1
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Fu M, Moiseev RV, Hyder M, Hayes W, Amadesi S, Williams AC, Khutoryanskiy VV. Exploring Mucoadhesive and Toxicological Characteristics Following Modification of Linear Polyethylenimine with Various Anhydrides. Biomacromolecules 2024. [PMID: 39074308 DOI: 10.1021/acs.biomac.4c00220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2024]
Abstract
Linear polyethylenimine (L-PEI) has numerous applications, such as in pharmaceutical formulations, gene delivery, and water treatment. However, due to the presence of secondary amine groups, L-PEI shows a relatively high toxicity and low biocompatibility. Here, various organic anhydrides were used to modify L-PEI to reduce its toxicity and enhance its functionality. We selected methacrylic anhydride, crotonic anhydride, maleic anhydride, and succinic anhydride to modify L-PEI. The structure of the resulting derivatives was characterized using 1H NMR and FTIR spectroscopies, and their behavior in aqueous solutions was studied using turbidimetric and electrophoretic mobility measurements over a broad range of pHs. A fluorescence flow through method determined the mucoadhesive properties of the polymers to the bovine palpebral conjunctiva. Methacrylated L-PEI and crotonylated L-PEI showed strong mucoadhesive properties at pH 7.4, likely due to covalent bonding with mucin thiol groups. In contrast, maleylated and succinylated L-PEI were poorly mucoadhesive as the pH was above their isoelectric point, resulting in electrostatic repulsion between the polymers and mucin. The toxicity of these polymers was evaluated using in vivo assays with planaria and the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) cell viability assay in human alveolar epithelial cells. Moreover, the irritancy of polymers was assessed using a slug mucosa irritation assay. The results demonstrated that anhydride modification mitigated the adverse toxicity effects seen for parent L-PEI.
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Affiliation(s)
- Manfei Fu
- School of Pharmacy, University of Reading, Whiteknights, Post Office Box 224, Reading RG6 6DX, U.K
| | - Roman V Moiseev
- School of Pharmacy, University of Reading, Whiteknights, Post Office Box 224, Reading RG6 6DX, U.K
- Physicochemical, Ex Vivo and Invertebrate Tests and Analysis Centre (PEVITAC,www.pevitac.co.uk), University of Reading, Whiteknights, Reading RG6 6DX, U.K
| | - Matthew Hyder
- Department of Chemistry, University of Reading, Whiteknights, Post Office Box 224, Reading RG6 6DX, U.K
| | - Wayne Hayes
- Department of Chemistry, University of Reading, Whiteknights, Post Office Box 224, Reading RG6 6DX, U.K
| | - Silvia Amadesi
- School of Pharmacy, University of Reading, Whiteknights, Post Office Box 224, Reading RG6 6DX, U.K
| | - Adrian C Williams
- School of Pharmacy, University of Reading, Whiteknights, Post Office Box 224, Reading RG6 6DX, U.K
| | - Vitaliy V Khutoryanskiy
- School of Pharmacy, University of Reading, Whiteknights, Post Office Box 224, Reading RG6 6DX, U.K
- Physicochemical, Ex Vivo and Invertebrate Tests and Analysis Centre (PEVITAC,www.pevitac.co.uk), University of Reading, Whiteknights, Reading RG6 6DX, U.K
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2
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Fu L, Bridges CA, Kim HN, Ding C, Bao Hou NC, Yeow J, Fok S, Macmillan A, Sterling JD, Baker SM, Lord MS. Cationic Polysaccharides Bind to the Endothelial Cell Surface Extracellular Matrix Involving Heparan Sulfate. Biomacromolecules 2024; 25:3850-3862. [PMID: 38775104 DOI: 10.1021/acs.biomac.4c00477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Cationic polysaccharides have been extensively studied for drug delivery via the bloodstream, yet few have progressed to clinical use. Endothelial cells lining the blood vessel wall are coated in an anionic extracellular matrix called the glycocalyx. However, we do not fully comprehend the charged polysaccharide interactions with the glycocalyx. We reveal that the cationic polysaccharide poly(acetyl, arginyl) glucosamine (PAAG) exhibits the highest association with the endothelial glycocalyx, followed by dextran (neutral) and hyaluronan (anionic). Furthermore, we demonstrate that PAAG binds heparan sulfate (HS) within the glycocalyx, leading to intracellular accumulation. Using an in vitro glycocalyx model, we demonstrate a charge-based extent of association of polysaccharides with HS. Mechanistically, we observe that PAAG binding to HS occurs via a condensation reaction and functionally protects HS from degradation. Together, this study reveals the interplay between polysaccharide charge properties and interactions with the endothelial cell glycocalyx toward improved delivery system design and application.
