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Mach M, Płachta Ł, Wydro P. Study of the correlation between the structure of selected triester of phosphatidylcholine and their impact on physicochemical properties of model mammalian membranes. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2024; 1866:184254. [PMID: 37989397 DOI: 10.1016/j.bbamem.2023.184254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/14/2023] [Accepted: 11/14/2023] [Indexed: 11/23/2023]
Abstract
Cationic lipids are synthetic compounds of amphiphilic character used in Drug Delivery Systems (DDS), especially in gene therapy, as the carriers of genetic material. As it is known, the main limitation of the application of cationic lipids in DDS is their high cytotoxicity after in vivo administration and low bioactivity. This is probably related to not fully known the relationship between the lipid structure and its activity as well as the mechanism of lipofection or drug delivery. Therefore, in this work we determined the impact of a selected group of cationic lipids - triesters of phosphatidylcholine (Et-PCs) - differing in their hydrophobic structure on model mammalian membranes. In the research, as model systems, Langmuir monolayers and liposomes were applied. It was shown that the incorporation of Et-PCs into model mammalian membranes weakens interactions between lipids, causing the increase of fluidity, disordering degree and permeability of membrane. The destabilization of the membrane in this way can facilitate the entry of drugs, carried inside cationic liposomes, into the pathological cell. Moreover, the studies prove that the structure of the hydrophobic part of cationic lipids also affects the properties of lipid membranes.
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Affiliation(s)
- Marzena Mach
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
| | - Łukasz Płachta
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; Jagiellonian University, Doctoral School of Exact and Natural Sciences, Prof. Łojasiewicza 11, 30-348 Kraków, Poland
| | - Paweł Wydro
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
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β-cyclodextrin based nano gene delivery using pharmaceutical applications to treat Wolfram syndrome. Ther Deliv 2022; 13:449-462. [PMID: 36748654 DOI: 10.4155/tde-2022-0036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Wolfram syndrome is a rare multisystem autosomal recessive neurodegenerative disorder that affects the brain and central nervous system. Currently, there is no cure or treatment for Wolfram syndrome. Therefore, new techniques are needed to target the loss of the WFS1 gene. Gene therapy approach to introduce a functional gene using a viral or a non-viral vector could be a treatment strategy for Wolfram syndrome 1 (WS1). Viral vectors have therapeutic benefits and greater efficiency; however, they pose a high health risk. Recently pharmaceutical therapeutic research has developed cell-penetrating non-viral nano molecules that could be used as vectors for gene delivery. Among nonviral vectors, the unique properties of β-cyclodextrin suggest that it can be a promising safe vector for gene delivery.
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3
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Sriamornsak P, Dass CR. Chitosan Nanoparticles in Atherosclerosis—Development to Preclinical Testing. Pharmaceutics 2022; 14:pharmaceutics14050935. [PMID: 35631521 PMCID: PMC9145436 DOI: 10.3390/pharmaceutics14050935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/04/2022] [Accepted: 04/22/2022] [Indexed: 02/01/2023] Open
Abstract
Chitosan is a natural biopolymer that is present in an abundant supply in sources such as crustacean shells, mushrooms, and insect exoskeletons. It can be used to make a variety of types of drug formulations and is generally safe to use in vivo; plus, it has inherent cholesterol-reducing properties. While an abundance of papers has tested this biopolymer in nanoparticles in cancer and diabetes research, there is a lag of usage, and hence the paucity of information, in the area of cardiovascular research, specifically in atherosclerosis, the topic of this review. This review highlights some of the deficiencies in this niche area of research, examines the range of chitosan nanoparticles that have been researched to date, and proposes several ways forward to advance this field. Nanoparticles used for both diagnostic and therapeutic purposes are reviewed, with a discussion on how these nanoparticles could be better researched in future and what lays ahead as the field potentially moves towards clinical trials in future.
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Affiliation(s)
- Pornsak Sriamornsak
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand;
- Pharmaceutical Biopolymer Group (PBiG), Silpakorn University, Nakhon Pathom 73000, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand
| | - Crispin R. Dass
- Curtin Medical School, Curtin University, Bentley 6102, Australia
- Curtin Health Innovation Research Institute, Bentley 6102, Australia
- Correspondence:
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Ojha AK, Rajasekaran R, Pandey AK, Dutta A, Seesala VS, Das SK, Chaudhury K, Dhara S. Nanotheranostics: Nanoparticles Applications, Perspectives, and Challenges. BIOSENSING, THERANOSTICS, AND MEDICAL DEVICES 2022:345-376. [DOI: 10.1007/978-981-16-2782-8_14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
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Park SJ, Shin H, Won C, Min DH. Non-viral, direct neuronal reprogramming from human fibroblast using a polymer-functionalized nanodot. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2020; 32:102316. [PMID: 33068744 DOI: 10.1016/j.nano.2020.102316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 09/23/2020] [Accepted: 10/06/2020] [Indexed: 01/01/2023]
Abstract
Among various strategies to treat neurodegenerative disorders, cell replacement therapies have drawn much attention recently. Such a trend led to the increase in demand for the rare and specialized cells, followed by the outburst development of various cell reprogramming strategies. However, several limitations on these conventional methods remain to be solved, including the genetic instability of the viral vectors and the high cytotoxicity or poor performance of the non-viral carriers. Therefore, non-viral methods need to be developed to ensure safe and efficient cell reprogramming. Here, we introduce a polymer-modified nano-reagent (Polymer-functionalized Nanodot, PolyN) for the safe and efficient, non-viral direct cell reprogramming. PolyN facilitated the highly efficient contemporary overexpression of the transgene compared to the conventional reagent. With our nano-reagent, we demonstrated the SOX2-mediated cell reprogramming and successfully generated the neuron-like cell from the human fibroblast.
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Affiliation(s)
- Se-Jin Park
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea
| | - Hojeong Shin
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea
| | - Cheolhee Won
- Institute of Biotherapeutics Convergence Technology, Lemonex Inc., Seoul, Republic of Korea
| | - Dal-Hee Min
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea; Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea; Institute of Biotherapeutics Convergence Technology, Lemonex Inc., Seoul, Republic of Korea.
