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Petukhov IA, Puchkov PA, Morozova NG, Zenkova MA, Maslov MA. The Synthesis and Transfection Activity of Disulfide Polycationic Amphiphiles. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2023; 49:41-51. [PMID: 37192981 PMCID: PMC10156423 DOI: 10.1134/s1068162023010235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/18/2022] [Accepted: 08/18/2022] [Indexed: 05/18/2023]
Abstract
Some new polycationic amphiphiles containing a disulfide group were synthesized. Cationic liposomes formed from the compounds synthesized and a helper lipid 1,2-dioleoyl-sn-glycero-3-phosphatidylethanolamine were not toxic for HEK293 and HeLa cells and were highly effective when delivering a fluorescently labeled oligodeoxyribonucleotide. The efficacy of plasmid DNA delivery depended on the cell line and the amphiphile structure, liposomes based on tetracationic amphiphiles being the most effective transfectants. These liposomes can be used for in vitro transfection of eukaryotic cells as well as for further in vivo biological studies.
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Affiliation(s)
- I. A. Petukhov
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| | - P. A. Puchkov
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| | - N. G. Morozova
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| | - M. A. Zenkova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - M. A. Maslov
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
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2
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Maiti B, Bhattacharya S. Liposomal nanoparticles based on steroids and isoprenoids for nonviral gene delivery. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2021; 14:e1759. [PMID: 34729941 DOI: 10.1002/wnan.1759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 07/24/2021] [Accepted: 08/10/2021] [Indexed: 11/11/2022]
Abstract
Natural lipid molecules are an essential part of life as they constitute the membrane of cells and organelle. In most of these cases, the hydrophobicity of natural lipids is contributed by alkyl chains. Although natural lipids with a nonfatty acid hydrophobic backbone are quite rare, steroids and isoprenoids have been strong candidates as part of a lipid. Over the years, these natural molecules (steroid and isoprenoids) have been used to make either lipid-based nanoparticle or functionalize in such a way that it could form nano assembly alone for therapeutic delivery. Here we mainly focus on the synthetic functionalized version of these natural molecules which forms cationic liposomal nanoparticles (LipoNPs). These cationic LipoNPs were further used to deliver various negatively charged genetic materials in the form of pDNA, siRNA, mRNA (nucleic acids), and so on. This article is categorized under: Biology-Inspired Nanomaterials > Lipid-Based Structures.
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Affiliation(s)
- Bappa Maiti
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata, India
| | - Santanu Bhattacharya
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata, India.,School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata, India.,Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
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3
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Abstract
RNA-based therapeutics have shown great promise in treating a broad spectrum of diseases through various mechanisms including knockdown of pathological genes, expression of therapeutic proteins, and programmed gene editing. Due to the inherent instability and negative-charges of RNA molecules, RNA-based therapeutics can make the most use of delivery systems to overcome biological barriers and to release the RNA payload into the cytosol. Among different types of delivery systems, lipid-based RNA delivery systems, particularly lipid nanoparticles (LNPs), have been extensively studied due to their unique properties, such as simple chemical synthesis of lipid components, scalable manufacturing processes of LNPs, and wide packaging capability. LNPs represent the most widely used delivery systems for RNA-based therapeutics, as evidenced by the clinical approvals of three LNP-RNA formulations, patisiran, BNT162b2, and mRNA-1273. This review covers recent advances of lipids, lipid derivatives, and lipid-derived macromolecules used in RNA delivery over the past several decades. We focus mainly on their chemical structures, synthetic routes, characterization, formulation methods, and structure-activity relationships. We also briefly describe the current status of representative preclinical studies and clinical trials and highlight future opportunities and challenges.
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Affiliation(s)
- Yuebao Zhang
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Changzhen Sun
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Chang Wang
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Katarina E Jankovic
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Yizhou Dong
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Department of Biomedical Engineering, The Center for Clinical and Translational Science, The Comprehensive Cancer Center, Dorothy M. Davis Heart & Lung Research Institute, Department of Radiation Oncology, The Ohio State University, Columbus, Ohio 43210, United States
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4
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Dutta K, Das R, Medeiros J, Thayumanavan S. Disulfide Bridging Strategies in Viral and Nonviral Platforms for Nucleic Acid Delivery. Biochemistry 2021; 60:966-990. [PMID: 33428850 PMCID: PMC8753971 DOI: 10.1021/acs.biochem.0c00860] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Self-assembled nanostructures that are sensitive to environmental stimuli are promising nanomaterials for drug delivery. In this class, disulfide-containing redox-sensitive strategies have gained enormous attention because of their wide applicability and simplicity of nanoparticle design. In the context of nucleic acid delivery, numerous disulfide-based materials have been designed by relying on covalent or noncovalent interactions. In this review, we highlight major advances in the design of disulfide-containing materials for nucleic acid encapsulation, including covalent nucleic acid conjugates, viral vectors or virus-like particles, dendrimers, peptides, polymers, lipids, hydrogels, inorganic nanoparticles, and nucleic acid nanostructures. Our discussion will focus on the context of the design of materials and their impact on addressing the current shortcomings in the intracellular delivery of nucleic acids.
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Affiliation(s)
- Kingshuk Dutta
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Ritam Das
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
- The Center for Bioactive Delivery- Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Jewel Medeiros
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
- The Center for Bioactive Delivery- Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
- Department of Biomedical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
- Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, United States
- The Center for Bioactive Delivery- Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003, United States
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5
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Lou J, Best MD. Strategies for altering lipid self-assembly to trigger liposome cargo release. Chem Phys Lipids 2020; 232:104966. [PMID: 32888913 DOI: 10.1016/j.chemphyslip.2020.104966] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/18/2020] [Accepted: 08/28/2020] [Indexed: 01/21/2023]
Abstract
While liposomes have proven to be effective drug delivery nanocarriers, their therapeutic attributes could be improved through the development of clinically viable triggered release strategies in which encapsulated drug contents could be selectively released at the sites of diseased cells. As such, a significant amount of research has been reported involving the development of stimuli-responsive liposomes and a broad range of strategies have been explored for driving content release. These have included the introduction of trigger groups at either the lipid headgroup or within the acyl chains that alter lipid self-assembly properties of known lipids as well as the rational design of lipid analogs programed to undergo conformational changes induced by events such as binding interactions. This review article describes advances in the design of stimuli-responsive liposome strategies with an eye towards emerging trends in the field.
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Affiliation(s)
- Jinchao Lou
- Department of Chemistry, University of Tennessee, 1420 Circle Dr, Knoxville, TN, 37996, USA
| | - Michael D Best
- Department of Chemistry, University of Tennessee, 1420 Circle Dr, Knoxville, TN, 37996, USA.