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Affiliation(s)
- Lu Fu
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Claire A Bridges
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Ha Na Kim
- Molecular Surface Interaction Laboratory, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW 2052, Australia
| | - Catherine Ding
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Nicole Chiwei Bao Hou
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jonathan Yeow
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Sandra Fok
- Katherina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW 2052, Australia
| | - Alexander Macmillan
- Katherina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW 2052, Australia
| | - James D Sterling
- Riggs School of Applied Life Sciences, Keck Graduate Institute, Claremont, California 91711, United States
| | - Shenda M Baker
- Synedgen Inc, Claremont, California 91711, United States
| | - Megan S Lord
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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3
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Li X, Zuo Y, Lin X, Guo B, Jiang H, Guan N, Zheng H, Huang Y, Gu X, Yu B, Wang X. Develop Targeted Protein Drug Carriers through a High-Throughput Screening Platform and Rational Design. Adv Healthc Mater 2024:e2401793. [PMID: 38804201 DOI: 10.1002/adhm.202401793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 05/24/2024] [Indexed: 05/29/2024]
Abstract
Protein-based drugs offer advantages, such as high specificity, low toxicity, and minimal side effects compared to small molecule drugs. However, delivery of proteins to target tissues or cells remains challenging due to the instability, diverse structures, charges, and molecular weights of proteins. Polymers have emerged as a leading choice for designing effective protein delivery systems, but identifying a suitable polymer for a given protein is complicated by the complexity of both proteins and polymers. To address this challenge, a fluorescence-based high-throughput screening platform called ProMatch to efficiently collect data on protein-polymer interactions, followed by in vivo and in vitro experiments with rational design is developed. Using this approach to streamline polymer selection for targeted protein delivery, candidate polymers from commercially available options are identified and a polyhexamethylene biguanide (PHMB)-based system for delivering proteins to white adipose tissue as a treatment for obesity is developed. A branched polyethylenimine (bPEI)-based system for neuron-specific protein delivery to stimulate optic nerve regeneration is also developed. The high-throughput screening methodology expedites identification of promising polymer candidates for tissue-specific protein delivery systems, thereby providing a platform to develop innovative protein-based therapeutics.
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Affiliation(s)
- Xiaodan Li
- Department of Neurobiology and Department of Rehabilitation Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, P. R. China
- Nanhu Brain-Computer Interface Institute, Hangzhou, 311100, China
- Liangzhu Laboratory, MOE Frontier Science Center for Brain Science and Brain-Machine Integration, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, 1369 West Wenyi Road, Hangzhou, 311121, China
- NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University, Hangzhou, 310058, China
| | - Yanming Zuo
- Department of Neurobiology and Department of Rehabilitation Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, P. R. China
- Nanhu Brain-Computer Interface Institute, Hangzhou, 311100, China
- Liangzhu Laboratory, MOE Frontier Science Center for Brain Science and Brain-Machine Integration, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, 1369 West Wenyi Road, Hangzhou, 311121, China
- NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University, Hangzhou, 310058, China
| | - Xurong Lin
- Department of Neurobiology and Department of Rehabilitation Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, P. R. China
- Lingang Laboratory, Shanghai, 200031, China
| | - Binjie Guo
- Department of Neurobiology and Department of Rehabilitation Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, P. R. China
- Lingang Laboratory, Shanghai, 200031, China
| | - Haohan Jiang
- Department of Neurobiology and Department of Rehabilitation Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, P. R. China
- Lingang Laboratory, Shanghai, 200031, China
| | - Naiyu Guan
- Department of Neurobiology and Department of Rehabilitation Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, P. R. China
- Nanhu Brain-Computer Interface Institute, Hangzhou, 311100, China
- Liangzhu Laboratory, MOE Frontier Science Center for Brain Science and Brain-Machine Integration, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, 1369 West Wenyi Road, Hangzhou, 311121, China
- NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University, Hangzhou, 310058, China
| | - Hanyu Zheng
- Department of Neurobiology and Department of Rehabilitation Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, P. R. China
- Lingang Laboratory, Shanghai, 200031, China
| | - Yan Huang
- Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, 226001, China
| | - Xiaosong Gu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, Nantong, Jiangsu, 226001, P. R. China
| | - Bin Yu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, Nantong, Jiangsu, 226001, P. R. China
| | - Xuhua Wang
- Department of Neurobiology and Department of Rehabilitation Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, P. R. China
- Nanhu Brain-Computer Interface Institute, Hangzhou, 311100, China
- Liangzhu Laboratory, MOE Frontier Science Center for Brain Science and Brain-Machine Integration, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, 1369 West Wenyi Road, Hangzhou, 311121, China
- NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University, Hangzhou, 310058, China
- Lingang Laboratory, Shanghai, 200031, China
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, 226001, P. R. China
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4
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Apuzzo E, Agazzi M, Herrera SE, Picco A, Rizzo G, Chavero C, Bianchi D, Smaldini P, Cortez ML, Marmisollé WA, Padula G, Seoane A, Alomar ML, Denofrio MP, Docena G, Azzaroni O. Poly(allylamine)-tripolyphosphate Ionic Assemblies as Nanocarriers: Friend or Foe? ACS APPLIED BIO MATERIALS 2023; 6:4714-4727. [PMID: 37863908 DOI: 10.1021/acsabm.3c00489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
Designing effective drug nanocarriers that are easy to synthesize, robust, and nontoxic is a significant challenge in nanomedicine. Polyamine-multivalent molecule nanocomplexes are promising drug carriers due to their simple and all-aqueous manufacturing process. However, these systems can present issues of colloidal instability over time and cellular toxicity due to the cationic polymer. In this study, we finely modulate the formation parameters of poly(allylamine-tripolyphosphate) complexes to jointly optimize the robustness and safety. Polyallylamine was ionically assembled with tripolyphosphate anions to form liquid-like nanocomplexes with a size of around 200 nm and a zeta potential of -30 mV. We found that nanocomplexes exhibit tremendous long-term stability (9 months of storage) in colloidal dispersion and that they are suitable as protein-loading agents. Moreover, the formation of nanocomplexes induced by tripolyphosphate anions produces a switch-off in the toxicity of the system by altering the overall charge from positive to negative. In addition, we demonstrate that nanocomplexes can be internalized by bone-marrow-derived macrophage cells. Altogether, these nanocomplexes have attractive and promising properties as delivery nanoplatforms for potential therapies based on the immune system activation.
