able to show by biophysical methods that structural polymorphism (α-helix) is an important prerequisite for stable nanoparticle formation independently of occurring sequence mutations. Luciferase assays revealed that siRNA complexed to CADY-K (shorter version) shows better knock-down efficiency on Neuro2a-Luc(+) and B16-F10-Luc(+) cells compared to CADY:siRNA. Altogether, CADY-K is an ideal candidate for further application especially with regards to ex vivo or in vivo applications.
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Affiliation(s)
- Karidia Konate
- Centre de Recherche de Biologie cellulaire de Montpellier (CRBM), CNRS UMR 5237, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
| | - Mattias F Lindberg
- Centre de Recherche de Biologie cellulaire de Montpellier (CRBM), CNRS UMR 5237, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
| | - Anaïs Vaissiere
- Centre de Recherche de Biologie cellulaire de Montpellier (CRBM), CNRS UMR 5237, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
| | - Carole Jourdan
- Centre de Recherche de Biologie cellulaire de Montpellier (CRBM), CNRS UMR 5237, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
| | - Gudrun Aldrian
- Sys2Diag, FRE3690-CNRS/ALCEDIAG, 1682 Rue de la Valsiere, 34184 Montpellier CEDEX 4, France
| | - Emmanuel Margeat
- CNRS UMR5048, Centre de Biochimie Structurale, 29 rue de Navacelles, 34090 Montpellier, France; INSERM U1054, 34090 Montpellier, France; Université de Montpellier, 34090 Montpellier, France
| | - Sébastien Deshayes
- Centre de Recherche de Biologie cellulaire de Montpellier (CRBM), CNRS UMR 5237, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France.
| | - Prisca Boisguerin
- Centre de Recherche de Biologie cellulaire de Montpellier (CRBM), CNRS UMR 5237, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France.
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37
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Insua I, Liamas E, Zhang Z, Peacock AFA, Krachler AM, Fernandez-Trillo F. Enzyme-responsive polyion complex (PIC) nanoparticles for the targeted delivery of antimicrobial polymers. Polym Chem 2016; 7:2684-2690. [PMID: 27148427 PMCID: PMC4841106 DOI: 10.1039/c6py00146g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/13/2016] [Indexed: 12/30/2022]
Abstract
Here we present new enzyme-responsive polyion complex (PIC) nanoparticles prepared from antimicrobial poly(ethylene imine) and an anionic enzyme-responsive peptide targeting Pseudomonas aeruginosa's elastase.
Here we present new enzyme-responsive polyion complex (PIC) nanoparticles prepared from antimicrobial poly(ethylene imine) and an anionic enzyme-responsive peptide targeting Pseudomonas aeruginosa's elastase. The synthetic conditions used to prepare these nanomaterials allowed us to optimise particle size and charge, and their stability under physiological conditions. We demonstrate that these enzyme responsive PIC nanoparticles are selectively degraded in the presence of P. aeruginosa elastase without being affected by other endogenous elastases. This enzyme-responsive PIC particle can exert an elastase-specific antimicrobial effect against P. aeruginosa without affecting non-pathogenic strains of these bacteria. These targeted enzyme-responsive PIC nanoparticles constitute a novel platform for the delivery of antimicrobial peptides and polymers, and can be a powerful tool in the current race against antimicrobial resistance.
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Affiliation(s)
- Ignacio Insua
- School of Chemistry , University of Birmingham , B15 2TT Birmingham , UK
| | - Evangelos Liamas
- School of Chemical Engineering , University of Birmingham , B15 2TT Birmingham , UK
| | - Zhenyu Zhang
- School of Chemical Engineering , University of Birmingham , B15 2TT Birmingham , UK
| | - Anna F A Peacock
- School of Chemistry , University of Birmingham , B15 2TT Birmingham , UK
| | - Anne Marie Krachler
- School of Biosciences , University of Birmingham , B15 2TT Birmingham , UK ; Institute of Microbiology and Infection , University of Birmingham , B15 2TT Birmingham , UK .
| | - Francisco Fernandez-Trillo
- School of Chemistry , University of Birmingham , B15 2TT Birmingham , UK ; Institute of Microbiology and Infection , University of Birmingham , B15 2TT Birmingham , UK .