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Tanaka H, Sakurai Y, Anindita J, Akita H. Development of lipid-like materials for RNA delivery based on intracellular environment-responsive membrane destabilization and spontaneous collapse. Adv Drug Deliv Rev 2020; 154-155:210-226. [PMID: 32650040 DOI: 10.1016/j.addr.2020.07.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/26/2020] [Accepted: 07/02/2020] [Indexed: 01/01/2023]
Abstract
Messenger RNA and small interfering RNA are attractive modalities for curing diseases by complementation or knock-down of proteins. For success of these RNAs, a drug delivery system (DDS) is required to control a pharmacokinetics, to enhance cellular uptake, to overcome biological membranes, and to release the cargo into the cytoplasm. Based on past research, developing nanoparticles that are neutrally charged have been the mainstream of their development. Also, the materials are further mounted with pH- and/or reducing environment-responsive units. In this review, we summarize progress made in the molecular design of these materials. We also focus on the importance of the hydrophobic scaffold for tissue/cell targeting, intracellular trafficking, and immune responses. As a practical example, the design concept of the SS-cleavable and pH-activated lipid-like material (ssPalm) and subsequent molecular modification tailored to the RNA-based medical application is discussed.
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Bej R, Dey P, Ghosh S. Disulfide chemistry in responsive aggregation of amphiphilic systems. SOFT MATTER 2020; 16:11-26. [PMID: 31776542 DOI: 10.1039/c9sm01960j] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The dynamic nature of the disulfide bond has enhanced the potential for disulfide based amphiphiles in the emerging biomedical field. Disulfide containing amphiphiles have extensively been used for constructing wide ranging soft nanostructures as potential candidates for delivery of drugs, proteins and genes owing to their degradable nature in the presence of intracellular glutathione (present in a many fold excess compared to the extracellular milieu). This degradable nature of amphiphiles is not only useful to deliver therapeutics but it also eliminates the toxicity issues associated with the carrier after delivery of such therapeutics. Therefore, these bioreducible and biocompatible nano-aggregates inspired researchers to use them as vehicles for therapeutic delivery and as a result the literature of disulfide containing amphiphiles has been intensified. This review article highlights the structural diversity in disulfide containing amphiphilic small molecule and polymeric systems, structural effects on their aqueous aggregation, redox-responsive disassembly and biological applications. Furthermore, the use of disulfide chemistry towards the design of cell penetrating polymers has also been discussed. Finally a brief perspective on some future opportunities of these systems is provided.
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Affiliation(s)
- Raju Bej
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
| | - Pradip Dey
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
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8
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Zou Y, Wan L, Blacklock J, Xie L, Carroll S, Oupicky D, Mao G. In Situ AFM Analysis Investigating Disassembly of DNA Nanoparticles and Nanofilms. Methods Mol Biol 2019; 1943:199-209. [PMID: 30838618 DOI: 10.1007/978-1-4939-9092-4_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Synthetic vector-based gene delivery continues to gain strength as viable alternatives to viral vectors due to safety and other concerns. DNA release dynamics is key to the understanding and control of gene delivery from nanosystems. Here we describe atomic force microscope (AFM) application to the understanding of DNA release dynamics from bioreducible polycation-based nanosystems. The two nanosystems are polyplex nanoparticles and layer-by-layer (LbL) films.
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Affiliation(s)
- Yi Zou
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Lei Wan
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Jenifer Blacklock
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Lingxiao Xie
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Sean Carroll
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - David Oupicky
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI, USA
- University of Nebraska Medical Center, Omaha, NE, USA
| | - Guangzhao Mao
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA.
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9
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Liu Q, Su RC, Yi WJ, Zheng LT, Lu SS, Zhao ZG. pH and reduction dual-responsive dipeptide cationic lipids with α-tocopherol hydrophobic tail for efficient gene delivery. Eur J Med Chem 2017; 129:1-11. [PMID: 28214630 DOI: 10.1016/j.ejmech.2017.02.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 01/14/2017] [Accepted: 02/05/2017] [Indexed: 01/28/2023]
Abstract
A series of tocopherol-based cationic lipid 3a-3f bearing a pH-sensitive imidazole moiety in the dipeptide headgroup and a reduction-responsive disulfide linkage were designed and synthesized. Acid-base titration of these lipids showed good buffering capacities. The liposomes formed from 3 and co-lipid 1, 2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) could efficiently bind and condense DNA into nanoparticles. Gel binding and HPLC assays confirmed the encapsulated DNA could release from lipoplexes 3 upon addition of 10 mM glutathione (GSH). MTT assays in HEK 293 cells demonstrated that lipoplexes 3 had low cytotoxicity. The in vitro gene transfection studies showed cationic dipeptide headgroups clearly affected the transfection efficiency (TE), and arginine-histidine based dipeptide lipid 3f give the best TE, which was 30.4 times higher than Lipofectamine 3000 in the presence of 10% serum. Cell-uptake assays indicated that basic amino acid containing dipeptide cationic lipids exhibited more efficient cell uptake than serine and aromatic amino acids based dipeptide lipids. Confocal laser scanning microscopy (CLSM) studies corroborated that 3 could efficiently deliver and release DNA into the nuclei of HeLa cells. These results suggest that tocopherol-based dipeptide cationic lipids with pH and reduction dual-sensitive characteristics might be promising non-viral gene delivery vectors.
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Affiliation(s)
- Qiang Liu
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China.
| | - Rong-Chuan Su
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China
| | - Wen-Jing Yi
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China
| | - Li-Ting Zheng
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China
| | - Shan-Shan Lu
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China
| | - Zhi-Gang Zhao
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China.
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10
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Su RC, Liu Q, Yi WJ, Zheng LT, Zhao ZG. Lipoic acid functionalized amino acids cationic lipids as gene vectors. Bioorg Med Chem Lett 2016; 26:4692-4697. [PMID: 27570244 DOI: 10.1016/j.bmcl.2016.08.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 07/28/2016] [Accepted: 08/18/2016] [Indexed: 12/15/2022]
Abstract
A series of reducible cationic lipids 4a-4f with different amino acid polar-head groups were prepared. The novel lipid contains a hydrophobic lipoic acid (LA) moiety, which can be reduced under reductive conditions to release of the encapsulated plasmid DNA. The particle size, zeta potential and cellular uptake of lipoplexes formed with DNA, as well as the transfection efficacy (TE) were characterized. The TE of the cationic lipid based on arginine was especially high, and was 2.5times higher than that of a branched polyethylenimine in the presence of 10% serum.
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Affiliation(s)
- Rong-Chuan Su
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China
| | - Qiang Liu
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China.
| | - Wen-Jing Yi
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China
| | - Li-Ting Zheng
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China
| | - Zhi-Gang Zhao
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China.