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Affiliation(s)
- Eugenia Apuzzo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), (UNLP, CONICET), 1900 La Plata, Buenos Aires, Argentina
| | - Maximiliano Agazzi
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), (UNRC, CONICET), Ruta Nacional 36 KM 601, 5800 Río Cuarto, Córdoba, Argentina
| | - Santiago E Herrera
- Instituto de Química de los Materiales, Ambiente y Energía (INQUIMAE), (UBA, CONICET), C1428EGA Buenos Aires, Argentina
| | - Agustín Picco
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), (UNLP, CONICET), 1900 La Plata, Buenos Aires, Argentina
| | - Gastón Rizzo
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), (UNLP, CONICET), asociado a CIC-PBA, 1900 La Plata, Buenos Aires ,Argentina
| | - Camila Chavero
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), (UNLP, CONICET), asociado a CIC-PBA, 1900 La Plata, Buenos Aires ,Argentina
| | - Daiana Bianchi
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), (UNLP, CONICET), asociado a CIC-PBA, 1900 La Plata, Buenos Aires ,Argentina
| | - Paola Smaldini
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), (UNLP, CONICET), asociado a CIC-PBA, 1900 La Plata, Buenos Aires ,Argentina
| | - María Lorena Cortez
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), (UNLP, CONICET), 1900 La Plata, Buenos Aires, Argentina
| | - Waldemar A Marmisollé
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), (UNLP, CONICET), 1900 La Plata, Buenos Aires, Argentina
| | - Gisel Padula
- Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout" (IGEVET), (UNLP, CONICET), 1900 La Plata, Buenos Aires, Argentina
- Facultad de Ciencias Naturales y Museo (FCNyM), (UNLP, CONICET), 1900 La Plata, Buenos Aires ,Argentina
| | - Analía Seoane
- Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout" (IGEVET), (UNLP, CONICET), 1900 La Plata, Buenos Aires, Argentina
| | - Maria Lis Alomar
- Instituto Tecnológico de Chascomús (INTECH), (UNSAM, CONICET) 7130, Chascomús, Buenos Aires ,Argentina
| | - Maria Paula Denofrio
- Instituto Tecnológico de Chascomús (INTECH), (UNSAM, CONICET) 7130, Chascomús, Buenos Aires ,Argentina
| | - Guillermo Docena
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), (UNLP, CONICET), asociado a CIC-PBA, 1900 La Plata, Buenos Aires ,Argentina
| | - Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), (UNLP, CONICET), 1900 La Plata, Buenos Aires, Argentina
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5
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Correia JS, Mirón-Barroso S, Hutchings C, Ottaviani S, Somuncuoğlu B, Castellano L, Porter AE, Krell J, Georgiou TK. How does the polymer architecture and position of cationic charges affect cell viability? Polym Chem 2023; 14:303-317. [PMID: 36760606 PMCID: PMC9846193 DOI: 10.1039/d2py01012g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Polymer chemistry, composition and molar mass are factors that are known to affect cytotoxicity, however the influence of polymer architecture has not been investigated systematically. In this study the influence of the position of the cationic charges along the polymer chain on cytotoxicity was investigated while keeping constant the other polymer characteristics. Specifically, copolymers of various architectures, based on a cationic pH responsive monomer, 2-(dimethylamino)ethyl methacrylate (DMAEMA) and a non-ionic hydrophilic monomer, oligo(ethylene glycol)methyl ether methacrylate (OEGMA) were engineered and their toxicity towards a panel of cell lines investigated. Of the seven different polymer architectures examined, the block-like structures were less cytotoxic than statistical or gradient/tapered architectures. These findings will assist in developing future vectors for nucleic acid delivery.