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38
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Fabrication of dual responsive co-delivery system based on three-armed peptides for tumor therapy. Biomaterials 2016; 92:25-35. [PMID: 27031930 DOI: 10.1016/j.biomaterials.2016.03.031] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/17/2016] [Accepted: 03/17/2016] [Indexed: 12/11/2022]
Abstract
Introducing drugs into gene delivery systems to fabricate co-delivery systems for synergy therapy has become a promising strategy for tumor therapy. In this study, a dual responsive co-delivery system RHD/p53 was fabricated to enhance the antitumor efficacy with a low dose of doxorubicin (DOX). The reducible branched cationic polypeptide (RBCP), which was cross-linked via the thiol groups of two three-armed cationic peptides (CRR)2KRRC and (CHH)2KHHC, was designated as RH. Then, DOX was immobilized on RH via pH-sensitive hydrazone bonds to obtain RHD. The positively charged RHD could compress p53 plasmid to form RHD/p53 complexes. After RHD/p53 complexes accumulated in tumor sites, the ability of cell penetrating by cationic peptide (CRR)2KRRC would facilitate the cellular internalization of complexes. Then, the complexes would be trapped in endosome, and the cleavage of hydrazone bonds in the intracellular acidic endosome could lead to pH-induced release of DOX. Additionally, the ability of protonation by (CHH)2KHHC could promote the escape of complexes from endosome to cytoplasm. Due to the cleavage of disulfide bonds triggered by the high-content GSH in cytoplasm, the complexes would be degraded and released p53 for co-therapy to improve antitumor efficacy. Both in vitro and in vivo studies indicated that dual responsive co-delivery system RHD/p53 could enhance antitumor efficacy, which provides a useful strategy for co-delivery of different therapeutic agents in tumor treatment.
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39
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Tanaka H, Sato Y, Harashima H, Akita H. Cellular environment-responsive nanomaterials for use in gene and siRNA delivery: molecular design for biomembrane destabilization and intracellular collapse. Expert Opin Drug Deliv 2016; 13:1015-27. [DOI: 10.1517/17425247.2016.1154531] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hiroki Tanaka
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Yusuke Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | | | - Hidetaka Akita
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
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40
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Tissue-specific Calibration of Real-time PCR Facilitates Absolute Quantification of Plasmid DNA in Biodistribution Studies. MOLECULAR THERAPY - NUCLEIC ACIDS 2016; 5:e371. [PMID: 27701400 PMCID: PMC5095683 DOI: 10.1038/mtna.2016.79] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Accepted: 08/18/2016] [Indexed: 11/27/2022]
Abstract
Analysis of the tissue distribution of plasmid DNA after administration of nonviral gene delivery systems is best accomplished using quantitative real-time polymerase chain reaction (qPCR), although published strategies do not allow determination of the absolute mass of plasmid delivered to different tissues. Generally, data is expressed as the mass of plasmid relative to the mass of genomic DNA (gDNA) in the sample. This strategy is adequate for comparisons of efficiency of delivery to a single site but it does not allow direct comparison of delivery to multiple tissues, as the mass of gDNA extracted per unit mass of each tissue is different. We show here that by constructing qPCR standard curves for each tissue it is possible to determine the dose of intact plasmid remaining in each tissue, which is a more useful parameter when comparing the fates of different formulations of DNA. We exemplify the use of this tissue-specific qPCR method by comparing the delivery of naked DNA, cationic DNA complexes, and neutral PEGylated DNA complexes after intramuscular injection. Generally, larger masses of intact plasmid were present 24 hours after injection of DNA complexes, and neutral complexes resulted in delivery of a larger mass of intact plasmid to the spleen.