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6
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Mukalel AJ, Riley RS, Zhang R, Mitchell MJ. Nanoparticles for nucleic acid delivery: Applications in cancer immunotherapy. Cancer Lett 2019; 458:102-112. [PMID: 31100411 DOI: 10.1016/j.canlet.2019.04.040] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 04/17/2019] [Accepted: 04/30/2019] [Indexed: 12/11/2022]
Abstract
Immunotherapy has recently emerged as a powerful tool for cancer treatment. Early clinical successes from cancer immunotherapy have led to a growing list of FDA approvals, and many new therapies are in clinical and preclinical development. Nucleic acid therapeutics, including DNA, mRNA, and genome editing systems, hold significant potential as a form of immunotherapy due to its robust use in cancer vaccination, adoptive T-cell therapy, and gene regulation. However, these therapeutics must overcome numerous delivery obstacles to be successful, including rapid in vivo degradation, poor uptake into target cells, required nuclear entry, and potential in vivo toxicity in healthy cells and tissues. Nanoparticle delivery systems have been engineered to overcome several of these barriers as a means to safely and effectively deliver nucleic acid therapeutics to immune cells. In this Review, we discuss the applications of nucleic acid therapeutics in cancer immunotherapy, and we detail how nanoparticle platforms have been designed to deliver mRNA, DNA, and genome editing systems to enhance the potency and safety of these therapeutics.
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Affiliation(s)
- Alvin J Mukalel
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Rachel S Riley
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Rui Zhang
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Michael J Mitchell
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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7
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Hajdu I, Makhlouf A, Solomon VR, Michel D, Al-Dulaymi M, Wasan KM, Fonge H, Badea I. A 89Zr-labeled lipoplex nanosystem for image-guided gene delivery: design, evaluation of stability and in vivo behavior. Int J Nanomedicine 2018; 13:7801-7818. [PMID: 30538460 PMCID: PMC6257135 DOI: 10.2147/ijn.s179806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background With the advances in radiopharmaceutical research, the development of image-guided therapy has become a major interest. While the development of theranostic nanotherapeutics is frequently associated with cancer chemotherapy, phototherapy and radiotherapy, there is little information available on the in vivo monitoring of gene delivery systems and the application of image-guided approach in gene therapy. The goal of this work was to determine the in vivo behavior of DNA delivery nanosystems - based on cationic gemini surfactants – designed for image-guided gene therapy. We tested the feasibility of monitoring tumor accumulation of gene delivery nanoparticles by positron emission tomography. Methods To be able to conjugate radiotracers to the nanoparticles, a deferoxamine-modified gemini surfactant was synthesized, DNA-containing lipoplex nanoparticles were formulated, and radiolabeled with Zirconium-89 (89Zr). The pharmacokinetics and biodistribution of 89Zr labeled surfactant and 89Zr labeled nanoparticles were monitored in mice by microPET/CT imaging and ex vivo gamma counting. Results Modification of the nanoparticles with deferoxamine did not alter their physicochemical properties. The radiolabeled nanoparticles (labeling efficiency of 95±3%) were stable in PBS and serum. The biological half-life of the 89Zr labeled nanoparticles was significantly higher compared to 89Zr labeled surfactant. As expected, the nanoparticles had significantly higher liver accumulation than the radiolabeled surfactant alone and lower kidney accumulation. Tumor uptake was detected at 2 hours post injection and decreased throughout the 3-day monitoring. Conclusion We propose that radiolabeling DNA delivery lipoplex nanosystems is a promising approach for the design and optimization of image-guided nanomedicines, especially in the context of cancer gene therapy.
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Affiliation(s)
- Istvan Hajdu
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada,
| | - Amal Makhlouf
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada, .,Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, 12411 Cairo, Egypt
| | - Viswas Raja Solomon
- Department of Medical Imaging, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0W8, Canada,
| | - Deborah Michel
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada,
| | - Mays Al-Dulaymi
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada,
| | - Kishor M Wasan
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada,
| | - Humphrey Fonge
- Department of Medical Imaging, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0W8, Canada, .,Department of Medical Imaging, Royal University Hospital Saskatoon, SK S7N 0W8, Canada,
| | - Ildiko Badea
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada,
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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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9
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Englert C, Fevre M, Wojtecki RJ, Cheng W, Xu Q, Yang C, Ke X, Hartlieb M, Kempe K, García JM, Ono RJ, Schubert US, Yang YY, Hedrick JL. Facile carbohydrate-mimetic modifications of poly(ethylene imine) carriers for gene delivery applications. Polym Chem 2016. [DOI: 10.1039/c6py00940a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PEI was chemically-modified with carbohydrates and carbohydrate-mimetics to improve biocompatibility.
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Affiliation(s)
- Christoph Englert
- IBM Almaden Research Center
- San Jose
- USA
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
| | | | | | - Wei Cheng
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
- Singapore
| | - Qingxing Xu
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
- Singapore
| | - Chuan Yang
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
- Singapore
| | - Xiyu Ke
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
- Singapore
| | - Matthias Hartlieb
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Jena Center for Soft Matter (JCSM)
| | - Kristian Kempe
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Jena Center for Soft Matter (JCSM)
| | | | | | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Jena Center for Soft Matter (JCSM)
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
- Singapore
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10
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Lemieszek MK, Ribeiro M, Guichard Alves H, Marques G, Nunes FM, Rzeski W. Boletus edulis ribonucleic acid – a potent apoptosis inducer in human colon adenocarcinoma cells. Food Funct 2016; 7:3163-75. [DOI: 10.1039/c6fo00132g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Despite the large popularity of the Boletus edulis mushroom, little is known about its influence on human health and the possibilities of its therapeutic use.