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11
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Zheng LT, Yi WJ, Su RC, Liu Q, Zhao ZG. Reducible Amino Acid Based Cationic Lipids as Highly Efficient and Serum-Tolerant Gene Vectors. Chempluschem 2015; 81:125-134. [DOI: 10.1002/cplu.201500307] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 09/03/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Li-Ting Zheng
- College of Chemistry and Environmental Protection Engineering; Southwest University for Nationalities; Chengdu 610041 P. R. China
| | - Wen-Jing Yi
- College of Chemistry and Environmental Protection Engineering; Southwest University for Nationalities; Chengdu 610041 P. R. China
| | - Rong-Chuan Su
- College of Chemistry and Environmental Protection Engineering; Southwest University for Nationalities; Chengdu 610041 P. R. China
| | - Qiang Liu
- College of Chemistry and Environmental Protection Engineering; Southwest University for Nationalities; Chengdu 610041 P. R. China
| | - Zhi-Gang Zhao
- College of Chemistry and Environmental Protection Engineering; Southwest University for Nationalities; Chengdu 610041 P. R. China
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12
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Rata-Aguilar A, Segovia-Ramos N, Jódar-Reyes AB, Ramos-Pérez V, Borrós S, Martín-Rodríguez A, Ortega-Vinuesa JL. Complexation and release of DNA in polyplexes formed with reducible linear poly(β-amino esters). Colloids Surf B Biointerfaces 2015; 133:339-46. [PMID: 26125487 DOI: 10.1016/j.colsurfb.2015.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 05/28/2015] [Accepted: 06/01/2015] [Indexed: 10/23/2022]
Abstract
Designing nanocarriers for gene delivery is a multidisciplinary challenge that involves not only DNA condensation with biocompatible polymers, but also DNA-release processes. Once the genetic material is introduced into the cell, the rupture of degradable bonds permits the unpacking and release of the load. In this work, a dual-degradable polycation - composed by a linear poly(β-amino ester) chain in which ester and disulfide bonds coexist - has been used to condense a DNA plasmid. The goal was to reinforce the spontaneous hydrolysis of the ester groups with the intracellular break-up of the disulfide bonds, since these reducible bonds are degraded in the reductive intracellular environment. For a comparative study, two poly(β-amino ester) molecules differing only in the presence (or absence) of some SS bonds have been tested. DNA condensation, physico-chemical characterization of the polyplexes formed, and degradation studies have been carried out at pH 5 and pH 7. The acidic conditions gave the best nanoparticles, due to a better solubilization of both polymers and to a higher stability of the ester bonds. Despite the synthesis and storage of polyplexes were much more appropriate at pH 5, transfection efficiency in HeLa cells was similar irrespective the original pH used. Only in those polyplexes formed at low polymer:DNA ratios (i.e. 5 and 10 (w/w)) was transfection more effective when the plasmid was condensed at an acidic pH. With regard to the DNA-release efficiency in the intracellular medium, degradation of the polymers was practically governed by the rapid hydrolysis of the ester groups, this spontaneous and rapid process masking, unfortunately, any potential contribution associated with the breakup of the disulfide bonds.
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Affiliation(s)
- Azahara Rata-Aguilar
- Biocolloid and Fluid Physics Group, Department of Applied Physics, University of Granada, 18071 Granada, Spain
| | - Nathaly Segovia-Ramos
- Group of Material Engineering GEMAT-IQS, University of Ramon Llull, 08017 Barcelona, Spain
| | - Ana Belén Jódar-Reyes
- Biocolloid and Fluid Physics Group, Department of Applied Physics, University of Granada, 18071 Granada, Spain
| | - Víctor Ramos-Pérez
- Group of Material Engineering GEMAT-IQS, University of Ramon Llull, 08017 Barcelona, Spain
| | - Salvador Borrós
- Group of Material Engineering GEMAT-IQS, University of Ramon Llull, 08017 Barcelona, Spain
| | - Antonio Martín-Rodríguez
- Biocolloid and Fluid Physics Group, Department of Applied Physics, University of Granada, 18071 Granada, Spain
| | - Juan Luis Ortega-Vinuesa
- Biocolloid and Fluid Physics Group, Department of Applied Physics, University of Granada, 18071 Granada, Spain.
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Ercole F, Whittaker MR, Quinn JF, Davis TP. Cholesterol Modified Self-Assemblies and Their Application to Nanomedicine. Biomacromolecules 2015; 16:1886-914. [DOI: 10.1021/acs.biomac.5b00550] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Francesca Ercole
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Michael R. Whittaker
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - John F. Quinn
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Thomas P. Davis
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Department
of Chemistry, University of Warwick, Coventry, ULCV4 7AL, United Kingdom
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14
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Abstract
The use of nanoparticulate pharmaceutical drug delivery systems (NDDSs) to enhance the in vivo effectiveness of drugs is now well established. The development of multifunctional and stimulus-sensitive NDDSs is an active area of current research. Such NDDSs can have long circulation times, target the site of the disease and enhance the intracellular delivery of a drug. This type of NDDS can also respond to local stimuli that are characteristic of the pathological site by, for example, releasing an entrapped drug or shedding a protective coating, thus facilitating the interaction between drug-loaded nanocarriers and target cells or tissues. In addition, imaging contrast moieties can be attached to these carriers to track their real-time biodistribution and accumulation in target cells or tissues. Here, I highlight recent developments with multifunctional and stimuli-sensitive NDDSs and their therapeutic potential for diseases including cancer, cardiovascular diseases and infectious diseases.
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15
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Wang M, Alberti K, Varone A, Pouli D, Georgakoudi I, Xu Q. Enhanced intracellular siRNA delivery using bioreducible lipid-like nanoparticles. Adv Healthc Mater 2014; 3:1398-403. [PMID: 24574196 DOI: 10.1002/adhm.201400039] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Indexed: 11/06/2022]
Abstract
A new library of lipid-like nanoparticles (lipidoids) comprising disulfide bond is developed for siRNA delivery. Bioreducible lipidoids deliver siRNA with greater efficiency than nonbioreducible lipidoids with similar chemical structures. A siRNA release investigation, as well as an intracellular siRNA trafficking study, reveals that the degradation of bioreducible lipidoid in a strongly reductive intracellular environment boosts siRNA release and enhances siRNA gene knockdown efficiency.
