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Santo D, Cordeiro RA, Mendonça P, Serra A, Coelho JFJ, Faneca H. Glycopolymers Mediate Suicide Gene Therapy in ASGPR-Expressing Hepatocellular Carcinoma Cells in Tandem with Docetaxel. Biomacromolecules 2023; 24:1274-1286. [PMID: 36780314 PMCID: PMC10015461 DOI: 10.1021/acs.biomac.2c01329] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Cationic glycopolymers stand out as gene delivery nanosystems due to their inherent biocompatibility and high binding affinity to the asialoglycoprotein receptor (ASGPR), a target receptor overexpressed in hepatocellular carcinoma (HCC) cells. However, their synthesis procedure remains laborious and complex, with problems of solubilization and the need for protection/deprotection steps. Here, a mini-library of well-defined poly(2-aminoethyl methacrylate hydrochloride-co-poly(2-lactobionamidoethyl methacrylate) (PAMA-co-PLAMA) glycopolymers was synthesized by activators regenerated by electron transfer (ARGET) ATRP to develop an efficient gene delivery nanosystem. The glycoplexes generated had suitable physicochemical properties and showed high ASGPR specificity and high transfection efficiency. Moreover, the HSV-TK/GCV suicide gene therapy strategy, mediated by PAMA144-co-PLAMA19-based nanocarriers, resulted in high antitumor activity in 2D and 3D culture models of HCC, which was significantly enhanced by the combination with small amounts of docetaxel. Overall, our results demonstrated the potential of primary-amine polymethacrylate-containing-glycopolymers as HCC-targeted suicide gene delivery nanosystems and highlight the importance of combined strategies for HCC treatment.
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Affiliation(s)
- Daniela Santo
- Center
for Neuroscience and Cell Biology, University
of Coimbra, Coimbra 3004-504, Portugal
- Institute
for Interdisciplinary Research, University
of Coimbra, Coimbra 3030-789, Portugal
| | - Rosemeyre A. Cordeiro
- Center
for Neuroscience and Cell Biology, University
of Coimbra, Coimbra 3004-504, Portugal
- Institute
for Interdisciplinary Research, University
of Coimbra, Coimbra 3030-789, Portugal
| | - Patrícia
V. Mendonça
- Centre
for Mechanical Engineering, Materials and Processes, Department of
Chemical Engineering, University of Coimbra, Coimbra 3030-790, Portugal
| | - Arménio
C. Serra
- Centre
for Mechanical Engineering, Materials and Processes, Department of
Chemical Engineering, University of Coimbra, Coimbra 3030-790, Portugal
| | - Jorge F. J. Coelho
- Centre
for Mechanical Engineering, Materials and Processes, Department of
Chemical Engineering, University of Coimbra, Coimbra 3030-790, Portugal
- Associação
para a Inovação e Desenvolvimento Em Ciência
e Tecnologia, IPN—Instituto Pedro
Nunes, Rua Pedro Nunes, 3030-199 Coimbra, Portugal
| | - Henrique Faneca
- Center
for Neuroscience and Cell Biology, University
of Coimbra, Coimbra 3004-504, Portugal
- Institute
for Interdisciplinary Research, University
of Coimbra, Coimbra 3030-789, Portugal
- . Phone: +351-239-820-190. Fax: +351- 239-853-607
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2
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Cordeiro RA, Mendonça PV, Coelho J, Faneca H. Engineering silica-polymer hybrid nanosystems for dual drug and gene delivery. BIOMATERIALS ADVANCES 2022; 135:212742. [PMID: 35929215 DOI: 10.1016/j.bioadv.2022.212742] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/23/2022] [Accepted: 02/27/2022] [Indexed: 06/15/2023]
Abstract
In recent years, it has been shown that a combination of different antitumour strategies involving distinct therapeutic agents, such as chemical compounds and genetic material, could result in an effective therapeutic activity that is much higher than that obtained by conventionally used individual approaches. Therefore, the main goal of this work was to develop a new hybrid nanosystem based on mesoporous silica nanoparticles and polymers to efficiently transport and deliver drug and plasmid DNA into cancer cells. Moreover, its potential to mediate a combinatorial antitumour strategy involving epirubicin and herpes simplex virus thymidine kinase/ganciclovir (HSV-TK/GCV) gene therapy was evaluated. For this purpose, various cationic polymers were assessed, including poly(β-amino ester) homopolymer, gelatine type A, gelatine type B, and poly(ethylene glycol)-b-poly(2-aminoethyl methacrylate hydrochloride) block copolymer. The obtained results show that using different polymers leads to nanosystems with different physicochemical properties and, consequently, different biological activities. The best formulation was obtained for hybrid nanosystems coated with PEG-b-PAMA. They demonstrated the ability to cotransport and codeliver an anticancer drug and plasmid DNA and effectively mediate the combined antitumour strategy in 2D and 3D tumour cell culture models. In summary, we developed a novel silica- and polymer-based nanosystem able to mediate a dual chemotherapeutic and suicide gene therapy strategy with a much higher therapeutic effect than that obtained through the use of individual approaches, showing its potential for cancer treatment.
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Affiliation(s)
- Rosemeyre A Cordeiro
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
| | - Patrícia V Mendonça
- University of Coimbra, Centre for Mechanical Engineering, Materials and Processes, Department of Chemical Engineering, Rua Sílvio Lima-Polo II, 3030-790 Coimbra, Portugal
| | - Jorge Coelho
- University of Coimbra, Centre for Mechanical Engineering, Materials and Processes, Department of Chemical Engineering, Rua Sílvio Lima-Polo II, 3030-790 Coimbra, Portugal
| | - Henrique Faneca
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal.