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Affiliation(s)
| | - Miguel Ribeiro
- CQ-Vila Real
- Chemistry Research Centre
- Chemistry Department
- University of Trás-os-Montes e Alto Douro
- 5001-801 Vila Real
| | - Helena Guichard Alves
- CQ-Vila Real
- Chemistry Research Centre
- Chemistry Department
- University of Trás-os-Montes e Alto Douro
- 5001-801 Vila Real
| | - Guilhermina Marques
- CITAB – Centre for the Research and Technology of Agro-Environment and Biological Sciences
- Department of Agronomy
- University of Trás-os-Montes e Alto Douro
- 5001-801 Vila Real
- Portugal
| | - Fernando Milheiro Nunes
- CQ-Vila Real
- Chemistry Research Centre
- Chemistry Department
- University of Trás-os-Montes e Alto Douro
- 5001-801 Vila Real
| | - Wojciech Rzeski
- Department of Medical Biology
- Institute of Agricultural Medicine
- 20-090 Lublin
- Poland
- Department of Virology and Immunology
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11
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Li C, Yang YW, Liang ZX, Wu GL, Gao H. Post-modification of poly(glycidyl methacrylate)s with alkyl amine and isothiocyanate for effective pDNA delivery. Polym Chem 2013. [DOI: 10.1039/c3py00573a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Comprehensive study of cationic liposomes composed of DC-Chol and cholesterol with different mole ratios for gene transfection. Colloids Surf B Biointerfaces 2013; 101:6-13. [DOI: 10.1016/j.colsurfb.2012.05.032] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Revised: 05/15/2012] [Accepted: 05/21/2012] [Indexed: 11/20/2022]
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13
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Even-Chen S, Cohen R, Barenholz Y. Factors affecting DNA binding and stability of association to cationic liposomes. Chem Phys Lipids 2012; 165:414-23. [PMID: 22715503 DOI: 10.1016/j.chemphyslip.2012.03.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Lipoplexes are complexes formed between cationic liposomes (L(+)) and polyanionic nucleic acids (P(-)). They are commonly used in vitro and in vivo as a nucleic acid delivery system. Our study aims are to investigate how DOTAP-based cationic liposomes, which vary in their helper lipid (cholesterol or DOPE) and in media of different ionic strengths affect the degree, mode of association and degree of condensation of pDNA. This was determined by ultracentrifugation and gel electrophoresis, methods based on different physical principles. In addition, the degree of pDNA condensation was also determined using the ethidium bromide (EtBr) intercalation assay. The results suggest that for cationic lipid compositions (DOTAP/DOPE and DOTAP/cholesterol), 1.5 M NaCl, but not 0.15 M NaCl, both prevent lipoplex formation and/or induce partial dissociation between lipid and DNA of preformed lipoplexes. The higher the salt concentration the greater is the similarity of DNA condensation (monitored by EtBr intercalation) between lipoplex DNA and free DNA. As determined by ultracentrifugation and agarose gel electrophoresis, 30-90% of the DNA is uncondensed. SDS below its critical micellar concentration (CMC) induced "de-condensation" of DNA without its physical release (assessed by ultracentrifugation) for both DOTAP/DOPE and DOTAP/cholesterol lipoplexes. As was assessed by agarose gel electrophoresis SDS induced release of 50-60% of DNA from the DOTAP/cholesterol lipoplex but not from the DOTAP/DOPE lipoplex. This study shows that there are conditions under which DNA is still physically associated with the cationic lipids but undergoes unwinding to become less condensed. We also proved that the helper lipid affects level and strength of the L(+) and DNA(-) electrostatic association; these interactions are weaker for DOTAP/cholesterol than for DOTAP/DOPE, despite the fact that the positive charge and surface pH of DOTAP/cholesterol and DOTAP/DOPE are similar.
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Affiliation(s)
- Simcha Even-Chen
- Laboratory of Membrane and Liposome Research, Department of Biochemistry, IMRIC, The Hebrew University, Hadassah Medical School, P.O. Box 12272, Jerusalem 91120, Israel
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Saha RN, Vasanthakumar S, Bende G, Snehalatha M. Nanoparticulate drug delivery systems for cancer chemotherapy. Mol Membr Biol 2010; 27:215-31. [DOI: 10.3109/09687688.2010.510804] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Froelich S, Tai A, Wang P. Lentiviral vectors for immune cells targeting. Immunopharmacol Immunotoxicol 2010; 32:208-18. [PMID: 20085508 DOI: 10.3109/08923970903420582] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Lentiviral vectors (LVs) are efficient gene delivery vehicles suitable for delivering long-term transgene expression in various cell types. Engineering LVs to have the capacity to transduce specific cell types is of great interest to advance the translation of LVs toward the clinic. Here we provide an overview of innovative approaches to target LVs to cells of the immune system. In this overview we distinguish between two types of LV targeting strategies: (i) targeting of the vectors to specific cells by LV surface modifications, and (ii) targeting at the level of transgene transcription by insertion of tissue-specific promoters to drive transgene expression. It is clear that each strategy is of enormous value but ultimately combining these approaches may help reduce the effects of off-target expression and improve the efficiency and safety of LVs for gene therapy.
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Affiliation(s)
- Steven Froelich
- Mork Family Department of Chemical Engineering and Materials Science, Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA
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16
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Zhi D, Zhang S, Wang B, Zhao Y, Yang B, Yu S. Transfection Efficiency of Cationic Lipids with Different Hydrophobic Domains in Gene Delivery. Bioconjug Chem 2010; 21:563-77. [DOI: 10.1021/bc900393r] [Citation(s) in RCA: 187] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- DeFu Zhi
- Key Laboratory of Biotechnology and Bioresources Utilization, The State Ethnic Affairs Commission-Ministry of Education, College of Life Science, Dalian Nationalities University, Dalian, Liaoning, China 116600, and School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning, China 116029
| | - ShuBiao Zhang
- Key Laboratory of Biotechnology and Bioresources Utilization, The State Ethnic Affairs Commission-Ministry of Education, College of Life Science, Dalian Nationalities University, Dalian, Liaoning, China 116600, and School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning, China 116029
| | - Bing Wang
- Key Laboratory of Biotechnology and Bioresources Utilization, The State Ethnic Affairs Commission-Ministry of Education, College of Life Science, Dalian Nationalities University, Dalian, Liaoning, China 116600, and School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning, China 116029
| | - YiNan Zhao
- Key Laboratory of Biotechnology and Bioresources Utilization, The State Ethnic Affairs Commission-Ministry of Education, College of Life Science, Dalian Nationalities University, Dalian, Liaoning, China 116600, and School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning, China 116029
| | - BaoLing Yang
- Key Laboratory of Biotechnology and Bioresources Utilization, The State Ethnic Affairs Commission-Ministry of Education, College of Life Science, Dalian Nationalities University, Dalian, Liaoning, China 116600, and School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning, China 116029
| | - ShiJun Yu
- Key Laboratory of Biotechnology and Bioresources Utilization, The State Ethnic Affairs Commission-Ministry of Education, College of Life Science, Dalian Nationalities University, Dalian, Liaoning, China 116600, and School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning, China 116029
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17
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Marty R, N’soukpoé-Kossi CN, Charbonneau DM, Kreplak L, Tajmir-Riahi HA. Structural characterization of cationic lipid-tRNA complexes. Nucleic Acids Res 2009; 37:5197-207. [PMID: 19561199 PMCID: PMC2731917 DOI: 10.1093/nar/gkp543] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 06/08/2009] [Accepted: 06/09/2009] [Indexed: 01/22/2023] Open
Abstract
Despite considerable interest and investigations on cationic lipid-DNA complexes, reports on lipid-RNA interaction are very limited. In contrast to lipid-DNA complexes where lipid binding induces partial B to A and B to C conformational changes, lipid-tRNA complexation preserves tRNA folded state. This study is the first attempt to investigate the binding of cationic lipid with transfer RNA and the effect of lipid complexation on tRNA aggregation and condensation. We examine the interaction of tRNA with cholesterol (Chol), 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP), dioctadecyldimethylammoniumbromide (DDAB) and dioleoylphosphatidylethanolamine (DOPE), at physiological condition, using constant tRNA concentration and various lipid contents. FTIR, UV-visible, CD spectroscopic methods and atomic force microscopy (AFM) were used to analyze lipid binding site, the binding constant and the effects of lipid interaction on tRNA stability, conformation and condensation. Structural analysis showed lipid-tRNA interactions with G-C and A-U base pairs as well as the backbone phosphate group with overall binding constants of K(Chol) = 5.94 (+/- 0.8) x 10(4) M(-1), K(DDAB) = 8.33 (+/- 0.90) x 10(5) M(-1), K(DOTAP) = 1.05 (+/- 0.30) x 10(5) M(-1) and K(DOPE) = 2.75 (+/- 0.50) x 10(4) M(-1). The order of stability of lipid-tRNA complexation is DDAB > DOTAP > Chol > DOPE. Hydrophobic interactions between lipid aliphatic tails and tRNA were observed. RNA remains in A-family structure, while biopolymer aggregation and condensation occurred at high lipid concentrations.
