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Fu X, Li J, Wu Y, Mao C, Jiang Y. PAR2 deficiency tunes inflammatory microenvironment to magnify STING signalling for mitigating cancer metastasis via anionic CRISPR/Cas9 nanoparticles. J Control Release 2023; 363:733-746. [PMID: 37827223 DOI: 10.1016/j.jconrel.2023.10.017] [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] [Received: 06/07/2023] [Revised: 09/13/2023] [Accepted: 10/08/2023] [Indexed: 10/14/2023]
Abstract
Metastasis is one of the most significant causes for deterioration of breast cancer, contributing to the clinical failure of anti-tumour drugs. Excessive inflammatory responses intensively promote the occurrence and development of tumour, while protease-activated receptor 2 (PAR2) as a cell membrane receptor actively participates in both tumour cell functions and inflammatory responses. However, rare investigations linked PAR2-mediated inflammatory environment to tumour progression. Clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 technology is an emerging and powerful gene editing technique and can be applied for probing the new role of PAR2 in breast cancer metastasis, but it still needs the development of an efficient and safe delivery system. This work constructed anionic bovine serum albumin (BSA) nanoparticles to encapsulate CRISPR/Cas9 plasmid encoding PAR2 sgRNA and Cas9 (tBSA/Cas9-PAR2) for triggering PAR2 deficiency. tBSA/Cas9-PAR2 remarkably promoted CRISPR/Cas9 to enter and transfect both inflammatory and cancer cells, initiating precise PAR2 gene editing in vitro and in vivo. PAR2 deficiency by tBSA/Cas9-PAR2 effectively suppressed NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome signalling in inflammatory microenvironment to magnify stimulator of interferon genes (STING) signalling, reactive oxygen species (ROS) accumulation and epithelial-mesenchymal transition (EMT) reversal, consequently preventing breast cancer metastasis. Therefore, this study not only demonstrated the involvement and underlying mechanism of PAR2 in tumour progression via modulating inflammatory microenvironment, but also suggested PAR2 deficiency by tBSA/Cas9-PAR2 as an attractive therapeutic strategy candidate for breast cancer metastasis.
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Affiliation(s)
- Xiujuan Fu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Jianbin Li
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yue Wu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Canquan Mao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yuhong Jiang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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Bujan A, Alonso SDV, Chiaramoni NS. Lipopolymers and lipids from lung surfactants in association with N-acetyl-l-cysteine: Characterization and cytotoxicity. Chem Phys Lipids 2020; 231:104936. [PMID: 32589880 DOI: 10.1016/j.chemphyslip.2020.104936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 06/13/2020] [Accepted: 06/17/2020] [Indexed: 11/17/2022]
Abstract
In the present work, we obtained polymeric diacetylene liposomes that can associate N-Acetyl-l-Cysteine (NAC), a broad spectrum mucolytic. The reason for studying these formulations is that they could be applied in the future as NAC delivery systems, with a possible dose reduction but maintaining its effect. Liposomes used herein are obtained by a photopolymerization reaction, thus gaining stability and rigidity. Lipids belonging to lung surfactant were added in different ratios to the formulations in order to maximize its possible interaction with the lung tissue. Because of lipopolymer stability, the oral or nasal route could be appropriated. This formulation could efficiently transport NAC to exert its mucolytic activity and help in diseases such as cystic fibrosis, which has abnormal mucus production. Also, this type of treatment could be useful in other types of diseases, interacting with the mucus layer and making the lung tissue more permeable to other therapies. Formulations so obtained presented high levels of polymerization. Also, they present small hollow fibers structures with a high number of polymeric units. These types of arrangements could present advantages in the field of drug delivery, giving the possibility of a controlled release. Lipopolymers with lipids from lung surfactant associated with NAC are promising complexes in order to treat not only respiratory illnesses. The stability of the formulation would allow its inoculation through other routes such as the oral one, helping the reposition of NAC as an antioxidant drug. Finally, these formulations are non-toxic and easy to produce.
