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Xiang K, Li Y, Cong H, Yu B, Shen Y. Peptide-based non-viral gene delivery: A comprehensive review of the advances and challenges. Int J Biol Macromol 2024; 266:131194. [PMID: 38554914 DOI: 10.1016/j.ijbiomac.2024.131194] [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: 12/11/2023] [Revised: 03/14/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Gene therapy is the most effective treatment option for diseases, but its effectiveness is affected by the choice and design of gene carriers. The genes themselves have to pass through multiple barriers in order to enter the cell and therefore require additional vectors to carry them inside the cell. In gene therapy, peptides have unique properties and potential as gene carriers, which can effectively deliver genes into specific cells or tissues, protect genes from degradation, improve gene transfection efficiency, and enhance gene targeting and biological responsiveness. This paper reviews the research progress of peptides and their derivatives in the field of gene delivery recently, describes the obstacles encountered by foreign materials to enter the interior of the cell, and introduces the following classes of functional peptides that can carry materials into the interior of the cell, and assist in transmembrane translocation of carriers, thus breaking through endosomal traps to enable successful entry of genetic materials into the nucleus of the cell. The paper also discusses the combined application of peptide vectors with other vectors to enhance its transfection ability, explores current challenges encountered by peptide vectors, and looks forward to future developments in the field.
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Affiliation(s)
- Kai Xiang
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Yanan Li
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Hailin Cong
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China; School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China.
| | - Bing Yu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China.
| | - Youqing Shen
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Center for Bio nanoengineering, and Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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2
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Zou R, Hao Y, Qi C, Peng X, Huang Z, Li D, Wang Y. Trimethyl chitosan-cysteine-based nanoparticles as an effective delivery system for portulacerebroside A in the management of hepatocellular carcinoma cells in vitro and in vivo. J Drug Target 2024:1-15. [PMID: 38625591 DOI: 10.1080/1061186x.2024.2344495] [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: 12/14/2023] [Accepted: 04/11/2024] [Indexed: 04/17/2024]
Abstract
Portulacerebroside A (PCA), a cerebroside compound extracted from Portulaca oleracea L., has been shown to suppress hepatocellular carcinoma (HCC) cells. This study aims to investigate the effectiveness of trimethyl chitosan-cysteine (TMC-Cys) nanocarrier in delivering PCA for HCC management and to elucidate the molecular mechanisms behind PCA's function. TMC-Cys nanocarriers notably augmented PCA's function, diminishing the proliferation, migration, and invasiveness of HCC cells in vitro, reducing hepatocellular tumorigenesis in immunocompetent mice, and impeding metastasis of xenograft tumours in nude mice. Comprehensive bioinformatics analyses, incorporating Super-PRED systems alongside pathway enrichment analysis, pinpointed toll-like receptor 4 (TLR4) and epidermal growth factor receptor (EGFR) as two promising targets of PCA, enriched in immune checkpoint pathway. PCA/nanocarrier (PCA) reduced levels of TLR4 and EGFR and their downstream proteins, including programmed cell death ligand 1, thereby increasing populations and activity of T cells co-cultured with HCC cells in vitro or in primary HCC tumours in mice. However, these effects were counteracted by additional artificial activation of TLR4 and EGFR. In conclusion, this study provides novel evidence of PCA's function in immunomodulation in addition to its direct tumour suppressive effect. TMC-Cys nanocarriers significantly enhance PCA efficacy, indicating promising application as a drug delivery system.
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Affiliation(s)
- Rui Zou
- Hepatobiliary Pancreatic Surgery Division 1, Hainan Cancer Hospital, Haikou, P.R. China
| | - Yunhe Hao
- Hepatobiliary Pancreatic Surgery Division 1, Hainan Cancer Hospital, Haikou, P.R. China
| | - Chunchun Qi
- Medical College of Nankai University, Tianjin, P.R. China
| | - Xu Peng
- Hepatobiliary Pancreatic Surgery Division 1, Hainan Cancer Hospital, Haikou, P.R. China
| | - Zepeng Huang
- Hepatobiliary Pancreatic Surgery Division 1, Hainan Cancer Hospital, Haikou, P.R. China
| | - Duo Li
- Hepatobiliary Pancreatic Surgery Division 1, Hainan Cancer Hospital, Haikou, P.R. China
| | - Yiyao Wang
- Department of Integrated Traditional Chinese and Western Medicine, Hainan Cancer Hospital, Haikou, P.R. China
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Cheng Q, Kang Y, Yao B, Dong J, Zhu Y, He Y, Ji X. Genetically Engineered-Cell-Membrane Nanovesicles for Cancer Immunotherapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302131. [PMID: 37409429 PMCID: PMC10502869 DOI: 10.1002/advs.202302131] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/13/2023] [Indexed: 07/07/2023]
Abstract
The advent of immunotherapy has marked a new era in cancer treatment, offering significant clinical benefits. Cell membrane as drug delivery materials has played a crucial role in enhancing cancer therapy because of their inherent biocompatibility and negligible immunogenicity. Different cell membranes are prepared into cell membrane nanovesicles (CMNs), but CMNs have limitations such as inefficient targeting ability, low efficacy, and unpredictable side effects. Genetic engineering has deepened the critical role of CMNs in cancer immunotherapy, enabling genetically engineered-CMN (GCMN)-based therapeutics. To date, CMNs that are surface modified by various functional proteins have been developed through genetic engineering. Herein, a brief overview of surface engineering strategies for CMNs and the features of various membrane sources is discussed, followed by a description of GCMN preparation methods. The application of GCMNs in cancer immunotherapy directed at different immune targets is addressed as are the challenges and prospects of GCMNs in clinical translation.
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Affiliation(s)
| | - Yong Kang
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Bin Yao
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Jinrui Dong
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Yalan Zhu
- Jinhua Municipal Central HospitalJinhua321000China
| | - Yiling He
- Jinhua Municipal Central HospitalJinhua321000China
| | - Xiaoyuan Ji
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
- Medical CollegeLinyi UniversityLinyi276000China
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4
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Vaidya S, Mohod A, Eedara AC, Andugulapati SB, Pabbaraja S. Synthesis and Characterization of a New Cationic Lipid: Efficient siRNA Delivery and Anticancer Activity of Survivin-siRNA Lipoplexes for the Treatment of Lung and Breast Cancers. ChemMedChem 2023; 18:e202300097. [PMID: 37306531 DOI: 10.1002/cmdc.202300097] [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: 02/16/2023] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/13/2023]
Abstract
Survivin has been shown to be widely expressed in most tumor cells, including lung and breast cancers. Due to limited siRNA delivery, it is more challenging to target survivin using knockdown-based techniques. Designing and developing new, bifunctional chemical molecules with both selective anti-proliferative activity and effective siRNA transfection capabilities by targeting a particular gene is important to treat aggressive tumors like triple-negative breast tumors (TNBC). The cationic lipids deliver small interfering RNA (siRNA) and also display inherent anti-cancer activities; therefore, cationic lipid therapies have become very popular for treating malignant cancers. In the current study, we attempted to synthesize a series of acid-containing cationic lipids, anthranilic acid-containing mef lipids, and indoleacetic acid-containing etodo lipids etc. Further, we elucidated their bi-functional activity for their anticancer activity and survivin siRNA-mediated anti-cancer activity. Our results showed that lipoplexes with siRNA-Etodo: Dotap (ED) and siRNA-Mef: Dotap (MD) exhibited homogeneous particle size and positive zeta potential. Further, biological investigations resulted in enhanced survivin siRNA delivery with high stability, improved transfection efficiency, and anti-cancer activity. Additionally, our findings showed that survivin siRNA lipoplexes (ED and MD) in A549 cells and 4T1 cells exhibited stronger survivin knockdown, enhanced apoptosis, and G1 or G2/M phase arrest in both cell types. In vivo results revealed that treatment with survivin complexed lipoplexes significantly reduced tumor growth and tumor weight compared to control. Thus, our novel quaternary amine-based liposome formulations are predicted to open up new possibilities in the development of a simple and widely utilized platform for siRNA delivery and anti-cancer activities.
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Affiliation(s)
- Sandeep Vaidya
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Annie Mohod
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, India
| | - Abhisheik Chowdary Eedara
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, India
| | - Sai Balaji Andugulapati
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, India
| | - Srihari Pabbaraja
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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Vaidya S, Jeengar MK, Wadaan MA, Mahboob S, Kumar P, Reece LM, Bathula SR, Dutta M. Design and In Vitro Evaluation of Novel Cationic Lipids for siRNA Delivery in Breast Cancer Cell Lines. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2022; 2022:9231641. [PMID: 35707479 PMCID: PMC9192290 DOI: 10.1155/2022/9231641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/09/2022] [Indexed: 12/24/2022]
Abstract
Breast cancer is the most common cause of cancer mortality in Western nations, with a terrible prognosis. Many studies show that siRNA plays a role in the development of tumors by acting as a tumor suppressor and apoptosis inhibitor or both. siRNAs may be used as diagnostic and prognostic biomarkers in breast cancer. Antisurvivin siRNA was chosen as a therapeutic target in breast cancer treatment because it directly targets survivin, an inhibitor of apoptosis protein, that causes cell death. However, siRNA-based treatment has significant limitations, including a lack of tissue selectivity, a lack of effective delivery mechanisms, low cellular absorption, and the possibility of systemic toxicity. To address some of these issues, we provide a siRNA delivery method based on cationic lipids. In the recent past, cationic liposomes have displayed that they offer a remarkable perspective in proficient siRNA delivery. The presence of a positive charge plays a vital role in firm extracellular siRNA binding along with active intracellular siRNA separation and low biological adversities. Consequently, the methods for developing innovative cationic lipids through rendering and utilization of appropriate positive charges would certainly be helpful for benign and effective siRNA delivery. In the current study, an effort was made to synthesize a 3,4-dimethoxyaniline lipid (DMA) to improve the effectiveness and protection of successful siRNA delivery. DMA cationic lipid successfully delivered survivin siRNA that reduced the survivin mRNA expression, indicating the possibility of utilizing siRNA therapeutics for breast cancer. It is expected that this innovative quaternary amine-based liposome can open up new avenues in the process of developing an easy and extensively used platform for siRNA delivery. Cationic lipoplexes, a potential carrier system for siRNA-based therapies in the treatment of breast cancer, were proven by our data.