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Affiliation(s)
| | | | | | - Silvia Ottaviani
- The John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent UniversityNottingham NG11 8NSUK,Department of Surgery and Cancer, Division of Cancer, Imperial College London, Imperial Centre for Translational and Experimental Medicine (ICTEM)London W12 0NNUK
| | | | - Leandro Castellano
- Department of Surgery and Cancer, Division of Cancer, Imperial College London, Imperial Centre for Translational and Experimental Medicine (ICTEM)London W12 0NNUK,School of Life Sciences, John Maynard Smith Building, University of SussexBrightonUK
| | | | - Jonathan Krell
- Department of Surgery & Cancer, Imperial College LondonUK
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6
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Javanmardi S, Abolmaali SS, Mehrabanpour MJ, Aghamaali MR, Tamaddon AM. PEGylated nanohydrogels delivering anti-MicroRNA-21 suppress ovarian tumor-associated angiogenesis in matrigel and chicken chorioallantoic membrane models. BIOIMPACTS : BI 2022; 12:449-461. [PMID: 36381633 PMCID: PMC9596881 DOI: 10.34172/bi.2022.23263] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 07/31/2021] [Accepted: 09/23/2021] [Indexed: 06/16/2023]
Abstract
Introduction: Recently, MicroRNAs have gained increasing popularity as a novel nucleic acid-mediated medicine to regulate cancer-related protein expression. MicroRNA-21 (miR-21) is known as an oncogenic microRNA which is overexpressed in almost all cancers, including ovarian carcinoma that causes cisplatin (cis-Pt) resistance and vascular endothelial growth factor (VEGF) upregulation. So, miRNA-based therapy can be regarded as knocking down miR-21 expression, inducing tumor cell apoptosis, and suppressing tumor-associated angiogenesis. Methods: PEG5k-carboxymethylated polyethyleneimine nanohydrogels (PEG5k-CMPEI) were loaded with AntagomiR-21 (As-21) at different ratios of nitrogen to phosphorus (N/P). Particle size and ζ potential were determined for the As-21 loaded nanohydrogels. In the cellular experiments, miR-21 expression, cytotoxicity, and cis-Pt sensitivity were studied on A2780 ovarian cancer cell lines. Finally, tumor cell apoptosis and tumor cell-associated angiogenesis were explored in vitro and in vivo. Results: The nanohydrogels, featuring homogeneous size distribution and redox-responsiveness, were steadily loaded by As-21 at the optimum N/P ratio of 5 without any aggregation as determined by transmission electron microscopy (TEM). As-21-loaded nanohydrogels caused sequence-specific suppression of miR-21 expression and provoked apoptosis through ROS generation and caspase 3 activation. Cisplatin cytotoxicity was remarkably enhanced in A2780R as compared to A2780S following co-incubation with As-21-loaded nanohydrogels. Interestingly, the condition of the medium derived from As-21 nanohydrogel-treated A2780R cells inhibited VEGF suppression in human umbilical vein endothelial cells (HUVECs) and the formation of tubes in Matrigel. Moreover, the condition medium caused angiogenesis inhibition in the chicken chorioallantoic membrane (CAM) model. Conclusion: These results suggest that nanohydrogel-based delivery of As-21 can be a promising neoadjuvant therapy for treating resistant tumors via apoptosis induction and angiogenesis suppression.
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Affiliation(s)
- Sanaz Javanmardi
- Department of Biology, Faculty of Science, University of Guilan, Rasht, Iran
| | - Samira Sadat Abolmaali
- Pharmaceutical Nanotechnology Department and Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | | | | | - Ali Mohammad Tamaddon
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz 71345, Iran
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7
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Costa B, Boueri B, Oliveira C, Silveira I, Ribeiro AJ. Lipoplexes and polyplexes as nucleic acids delivery nanosystems: The current state and future considerations. Expert Opin Drug Deliv 2022; 19:577-594. [DOI: 10.1080/17425247.2022.2075846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Bruno Costa
- University of Coimbra, Faculty of Pharmacy, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Beatriz Boueri
- University of Coimbra, Faculty of Pharmacy, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Claudia Oliveira
- Group Genetics of Cognitive Dysfunction, IBMC - Instituto de Biologia Molecular e Celular, I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Isabel Silveira
- University of Coimbra, Faculty of Pharmacy, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
- Group Genetics of Cognitive Dysfunction, IBMC - Instituto de Biologia Molecular e Celular, I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Antonio J. Ribeiro
- University of Coimbra, Faculty of Pharmacy, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
- Group Genetics of Cognitive Dysfunction, IBMC - Instituto de Biologia Molecular e Celular, I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
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8
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Therapeutic effect of quercetin polymeric nanoparticles on ischemia/reperfusion-induced acute kidney injury in mice. Biochem Biophys Res Commun 2022; 608:122-127. [PMID: 35397424 DOI: 10.1016/j.bbrc.2022.03.159] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 03/31/2022] [Indexed: 11/22/2022]
Abstract
Acute kidney injury (AKI) is known as a sudden episode of kidney injury, which happens suddenly within a few hours or a few days. Quercetin (3,3',4',5,7-pentahydroxyflavone) is a flavonoid found in plants. Quercetin is known to have several biological activities, such as anti-oxidant, anti-inflammatory, and anti-carcinogenic effects. However, low water solubility and bioavailability are the limitations of quercetin for its clinical applications. Moreover, ischemia/reperfusion (I/R) injury is a common cause of AKI. There are no satisfactory strategies for I/R-induced AKI. Developing suitable preventive or therapeutic intervention for AKI is an important and urgent issue. We investigated the benefit effect of synthesized polyethylene glycol (PEG) conjugated polyethyleneimine (PEI) nanoparticles for targeted delivery of quercetin on AKI in a mouse model. An I/R-induced AKI mouse model was used to evaluate the therapeutic effect of quercetin polymeric nanoparticles by intravenous injection. Biochemical changes for renal function in blood samples were analyzed. Histological and immunohistochemical changes were also analyzed. The biochemical changes of blood urea nitrogen (BUN), creatinine, and cystatin C were significantly increased in I/R-induced AKI mice, which could be significantly reversed by quercetin polymeric nanoparticles. Quercetin polymeric nanoparticles could also significantly decrease the histological lesions, positive staining for 3-nitrotyrosine and cyclooxygenase-2, and lipid peroxidation in the kidneys of I/R-induced AKI mice. These results demonstrate for the first time that quercetin polymeric nanoparticles possess therapeutic potential for the treatment of I/R-induced AKI in vivo.