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Affiliation(s)
- Ming Wang
- Department of Biomedical Engineering; Tufts University; 4 Colby Street Medford MA 02155 USA
| | - Kyle Alberti
- Department of Biomedical Engineering; Tufts University; 4 Colby Street Medford MA 02155 USA
| | - Antonio Varone
- Department of Biomedical Engineering; Tufts University; 4 Colby Street Medford MA 02155 USA
| | - Dimitria Pouli
- Department of Biomedical Engineering; Tufts University; 4 Colby Street Medford MA 02155 USA
| | - Irene Georgakoudi
- Department of Biomedical Engineering; Tufts University; 4 Colby Street Medford MA 02155 USA
| | - Qiaobing Xu
- Department of Biomedical Engineering; Tufts University; 4 Colby Street Medford MA 02155 USA
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16
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Li J, Cheng D, Yin T, Chen W, Lin Y, Chen J, Li R, Shuai X. Copolymer of poly(ethylene glycol) and poly(L-lysine) grafting polyethylenimine through a reducible disulfide linkage for siRNA delivery. NANOSCALE 2014; 6:1732-1740. [PMID: 24346086 DOI: 10.1039/c3nr05024f] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
siRNA therapy research has primarily focused on the synthesis and development of effective siRNA delivery vectors with easy biodegradability and low toxicity. In the present study, we synthesized a ternary copolymer mPEG-b-PLL-g-(ss-lPEI), denoted as PLI, by introducing disulfide bond linkages to graft low molecular weight linear polyethylenimine (lPEI) to the block copolymer of poly(L-lysine) (PLL) and poly(ethylene glycol) (PEG) for siRNA delivery. The PLL block and disulfide linkage rendered the carrier biodegradability, while lPEI grafting brought about the proton buffering capacity for lysosomal siRNA release and low cationic toxicity. Conjugation of a single chain monoclonal antibody (Herceptin) to the carrier as a targeting ligand for the Her2/neu receptor significantly increased the transfection activity of the copolymer/siRNA nanocomplex (i.e. the polyplex) in Skov-3, a human ovarian cancer cell line. Determination of gene expression at both the mRNA and protein levels demonstrated that Her2-targeted delivery of siRNA (XIAP siRNA) effectively downregulated the targeted XIAP (X-linked inhibitor of apoptosis protein) gene, resulting in enhanced cancer cell apoptosis and improved therapeutic efficacy in vitro and in vivo. The distinct features of low cytotoxicity, easy degradability, and high siRNA transfection efficiency make the copolymer a promising candidate for siRNA therapy in tumors.
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Affiliation(s)
- Jingguo Li
- PCFM Lab of Ministry of Education, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China.
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Fraix A, Le Gall T, Berchel M, Denis C, Lehn P, Montier T, Jaffrès PA. Cationic lipophosphoramidates with two disulfide motifs: synthesis, behaviour in reductive media and gene transfection activity. Org Biomol Chem 2013; 11:1650-8. [DOI: 10.1039/c3ob27261c] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Zou Y, Wan L, Blacklock J, Oupicky D, Mao G. In situ AFM analysis investigating disassembly of DNA nanoparticles and nano-films. Methods Mol Biol 2013; 948:183-193. [PMID: 23070771 DOI: 10.1007/978-1-62703-140-0_13] [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: 06/01/2023]
Abstract
Synthetic vector-based gene delivery systems continue to gain strength as viable alternatives to viral vectors due to safety and other concerns. DNA release dynamics is key to the understanding and control of gene delivery from nano-systems. Here we describe atomic force microscope application to the understanding of DNA release dynamics from bioreducible polycation-based nano-systems. The two nano-systems are polyplex nanoparticles and layer-by-layer films.
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Affiliation(s)
- Yi Zou
- Department of Chemical Engineering and Material Sciences, Wayne State University, Detroit, MI, USA
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The yin of exofacial protein sulfhydryls and the yang of intracellular glutathione in in vitro transfection with SS14 bioreducible lipoplexes. J Control Release 2013; 165:44-53. [DOI: 10.1016/j.jconrel.2012.10.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Revised: 10/18/2012] [Accepted: 10/23/2012] [Indexed: 02/03/2023]
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Zhu L, Movassaghian S, Torchilin* VP. Overcoming Biological Barriers with Parenteral Nanomedicines: Physiological and Mechanistic Issues. NANOSTRUCTURED BIOMATERIALS FOR OVERCOMING BIOLOGICAL BARRIERS 2012. [DOI: 10.1039/9781849735292-00435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Markov OO, Mironova NL, Maslov MA, Petukhov IA, Morozova NG, Vlassov VV, Zenkova MA. Novel cationic liposomes provide highly efficient delivery of DNA and RNA into dendritic cell progenitors and their immature offsets. J Control Release 2012; 160:200-10. [DOI: 10.1016/j.jconrel.2011.11.034] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 11/25/2011] [Accepted: 11/27/2011] [Indexed: 12/11/2022]
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Berchel M, Le Gall T, Couthon-Gourvès H, Haelters JP, Montier T, Midoux P, Lehn P, Jaffrès PA. Lipophosphonate/lipophosphoramidates: A family of synthetic vectors efficient for gene delivery. Biochimie 2012; 94:33-41. [DOI: 10.1016/j.biochi.2011.07.026] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Accepted: 07/20/2011] [Indexed: 01/27/2023]
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Muller JPE, Aytar BS, Kondo Y, Lynn DM, Abbott NL. Incorporation of DOPE into Lipoplexes formed from a Ferrocenyl Lipid leads to Inverse Hexagonal Nanostructures that allow Redox-Based Control of Transfection in High Serum. SOFT MATTER 2012; 8:2608-2619. [PMID: 22707977 PMCID: PMC3374640 DOI: 10.1039/c2sm00047d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report small angle X-ray and neutron scattering measurements that reveal that mixtures of the redox-active lipid bis(11-ferrocenylundecyl)dimethylammonium bromide (BFDMA) and dioleoylphosphatidylethanolamine (DOPE) spontaneously form lipoplexes with DNA that exhibit inverse hexagonal nanostructure (H(II) (c)). In contrast to lipoplexes of DNA and BFDMA only, which exhibit a multilamellar nanostructure (L(α) (c)) and limited ability to transfect cells in the presence of serum proteins, we measured lipoplexes of BFDMA and DOPE with the H(II) (c) nanostructure to survive incubation in serum and to expand significantly the range of media compositions (e.g., up to 80% serum) over which BFDMA can be used to transfect cells with high efficiency. Importantly, we also measured the oxidation state of the ferrocene within the BFDMA/DNA lipoplexes to have a substantial influence on the transfection efficiency of the lipoplexes in media containing serum. Specifically, whereas lipoplexes of reduced BFDMA and DOPE transfect cells with high efficiency, lipoplexes of oxidized BFDMA and DNA lead to low levels of transfection. Complementary measurements using SAXS reveal that the low transfection efficiency of the lipoplexes of oxidized BFDMA and DOPE correlates with the presence of weak Bragg peaks and thus low levels of H(II) (c) nanostructure in solution. Overall, these results provide support for our hypothesis that DOPE-induced formation of the H(II) (c) nanostructure of the BFDMA-containing lipoplexes underlies the high cell transfection efficiency measured in the presence of serum, and that the oxidation state of BFDMA within lipoplexes with DOPE substantially regulates the formation of the H(II) (c) nanostructure and thus the ability of the lipoplexes to transfect cells with DNA. More generally, the results presented in this paper suggest that lipoplexes formed from BFDMA and DOPE may offer the basis of approaches that permit active and external control of transfection of cells in the presence of high (physiologically relevant) levels of serum.