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Affiliation(s)
- Sandeep Vaidya
- CSIR-Indian Institute of Chemical Technology (IICT), Centre for Academy of Scientific and Innovative Research (AcSIR), Hyderabad 500007, India
| | - Manish Kumar Jeengar
- Department of Pharmacology, School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Sciences Campus, AIMS Ponekkara, Kochi 682041, Kerala, India
| | - Mohammad Ahmad Wadaan
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Shahid Mahboob
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Pankaj Kumar
- Integrated Regional Office, Ministry of Environment, Forest & Climate Change (MoEFCC), Government of India, Saifabad, Hyderabad 500004, Telangana, India
| | - Lisa M. Reece
- Reece Life Science Consulting Service, 819 N Amburn Rd, Galveston, TX, USA
| | - Surender Reddy Bathula
- CSIR-Indian Institute of Chemical Technology (IICT), Centre for Academy of Scientific and Innovative Research (AcSIR), Hyderabad 500007, India
| | - Mycal Dutta
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
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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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7
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Linsha Mali A, Priya SS, Rekha MR. Hydrophobic and hydrophilic modifications of polyethylenimine towards gene delivery applications. J Appl Polym Sci 2021. [DOI: 10.1002/app.51323] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. Linsha Mali
- Division of Biosurface Technology, Biomedical Technology Wing Sree Chitra Tirunal Institute for Medical Sciences and Technology Thiruvananthapuram India
| | - S. S. Priya
- Division of Biosurface Technology, Biomedical Technology Wing Sree Chitra Tirunal Institute for Medical Sciences and Technology Thiruvananthapuram India
| | - M. R. Rekha
- Division of Biosurface Technology, Biomedical Technology Wing Sree Chitra Tirunal Institute for Medical Sciences and Technology Thiruvananthapuram India
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8
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Abstract
Bacterial transformation and gene transfection can be understood as being the results of introducing specific genetic material into cells, resulting in gene expression, and adding a new genetic trait to the host cell. Many studies have been carried out to investigate different types of lipids and cationic polymers as promising nonviral vectors for DNA transfer. The present study aimed to carry out a systematic review on the use of biopolymeric materials as nonviral vectors. The methodology was carried out based on searches of scientific articles and applications for patents published or deposited from 2006 to 2020 in different databases for patents (EPO, USPTO, and INPI) and articles (Scopus, Web of Science, and Scielo). The results showed that there are some deposits of patents regarding the use of chitosan as a gene carrier. The 16 analyzed articles allowed us to infer that the use of biopolymers as nonviral vectors is limited due to the low diversity of biopolymers used for these purposes. It was also observed that the use of different materials as nonviral vectors is based on chemical structure modifications of the material, mainly by the addition of cationic groups. Thus, the use of biopolymers as nonviral vectors is still limited to only a few polysaccharide types, emphasizing the need for further studies involving the use of different biopolymers in processes of gene transfer.
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Hosseinpour S, Xu C, Walsh LJ. Impact of photobiomodulation using four diode laser wavelengths of on cationic liposome gene transfection into pre-osteoblast cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 215:112108. [PMID: 33418241 DOI: 10.1016/j.jphotobiol.2020.112108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 11/21/2020] [Accepted: 12/18/2020] [Indexed: 11/16/2022]
Abstract
Gene therapy can be an effective treatment modality for some severe genetic diseases. Despite efforts to improve their performance, non-viral gene delivery methods remain inefficient and costly. As an alternative to viral vectors, cationic liposomes have a good safety profile and low immunogenicity, but relatively low transfection efficiency. They may also be toxic to cells at high concentrations. Given these challenges, the present study explored the impact of photobiomodulation (PBM) on cationic liposome plasmid DNA transfection in terms of its efficiency and toxicity, using Lipofectamine 2000 to carry green fluorescent protein (GFP) encoding plasmid DNA, with the pre-osteoblast MC3T3-E1 cell line as the target. Cultures were irradiated using diode lasers (445, 685, 810, or 970 nm) at 200 mW using pulsed mode (50 Hz), with a power density of 104.64 mW/cm2, and irradiance from 6 to 18 joules. To determine transfection efficiency, expression of GFP was assessed using confocal laser scanning microscopy and flow cytometry. Cell viability was evaluated using the MTT assay. PBM using 810 nm and 970 nm lasers significantly enhanced transfection efficiency for GFP, indicating more efficient uptake of plasmid DNA. Conversely, laser irradiation at 445 nm and 685 nm wavelengths reduced the GFP transfection efficiency. Treatment using 685, 810, and 970 nm lasers at 12 J maintained cell viability and prevented toxicity of cationic liposomes. Overall, these findings support the concept that PBM using near infrared laser wavelengths can enhance transfection efficiency and support cell viability when cationic liposomes are used as the vector in gene therapy.
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Affiliation(s)
- Sepanta Hosseinpour
- School of Dentistry, The University of Queensland, Herston, QLD, 4006, Australia.
| | - Chun Xu
- School of Dentistry, The University of Queensland, Herston, QLD, 4006, Australia.
| | - Laurence J Walsh
- School of Dentistry, The University of Queensland, Herston, QLD, 4006, Australia.
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10
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Abstract
The assessment of the efficient binding between a nucleic acid and its associated nanoparticle is crucial for gene delivery. Emerging from the extensive search for versatile gene carriers, are complexes formed between nucleic acids and nonviral nanocarriers that promise to be viable alternatives to the predominantly viral-based gene delivery vehicles. However, much is still to be known about the exact structure and physico-chemical properties of such nanocomplexes. This chapter will concentrate on cationic lipid, polymer, and functionalized metal nanoparticles and their interaction with nucleic acids by direct conjugation or electrostatic interaction. Methods commonly employed to evaluate the nature and extent of nucleic acid interactions with cationic nanocarriers, such a nucleic acid binding, nuclease protection, and dye displacement assays will be described. In addition, the ultrastructural morphology, size, and zeta potential of these nanocomplexes, which are crucial for their cellular uptake and intracellular trafficking, will be assessed using electron microscopy, fluorescent detection, and nanoparticle tracking analysis (NTA). These assays have the ability to visualize and quantify the interaction and can also be used to complement each other, in addition to providing confirmation of the formation of the relevant nanocomplexes.
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Egorova AA, Shtykalova SV, Maretina MA, Selyutin AV, Shved NY, Krylova NV, Ilina AV, Pyankov IA, Freund SA, Selkov SA, Baranov VS, Kiselev AV. Cys-Flanked Cationic Peptides For Cell Delivery of the Herpes Simplex Virus Thymidine Kinase Gene for Suicide Gene Therapy of Uterine Leiomyoma. Mol Biol 2020. [DOI: 10.1134/s0026893320030061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Huang J, Ma W, Sun H, Wang H, He X, Cheng H, Huang M, Lei Y, Wang K. Self-Assembled DNA Nanostructures-Based Nanocarriers Enabled Functional Nucleic Acids Delivery. ACS APPLIED BIO MATERIALS 2020; 3:2779-2795. [DOI: 10.1021/acsabm.9b01197] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jin Huang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- College of Biology, Hunan University, Changsha 410082, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Wenjie Ma
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- College of Biology, Hunan University, Changsha 410082, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Huanhuan Sun
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- College of Biology, Hunan University, Changsha 410082, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Huizhen Wang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- College of Biology, Hunan University, Changsha 410082, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Xiaoxiao He
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- College of Biology, Hunan University, Changsha 410082, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Hong Cheng
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- College of Biology, Hunan University, Changsha 410082, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Mingmin Huang
- College of Biology, Hunan University, Changsha 410082, China
| | - Yanli Lei
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- College of Biology, Hunan University, Changsha 410082, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Kemin Wang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- College of Biology, Hunan University, Changsha 410082, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Hunan University, Changsha 410082, China
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13
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Cheang TY, Lei YY, Zhang ZQ, Zhou HY, Ye RY, Lin Y, Wang S. Graphene oxide-hydroxyapatite nanocomposites effectively deliver HSV-TK suicide gene to inhibit human breast cancer growth. J Biomater Appl 2019; 33:216-226. [PMID: 30096997 DOI: 10.1177/0885328218788242] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Gene therapy with herpes simplex virus thymidine kinase gene (HSV-TK), which is also known as "suicide" gene therapy, is effective in various tumor models. The lack of a safe and efficient gene delivery system has become a major obstacle to "suicide" gene therapy. In this study, the cytotoxicity and transfection efficiency of graphene oxide-hydroxyapatite (GO-Hap) were analyzed by MTS and flow cytometry, respectively. A series of assays were performed to evaluate the effects of GO-HAp/p-HRE/ERE-Sur-TK combined with ganciclovir treatment on growth of human breast normal and cancer cells. The results showed that GO-HAp nanocomposites effectively transfected cells with minimum toxicity. GO-HAp/p-HRE/ERE-Sur-TK combined with ganciclovir treatment inhibited the proliferation and induced cell apoptosis in cancer cells, while the cytotoxic effects are tolerable in normal breast cells. We conclude that the GO-HAp nanocomposites have significant potential as a gene delivery vector for cancer therapy.
