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Maity T, Aggarwal A, Dasgupta S, Velachi V, Singha Deb AK, Ali SM, Maiti PK. Efficient Removal of Uranyl Ions Using PAMAM Dendrimer: Simulation and Experiment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6794-6802. [PMID: 37126805 DOI: 10.1021/acs.langmuir.3c00332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this work, using atomistic molecular dynamics (MD) simulations and polymer-assisted ultrafiltration experiments, we explore the adsorption and removal of uranyl ions from aqueous solutions using poly(amidoamine) (PAMAM) dendrimers. The effects of uranyl ion concentration and the pH of the solution were examined for PAMAM dendrimers of generations 3, 4, and 5. Our simulation results show that PAMAM has a high adsorption capacity for the uranyl ions. The adsorption capacity increases with increasing concentration of uranyl ions for all 3 generations of PAMAM in agreement with experimental findings. We find that the number of uranyl ions bound to PAMAM is significantly higher in acidic solutions (pH < 3) as compared to neutral solutions (pH ∼ 7) for all uranyl ion concentrations. Additionally, we find an increase in the number of adsorbed uranyl ions to PAMAM with the increase in the dendrimer generation. This increase is due to the greater number of binding sites present for higher-generation PAMAM dendrimers. Our simulation study shows that nitrate ions form a solvation shell around uranyl ions, which allows them to bind to PAMAM binding sites, including the amide, amine, and carbonyl groups. In polymer-assisted ultrafiltration (PAUF) experiments, the removal percentage of uranyl ions by G3 PAMAM dendrimer increased from 36.3% to 42.6% as the metal ion concentration increased from 2.1 × 10-5 M to 10.5 × 10-5 M at a pH of 2. Our combined experiment and simulation study suggests that PAMAM is an effective adsorbent for removing uranyl ions from aqueous solutions.
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Affiliation(s)
- Tarun Maity
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Abhishek Aggarwal
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Subhadeep Dasgupta
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Vasumathi Velachi
- PG & Research Department of Physics, Affiliated to Bharathidasan University, Holy Cross College, Tiruchirappalli 620002, India
| | | | - Sk Musharaf Ali
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai 91-400085, India
| | - Prabal K Maiti
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
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Agrawal K, Gupta VK, Verma P. Microbial cell factories a new dimension in bio-nanotechnology: exploring the robustness of nature. Crit Rev Microbiol 2021; 48:397-427. [PMID: 34555291 DOI: 10.1080/1040841x.2021.1977779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Bio-based nanotechnology has its existence in biological dimensions e.g. microbial cell factories (bacteria, fungi. algae, yeast, cyanobacteria) plants, and biopolymers. They provide multipurpose biological platforms to supply well-designed materials for diverse nano-biotechnological applications. The "green or bio-based synthesis of nanoparticles (NPs)" has witnessed a research outburst in the past decade. The bio-based synthesis of NPs using microbial cell factories is a benign process and requires mild conditions for the synthesis with end products being less/non-toxic. As a result, its application has extended in multitudinous industries including environment, cosmetics, and pharmaceutical. Thus, the present review summarizes all the significant aspects of nanotechnology and the reason to switch towards the bio-based synthesis of NPs using microbial cell factories. It consists of a detailed description of the bio-based methods employed for the synthesis and classification of NPs. Also, a comprehensive study on the application of bio-based NPs in the various industrial and biotechnological domains has been discussed. The limitation and its solution would help identify the applicability of NPs to "identified and unidentified" sectors.