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41
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Bartolami E, Bouillon C, Dumy P, Ulrich S. Bioactive clusters promoting cell penetration and nucleic acid complexation for drug and gene delivery applications: from designed to self-assembled and responsive systems. Chem Commun (Camb) 2016; 52:4257-73. [DOI: 10.1039/c5cc09715k] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Recent developments in the (self-)assembly of cationic clusters promoting nucleic acids complexation and cell penetration open the door to applications in drug and gene delivery.
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Affiliation(s)
- Eline Bartolami
- Institut des Biomolécules Max Mousseron (IBMM)
- UMR 5247
- CNRS
- Université Montpellier
- ENSCM
| | - Camille Bouillon
- Institut des Biomolécules Max Mousseron (IBMM)
- UMR 5247
- CNRS
- Université Montpellier
- ENSCM
| | - Pascal Dumy
- Institut des Biomolécules Max Mousseron (IBMM)
- UMR 5247
- CNRS
- Université Montpellier
- ENSCM
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM)
- UMR 5247
- CNRS
- Université Montpellier
- ENSCM
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42
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Chen S, Rong L, Lei Q, Cao PX, Qin SY, Zheng DW, Jia HZ, Zhu JY, Cheng SX, Zhuo RX, Zhang XZ. A surface charge-switchable and folate modified system for co-delivery of proapoptosis peptide and p53 plasmid in cancer therapy. Biomaterials 2015; 77:149-63. [PMID: 26599622 DOI: 10.1016/j.biomaterials.2015.11.013] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 11/02/2015] [Accepted: 11/06/2015] [Indexed: 12/31/2022]
Abstract
To improve the tumor therapeutic efficiency and reduce undesirable side effects, ternary FK/p53/PEG-PLL(DA) complexes with a detachable surface shielding layer were designed. The FK/p53/PEG-PLL(DA) complexes were fabricated by coating the folate incorporated positively charged FK/p53 complexes with charge-switchable PEG-shield (PEG-PLL(DA)) through electrostatic interaction. At the physiological pH 7.4 in the bloodstream, PEG-PLL(DA) could extend the circulating time by shielding the positively charged FK/p53 complexes. After the accumulation of the FK/p53/PEG-PLL(DA) complexes in tumor sites, tumor-acidity-triggered charge switch led to the detachment of PEG-PLL(DA) from the FK/p53 complexes, and resulted in efficient tumor cell entry by folate-mediated uptake and electrostatic attraction. Stimulated by the high content glutathione (GSH) in cytoplasm, the cleavage of disulfide bond resulted in the liberation of proapoptosis peptide C-KLA(TPP) and the p53 gene, which exerted the combined tumor therapy by regulating both intrinsic and extrinsic apoptotic pathways. Both in vitro and in vivo studies confirmed that the ternary detachable complexes FK/p53/PEG-PLL(DA) could enhance antitumor efficacy and reduce adverse effects to normal cells. These findings indicate that the tumor-triggered decomplexation of FK/p53/PEG-PLL(DA) supplies a useful strategy for targeting delivery of different therapeutic agents in synergetic anticancer therapy.
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Affiliation(s)
- Si Chen
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Lei Rong
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Qi Lei
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Peng-Xi Cao
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Si-Yong Qin
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Di-Wei Zheng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Hui-Zhen Jia
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Jing-Yi Zhu
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Si-Xue Cheng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Ren-Xi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China.