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Affiliation(s)
- Tuck-Yun Cheang
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yi-Yan Lei
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhan-Qiang Zhang
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Hong-Yan Zhou
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Run-Yi Ye
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ying Lin
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shenming Wang
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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14
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Understanding the molecular biology of intervertebral disc degeneration and potential gene therapy strategies for regeneration: a review. Gene Ther 2018; 25:67-82. [DOI: 10.1038/s41434-018-0004-0] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 11/30/2017] [Accepted: 01/03/2018] [Indexed: 12/13/2022]
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15
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Li Z, Wang X, Tian Z, Chen Z. Fluorescent protein nanovessels packing DNA into a nucleosome-like gene carrier. NEW J CHEM 2018. [DOI: 10.1039/c7nj04750a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By forming a nucleosome-like structure, BBNCs can function as DNA carriers.
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Affiliation(s)
- Zhenhua Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry, and International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Xiaoliang Wang
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry, and International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Zhuo Tian
- Jilin Agricultural University Information Teaching and Management Center
- Changchun
- P. R. China
| | - Zhijun Chen
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry, and International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Jilin University
- Changchun
- P. R. China
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16
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Abstract
Human immunodeficiency virus (HIV) is a neurotropic virus that enters the central nervous system (CNS) early in the course of infection. Although highly active antiretroviral therapy (HAART) has resulted in remarkable decline in the morbidity and mortality in AIDS patients, controlling HIV infections still remains a global health priority. HIV access to the CNS serves as the natural viral preserve because most antiretroviral (ARV) drugs possess inadequate or zero delivery across the brain barriers. The structure of the blood-brain barrier (BBB), the presence of efflux pumps, and the expression of metabolic enzymes pose hurdles for ARV drug-brain entry. Thus, development of target-specific, effective, safe, and controllable drug delivery approach is an important health priority for global elimination of AIDS progression. Nanoformulations can circumvent the BBB to improve CNS-directed drug delivery by affecting such pumps and enzymes. Alternatively, they can be optimized to affect their size, shape, and protein and lipid coatings to facilitate drug uptake, release, and ingress across the barrier. Improved drug delivery to the CNS would affect pharmacokinetic and drug biodistribution properties. This review focuses on how nanotechnology can serve to improve the delivery of antiretroviral medicines, termed NanoART, across the BBB and affect the biodistribution and clinical benefit for NeuroAIDS.
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17
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Yang Z, Sun Y, Xian L, Xun Z, Yu J, Yang T, Zhao X, Cai C, Wang D, Ding P. Disulfide‐bond‐containing agamatine‐cystaminebisacrylamide polymer demonstrates better transfection efficiency and lower cytotoxicity than polyethylenimine in NIH/3T3 cells. J Cell Biochem 2017; 119:1767-1779. [DOI: 10.1002/jcb.26338] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 08/08/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Zhen Yang
- School of PharmacyShenyang Pharmaceutical UniversityShenyangChina
| | - Yanping Sun
- School of PharmacyShenyang Pharmaceutical UniversityShenyangChina
| | - Lei Xian
- School of PharmacyShenyang Pharmaceutical UniversityShenyangChina
| | - Zhe Xun
- Institute of Metabolic Disease Research and Drug DevelopmentChina Medical UniversityShenyangChina
| | - Jiankun Yu
- Department of Ion Channel PharmacologySchool of PharmacyChina Medical UniversityShenyangChina
| | - Tianzhi Yang
- Department of Basic Pharmaceutical SciencesSchool of PharmacyHusson UniversityBangorMaine
| | - Xiaoyun Zhao
- Department of Microbiology and Cell BiologySchool of Life Science and BiopharmaceuticsShenyang Pharmaceutical UniversityShenyangChina
| | - Cuifang Cai
- School of PharmacyShenyang Pharmaceutical UniversityShenyangChina
| | - Dongkai Wang
- School of PharmacyShenyang Pharmaceutical UniversityShenyangChina
| | - Pingtian Ding
- School of PharmacyShenyang Pharmaceutical UniversityShenyangChina
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18
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Ochakovski GA, Bartz-Schmidt KU, Fischer MD. Gentherapie zur Behandlung von Netzhauterkrankungen. MED GENET-BERLIN 2017. [DOI: 10.1007/s11825-017-0133-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Zusammenfassung
Eine Reihe von Netzhauterkrankungen hat bekannte genetische Ursachen, die prinzipiell durch Gentherapie behandelt werden können. Diese Übersicht stellt das Prinzip und die Besonderheiten der okulären Gentherapie dar, fasst den aktuellen Stand der Forschung bis hin zur klinischen Anwendung zusammen und gibt einen Ausblick auf aktuelle Entwicklungen der Gentherapie am Auge.
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Affiliation(s)
- G. Alex Ochakovski
- Aff1 0000 0001 0196 8249 grid.411544.1 Universitäts-Augenklinik Universitätsklinikum Tübingen Tübingen Deutschland
- Aff2 0000 0001 0196 8249 grid.411544.1 Forschungsinstitut für Augenheilkunde, Department für Augenheilkunde Universitätsklinikum Tübingen Elfriede-Aulhorn-Str. 5–7 72076 Tübingen Deutschland
| | - Karl Ulrich Bartz-Schmidt
- Aff1 0000 0001 0196 8249 grid.411544.1 Universitäts-Augenklinik Universitätsklinikum Tübingen Tübingen Deutschland
| | - M. Dominik Fischer
- Aff1 0000 0001 0196 8249 grid.411544.1 Universitäts-Augenklinik Universitätsklinikum Tübingen Tübingen Deutschland
- Aff2 0000 0001 0196 8249 grid.411544.1 Forschungsinstitut für Augenheilkunde, Department für Augenheilkunde Universitätsklinikum Tübingen Elfriede-Aulhorn-Str. 5–7 72076 Tübingen Deutschland
- Aff3 0000 0004 1936 8948 grid.4991.5 Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences University of Oxford Oxford Großbritannien
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19
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Redondo JA, Martínez-Campos E, Navarro R, Pérez-Perrino M, Reinecke H, Gallardo A, Corrales G, Fernández-Mayoralas A, Elvira C. Hydroxyl versus permethylated glycopolymers as gene carriers. Eur J Pharm Biopharm 2017; 117:68-76. [PMID: 28385616 DOI: 10.1016/j.ejpb.2017.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 02/17/2017] [Accepted: 04/01/2017] [Indexed: 10/19/2022]
Abstract
The main parameters that contribute to non-viral gene delivery are chemical structure and charge distribution. Indeed, saccharide units have been reported to have specific interactions with proteins located in the outer leaflet of the plasma cell membrane that facilitate the cellular internalization of plasmid-DNA vector complexes. In this work, glycopolymers based on statistical copolymers were synthesized through radical copolymerization of a cationic unit, N-ethyl pyrrolidine methacrylamide (EPA), with two styrenic monomers derived from the hydroxylated and permethylated forms of α-glucose. These copolymers were evaluated as possible non-viral gene carriers, and their ability to complex DNA was evaluated. The transfection efficiency and cytocompatibility of the polyplexes, in both fibroblastic and tumoral murine cell lines, was evaluated. Systems derived from α-glucose (GLCSt), over a monomer concentration range of 5-70mol%, exhibited high toxicity and low transfection efficiency, and were not able to significantly improve on results obtained from positive poly-EPA (PEPA) and polyethyleneimine (PEI) controls. However, systems derived from the permethylated form of α-glucose (MGLCSt), formed stable complexes with DNA or polyplexes, which showed improved transfection efficiency and cytocompatibility in comparison to positive controls. The high transfection efficiency can be clearly attributed to their cytocompatibility, which was notably found to be different for Swiss fibroblasts and B16 melanoma cells, high for Swiss and low for B16. As such, we present permethylated MCLCSt copolymers as good candidates for the possible development of therapies against melanoma.
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Affiliation(s)
- Juan Alfonso Redondo
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Enrique Martínez-Campos
- Institute of Biofunctional Studies (IEB), Tissue Engineering Group, (UCM), Associated Unit to the Institute of Polymer Science and Technology (CSIC), Paseo de Juan XXIII 1, 28040 Madrid, Spain
| | - Rodrigo Navarro
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Mónica Pérez-Perrino
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Helmut Reinecke
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Alberto Gallardo
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Guillermo Corrales
- Institute of Organic Chemistry, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | | | - Carlos Elvira
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain.