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Affiliation(s)
- Regis Marty
- Department of Chemistry-Biology, University of Québec at Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7 and Department of Physics and Atmospheric Science, Sir James Dunn Building, Dalhousie University, Lord Dalhousie Drive, Halifax, NS B3H 3J5, Canada
| | - Christophe N. N’soukpoé-Kossi
- Department of Chemistry-Biology, University of Québec at Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7 and Department of Physics and Atmospheric Science, Sir James Dunn Building, Dalhousie University, Lord Dalhousie Drive, Halifax, NS B3H 3J5, Canada
| | - David M. Charbonneau
- Department of Chemistry-Biology, University of Québec at Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7 and Department of Physics and Atmospheric Science, Sir James Dunn Building, Dalhousie University, Lord Dalhousie Drive, Halifax, NS B3H 3J5, Canada
| | - Laurent Kreplak
- Department of Chemistry-Biology, University of Québec at Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7 and Department of Physics and Atmospheric Science, Sir James Dunn Building, Dalhousie University, Lord Dalhousie Drive, Halifax, NS B3H 3J5, Canada
| | - Heidar-Ali Tajmir-Riahi
- Department of Chemistry-Biology, University of Québec at Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7 and Department of Physics and Atmospheric Science, Sir James Dunn Building, Dalhousie University, Lord Dalhousie Drive, Halifax, NS B3H 3J5, Canada
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Verreault M, Bally MB. siRNA-mediated integrin-linked kinase suppression: nonspecific effects of siRNA/cationic liposome complexes trigger changes in the expression of phosphorylated-AKT and mTOR independently of ILK silencing. Oligonucleotides 2009; 19:129-40. [PMID: 19284309 DOI: 10.1089/oli.2008.0157] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Short interfering RNA targeting ILK (ILK siRNA) could be used to treat patients with cancers where constitutive activation of the AKT/PI3K pathway is prominent (e.g., those cancers lack functional PTEN). It is generally believed that siRNA therapeutics will require the use of delivery systems and lipid-based formulations containing cationic lipids (CLs) are a viable option. However, CLs are known to be toxic and exposure to CLs can influence cell survival pathways. This study characterized how CLs combine with ILK siRNA to influence the AKT/PI3K pathway. Using PTEN-negative cell lines (PC3 castration-insensitive prostate cancer cells and U251 glioma cancer cells), the influence of CLs on the downstream consequences of ILK silencing was determined. When comparing nucleofection (an electroporation method that does not require the use of CLs) and CLs as means to deliver ILK siRNA, a 12- to 30-fold increase in siRNA delivery was achieved when using a CL formulation, yet ILK suppression was less efficient. Importantly, time-dependent signaling consequences associated with ILK silencing, including suppression of phosphorylated (serine 473)-AKT and changes in mTOR expression, were observed independently of ILK suppression when the target cells were exposed to cationic lipids following nucleofection-based delivery of ILK siRNA.
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Affiliation(s)
- Maite Verreault
- Advanced Therapeutics, British Columbia Cancer Research Center, Vancouver, British Columbia, Canada.
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19
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Masotti A, Mossa G, Cametti C, Ortaggi G, Bianco A, Grosso ND, Malizia D, Esposito C. Comparison of different commercially available cationic liposome–DNA lipoplexes: Parameters influencing toxicity and transfection efficiency. Colloids Surf B Biointerfaces 2009; 68:136-44. [DOI: 10.1016/j.colsurfb.2008.09.017] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Accepted: 09/17/2008] [Indexed: 11/26/2022]
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20
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Liang CH, Chou TH. Effect of chain length on physicochemical properties and cytotoxicity of cationic vesicles composed of phosphatidylcholines and dialkyldimethylammonium bromides. Chem Phys Lipids 2009; 158:81-90. [PMID: 19428352 DOI: 10.1016/j.chemphyslip.2009.01.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2008] [Revised: 01/08/2009] [Accepted: 01/09/2009] [Indexed: 12/01/2022]
Abstract
This study investigated the physicochemical characteristics of cationic vesicles that were prepared from two phosphatidylcholines and three dialkyldimethylammonium bromides (DXDAB) with differing in dialkyl chain lengths, ranging from 2-C(14) to 2-C(18), by measuring particle size and zeta potential. The dependence of particle size, zeta potential and short-storage stability of mixed phosphatidylcholine/DXDAB vesicles on the chain length and composition were also elucidated. Transmission electron microscopy analysis verified that vesicles were formed as a phosphatidylcholine film to which DXDAB was added in a phosphate buffer saline (PBS, pH 7.4). Furthermore, the toxicity to the human keratinocytes (HaCaT) and squamous cell carcinomas (SCC25) cells that were incubated with these vesicles, evaluated by a cell viability assay, increased with the percentage of DXDAB that was incorporated and was inversely proportional to the chain length of DXDAB. The morphological features (round shape, chromatin condensation and apoptosis bodies) and results of flow cytometry analysis (increased sub-G(1) fraction) confirmed the induction of apoptosis in HaCaT and SCC25 cells by cationic vesicles. Apoptosis caused by cationic vesicles without the addition of any drugs was observed for the first time in HaCaT and SCC25 cells. The results of this investigation suggest that cytotoxicity is related to the zeta potential of the cationic vesicles.