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Affiliation(s)
- John P. E. Muller
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
| | - Burcu S. Aytar
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
| | - Yukishige Kondo
- Department of Industrial Chemistry, Tokyo University of Science, Tokyo, Japan
| | - David M. Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
| | - Nicholas L. Abbott
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
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Aytar BS, Muller JPE, Golan S, Hata S, Takahashi H, Kondo Y, Talmon Y, Abbott NL, Lynn DM. Addition of ascorbic acid to the extracellular environment activates lipoplexes of a ferrocenyl lipid and promotes cell transfection. J Control Release 2011; 157:249-59. [PMID: 21963768 DOI: 10.1016/j.jconrel.2011.09.074] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 09/11/2011] [Accepted: 09/15/2011] [Indexed: 12/12/2022]
Abstract
The level of cell transfection mediated by lipoplexes formed using the ferrocenyl lipid bis(11-ferrocenylundecyl)dimethylammonium bromide (BFDMA) depends strongly on the oxidation state of the two ferrocenyl groups of the lipid (reduced BFDMA generally mediates high levels of transfection, but oxidized BFDMA mediates very low levels of transfection). Here, we report that it is possible to chemically transform inactive lipoplexes (formed using oxidized BFMDA) to "active" lipoplexes that mediate high levels of transfection by treatment with the small-molecule reducing agent ascorbic acid (vitamin C). Our results demonstrate that this transformation can be conducted in cell culture media and in the presence of cells by addition of ascorbic acid to lipoplex-containing media in which cells are growing. Treatment of lipoplexes of oxidized BFDMA with ascorbic acid resulted in lipoplexes composed of reduced BFDMA, as characterized by UV/vis spectrophotometry, and lead to activated lipoplexes that mediated high levels of transgene expression in the COS-7, HEK 293T/17, HeLa, and NIH 3T3 cell lines. Characterization of internalization of DNA by confocal microscopy and measurements of the zeta potentials of lipoplexes suggested that these large differences in cell transfection result from (i) differences in the extents to which these lipoplexes are internalized by cells and (ii) changes in the oxidation state of BFDMA that occur in the extracellular environment (i.e., prior to internalization of lipoplexes by cells). Characterization of lipoplexes by small-angle neutron scattering (SANS) and by cryogenic transmission electron microscopy (cryo-TEM) revealed changes in the nanostructures of lipoplexes upon the addition of ascorbic acid, from aggregates that were generally amorphous, to aggregates with a more extensive multilamellar nanostructure. The results of this study provide guidance for the design of redox-active lipids that could lead to methods that enable spatial and/or temporal control of cell transfection.
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Affiliation(s)
- Burcu S Aytar
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
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Shirazi RS, Ewert KK, Leal C, Majzoub RN, Bouxsein NF, Safinya CR. Synthesis and characterization of degradable multivalent cationic lipids with disulfide-bond spacers for gene delivery. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:2156-66. [PMID: 21640069 DOI: 10.1016/j.bbamem.2011.04.020] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 04/04/2011] [Accepted: 04/12/2011] [Indexed: 11/25/2022]
Abstract
Gene therapy provides powerful new approaches to curing a large variety of diseases, which are being explored in ongoing worldwide clinical trials. To overcome the limitations of viral gene delivery systems, synthetic nonviral vectors such as cationic liposomes (CLs) are desirable. However, improvements of their efficiency at reduced toxicity and a better understanding of their mechanism of action are required. We present the efficient synthesis of a series of degradable multivalent cationic lipids (CMVLn, n=2 to 5) containing a disulfide bond spacer between headgroup and lipophilic tails. This spacer is designed to be cleaved in the reducing milieu of the cytoplasm and thus decrease lipid toxicity. Small angle X-ray scattering demonstrates that the initially formed lamellar phase of CMVLn-DNA complexes completely disappears when reducing agents such as DTT or the biologically relevant reducing peptide glutathione are added to mimic the intracellular milieu. The CMVLs (n=3 to 5) exhibit reduced cytotoxicity and transfect mammalian cells with efficiencies comparable to those of highly efficient non-degradable analogs and benchmark commercial reagents such as Lipofectamine 2000. Thus, our results demonstrate that degradable disulfide spacers may be used to reduce the cytotoxicity of synthetic nonviral gene delivery carriers without compromising their transfection efficiency.
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Affiliation(s)
- Rahau S Shirazi
- Chemistry and Biochemistry Department, University of California, Santa Barbara, CA 93106, USA
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Zhang XX, McIntosh TJ, Grinstaff MW. Functional lipids and lipoplexes for improved gene delivery. Biochimie 2011; 94:42-58. [PMID: 21621581 DOI: 10.1016/j.biochi.2011.05.005] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Accepted: 05/06/2011] [Indexed: 12/17/2022]
Abstract
Cationic lipids are the most common non-viral vectors used in gene delivery with a few currently being investigated in clinical trials. However, like most other synthetic vectors, these vectors suffer from low transfection efficiencies. Among the various approaches to address this challenge, functional lipids (i.e., lipids responding to a stimuli) offer a myriad of opportunities for basic studies of nucleic acid-lipid interactions and for in vitro and in vivo delivery of nucleic acid for a specific biological/medical application. This manuscript reviews recent advances in pH, redox, and charge-reversal sensitive lipids.
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Affiliation(s)
- Xiao-Xiang Zhang
- Department of Chemistry, Boston University, Boston, MA 02215, USA
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Candiani G, Pezzoli D, Ciani L, Chiesa R, Ristori S. Bioreducible liposomes for gene delivery: from the formulation to the mechanism of action. PLoS One 2010; 5:e13430. [PMID: 20976172 PMCID: PMC2955545 DOI: 10.1371/journal.pone.0013430] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Accepted: 09/22/2010] [Indexed: 01/22/2023] Open
Abstract
Background A promising strategy to create stimuli-responsive gene delivery systems is to exploit the redox gradient between the oxidizing extracellular milieu and the reducing cytoplasm in order to disassemble DNA/cationic lipid complexes (lipoplexes). On these premises, we previously described the synthesis of SS14 redox-sensitive gemini surfactant for gene delivery. Although others have attributed the beneficial effects of intracellular reducing environment to reduced glutathione (GSH), these observations cannot rule out the possible implication of the redox milieu in its whole on transfection efficiency of bioreducible transfectants leaving the determinants of DNA release largely undefined. Methodology/Principal Findings With the aim of addressing this issue, SS14 was here formulated into binary and ternary 100 nm-extruded liposomes and the effects of the helper lipid composition and of the SS14/helper lipids molar ratio on chemical-physical and structural parameters defining transfection effectiveness were investigated. Among all formulations tested, DOPC/DOPE/SS14 at 25∶50∶25 molar ratio was the most effective in transfection studies owing to the presence of dioleoyl chains and phosphatidylethanolamine head groups in co-lipids. The increase in SS14 content up to 50% along DOPC/DOPE/SS14 liposome series yielded enhanced transfection, up to 2.7-fold higher than that of the benchmark Lipofectamine 2000, without altering cytotoxicity of the corresponding lipoplexes at charge ratio 5. Secondly, we specifically investigated the redox-dependent mechanisms of gene delivery into cells through tailored protocols of transfection in GSH-depleted and repleted vs. increased oxidative stress conditions. Importantly, GSH specifically induced DNA release in batch and in vitro. Conclusions/Significance The presence of helper lipids carrying unsaturated dioleoyl chains and phosphatidylethanolamine head groups significantly improved transfection efficiencies of DOPC/DOPE/SS14 lipoplexes. Most importantly, this study shows that intracellular GSH levels linearly correlated with transfection efficiency while oxidative stress levels did not, highlighting for the first time the pivotal role of GSH rather than oxidative stress in its whole in transfection of bioreducible vectors.
