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Yu QY, Zhan YR, Zhang J, Luan CR, Wang B, Yu XQ. Aromatic Modification of Low Molecular Weight PEI for Enhanced Gene Delivery. Polymers (Basel) 2017; 9:polym9080362. [PMID: 30971039 PMCID: PMC6418655 DOI: 10.3390/polym9080362] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/03/2017] [Accepted: 08/03/2017] [Indexed: 12/16/2022] Open
Abstract
Low molecular weight polyethylenimine (1800 Da, also referred to as oligoethylenimines, OEI) was modified with amino acids, including two aromatic amino acids (tryptophan, phenylalanine) and an aliphatic amino acid (leucine). The substitution degree of amino acids could be controlled by adjusting the feeding mole ratio of the reactants. Fluorescence spectroscopy and circular dichroism experiments demonstrated that the indole ring of tryptophan may intercalate into the DNA base pairs and contribute to efficient DNA condensation. In vitro gene expression results revealed that the modified OEIs (OEI-AAs) may provide higher transfection efficiency even than high molecular weight polyethylenimine (25 kDa, PEI), especially the aromatic tryptophan substituted OEI. Moreover, OEI-AAs exhibited excellent serum tolerance, and up to 137 times higher transfection efficiency than PEI 25 kDa that was obtained in the presence of serum. The cytotoxicity of OEI-AAs is much lower than PEI 25 kDa. This study may afford a new method for the development of low molecular weight oligomeric non-viral gene vectors with both high efficiency and biocompatibility.
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Affiliation(s)
- Qing-Ying Yu
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Yu-Rong Zhan
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Ji Zhang
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Chao-Ran Luan
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Bing Wang
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu 610064, China.
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52
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Avila-Salas F, Pereira A, Rojas MA, Saavedra-Torres M, Montecinos R, Bonardd S, Quezada C, Saldías S, Díaz Díaz D, Leiva A, Radic D, Saldías C. An experimental and theoretical comparative study of the entrapment and release of dexamethasone from micellar and vesicular aggregates of PAMAM-PCL dendrimers. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.06.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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53
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54
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Xu X, Ran Q, Haag R, Ballauff M, Dzubiella J. Charged Dendrimers Revisited: Effective Charge and Surface Potential of Dendritic Polyglycerol Sulfate. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00742] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiao Xu
- Institut
für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Institut
für Physik, Humboldt-Universität zu Berlin, Newtonstr.
15, 12489 Berlin, Germany
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
| | - Qidi Ran
- Institut
für Physik, Humboldt-Universität zu Berlin, Newtonstr.
15, 12489 Berlin, Germany
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Rainer Haag
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Matthias Ballauff
- Institut
für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Institut
für Physik, Humboldt-Universität zu Berlin, Newtonstr.
15, 12489 Berlin, Germany
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
| | - Joachim Dzubiella
- Institut
für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Institut
für Physik, Humboldt-Universität zu Berlin, Newtonstr.
15, 12489 Berlin, Germany
- Multifunctional
Biomaterials for Medicine, Helmholtz Virtual Institute, Kantstr. 55, 14513 Teltow-Seehof, Germany
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55
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Xie LQ, Liu YZ, Xi ZH, Li HY, Liang SD, Zhu KL. Computer simulations of the interaction of fullerene clusters with lipid membranes. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1332410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Li-qiang Xie
- Department of Physics, Gansu Normal University for Nationalities, Hezuo, China
| | - Yong-zhi Liu
- Department of Physics, Gansu Normal University for Nationalities, Hezuo, China
| | - Zhong-hong Xi
- Department of Physics, Gansu Normal University for Nationalities, Hezuo, China
- College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou, China
| | - Hai-yi Li
- Department of Physics, Gansu Normal University for Nationalities, Hezuo, China
| | - Sheng-de Liang
- Department of Physics, Gansu Normal University for Nationalities, Hezuo, China
- Key Laboratory of Modern Acoustics, Ministry of Education, Institute of Acoustics, Nanjing University, Nanjing, China
| | - Kai-li Zhu
- Department of Chemistry, Gansu Normal University for Nationalities, Hezuo, China
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56
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Bazban-Shotorbani S, Hasani-Sadrabadi MM, Karkhaneh A, Serpooshan V, Jacob KI, Moshaverinia A, Mahmoudi M. Revisiting structure-property relationship of pH-responsive polymers for drug delivery applications. J Control Release 2017; 253:46-63. [DOI: 10.1016/j.jconrel.2017.02.021] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 01/23/2017] [Accepted: 02/19/2017] [Indexed: 12/17/2022]
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57
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Du X, Sun Y, Zhang M, He J, Ni P. Polyphosphoester-Camptothecin Prodrug with Reduction-Response Prepared via Michael Addition Polymerization and Click Reaction. ACS APPLIED MATERIALS & INTERFACES 2017; 9:13939-13949. [PMID: 28378998 DOI: 10.1021/acsami.7b02281] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Polyphosphoesters (PPEs), as potential candidates for biocompatible and biodegradable polymers, play an important role in material science. Various synthetic methods have been employed in the preparation of PPEs such as polycondensation, polyaddition, ring-opening polymerization, and olefin metathesis polymerization. In this study, a series of linear PPEs has been prepared via one-step Michael addition polymerization. Subsequently, camptothecin (CPT) derivatives containing disulfide bonds and azido groups were linked onto the side chain of the PPE through Cu(I)-catalyzed azidealkyne cyclo-addition "click" chemistry to yield a reduction-responsive polymeric prodrug P(EAEP-PPA)-g-ss-CPT. The chemical structures were characterized by nuclear magnetic resonance spectroscopy, gel permeation chromatography, Fourier transform infrared, ultraviolet-visible spectrophotometer, and high performance liquid chromatograph analyses, respectively. The amphiphilic prodrug could self-assemble into micelles in aqueous solution. The average particle size and morphology of the prodrug micelles were measured by dynamic light scattering and transmission electron microscopy, respectively. The results of size change under different conditions indicate that the micelles possess a favorable stability in physiological conditions and can be degraded in reductive medium. Moreover, the studies of in vitro drug release behavior confirm the reduction-responsive degradation of the prodrug micelles. A methyl thiazolyl tetrazolium assay verifies the good biocompatibility of P(EAEP-PPA) not only for normal cells, but also for tumor cells. The results of cytotoxicity and the intracellular uptake about prodrug micelles further demonstrate that the prodrug micelles can efficiently release CPT into 4T1 or HepG2 cells to inhibit the cell proliferation. All these results show that the polyphosphoester-based prodrug can be used for triggered drug delivery system in cancer treatment.