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Affiliation(s)
- Chia-Hua Liang
- Department of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
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21
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Gillet JP, Macadangdang B, Fathke RL, Gottesman MM, Kimchi-Sarfaty C. The development of gene therapy: from monogenic recessive disorders to complex diseases such as cancer. Methods Mol Biol 2009; 542:5-54. [PMID: 19565894 DOI: 10.1007/978-1-59745-561-9_1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
During the last 4 decades, gene therapy has moved from preclinical to clinical studies for many diseases ranging from monogenic recessive disorders such as hemophilia to more complex diseases such as cancer, cardiovascular disorders, and human immunodeficiency virus (HIV). To date, more than 1,340 gene therapy clinical trials have been completed, are ongoing, or have been approved in 28 countries, using more than 100 genes. Most of those clinical trials (66.5%) were aimed at the treatment of cancer. Early hype, failures, and tragic events have now largely been replaced by the necessary stepwise progress needed to realize clinical benefits. We now understand better the strengths and weaknesses of various gene transfer vectors; this facilitates the choice of appropriate vectors for individual diseases. Continuous advances in our understanding of tumor biology have allowed the development of elegant, more efficient, and less toxic treatment strategies. In this introductory chapter, we review the history of gene therapy since the early 1960s and present in detail two major recurring themes in gene therapy: (1) the development of vector and delivery systems and (2) the design of strategies to fight or cure particular diseases. The field of cancer gene therapy experienced an "awkward adolescence." Although this field has certainly not yet reached maturity, it still holds the potential of alleviating the suffering of many individuals with cancer.
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Affiliation(s)
- Jean-Pierre Gillet
- Laboratory of Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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22
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Wettig SD, Badea I, Donkuru M, Verrall RE, Foldvari M. Structural and transfection properties of amine-substituted gemini surfactant-based nanoparticles. J Gene Med 2007; 9:649-58. [PMID: 17654656 DOI: 10.1002/jgm.1060] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Increases in DNA transfection efficiencies for non-viral vectors can be achieved through rational design of novel cationic building blocks. Based on previous results examining DNA condensation by polyamines, novel gemini surfactants have been designed that incorporate aza or imino substituents within the spacer group in order to increase interactions with DNA and potentially improve their DNA transfection ability. METHODS Transfection efficiencies and cell toxicity of gemini nanoparticles constructed from plasmid DNA, gemini surfactant, and a neutral lipid were measured in COS7 cells using a luciferase assay. Structural properties of nanoparticles were examined by using circular dichroism, particle size, zeta potential, and small-angle X-ray scattering (SAXS) measurements. RESULTS The incorporation of aza and imino substituents within the spacer group was observed to enhance the transfection ability of gemini surfactants. Incorporation of an imino group in the structure of the 1,9-bis(dodecyl)-1,1,9,9-tetramethyl-5-imino-1,9-nonanediammonium dibromide surfactant (12-7NH-12) resulted in a statistically significant (p < 0.01) 9-fold increase in transfection compared to an unsubstituted gemini surfactant and a 3-fold increase compared to the corresponding aza-substituted compound. A pH-dependent transition in size and zeta potential was observed to occur at pH 5.5 for complexes formed from the 12-7NH-12 compound. SAXS results show weakly ordered structures and the presence of multiple phases. CONCLUSIONS The incorporation of a pH-active imino group within the spacer of the gemini surfactant results in a significant increase in transfection efficiency that can be related to both pH-induced changes in nanoparticle structure and the formation of multiple phases that more readily allow for membrane fusion that may facilitate DNA release.
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Affiliation(s)
- Shawn D Wettig
- School of Pharmacy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
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23
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Dass CR, Choong PFM. Targeting of small molecule anticancer drugs to the tumour and its vasculature using cationic liposomes: lessons from gene therapy. Cancer Cell Int 2006; 6:17. [PMID: 16792817 PMCID: PMC1524816 DOI: 10.1186/1475-2867-6-17] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2006] [Accepted: 06/23/2006] [Indexed: 12/02/2022] Open
Abstract
Cationic (positively charged) liposomes have been tested in various gene therapy clinical trials for neoplastic and other diseases. They have demonstrated selectivity for tumour vascular endothelial cells raising hopes for both antiangiogenic and antivascular therapies. They are also capable of being selectively delivered to the lungs and liver when administered intravenously. These vesicles are being targeted to the tumour in various parts of the body by using advanced liposomal systems such as ligand-receptor and antibody-antigen combinations. At present, the transferrin receptor is commonly used for cancer-targeted drug delivery systems including cationic liposomes. This review looks at the growing utility of these vesicles for delivery of small molecule anticancer drugs.
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Affiliation(s)
- Crispin R Dass
- Department of Orthopaedics, University of Melbourne, St. Vincent's Hospital Melbourne, Australia
| | - Peter FM Choong
- Department of Orthopaedics, University of Melbourne, St. Vincent's Hospital Melbourne, Australia
- Bone and Soft Tissue Sarcoma Service, Peter MacCallum Cancer Institute, Melbourne, Australia
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24
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Lv H, Zhang S, Wang B, Cui S, Yan J. Toxicity of cationic lipids and cationic polymers in gene delivery. J Control Release 2006; 114:100-9. [PMID: 16831482 DOI: 10.1016/j.jconrel.2006.04.014] [Citation(s) in RCA: 1564] [Impact Index Per Article: 86.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Accepted: 04/26/2006] [Indexed: 12/16/2022]
Abstract
Gene therapy, as a promising therapeutics to treat genetic or acquired diseases, has achieved exciting development in the past two decades. Appropriate gene vectors can be crucial for gene transfer. Cationic lipids and polymers, the most important non-viral vectors, have many advantages over viral ones as non-immunogenic, easy to produce and not oncogenic. They hold the promise to replace viral vectors to be used in clinic. However, the toxicity is still an obstacle to the application of non-viral vectors to gene therapy. For overcoming the problem, many new cationic compounds have been developed. This article provides a review with respect to toxicity of cationic lipids and polymers in gene delivery. We evaluate the structural features of cationic compounds and summarize the relationship of toxicity and structure and hope to provide available suggestions on the development of these cationic compounds.