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9
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Chitosan-Crosslinked Low Molecular Weight PEI-Conjugated Iron Oxide Nanoparticle for Safe and Effective DNA Delivery to Breast Cancer Cells. NANOMATERIALS 2022; 12:nano12040584. [PMID: 35214917 PMCID: PMC8876741 DOI: 10.3390/nano12040584] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/30/2022] [Accepted: 02/04/2022] [Indexed: 02/06/2023]
Abstract
Breast cancer has attracted tremendous research interest in treatment development as one of the major threats to public health. The use of non-viral carriers for therapeutic DNA delivery has shown promise in treating various cancer types, including breast cancer, due to their high DNA loading capacity, high cell transfection efficiency, and design versatility. However, cytotoxicity and large sizes of non-viral DNA carriers often raise safety concerns and hinder their applications in the clinic. Here we report the development of a novel nanoparticle formulation (termed NP-Chi-xPEI) that can safely and effectively deliver DNA into breast cancer cells for successful transfection. The nanoparticle is composed of an iron oxide core coated with low molecular weight (800 Da) polyethyleneimine crosslinked with chitosan via biodegradable disulfide bonds. The NP-Chi-xPEI can condense DNA into a small nanoparticle with the overall size of less than 100 nm and offer full DNA protection. Its biodegradable coating of small-molecular weight xPEI and mildly positive surface charge confer extra biocompatibility. NP-Chi-xPEI-mediated DNA delivery was shown to achieve high transfection efficiency across multiple breast cancer cell lines with significantly lower cytotoxicity as compared to the commercial transfection agent Lipofectamine 3000. With demonstrated favorable physicochemical properties and functionality, NP-Chi-xPEI may serve as a reliable vehicle to deliver DNA to breast cancer cells.
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10
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Sütekin SD, Demirci S, Kurt SB, Güven O, Sahiner N. Tunable fluorescent and antimicrobial properties of poly(vinyl amine) affected by the acidic or basic hydrolysis of poly(N‐vinylformamide). J Appl Polym Sci 2021. [DOI: 10.1002/app.51234] [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)
| | - Sahin Demirci
- Faculty of Science and Arts, Department of Chemistry Canakkale Onsekiz Mart University Canakkale Turkey
- Nanoscience and Technology Research and Application Center (NANORAC) Canakkale Onsekiz Mart University Canakkale Turkey
| | - Saliha B. Kurt
- Faculty of Science and Arts, Department of Chemistry Canakkale Onsekiz Mart University Canakkale Turkey
| | - Olgun Güven
- Department of Chemistry Hacettepe University Ankara Turkey
| | - Nurettin Sahiner
- Faculty of Science and Arts, Department of Chemistry Canakkale Onsekiz Mart University Canakkale Turkey
- Nanoscience and Technology Research and Application Center (NANORAC) Canakkale Onsekiz Mart University Canakkale Turkey
- Department of Chemical and Biomolecular Engineering University of South Florida Tampa Florida USA
- Department of Ophthalmology, Morsani College of Medicine University of South Florida Tampa Florida USA
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11
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Kalinova R, Valchanova M, Dimitrov I, Turmanova S, Ugrinova I, Petrova M, Vlahova Z, Rangelov S. Functional Polyglycidol-Based Block Copolymers for DNA Complexation. Int J Mol Sci 2021; 22:ijms22179606. [PMID: 34502513 PMCID: PMC8431755 DOI: 10.3390/ijms22179606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 01/04/2023] Open
Abstract
Gene therapy is an attractive therapeutic method for the treatment of genetic disorders for which the efficient delivery of nucleic acids into a target cell is critical. The present study is aimed at evaluating the potential of copolymers based on linear polyglycidol to act as carriers of nucleic acids. Functional copolymers with linear polyglycidol as a non-ionic hydrophilic block and a second block bearing amine hydrochloride pendant groups were prepared using previously synthesized poly(allyl glycidyl ether)-b-polyglycidol block copolymers as precursors. The amine functionalities were introduced via highly efficient radical addition of 2-aminoethanethiol hydrochloride to the alkene side groups. The modified copolymers formed loose aggregates with strongly positive surface charge in aqueous media, stabilized by the presence of dodecyl residues at the end of the copolymer structures and the hydrogen-bonding interactions in polyglycidol segments. The copolymer aggregates were able to condense DNA into stable and compact nanosized polyplex particles through electrostatic interactions. The copolymers and the corresponding polyplexes showed low to moderate cytotoxicity on a panel of human cancer cell lines. The cell internalization evaluation demonstrated the capability of the polyplexes to successfully deliver DNA into the cancer cells.