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Affiliation(s)
- Ariana Bujan
- Universidad Nacional de Quilmes, Departamento de Ciencia y Tecnología, Laboratorio de Bio-Nanotecnología, Bernal, Buenos Aires, Argentina; Grupo de Biología Estructural y Biotecnología (GBEyB), IMBICE (CONICET CCT-La Plata), Buenos Aires, Argentina
| | - Silvia Del Valle Alonso
- Universidad Nacional de Quilmes, Departamento de Ciencia y Tecnología, Laboratorio de Bio-Nanotecnología, Bernal, Buenos Aires, Argentina; Grupo de Biología Estructural y Biotecnología (GBEyB), IMBICE (CONICET CCT-La Plata), Buenos Aires, Argentina
| | - Nadia S Chiaramoni
- Universidad Nacional de Quilmes, Departamento de Ciencia y Tecnología, Laboratorio de Bio-Nanotecnología, Bernal, Buenos Aires, Argentina; Grupo de Biología Estructural y Biotecnología (GBEyB), IMBICE (CONICET CCT-La Plata), Buenos Aires, Argentina.
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3
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Bucci PL, Santos MV, Montanari J, Zaritzky N. Nanoferulic: From a by-product of the beer industry toward the regeneration of the skin. J Cosmet Dermatol 2020; 19:2958-2964. [PMID: 32307833 DOI: 10.1111/jocd.13407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/08/2020] [Accepted: 03/18/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Brewers' spent grain (BSG) is one of the most abundant by-products of the beer industry and causes serious environmental problems. Ferulic acid (FA) is an antioxidant with potential cosmeceutical applications. FA was extracted from BSG, developing a method of high extraction performance in order to be encapsulated in ultradeformable liposomes (Nanoferulic, NF). AIMS To obtain a product with high added value such as FA, from a residue currently underused, using simple and economical chemical methods. To load FA into a nanosystem designed for the topical route, its encapsulation has the purpose to take profit from its photoprotective, anti-inflammatory, and antioxidant properties in the deep layers of the skin. METHODS Ferulic acid was obtained from dried BSG using acid and basic treatments in series. NF was prepared by lipid film resuspension of a solution containing FA obtained from BSG. Size and Z-potential were determined. Cytotoxicity was assessed in vitro. Skin penetration was assessed by NF determination at different skin depths and by confocal microscopy. RESULTS The yield of the extraction process was 0.43% on a dry basis. Encapsulation rendered liposomes of around 140 nm with 92% of encapsulation efficiency. No toxicity was observed in all the tested concentrations. Successful results were obtained from the regeneration studies. CONCLUSIONS It was possible to develop a nanosystem containing FA, generating a high-value commercial input for the pharmaceutical and cosmeceutical industry. The use of BSG generated in industrial scale would help to reduce the volume of highly polluting waste.
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Affiliation(s)
- Paula Lorena Bucci
- Centro de Investigación y Desarrollo en Criotecnología de los Alimentos (CONICET, Facultad de Ciencias Exactas UNLP, CIC.PBA, Argentina), Universidad Nacional de la Plata, La Plata, Argentina
| | - María Victoria Santos
- Instituto Andino-Patagónico en Tecnologías Biológicas y Geoambientales (IPATEC) CONICET, Universidad Nacional del Comahue, San Carlos de Bariloche, Argentina
| | - Jorge Montanari
- Departamento de Ciencia y Tecnología, Laboratorio de Bio-Nanotecnologia, Universidad Nacional de Quilmes, Bernal, Argentina.,Grupo de Biología Estructural y Biotecnología (GBEyB), IMBICE (CONICET CCT-La Plata), La Plata, Argentina
| | - Noemi Zaritzky
- Centro de Investigación y Desarrollo en Criotecnología de los Alimentos (CONICET, Facultad de Ciencias Exactas UNLP, CIC.PBA, Argentina), Universidad Nacional de la Plata, La Plata, Argentina.,Depto de Ingeniería Química-Facultad de Ingeniería, Universidad Nacional de la Plata, La Plata, Argentina
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4
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Temprana CF, Prieto MJ, Igartúa DE, Femia AL, Amor MS, Alonso SDV. Diacetylenic lipids in the design of stable lipopolymers able to complex and protect plasmid DNA. PLoS One 2017; 12:e0186194. [PMID: 29020107 PMCID: PMC5636127 DOI: 10.1371/journal.pone.0186194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 09/27/2017] [Indexed: 01/10/2023] Open
Abstract