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Affiliation(s)
- Gabriele Candiani
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, Milan, Italy.
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Tros de Ilarduya C, Sun Y, Düzgüneş N. Gene delivery by lipoplexes and polyplexes. Eur J Pharm Sci 2010; 40:159-70. [DOI: 10.1016/j.ejps.2010.03.019] [Citation(s) in RCA: 468] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 03/17/2010] [Accepted: 03/23/2010] [Indexed: 11/28/2022]
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Ciani L, Candiani G, Frati A, Ristori S. DNA induced dimerization of a sulfhydryl surfactant in transfection agents studied by ESR spectroscopy. Biophys Chem 2010; 151:81-5. [PMID: 20554371 DOI: 10.1016/j.bpc.2010.05.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Revised: 05/04/2010] [Accepted: 05/19/2010] [Indexed: 10/19/2022]
Abstract
Synthetic vectors for gene delivery offer a wide variety of functional derivatization, which can be exploited to increase targeting and transfection efficacy. In this field, redox-sensitive agents based on the thiol/disulfide (-SH/-SS-) equilibrium are a class of promising transfectants. Here the thiol group content in lipoplexes formed by a triazine-based sulfhydryl surfactant (SH14) and a plasmid (pGEFP-N1) was probed by Electron Spin Resonance (ESR) of appropriately tailored nitroxides. By modelling the time decay of ESR intensity, details on the process of lipoplex formation were obtained. It was found that the concentration of available -SH groups depended on the contact time between SH14 and DNA, suggesting that lipoplex formation entailed disulfide bridge formation among SH14 molecules. This finding represents the first experimental evidence that the -SH/-SS- equilibrium plays a role in lipoplex formation when DNA is complexed by sulfhydryl-based transfecting agents, which may have profound influence on their mechanism of action.
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Affiliation(s)
- Laura Ciani
- Department of Chemistry and CSGI, University of Florence, Sesto F.no, Italy
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32
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Rao NM. Cationic lipid-mediated nucleic acid delivery: beyond being cationic. Chem Phys Lipids 2010; 163:245-52. [DOI: 10.1016/j.chemphyslip.2010.01.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Revised: 11/25/2009] [Accepted: 01/03/2010] [Indexed: 10/20/2022]
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Wan L, You Y, Zou Y, Oupický D, Mao G. DNA release dynamics from bioreducible poly(amido amine) polyplexes. J Phys Chem B 2010; 113:13735-41. [PMID: 19522487 DOI: 10.1021/jp901835u] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The DNA release dynamics of bioreducible poly(amido amine) polyplexes were studied in real time by atomic force microscopy (AFM). DNA release is triggered by a depolymerization of high-molecular-weight polycations into low-molecular-weight oligocations that occurs by means of the thiol and disulfide exchange reaction mechanism. AFM images were captured in a simulated physiological reducing environment that used dithiothreitol. Distinctive stages of disassembly are common among various polyplexes that have different disulfide content, molecular weight, and polymer architecture, while the DNA release rate depends upon the disulfide content. In the first stage, polyplexes evolve from metastable structures into the more stable toroid structure upon the depolymerization. In the second stage, toroids either aggregate or fuse into larger toroids. In the last stage, DNA wormlike chains and loops are held by a central compact core. The results confirm the prospect of bioreducible poly(amido amine)s as controlled DNA delivery vectors. The study offers new physical insights into the DNA release pathway including intermediate structures that have a high degree of structural heterogeneity and disassembly induced particle growth. The study identifies disassembly induced colloidal and morphological instability as an important issue to be addressed.
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Affiliation(s)
- Lei Wan
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, USA
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Unciti-Broceta A, Bacon MN, Bradley M. Strategies for the preparation of synthetic transfection vectors. Top Curr Chem (Cham) 2010; 296:15-49. [PMID: 21504099 DOI: 10.1007/128_2010_65] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In the late 1980s independent work by Felgner and Behr pioneered the use of cationic materials to complex and deliver nucleic acids into eukaryotic cells. Since this time, a vast number of synthetic transfection vectors, which are typically divided into two main "transfectors", have been developed namely: (1) cationic lipids and (2) polycationic polymers. In this chapter the main synthetic approaches used for the synthesis of these compounds will be reviewed with particular attention paid to: cationic lipids and dendrimers. This review is aimed primarily at the younger audience of doctoral students and non-specialist readers.
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Affiliation(s)
- Asier Unciti-Broceta
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, UK.
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Labas R, Beilvert F, Barteau B, David S, Chèvre R, Pitard B. Nature as a source of inspiration for cationic lipid synthesis. Genetica 2009; 138:153-68. [DOI: 10.1007/s10709-009-9405-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2009] [Accepted: 08/25/2009] [Indexed: 11/28/2022]
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Bauhuber S, Hozsa C, Breunig M, Göpferich A. Delivery of nucleic acids via disulfide-based carrier systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2009; 21:3286-3306. [PMID: 20882498 DOI: 10.1002/adma.200802453] [Citation(s) in RCA: 220] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Nucleic acids are not only expected to assume a pivotal position as "drugs" in the treatment of genetic and acquired diseases, but could also act as molecular cues to control the microenvironment during tissue regeneration. Despite this promise, the efficient delivery of nucleic acids to their side of action is still the major hurdle. One among many prerequisites for a successful carrier system for nucleic acids is high stability in the extracellular environment, accompanied by an efficient release of the cargo in the intracellular compartment. A promising strategy to create such an interactive delivery system is to exploit the redox gradient between the extra- and intracellular compartments. In this review, emphasis is placed on the biological rationale for the synthesis of redox sensitive, disulfide-based carrier systems, as well as the extra- and intracellular processing of macromolecules containing disulfide bonds. Moreover, the basic synthetic approaches for introducing disulfide bonds into carrier molecules, together with examples that demonstrate the benefit of disulfides at the individual stages of nucleic acid delivery, will be presented.