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Affiliation(s)
- Xueqiong Du
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University , Suzhou 215123, P. R. China
| | - Yue Sun
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University , Suzhou 215123, P. R. China
| | - Mingzu Zhang
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University , Suzhou 215123, P. R. China
| | - Jinlin He
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University , Suzhou 215123, P. R. China
| | - Peihong Ni
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University , Suzhou 215123, P. R. China
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58
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Qiang X, Wang X, Ji Y, Li S, He L. Liquid-crystal self-assembly of lipid membranes on solutions: A dissipative particle dynamic simulation study. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.03.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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59
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Abstract
Gene therapy is an important therapeutic strategy in the treatment of a wide range of genetic disorders. Polymers forming stable complexes with nucleic acids (NAs) are non-viral gene carriers. The self-assembly of polymers and nucleic acids is typically a complex process that involves many types of interaction at different scales. Electrostatic interaction, hydrophobic interaction, and hydrogen bonds are three important and prevalent interactions in the polymer/nucleic acid system. Electrostatic interactions and hydrogen bonds are the main driving forces for the condensation of nucleic acids, while hydrophobic interactions play a significant role in the cellular uptake and endosomal escape of polymer-nucleic acid complexes. To design high-efficiency polymer candidates for the DNA and siRNA delivery, it is necessary to have a detailed understanding of the interactions between them in solution. In this chapter, we survey the roles of the three important interactions between polymers and nucleic acids during the formation of polyplexes and summarize recent understandings of the linear polyelectrolyte-NA interactions and dendrimer-NA interactions. We also review recent progress optimizing the gene delivery system by tuning these interactions.
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60
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Ziebarth JD, Kennetz DR, Walker NJ, Wang Y. Structural Comparisons of PEI/DNA and PEI/siRNA Complexes Revealed with Molecular Dynamics Simulations. J Phys Chem B 2017; 121:1941-1952. [PMID: 28145711 PMCID: PMC5677264 DOI: 10.1021/acs.jpcb.6b10775] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Polyplexes composed of polyethyleneimine (PEI) and DNA or siRNA have attracted great attention for their use in gene therapy. Although many physicochemical characteristics of these polyplexes remain unknown, PEI/DNA complexes have been repeatedly shown to be more stable than their PEI/siRNA counterparts. Here, we examine potential causes for this difference using atomistic molecular dynamics simulations of complexation between linear PEI and DNA or siRNA duplexes containing the same number of bases. The two types of polyplexes are stabilized by similar interactions, as PEI amines primarily interact with nucleic acid phosphate groups but also occasionally interact with groove atoms of both nucleic acids. However, the number of interactions in PEI/DNA complexes is greater than in comparable PEI/siRNA complexes, with interactions between protonated PEI amines and DNA being particularly enhanced. These results indicate that structural differences between DNA and siRNA may play a role in the increased stability of PEI/DNA complexes. In addition, we investigate the binding of PEI chains to polyplexes that have a net positive charge. The binding of PEI to these overcharged complexes involves interactions between PEI and areas on the nucleic acid surface that have maintained a negative electrostatic potential and is facilitated by the release of water from the nucleic acid.
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Affiliation(s)
- Jesse D Ziebarth
- Department of Chemistry, The University of Memphis , Memphis, Tennessee 38152, United States
| | - Dennis R Kennetz
- Department of Chemistry, The University of Memphis , Memphis, Tennessee 38152, United States
| | - Nyles J Walker
- Department of Chemistry, The University of Memphis , Memphis, Tennessee 38152, United States
| | - Yongmei Wang
- Department of Chemistry, The University of Memphis , Memphis, Tennessee 38152, United States
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61
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Wang H, Huang Q, Chang H, Xiao J, Cheng Y. Stimuli-responsive dendrimers in drug delivery. Biomater Sci 2017; 4:375-90. [PMID: 26806314 DOI: 10.1039/c5bm00532a] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Dendrimers have shown great promise as carriers in drug delivery due to their unique structures and superior properties. However, the precise control of payload release from a dendrimer matrix still presents a great challenge. Stimuli-responsive dendrimers that release payloads in response to a specific trigger could offer distinct clinical advantages over those dendrimers that release payloads passively. These smart polymers are designed to specifically release their payloads at targeted regions or at constant release profiles for specific therapies. They represent an attractive alternative to targeted dendrimers and enable dendrimer-based therapeutics to be more effective, more convenient, and much safer. The wide range of stimuli, either endogenous (acid, enzyme, and redox potentials) or exogenous (light, ultrasound, and temperature change), allows great flexibility in the design of stimuli-responsive dendrimers. In this review article, we will highlight recent advances and opportunities in the development of stimuli-responsive dendrimers for the treatment of various diseases, with emphasis on cancer. Specifically, the applications of stimuli-responsive dendrimers in drug delivery as well as their mechanisms are intensively reviewed.
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Affiliation(s)
- Hui Wang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, PR China. and Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China.
| | - Quan Huang
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China.
| | - Hong Chang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, PR China.
| | - Jianru Xiao
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China.
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, PR China.
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62
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Duan X, Zhang Y, Li L, Zhang R, Ding M, Huang Q, Xu WS, Shi T, An L. Effects of Concentration and Ionization Degree of Anchoring Cationic Polymers on the Lateral Heterogeneity of Anionic Lipid Monolayers. J Phys Chem B 2017; 121:984-994. [DOI: 10.1021/acs.jpcb.6b12386] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaozheng Duan
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Yang Zhang
- Northeast Normal University, Changchun 130024, P. R. China
| | - Liangyi Li
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Ran Zhang
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Mingming Ding
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Qingrong Huang
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901, United States
| | - Wen-Sheng Xu
- James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - Tongfei Shi
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Lijia An
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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63
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Tang R, Zhou S, Cheng Z, Yu G, Peng Q, Zeng H, Guo G, Li Q, Li Z. Janus second-order nonlinear optical dendrimers: their controllable molecular topology and corresponding largely enhanced performance. Chem Sci 2017; 8:340-347. [PMID: 28451178 PMCID: PMC5365064 DOI: 10.1039/c6sc02956f] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 08/11/2016] [Indexed: 12/12/2022] Open
Abstract
A new type of Janus dendrimers, consisting of two different side dendrons with the dipole orientation of the second-order nonlinear optical (NLO) chromophore moieties partially in a non-centrosymmetric direction, was intelligently designed and synthesized in order to enhance the macroscopic NLO performance and break through the limitation of NLO efficiency in the current molecular topological structure of azo chromophore-based polymers. This kind of Janus dendritic structure was constructed by the combination of convergent and divergent methods, with the utilization of a powerful "click chemistry reaction". The obtained three dendrimers, D-13N, D-17N and D-21N, show very high NLO performance, especially the dramatically enhanced NLO coefficient of 299 pm V-1 for D-13N, which is the highest value ever reported for polymers containing a simple azo chromophore. The new dendrimers provide a clear structure-properties relationship between high NLO efficiency and the controllable molecular topology with the non-centrosymmetrical alignment of dipole orientation, thus opening up a new avenue for the further development of NLO dendrimers with high performance and more importantly providing some clues for the rational design of functional dendrimers with controllable molecular topology.