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Affiliation(s)
- Komal Agrawal
- Department of Microbiology, Bioprocess and Bioenergy Laboratory, Central University of Rajasthan, Ajmer, India
| | - Vijai Kumar Gupta
- Center for Safe and Improved Food, Scotland's Rural College (SRUC), Edinburgh, UK.,Biorefining and Advanced Materials Research Center, Scotland's Rural College (SRUC), Edinburgh, UK
| | - Pradeep Verma
- Department of Microbiology, Bioprocess and Bioenergy Laboratory, Central University of Rajasthan, Ajmer, India
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Gataulina AR, Kutyrev GA, Maksimov AF, Ernandes AMP, Kutyreva MP. Synthesis and Complexing Properties of p-Toluensulfonylamido and Phosphorylamido Derivatives of Second-Generation Hyperbranched Polyester. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218110099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Matta A, Katada I, Kawazoe J, Chammingkwan P, Terano M, Taniike T. Stabilization of polypropylene-based materials via molecular retention with hyperbranched polymer. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.05.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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Pashaei-Asl R, Khodadadi K, Pashaei-Asl F, Haqshenas G, Ahmadian N, Pashaiasl M, Hajihosseini Baghdadabadi R. Legionella Pneumophila and Dendrimers-Mediated Antisense Therapy. Adv Pharm Bull 2017; 7:179-187. [PMID: 28761819 PMCID: PMC5527231 DOI: 10.15171/apb.2017.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 04/29/2017] [Accepted: 04/30/2017] [Indexed: 12/13/2022] Open
Abstract
Finding novel and effective antibiotics for treatment of Legionella disease is a challenging field. Treatment with antibiotics usually cures Legionella infection; however, if the resultant disease is not timely recognized and treated properly, it leads to poor prognosis and high case fatality rate. Legionella pneumophila DrrA protein (Defects in Rab1 recruitment protein A)/also known as SidM affects host cell vesicular trafficking through modification of the activity of cellular small guanosine triphosphatase )GTPase( Rab (Ras-related in brain) function which facilitates intracellular bacterial replication within a supporter vacuole. Also, Legionella pneumophila LepA and LepB (Legionella effector protein A and B) proteins suppress host-cell Rab1 protein's function resulting in the cell lysis and release of bacteria that subsequently infect neighbour cells. Legionella readily develops resistant to antibiotics and, therefore, new drugs with different modes of action and therapeutic strategic approaches are urgently required among antimicrobial drug therapies;gene therapy is a novel approach for Legionnaires disease treatment. On the contrary to the conventional treatment approaches that target bacterial proteins, new treatment interventions target DNA (Deoxyribonucleic acid), RNA (Ribonucleic acid) species, and different protein families or macromolecular complexes of these components. The above approaches can overcome the problems in therapy of Legionella infections caused by antibiotics resistance pathogens. Targeting Legionella genes involved in manipulating cellular vesicular trafficking using a dendrimer-mediated antisense therapy is a promising approach to inhibit bacterial replication within the target cells.
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Affiliation(s)
- Roghiyeh Pashaei-Asl
- Department of Biology, Payame Noor University, Tehran, Iran.,Department of Anatomy, Medical School, Iran University of Medical Science, Tehran, Iran.,Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Khodadad Khodadadi
- Genetic Theme, Murdoch Children's Research Institute, Royal Children's Hospital, The University of Melbourne, Melbourne, Australia
| | - Fatima Pashaei-Asl
- Molecular Biology Laboratory, Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Gholamreza Haqshenas
- Microbiology Department, Biomedical Discovery Institute, Monash University, Melbourne, Australia
| | - Nasser Ahmadian
- Transplantation Center, Department of Curative Affairs, Ministry of Health and Medical Education, Tehran, Iran
| | - Maryam Pashaiasl
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Abstract
Bile acids are gaining increasing importance as building blocks in the development of novel polymeric materials. This is evidenced by the growing number of publications advocating the advantages of their incorporation in the design and construction of materials. Composed of a rigid steroid backbone, functional groups with potential towards diverse reactions, and a biocompatible framework, there are various ways in which these molecules can be utilized to afford biomaterials via distinct architectures. Soft materials utilize the intrinsic capacity of bile acids to self-assemble and have seen a range of applications, most notably in the field of drug delivery. On the other hand, there is also the possibility of including bile acids in the polymer backbone, which has been used in the preparation of elastomers. This review discusses a selection of materials that can be prepared using bile acids and the advantages afforded by these molecules. Focus will be on the development of soft and hard materials, where soft materials are described as being held by weak intermolecular interactions, whereas hard materials are mechanically stronger with bile acids covalently incorporated in the polymer network.