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Byrne C, Sallas F, Rai DK, Ogier J, Darcy R. Poly-6-cationic amphiphilic cyclodextrins designed for gene delivery. Org Biomol Chem 2009; 7:3763-71. [PMID: 19707681 DOI: 10.1039/b907232b] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of amphiphilic cyclodextrins containing cationic groups at the 6-positions and alkyl or biolabile ester groups at the 2-positions has been synthesised. Selective 2-O-allylation followed by photochemical addition of lipophilic thiols made it possible to control lipophilicity in these mesomolecules and allow solubility and self-assembly in water. The cationic groups are cysteamine-derived, while the alkyl and ester groups are C(1)-C(16) and benzyl ester groups. This is a new general synthetic route to a potentially wide range of polycationic cyclodextrins capable of acting as gene delivery vectors by condensing DNA and forming liquid crystalline complexes with oligonucleotides.
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Affiliation(s)
- Colin Byrne
- Centre for Synthesis and Chemical Biology, School of Chemistry and Chemical Biology, Ollscoil na hEireann, University College Dublin, Belfield, Dublin 4, Ireland
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Manosroi A, Thathang K, Manosroi J, Werner RG, Schubert R, Peschka-Süss R. Expression of luciferase plasmid (pCMVLuc) entrapped in DPPC/Cholesterol/DDAB liposomes in HeLa cell lines. J Liposome Res 2009; 19:131-40. [DOI: 10.1080/08982100802642457] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jewell CM, Hays ME, Kondo Y, Abbott NL, Lynn DM. Chemical activation of lipoplexes formed from DNA and a redox-active, ferrocene-containing cationic lipid. Bioconjug Chem 2009; 19:2120-8. [PMID: 18831573 DOI: 10.1021/bc8002138] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We recently reported that the ferrocene-containing cationic lipid BFDMA [bis(11-ferrocenylundecyl)dimethylammonium bromide] can be used to mediate cell transfection, and that levels of transfection depend critically upon the oxidation state of the ferrocenyl groups of the lipid. Here, we report that the redox activity of BFDMA can be exploited to transform lipoplexes formed from oxidized BFDMA (which do not transfect cells) to lipoplexes that are "active" (and thus mediate high levels of transgene expression) by treatment with the chemical reducing agent glutathione (GSH). We demonstrate that GSH can be used to reduce the ferrocenium groups of oxidized BFDMA rapidly both (i) in solution and (ii) in lipoplexes formed by mixing oxidized BFDMA and DNA. Lipoplexes transformed in this manner mediate levels of cell transfection in vitro that are comparable to levels of transfection mediated by lipoplexes prepared by mixing DNA and reduced BFDMA. We demonstrate further that the chemical reduction of oxidized BFDMA leads to changes in the zeta potentials of these lipoplexes (e.g., from negative to positive). Characterization of lipoplex internalization using confocal microscopy demonstrated that these changes in zeta potential correlate to differences in the extents to which these lipoplexes are internalized by cells. These results provide a framework from which to interpret differences in cell transfection mediated by reduced and oxidized BFDMA. When combined, the results of this study suggest the basis of an approach that could be used to transform lipoplexes actively or "on-demand" and provide spatial and/or temporal control over the transfection of cells in a range of different fundamental and applied contexts.
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Affiliation(s)
- Christopher M Jewell
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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Bhattacharya S, Bajaj A. Advances in gene delivery through molecular design of cationic lipids. Chem Commun (Camb) 2009:4632-56. [DOI: 10.1039/b900666b] [Citation(s) in RCA: 232] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Affiliation(s)
| | - Eric E. Simanek
- Department of Chemistry, Texas A&M University, College Station, Texas 77843
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Wan L, Manickam DS, Oupický D, Mao G. DNA release dynamics from reducible polyplexes by atomic force microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:12474-82. [PMID: 18839970 PMCID: PMC2825055 DOI: 10.1021/la802088y] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Controlled intracellular disassembly of polyelectrolyte complexes of polycations and DNA (polyplexes) is a crucial step for the success of nonviral gene delivery. Motivated by our previous observation of different gene delivery performances among multiblock reducible copolypeptide vectors ( Manickam, D. S. ; Oupicky, D. Bioconjugate Chem. 2006, 17, 1395- 1403 ), atomic force microscopy is used to visualize plasmid DNA in various decondensed states from reducible polypeptide polyplexes under simulated physiological reducing conditions. DNA decondensation is triggered by reductive degradation of disulfide-containing cationic polypeptides. Striking differences in DNA release dynamics between polyplexes based on polypeptides of histidine-rich peptide (HRP, CKHHHKHHHKC) and nuclear localization signal (NLS, CGAGPKKKRKVC) peptide are presented. The HRP and NLS polyplexes are similar to each other in their initial morphology with a majority of them containing only one DNA plasmid. Upon reductive degradation by dithiothreitol, DNA is released from NLS abruptly regardless of the initial polyplex morphology, while DNA release from HRP polyplexes displays a gradual decondensation that is dependent on the size of polyplexes. The release rate is higher for larger HRP polyplexes. The smaller HRP polyplexes become unstable when they are in contact with expanding chains nearby. The results reveal potentially rich DNA release dynamics that can be controlled by subtle variation in multivalent counterion binding to DNA as well as the cellular matrix.
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Affiliation(s)
- Lei Wan
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202
| | - Devika S. Manickam
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI 48202
| | - David Oupický
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI 48202
| | - Guangzhao Mao
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202
- Corresponding author:
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Torchilin V. Multifunctional and stimuli-sensitive pharmaceutical nanocarriers. Eur J Pharm Biopharm 2008; 71:431-44. [PMID: 18977297 DOI: 10.1016/j.ejpb.2008.09.026] [Citation(s) in RCA: 441] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2007] [Revised: 08/29/2008] [Accepted: 09/02/2008] [Indexed: 11/26/2022]
Abstract
Currently used pharmaceutical nanocarriers, such as liposomes, micelles, and polymeric nanoparticles, demonstrate a broad variety of useful properties, such as longevity in the body; specific targeting to certain disease sites; enhanced intracellular penetration; contrast properties allowing for direct carrier visualization in vivo; stimuli-sensitivity, and others. Some of those pharmaceutical carriers have already made their way into clinic, while others are still under preclinical development. In certain cases, the pharmaceutical nanocarriers combine several of the listed properties. Long-circulating immunoliposomes capable of prolonged residence in the blood and specific target recognition represent one of the examples of this kind. The engineering of multifunctional pharmaceutical nanocarriers combining several useful properties in one particle can significantly enhance the efficacy of many therapeutic and diagnostic protocols. This paper considers the current status and possible future directions in the emerging area of multifunctional nanocarriers with primary attention on the combination of such properties as longevity, targetability, intracellular penetration, contrast loading, and stimuli-sensitivity.