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Affiliation(s)
- Runli Tang
- Department of Chemistry , Wuhan University , Wuhan 430072 , China .
| | - Shengmin Zhou
- Department of Chemistry , Wuhan University , Wuhan 430072 , China .
| | - Ziyao Cheng
- Department of Chemistry , Wuhan University , Wuhan 430072 , China .
| | - Gui Yu
- Institute of Chemistry , The Chinese Academy of Sciences , Beijing 100080 , China
| | - Qian Peng
- Institute of Chemistry , The Chinese Academy of Sciences , Beijing 100080 , China
| | - Huiyi Zeng
- Fujian Institute of Research on the Structure of Matter , The Chinese Academy of Sciences , Fuzhou 350002 , China
| | - Guocong Guo
- Fujian Institute of Research on the Structure of Matter , The Chinese Academy of Sciences , Fuzhou 350002 , China
| | - Qianqian Li
- Department of Chemistry , Wuhan University , Wuhan 430072 , China .
| | - Zhen Li
- Department of Chemistry , Wuhan University , Wuhan 430072 , China .
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64
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Jorge AF, Nunes SC, Cova TF, Pais AA. Cooperative action in DNA condensation. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.09.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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65
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Wang M, Cheng Y. Structure-activity relationships of fluorinated dendrimers in DNA and siRNA delivery. Acta Biomater 2016; 46:204-210. [PMID: 27662807 DOI: 10.1016/j.actbio.2016.09.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 09/05/2016] [Accepted: 09/19/2016] [Indexed: 12/25/2022]
Abstract
Fluorinated dendrimers have shown great promise in gene delivery due to their high transfection efficacy and low cytotoxicity, however, the structure-activity relationships of these polymers still remain unknown. Herein, we synthesized a library of fluorinated dendrimers with different dendrimer generations and fluorination degrees and investigated their behaviors in both DNA and siRNA delivery. The results show that fluorination significantly improves the transfection efficacy of G4-G7 polyamidoamine dendrimers in DNA and siRNA delivery. Fluorination on generation 5 dendrimer yields the most efficient polymers in gene delivery, and the transfection efficacy of fluorinated dendrimers depends on fluorination degree. All the fluorinated dendrimers cause minimal toxicity on the transfected cells at their optimal transfection conditions. This study provides a general and facile strategy to prepare high efficient and low cytotoxic gene carriers based on fluorinated polymers. STATEMENT OF SIGNIFICANCE The structure-activity relationships of fluorinated dendrimers in gene delivery is still unknown and the behavior of fluorinated dendrimers in siRNA delivery has not yet been investigated. Herein, we synthesized a library of fluorinated PAMAM dendrimers with different dendrimer generations and fluorination degrees and investigated their behaviors in both DNA and siRNA delivery. The results clearly indicate that fluorination significantly improves the transfection efficacy of dendrimers in both DNA and siRNA delivery without causing additional toxicity. G5 PAMAM dendrimer is best scaffold to synthesize fluorinated dendrimers and the transfection efficacy of fluorinated dendrimers depends on fluorination degree. This systematic study provides a general and facile strategy to prepare high efficient and low cytotoxic gene carriers based on fluorinated polymers.
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Affiliation(s)
- Mingming Wang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, People's Republic of China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, People's Republic of China.
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66
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Yang QH, Luo MB. Dynamics of adsorbed polymers on attractive homogeneous surfaces. Sci Rep 2016; 6:37156. [PMID: 27849002 PMCID: PMC5111053 DOI: 10.1038/srep37156] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 10/25/2016] [Indexed: 02/07/2023] Open
Abstract
Dynamic behaviors of polymer chains adsorbed on an attractive, homogeneous surface are studied by using dynamic Monte Carlo simulations. The translational diffusion coefficient Dxy parallel to the surface decreases as the intra-polymer attraction strength EPP or the polymer-surface attraction strength EPS increases. The rotational relaxation time τR increases with EPS, but the dependence of τR on EPP is dependent on the adsorption state of the polymer. We find that τR decreases with increasing EPP for a partially adsorbed polymer but it increases with EPP for a fully adsorbed polymer. Scaling relations Dxy ~ N−α and τR ~ Nβ are found for long polymers. The scaling exponent α is independent of EPS for long polymers but increases with EPP from α = 1.06 at EPP = 0. While β ≈ 2.7 is also roughly independent of EPS for the adsorbed polymer at EPP = 0, but β increases with EPS at EPP > 0. Moreover, we find that β always decreases with increasing EPP. Our results reveal different effects of the attractive surface on the diffusion and rotation of adsorbed polymers.
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Affiliation(s)
- Qing-Hui Yang
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - Meng-Bo Luo
- Department of Physics, Zhejiang University, Hangzhou 310027, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing, China
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67
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68
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Filipe LCS, Machuqueiro M, Darbre T, Baptista AM. Exploring the Structural Properties of Positively Charged Peptide Dendrimers. J Phys Chem B 2016; 120:11323-11330. [PMID: 27739676 DOI: 10.1021/acs.jpcb.6b09156] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report a combined experimental and computational approach to study the structural behavior of positively charged peptide dendrimers. Third-generation dendrimers containing combinations of positive/neutral amino acid residues in the different dendrimer generations were synthesized and their overall size evaluated using diffusion NMR. Molecular dynamics simulations were performed to obtain a comprehensive description of the molecular-level phenomena substantiating the structural differences observed. Comparison of the results presented with previous findings reveals a striking charge-dependent tendency in these systems, where the simple number and placement of charged amino acids in the sequence allows an extensive control over the exhibited structural features. Indeed, we observe that peptide dendrimers bearing progressively higher amounts of charged residues are characterized by an increasing structural plasticity, with a myriad of conformational states equally accessible to them. On the other hand, dendrimers containing only small amounts of charged residues evidence, to some extent, a characteristic structural rigidity.