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Affiliation(s)
- Radostina Kalinova
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Miroslava Valchanova
- Department of Material Science and Technology, University “Prof. Assen Zlatarov”, 8010 Burgas, Bulgaria; (M.V.); (S.T.)
| | - Ivaylo Dimitrov
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
- Correspondence: (I.D.); (I.U.); (S.R.)
| | - Sevdalina Turmanova
- Department of Material Science and Technology, University “Prof. Assen Zlatarov”, 8010 Burgas, Bulgaria; (M.V.); (S.T.)
| | - Iva Ugrinova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
- Correspondence: (I.D.); (I.U.); (S.R.)
| | - Maria Petrova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
| | - Zlatina Vlahova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
- Correspondence: (I.D.); (I.U.); (S.R.)
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12
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Ramirez-Phillips AC, Liu D. Therapeutic Genome Editing and In Vivo Delivery. AAPS JOURNAL 2021; 23:80. [PMID: 34080099 DOI: 10.1208/s12248-021-00613-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/20/2021] [Indexed: 11/30/2022]
Abstract
Improvements in the understanding of human genetics and its roles in disease development and prevention have led to an increased interest in therapeutic genome editing via the use of engineered nucleases. Various approaches have been explored in the past focusing on the development of an effective and safe system for sequence-specific editing. Compared to earlier nucleases such as zinc finger nuclease and transcription activator-like effector nuclease, the relatively low cost and ease of producing clustered regularly interspaced short palindromic repeats associated protein 9 (CRISPR/Cas9) systems have made therapeutic genome editing significantly more feasible. CRISPR/Cas9 genome editing has shown great potential to correct genetic mutations implicated in monogenic diseases and to eradicate latent or chronic viral infections in preclinical studies. Several CRISPR/Cas9-based therapeutics have reached the clinical stage, including treatments for inherited red blood cell disorders and Leber Congenital Amaurosis 10, as well as CRISPR/Cas9-edited T cells designed to target and destroy cancer cells. Further advances in therapeutic genome editing will rely on a safe and more efficient method of in vivo CRISPR/Cas9 delivery and improved efficiency of homology-directed repair for site-specific gene insertion or replacement. While other reviews have focused on one or two aspects of CRISPR/Cas9 genome editing, this review aims to provide a summary of the mechanisms of genome editing, the reasons for the emerging interest in CRISPR/Cas9 compared to other engineered nucleases, the current progress in developing CRISPR/Cas9 delivery systems, and the current preclinical and clinical applications of CRISPR/Cas9 genome editing.
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Affiliation(s)
| | - Dexi Liu
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, Georgia, 30602, USA.
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13
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Zheng N, Cudjoe DK, Song W. Multicomponent Polymerization toward Cationic Polymers for Efficient Gene Delivery. Macromol Rapid Commun 2020; 42:e2000464. [PMID: 33051922 DOI: 10.1002/marc.202000464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/18/2020] [Indexed: 12/17/2022]
Abstract
A new class of cationic polymers containing tertiary amine, thioether, and hydroxyl groups are prepared via a catalyst-free, multicomponent polymerization method using dithiol, formaldehyde, and di-sec-amine with a ratio of 1:2:1, to access a library of water-soluble polymers with well-defined structures and suitable molecular weights (Mw ranging from 5000 to 8000 Da) in high yields (up to 90%). Such polycations are demonstrated to be promising nonviral gene delivery vectors with high transfection efficiency (up to 3.5-fold of PEI25k) and low toxicity with multiple functionalities: 1) efficient gene condensation by tertiary amine groups; 2) reactive oxygen species scavenging by thioether groups; and 3) positive charge shielding by hydroxyl groups. Both the thioether and hydroxyl groups are contributed to reduce the cytotoxicity of the polycations by tuning the oxidative stress and preventing the undesired serum binding. The optimized polycations can achieve high transfection efficiency under the serum conditions, indicating the great potential as a nonviral gene delivery vector candidate for clinical application.
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Affiliation(s)
- Nan Zheng
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Daniel Kwesi Cudjoe
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Wangze Song
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
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14
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Su D, Coste M, Diaconu A, Barboiu M, Ulrich S. Cationic dynamic covalent polymers for gene transfection. J Mater Chem B 2020; 8:9385-9403. [DOI: 10.1039/d0tb01836h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dynamic covalent polymers have revealed strong potential in gene delivery, thanks to their versatile self-assembly, adaptive and responsive behaviors.