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Affiliation(s)
- Alexander J. Cunningham
- Département de Chimie, Université de Montréal, C.P. 1628, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
- Département de Chimie, Université de Montréal, C.P. 1628, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - X.X. Zhu
- Département de Chimie, Université de Montréal, C.P. 1628, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
- Département de Chimie, Université de Montréal, C.P. 1628, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
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Li B, Li F, Ma L, Yang J, Wang C, Wang D, Gao C. Poly(lactide-co-glycolide)/Fibrin Gel Construct as a 3D Model to Evaluate Gene Therapy of Cartilage in Vivo. Mol Pharm 2014; 11:2062-70. [DOI: 10.1021/mp5000136] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bo Li
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Feifei Li
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Lie Ma
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Junzhou Yang
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chunfen Wang
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Dongan Wang
- Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, N1.3-B2-13, 637457 Singapore
| | - Changyou Gao
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Luo K, He B, Wu Y, Shen Y, Gu Z. Functional and biodegradable dendritic macromolecules with controlled architectures as nontoxic and efficient nanoscale gene vectors. Biotechnol Adv 2014; 32:818-30. [PMID: 24389086 DOI: 10.1016/j.biotechadv.2013.12.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 12/13/2013] [Accepted: 12/15/2013] [Indexed: 12/28/2022]
Abstract
Gene therapy has provided great potential to revolutionize the treatment of many diseases. This therapy is strongly relied on whether a delivery vector efficiently and safely directs the therapeutic genes into the target tissue/cells. Nonviral gene delivery vectors have been emerging as a realistic alternative to the use of viral analogs with the potential of a clinically relevant output. Dendritic polymers were employed as nonviral vectors due to their branched and layered architectures, globular shape and multivalent groups on their surface, showing promise in gene delivery. In the present review, we try to bring out the recent trend of studies on functional and biodegradable dendritic polymers as nontoxic and efficient gene delivery vectors. By regulating dendritic polymer design and preparation, together with recent progress in the design of biodegradable polymers, it is possible to precisely manipulate their architectures, molecular weight and chemical composition, resulting in predictable tuning of their biocompatibility as well as gene transfection activities. The multifunctional and biodegradable dendritic polymers possessing the desirable characteristics are expected to overcome extra- and intracellular obstacles, and as efficient and nontoxic gene delivery vectors to move into the clinical arena.
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Affiliation(s)
- Kui Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Bin He
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Youqing Shen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University, Hangzhou 310027, China; Center for Bionanoengineering, Zhejiang University, Hangzhou 310027, China.
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
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Byrne M, Victory D, Hibbitts A, Lanigan M, Heise A, Cryan SA. Molecular weight and architectural dependence of well-defined star-shaped poly(lysine) as a gene delivery vector. Biomater Sci 2013; 1:1223-1234. [PMID: 32481978 DOI: 10.1039/c3bm60123d] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of well-defined star-shaped polypeptides were successfully synthesised by the ring opening polymerisation (ROP) of the N-carboxyanhydride (NCA) of ε-carbobenzyloxy-l-lysine (ZLL) using a range of generations of polypropylene imine (PPI) dendrimers as multifunctional initiators. The monomer feed ratio and dendrimer generation were varied to afford a series of polypeptide dendrimer hybrids with superior structural versatility and functionality. Subsequent protecting group removal yielded star-shaped poly(lysine) of controlled variation in polypeptide chain length and arm multiplicity. Star-shaped PLL polymers were used to prepare pDNA and siRNA to form "polyplexes" to determine their ability to complex different nucleic acid cargoes and were compared with linear PLL polyplex controls. Significant differences in size and surface charge were seen between star-shaped PLL polyplexes and linear PLL polyplexes for both cargoes. The star-shaped polypeptides were capable of more effective complexation of both nucleic acids at low N/P ratios compared to linear PLL as evidenced by zeta potential and electrophoretic data. This was particularly evident in siRNA polyplexes as linear PLL failed to completely complex siRNA into nanocomplexes of appropriate size for cell transfection i.e. <200 nm in size, while star poly(lysine) formed siRNA polyplexes <100 nm at certain N/P ratios, albeit strongly dependent on the particular molecular weight and architecture, as analysed by dynamic light scattering (DLS). Atomic force microscopy (AFM) identified discrete spherically shaped polyplexes for all star-shaped polypeptide-based polyplexes while linear PLL formed elongated irregular shaped complexes. This difference in morphology may go some way towards explaining the 300-fold increase in luciferase expression seen for star-shaped PLL polyplexes G5(64)-PLL40 compared to linear PLL pGLuc polyplexes in epithelial cells. Each of the PPI-PLL polymers appeared to be capable of protecting the nucleic acid cargoes from degradation by the relevant nuclease enzyme as effectively as the positive control polyethyleneimine (PEI) polyplexes. Overall the promising nucleic acid complexation, sizing, morphology and protection capacity of two different genetic "cargoes" highlight the potential of polypeptide dendrimer hybrids as gene delivery vectors.