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Affiliation(s)
- Hongtao Lv
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
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25
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Dass CR, Choong PFM. Selective gene delivery for cancer therapy using cationic liposomes: in vivo proof of applicability. J Control Release 2006; 113:155-63. [PMID: 16764960 DOI: 10.1016/j.jconrel.2006.04.009] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2006] [Revised: 04/06/2006] [Accepted: 04/06/2006] [Indexed: 10/24/2022]
Abstract
Targeted gene therapy is essential if cancer treatment is to become a reality with this form of therapy. In the past few years, cationic liposomes, discovered 2 decades ago, and at present, the most commonly used class of transfection reagents, have been tested in various clinical trials for diseases not restricted to cancer. They have been shown to be selective for tumour vascular endothelial cells raising hopes for antiangiogenic and antivascular therapies. They are also capable of being selectively delivered to the lungs and liver when administered intravenously. These vesicles are also being targeted to the tumour in various parts of the body by using advanced liposomal systems such as antibody-antigen and ligand-receptor combinations. This review looks at the state of play in this rapidly growing field.
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Affiliation(s)
- Crispin R Dass
- Department of Orthopaedics, University of Melbourne, St. Vincent's Hospital Melbourne, P.O. Box 2900, Fitzroy 3065, Australia.
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26
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Joseph A, Itskovitz-Cooper N, Samira S, Flasterstein O, Eliyahu H, Simberg D, Goldwaser I, Barenholz Y, Kedar E. A new intranasal influenza vaccine based on a novel polycationic lipid—ceramide carbamoyl-spermine (CCS). Vaccine 2006; 24:3990-4006. [PMID: 16516356 DOI: 10.1016/j.vaccine.2005.12.017] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2005] [Accepted: 12/07/2005] [Indexed: 11/17/2022]
Abstract
Although most pathogens use the mucosal routes for invasion, the majority of currently available vaccines are administered parenterally. Injectable vaccines induce good systemic immunity but often unsatisfactory mucosal immunity. A non-injectable mucosal vaccine, which can be self-administered intranasally, may provide both effective systemic and mucosal immunity and can be used for vaccination of large populations within a short period of time in case of a sudden epidemic. Here, we report on a new intranasal (i.n.) influenza vaccine, based on a novel polycationic sphingolipid, N-palmitoyl D-erythro-sphingosyl carbamoyl-spermine (ceramide carbamoyl-spermine = CCS), having combined carrier and adjuvant activities, which elicits, in mice, strong systemic (serum) and local (lung and nasal) humoral and cellular responses, and provides protective immunity. In a comparative study, we show that both unmodified commercial vaccine and vaccine formulated with neutral or anionic liposomes were poorly immunogenic upon i.n. administration. Of five vaccine formulations based on well-established monocationic lipids in the form of unsized liposomes, three (DC-Chol, DDAB, and DSTAP-based) resulted in low serum and local responses, while two others (DMTAP and DOTAP-based vaccines) induced both systemic and local vigorous Th1+Th2 immune responses. However, only the vaccine formulated with CCS was equivalent or superior to the commercial vaccine co-administered with cholera toxin as an adjuvant. Furthermore, the CCS-based influenza vaccine was highly efficacious following a single or a repeated (x2) i.n. or a single i.m. administration, without an added adjuvant, in both young (2 months) and old (18 months) mice. It elicited high titers of strain cross-reactive hemagglutination inhibition (HI) antibodies, and the high antibody titers and protective immunity persisted for at least 9 months. No systemic adverse effects, and only a mild local inflammatory response, were observed in mice and rabbits vaccinated i.n. with the CCS vaccine formulation. A similar approach may prove efficacious for i.n. vaccination against other pathogens.
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Affiliation(s)
- Aviva Joseph
- The Lautenberg Center for General and Tumor Immunology, The Hebrew University-Hadassah Medical School, P.O. Box 12272, Jerusalem 91120, Israel
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27
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Cao A, Briane D, Coudert R. Chapter 5: Cationic Liposomes as Transmembrane Carriers of Nucleic Acids. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/s1554-4516(06)04005-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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28
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Simberg D, Weiss A, Barenholz Y. Reversible mode of binding of serum proteins to DOTAP/cholesterol Lipoplexes: a possible explanation for intravenous lipofection efficiency. Hum Gene Ther 2005; 16:1087-96. [PMID: 16149907 DOI: 10.1089/hum.2005.16.1087] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
There are many indications that interaction of serum proteins with intravenously injected cationic lipoplexes disturbs lipofection in vitro and in vivo. However, transfection with certain lipid compositions such as N-[1- (2,3-dioleoyloxy)propyl]-N,N,N-trimethylammonium chloride (DOTAP)/cholesterol appears to be more resistant to serum and more efficacious. We investigated the mechanism of interaction between fluorescently labeled lipoplexes of the above composition and fluorescently labeled serum proteins. Fluorescence resonance energy transfer measurements in vitro indicate that serum proteins interact instantly and closely with the DOTAP/cholesterol lipoplexes. In accord with this, preinjection of fluorescently labeled serum into mice before injection of lipoplexes showed an immediate association of proteins with lipoplexes. Serum proteins colocalized with the lipoplexes in the lung vasculature; however, they dissociated from the cationic lipid as soon as 1 hr postinjection, probably because of displacement of serum proteins from lipoplexes by extracellular proteoglycans. Indeed, this displacement was imitated by heparin, a typical glycosaminoglycan, and could be explained by the inability of weakly acidic serum proteins to neutralize the DOTAP/cholesterol electrical surface potential psi0. The stability of the cationic lipid psi0 in serum could be a key reason for the high lung association and transfection efficiency with this formulation.