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Affiliation(s)
- Luís C S Filipe
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Av. da República, EAN, 2780-157 Oeiras, Portugal
| | - Miguel Machuqueiro
- Centro de Química e Bioquímica and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa , 1749-016 Lisboa, Portugal
| | - Tamis Darbre
- Department of Chemistry and Biochemistry, University of Bern , Freiestrasse 3, 3012 Bern, Switzerland
| | - António M Baptista
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Av. da República, EAN, 2780-157 Oeiras, Portugal
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69
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Hsu PC, Jefferies D, Khalid S. Molecular Dynamics Simulations Predict the Pathways via Which Pristine Fullerenes Penetrate Bacterial Membranes. J Phys Chem B 2016; 120:11170-11179. [DOI: 10.1021/acs.jpcb.6b06615] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pin-Chia Hsu
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, U.K
| | - Damien Jefferies
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, U.K
| | - Syma Khalid
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, U.K
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70
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Kostritskii AY, Kondinskaia DA, Nesterenko AM, Gurtovenko AA. Adsorption of Synthetic Cationic Polymers on Model Phospholipid Membranes: Insight from Atomic-Scale Molecular Dynamics Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10402-10414. [PMID: 27642663 DOI: 10.1021/acs.langmuir.6b02593] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Although synthetic cationic polymers represent a promising class of effective antibacterial agents, the molecular mechanisms behind their antimicrobial activity remain poorly understood. To this end, we employ atomic-scale molecular dynamics simulations to explore adsorption of several linear cationic polymers of different chemical structure and protonation (polyallylamine (PAA), polyethylenimine (PEI), polyvinylamine (PVA), and poly-l-lysine (PLL)) on model bacterial membranes (4:1 mixture of zwitterionic phosphatidylethanolamine (PE) and anionic phosphatidylglycerol (PG) lipids). Overall, our findings show that binding of polycations to the anionic membrane surface effectively neutralizes its charge, leading to the reorientation of water molecules close to the lipid/water interface and to the partial release of counterions to the water phase. In certain cases, one has even an overcharging of the membrane, which was shown to be a cooperative effect of polymer charges and lipid counterions. Protonated amine groups of polycations are found to interact preferably with head groups of anionic lipids, giving rise to formation of hydrogen bonds and to a noticeable lateral immobilization of the lipids. While all the above findings are mostly defined by the overall charge of a polymer, we found that the polymer architecture also matters. In particular, PVA and PEI are able to accumulate anionic PG lipids on the membrane surface, leading to lipid segregation. In turn, PLL whose charge twice exceeds charges of PVA/PEI does not induce such lipid segregation due to its considerably less compact architecture and relatively long side chains. We also show that partitioning of a polycation into the lipid/water interface is an interplay between its protonation level (the overall charge) and hydrophobicity of the backbone. Therefore, a possible strategy in creating highly efficient antimicrobial polymeric agents could be in tuning these polycation's properties through proper combination of protonated and hydrophobic blocks.
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Affiliation(s)
- Andrei Yu Kostritskii
- Faculty of Physics, St. Petersburg State University , Ulyanovskaya str. 3, Petrodvorets, St. Petersburg 198504 Russia
| | - Diana A Kondinskaia
- Faculty of Physics, St. Petersburg State University , Ulyanovskaya str. 3, Petrodvorets, St. Petersburg 198504 Russia
| | - Alexey M Nesterenko
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University , Moscow 119991 Russia
| | - Andrey A Gurtovenko
- Faculty of Physics, St. Petersburg State University , Ulyanovskaya str. 3, Petrodvorets, St. Petersburg 198504 Russia
- Institute of Macromolecular Compounds, Russian Academy of Sciences , Bolshoi Prospect V.O. 31, St. Petersburg 199004 Russia
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71
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Jain V, Maiti PK, Bharatam PV. Atomic level insights into realistic molecular models of dendrimer-drug complexes through MD simulations. J Chem Phys 2016; 145:124902. [DOI: 10.1063/1.4962582] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Vaibhav Jain
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, Mohali, Punjab 160 062, India
| | - Prabal K. Maiti
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560 012, India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, Mohali, Punjab 160 062, India
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72
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He XC, Qu ZG, Xu F. Simulation study of interaction mechanism between peptide and asymmetric membrane. MOLECULAR SIMULATION 2016. [DOI: 10.1080/08927022.2016.1228105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- X. C. He
- Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, P.R. China
| | - Z. G. Qu
- Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, P.R. China
| | - F. Xu
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, P.R. China
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, P.R. China
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73
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Filipe LCS, Campos SRR, Machuqueiro M, Darbre T, Baptista AM. Structuring Peptide Dendrimers through pH Modulation and Substrate Binding. J Phys Chem B 2016; 120:10138-10152. [DOI: 10.1021/acs.jpcb.6b05905] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luís C. S. Filipe
- Instituto
de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal
| | - Sara R. R. Campos
- Instituto
de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal
| | - Miguel Machuqueiro
- Centro
de Química e Bioquímica and Departamento de Química
e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Tamis Darbre
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, 3012 Bern, Switzerland
| | - António M. Baptista
- Instituto
de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal
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74
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Cooper BM, Putnam D. Polymers for siRNA Delivery: A Critical Assessment of Current Technology Prospects for Clinical Application. ACS Biomater Sci Eng 2016; 2:1837-1850. [PMID: 33440520 DOI: 10.1021/acsbiomaterials.6b00363] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The number of polymer-based vectors for siRNA delivery in clinical trials lags behind other delivery strategies; however, the molecular architectures and chemical compositions available to polymers make them attractive candidates for further exploration. Polymer vectors are extensively investigated in academic laboratories worldwide with fundamental progress having recently been made in the areas of high-throughput screening, synthetic methods, cellular internalization, endosomal escape and computational prediction and analysis. This review assesses recent advances within the field and highlights relevant developments from within the complementary fields of nanotechnology and protein chemistry with the intent to propose future work that addresses key gaps within the current body of knowledge, potentially advancing the development of the next generation of polymeric vectors.
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Affiliation(s)
- Bailey M Cooper
- Meinig School of Biomedical Engineering and ‡Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - David Putnam
- Meinig School of Biomedical Engineering and Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
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75
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Yang QH, Wu F, Wang Q, Luo MB. Simulation study on the coil-globule transition of adsorbed polymers. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24149] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qing-Hui Yang
- Department of Physics; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Fan Wu
- Department of Physics; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Qi Wang
- Department of Physics; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Meng-Bo Luo
- Department of Physics; Zhejiang University; Hangzhou 310027 People's Republic of China
- Collaborative Innovation Department of Advanced Microstructures; Nanjing People's Republic of China
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76
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Tang R, Li Z. Second-Order Nonlinear Optical Dendrimers and Dendronized Hyperbranched Polymers. CHEM REC 2016; 17:71-89. [DOI: 10.1002/tcr.201600065] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Runli Tang
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials; Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
| | - Zhen Li
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials; Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
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77
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Pandit A, Zeugolis DI. Structured substrates and delivery vehicles: trending now in biomedicine. Nanomedicine (Lond) 2016; 11:1489-93. [PMID: 27353654 DOI: 10.2217/nnm.16.47] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Abhay Pandit
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Dimitrios I Zeugolis
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland.,Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
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78
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Duan X, Zhang Y, Zhang R, Ding M, Shi T, An L, Huang Q, Xu WS. Spatial Rearrangement and Mobility Heterogeneity of an Anionic Lipid Monolayer Induced by the Anchoring of Cationic Semiflexible Polymer Chains. Polymers (Basel) 2016; 8:polym8060235. [PMID: 30979330 PMCID: PMC6432547 DOI: 10.3390/polym8060235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/08/2016] [Accepted: 06/13/2016] [Indexed: 01/19/2023] Open
Abstract
We use Monte Carlo simulations to investigate the interactions between cationic semiflexible polymer chains and a model fluid lipid monolayer composed of charge-neutral phosphatidyl-choline (PC), tetravalent anionic phosphatidylinositol 4,5-bisphosphate (PIP₂), and univalent anionic phosphatidylserine (PS) lipids. In particular, we explore how chain rigidity and polymer concentration influence the spatial rearrangement and mobility heterogeneity of the monolayer under the conditions where the cationic polymers anchor on the monolayer. We find that the anchored cationic polymers only sequester the tetravalent PIP₂ lipids at low polymer concentrations, where the interaction strength between the polymers and the monolayer exhibits a non-monotonic dependence on the degree of chain rigidity. Specifically, maximal anchoring occurs at low polymer concentrations, when the polymer chains have an intermediate degree of rigidity, for which the PIP₂ clustering becomes most enhanced and the mobility of the polymer/PIP₂ complexes becomes most reduced. On the other hand, at sufficiently high polymer concentrations, the anchoring strength decreases monotonically as the chains stiffen-a result that arises from the pronounced competitions among polymer chains. In this case, the flexible polymers can confine all PIP₂ lipids and further sequester the univalent PS lipids, whereas the stiffer polymers tend to partially dissociate from the monolayer and only sequester smaller PIP₂ clusters with greater mobilities. We further illustrate that the mobility gradient of the single PIP₂ lipids in the sequestered clusters is sensitively modulated by the cooperative effects between anchored segments of the polymers with different rigidities. Our work thus demonstrates that the rigidity and concentration of anchored polymers are both important parameters for tuning the regulation of anionic lipids.