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3
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Gonçalves FAMM, Fonseca A, Cordeiro R, Piedade A, Faneca H, Serra A, Coelho JFJ. Fabrication of 3D scaffolds based on fully biobased unsaturated polyester resins by microstereo-lithography. Biomed Mater 2022; 17. [PMID: 35026736 DOI: 10.1088/1748-605x/ac4b46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 01/13/2022] [Indexed: 11/12/2022]
Abstract
Additive Manufacturing (AM) technologies are an effective route to fabricate tailor made scaffolds for tissue engineering (TE) and regenerative medicine with microstereo-lithography (µSLA) being one of the most promising techniques to produce high quality 3D structures. Here, we report the crosslinking studies of fully biobased unsaturated polyesters (UPs) with 2-hydroxyethyl methacrylate (HEMA) as the unsaturated monomer (UM), using thermal and µSLA crosslinking processes. The resulting resins were fully characterized in terms of their thermal and mechanical properties. Determination of gel content, water contact angle (WCA), topography and morphology analysis by atomic force microscopy (AFM) and scanning electron microscopy (SEM) were also performed. The results show that the developed unsaturated polyester resins (UPRs) have promising properties for µSLA. In vitro cytotoxicity assays performed with 3T3-L1 cell lines showed that the untreated scaffolds exhibited a maximum cellular viability around 60 %, which was attributed to the acidic nature of the UPRs. The treatment of the UPRs and scaffolds with ethanol (EtOH) improved the cellular viability to 100%. The data presented in this manuscript contribute to improve the performance of biobased unsaturated polyesters in additive manufacturing.
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Affiliation(s)
- Filipa A M M Gonçalves
- Chemical Engineering, University of Coimbra Faculty of Sciences and Technology, Rua Sílvio Lima-PóloII, Coimbra, Coimbra, 3030-790, PORTUGAL
| | - Ana Fonseca
- Chemical Engineering, University of Coimbra Faculty of Sciences and Technology, Rua Sílvio Lima-PóloII, Coimbra, Coimbra, 3030-790, PORTUGAL
| | - Rosemeyre Cordeiro
- Centre for Neuroscience and Cell Biology, Rua Larga - Faculdade de Medicina, Coimbra, 3004-504 , PORTUGAL
| | - Ana Piedade
- Mechanical Engineering, University of Coimbra Faculty of Sciences and Technology, R. Luis Reis dos Santos, Coimbra, Coimbra, 3030-194, PORTUGAL
| | - Henrique Faneca
- Center for Neuroscience and Cell Biology, Rua Larga - Faculdade de Medicina, Coimbra, 3004-504, PORTUGAL
| | - Arménio Serra
- Chemical Engineering, University of Coimbra Faculty of Sciences and Technology, Rua Sílvio Lima-PóloII, Coimbra, Coimbra, 3030-790, PORTUGAL
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Abstract
RNA-based therapeutics have shown great promise in treating a broad spectrum of diseases through various mechanisms including knockdown of pathological genes, expression of therapeutic proteins, and programmed gene editing. Due to the inherent instability and negative-charges of RNA molecules, RNA-based therapeutics can make the most use of delivery systems to overcome biological barriers and to release the RNA payload into the cytosol. Among different types of delivery systems, lipid-based RNA delivery systems, particularly lipid nanoparticles (LNPs), have been extensively studied due to their unique properties, such as simple chemical synthesis of lipid components, scalable manufacturing processes of LNPs, and wide packaging capability. LNPs represent the most widely used delivery systems for RNA-based therapeutics, as evidenced by the clinical approvals of three LNP-RNA formulations, patisiran, BNT162b2, and mRNA-1273. This review covers recent advances of lipids, lipid derivatives, and lipid-derived macromolecules used in RNA delivery over the past several decades. We focus mainly on their chemical structures, synthetic routes, characterization, formulation methods, and structure-activity relationships. We also briefly describe the current status of representative preclinical studies and clinical trials and highlight future opportunities and challenges.
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Affiliation(s)
- Yuebao Zhang
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Changzhen Sun
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Chang Wang
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Katarina E Jankovic
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Yizhou Dong
- Division of Pharmaceutics & Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Department of Biomedical Engineering, The Center for Clinical and Translational Science, The Comprehensive Cancer Center, Dorothy M. Davis Heart & Lung Research Institute, Department of Radiation Oncology, The Ohio State University, Columbus, Ohio 43210, United States
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Beg S, Almalki WH, Khatoon F, Alharbi KS, Alghamdi S, Akhter MH, Khalilullah H, Baothman AA, Hafeez A, Rahman M, Akhter S, Choudhry H. Lipid/polymer-based nanocomplexes in nucleic acid delivery as cancer vaccines. Drug Discov Today 2021; 26:1891-1903. [PMID: 33610757 DOI: 10.1016/j.drudis.2021.02.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/13/2020] [Accepted: 02/15/2021] [Indexed: 12/24/2022]
Abstract
Cancer vaccines consist of nucleic acid derivatives such as plasmid DNA, small interfering RNA and mRNA, and can be customized according to the patient's needs. Nanomedicines have proven to be exceptionally good as miniaturized drug carriers, and thus they offer great advantages for delivering cancer vaccines. This review provides an overview of the literature on cancer vaccines, from their inception to current developments in the field.