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43
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Crowley ST, Rice KG. "Evolving nanoparticle gene delivery vectors for the liver: What has been learned in 30 years". J Control Release 2015; 219:457-470. [PMID: 26439664 DOI: 10.1016/j.jconrel.2015.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 10/01/2015] [Accepted: 10/02/2015] [Indexed: 12/18/2022]
Abstract
Nonviral gene delivery to the liver has been under evolution for nearly 30years. Early demonstrations established relatively simple nonviral vectors could mediate gene expression in HepG2 cells which understandably led to speculation that these same vectors would be immediately successful at transfecting primary hepatocytes in vivo. However, it was soon recognized that the properties of a nonviral vector resulting in efficient transfection in vitro were uncorrelated with those needed to achieve efficient nonviral transfection in vivo. The discovery of major barriers to liver gene transfer has set the field on a course to design biocompatible vectors that demonstrate increased DNA stability in the circulation with correlating expression in liver. The improved understanding of what limits nonviral vector gene transfer efficiency in vivo has resulted in more sophisticated, low molecular weight vectors that allow systematic optimization of nanoparticle size, charge and ligand presentation. While the field has evolved DNA nanoparticles that are stable in the circulation, target hepatocytes, and deliver DNA to the cytosol, breaching the nucleus remains the last major barrier to a fully successful nonviral gene transfer system for the liver. The lessons learned along the way are fundamentally important to the design of all systemically delivered nanoparticle nonviral gene delivery systems.
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Affiliation(s)
- Samuel T Crowley
- Division of Medicinal and Natural Products Chemistry, College of Pharmacy, University of Iowa, Iowa City, IA 52242,USA
| | - Kevin G Rice
- Division of Medicinal and Natural Products Chemistry, College of Pharmacy, University of Iowa, Iowa City, IA 52242,USA.
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44
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Douat C, Aisenbrey C, Antunes S, Decossas M, Lambert O, Bechinger B, Kichler A, Guichard G. A cell-penetrating foldamer with a bioreducible linkage for intracellular delivery of DNA. Angew Chem Int Ed Engl 2015; 54:11133-7. [PMID: 26246005 DOI: 10.1002/anie.201504884] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 07/04/2015] [Indexed: 12/21/2022]
Abstract
Despite significant advances in foldamer chemistry, tailored delivery systems based on foldamer architectures, which provide a high level of control over secondary structure, are curiously rare among non-viral technologies for transporting nucleic acids into cells. A potent pH-responsive, bioreducible cell-penetrating foldamer (CPF) was developed through covalent dimerization of a short (8-mer) amphipathic oligourea sequence bearing histidine-type units. This CPF exhibits a high capacity to assemble with pDNA and mediates efficient delivery of nucleic acids into the cell. Furthermore, it does not adversely affect cellular viability and was shown to compare favorably with a cognate peptide transfection agent based on His-rich sequences.
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Affiliation(s)
- Céline Douat
- Univ. Bordeaux, CBMN, UMR 5248, Institut Européen de Chimie et Biologie (IECB), 2 rue Robert Escarpit, 33607 Pessac (France).,CNRS, CBMN, UMR 5248, 33600 Pessac (France)
| | - Christopher Aisenbrey
- Membrane Biophysics and NMR, Chemistry Institute, University of Strasbourg-CNRS UMR7177, 4, Rue Blaise Pascal, 67008 Strasbourg (France)
| | - Stéphanie Antunes
- Univ. Bordeaux, CBMN, UMR 5248, Institut Européen de Chimie et Biologie (IECB), 2 rue Robert Escarpit, 33607 Pessac (France).,CNRS, CBMN, UMR 5248, 33600 Pessac (France)
| | - Marion Decossas
- CNRS, CBMN, UMR 5248, 33600 Pessac (France).,Univ. Bordeaux, CBMN, UMR 5248, All. Geoffroy Saint-Hilaire, 33600 Pessac (France)
| | - Olivier Lambert
- CNRS, CBMN, UMR 5248, 33600 Pessac (France).,Univ. Bordeaux, CBMN, UMR 5248, All. Geoffroy Saint-Hilaire, 33600 Pessac (France)
| | - Burkhard Bechinger
- Membrane Biophysics and NMR, Chemistry Institute, University of Strasbourg-CNRS UMR7177, 4, Rue Blaise Pascal, 67008 Strasbourg (France)
| | - Antoine Kichler
- Laboratoire "Vecteurs: Synthèse et Applications Thérapeutiques", UMR 7199 CNRS-Université de Strasbourg, Labex Medalis, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch cedex (France).
| | - Gilles Guichard
- Univ. Bordeaux, CBMN, UMR 5248, Institut Européen de Chimie et Biologie (IECB), 2 rue Robert Escarpit, 33607 Pessac (France). .,CNRS, CBMN, UMR 5248, 33600 Pessac (France).