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Affiliation(s)
- Vladimir Torchilin
- Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, MA 02115, USA
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Abstract
Polyplexes sensitive to redox potential gradients represent a promising class of vectors for delivery of nucleic acids. This review focuses on the recent advances in the development of these vectors. The biological rationale for the design of redox-sensitive polyplexes is discussed together with the basic synthetic approaches for introducing reducible disulfide bonds into the structure of the polyplexes. The biological properties of the redox-sensitive polyplexes of plasmid DNA, mRNA, antisense oligonucleotides and siRNA are reviewed with emphasis on in vitro cellular delivery, cytotoxicity and in vivo activity. Overall, redox-sensitive polyplexes represent a promising platform for further development as vectors for delivery of a wide variety of therapeutic nucleic acids.
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Thompson DH. Adenovirus in a synthetic membrane wrapper: an example of hybrid vigor? ACS NANO 2008; 2:821-6. [PMID: 19206477 PMCID: PMC6885378 DOI: 10.1021/nn800279s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Nucleic acid delivery applications require the development of carrier systems that are effective, selective, and non-toxic. Many different viral and non-viral approaches, including the use of retroviruses, adenoviruses, liposomes, and dendrimers, have been investigated. Unfortunately, issues still remain with regard to the safety and efficiency of these delivery vehicles. In this Perspective, the challenges of designing a stable vector that is capable of effective gene therapy are highlighted. Progress in the area is also presented, including the work of Kostarelos and co-workers appearing in this issue of ACS Nano, in which they describe a novel delivery vehicle that consists of lipid envelopes encasing viral nanoparticles.
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Affiliation(s)
- David H Thompson
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, USA.
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Bajaj A, Kondaiah P, Bhattacharya S. Effect of the Nature of the Spacer on Gene Transfer Efficacies of Novel Thiocholesterol Derived Gemini Lipids in Different Cell Lines: A Structure–Activity Investigation. J Med Chem 2008; 51:2533-40. [DOI: 10.1021/jm7010436] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Avinash Bajaj
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Paturu Kondaiah
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
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Torchilin VP. Tat peptide-mediated intracellular delivery of pharmaceutical nanocarriers. Adv Drug Deliv Rev 2008; 60:548-58. [PMID: 18053612 DOI: 10.1016/j.addr.2007.10.008] [Citation(s) in RCA: 327] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2007] [Accepted: 10/01/2007] [Indexed: 12/16/2022]
Abstract
Cell-penetrating peptides (CPPs) including TAT peptide (TATp) have been successfully used for intracellular delivery of a broad variety of cargoes including various nanoparticulate pharmaceutical carriers (liposomes, micelles, nanoparticles). Here, we will consider the main results in this area, with a special emphasis on TATp-mediated delivery of liposomes and DNA. We will also address the development of "smart" stimuli-sensitive nanocarriers, where cell-penetrating function can be activated by the decreased pH only inside the biological target minimizing thus the interaction of drug-loaded nanocarriers with non-target cells.
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Karmali PP, Chaudhuri A. Cationic liposomes as non-viral carriers of gene medicines: resolved issues, open questions, and future promises. Med Res Rev 2007; 27:696-722. [PMID: 17022036 DOI: 10.1002/med.20090] [Citation(s) in RCA: 228] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The clinical success of gene therapy is critically dependent on the development of efficient and safe gene delivery reagents, popularly known as "transfection vectors." The transfection vectors commonly used in gene therapy are mainly of two types: viral and non-viral. The efficiencies of viral transfection vectors are, in general, superior to their non-viral counterparts. However, the myriads of potentially adverse immunogenic aftermaths associated with the use of viral vectors are increasingly making the non-viral gene delivery reagents as the vectors of choice. Among the existing arsenal of non-viral gene delivery reagents, the distinct advantages associated with the use of cationic transfection lipids include their: (a) robust manufacture; (b) ease in handling and preparation techniques; (c) ability to inject large lipid:DNA complexes; and (d) low immunogenic response. The present review highlights the major achievements in the area of designing efficacious cationic transfection lipids, some of the more recent advances in the field of cationic liposomes-mediated gene transfer and targeted gene delivery, some unresolved issues and challenges in liposomal gene delivery, and future promises of cationic liposomes as gene-carriers in non-viral gene therapy.
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Affiliation(s)
- Priya Prakash Karmali
- Division of Lipid Science and Technology, Indian Institute of Chemical Technology, Hyderabad-500 007, India
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Abstract
Gene delivery using nonviral approaches has been extensively studied as a basic tool for intracellular gene transfer and gene therapy. In the past, the primary focus has been on application of physical, chemical, and biological principles to development of a safe and efficient method that delivers a transgene into target cells for appropriate expression. This review summarizes the current status of the most commonly used nonviral methods, with an emphasis on their mechanism of action for gene delivery, and their advantages and limitations for gene therapy applications. The technical aspects of each delivery system are also reviewed, with a focus on how to achieve optimal delivery efficiency. A brief discussion of future development and further improvement of the current systems is intended to stimulate new ideas and encourage rapid advancement in this new and promising field.
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Affiliation(s)
- Xiang Gao
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, 15261 Pittsburgh, PA
| | - Keun-Sik Kim
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, 15261 Pittsburgh, PA
| | - Dexi Liu
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, 15261 Pittsburgh, PA
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Dalkara D, Chandrashekhar C, Zuber G. Intracellular protein delivery with a dimerizable amphiphile for improved complex stability and prolonged protein release in the cytoplasm of adherent cell lines. J Control Release 2006; 116:353-9. [PMID: 17097756 DOI: 10.1016/j.jconrel.2006.10.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2006] [Revised: 09/28/2006] [Accepted: 10/02/2006] [Indexed: 11/17/2022]
Abstract
Direct delivery of functionally active proteins into cells represents an emerging strategy for laboratory investigation and therapeutic applications. For this purpose, we developed a novel amphiphile (CholCSper) consisting of cholesterol linked to carboxy-spermine by a cysteine. This amphiphile is dimerizable upon mild oxidation of the thiol to disulfide and it was used in formulation with DOPE to prepare an intracellular protein delivery system. The stabilization of the CholCSper assemblies by chemical conversion of CholCSper into its gemini amphiphile afforded the production of homogeneous assemblies with proteins whose sizes are easier to control. Furthermore, the cholesterol moiety has an effect on the density of the complexes formed with proteins and leads to a prolonged protein release in the cytoplasm of cells exposed to the protein carrier assemblies.
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Affiliation(s)
- Deniz Dalkara
- Faculté de Pharmacie, Université Louis Pasteur de Strasbourg et CNRS, 74, route du rhin, 67400 Illkirch, France
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