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Affiliation(s)
- Mark Byrne
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland.
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STUDY ON SUBSTRATE-MEDIATED GENE DELIVERY SYSTEMS LOADED WITH HEPARIN AND HEPARIN-BIOTIN MODIFIED NANOPARTICLES. ACTA POLYM SIN 2011. [DOI: 10.3724/sp.j.1105.2011.11089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Cheng Y, Zhao L, Li Y, Xu T. Design of biocompatible dendrimers for cancer diagnosis and therapy: current status and future perspectives. Chem Soc Rev 2011; 40:2673-703. [PMID: 21286593 DOI: 10.1039/c0cs00097c] [Citation(s) in RCA: 358] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In the past decade, nanomedicine with its promise of improved therapy and diagnostics has revolutionized conventional health care and medical technology. Dendrimers and dendrimer-based therapeutics are outstanding candidates in this exciting field as more and more biological systems have benefited from these starburst molecules. Anticancer agents can be either encapsulated in or conjugated to dendrimer and be delivered to the tumour via enhanced permeability and retention (EPR) effect of the nanoparticle and/or with the help of a targeting moiety such as antibody, peptides, vitamins, and hormones. Imaging agents including MRI contrast agents, radionuclide probes, computed tomography contrast agents, and fluorescent dyes are combined with the multifunctional nanomedicine for targeted therapy with simultaneous cancer diagnosis. However, an important question reported with dendrimer-based therapeutics as well as other nanomedicines to date is the long-term viability and biocompatibility of the nanotherapeutics. This critical review focuses on the design of biocompatible dendrimers for cancer diagnosis and therapy. The biocompatibility aspects of dendrimers such as nanotoxicity, long-term circulation, and degradation are discussed. The construction of novel dendrimers with biocompatible components, and the surface modification of commercially available dendrimers by PEGylation, acetylation, glycosylation, and amino acid functionalization have been proposed as available strategies to solve the safety problem of dendrimer-based nanotherapeutics. Also, exciting opportunities and challenges on the development of dendrimer-based nanoplatforms for targeted cancer diagnosis and therapy are reviewed (404 references).
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Affiliation(s)
- Yiyun Cheng
- School of Life Sciences, East China Normal University, Shanghai, 200062, People's Republic of China.
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Chen S, Li F, Zhuo RX, Cheng SX. Efficient non-viral gene delivery mediated by nanostructured calcium carbonate in solution-based transfection and solid-phase transfection. MOLECULAR BIOSYSTEMS 2011; 7:2841-7. [DOI: 10.1039/c1mb05147d] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Cameron DJA, Shaver MP. Aliphatic polyester polymer stars: synthesis, properties and applications in biomedicine and nanotechnology. Chem Soc Rev 2010; 40:1761-76. [PMID: 21082079 DOI: 10.1039/c0cs00091d] [Citation(s) in RCA: 302] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A critical review: the ring-opening polymerization of cyclic esters provides access to an array of biodegradable, bioassimilable and renewable polymeric materials. Building these aliphatic polyester polymers into larger macromolecular frameworks provides further control over polymer characteristics and opens up unique applications. Polymer stars, where multiple arms radiate from a single core molecule, have found particular utility in the areas of drug delivery and nanotechnology. A challenge in this field is in understanding the impact of altering synthetic variables on polymer properties. We review the synthesis and characterization of aliphatic polyester polymer stars, focusing on polymers originating from lactide, ε-caprolactone, glycolide, β-butyrolactone and trimethylene carbonate monomers and their copolymers including coverage of polyester miktoarm star copolymers. These macromolecular materials are further categorized by core molecules, catalysts employed, self-assembly and degradation properties and the resulting fields of application (262 references).