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Affiliation(s)
- Dandan Su
- Institut Européen des Membranes
- Adaptive Supramolecular Nanosystems Group
- University of Montpellier
- ENSCM
- CNRS
| | - Maëva Coste
- Institut des Biomolécules Max Mousseron (IBMM)
- CNRS
- Université of Montpellier
- ENSCM
- Montpellier
| | - Andrei Diaconu
- Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi
- Romania
| | - Mihail Barboiu
- Institut Européen des Membranes
- Adaptive Supramolecular Nanosystems Group
- University of Montpellier
- ENSCM
- CNRS
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM)
- CNRS
- Université of Montpellier
- ENSCM
- Montpellier
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15
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Saqafi B, Rahbarizadeh F. Polyethyleneimine-polyethylene glycol copolymer targeted by anti-HER2 nanobody for specific delivery of transcriptionally targeted tBid containing construct. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:501-511. [PMID: 30810413 DOI: 10.1080/21691401.2018.1549063] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The present research seeks to investigate the process of mixing targeted gene delivery and transcriptional targeting. We have conjugated Polyethylenimine polymers (PEI) and molecules of poly (ethylene glycol). The next step was covalent attachment of anti-HER2 variables domains of camelid heavy chains antibodies (VHHs) or nanobodies (Nbs) to the distal terminals of NHS-PEG3500 in PEI-PEG nanoparticles. The whole procedure yielded PEI-PEG-Nb immunoconjugates. Having determined the properties of polyplexes, steps were taken to investigate the most efficient ratio of PEI polymers to pDNA molecules (N/P) so that the greatest rate of transfection may be obtained. This immune targeted nano biopolymer could condense the gene constructs that coded a transcriptionally targeted truncated -Bid (tBid) killer gene which was controlled by the breast cancer-specific MUC1 promoter. The favourable physicochemical properties matching both the size and zeta potential were observed in engineered polyplexes. Elevated transfection efficiency in HER2 positive cell lines using Nb-modified polyplexes were shown by the results of flow cytometry as compared against non-modified particles. 1.6 and 4.8 fold higher transfection efficiencies were observed in in vitro gene expression researches which used PEI-PEG-Nb/pGL4.50 compared to the situation when native PEI polymers were utilized in both BT-474 and SK-BR-3, respectively. A 2.22 and 3.62 fold rise in the level of tBid gene expression in BT-474 and SK-BR-3 cell lines relative to unmodified PEI treated cells was the result of transfection with PEI-PEG-Nb/pMUC1-tBid, respectively. In those HER2-positive cells which were transfected by targeted polyplexes, higher levels of cell death were observed. This fact points not only to the effective targeted delivery, but it is also indicative of transcriptional targeting efficiency of tBid killer gene when its expression is controlled by MUC1 promoter.
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Affiliation(s)
- Batoul Saqafi
- a Faculty of Medical Sciences, Department of Medical Biotechnology , Tarbiat Modares University , Tehran , Iran
| | - Fatemeh Rahbarizadeh
- a Faculty of Medical Sciences, Department of Medical Biotechnology , Tarbiat Modares University , Tehran , Iran
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16
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Santo D, Mendonça PV, Lima MS, Cordeiro RA, Cabanas L, Serra A, Coelho JFJ, Faneca H. Poly(ethylene glycol)- block-poly(2-aminoethyl methacrylate hydrochloride)-Based Polyplexes as Serum-Tolerant Nanosystems for Enhanced Gene Delivery. Mol Pharm 2019; 16:2129-2141. [PMID: 30986077 DOI: 10.1021/acs.molpharmaceut.9b00101] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Incorporation of poly(ethylene glycol) (PEG) into polyplexes has been used as a promising approach to enhance their stability and reduce unwanted interactions with biomolecules. However, this strategy generally has a negative influence on cellular uptake and, consequently, on transfection of target cells. In this work, we explore the effect of PEGylation on biological and physicochemical properties of poly(2-aminoethyl methacrylate) (PAMA)-based polyplexes. For this purpose, different tailor-made PEG- b-PAMA block copolymers, and the respective homopolymers, were synthesized using the controlled/"living" radical polymerization method based on activators regenerated by electron transfer atom transfer radical polymerization. The obtained data show that PEG- b-PAMA-based polyplexes exhibited a much better transfection activity/cytotoxicity relationship than the corresponding non-PEGylated nanocarriers. The best formulation, prepared with the largest block copolymer (PEG45- b-PAMA168) at a 25:1 N/P ratio, presented a 350-fold higher transfection activity in the presence of serum than that obtained with polyplexes generated with the gold standard bPEI. This higher transfection activity was associated to an improved capability to overcome the intracellular barriers, namely the release from the endolysosomal pathway and the vector unpacking and consequent DNA release from the nanosystem inside cells. Moreover, these nanocarriers exhibit suitable physicochemical properties for gene delivery, namely reduced sizes, high DNA protection, and colloidal stability. Overall, these findings demonstrate the high potential of the PEG45- b-PAMA168 block copolymer as a gene delivery system.