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Affiliation(s)
- Xiaozheng Duan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Yang Zhang
- School of Business, Northeast Normal University, Changchun 130024, China.
| | - Ran Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Mingming Ding
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Tongfei Shi
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Lijia An
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Qingrong Huang
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, USA.
| | - Wen-Sheng Xu
- James Franck Institute, The University of Chicago, Chicago, IL 60637, USA.
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79
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Shimizu K, Nakamura H, Watano S. MD simulation study of direct permeation of a nanoparticle across the cell membrane under an external electric field. NANOSCALE 2016; 8:11897-11906. [PMID: 27241464 DOI: 10.1039/c6nr02051h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nanoparticles (NPs) have been attracting much attention for biomedical and pharmaceutical applications. In most of the applications, NPs are required to translocate across the cell membrane and to reach the cell cytosol. Experimental studies have reported that by applying an electric field NPs can directly permeate across the cell membrane without the confinement of NPs by endocytic vesicles. However, damage to the cell can often be a concern. Understanding of the mechanism underlying the direct permeation of NPs under an external electric field can greatly contribute to the realization of a technology for the direct delivery of NPs. Here we investigated the permeation of a cationic gold NP across a phospholipid bilayer under an external electric field using a coarse-grained molecular dynamics simulation. When an external electric field that is equal to the membrane breakdown intensity was applied, a typical NP delivery by electroporation was shown: the cationic gold NP directly permeated across a lipid bilayer without membrane wrapping of the NP, while a persistent transmembrane pore was formed. However, when a specific range of the electric field that is lower than the membrane breakdown intensity was applied, a unique permeation pathway was exhibited: the generated transmembrane pore immediately resealed after the direct permeation of NP. Furthermore, we found that the affinity of the NP for the membrane surface is a key for the self-resealing of the pore. Our finding suggests that by applying an electric field in a suitable range NPs can be directly delivered into the cell with less cellular damage.
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Affiliation(s)
- Kenta Shimizu
- Department of Chemical Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
| | - Hideya Nakamura
- Department of Chemical Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
| | - Satoru Watano
- Department of Chemical Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
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80
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DFT investigation of the interaction of gold nanoclusters with poly(amidoamine) PAMAM G0 dendrimer. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.05.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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81
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Freire JJ, Rubio AM, McBride C. Calculation of Conformational Properties and Rouse Relaxation Times of PAMAM-EDA Dendrimers under Different pH Conditions. MACROMOL THEOR SIMUL 2016. [DOI: 10.1002/mats.201600012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Juan J. Freire
- Departamento de Ciencias y Técnicas Fisicoquímicas; Facultad de Ciencias; Universidad Nacional de Educación a Distancia (UNED); Paseo Senda del Rey 9 28040 Madrid Spain
| | - Ana M. Rubio
- Departamento de Química Física; Facultad de Ciencias Químicas; Universidad Complutense; Ciudad Universitaria; 28040 Madrid Spain
| | - Carl McBride
- Departamento de Ciencias y Técnicas Fisicoquímicas; Facultad de Ciencias; Universidad Nacional de Educación a Distancia (UNED); Paseo Senda del Rey 9 28040 Madrid Spain
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82
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Tailoring the dendrimer core for efficient gene delivery. Acta Biomater 2016; 35:1-11. [PMID: 26923528 DOI: 10.1016/j.actbio.2016.02.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/16/2016] [Accepted: 02/22/2016] [Indexed: 01/01/2023]
Abstract
Dendrimers have been widely used as non-viral gene vectors due to well-defined chemical structures, high density of cationic charges and ease of surface modification. Although a large number of studies have reported the important roles of dendrimer architecture, component, generation and surface functionality in gene delivery, the effect of dendrimer core on this issue still remains unclear. Recent literatures suggest that a slight alternation in dendrimer core has a profound effect in the transfection efficacy and biocompatibility. In this review, we will discuss the transfection mechanism of dendrimers with different types of cores in respect of flexibility, hydrophobicity and functionality. We hope to open a possibility of designing efficient dendrimers for gene delivery by choosing a proper dendrimer core. STATEMENT OF SIGNIFICANCE As a branch of researches on dendrimers and dendritic polymers, the design of biocompatible and high efficient polymeric gene carriers has attracted increasing attentions during these years. Although the effect of dendrimer generation, species, architecture and surface functionality on gene delivery have been widely reported, the effect of dendrimer core on this issue still remains unclear. Recent literatures suggest that a minor variation on the dendrimer core has a profound effect in the transfection efficacy and biocompatibility. This critical review summarized the dendrimers with different types of cores and discussed the transfection mechanism with particular focus on the flexibility, hydrophobicity, and functionality. It is hoped to provide a new insight to design efficient and safe dendrimer-based gene vectors by choosing a proper core. To the best of our knowledge, this is the first review on the effect of dendrimer core on gene delivery. The findings obtained in this filed are of central importance in the design of efficient polymeric gene vectors. This article will appeal a wide readership such as physical chemist, dendrimer chemist, biological chemist, pharmaceutical scientist, and biomaterial researchers. We hope that this review article can be published by Acta Biomaterialia, a top journal that publishes important reviews in the field of biomaterials science.