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Affiliation(s)
- Sarwar Beg
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India.
| | - Waleed H Almalki
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Fahmida Khatoon
- Department of Biochemistry, College of Medicine, University of Hail, Saudi Arabia
| | - Khalid S Alharbi
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakakah, Saudi Arabia
| | - Saad Alghamdi
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | | | - Habibullah Khalilullah
- Department of Pharmaceutical Chemistry and Pharmacognosy, Unaizah College of Pharmacy, Qassim University, Saudi Arabia
| | - Abdullah A Baothman
- Ministry of National Guard-Health Affairs, King Saud Bin Abdulaziz University for Health Science (KSAU-HS), King Abdullah International Medical Research Center (KAIMARC), Saudi Arabia
| | - Abdul Hafeez
- Glocal School of Pharmacy, Glocal University, Mirzapur Pole, Sahranpur, Uttar Pradesh, India
| | - Mahfoozur Rahman
- Department of Pharmaceutical Sciences, SIHAS, Faculty of Health Science, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad, India.
| | - Sohail Akhter
- New Product Development, Global R&D, Sterile ops, TEVA Pharmaceutical Industries Ltd., Aston Ln N, Halton, Preston Brook, Runcorn WA7 3FA, UK; Centre de Biophysique Moléculaire, CNRS UPR4301, Rue Charles Sadron, 45071 Orléans Cedex 2, France
| | - Hani Choudhry
- Department of Biochemistry, Cancer Metabolism & Epigenetic Unit, Faculty of Science, King Fahd Center for Medical Research, King Abdulaziz University, Jeddah, Saudi Arabia
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6
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Supercritically dried superparamagnetic mesoporous silica nanoparticles for cancer theranostics. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 115:111124. [DOI: 10.1016/j.msec.2020.111124] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 05/20/2020] [Accepted: 05/25/2020] [Indexed: 12/23/2022]
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7
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Replacing Di(2-ethylhexyl) Terephthalate by Di(2-ethylhexyl) 2,5-Furandicarboxylate for PVC Plasticization: Synthesis, Materials Preparation and Characterization. MATERIALS 2019; 12:ma12142336. [PMID: 31340461 PMCID: PMC6678310 DOI: 10.3390/ma12142336] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/17/2019] [Accepted: 07/19/2019] [Indexed: 11/17/2022]
Abstract
The worldwide regulatory demand for the elimination of non-phthalate compounds for poly(vinyl chloride) (PVC) plasticization has intensified the search for alternatives. Concomitantly, sustainability concerns have highlighted sugar-based 2,5-furandicarboxylic acid as one key renewable-chemical for the development of several products, namely di(2-ethylhexyl) 2,5-furandicarboxylate (DEHF) plasticizer. This study addresses the use of DEHF under a realistic scenario of the co-existence of both DEHF and entirely fossil-based plasticizers. More precisely, original PVC blends using mixtures of non-toxic DEHF and di(2-ethylhexyl) terephthalate ester (DEHT) were designed. The detailed structural, thermal, and mechanical characterization of these materials showed that they all have a set of interesting properties that are compatible with those of commercial DEHT, namely a low glass transition (19.2-23.8 °C) and enhanced elongation at break (up to 330%). Importantly, migration tests under different daily situations, such as for example exudation from food/beverages packages and medical blood bags, reveal very low weight loss percentages. For example, in both distilled water and phosphate buffered saline (PBS) solution, weight loss does not exceed ca. 0.3% and 0.2%, respectively. Viability tests show, for the first time, that up to 500 μM of DEHF, a promising cytotoxic profile is observed, as well as for DEHT. Overall, this study demonstrates that the combination of DEHF and DEHT plasticizers result in a noticeable plasticized PVC with an increased green content with promising cytotoxic results.
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8
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Mohseni-Dargah M, Akbari-Birgani S, Madadi Z, Saghatchi F, Kaboudin B. Carbon nanotube-delivered iC9 suicide gene therapy for killing breast cancer cells in vitro. Nanomedicine (Lond) 2019; 14:1033-1047. [PMID: 30925115 DOI: 10.2217/nnm-2018-0342] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
AIM To induce a safe death to MCF-7 human breast cancer cell line through gene therapy based on iC9 suicide gene. MATERIALS & METHODS To induce apoptosis to MCF-7 cell line, iC9 gene was transfected using pyridine-functionalized multi-walled carbon nanotubes. Then, to enhance chemotherapy, iC9 suicide gene therapy was performed alongside. RESULTS The results show that the MCF-7 cells were efficiently eliminated in a high percentage by this approach. Furthermore, the suicide gene by itself/in combination with the chemotherapeutic drugs managed to pass the cell cycle arrests. CONCLUSION We introduced an in vitro treatment approach based on suicide gene therapy and the first step was taken toward the enhancement of chemotherapy, although more investigation is required.
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Affiliation(s)
- Masoud Mohseni-Dargah
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Shiva Akbari-Birgani
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.,Center for Research in Basic Sciences, & Contemporary Technologies (IASBS), Zanjan, Iran
| | - Zahra Madadi
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Fatemeh Saghatchi
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Babak Kaboudin
- Center for Research in Basic Sciences, & Contemporary Technologies (IASBS), Zanjan, Iran.,Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
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9
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Abstract
Suicide gene therapy has been tested for the treatment of a variety of cancers, including oral cancer. Among the various suicide gene therapy approaches that have been reported, the Herpes Simplex Virus thymidine kinase (HSV-tk)/ganciclovir (GCV) system is one of the most extensively studied systems, holding great promise in cancer therapy. In this chapter, we describe methods to use the HSV-tk/GCV system to achieve antitumor activity, both in cultured oral cancer cells and in orthotopic and subcutaneous murine models of oral squamous cell carcinoma, using ligand-associated lipoplexes for enhancing therapeutic delivery.