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Affiliation(s)
- Donald J A Cameron
- Department of Chemistry, University of Prince Edward Island, 550 University Avenue, Charlottetown, PEI, Canada C1A 4P3
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Luo K, Li C, Wang G, Nie Y, He B, Wu Y, Gu Z. Peptide dendrimers as efficient and biocompatible gene delivery vectors: Synthesis and in vitro characterization. J Control Release 2010; 155:77-87. [PMID: 20946920 DOI: 10.1016/j.jconrel.2010.10.006] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 09/14/2010] [Accepted: 10/04/2010] [Indexed: 11/27/2022]
Abstract
We report the synthesis and characterization of different generations of dendritic poly(l-lysine) vectors, and their use for in vitro gene transfection. Gel retardation assay revealed that the dendrimers could form complexes with plasmid DNAs (pDNAs), evident from the inhibition of the migration of pDNA at the N/P ratios of 0.5, 1 and 2 by G3, G4 and G5 dendritic generations, respectively. DNase I assay revealed the protection of pDNA acquired from the complexation with dendrimers from nuclease-catalyzed degradation, with the protection capacity of G5 being even stronger than poly(ethyleneimine) (PEI). Atomic force microscopy (AFM) revealed that all 4 generations of dendrimer/DNA complexes studied were of similar particle sizes within 100-200nm. Zeta potential measurements showed that as the N/P ratio increased from 1 to 25, all dendrimer/pDNA complexes gradually changed from negative to positive charges. The higher generations tended to produce the greater positive potentials, indicating a stronger potency of the complexes to interact with negatively charged cell membranes. In vitro and in vivo cytotoxicity evaluations showed good biocompatibility of the dendrimers and their complexes over the different N/P ratios studied. In vitro gene transfection revealed higher efficiency of G5 than other dendrimers and insensitive variation to the presence of serum. Given its similar transfection efficiency to PEI but lower toxicity to cultured cells, dendrimer G5 could be a better candidate for gene delivery.
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Affiliation(s)
- Kui Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, People's Republic of China
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Chen S, Zhuo RX, Cheng SX. Enhanced gene transfection with addition of a cell-penetrating peptide in substrate-mediated gene delivery. J Gene Med 2010; 12:705-13. [DOI: 10.1002/jgm.1488] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Fu HL, Li YQ, Shao L, Cheng SX, Zhang XZ, Zhuo RX. Gene expression mediated by dendrimer/DNA complexes encapsulated in biodegradable polymer microspheres. J Microencapsul 2010; 27:345-54. [DOI: 10.3109/02652040903215963] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Zhang S, Zhao Y, Zhao B, Wang B. Hybrids of Nonviral Vectors for Gene Delivery. Bioconjug Chem 2010; 21:1003-9. [DOI: 10.1021/bc900261c] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Shubiao Zhang
- SEAC-ME Key Laboratory of Biotechnology and Bioresources Utilization, College of Life Science, Dalian Nationalities University, Dalian 116600, Liaoning, China
| | - Yinan Zhao
- SEAC-ME Key Laboratory of Biotechnology and Bioresources Utilization, College of Life Science, Dalian Nationalities University, Dalian 116600, Liaoning, China
| | - Budiao Zhao
- SEAC-ME Key Laboratory of Biotechnology and Bioresources Utilization, College of Life Science, Dalian Nationalities University, Dalian 116600, Liaoning, China
| | - Bing Wang
- SEAC-ME Key Laboratory of Biotechnology and Bioresources Utilization, College of Life Science, Dalian Nationalities University, Dalian 116600, Liaoning, China
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Pathak A, Patnaik S, Gupta KC. Recent trends in non-viral vector-mediated gene delivery. Biotechnol J 2010; 4:1559-72. [PMID: 19844918 DOI: 10.1002/biot.200900161] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Nucleic acids-based next generation biopharmaceuticals (i.e., pDNA, oligonucleotides, short interfering RNA) are potential pioneering materials to cope with various incurable diseases. However, several biological barriers present a challenge for efficient gene delivery. On the other hand, developments in nanotechnology now offer numerous non-viral vectors that have been fabricated and found capable of transmitting the biopharmaceuticals into the cell and even into specific subcellular compartments like mitochondria. This overview illustrates cellular barriers and current status of non-viral gene vectors, i.e., lipoplexes, liposomes, polyplexes, and nanoparticles, to relocate therapeutic DNA-based nanomedicine into the target cell. Despite the awesome impact of physical methods (i.e., ultrasound, electroporation), chemical methods have been shown to accomplish high-level and safe transgene expression. Further comprehension of barriers and the mechanism of cellular uptake will facilitate development of nucleic acids-based nanotherapy for alleviation of various disorders.