Different viral and non-viral vectors have been designed to allow the delivery of nucleic acids in gene therapy. In general, non-viral vectors have been associated with increased safety for in vivo use; however, issues regarding their efficacy, toxicity and stability continue to drive further research. Thus, the aim of this study was to evaluate the potential use of the polymerizable diacetylenic lipid 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine (DC8,9PC) as a strategy to formulate stable cationic lipopolymers in the delivery and protection of plasmid DNA. Cationic lipopolymers were prepared following two different methodologies by using DC8,9PC, 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC), and the cationic lipids (CL) 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP), stearylamine (SA), and myristoylcholine chloride (MCL), in a molar ratio of 1:1:0.2 (DMPC:DC8,9PC:CL). The copolymerization methodology allowed obtaining cationic lipopolymers which were smaller in size than those obtained by the cationic addition methodology although both techniques presented high size stability over a 166-day incubation period at 4°C. Cationic lipopolymers containing DOTAP or MCL were more efficient in complexing DNA than those containing SA. Moreover, lipopolymers containing DOTAP were found to form highly stable complexes with DNA, able to resist serum DNAses degradation. Furthermore, neither of the cationic lipopolymers (with or without DNA) induced red blood cell hemolysis, although metabolic activity determined on the L-929 and Vero cell lines was found to be dependent on the cell line, the formulation and the presence of DNA. The high stability and DNA protection capacity as well as the reduced toxicity determined for the cationic lipopolymer containing DOTAP highlight the potential advantage of using lipopolymers when designing novel non-viral carrier systems for use in in vivo gene therapy. Thus, this work represents the first steps toward developing a cationic lipopolymer-based gene delivery system using polymerizable and cationic lipids.
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Affiliation(s)
- C. Facundo Temprana
- Laboratorio de Biomembranas (LBM), Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Argentina
| | - M. Jimena Prieto
- Laboratorio de Biomembranas (LBM), Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Argentina
- Grupo vinculado GBEyB, IMBICE, CICPBA, CCT, La Plata – CONICET
| | - Daniela E. Igartúa
- Laboratorio de Biomembranas (LBM), Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Argentina
- Grupo vinculado GBEyB, IMBICE, CICPBA, CCT, La Plata – CONICET
| | - A. Lis Femia
- Laboratorio de Biomembranas (LBM), Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Argentina
| | - M. Silvia Amor
- Laboratorio de Biomembranas (LBM), Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Argentina
| | - Silvia del Valle Alonso
- Laboratorio de Biomembranas (LBM), Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Argentina
- Grupo vinculado GBEyB, IMBICE, CICPBA, CCT, La Plata – CONICET
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Martinez CS, Igartúa DE, Calienni MN, Feas DA, Siri M, Montanari J, Chiaramoni NS, Alonso SDV, Prieto MJ. Relation between biophysical properties of nanostructures and their toxicity on zebrafish. Biophys Rev 2017; 9:775-791. [PMID: 28884420 DOI: 10.1007/s12551-017-0294-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 07/27/2017] [Indexed: 12/25/2022] Open
Abstract
In recent years, the use of commercial nanoparticles in different industry and health fields has increased exponentially. However, the uncontrolled application of nanoparticles might present a potential risk to the environment and health. Toxicity of these nanoparticles is usually evaluated by a fast screening assay in zebrafish (Danio rerio). The use of this vertebrate animal model has grown due to its small size, great adaptability, high fertilization rate and fast external development of transparent embryos. In this review, we describe the toxicity of different micro- and nanoparticles (carbon nanotubes, dendrimers, emulsions, liposomes, metal nanoparticles, and solid lipid nanoparticles) associated to their biophysical properties using this model. The main biophysical properties studied are size, charge and surface potential due to their impact on the environment and health effects. The review also discusses the correlation of the effects of the different nanoparticles on zebrafish. Special focus is made on morphological abnormalities, altered development and abnormal behavior. The last part of the review debates changes that should be made in future directions in order to improve the use of the zebrafish model to assess nanotoxicity.
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Affiliation(s)
- C S Martinez
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - D E Igartúa
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - M N Calienni
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - D A Feas
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - M Siri
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - J Montanari
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - N S Chiaramoni
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - S Del V Alonso
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina.
| | - M J Prieto
- Laboratorio de Biomembranas LBM-GBEyB-IMBICE-CONICET, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina.