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Affiliation(s)
- Henrique Faneca
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Nejat Düzgüneş
- Department of Biomedical Sciences, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, CA, USA
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10
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Passadouro M, Faneca H. Combination of Anti-miRNAs Oligonucleotides with Low Amounts of Chemotherapeutic Agents for Pancreatic Cancer Therapy. Methods Mol Biol 2018; 1699:135-154. [PMID: 29086375 DOI: 10.1007/978-1-4939-7435-1_11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is the most predominant type of pancreatic cancer and presents one of the highest mortality rates when compared with other carcinomas. The absence of efficient treatment options for PDAC prompted us to investigate whether microRNA inhibition, combined or not with chemotherapeutic agents, would constitute a promising therapeutic approach for this disease. In this chapter, we describe several methods and procedures that can be used to evaluate the potential of new therapeutic strategies involving oligonucleotides against overexpressed microRNAs, in PDAC, either alone or in combination with low amounts of chemotherapeutic drugs.
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Affiliation(s)
- Marta Passadouro
- Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504, Coimbra, Portugal.,Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, 3004-517, Coimbra, Portugal
| | - Henrique Faneca
- Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504, Coimbra, Portugal. .,Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, 3004-517, Coimbra, Portugal.
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11
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Gaber M, Medhat W, Hany M, Saher N, Fang JY, Elzoghby A. Protein-lipid nanohybrids as emerging platforms for drug and gene delivery: Challenges and outcomes. J Control Release 2017; 254:75-91. [PMID: 28365294 DOI: 10.1016/j.jconrel.2017.03.392] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 12/24/2022]
Abstract
Nanoparticulate drug delivery systems have been long used to deliver a vast range of drugs and bioactives owing to their ability to demonstrate novel physical, chemical, and/or biological properties. An exponential growth has spurred in research and development of these nanocarriers which led to the evolution of a great number of diverse nanosystems including liposomes, nanoemulsions, solid lipid nanoparticles (SLNs), micelles, dendrimers, polymeric nanoparticles (NPs), metallic NPs, and carbon nanotubes. Among them, lipid-based nanocarriers have made the largest progress whether commercially or under development. Despite this progress, these lipid-based nanocarriers suffer from several limitations that led to the development of many protein-coated lipid nanocarriers. To less extent, protein-based nanocarriers suffer from limitations that led to the fabrication of some lipid bilayer enveloping protein nanocarriers. This review discusses in-depth some limitations associated with the lipid-based or protein-based nanocarriers and the fruitful outcomes brought by protein-lipid hybridization. Also discussed are the various hybridization techniques utilized to formulate these protein-lipid nanohybrids and the mechanisms involved in the drug loading process.
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Affiliation(s)
- Mohamed Gaber
- Cancer Nanotechnology Research Laboratory (CNRL), Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Waseem Medhat
- Cancer Nanotechnology Research Laboratory (CNRL), Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Mark Hany
- Cancer Nanotechnology Research Laboratory (CNRL), Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Nourhan Saher
- Cancer Nanotechnology Research Laboratory (CNRL), Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Jia-You Fang
- Pharmaceutics Laboratory, Graduate Institute of Natural Products, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology and Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Kweishan, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Kweishan, Taoyuan 333, Taiwan.
| | - Ahmed Elzoghby
- Cancer Nanotechnology Research Laboratory (CNRL), Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt; Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt.
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12
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Progress and problems with the use of suicide genes for targeted cancer therapy. Adv Drug Deliv Rev 2016; 99:113-128. [PMID: 26004498 DOI: 10.1016/j.addr.2015.05.009] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 02/19/2015] [Accepted: 05/14/2015] [Indexed: 12/16/2022]
Abstract
Among various gene therapy methods for cancer, suicide gene therapy attracts a special attention because it allows selective conversion of non-toxic compounds into cytotoxic drugs inside cancer cells. As a result, therapeutic index can be increased significantly by introducing high concentrations of cytotoxic molecules to the tumor environment while minimizing impact on normal tissues. Despite significant success at the preclinical level, no cancer suicide gene therapy protocol has delivered the desirable clinical significance yet. This review gives a critical look at the six main enzyme/prodrug systems that are used in suicide gene therapy of cancer and familiarizes readers with the state-of-the-art research and practices in this field. For each enzyme/prodrug system, the mechanisms of action, protein engineering strategies to enhance enzyme stability/affinity and chemical modification techniques to increase prodrug kinetics and potency are discussed. In each category, major clinical trials that have been performed in the past decade with each enzyme/prodrug system are discussed to highlight the progress to date. Finally, shortcomings are underlined and areas that need improvement in order to produce clinical significance are delineated.
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13
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Lee CT, Huang YW, Yang CH, Huang KS. Drug delivery systems and combination therapy by using vinca alkaloids. Curr Top Med Chem 2016; 15:1491-500. [PMID: 25877096 PMCID: PMC4997956 DOI: 10.2174/1568026615666150414120547] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 11/30/2014] [Accepted: 12/20/2014] [Indexed: 01/01/2023]
Abstract
Developing new methods for chemotherapy drug delivery has become a topic of great concern. Vinca alkaloids are among the most widely used chemotherapy reagents for tumor therapy; however, their side effects are particularly problematic for many medical doctors. To reduce the toxicity and enhance the therapeutic efficiency of vinca alkaloids, many researchers have developed strategies such as using liposome-entrapped drugs, chemical- or peptide-modified drugs, polymeric packaging drugs, and chemotherapy drug combinations. This review mainly focuses on the development of a vinca alkaloid drug delivery system and the combination therapy. Five vinca alkaloids (eg, vincristine, vinblastine, vinorelbine, vindesine, and vinflunine) are reviewed.