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83
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Liang J, Chen P, Dong B, Huang Z, Zhao K, Yan LT. Ligand-Receptor Interaction-Mediated Transmembrane Transport of Dendrimer-like Soft Nanoparticles: Mechanisms and Complicated Diffusive Dynamics. Biomacromolecules 2016; 17:1834-44. [PMID: 27049403 DOI: 10.1021/acs.biomac.6b00241] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nearly all nanomedical applications of dendrimer-like soft nanoparticles rely on the functionality of attached ligands. Understanding how the ligands interact with the receptors in cell membrane and its further effect on the cellular uptake of dendrimer-like soft nanoparticles is thereby a key issue for their better application in nanomedicine. However, the essential mechanism and detailed kinetics for the ligand-receptor interaction-mediated transmembrane transport of such unconventional nanoparticles remain poorly elucidated. Here, using coarse-grained simulations, we present the very first study of molecular mechanism and kinetics behaviors for the transmembrane transport of dendrimer-like soft nanoparticles conjugated with ligands. A phase diagram of interaction states is constructed through examining ligand densities and membrane tensions that allows us to identify novel endocytosis mechanisms featured by the direct wrapping and the penetration-extraction vesiculation. The results provide an in-depth insight into the diffusivity of receptors and dendrimer in the membrane plane and demonstrate how the ligand density influences receptor diffusion and uptake kinetics. It is interesting to find that the ligand-conjugated dendrimers present superdiffusive behaviors on a membrane, which is revealed to be driven by the random fluctuation dynamics of the membrane. The findings facilitate our understanding of some recent experimental observations and could establish fundamental principles for the future development of such important nanomaterials for widespread nanomedical applications.
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Affiliation(s)
- Junshi Liang
- Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University , Beijing 100084, P. R. China
| | - Pengyu Chen
- Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University , Beijing 100084, P. R. China
| | - Bojun Dong
- Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University , Beijing 100084, P. R. China
| | - Zihan Huang
- Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University , Beijing 100084, P. R. China
| | - Kongyin Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University , Tianjin 300387, China
| | - Li-Tang Yan
- Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University , Beijing 100084, P. R. China
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84
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Smeijers AF, Markvoort AJ, Pieterse K, Hilbers PAJ. Coarse-grained simulations of poly(propylene imine) dendrimers in solution. J Chem Phys 2016; 144:074903. [DOI: 10.1063/1.4941379] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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85
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Wang F, Deng L, Hu J, Cheng Y. Being Two Is Better than Being One: A Facile Strategy to Fabricate Multicomponent Nanoparticles for Efficient Gene Delivery. Bioconjug Chem 2016; 27:638-46. [DOI: 10.1021/acs.bioconjchem.5b00643] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Wang
- Shanghai
Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
- Shanghai
Key Laboratory for Bone and Joint Diseases, Shanghai Institute of
Traumatology and Orthopaedics, Shanghai Ruijin Hospital, School of
Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Lianfu Deng
- Shanghai
Key Laboratory for Bone and Joint Diseases, Shanghai Institute of
Traumatology and Orthopaedics, Shanghai Ruijin Hospital, School of
Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Jingjing Hu
- Shanghai
Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yiyun Cheng
- Shanghai
Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
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86
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Yu C, Ma L, Li K, Li S, Liu Y, Zhou Y, Yan D. Molecular dynamics simulation studies of hyperbranched polyglycerols and their encapsulation behaviors of small drug molecules. Phys Chem Chem Phys 2016; 18:22446-57. [DOI: 10.1039/c6cp03726g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computer simulation could disclose more details about the conformations of HPGs and their encapsulation behaviors of guest molecules.
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Affiliation(s)
- Chunyang Yu
- School of Chemistry & Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Li Ma
- School of Chemistry & Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Ke Li
- School of Chemistry & Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Shanlong Li
- School of Chemistry & Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Yannan Liu
- School of Chemistry & Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Yongfeng Zhou
- School of Chemistry & Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Deyue Yan
- School of Chemistry & Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
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87
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Zhao Y, Zeng Q, Wu F, Li J, Pan Z, Shen P, Yang L, Xu T, Cai L, Guo L. Novel naproxen-peptide-conjugated amphiphilic dendrimer self-assembly micelles for targeting drug delivery to osteosarcoma cells. RSC Adv 2016. [DOI: 10.1039/c6ra15022e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The aim of the current study was to synthesize and prepare novel self-assembly micelles loaded with curcumin (Cur) based on naproxen (Nap)-conjugated amphiphilic peptide dendrimers.
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88
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Han Y, Qian Y, Zhou X, Hu H, Liu X, Zhou Z, Tang J, Shen Y. Facile synthesis of zwitterionic polyglycerol dendrimers with a β-cyclodextrin core as MRI contrast agent carriers. Polym Chem 2016. [DOI: 10.1039/c6py01404f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A facile synthesis method of a zwitterionic polyglycerol dendrimer was developed, providing an ideal carrier for drug and imaging probe delivery.
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Affiliation(s)
- Yuxin Han
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Center for Bionanoengineering
- and College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
| | - Yue Qian
- Department of Radiology
- Sir Run Run Shaw Hospital (SRRSH) of School of Medicine
- Zhejiang University
- Hangzhou
- China
| | - Xiaoxuan Zhou
- Department of Radiology
- Sir Run Run Shaw Hospital (SRRSH) of School of Medicine
- Zhejiang University
- Hangzhou
- China
| | - Hongjie Hu
- Department of Radiology
- Sir Run Run Shaw Hospital (SRRSH) of School of Medicine
- Zhejiang University
- Hangzhou
- China
| | - Xiangrui Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Center for Bionanoengineering
- and College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
| | - Zhuxian Zhou
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Center for Bionanoengineering
- and College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
| | - Jianbin Tang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Center for Bionanoengineering
- and College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
| | - Youqing Shen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Center for Bionanoengineering
- and College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
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89
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Lin B, Liu L, Zhang S, Huang J, He F, Qi M. From vesicles to micelles: microphase separation of amphiphilic dendrimer copolymers in a selective solvent. SOFT MATTER 2015; 11:8801-8811. [PMID: 26394064 DOI: 10.1039/c5sm01329a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The microphase separation of amphiphilic dendrimer copolymers in a selective solvent with different excluded volume effects (αS) is investigated using three-dimensional real space self-consistent field theory. The morphological transition of disorder-to-order and order-to-order is observed by systematically regulating the excluded volume effect parameter, interaction parameter of block species, and the spacer length of the second generation of the dendrimer. The ordered segregates of the dendrimer solution are observed with a stronger excluded volume effect due to the strong depletion effect of solvent on the dendrimer. The relative magnitude between hydrophobic block B and hydrophilic block C is very important for microphase separation: when they are equal (NB = NC), a structural shift from vesicles to micelles has been found upon increasing the interaction parameter, and the region of disordered morphology is controlled by the interfacial free energy (Uint); when NB > NC, the vesicular morphologies overwhelmingly appear in the ordered region and then NC increases to close to NB, and the ordered aggregates take a shift from vesicles to micelles. Furthermore, the amphiphilic block C of the dendrimer is intended to enlarge to NC > NB, the micellar morphology is dominant in the ordered regime with a stronger excluded volume effect, which contributes to the decrease in the hydrophobic block repulsion that is affected by the decrease in the entropic free energy (-TS). The knowledge obtained from the microphase separation of dendrimer solution induced by the excluded volume effect of selective solvent is full of referential significance in understanding the morphological transition from vesicles to micelles for the amphiphile in the field of soft matter.