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Affiliation(s)
- Dmitri Simberg
- Laboratory of Membrane and Liposome Research, Department of Biochemistry, Hebrew University-Hadassah Medical School, Jerusalem 91120, Israel
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30
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Simberg D, Weiss A, Barenholz Y. Reversible Mode of Binding of Serum Proteins to DOTAP/Cholesterol Lipoplexes: A Possible Explanation for Intravenous Lipofection Efficiency. Hum Gene Ther 2005. [DOI: 10.1089/hum.2005.16.ft-112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Hirsch-Lerner D, Zhang M, Eliyahu H, Ferrari ME, Wheeler CJ, Barenholz Y. Effect of “helper lipid” on lipoplex electrostatics. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2005; 1714:71-84. [PMID: 16051183 DOI: 10.1016/j.bbamem.2005.04.008] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2004] [Revised: 03/24/2005] [Accepted: 04/15/2005] [Indexed: 11/28/2022]
Abstract
Lipoplexes, which are complexes between cationic liposomes (L+) and nucleic acids, are commonly used as a nucleic acid delivery system in vitro and in vivo. This study aimed to better characterize cationic liposome and lipoplex electrostatics, which seems to play a major role in the formation and the performance of lipoplexes in vitro and in vivo. We characterized lipoplexes based on two commonly used monocationic lipids, DOTAP and DMRIE, and one polycationic lipid, DOSPA--each with and without helper lipid (cholesterol or DOPE). Electrical surface potential (Psi0) and surface pH were determined using several surface pH-sensitive fluorophores attached either to a one-chain lipid (4-heptadecyl hydroxycoumarin (C17HC)) or to the primary amino group of the two-chain lipids (1,2-dioleyl-sn-glycero-3-phosphoethanolamine-N-carboxyfluorescein (CFPE) and 1,2-dioleyl-sn-glycero-3-phosphoethanolamine-N-7-hydroxycoumarin) (HC-DOPE). Zeta potentials of the DOTAP-based cationic liposomes and lipoplexes were compared with Psi0 determined using C17HC. The location and relatively low sensitivity of fluorescein to pH changes explains why CFPE is the least efficient in quantifying the differences between the various cationic liposomes and lipoplexes used in this study. The fact that, for all cationic liposomes studied, those containing DOPE as helper lipid have the least positive Psi0 indicates neutralization of the cationic charge by the negatively-charged phosphodiester of the DOPE. Zeta potential is much less positively charged than Psi0 determined by C17HC. The electrostatics affects size changes that occurred to the cationic liposomes upon lipoplex formation. The largest size increase (based on static light scattering measurements) for all formulations occurred at DNA-/L+ charge ratios 0.5-1. Comparing the use of the one-chain C17HC and the two-chain HC-DOPE for monitoring lipoplex electrostatics reveals that both are suitable, as long as there is no serum (or other lipidic assemblies) present in the medium; in the latter case, only the two-chain HC-DOPE gives reliable results. Increasing NaCl concentrations decrease surface potential. Neutralization by DNA is reduced in a NaCl-concentration-dependent manner.
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Affiliation(s)
- Danielle Hirsch-Lerner
- Laboratory of Membrane and Liposome Research, Department of Biochemistry, Hebrew University-Hadassah Medical School, PO Box 12272, Jerusalem 91120, Israel.
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32
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Weisman S, Hirsch-Lerner D, Barenholz Y, Talmon Y. Nanostructure of cationic lipid-oligonucleotide complexes. Biophys J 2004; 87:609-14. [PMID: 15240493 PMCID: PMC1304382 DOI: 10.1529/biophysj.103.033480] [Citation(s) in RCA: 90] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2003] [Accepted: 03/18/2004] [Indexed: 01/29/2023] Open
Abstract
Complexes (lipoplexes) between cationic liposomes and single-strand oligodeoxynucleotides (ODN) are potential delivery systems for antisense therapy. The nanometer-scale morphology of these assemblies is relevant to their transfection efficiency. In this work the monocationic lipid dioleoyloxytrimethylammoniumpropane, the neutral "helper" lipid cholesterol, and an 18-mer anti-bcl2 ODN were combined at different ratios. The lipoplexes formed were characterized for the quantity of ODN bound, for the degree of lipid mixing, and for their size. The nanostructure of the system was examined by cryogenic-temperature transmission electron microscopy, augmented by small-angle x-ray scattering. Addition of ODN to cationic liposomes induced both liposome aggregation and the formation of a novel condensed lamellar phase. This phase is proposed to be stabilized by anionic single-strand ODN molecules intercalated between cationic bilayers. The proportion of cholesterol present apparently did not affect the nature of lipoplex microstructure, but changed the interlamellar spacing.
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Affiliation(s)
- Sarah Weisman
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
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Congiu A, Pozzi D, Esposito C, Castellano C, Mossa G. Correlation between structure and transfection efficiency: a study of DC-Chol−DOPE/DNA complexes. Colloids Surf B Biointerfaces 2004; 36:43-8. [PMID: 15261022 DOI: 10.1016/j.colsurfb.2004.04.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2004] [Indexed: 11/15/2022]
Abstract
The supramolecular structural nature of some cationic liposomes-DNA complexes, currently used as vehicles in non-viral gene delivery, has been elucidated by recent X-ray diffraction experiments. The relationship between the chemico-physical properties of these self-assembled structures and their transfection efficiency is extensively studied. Here we report a first comprehensive structural study by using energy dispersive X-ray diffraction, of the complex DC-Chol--DOPE/DNA (3beta[N-(N',N'-dimethylaminoethane)-carbamoyl]cholesterol dioleoylphosphatidylethanolamine/DNA), which has been classified as one of the most effective in in-vivo experiments. Our results show that DC-Chol--DOPE/DNA lipoplexes have a columnar inverted hexagonal structure, which is not influenced by the cationic liposome/DNA charge ratio. The transfection efficiency of C6 rat glioma cells by DC-Chol--DOPE/DNA lipoplexes and the toxicity of lipoplexes to cells are dramatically affected by cationic liposome/DNA weight ratio. It seems therefore that the lipoplex structures have not any influence on transfection efficiency and toxicity in our experimental system.
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34
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Percot A, Briane D, Coudert R, Reynier P, Bouchemal N, Lièvre N, Hantz E, Salzmann JL, Cao A. A hydroxyethylated cholesterol-based cationic lipid for DNA delivery: effect of conditioning. Int J Pharm 2004; 278:143-63. [PMID: 15158957 DOI: 10.1016/j.ijpharm.2004.03.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2003] [Revised: 02/24/2004] [Accepted: 03/03/2004] [Indexed: 10/26/2022]
Abstract
We have synthesised a novel cholesterol-based cationic lipid to promote DNA transfer in cells. This lipid, dimethyl hydroxyethyl aminopropane carbamoyl cholesterol iodide (DMHAPC-Chol) contains a biodegradable carbamoyl linker and a hydroxyethyl group in the polar amino head moiety and is characterised by NMR. Liposomes prepared from this lipid and dioleoyl phosphatidyl ethanolamine (DOPE) in equimolar proportion showed a weak cytotoxicity as revealed by MTT assays and are efficient to deliver plasmids DNA evaluated by the expression of reporter genes in vitro and in vivo. In this paper, we present an original method to determine the lipid concentration based on the colorimetric detection of the colipid DOPE and the measure of the molar ratio DOPE/cationic lipid in the liposome by FTIR spectroscopy. The liposomes and lipid/DNA complexes structures were characterized by transmission electron microscopy (TEM) and by quasi-elastic light scattering (QLS). TEM indicated that the complexes correspond to aggregates containing globular substructures with liposomes size. The method of immuno-gold labelling was used to detect plasmid in the complex and reveals the presence of DNA inside the aggregates. Transfection results showed efficient DNA transfer depending on the charge ratio and liposomes conditioning. Gel retardation results indicated that at a molar charge ratio between X = 1.5 and X = 2.5 (depending on the liposome conditioning), all DNA was taken by liposomes. We showed that conditioning by freeze-drying (lyophilization) facilitates storage and improves transfection efficiency. When the liposomes were lyophilized prior to DNA addition or when the complexes were subjected to freeze-thawing cycles, the obtained complexes showed a transfection with levels enhanced up to four and five-fold respectively for the lyophilized liposomes and freeze-thawed complexes. NMR was used to characterize the modifications under freezing which showed an effect on 31P spectra.