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Affiliation(s)
| | | | | | - Keng-Shiang Huang
- School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung, Taiwan.
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14
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Koynova R, Tenchov B, MacDonald RC. Nonlamellar Phases in Cationic Phospholipids, Relevance to Drug and Gene Delivery. ACS Biomater Sci Eng 2015; 1:130-138. [DOI: 10.1021/ab500142w] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rumiana Koynova
- College
of Pharmacy, The Ohio State University, 517 Parks Hall, 500 W. 12th Avenue, Columbus, Ohio 43210, United States
- Department
of Molecular Biosciences, Northwestern University, Evanston, Illinois, United States
| | - Boris Tenchov
- College
of Pharmacy, The Ohio State University, 517 Parks Hall, 500 W. 12th Avenue, Columbus, Ohio 43210, United States
- Department
of Medical Physics and Biophysics, Medical University−Sofia, Sofia, Bulgaria
| | - Robert C. MacDonald
- Department
of Molecular Biosciences, Northwestern University, Evanston, Illinois, United States
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15
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Magalhães M, Farinha D, Pedroso de Lima MC, Faneca H. Increased gene delivery efficiency and specificity of a lipid-based nanosystem incorporating a glycolipid. Int J Nanomedicine 2014; 9:4979-89. [PMID: 25368518 PMCID: PMC4216029 DOI: 10.2147/ijn.s69822] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the third most common cause of death related to cancer diseases worldwide. The current treatment options have many limitations and reduced success rates. In this regard, advances in gene therapy have shown promising results in novel therapeutic strategies. However, the success of gene therapy depends on the efficient and specific delivery of genetic material into target cells. In this regard, the main goal of this work was to develop a new lipid-based nanosystem formulation containing the lipid lactosyl-PE for specific and efficient gene delivery into HCC cells. The obtained results showed that incorporation of 15% of lactosyl-PE into liposomes induces a strong potentiation of lipoplex biological activity in HepG2 cells, not only in terms of transgene expression levels but also in terms of percentage of transfected cells. In the presence of galactose, which competes with lactosyl-PE for the binding to the asialoglycoprotein receptor (ASGP-R), a significant reduction in biological activity was observed, showing that the potentiation of transfection induced by the presence of lactosyl-PE could be due to its specific interaction with ASGP-R, which is overexpressed in HCC. In addition, it was found that the incorporation of lactosyl-PE in the nanosystems promotes an increase in their cell binding and uptake. Regarding the physicochemical properties of lipoplexes, the presence of lactosyl-PE resulted in a significant increase in DNA protection and in a substantial decrease in their mean diameter and zeta potential, conferring them suitable characteristics for in vivo application. Overall, the results obtained in this study suggest that the potentiation of the biological activity induced by the presence of lactosyl-PE is due to its specific binding to the ASGP-R, showing that this novel formulation could constitute a new gene delivery nanosystem for application in therapeutic strategies in HCC.
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Affiliation(s)
- Mariana Magalhães
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal ; Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Dina Farinha
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Maria Conceição Pedroso de Lima
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal ; Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Henrique Faneca
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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Farinha D, Pedroso de Lima MC, Faneca H. Specific and efficient gene delivery mediated by an asialofetuin-associated nanosystem. Int J Pharm 2014; 473:366-74. [DOI: 10.1016/j.ijpharm.2014.07.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 07/16/2014] [Accepted: 07/16/2014] [Indexed: 01/14/2023]
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17
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Gonçalves FAMM, Costa CSMF, Fabela IGP, Farinha D, Faneca H, Simões PN, Serra AC, Bártolo PJ, Coelho JFJ. 3D printing of new biobased unsaturated polyesters by microstereo-thermal-lithography. Biofabrication 2014; 6:035024. [DOI: 10.1088/1758-5082/6/3/035024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Passadouro M, Pedroso de Lima MC, Faneca H. MicroRNA modulation combined with sunitinib as a novel therapeutic strategy for pancreatic cancer. Int J Nanomedicine 2014; 9:3203-17. [PMID: 25061297 PMCID: PMC4086670 DOI: 10.2147/ijn.s64456] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive and mortal cancer, characterized by a set of known mutations, invasive features, and aberrant microRNA expression that have been associated with hallmark malignant properties of PDAC. The lack of effective PDAC treatment options prompted us to investigate whether microRNAs would constitute promising therapeutic targets toward the generation of a gene therapy approach with clinical significance for this disease. In this work, we show that the developed human serum albumin–1-palmitoyl-2-oleoyl-sn-glycero-3-ethylphosphocholine:cholesterol/anti-microRNA oligonucleotides (+/−) (4/1) nanosystem exhibits the ability to efficiently deliver anti-microRNA oligonucleotides targeting the overexpressed microRNAs miR-21, miR-221, miR-222, and miR-10 in PDCA cells, promoting an almost complete abolishment of microRNA expression. Silencing of these microRNAs resulted in a significant increase in the levels of their targets. Moreover, the combination of microRNA silencing, namely miR-21, with low amounts of the chemotherapeutic drug sunitinib resulted in a strong and synergistic antitumor effect, showing that this combined strategy could be of great importance for therapeutic application in PDAC.