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Affiliation(s)
- Bo Lin
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China.
| | - Lan Liu
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China.
| | - Shijie Zhang
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China.
| | - Junzuo Huang
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China.
| | - Fuan He
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China.
| | - Minhua Qi
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China.
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90
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Wang H, Wei H, Huang Q, Liu H, Hu J, Cheng Y, Xiao J. Nucleobase-modified dendrimers as nonviral vectors for efficient and low cytotoxic gene delivery. Colloids Surf B Biointerfaces 2015; 136:1148-55. [DOI: 10.1016/j.colsurfb.2015.11.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 10/10/2015] [Accepted: 11/07/2015] [Indexed: 12/30/2022]
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91
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Caminade AM, Hameau A, Majoral JP. The specific functionalization of cyclotriphosphazene for the synthesis of smart dendrimers. Dalton Trans 2015; 45:1810-22. [PMID: 26525036 DOI: 10.1039/c5dt03047a] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hexachlorocyclotriphosphazene is an old compound which affords very new properties in the field of dendrimers. Indeed, it can be used as a branching point for the rapid synthesis of highly dense dendrimers, but also for the synthesis of dendrimers having precisely one function different from all the others. These types of dendrimers are useful in the field of materials, affording highly reusable catalysts, chemical sensors, or supports for cell cultures. However, the most developed uses concern fluorescence. These dendrimers have been used for in vivo imaging, and for trying to elucidate biological mechanisms, in particular for anti-inflammatory dendrimers. This review will display important examples in the field.
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Affiliation(s)
- Anne-Marie Caminade
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France.
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92
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Kanchi S, Suresh G, Priyakumar UD, Ayappa KG, Maiti PK. Molecular Dynamics Study of the Structure, Flexibility, and Hydrophilicity of PETIM Dendrimers: A Comparison with PAMAM Dendrimers. J Phys Chem B 2015; 119:12990-3001. [DOI: 10.1021/acs.jpcb.5b07124] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Subbarao Kanchi
- Center
for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore, 560012, India
- Department
of Chemical Engineering, Center for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Gorle Suresh
- Center
for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, 500032, India
| | - U. Deva Priyakumar
- Center
for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, 500032, India
| | - K. G. Ayappa
- Department
of Chemical Engineering, Center for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Prabal K Maiti
- Center
for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore, 560012, India
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93
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Lai LL, Hsieh JW, Chang YH, Kuo MY, Cheng KL, Liu SH, Lee JJ, Hsu HF. An Unconventional Approach to Induce Liquid-Crystalline Phases of Triazine-Based Dendrons by Breaking Their Self-Assembly into Dimers. Chemistry 2015; 21:13336-43. [PMID: 26332231 DOI: 10.1002/chem.201501743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Indexed: 02/04/2023]
Abstract
Three triazine-based dendrons (1 a-c) were successfully prepared in 70-83 % yields. These newly prepared dendrons are found to be liquid crystalline (LC). Computational investigations on molecular conformations and dipoles of triazine-based dendrons reveal that the substituent on the central triazine unit interrupts strong dipole or H-bond interactions to avoid dimeric formation. The obtained dendrons, not favouring self-assembly into dimers but showing LC behaviours, provides evidence for an approach contrary to the conventional method of inducing LC behaviours of dendrons by dimer or trimer formation, mostly through H-bond interactions.
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Affiliation(s)
- Long-Li Lai
- Department of Applied Chemistry, National Chi Nan University, No.1 University Rd., Puli, Nantou, Taiwan 545 (Taiwan).
| | - Jei-Way Hsieh
- Department of Applied Chemistry, National Chi Nan University, No.1 University Rd., Puli, Nantou, Taiwan 545 (Taiwan)
| | - Yung-Hao Chang
- Department of Applied Chemistry, National Chi Nan University, No.1 University Rd., Puli, Nantou, Taiwan 545 (Taiwan)
| | - Ming-Yu Kuo
- Department of Applied Chemistry, National Chi Nan University, No.1 University Rd., Puli, Nantou, Taiwan 545 (Taiwan)
| | - Kung-Lung Cheng
- Material and Chemical Research Laboratories, Industrial Research Institute, Hsinchu, Taiwan 300 (Taiwan)
| | - Shih-Hsien Liu
- Material and Chemical Research Laboratories, Industrial Research Institute, Hsinchu, Taiwan 300 (Taiwan)
| | - Jey-Jau Lee
- No.101 Hsin-Ann Rd., HsinChu Science Park, Hsinchu, Taiwan 300 (Taiwan)
| | - Hsiu-Fu Hsu
- Department of Chemistry, Tamkang University, Tamsui, Taiwan 251 (Taiwan).
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94
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Bugno J, Hsu HJ, Hong S. Recent advances in targeted drug delivery approaches using dendritic polymers. Biomater Sci 2015; 3:1025-34. [PMID: 26221937 PMCID: PMC4519693 DOI: 10.1039/c4bm00351a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Since they were first synthesized over 30 years ago, dendrimers have seen rapid translation into various biomedical applications. A number of reports have not only demonstrated their clinical utility, but also revealed novel design approaches and strategies based on the elucidation of underlying mechanisms governing their biological interactions. This review focuses on presenting the latest advances in dendrimer design, discussing the current mechanistic understandings, and highlighting recent developments and targeted approaches using dendrimers in drug/gene delivery.
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Affiliation(s)
- Jason Bugno
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, IL 60612, USA.