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Affiliation(s)
- Atul Pathak
- Institute of Genomics and Integrative Biology, Delhi University Campus, Delhi, India
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Zhang J, Luo J, Zhu XX, Junk MJN, Hinderberger D. Molecular pockets derived from cholic acid as chemosensors for metal ions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:2958-2962. [PMID: 19772327 DOI: 10.1021/la9028996] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Molecular pockets in the form of a tripod made of cholic acid were found to be able to solubilize pyrene in polar media as a result of the facial amphiphilicity of bile acids. The trimer containing 1,2,3-triazole groups can complex with heavy metal ions, as clearly shown by electron paramagnetic resonance spectroscopy. Both the metal cation and the pyrene molecule can be brought close together in the cavity formed by the cholic acid trimer, resulting in significantly improved efficiency for fluorescence quenching of pyrene. The decrease of fluorescence intensity can be used for the detection of heavy metal ions, and the detection limit is about 1 microM in water, suggesting the usefulness of such molecules as chemosensors for such metal ions. A different trimer without the coordinating triazole groups is shown to shield pyrene away from metal ions, causing a much reduced fluorescence quenching.
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Affiliation(s)
- Jiawei Zhang
- Département de Chimie, Université de Montréal, C. P. 6128, Succursale Centre-Ville, Montréal, QC, H3C 3J7, Canada
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Wan F, Tang Z, He W, Chu B. A chemistry/physics pathway with nanofibrous scaffolds for gene delivery. Phys Chem Chem Phys 2010; 12:12379-89. [DOI: 10.1039/c002515a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Zhang Q, Cheng SX, Zhang XZ, Zhuo RX. Water Soluble Polymer Protected Lipofectamine 2000/DNA Complexes for Solid-Phase Transfection. Macromol Biosci 2009; 9:1262-71. [DOI: 10.1002/mabi.200900255] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Shcharbin DG, Klajnert B, Bryszewska M. Dendrimers in gene transfection. BIOCHEMISTRY (MOSCOW) 2009; 74:1070-9. [DOI: 10.1134/s0006297909100022] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Shcharbin D, Pedziwiatr E, Blasiak J, Bryszewska M. How to study dendriplexes II: Transfection and cytotoxicity. J Control Release 2009; 141:110-27. [PMID: 19815039 DOI: 10.1016/j.jconrel.2009.09.030] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Accepted: 09/22/2009] [Indexed: 12/23/2022]
Abstract
This paper reviews different techniques for analyzing the transfection efficiencies and cytotoxicities of dendriplexes-complexes of nucleic acids with dendrimers. Analysis shows that three plasmids are mainly used in transfection experiments: plasmid DNA encoding luciferase from the firefly Photinus pyralis, beta-galactosidase, or green fluorescent protein. The effective charge ratio of transfection does not directly correlate with the charge ratio obtained from gel electrophoresis, zeta-potential or ethidium bromide intercalation data. The most popular cells for transfection studies are human embryonic kidney cells (HEK293), mouse embryonic cells (NIH/3T3), SV40 transformed monkey kidney fibroblasts (COS-7) and human epithelioid cervical carcinoma cells (HeLa). Cellular uptake is estimated using fluorescently-labeled dendrimers or nucleic acids. Transfection efficiency is measured by the luciferase reporter assay for luciferase, X-Gal staining or beta-galactosidase assay for beta-galactosidase, and confocal microscopy for green fluorescent protein. Cytotoxicity is determined by the MTT test and lactate dehydrogenase assays. On the basis of the papers reviewed, a standard essential set of techniques for characterizing dendriplexes was constructed: (1) analysis of size and shape of dendriplexes in dried/frozen state by electron or atomic force microscopy; (2) analysis of charge/molar ratio of complexes by gel electrophoresis or ethidium bromide intercalation assay or zeta-potential measurement; (3) analysis of hydrodynamic diameter of dendriplexes in solution by dynamic light scattering. For the evaluation of transfection efficiency the essential techniques are (4) luciferase reporter assay, beta-galactosidase assay or green fluorescent protein microscopy, and (5) cytotoxicity by the MTT test. All these tests allow the transfection efficiencies and cytotoxicities of different kinds of dendrimers to be compared.
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Affiliation(s)
- Dzmitry Shcharbin
- Institute of Biophysics and Cellular Engineering of NASB, Minsk, Belarus.