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20
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Watabe N, Joo Kim C, Kimura S. Fusion and fission of molecular assemblies of amphiphilic polypeptides generating small vesicles from nanotubes. Pept Sci (Hoboken) 2017; 108. [DOI: 10.1002/bip.22903] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 06/08/2016] [Accepted: 06/25/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Naoki Watabe
- Department of Material Chemistry, Graduate School of EngineeringKyoto University, Kyoto‐Daigaku‐KatsuraNishikyo‐Ku Kyoto615‐8510 Japan
| | - Cheol Joo Kim
- Department of Material Chemistry, Graduate School of EngineeringKyoto University, Kyoto‐Daigaku‐KatsuraNishikyo‐Ku Kyoto615‐8510 Japan
| | - Shunsaku Kimura
- Department of Material Chemistry, Graduate School of EngineeringKyoto University, Kyoto‐Daigaku‐KatsuraNishikyo‐Ku Kyoto615‐8510 Japan
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21
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Scarabel L, Perrone F, Garziera M, Farra R, Grassi M, Musiani F, Russo Spena C, Salis B, De Stefano L, Toffoli G, Rizzolio F, Tonon F, Abrami M, Chiarappa G, Pozzato G, Forte G, Grassi G, Dapas B. Strategies to optimize siRNA delivery to hepatocellular carcinoma cells. Expert Opin Drug Deliv 2017; 14:797-810. [DOI: 10.1080/17425247.2017.1292247] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Lucia Scarabel
- Experimental and Clinical Pharmacology Unit, C.R.O. National Cancer Institute, Aviano, Italy
| | - Francesca Perrone
- Department of Life Sciences, Cattinara University Hospital, University of Trieste, Trieste, Italy
| | - Marica Garziera
- Experimental and Clinical Pharmacology Unit, C.R.O. National Cancer Institute, Aviano, Italy
| | - Rossella Farra
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Mario Grassi
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Francesco Musiani
- Laboratory of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Concetta Russo Spena
- Experimental and Clinical Pharmacology Unit, C.R.O. National Cancer Institute, Aviano, Italy
| | - Barbara Salis
- Experimental and Clinical Pharmacology Unit, C.R.O. National Cancer Institute, Aviano, Italy
| | - Lucia De Stefano
- Experimental and Clinical Pharmacology Unit, C.R.O. National Cancer Institute, Aviano, Italy
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Unit, C.R.O. National Cancer Institute, Aviano, Italy
| | - Flavio Rizzolio
- Experimental and Clinical Pharmacology Unit, C.R.O. National Cancer Institute, Aviano, Italy
| | - Federica Tonon
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Michela Abrami
- Department of Life Sciences, Cattinara University Hospital, University of Trieste, Trieste, Italy
| | - Gianluca Chiarappa
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Gabriele Pozzato
- Department of ‘Scienze Mediche, Chirurgiche e della Salute’, Cattinara University Hospital, University of Trieste, Trieste, Italy
| | - Giancarlo Forte
- Center for Translational Medicine, International Clinical Research Center, St. Anne’s University Hospital, Brno, Czech Republic
| | - Gabriele Grassi
- Department of Life Sciences, Cattinara University Hospital, University of Trieste, Trieste, Italy
- Department of ‘Scienze Mediche, Chirurgiche e della Salute’, Cattinara University Hospital, University of Trieste, Trieste, Italy
| | - Barbara Dapas
- Department of Life Sciences, Cattinara University Hospital, University of Trieste, Trieste, Italy
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22
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Engineering approaches in siRNA delivery. Int J Pharm 2017; 525:343-358. [PMID: 28213276 DOI: 10.1016/j.ijpharm.2017.02.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/10/2017] [Accepted: 02/11/2017] [Indexed: 12/18/2022]
Abstract
siRNAs are very potent drug molecules, able to silence genes involved in pathologies development. siRNAs have virtually an unlimited therapeutic potential, particularly for the treatment of inflammatory diseases. However, their use in clinical practice is limited because of their unfavorable properties to interact and not to degrade in physiological environments. In particular they are large macromolecules, negatively charged, which undergo rapid degradation by plasmatic enzymes, are subject to fast renal clearance/hepatic sequestration, and can hardly cross cellular membranes. These aspects seriously impair siRNAs as therapeutics. As in all the other fields of science, siRNAs management can be advantaged by physical-mathematical descriptions (modeling) in order to clarify the involved phenomena from the preparative step of dosage systems to the description of drug-body interactions, which allows improving the design of delivery systems/processes/therapies. This review analyzes a few mathematical modeling approaches currently adopted to describe the siRNAs delivery, the main procedures in siRNAs vectors' production processes and siRNAs vectors' release from hydrogels, and the modeling of pharmacokinetics of siRNAs vectors. Furthermore, the use of physical models to study the siRNAs vectors' fate in blood stream and in the tissues is presented. The general view depicts a framework maybe not yet usable in therapeutics, but with promising possibilities for forthcoming applications.
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23
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Li Z, Ding H, Yan F, Li H, Chen Z. Transformable protein–gold hybrid materials serve as supramolecular vehicles for gene delivery. RSC Adv 2017. [DOI: 10.1039/c7ra10141d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PGHN–DNA can be a good model to study DNA–carrier interaction as well as a new carrier for gene delivery research.
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Affiliation(s)
- Zhenhua Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Jilin University
- Changchun 130012
| | - Han Ding
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Jilin University
- Changchun 130012
| | - Fei Yan
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Jilin University
- Changchun 130012
| | - Hongwei Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Jilin University
- Changchun 130012
| | - Zhijun Chen
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Jilin University
- Changchun 130012
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24
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Ingato D, Lee JU, Sim SJ, Kwon YJ. Good things come in small packages: Overcoming challenges to harness extracellular vesicles for therapeutic delivery. J Control Release 2016; 241:174-185. [DOI: 10.1016/j.jconrel.2016.09.016] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/18/2016] [Accepted: 09/19/2016] [Indexed: 12/15/2022]
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25
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Lü JM, Liang Z, Wang X, Gu J, Yao Q, Chen C. New polymer of lactic-co-glycolic acid-modified polyethylenimine for nucleic acid delivery. Nanomedicine (Lond) 2016; 11:1971-91. [PMID: 27456396 DOI: 10.2217/nnm-2016-0128] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To develop an improved delivery system for nucleic acids. MATERIALS & METHODS We designed, synthesized and characterized a new polymer of lactic-co-glycolic acid-modified polyethylenimine (LGA-PEI). Functions of LGA-PEI polymer were determined. RESULTS The new LGA-PEI polymer spontaneously formed nanoparticles (NPs) with DNA or RNA, and showed higher DNA or RNA loading efficiency, higher or comparable transfection efficacy, and lower cytotoxicity in several cell types including PANC-1, Jurkat and HEK293 cells, when compared with lipofectamine 2000, branched or linear PEI (25 kDa). In nude mouse models, LGA-PEI showed higher delivery efficiency of plasmid DNA or miRNA mimic into pancreatic and ovarian xenograft tumors. LGA-PEI/DNA NPs showed much lower toxicity than control PEI NPs in mouse models. CONCLUSION The new LGA-PEI polymer is a safer and more effective system to deliver DNA or RNA than PEI.
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Affiliation(s)
- Jian-Ming Lü
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA
| | - Zhengdong Liang
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA
| | - Xiaoxiao Wang
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA
| | - Jianhua Gu
- AFM/SEM Core Facility, The Methodist Hospital Research Institute, 6670 Bertner Avenue, Houston, TX 77030, USA
| | - Qizhi Yao
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA.,Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical Center, Houston, TX 77030, USA
| | - Changyi Chen
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA
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26
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Haider M, Ghandehari H. Influence of Poly(Amino Acid) Composition on the Complexation of Plasmid DNA and Transfection Efficiency. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911503018002001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Random copolymers of poly[(Lys, Ala) 1: 1], poly[(Lys, Ala) 2: 1], poly[(Lys, Ala) 3: 1], poly[(Lys, Ser) 3: 1] and poly[(Arg, Ser) 3: 1] (ratios designate the feed comonomer composition), were complexed with plasmid DNA pRL CMV luc at different weight per weight DNA: polymer ratios. The physicochemical properties of the complexes were evaluated by gel retardation assay, Zeta potential measurements and photon correlation spectroscopy. The extent of DNA protection against nucleases was determined by a nuclease assay. Cell viability and transfection efficiency of the DNA/polymer complexes were determined by MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-4-sulfophenyl)-2-H -tetrazolium) and luciferase assays, respectively. Regardless of the amino acid feed composition, neutral complexes were formed between 2: 1 and 1: 1 DNA: polymer ratios. The particle sizes of the complexes were in the range of 100-300 nm with complexes with more DNA gave a larger particle size than those with a higher proportion of polymer. Compared to other copolymers, lower amounts of poly[(Lys, Ser) 3: 1] were required to protect the DNA against degradation. The presence of arginine residues increased the transfection efficiency of the complexes by 2-3 orders of magnitude. Results suggest that the amino acid composition of the copolymers has an impact on protection of DNA against degradation by the nucleases, cytotoxicity and transfection efficiency.