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6
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Bandeira E, Lopes-Pacheco M, Chiaramoni N, Ferreira D, Fernandez-Ruocco MJ, Prieto MJ, Maron-Gutierrez T, Perrotta RM, de Castro-Faria-Neto HC, Rocco PRM, Alonso SDV, Morales MM. Association with Amino Acids Does Not Enhance Efficacy of Polymerized Liposomes As a System for Lung Gene Delivery. Front Physiol 2016; 7:151. [PMID: 27199766 PMCID: PMC4844622 DOI: 10.3389/fphys.2016.00151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 04/08/2016] [Indexed: 11/13/2022] Open
Affiliation(s)
- Elga Bandeira
- Laboratory of Cellular and Molecular Physiology, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de JaneiroRio de Janeiro, Brazil
- Laboratory of Pulmonary Investigation, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de JaneiroRio de Janeiro, Brazil
| | - Miquéias Lopes-Pacheco
- Laboratory of Cellular and Molecular Physiology, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de JaneiroRio de Janeiro, Brazil
- Laboratory of Pulmonary Investigation, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de JaneiroRio de Janeiro, Brazil
| | - Nadia Chiaramoni
- Laboratory of Biomembranes, Department of Science and Technology, National University of QuilmesBuenos Aires, Argentina
| | - Débora Ferreira
- Laboratory of Cellular and Molecular Physiology, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de JaneiroRio de Janeiro, Brazil
| | - Maria J. Fernandez-Ruocco
- Laboratory of Biomembranes, Department of Science and Technology, National University of QuilmesBuenos Aires, Argentina
| | - Maria J. Prieto
- Laboratory of Biomembranes, Department of Science and Technology, National University of QuilmesBuenos Aires, Argentina
| | | | - Ramiro M. Perrotta
- Laboratory of Biomembranes, Department of Science and Technology, National University of QuilmesBuenos Aires, Argentina
| | | | - Patricia R. M. Rocco
- Laboratory of Pulmonary Investigation, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de JaneiroRio de Janeiro, Brazil
| | - Silvia del Valle Alonso
- Laboratory of Biomembranes, Department of Science and Technology, National University of QuilmesBuenos Aires, Argentina
| | - Marcelo M. Morales
- Laboratory of Cellular and Molecular Physiology, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de JaneiroRio de Janeiro, Brazil
- *Correspondence: Marcelo M. Morales
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7
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Igartúa DE, Calienni MN, Feas DA, Chiaramoni NS, Del Valle Alonso S, Prieto MJ. Development of Nutraceutical Emulsions as Risperidone Delivery Systems: Characterization and Toxicological Studies. J Pharm Sci 2015; 104:4142-4152. [DOI: 10.1002/jps.24636] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 08/14/2015] [Accepted: 08/17/2015] [Indexed: 11/06/2022]
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Tagalakis AD, Kenny GD, Bienemann AS, McCarthy D, Munye MM, Taylor H, Wyatt MJ, Lythgoe MF, White EA, Hart SL. PEGylation improves the receptor-mediated transfection efficiency of peptide-targeted, self-assembling, anionic nanocomplexes. J Control Release 2013; 174:177-87. [PMID: 24269968 DOI: 10.1016/j.jconrel.2013.11.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 11/10/2013] [Accepted: 11/13/2013] [Indexed: 01/04/2023]
Abstract
Non-viral vector formulations comprise typically complexes of nucleic acids with cationic polymers or lipids. However, for in vivo applications cationic formulations suffer from problems of poor tissue penetration, non-specific binding to cells, interaction with serum proteins and cell adhesion molecules and can lead to inflammatory responses. Anionic formulations may provide a solution to these problems but they have not been developed to the same extent as cationic formulations due to difficulties of nucleic acid packaging and poor transfection efficiency. We have developed novel PEGylated, anionic nanocomplexes containing cationic targeting peptides that act as a bridge between PEGylated anionic liposomes and plasmid DNA. At optimized ratios, the components self-assemble into anionic nanocomplexes with a high packaging efficiency of plasmid DNA. Anionic PEGylated nanocomplexes were resistant to aggregation in serum and transfected cells with a far higher degree of receptor-targeted specificity than their homologous non-PEGylated anionic and cationic counterparts. Gadolinium-labeled, anionic nanoparticles, administered directly to the brain by convection-enhanced delivery displayed improved tissue penetration and dispersal as well as more widespread cellular transfection than cationic formulations. Anionic PEGylated nanocomplexes have widespread potential for in vivo gene therapy due to their targeted transfection efficiency and ability to penetrate tissues.