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Affiliation(s)
- Marta Passadouro
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal ; Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Maria C Pedroso de Lima
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal ; Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Henrique Faneca
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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19
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Roy PS, Samanta A, Mukherjee M, Roy B, Mukherjee A. Designing Novel pH-Induced Chitosan–Gum Odina Complex Coacervates for Colon Targeting. Ind Eng Chem Res 2013. [DOI: 10.1021/ie401681t] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Partha Sarathi Roy
- Department
of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Amalesh Samanta
- Department
of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Manabendra Mukherjee
- Surface
Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064, India
| | - Bappaditya Roy
- Polymer
Science Unit, Indian Association for the Cultivation of Science, Kolkata 700032, India
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20
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Nakamura Y, Kim CW, Tsuchiya A, Kushio S, Nobori T, Li K, Lee EK, Zhao GX, Funamoto D, Niidome T, Mori T, Katayama Y. Branched polyethylenimine-based PKCα-responsive gene carriers. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1858-68. [PMID: 24073611 DOI: 10.1080/09205063.2013.807459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We examined in vitro performance of the branched polyethylenimine (bPEI)-based gene carriers which respond to cancer-specific activation of protein kinase Cα (PKCα) to express plasmid DNA. The carriers were synthesized straightforward by using amide bond formation between a peptide terminal carboxyl and a primary amine group of bPEI. To examine the effect of the peptide contents in the carrier, we prepared several carriers with various peptide contents. The obtained polymers form polyplexes with tighter condensation of plasmid DNA than our previous gene carriers. After internalization of the polyplexes via endocytosis, the polyplexes effectively escaped from the endosome into cytosol. Then, the polyplexes showed a clear-cut response to PKCα to release plasmid DNA for gene expression. We determined the optimum contents of the peptides in carriers as 5 mol% to achieve the clear-cut response to PKCα.
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Affiliation(s)
- Yuta Nakamura
- a Graduate School of Systems Life Sciences, Kyushu University , 744 Motooka , Nishi-ku , Fukuoka , 819-0395 , Japan
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21
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Suicide gene therapy in cancer: where do we stand now? Cancer Lett 2012; 324:160-70. [PMID: 22634584 DOI: 10.1016/j.canlet.2012.05.023] [Citation(s) in RCA: 146] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 04/11/2012] [Accepted: 05/21/2012] [Indexed: 12/21/2022]
Abstract
Suicide gene therapy is based on the introduction into tumor cells of a viral or a bacterial gene, which allows the conversion of a non-toxic compound into a lethal drug. Although suicide gene therapy has been successfully used in a large number of in vitro and in vivo studies, its application to cancer patients has not reached the desirable clinical significance. However, recent reports on pre-clinical cancer models demonstrate the huge potential of this strategy when used in combination with new therapeutic approaches. In this review, we summarize the different suicide gene systems and gene delivery vectors addressed to cancer, with particular emphasis on recently developed systems and associated bystander effects. In addition, we review the different strategies that have been used in combination with suicide gene therapy and provide some insights into the future directions of this approach, particularly towards cancer stem cell eradication.
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22
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23
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Suicide gene therapy using reducible poly (oligo-D-arginine) for the treatment of spinal cord tumors. Biomaterials 2011; 32:9766-75. [PMID: 21924768 DOI: 10.1016/j.biomaterials.2011.08.089] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 08/31/2011] [Indexed: 11/21/2022]
Abstract
Suicide gene therapy based on a combination of herpes simplex virus-thymidine kinase (HSV-tk) and ganciclovir (GCV) has obstacles to achieving a success in clinical use for the treatment of cancer due to inadequate thymidine kinase (TK) expression. The primary concern for improving anticancer efficacy of the suicide gene therapy is to develop an appropriate carrier that highly expresses TK in vivo. Despite great advances in the development of non-viral vectors, none has been used in cancer suicide gene therapy, not even in experimental challenge. Reducible poly (oligo-D-arginine) (rPOA), one of the effective non-viral carriers working in vivo, was chosen to deliver HSV-tk to spinal cord tumors which are appropriate targets for suicide gene therapy. Since the system exerts toxicity only in dividing cells, cells in the central nervous system, which are non-proliferative, are not sensitive to the toxic metabolites. In the present study, we demonstrated that the locomotor function of the model rat was maintained through the tumor suppression resulting from the tumor-selective suicide activity by co-administration of rPOA/HSV-tk and GCV. Thus, rPOA plays a crucial role in suicide gene therapy for cancer, and an rPOA/HSV-tk and GCV system could help promote in vivo trials of suicide gene therapy.