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Affiliation(s)
- Mohamed Haider
- Department of Pharmaceutical Sciences University of Maryland School of Pharmacy 20 North Pine Street, Baltimore, Maryland 21201-1180, USA
| | - Hamidreza Ghandehari
- Department of Pharmaceutical Sciences University of Maryland School of Pharmacy 20 North Pine Street, Baltimore, Maryland 21201-1180, USA
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27
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Li Y, Hei M, Xu Y, Qian X, Zhu W. Ammonium salt modified mesoporous silica nanoparticles for dual intracellular-responsive gene delivery. Int J Pharm 2016; 511:689-702. [PMID: 27426108 DOI: 10.1016/j.ijpharm.2016.07.029] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 06/30/2016] [Accepted: 07/14/2016] [Indexed: 01/12/2023]
Abstract
Effective gene delivery system plays an importmant role in the gene therapy. Mesoporous silica nanoparticle (MSN) has become one potential gene delivery vector because of its high stability, good biodegradability and low cytotoxicity. Herein, MSN-based dual intracellular responsive gene delivery system CMSN-A was designed and fabricated. Short chain ammonium group, which is modified with disulfide bond and amide bond simultaneously, is facilely grafted onto the mesoporous silica nanoparticles. As-synthesized CMSN-A is endowed with small size (80-110nm), large conical pores (15-23nm), and moderate Zeta potential (+25±2mV), which behaves high gene loading capacity, good stability and effectively gene transfection. Moreover, CMSN-A exhibits dual micro-environment responsive (lower pH, more reducing substances) due to the redox-sensitive disulfide bond and pH-sensitive amide bond in the short chain ammonium group. The cellular uptake study indicates that CMSN-A could transfer both plasmid DNA (pDNA) and siRNA into different kinds of tumour cells, which demonstrate the promising potential of CMSN-A as effective and safe gene-delivery vectors.
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Affiliation(s)
- Yujie Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Mingyang Hei
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yufang Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Weiping Zhu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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28
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Bockuviene A, Slavuckyte K, Vareikis A, Zigmantas S, Zaliauskiene L, Makuska R. Intracellular Delivery and Triggered Release of DNA Using Biodegradable Poly(2-hydroxypropylene imine)s Containing Cystamine Units. Macromol Biosci 2016; 16:1497-1505. [PMID: 27412922 DOI: 10.1002/mabi.201600155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/17/2016] [Indexed: 11/10/2022]
Abstract
Poly(2-hydroxypropylene imine)s containing segments of cystamine (PHPI-CA) are synthesized by polycondensation of 1,3-dibromo-2-propanol with a mixture of 1,3-diamino-2-propanol and cystamine. High molecular weight fractions of these polymers are collected by ultrafiltration and characterized by chemical analysis, 1 H and 13 C-NMR spectroscopy, size-exclusion chromatography with triple detection, and potentiometric titration, and are tested for DNA delivery in vitro. It is shown that PHPI-CA are highly branched polymers containing disulfide linkages. Transfection efficiency of PHPI-CA for DNA gives similar results to that of PHPI with GFP+ cell percent reaching 80-90%. Cytotoxicity levels for PHPI-CA are lower than that of PHPI. Novel polymers containing different amounts of disulfide linkages are able to disintegrate and release DNA following the treatment with reducing agent 1,4-dithiothreitol. Downstream application of PHPI-CA transfected cells for RNA purification shows that RNA yield is not affected even after the double transfection suggesting that these polymers could be great candidates for in vitro and in vivo transfection.
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Affiliation(s)
- Alma Bockuviene
- Department of Polymer Chemistry, Vilnius University, Naugarduko 24, LT-03225, Vilnius, Lithuania.
| | | | - Ausvydas Vareikis
- Department of Polymer Chemistry, Vilnius University, Naugarduko 24, LT-03225, Vilnius, Lithuania
| | - Sarunas Zigmantas
- Thermo Fisher Scientific Baltics, Graiciuno 8, LT-02241, Vilnius, Lithuania
| | | | - Ricardas Makuska
- Department of Polymer Chemistry, Vilnius University, Naugarduko 24, LT-03225, Vilnius, Lithuania.
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29
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Lebre F, Borchard G, Faneca H, Pedroso de Lima MC, Borges O. Intranasal Administration of Novel Chitosan Nanoparticle/DNA Complexes Induces Antibody Response to Hepatitis B Surface Antigen in Mice. Mol Pharm 2016; 13:472-82. [PMID: 26651533 DOI: 10.1021/acs.molpharmaceut.5b00707] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The generation of strong pathogen-specific immune responses at mucosal surfaces where hepatitis B virus (HBV) transmission can occur is still a major challenge. Therefore, new vaccines are urgently needed in order to overcome the limitations of existing parenteral ones. Recent studies show that this may be achieved by intranasal immunization. Chitosan has gained attention as a nonviral gene delivery system; however, its use in vivo is limited due to low transfection efficiency mostly related to strong interaction between the negatively charged DNA and the positively charged chitosan. We hypothesize that the adsorption of negatively charged human serum albumin (HSA) onto the surface of the chitosan particles would facilitate the intracellular release of DNA, enhancing transfection activity. Here, we demonstrate that a robust systemic immune response was induced after vaccination using HSA-loaded chitosan nanoparticle/DNA (HSA-CH NP/DNA) complexes. Furthermore, intranasal immunization with HSA-CH NP/DNA complexes induced HBV specific IgA in nasal and vaginal secretions; no systemic or mucosal responses were detected after immunization with DNA alone. Overall, our results show that chitosan-based DNA complexes elicited both humoral and mucosal immune response, making them an interesting and valuable gene delivery system for nasal vaccination against HBV.
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Affiliation(s)
- F Lebre
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra , 3004-0504 Coimbra, Portugal.,Faculty of Pharmacy, University of Coimbra , Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - G Borchard
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne , Quai Ernest Ansermet 30, 1211 Geneva, Switzerland
| | - H Faneca
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra , 3004-0504 Coimbra, Portugal.,Department of Life Sciences, University of Coimbra , 3004-517 Coimbra, Portugal
| | - M C Pedroso de Lima
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra , 3004-0504 Coimbra, Portugal.,Department of Life Sciences, University of Coimbra , 3004-517 Coimbra, Portugal
| | - O Borges
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra , 3004-0504 Coimbra, Portugal.,Faculty of Pharmacy, University of Coimbra , Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
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Di Gioia S, Trapani A, Castellani S, Carbone A, Belgiovine G, Craparo EF, Puglisi G, Cavallaro G, Trapani G, Conese M. Nanocomplexes for gene therapy of respiratory diseases: Targeting and overcoming the mucus barrier. Pulm Pharmacol Ther 2015; 34:8-24. [PMID: 26192479 DOI: 10.1016/j.pupt.2015.07.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/04/2015] [Accepted: 07/06/2015] [Indexed: 12/21/2022]
Abstract
Gene therapy, i.e. the delivery and expression of therapeutic genes, holds great promise for congenital and acquired respiratory diseases. Non-viral vectors are less toxic and immunogenic than viral vectors, although they are characterized by lower efficiency. However, they have to overcome many barriers, including inflammatory and immune mediators and cells. The respiratory and airway epithelial cells, the main target of these vectors, are coated with a layer of mucus, which hampers the effective reaching of gene therapy vectors carrying either plasmid DNA or small interfering RNA. This barrier is thicker in many lung diseases, such as cystic fibrosis. This review summarizes the most important advancements in the field of non-viral vectors that have been achieved with the use of nanoparticulate (NP) systems, composed either of polymers or lipids, in the lung gene delivery. In particular, different strategies of targeting of respiratory and airway lung cells will be described. Then, we will focus on the two approaches that attempt to overcome the mucus barrier: coating of the nanoparticulate system with poly(ethylene glycol) and treatment with mucolytics. Our conclusions are: 1) Ligand and physical targeting can direct therapeutic gene expression in specific cell types in the respiratory tract; 2) Mucopenetrating NPs are endowed with promising features to be useful in treating respiratory diseases and should be now advanced in pre-clinical trials. Finally, we discuss the development of such polymer- and lipid-based NPs in the context of in vitro and in vivo disease models, such as lung cancer, as well as in clinical trials.
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Affiliation(s)
- Sante Di Gioia
- Department of Medical and Surgical Sciences, University of Foggia, Viale L. Pinto 1, 71122 Foggia, Italy
| | - Adriana Trapani
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", Via Orabona, 4, 70125 Bari, Italy
| | - Stefano Castellani
- Department of Medical and Surgical Sciences, University of Foggia, Viale L. Pinto 1, 71122 Foggia, Italy
| | - Annalucia Carbone
- Department of Medical and Surgical Sciences, University of Foggia, Viale L. Pinto 1, 71122 Foggia, Italy; Medical Genetics Laboratory, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 12, 20122 Milan, Italy
| | - Giuliana Belgiovine
- Department of Medical and Surgical Sciences, University of Foggia, Viale L. Pinto 1, 71122 Foggia, Italy
| | - Emanuela Fabiola Craparo
- Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biocompatible Polymers, University of Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Giovanni Puglisi
- Dipartimento di Scienze del Farmaco, Università degli Studi di Catania, Viale A. Doria, 6, 95125 Catania, Italy
| | - Gennara Cavallaro
- Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biocompatible Polymers, University of Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Giuseppe Trapani
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", Via Orabona, 4, 70125 Bari, Italy
| | - Massimo Conese
- Department of Medical and Surgical Sciences, University of Foggia, Viale L. Pinto 1, 71122 Foggia, Italy.