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Affiliation(s)
- Aristides D Tagalakis
- Wolfson Centre for Gene Therapy of Childhood Disease, UCL Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK.
| | - Gavin D Kenny
- Wolfson Centre for Gene Therapy of Childhood Disease, UCL Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Alison S Bienemann
- Functional Neurosurgery Research Group, School of Clinical Sciences, AMBI Labs, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK
| | - David McCarthy
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Mustafa M Munye
- Wolfson Centre for Gene Therapy of Childhood Disease, UCL Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
| | - Hannah Taylor
- Functional Neurosurgery Research Group, School of Clinical Sciences, AMBI Labs, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK
| | - Marcella J Wyatt
- Functional Neurosurgery Research Group, School of Clinical Sciences, AMBI Labs, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK
| | - Mark F Lythgoe
- UCL Centre for Advanced Biological Imaging, Division of Medicine and Institute of Child Health, University College London, 72 Huntley Street, London, WC1E 6DD, UK
| | - Edward A White
- Functional Neurosurgery Research Group, School of Clinical Sciences, AMBI Labs, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK
| | - Stephen L Hart
- Wolfson Centre for Gene Therapy of Childhood Disease, UCL Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH, UK
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Da Silva AL, Santos RS, Xisto DG, Alonso SDV, Morales MM, Rocco PRM. Nanoparticle-based therapy for respiratory diseases. AN ACAD BRAS CIENC 2013; 85:137-46. [PMID: 23460424 DOI: 10.1590/s0001-37652013005000018] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 06/28/2011] [Indexed: 11/21/2022] Open
Abstract
Nanotechnology is an emerging science with the potential to create new materials and strategies involving manipulation of matter at the nanometer scale (<100 nm). With size-dependent properties, nanoparticles have introduced a new paradigm in pharmacotherapy - the possibility of cell-targeted drug delivery with minimal systemic side effects and toxicity. The present review provides a summary of published findings, especially regarding to nanoparticle formulations for lung diseases. The available data have shown some benefits with nanoparticle-based therapy in the development of the disease and lung remodeling in respiratory diseases. However, there is a wide gap between the concepts of nanomedicine and the published experimental data and clinical reality. In addition, studies are still required to determine the potential of nanotherapy and the systemic toxicity of nanomaterials for future human use.
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Affiliation(s)
- Adriana L Da Silva
- Laboratório de Investigação Pulmonar, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, RJ, Brasil
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Cationic liposome coupled endostatin gene for treatment of peritoneal colon cancer. Clin Exp Metastasis 2010; 27:307-18. [PMID: 20373131 DOI: 10.1007/s10585-010-9328-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2009] [Accepted: 03/26/2010] [Indexed: 01/24/2023]
Abstract
Therapy targeting cancer blood vessels requires unwavering pharmacokinetics of antiangiogenic therapeutics to neutralize the excess pro-angiogenic factors constantly secreted by tumor cells. Gene therapies have been explored to effectively create a microenvironment less favorable for angiogenesis and tumor expansion. In this study, we examined the inhibitory effect of cationic liposome coupled with the murine endostatin gene (Lipo/mEndo) on growth of intraperitoneal disseminated colon cancer models. Intraperitoneal injection of Lipo/mEndo inhibited bioluminescent signals emitted from CT26 colon cancer cells stably expressing luciferase in the living mice and prolonged their survival times. Endostatin gene therapy suppressed the colony forming capability and VEGF concentration of ascites obtained from treated mice by 74 and 60%, respectively. When tested in a similar model using HCT116 human colon cancer cells, Lipo/mEndo and bevacizumab displayed comparable repressive effects on ascites formation and tumor foci dissemination on mesentery of experimental mice. Our results implicate that cationic liposome coupled endostatin gene therapy may be a clinically effective treatment for intraperitoneal disseminated colon cancer.
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