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45
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Douat C, Aisenbrey C, Antunes S, Decossas M, Lambert O, Bechinger B, Kichler A, Guichard G. A Cell-Penetrating Foldamer with a Bioreducible Linkage for Intracellular Delivery of DNA. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504884] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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46
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Takemoto H, Miyata K, Nishiyama N, Kataoka K. Bioresponsive polymer-based nucleic acid carriers. ADVANCES IN GENETICS 2015; 88:289-323. [PMID: 25409610 DOI: 10.1016/b978-0-12-800148-6.00010-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nucleic acid carriers need to possess multifunctionality for overcoming biological barriers, such as the stable encapsulation of nucleic acids in extracellular milieu, internalization by target cells, controlled intracellular distribution, and release of nucleic acids at the target site of action. To fulfill these stepwise functionalities, "bioresponsive" polymers that can alter their structure responding to site-specific biological signals are highly useful. Notably, pH, redox potential, and enzymatic activities vary along with microenvironments in the body, and thus, the responsiveness to these signals enables to construct nucleic acid carriers with programmed functionalities. This chapter describes the design of bioresponsive polymers that respond to various biological microenvironments for smart nucleic acids delivery.
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Affiliation(s)
- Hiroyasu Takemoto
- Polymer Chemistry Division, Chemical Resources Laboratory, Tokyo Institute of Technology, Japan
| | - Kanjiro Miyata
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Japan
| | - Nobuhiro Nishiyama
- Polymer Chemistry Division, Chemical Resources Laboratory, Tokyo Institute of Technology, Japan
| | - Kazunori Kataoka
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Japan; Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Japan
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47
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Bartolami E, Bessin Y, Gervais V, Dumy P, Ulrich S. Dynamic Expression of DNA Complexation with Self-assembled Biomolecular Clusters. Angew Chem Int Ed Engl 2015; 54:10183-7. [DOI: 10.1002/anie.201504047] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 06/11/2015] [Indexed: 12/18/2022]
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48
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Bartolami E, Bessin Y, Gervais V, Dumy P, Ulrich S. Dynamic Expression of DNA Complexation with Self-assembled Biomolecular Clusters. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504047] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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49
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Lächelt U, Wagner E. Nucleic Acid Therapeutics Using Polyplexes: A Journey of 50 Years (and Beyond). Chem Rev 2015; 115:11043-78. [DOI: 10.1021/cr5006793] [Citation(s) in RCA: 418] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ulrich Lächelt
- Pharmaceutical
Biotechnology, Department of Pharmacy, Ludwig Maximilians Universität, 81377 Munich, Germany
- Nanosystems
Initiative
Munich (NIM), 80799 Munich, Germany
| | - Ernst Wagner
- Pharmaceutical
Biotechnology, Department of Pharmacy, Ludwig Maximilians Universität, 81377 Munich, Germany
- Nanosystems
Initiative
Munich (NIM), 80799 Munich, Germany
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50
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He D, Wagner E. Defined Polymeric Materials for Gene Delivery. Macromol Biosci 2015; 15:600-12. [DOI: 10.1002/mabi.201400524] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 01/12/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Dongsheng He
- Pharmaceutical Biotechnology; Center for System-based Drug Research and Center for NanoScience (CeNS); Ludwig-Maximilians-University; 81377 Munich Germany
| | - Ernst Wagner
- Pharmaceutical Biotechnology; Center for System-based Drug Research and Center for NanoScience (CeNS); Ludwig-Maximilians-University; 81377 Munich Germany
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