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Cole G, McCaffrey J, Ali AA, McCarthy HO. DNA vaccination for prostate cancer: key concepts and considerations. Cancer Nanotechnol 2015; 6:2. [PMID: 26161151 PMCID: PMC4488504 DOI: 10.1186/s12645-015-0010-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 05/16/2015] [Indexed: 11/10/2022] Open
Abstract
While locally confined prostate cancer is associated with a low five year mortality rate, advanced or metastatic disease remains a major challenge for healthcare professionals to treat and is usually terminal. As such, there is a need for the development of new, efficacious therapies for prostate cancer. Immunotherapy represents a promising approach where the host's immune system is harnessed to mount an anti-tumour effect, and the licensing of the first prostate cancer specific immunotherapy in 2010 has opened the door for other immunotherapies to gain regulatory approval. Among these strategies DNA vaccines are an attractive option in terms of their ability to elicit a highly specific, potent and wide-sweeping immune response. Several DNA vaccines have been tested for prostate cancer and while they have demonstrated a good safety profile they have faced problems with low efficacy and immunogenicity compared to other immunotherapeutic approaches. This review focuses on the positive aspects of DNA vaccines for prostate cancer that have been assessed in preclinical and clinical trials thus far and examines the key considerations that must be employed to improve the efficacy and immunogenicity of these vaccines.
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Affiliation(s)
- Grace Cole
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL Northern Ireland UK
| | - Joanne McCaffrey
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL Northern Ireland UK
| | - Ahlam A Ali
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL Northern Ireland UK
| | - Helen O McCarthy
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL Northern Ireland UK
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Saleh T, Bolhassani A, Shojaosadati SA, Aghasadeghi MR. MPG-based nanoparticle: An efficient delivery system for enhancing the potency of DNA vaccine expressing HPV16E7. Vaccine 2015; 33:3164-70. [PMID: 26001433 DOI: 10.1016/j.vaccine.2015.05.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 04/20/2015] [Accepted: 05/09/2015] [Indexed: 10/23/2022]
Abstract
DNA vaccines against human papillomavirus (HPV) type 16 have not been successful in clinical trials, due to the lack of an appropriate delivery system. In this study, a peptide-based gene delivery system, MPG, which forms stable non-covalent nanoparticles with nucleic acids, was used for in vitro and in vivo delivery of HPV16 E7 DNA as a model antigen. The results demonstrated that at Nitrogen/Phosphate (N/P) ratio over 10:1, this peptide can effectively condense plasmid DNA into stable nanoparticles with an average size of 180-210nm and a positive surface charge. The transfection efficiency of MPG-based nanoparticles was shown to be comparable with Polyethyleneimine (PEI). The efficient protein expression detected by western blotting and flow cytometry supports the potential of MPG-based nanoparticles as a potent delivery system in DNA vaccine formulations. Immunization with MPG/E7DNA nanoparticles at an N/P ratio of 10:1 induced a stronger Th1 cellular immune response with a predominant interferon-γ (IFN-γ) profile than those induced by E7DNA alone in a murine tumor model. These findings suggest that MPG peptide as a novel gene delivery system could have promising applications in improving HPV therapeutic vaccines.
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Affiliation(s)
- Tayebeh Saleh
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Azam Bolhassani
- Department of Hepatitis and AIDs, Pasteur Institute of Iran, Tehran, Iran.
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Abstract
Among the several delivery materials available so far, polysaccharides represent very attractive molecules as they can undergo a wide range of chemical modifications, are biocompatible, biodegradable, and have low immunogenic properties. Thus, polysaccharides can contribute to significantly overcome the limitation in the use of many types of drugs, including anti-cancer drugs. The use of conventional anti-cancer drugs is hampered by their high toxicity, mostly depending on the indiscriminate targeting of both cancer and normal cells. Additionally, for nucleic acid based drugs (NABDs), an emerging class of drugs with potential anti-cancer value, the practical use is problematic. This mostly depends on their fast degradation in biological fluids and the difficulties to cross cell membranes. Thus, for both classes of drugs, the development of optimal delivery materials is crucial. Here we discuss the possibility of using different kinds of polysaccharides, such as chitosan, hyaluronic acid, dextran, and pullulan, as smart drug delivery materials. We first describe the main features of polysaccharides, then a general overview about the aspects ruling drug release mechanisms and the pharmacokinetic are reported. Finally, notable examples of polysaccharide-based delivery of conventional anti-cancer drugs and NABDs are reported. Whereas additional research is required, the promising results obtained so far, fully justify further efforts, both in terms of economic support and investigations in the field of polysaccharides as drug delivery materials.
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34
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Redondo JA, Martínez-Campos E, Navarro R, Reinecke H, Elvira C, López-Lacomba JL, Gallardo A. Effect on in vitro cell response of the statistical insertion of N-(2-hydroxypropyl) methacrylamide on linear pro-dendronic polyamine's gene carriers. Eur J Pharm Biopharm 2015; 93:303-10. [PMID: 25937440 DOI: 10.1016/j.ejpb.2015.04.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 04/15/2015] [Accepted: 04/17/2015] [Indexed: 12/11/2022]
Abstract
Statistical copolymers of N-(2-hydroxypropyl) methacrylamide (HPMA) and the dendronic methacrylic monomer 2-(3-(Bis(2-(diethylamino)ethyl)amino)propanamido)ethyl methacrylate (TEDETAMA, derived from N,N,N',N'-tetraethyldiethylenetriamine, TEDETA), were synthesized through radical copolymerization and evaluated in vitro as non-viral gene carriers. Three copolymers with nominal molar percentages of HPMA of 25%, 50% and 75% were prepared and studied comparatively to the positive controls poly-TEDETAMA and hyperbranched polyethyleneimine (PEI, 25kDa). Their ability to complex DNA at different N/P molar ratios, from 1/1 up to 8/1, was determined through agarose gel electrophoresis and Dynamic Light Scattering. The resulting complexes (polyplexes) were characterized and evaluated in vitro as possible non-viral gene carriers for Swiss-3T3 fibroblasts, using luciferase as reporter gene and a calcein cytocompatibility assay. All the copolymers, except the one with highest HPMA proportion (75 molar %) at the lowest N/P ratio, condensed DNA to a particle size between 100 and 300 nm. The copolymers with 25 and 50 molar % of HPMA displayed higher transfection efficiency and cytocompatibility than the positive controls poly-TEDETAMA and PEI. A higher proportion of HPMA (75 molar %) led to copolymers that displayed very low transfection efficiency, despite their full cytocompatibility even at the highest N/P ratio. These results indicate that the statistical combination of TEDETAMA and HPMA and its fine compositional tuning in the copolymers may fulfill the fine balance of transfection efficiency and cytocompatibility in a superior way to the control poly-TEDETAMA and PEI.
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Affiliation(s)
- Juan Alfonso Redondo
- Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Enrique Martínez-Campos
- Institute of Biofunctional Studies (IEB), Tissue Engineering Group, (UCM), Associated Unit to the Institute of Polymer Science and Technology (CSIC), Paseo de Juan XXIII 1, 28040 Madrid, Spain
| | - Rodrigo Navarro
- Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Helmut Reinecke
- Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Carlos Elvira
- Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - José Luis López-Lacomba
- Institute of Biofunctional Studies (IEB), Tissue Engineering Group, (UCM), Associated Unit to the Institute of Polymer Science and Technology (CSIC), Paseo de Juan XXIII 1, 28040 Madrid, Spain
| | - Alberto Gallardo
- Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
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35
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Sardo C, Farra R, Licciardi M, Dapas B, Scialabba C, Giammona G, Grassi M, Grassi G, Cavallaro G. Development of a simple, biocompatible and cost-effective Inulin-Diethylenetriamine based siRNA delivery system. Eur J Pharm Sci 2015; 75:60-71. [PMID: 25845631 DOI: 10.1016/j.ejps.2015.03.021] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/28/2015] [Accepted: 03/24/2015] [Indexed: 02/07/2023]
Abstract
Small interfering RNAs (siRNAs) have the potential to be of therapeutic value for many human diseases. So far, however, a serious obstacle to their therapeutic use is represented by the absence of appropriate delivery systems able to protect them from degradation and to allow an efficient cellular uptake. In this work we developed a siRNA delivery system based on inulin (Inu), an abundant and natural polysaccharide. Inu was functionalized via the conjugation with diethylenetriamine (DETA) residues to form the complex Inu-DETA. We studied the size, surface charge and the shape of the Inu-DETA/siRNA complexes; additionally, the cytotoxicity, the silencing efficacy and the cell uptake-mechanisms were studied in the human bronchial epithelial cells (16HBE) and in the hepatocellular carcinoma derived cells (JHH6). The results presented here indicate that Inu-DETA copolymers can effectively bind siRNAs, are highly cytocompatible and, in JHH6, can effectively deliver functional siRNAs. Optimal delivery is observed using a weight ratio Inu-DETA/siRNA of 4 that corresponds to polyplexes with an average size of 600nm and a slightly negative surface charge. Moreover, the uptake and trafficking mechanisms, mainly based on micropinocytosis and clatrin mediated endocytosis, allow the homogeneous diffusion of siRNA within the cytoplasm of JHH6. Notably, in 16 HBE where the trafficking mechanism (caveolae mediated endocytosis) does not allow an even distribution of siRNA within the cell cytoplasm, no significant siRNA activity is observed. In conclusion, we developed a novel inulin-based siRNA delivery system able to efficiently release siRNA in JHH6 with negligible cytotoxicity thus opening the way for further testing in more complex in vivo models.