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Affiliation(s)
- A Percot
- Laboratoire de Chimie Structurale et Spectroscopie Biomoléculaire (CSSB), CNRS UMR 7033, UFR de Médecine, Université Paris 13, 74 rue Marcel Cachin, Bobigny Cedex F93017, France
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35
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Dass CR. Improving anti-angiogenic therapy via selective delivery of cationic liposomes to tumour vasculature. Int J Pharm 2004; 267:1-12. [PMID: 14602379 DOI: 10.1016/j.ijpharm.2003.08.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In the past three decades, two very important findings regarding tumour vasculature have been made. Firstly, it has been known a solid tumour has to establish an adequate blood supply to grow beyond a critical mass. Secondly, it has been proven that the tumour vasculature is relatively more aberrant, dynamic and permeable than healthy host tissue. This review discusses the potential of delivering therapeutic nucleic acids to tumour vasculature using cationic liposomes, vehicles recently demonstrated to be selectively delivered to tumour vasculature.
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Affiliation(s)
- Crispin R Dass
- Johnson & Johnson Research, Box 4555, Strawberry Hills 2012, Australia.
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36
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Abstract
The field of cancer gene therapy is in continuous expansion, and technology is quickly moving ahead as far as gene targeting and regulation of gene expression are concerned. This review focuses on the endocrine aspects of gene therapy, including the possibility to exploit hormone and hormone receptor functions for regulating therapeutic gene expression, the use of endocrine-specific genes as new therapeutic tools, the effects of viral vector delivery and transgene expression on the endocrine system, and the endocrine response to viral vector delivery. Present ethical concerns of gene therapy and the risk of germ cell transduction are also discussed, along with potential lines of innovation to improve cell and gene targeting.
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Affiliation(s)
- Luisa Barzon
- Department of Histology, Microbiology, and Medical Biotechnologies, University of Padova, I-35121 Padua, Italy
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Simberg D, Weisman S, Talmon Y, Faerman A, Shoshani T, Barenholz Y. The role of organ vascularization and lipoplex-serum initial contact in intravenous murine lipofection. J Biol Chem 2003; 278:39858-65. [PMID: 12869564 DOI: 10.1074/jbc.m302232200] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Following intravenous administration of cationic lipid-DNA complexes (lipoplexes) into mice, transfection (lipofection) occurs predominantly in the lungs. This was attributed to high entrapment of lipoplexes in the extended lung vascular tree. To determine whether lipofection in other organs could be enhanced by increasing the degree of vascularization, we used a transgenic mouse model with tissue-specific angiogenesis in liver. Tail vein injection of N-(1-(2,3-dioleoyloxy)propyl)-N,N,N-trimethylammonium chloride (DOTAP)/cholesterol lipoplexes resulted in increased lipoplex entrapment in hypervascularized liver but did not boost luciferase expression, suggesting that lipoplex delivery is not a sufficient condition for efficient organ lipofection. Because the intravenously injected lipoplexes migrated within seconds to lungs, we checked whether the effects of immediate contact with serum correlate with lung lipofection efficiency of different DOTAP-based formulations. Under conditions mimicking the injection environment, the lipoplex-serum interaction was strongly dependent on helper lipid and ionic strength: lipoplexes prepared in 150 mM NaCl or lipoplexes with high (>33 mol%) cholesterol were found to aggregate immediately. This aggregation process was irreversible and was inversely correlated with the percentage of lung cells that took up lipoplexes and with the efficiency of lipofection. No other structural changes in serum were observed for cholesterol-based lipoplexes. Dioleoyl phosphatidylethanolamine-based lipoplexes were found to give low expression, apparently because of an immediate loss of integrity in serum, without lipid-DNA dissociation. Our study suggests that efficient in vivo lipofection is the result of cross-talk between lipoplex composition, interaction with serum, hemodynamics, and target tissue "susceptibility" to transfection.
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Affiliation(s)
- Dmitri Simberg
- Laboratory of Membrane and Liposome Research, Department of Biochemistry, The Hebrew University-Hadassah Medical School, P. O. Box 12272, Jerusalem 91120, Israel
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Dass CR, Burton MA. Modified microplex vector enhances transfection of cells in culture while maintaining tumour-selective gene delivery in-vivo. J Pharm Pharmacol 2003; 55:19-25. [PMID: 12625863 DOI: 10.1111/j.2042-7158.2003.tb02429.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A non-commercial liposome (dimethyl dioctadecyl ammonium bromide:dioleoyl phosphatidylethanolamine) was compared with a commercial variety (Lipofectamine) for transfection of cultured rat adenocarcinoma cells and in an in-vivo kidney tumour model. Transfection of the cells in culture and in tumours in-vivo was variable with both types of liposomes. A high-dose microplex (lipoplex-microsphere) vector enhanced liposome-mediated transfection of cells in culture. When these high-dose microplexes were tested in-vivo, they were better than both microspherical and liposomal delivery modes in terms of transgene expression levels and the tumour-to-normal tissue ratio of gene delivery. Microplexes have been demonstrated to be capable of not only selective delivery of plasmids to solid tumours, but also of increasing transfection in cell culture, a finding that may be used in ex-vivo transfection studies. It is hypothesized that microspheres anchored the combination vector closer to the cultured cells, allowing attached liposomes to gain easier access into cells. In-vivo, microspheres permitted the microplexes to selectively deliver their genetic payload within the tumour tissue, from where the action of cationic liposomes on cellular membranes facilitated increased access of plasmids into the cytosol of target cells.
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Affiliation(s)
- Crispin R Dass
- Charles Sturt University, Box 588, Wagga Wagga, NSW 2678, Australia.
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