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24
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Moura MJ, Faneca H, Lima MP, Gil MH, Figueiredo MM. In Situ Forming Chitosan Hydrogels Prepared via Ionic/Covalent Co-Cross-Linking. Biomacromolecules 2011; 12:3275-84. [DOI: 10.1021/bm200731x] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. José Moura
- Departamento de Engenharia Química e Biológica, Instituto Superior de Engenharia de Coimbra, R. Pedro Nunes, 3030-199 Coimbra, Portugal
| | - H. Faneca
- Centro de Neurociências e Biologia Celular and Departamento de Ciências da Vida, Universidade de Coimbra, 3004-517 Coimbra, Portugal
| | - M. Pedroso Lima
- Centro de Neurociências e Biologia Celular and Departamento de Ciências da Vida, Universidade de Coimbra, 3004-517 Coimbra, Portugal
| | - M. Helena Gil
- Centro de Investigação em Engenharia dos Processos Químicos e Produtos da Floresta and Departamento de Engenharia Química, Universidade de Coimbra, Pólo II, Pinhal de Marrocos, 3030-290 Coimbra, Portugal
| | - M. Margarida Figueiredo
- Centro de Investigação em Engenharia dos Processos Químicos e Produtos da Floresta and Departamento de Engenharia Química, Universidade de Coimbra, Pólo II, Pinhal de Marrocos, 3030-290 Coimbra, Portugal
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25
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Zhang XX, McIntosh TJ, Grinstaff MW. Functional lipids and lipoplexes for improved gene delivery. Biochimie 2011; 94:42-58. [PMID: 21621581 DOI: 10.1016/j.biochi.2011.05.005] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Accepted: 05/06/2011] [Indexed: 12/17/2022]
Abstract
Cationic lipids are the most common non-viral vectors used in gene delivery with a few currently being investigated in clinical trials. However, like most other synthetic vectors, these vectors suffer from low transfection efficiencies. Among the various approaches to address this challenge, functional lipids (i.e., lipids responding to a stimuli) offer a myriad of opportunities for basic studies of nucleic acid-lipid interactions and for in vitro and in vivo delivery of nucleic acid for a specific biological/medical application. This manuscript reviews recent advances in pH, redox, and charge-reversal sensitive lipids.
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Affiliation(s)
- Xiao-Xiang Zhang
- Department of Chemistry, Boston University, Boston, MA 02215, USA
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26
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Lundberg D, Faneca H, Morán MDC, Pedroso De Lima MC, Miguel MDG, Lindman B. Inclusion of a single-tail amino acid-based amphiphile in a lipoplex formulation: effects on transfection efficiency and physicochemical properties. Mol Membr Biol 2011; 28:42-53. [PMID: 21219253 DOI: 10.3109/09687688.2010.508879] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Effects of the addition of a cationic amino acid-based synthetic amphiphile, arginine N-lauroyl amide dihydrochloride (ALA), to a lipid-based transfection formulation have been investigated. It is shown that the inclusion of ALA results in a substantial enhancement of the transfection capability of lipoplexes prepared with liposomes of 1-palmitoyl-2-oleoyl-sn-glycero-3-ethylphosphocholine and cholesterol, which themselves mediate highly efficient transfection. A possible explanation for the increased biological activity is that ALA adsorbed to the surface of the DNA-lipid complexes is involved in triggering internalization. However, in order to identify possible additional factors underlying the enhanced transfection efficiency, the physical properties of formulations with and without ALA were characterized using cryo-transmission electron microscopy, dynamic light scattering, and an ethidium bromide intercalation assay. ALA seems to have limited influence on the initial internal structure of the complexes and the protection of DNA, but its presence is found to decrease the average effective size of the dispersed particles; this change in size may be important in improving the biological activity. Furthermore, ALA can act to influence the transfection efficiency of the formulation by promoting the release of DNA following internalization in the transfected cells.
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Affiliation(s)
- Dan Lundberg
- Division of Chemistry, University of Coimbra, Coimbra, Portugal.
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27
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Tomiyama T, Toita R, Kang JH, Asai D, Shiosaki S, Mori T, Niidome T, Katayama Y. Tumor therapy by gene regulation system responding to cellular signal. J Control Release 2010; 148:101-105. [DOI: 10.1016/j.jconrel.2010.08.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Revised: 08/03/2010] [Accepted: 08/13/2010] [Indexed: 12/21/2022]
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28
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Li J, Li H, Zhu L, Song W, Li R, Wang D, Dou K. The adenovirus-mediated linamarase/linamarin suicide system: A potential strategy for the treatment of hepatocellular carcinoma. Cancer Lett 2010; 289:217-27. [DOI: 10.1016/j.canlet.2009.08.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 07/29/2009] [Accepted: 08/12/2009] [Indexed: 11/26/2022]
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29
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Cationic lipids: molecular structure/ transfection activity relationships and interactions with biomembranes. Top Curr Chem (Cham) 2010; 296:51-93. [PMID: 21504100 DOI: 10.1007/128_2010_67] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Abstract Synthetic cationic lipids, which form complexes (lipoplexes) with polyanionic DNA, are presently the most widely used constituents of nonviral gene carriers. A large number of cationic amphiphiles have been synthesized and tested in transfection studies. However, due to the complexity of the transfection pathway, no general schemes have emerged for correlating the cationic lipid chemistry with their transfection efficacy and the approaches for optimizing their molecular structures are still largely empirical. Here we summarize data on the relationships between transfection activity and cationic lipid molecular structure and demonstrate that the transfection activity depends in a systematic way on the lipid hydrocarbon chain structure. A number of examples, including a large series of cationic phosphatidylcholine derivatives, show that optimum transfection is displayed by lipids with chain length of approximately 14 carbon atoms and that the transfection efficiency strongly increases with increase of chain unsaturation, specifically upon replacement of saturated with monounsaturated chains.
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30
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Abstract
The biological activity of cationic liposome/DNA complexes ("lipoplexes") is strongly dependent on their ability to protect DNA and to interact with cells, including binding to the cell surface, internalization via endocytosis and cytoplasmic delivery of the DNA. In this chapter, we describe a number of methods and procedures to study these processes, based on the use of fluorescent probes.