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Affiliation(s)
- C Sardo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche, Farmaceutiche (STEBICEF), Lab of Biocompatible Polymers, University of Palermo, via Archirafi 32, 90123 Palermo, Italy
| | - R Farra
- Department of Engineering and Architecture, University of Trieste, Via Alfonso Valerio, 6/A, I-34127 Trieste, Italy
| | - M Licciardi
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche, Farmaceutiche (STEBICEF), Lab of Biocompatible Polymers, University of Palermo, via Archirafi 32, 90123 Palermo, Italy
| | - B Dapas
- Department of Life Sciences, University Hospital of Cattinara, Strada di Fiume 447, 34100 Trieste, Italy
| | - C Scialabba
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche, Farmaceutiche (STEBICEF), Lab of Biocompatible Polymers, University of Palermo, via Archirafi 32, 90123 Palermo, Italy
| | - G Giammona
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche, Farmaceutiche (STEBICEF), Lab of Biocompatible Polymers, University of Palermo, via Archirafi 32, 90123 Palermo, Italy
| | - M Grassi
- Department of Engineering and Architecture, University of Trieste, Via Alfonso Valerio, 6/A, I-34127 Trieste, Italy
| | - G Grassi
- Department of Life Sciences, University Hospital of Cattinara, Strada di Fiume 447, 34100 Trieste, Italy.
| | - G Cavallaro
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche, Farmaceutiche (STEBICEF), Lab of Biocompatible Polymers, University of Palermo, via Archirafi 32, 90123 Palermo, Italy
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36
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Blanquer SBG, Grijpma DW, Poot AA. Delivery systems for the treatment of degenerated intervertebral discs. Adv Drug Deliv Rev 2015; 84:172-87. [PMID: 25451138 DOI: 10.1016/j.addr.2014.10.024] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 08/29/2014] [Accepted: 10/20/2014] [Indexed: 12/25/2022]
Abstract
The intervertebral disc (IVD) is the most avascular and acellular tissue in the body and therefore prone to degeneration. During IVD degeneration, the balance between anabolic and catabolic processes in the disc is deregulated, amongst others leading to alteration of extracellular matrix production, abnormal enzyme activities and production of pro-inflammatory substances like cytokines. The established treatment strategy for IVD degeneration consists of physiotherapy, pain medication by drug therapy and if necessary surgery. This approach, however, has shown limited success. Alternative strategies to increase and prolong the effects of bioactive agents and to reverse the process of IVD degeneration include the use of delivery systems for drugs, proteins, cells and genes. In view of the specific anatomy and physiology of the IVD and depending on the strategy of the therapy, different delivery systems have been developed which are reviewed in this article.
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Affiliation(s)
- S B G Blanquer
- MIRA Institute for Biomedical Technology and Technical Medicine, Department of Biomaterials Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands; Collaborative Research Partner Annulus Fibrosus Rupture Program of AO Foundation, Davos, Switzerland
| | - D W Grijpma
- MIRA Institute for Biomedical Technology and Technical Medicine, Department of Biomaterials Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands; Collaborative Research Partner Annulus Fibrosus Rupture Program of AO Foundation, Davos, Switzerland; University of Groningen, University Medical Center Groningen, W.J. Kolff Institute, Department of Biomedical Engineering, P.O. Box 196, 9700 AD Groningen, The Netherlands.
| | - A A Poot
- MIRA Institute for Biomedical Technology and Technical Medicine, Department of Biomaterials Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands; Collaborative Research Partner Annulus Fibrosus Rupture Program of AO Foundation, Davos, Switzerland
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37
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Lattin JR, Javadi M, McRae M, Pitt WG. Cytosolic delivery via escape from the endosome using emulsion droplets and ultrasound. J Drug Target 2015; 23:469-79. [PMID: 25673266 DOI: 10.3109/1061186x.2015.1009074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Vaporizing emulsion droplets may aid in endosomal rupture as a drug delivery route to the cytosol. Upon insonation, emulsion droplets formed from perfluorocarbon liquids may vaporize with sufficient expansion to disrupt liposomal or endosomal membranes. Emulsion droplets of perfluorohexane (PFC6) or perfluoropentane (PFC5) were prepared as free droplets in calcein or as droplets encapsulated within liposomes containing calcein. Folate-stimulated endocytosis created an experimental model, wherein calcein was self-quenched until released from the vesicles. Upon release, calcein was diluted below its self-quenching concentration and its release quantified by fluorescence. In this experimental model, folated emulsions or folated eLiposomes were incubated with folate-starved HeLa cells. Samples were exposed to two seconds of 20-kHz ultrasound (US) at 1 W/cm(2). Fluorescence microscopy identified released intracellular calcein. Upon insonation, both free emulsion samples and eLiposome samples produced calcein release to the cytosol. Calcein fluorescence was more intense in samples containing PFC5 compared to PFC6. Insonation of samples without emulsion droplets produced no cytosolic delivery. Likewise, cells that took up emulsion droplets but were not exposed to US did not exhibit fluorescence throughout the cell. These results suggest that vaporizing emulsion droplets are internalized into the cells and can produce endosomal escape of a therapeutic payload.
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38
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Rata-Aguilar A, Segovia-Ramos N, Jódar-Reyes AB, Ramos-Pérez V, Borrós S, Ortega-Vinuesa JL, Martín-Rodríguez A. The role of hydrophobic alkyl chains in the physicochemical properties of poly(β-amino ester)/DNA complexes. Colloids Surf B Biointerfaces 2015; 126:374-80. [DOI: 10.1016/j.colsurfb.2014.11.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 10/24/2014] [Accepted: 11/30/2014] [Indexed: 12/19/2022]
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39
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Misra SK, Ohoka A, Kolmodin NJ, Pan D. Next Generation Carbon Nanoparticles for Efficient Gene Therapy. Mol Pharm 2015; 12:375-85. [DOI: 10.1021/mp500742y] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Santosh K. Misra
- Department of Bioengineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Beckman Institute, Biomedical Research
Center, Carle Foundation Hospital, Urbana, Illinois 61801, United States
| | - Ayako Ohoka
- Department of Bioengineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Beckman Institute, Biomedical Research
Center, Carle Foundation Hospital, Urbana, Illinois 61801, United States
| | - Nicholas J. Kolmodin
- Department of Bioengineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Beckman Institute, Biomedical Research
Center, Carle Foundation Hospital, Urbana, Illinois 61801, United States
| | - Dipanjan Pan
- Department of Bioengineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Beckman Institute, Biomedical Research
Center, Carle Foundation Hospital, Urbana, Illinois 61801, United States
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40
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Munisso M, Obika S, Yamaoka T. Nucleic acid delivery systems based on poly(galactosyl ureaethyl methacrylate-b-dimethylamino ethyl methacrylate) diblock copolymers. Carbohydr Polym 2014; 114:288-296. [DOI: 10.1016/j.carbpol.2014.08.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 08/04/2014] [Accepted: 08/05/2014] [Indexed: 10/24/2022]
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41
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Tay CY, Menon N, Leong DT, Tan LP. Molecular Architecture Governs Cytotoxicity and Gene Transfection Efficacy of Polyethylenimine Based Nanoplexes in Mammalian Cell Lines. J Inorg Organomet Polym Mater 2014. [DOI: 10.1007/s10904-014-0135-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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42
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Dong H, Parekh HS, Xu ZP. Enhanced cellular delivery and biocompatibility of a small layered double hydroxide-liposome composite system. Pharmaceutics 2014; 6:584-98. [PMID: 25431895 PMCID: PMC4279134 DOI: 10.3390/pharmaceutics6040584] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 11/10/2014] [Accepted: 11/11/2014] [Indexed: 01/13/2023] Open
Abstract
The various classes of gene delivery vectors possess distinct advantages and disadvantages, each of which impacts on cargo loading, delivery and, ultimately, its function. With this in mind, herein we report on a small layered double hydroxide (sLDH)–liposome composite system, drawing upon the salient features of LDH and liposome classes of vectors, while avoiding their inherent shortfalls when used independently. sLDH–liposome composites were prepared by the hydration of freeze-dried matrix method. These composite systems, with a Z-average size of ≈200 nm, exhibited low cytotoxicity and demonstrated good suspension stability, both in water and cell culture medium after rehydration. Our studies demonstrate that short dsDNAs/ssDNAs were completely bound and protected in the composite system at an sLDH:DNA mass ratio of 20:1, regardless of the approach to DNA loading. This composite system delivered DNA to HCT-116 cells with ≈3-fold greater efficiency, when compared to sLDH alone. Our findings point towards the sLDH-liposome composite system being an effective and biocompatible gene delivery system.