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Affiliation(s)
- Daniela Santo
- Center for Neuroscience and Cell Biology , University of Coimbra , 3004-504 Coimbra , Portugal
| | - Patrícia V Mendonça
- CEMMPRE, Department of Chemical Engineering , University of Coimbra , 3030-790 Coimbra , Portugal
| | - Mafalda S Lima
- CEMMPRE, Department of Chemical Engineering , University of Coimbra , 3030-790 Coimbra , Portugal
| | - Rosemeyre A Cordeiro
- Center for Neuroscience and Cell Biology , University of Coimbra , 3004-504 Coimbra , Portugal
| | - Luis Cabanas
- Center for Neuroscience and Cell Biology , University of Coimbra , 3004-504 Coimbra , Portugal
| | - Arménio Serra
- CEMMPRE, Department of Chemical Engineering , University of Coimbra , 3030-790 Coimbra , Portugal
| | - Jorge F J Coelho
- CEMMPRE, Department of Chemical Engineering , University of Coimbra , 3030-790 Coimbra , Portugal
| | - Henrique Faneca
- Center for Neuroscience and Cell Biology , University of Coimbra , 3004-504 Coimbra , Portugal
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17
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Javanmardi S, Tamaddon AM, Aghamaali MR, Ghahramani L, Abolmaali SS. Redox-sensitive, PEG-shielded carboxymethyl PEI nanogels silencing MicroRNA-21, sensitizes resistant ovarian cancer cells to cisplatin. Asian J Pharm Sci 2018; 15:69-82. [PMID: 32175019 PMCID: PMC7066047 DOI: 10.1016/j.ajps.2018.10.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/04/2018] [Accepted: 10/29/2018] [Indexed: 11/28/2022] Open
Abstract
A series of branched polyethylenimine (PEI) modifications including PEGylation (PEG2k-PEI) for steric shielding, redox-sensitive crosslinking for synthesis PEG2k-PEI-ss nanogels and subsequent carboxymethylation (PEG2k-CMPEI-ss) for modulation of the polymer pka have been introduced for cellular delivery of Anti-miR-21. The synthesis was characterized using 1H NMR, FTIR, TNBS, potentiometric titration, particle size and ζ potential. Loading of Anti-miR-21 at various N/P ratios was investigated by gel retardation, ethidium bromide dye exclusion, heparin sulfate competition and DNase I digestion experiments. The miR-21 silencing was measured by stem-loop RT PCR in A2780 ovarian cancer cell lines whether it is sensitive to resistant to cisplatin. It has been shown that PEG2k-CMPEI-ss was well suited for delivery of Anti-miR-21 in terms of nucleic acid loading, preservation against extracellular matrix and nucleases and sequence-specific silencing of miRNA-21 in vitro. Moreover, it has been demonstrated that pre-treating cells with Anti-miR-21 loaded nanogels can sensitize them to cis-Pt even at non-toxic concentraions. The results indicate that PEG2k-CMPEI-ss mediated microRNA delivery can be considered as a novel strategy for ovarian cancer therapy.
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Affiliation(s)
- Sanaz Javanmardi
- Department of Biology, Faculty of Science, University of Guilan, Rasht 64891, Iran
| | - Ali Mohammad Tamaddon
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz 71345, Iran.,School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | | | - Ladan Ghahramani
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | - Samira Sadat Abolmaali
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz 71345, Iran.,School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345, Iran
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18
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Ailincai D, Peptanariu D, Pinteala M, Marin L. Dynamic constitutional chemistry towards efficient nonviral vectors. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:635-646. [PMID: 30423749 DOI: 10.1016/j.msec.2018.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 09/11/2018] [Accepted: 10/01/2018] [Indexed: 10/28/2022]
Abstract
Dynamic constitutional chemistry has been used to design nonviral vectors for gene transfection. Their design has been thought in order to fulfill ab initio the main requirements for gene therapy. As building blocks were used hyperbranched PEI as hydrophilic part and benzentrialdehyde and a diamine linear siloxane as hydrophobic part, connected through reversible imine linkages. The obtaining of the envisaged structures has been confirmed by NMR and FTIR spectroscopy. The dynamic synthesized amphiphiles proved to be able to self-assemble in nano-sized spherical entities as was demonstrated by TEM and DLS, characterized by a narrow dimensional polydispersity. Agarose gel electrophoresis proved the ability of the synthesized compounds to bind DNA, while TEM revealed the spherical morphology of the formed polyplexes. As a proof of the concept, the nonviral vectors promoted an efficient transfection on HeLa cells, demonstrating that dynamic constitutional chemistry can be an important tool in the development of this domain.
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Affiliation(s)
- Daniela Ailincai
- Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania.
| | | | | | - Luminita Marin
- Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania
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19
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Zhang Y, Jiang Q, Bi B, Xu L, Liu J, Zhuo R, Jiang X. A bioreducible supramolecular nanoparticle gene delivery system based on cyclodextrin-conjugated polyaspartamide and adamantyl-terminated polyethylenimine. J Mater Chem B 2018; 6:797-808. [DOI: 10.1039/c7tb02170d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Reduction degradable Pasp-SS-CD/Ad4-PEI/pDNA supramolecular nanoparticles via host–guest interaction exhibited improved cellular internalization and higher gene transfection efficiency with lower cytotoxicity.
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Affiliation(s)
- Yunti Zhang
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Qimin Jiang
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Bo Bi
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Luming Xu
- Research Center for Tissue Engineering and Regenerative Medicine
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430022
| | - Jia Liu
- Research Center for Tissue Engineering and Regenerative Medicine
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430022
| | - Renxi Zhuo
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
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