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31
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Santos AO, da Silva LCG, Bimbo LM, de Lima MCP, Simões S, Moreira JN. Design of peptide-targeted liposomes containing nucleic acids. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2009; 1798:433-41. [PMID: 20004174 DOI: 10.1016/j.bbamem.2009.12.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Revised: 11/08/2009] [Accepted: 12/01/2009] [Indexed: 11/15/2022]
Abstract
Anticancer systemic gene silencing therapy has been so far limited by the inexistence of adequate carrier systems that ultimately provide an efficient intracellular delivery into target tumor cells. In this respect, one promising strategy involves the covalent attachment of internalizing-targeting ligands at the extremity of PEG chains grafted onto liposomes. Therefore, the present work aims at designing targeted liposomes containing nucleic acids, with small size, high encapsulation efficiency and able to be actively internalized by SCLC cells, using a hexapeptide (antagonist G) as a targeting ligand. For this purpose, the effect of the liposomal preparation method, loading material (ODN versus siRNA) and peptide-coupling procedure (direct coupling versus post-insertion) on each of the above-mentioned parameters was assessed. Post-insertion of DSPE-PEG-antagonist G conjugates into preformed liposomes herein named as stabilized lipid particles, resulted in targeted vesicles with a mean size of about 130 nm, encapsulation efficiency close to 100%, and a loading capacity of approximately 5 nmol siRNA/mumol of total lipid. In addition, the developed targeted vesicles showed increased internalization in SCLC cells, as well as in other tumor cells and HMEC-1 microvascular endothelial cells. The improved cellular association, however, did not correlate with enhanced downregulation of the target protein (Bcl-2) in SCLC cells. These results indicate that additional improvements need to be performed in the future, namely by ameliorating the access of the nucleic acids to the cytoplasm of the tumor cells following receptor-mediated endocytosis.
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Affiliation(s)
- Adriana O Santos
- Laboratory of Pharmaceutical Technology, University of Coimbra, Portugal
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32
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Huang SY, Zhang DS, Han JQ, Zhang N, Zhang SZ, Mu WL, Wei FC. Radiosensitization and Anti-tumour Effects of Cytosine Deaminase and Thymidine Kinase Fusion Suicide Gene in Human Adenoid Cystic Carcinoma Cells. J Int Med Res 2009; 37:479-90. [PMID: 19383243 DOI: 10.1177/147323000903700224] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Herpes simplex virus thymidine kinase (HSV-TK) and Escherichia coli cytosine deaminase (CD) can convert innocuous prodrugs into cytotoxic metabolites and are being investigated for use in gene therapy for cancer. Human adenoid cystic carcinoma (ACC-2) cells transduced with a CD/HSV-TK fusion gene (ACC-2/CD-TK cells) were found to be more sensitive to radiation than ACC-2 cells when exposed to 5-fluorocytosine (5-FC; 40 μg/ml) plus ganciclovir (0.1 μg/ml) for 48 h before irradiation. Analysis of radiation survival curves for cells exposed to 5-FC plus ganciclovir before irradiation showed that ACC-2 cells had a higher capacity for sublethal damage repair (Dq value) and greater cellular radiosensitivity (D0 value) than ACC-2/CD-TK cells. Colony formation rate after 2 Gy of irradiation was significantly greater for ACC-2 than for ACC-2/CD-TK cells when cells were treated with 5-FC plus ganciclovir before irradiation. This study, therefore, indicates that addition of radiation might substantially improve the therapeutic potential of CD-TK fusion gene therapy of human adenoid cystic carcinomas.
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Affiliation(s)
- S-Y Huang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Tongji University, Shanghai, China
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - D-S Zhang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - J-Q Han
- Institute of Cancer Research, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - N Zhang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - S-Z Zhang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - W-L Mu
- Medical Research Centre, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - F-C Wei
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Shandong University, Jinan, China
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Koynova R. Lipid Phases Eye View to Lipofection. Cationic Phosphatidylcholine Derivatives as Efficient DNA Carriers for Gene Delivery. Lipid Insights 2008. [DOI: 10.4137/lpi.s864] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Efficient delivery of genetic material to cells is needed for tasks of utmost importance in laboratory and clinic, such as gene transfection and gene silencing. Synthetic cationic lipids can be used as delivery vehicles for nucleic acids and are now considered the most promising non-viral gene carriers. They form complexes (lipoplexes) with the polyanionic nucleic acids. A critical obstacle for clinical application of the lipid-mediated DNA delivery (lipofection) is its unsatisfactory efficiency for many cell types. Understanding the mechanism of lipid-mediated DNA delivery is essential for their successful application, as well as for rational design and synthesis of novel cationic lipoid compounds for enhanced gene delivery. According to the current understanding, the critical factor in lipid-mediated transfection is the structural evolution of lipoplexes within the cell, upon interacting and mixing with cellular lipids. In particular, recent studies with cationic phosphatidylcholine derivatives showed that the phase evolution of lipoplex lipids upon interaction and mixing with membrane lipids appears to be decisive for transfection success: specifically, lamellar lipoplex formulations, which were readily susceptible to undergoing lamellar-nonlamellar (precisely lamellar-cubic) phase transition upon mixing with cellular lipids, were found rather consistently associated with superior transfection potency, presumably as a result of facilitated DNA release subsequent to lipoplex fusion with the cellular membranes. Further, hydrophobic moiety of the cationic phospholipids was found able to strongly modulate liposomal gene delivery into primary human umbilical artery endothelial cells; superior activity was found for cationic phosphatidylcholine derivatives with two 14-carbon atom monounsaturated hydrocarbon chains, able to induce formation of cubic phase in membranes. Thus, understanding the lipoplex structure and the phase changes upon interacting with membrane lipids is important for the rational design and successful application of cationic lipids as superior nucleotide delivery agents.
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