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Affiliation(s)
- Haiyan Dong
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
| | - Harendra S Parekh
- Pharmacy Australia Centre of Excellence, School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia.
| | - Zhi Ping Xu
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
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43
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Pavan GM. Modeling the Interaction between Dendrimers and Nucleic Acids: a Molecular Perspective through Hierarchical Scales. ChemMedChem 2014; 9:2623-31. [DOI: 10.1002/cmdc.201402280] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Indexed: 01/02/2023]
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44
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Sharma R, Nisakar D, Shivpuri S, Ganguli M. Contrasting effects of cysteine modification on the transfection efficiency of amphipathic peptides. Biomaterials 2014; 35:6563-75. [PMID: 24816284 DOI: 10.1016/j.biomaterials.2014.04.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 04/13/2014] [Indexed: 12/20/2022]
Abstract
Delivery of DNA to cells remains a key challenge towards development of gene therapy. A better understanding of the properties involved in stability and transfection efficiency of the vector could critically contribute to the improvement of delivery vehicles. In the present work we have chosen two peptides differing only in amphipathicity and explored how presence of cysteine affects DNA uptake and transfection efficiency. We report an unusual observation that addition of cysteine selectively increases transfection efficiency of secondary amphipathic peptide (Mgpe-9) and causes a drop in the primary amphipathic peptide (Mgpe-10). Our results point the effect of cysteine is dictated by the importance of physicochemical properties of the carrier peptide. We also report a DNA delivery agent Mgpe-9 exhibiting high transfection efficiency in multiple cell lines (including hard-to-transfect cell lines) with minimal cytotoxicity which can be further explored for in vivo applications.
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Affiliation(s)
- Rajpal Sharma
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110 020, India
| | - Daniel Nisakar
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110 020, India
| | - Shivangi Shivpuri
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110 020, India
| | - Munia Ganguli
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110 020, India.
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45
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Khvedelidze M, Mdzinarashvili T, Shekiladze E, Schneider M, Moersdorf D, Bernhardt I. Structure of drug delivery DPPA and DPPC liposomes with ligands and their permeability through cells. J Liposome Res 2014; 25:20-31. [PMID: 24766638 DOI: 10.3109/08982104.2014.911316] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Dipalmitoylphosphatidylcholine (DPPC) and 1,2-palmitoyl-phosphatidic acid (DPPA) liposomes, prepared by conventional rotary evaporation method, have similar structural organization, though they have significant differences. The similarity is that both types of lipids create standard bilayer liposomes with strong hydrophobic forces between lipids tails and with homogeneous bonds of hydrogen and electrostatic nature between hydrophilic lipids heads. By the calorimetric method, it has been shown that hydrophobic bonds break but liposomes' destruction does not occur by heating till 150 °C. As for bonds between lipid heads in liposomes, their cooperative destruction takes place at 41 °C for DPPC and 66 °C for DPPA liposomes. In the case of thermal distraction of DPPC liposomes, two so-called pre transitions peaks were observed before the main transition peak, which indicates that DPPC liposomes' structure is multilamellar. DPPA liposomes have one cooperative heat absorption peak, which points to a unilamellar structure of such liposomes. Substances of hydrophobic/hydrophilic nature, incorporated into the liposomes, are placed in hydrophobic or hydrophilic parts of liposomes, which lead to a change in calorimetric peak shapes and thermodynamic parameters. It has been shown that gold nanoparticles, incorporated into the DPPC liposomes, are able to enter Caco-2 cells. In contrast, these nanoparticles do not enter red blood cells.
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Affiliation(s)
- Mariam Khvedelidze
- Institute of Medical and Applied Biophysics, I. Javakhishvili Tbilisi State University , Tbilisi , Georgia
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Niosomes from 80s to present: the state of the art. Adv Colloid Interface Sci 2014; 205:187-206. [PMID: 24369107 DOI: 10.1016/j.cis.2013.11.018] [Citation(s) in RCA: 276] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 11/26/2013] [Indexed: 01/14/2023]
Abstract
Efficient and safe drug delivery has always been a challenge in medicine. The use of nanotechnology, such as the development of nanocarriers for drug delivery, has received great attention owing to the potential that nanocarriers can theoretically act as "magic bullets" and selectively target affected organs and cells while sparing normal tissues. During the last decades the formulation of surfactant vesicles, as a tool to improve drug delivery, brought an ever increasing interest among the scientists working in the area of drug delivery systems. Niosomes are self assembled vesicular nanocarriers obtained by hydration of synthetic surfactants and appropriate amounts of cholesterol or other amphiphilic molecules. Just like liposomes, niosomes can be unilamellar or multilamellar, are suitable as carriers of both hydrophilic and lipophilic drugs and are able to deliver drugs to the target site. Furthermore, niosomal vesicles, that are usually non-toxic, require less production costs and are stable over a longer period of time in different conditions, so overcoming some drawbacks of liposomes. The niosome properties are specifically dictated by size, shape, and surface chemistry which are able to modify the drug's intrinsic pharmacokinetics and eventual drug targeting to the areas of pathology. This up-to-date review deals with composition, preparation, characterization/evaluation, advantages, disadvantages and application of niosomes.
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Jin L, Zeng X, Liu M, Deng Y, He N. Current progress in gene delivery technology based on chemical methods and nano-carriers. Am J Cancer Res 2014; 4:240-55. [PMID: 24505233 PMCID: PMC3915088 DOI: 10.7150/thno.6914] [Citation(s) in RCA: 246] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Accepted: 11/16/2013] [Indexed: 12/21/2022] Open
Abstract
Gene transfer methods are promising in the field of gene therapy. Current methods for gene transfer include three major groups: viral, physical and chemical methods. This review mainly summarizes development of several types of chemical methods for gene transfer in vitro and in vivo by means of nano-carriers like; calcium phosphates, lipids, and cationic polymers including chitosan, polyethylenimine, polyamidoamine dendrimers, and poly(lactide-co-glycolide). This review also briefly introduces applications of these chemical methods for gene delivery.
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48
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Abstract
Recent interest in clinical therapy has been directed to deliver nucleic acids (DNA, RNA or short-chain oligonucleotides) that alter gene expression within a specific cell population, thereby manipulating cellular processes and responses, which in turn stimulate immune responses or tissue regeneration, or blocks expression at the level of transcription or translation for treatment of several diseases. Both ex vivo and in vivo gene delivery can be achieved mostly by using a delivery system (vector). Viral vectors exhibit high gene expression, but also have very significant side effects. Mainly cationic polymeric systems are used as nonviral vectors, although usually with low levels of transfection. Through the use of stimuli-responsive polymers as novel vectors for gene delivery, two benefits can be obtained: high gene expression efficiency and more selective gene expression.
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Affiliation(s)
- Erhan Piskin
- Hacettepe University, Chemical Engineering Department, Bioengineering Division, Beytepe, Ankara, Turkey.
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49
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Abstract
For the last five decades cationic polymers have been used for nucleic acids transfection. Our understanding of polymer-nucleic acid interactions and their rational use in delivery has continuously increased. The great improvements in macromolecular chemistry and the recognition of distinct biological extra- and intracellular delivery hurdles triggered several breakthrough developments, including the discovery of natural and synthetic polycations for compaction of nucleic acids into stable nanoparticles termed polyplexes; the incorporation of targeting ligands and surface-shielding of polyplexes to enable receptor-mediated gene delivery into defined target tissues; and strongly improved intracellular transfer efficacy by better endosomal escape of vesicle-trapped polyplexes into the cytosol. These experiences triggered the development of second-generation polymers with more dynamic properties, such as endosomal pH-responsive release mechanisms, or biodegradable units for improved biocompatibility and intracellular release of the nucleic acid pay load. Despite a better biological understanding, significant challenges such as efficient nuclear delivery and persistence of gene expression persist. The therapeutic perspectives widened from pDNA-based gene therapy to application of novel therapeutic nucleic acids including mRNA, siRNA, and microRNA. The finding that different therapeutic pay loads require different tailor-made carriers complicates preclinical developments. Convincing evidence of medical efficacy still remains to be demonstrated. Bioinspired multifunctional polyplexes resembling "synthetic viruses" appear as attractive opportunity, but provide additional challenges: how to identify optimum combinations of functional delivery units, and how to prepare such polyplexes reproducibly in precise form? Design of sequence-defined polymers, screening of combinatorial polymer and polyplex libraries are tools for further chemical evolution of polyplexes.
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Affiliation(s)
- Ernst Wagner
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-University Munich, and Nanosystems Initiative Munich (NIM), Munich, Germany
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50
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Fast targeted gene transfection and optogenetic modification of single neurons using femtosecond laser irradiation. Sci Rep 2013; 3:3281. [PMID: 24257461 PMCID: PMC3836031 DOI: 10.1038/srep03281] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 10/15/2013] [Indexed: 12/20/2022] Open
Abstract
A prevailing problem in neuroscience is the fast and targeted delivery of DNA into selected neurons. The development of an appropriate methodology would enable the transfection of multiple genes into the same cell or different genes into different neighboring cells as well as rapid cell selective functionalization of neurons. Here, we show that optimized femtosecond optical transfection fulfills these requirements. We also demonstrate successful optical transfection of channelrhodopsin-2 in single selected neurons. We extend the functionality of this technique for wider uptake by neuroscientists by using fast three-dimensional laser beam steering enabling an image-guided "point-and-transfect" user-friendly transfection of selected cells. A sub-second transfection timescale per cell makes this method more rapid by at least two orders of magnitude when compared to alternative single-cell transfection techniques. This novel technology provides the ability to carry out large-scale cell selective genetic studies on neuronal ensembles and perform rapid genetic programming of neural circuits.
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