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Zhang Q, Zhao D, Zhang XZ, Cheng SX, Zhuo RX. Calcium phosphate/DNA co-precipitates encapsulated fast-degrading polymer films for substrate-mediated gene delivery. J Biomed Mater Res B Appl Biomater 2009; 91:172-80. [DOI: 10.1002/jbm.b.31387] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Shcharbin D, Pedziwiatr E, Bryszewska M. How to study dendriplexes I: Characterization. J Control Release 2009; 135:186-97. [DOI: 10.1016/j.jconrel.2009.01.015] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Accepted: 01/23/2009] [Indexed: 10/21/2022]
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Fu HL, Cheng SX, Zhang XZ, Zhuo RX. Dendrimer/DNA complexes encapsulated functional biodegradable polymer for substrate-mediated gene delivery. J Gene Med 2009; 10:1334-42. [PMID: 18816481 DOI: 10.1002/jgm.1258] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND To overcome the extracellular barriers in gene delivery and direct gene delivery to target tissues, substrate-mediated transfection, which sustains the release of naked DNA or vector/DNA complexes, and also supports cell growth, has been developed. METHODS In the present study, polyamidoamine (PAMAM) dendrimer/DNA complexes encapsulated functional biodegradable polymer films for substrate-mediated gene delivery were prepared. To maintain the activity of DNA during dehydration, the dendrimer/DNA complexes were encapsulated in a water soluble polymer, poly alpha,beta-[N-(2-hydroxyethyl)-(L)-aspartamide], and then deposited on or sandwiched in functional polymer films with a fast degradation rate to mediate gene transfection. The in vitro gene transfections of pGL3-Luc and pEGFP-C1 plasmids in HEK293 cells mediated by different films were studied. For comparison, the transfection mediated by the film fabricated by conventional linear poly((DL)-lactide) was also investigated. RESULTS The expression of pGL3-Luc and pEGFP-C1 plasmids could effectively be mediated by the PAMAM/DNA complexes deposited or sandwiched polymer films, with transfection efficiencies comparable to that of solution-based transfections. The cells on the functionalized star poly((DL)-lactide) film exhibited much higher gene expression compared to the cells on the conventional linear poly((DL)-lactide) film because the fast degradation rate of star poly((DL)-lactide) facilitated the access of PAMAM/DNA complexes for the cells seeded on the film. In addition, the films did not exhibit any additional cytotoxicity to the cells during the degradation and transfection. CONCLUSIONS The fast degrading functional polymer has great potential for localized transfection.
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Affiliation(s)
- Hui-Li Fu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, PR China
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Hu CH, Zhang L, Wu DQ, Cheng SX, Zhang XZ, Zhuo RX. Heparin-modified PEI encapsulated in thermosensitive hydrogels for efficient gene delivery and expression. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b817956e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li YQ, Li F, Zhang XZ, Cheng SX, Zhuo RX. Three-dimensional fast-degrading polymer films for delivery of calcium phosphate/DNA co-precipitates in solid-phase transfection. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b906003k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bawarski WE, Chidlowsky E, Bharali DJ, Mousa SA. Emerging nanopharmaceuticals. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2008; 4:273-82. [PMID: 18640076 DOI: 10.1016/j.nano.2008.06.002] [Citation(s) in RCA: 183] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Revised: 05/13/2008] [Accepted: 06/03/2008] [Indexed: 12/31/2022]
Abstract
A budding interest in nanopharmaceuticals has generated a number of advancements throughout recent years with a focus on engineering novel applications. Nanotechnology also offers the ability to detect diseases at much earlier stages, such as finding hidden or overt metastatic colonies often seen in patients diagnosed with breast, lung, colon, prostate, and ovarian cancer. Diagnostic applications could build upon conventional procedures using nanoparticles, such as colloidal gold, iron oxide crystals, and quantum dots. Additionally, diseases may be managed by multifunctional agents encompassing both imaging and therapeutic capabilities, thus allowing simultaneous monitoring and treatment. A detailed evaluation of each formulation is essential to expand our current nanopharmaceutical repertoire. However, the safety and long-term effects of nanoformulations must not be overlooked. This review will provide a brief discussion of the major nanopharmaceutical formulations as well as the impact of nanotechnology into the future.
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Affiliation(s)
- Willie E Bawarski
- Pharmaceutical Research Institute at Albany College of Pharmacy, Rensselaer, New York, USA
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Ryan SM, Mantovani G, Wang X, Haddleton DM, Brayden DJ. Advances in PEGylation of important biotech molecules: delivery aspects. Expert Opin Drug Deliv 2008; 5:371-83. [DOI: 10.1517/17425247.5.4.371] [Citation(s) in RCA: 262] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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