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95
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Freire JJ, Rubio AM, McBride C. Coarse-Grained and Atomistic Simulations for theG = 4 PAMAM-EDA Dendrimer. MACROMOL THEOR SIMUL 2015. [DOI: 10.1002/mats.201500028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Juan J. Freire
- Departamento de Ciencias y Técnicas Fisicoquímicas, Facultad de Ciencias; Universidad Nacional de Educación a Distancia; Paseo Senda del Rey 9 28040 Madrid Spain
| | - Ana M. Rubio
- Departamento de Química Física, Facultad de Ciencias Químicas; Universidad Complutense; 28040 Madrid Spain
| | - Carl McBride
- Departamento de Ciencias y Técnicas Fisicoquímicas, Facultad de Ciencias; Universidad Nacional de Educación a Distancia; Paseo Senda del Rey 9 28040 Madrid Spain
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96
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Bellini RG, Guimarães AP, Pacheco MAC, Dias DM, Furtado VR, de Alencastro RB, Horta BAC. Association of the anti-tuberculosis drug rifampicin with a PAMAM dendrimer. J Mol Graph Model 2015; 60:34-42. [PMID: 26093506 DOI: 10.1016/j.jmgm.2015.05.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 05/03/2015] [Accepted: 05/22/2015] [Indexed: 12/19/2022]
Abstract
The association of the anti-tuberculosis drug rifampicin (RIF) with a 4th-generation poly(amidoamine) (G4-PAMAM) dendrimer was investigated by means of molecular dynamics simulations. The RIF load capacity was estimated to be around 20 RIF per G4-PAMAM at neutral pH. The complex formed by 20 RIF molecules and the dendrimer (RIF20-PAMAM) was subjected to 100 ns molecular dynamics (MD) simulations at two different pH conditions (neutral and acidic). The complex was found to be significantly more stable in the simulation at neutral pH compared to the simulation at low pH in which the RIF molecules were rapidly and almost simultaneously expelled to the solvent bulk. The high stability of the RIF-PAMAM complex under physiological pH and the rapid release of RIF molecules under acidic medium provide an interesting switch for drug targeting since the Mycobacterium resides within acidic domains of the macrophage. Altogether, these results suggest that, at least in terms of stability and pH-dependent release, PAMAM-like dendrimers may be considered suitable drug delivery systems for RIF and derivatives.
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Affiliation(s)
| | - Ana P Guimarães
- Departamento de Química, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Marco A C Pacheco
- Departamento de Engenharia Elétrica, PUC-Rio, Rio de Janeiro, Brazil
| | - Douglas M Dias
- Departamento de Engenharia Elétrica, PUC-Rio, Rio de Janeiro, Brazil
| | - Vanessa R Furtado
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Bruno A C Horta
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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97
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Lind TK, Darré L, Domene C, Urbanczyk-Lipkowska Z, Cárdenas M, Wacklin HP. Antimicrobial peptide dendrimer interacts with phosphocholine membranes in a fluidity dependent manner: A neutron reflection study combined with molecular dynamics simulations. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:2075-84. [PMID: 26025586 DOI: 10.1016/j.bbamem.2015.05.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 04/20/2015] [Accepted: 05/20/2015] [Indexed: 10/23/2022]
Abstract
The interaction mechanism of a novel amphiphilic antimicrobial peptide dendrimer, BALY, with model lipid bilayers was explored through a combination of neutron reflection and molecular dynamics simulations. 1-Palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) and 1,2-dipalmitoyl-sn-glycero-3-phos-phocholine (DPPC) lipid bilayers were examined at room temperature to extract information on the interaction of BALY with fluid and gel phases, respectively. Furthermore, a 1:4 mixture of POPC and DPPC was used as a model of a phase-separated membrane. Upon interaction with fluid membranes, BALY inserted in the distal leaflet and caused thinning and disordering of the headgroups. Membrane thinning and expansion of the lipid cross-sectional area were observed for gel phase membranes, also with limited insertion to the distal leaflet. However, dendrimer insertion through the entire lipid tail region was observed upon crossing the lipid phase transition temperature of DPPC and in phase separated membranes. The results show clear differences in the interaction mechanism of the dendrimer depending on the lipid membrane fluidity, and suggest a role for lipid phase separation in promoting its antimicrobial activity.
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Affiliation(s)
- T K Lind
- Institute of Chemistry and Nano-Science Center, University of Copenhagen, Universitetsparken 5, DK 2100 Copenhagen, Denmark; European Spallation Source ESS AB, P.O. Box 176, 22100 Lund, Sweden
| | - L Darré
- Department of Chemistry, King's College London, London SE1 9NH, UK
| | - C Domene
- Department of Chemistry, King's College London, London SE1 9NH, UK; Chemistry Research Laboratory, Mansfield Road, University of Oxford, Oxford OX1 3TA, UK
| | | | - M Cárdenas
- Institute of Chemistry and Nano-Science Center, University of Copenhagen, Universitetsparken 5, DK 2100 Copenhagen, Denmark; Malmoe University, Health & Society, 20506 Malmoe, Sweden.
| | - H P Wacklin
- Institute of Chemistry and Nano-Science Center, University of Copenhagen, Universitetsparken 5, DK 2100 Copenhagen, Denmark; European Spallation Source ESS AB, P.O. Box 176, 22100 Lund, Sweden.
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98
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Yang J, Zhang Q, Chang H, Cheng Y. Surface-Engineered Dendrimers in Gene Delivery. Chem Rev 2015; 115:5274-300. [DOI: 10.1021/cr500542t] [Citation(s) in RCA: 307] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jiepin Yang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Qiang Zhang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Hong Chang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Yiyun Cheng
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
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99
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Ding HM, Ma YQ. Theoretical and computational investigations of nanoparticle-biomembrane interactions in cellular delivery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1055-71. [PMID: 25387905 DOI: 10.1002/smll.201401943] [Citation(s) in RCA: 190] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/05/2014] [Indexed: 05/18/2023]
Abstract
With the rapid development of nanotechnology, nanoparticles have been widely used in many applications such as phototherapy, cell imaging, and drug/gene delivery. A better understanding of how nanoparticles interact with bio-system (especially cells) is of great importance for their potential biomedical applications. In this review, the current status and perspective of theoretical and computational investigations is presented on the nanoparticle-biomembrane interactions in cellular delivery. In particular, the determining parameters (including the properties of nanoparticles, cell membranes and environments) that govern the cellular uptake of nanoparticles (direct penetration and endocytosis) are discussed. Further, some special attention is paid to their interactions beyond the translocation of nanoparticles across membranes (e.g., nanoparticles escaping from endosome and entering into nucleus). Finally, a summary is given, and the challenging problems of this field in the future are identified.
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Affiliation(s)
- Hong-ming Ding
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China
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100
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Das AK, Hsiao PY. Charged dendrimers under the action of AC electric fields: breathing characteristics of molecular size, polarizations, and ion distributions. J Chem Phys 2015; 142:084902. [PMID: 25725752 DOI: 10.1063/1.4908563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Langevin dynamics simulations are performed to study the response of charged dendrimers in alternating current electric fields in 3:1 salt solutions. Time evolutions of molecular size show breathing characteristics which take saw-tooth-like patterns in square-wave electric fields and undulated sine-function ones in sine-wave fields. Detailed study reveals how the dendrimer and condensed ions oscillate in the electric fields, which result in polarization of the molecule. To effect a significant deformation of the dendrimer, the applied field amplitude must be larger than some critical strength Ecrit and the field frequency smaller than a threshold fcrit. The response behavior is characterized by two relaxation times in square-wave fields, both of which decrease linearly with the strong field strength larger than Ecrit. In sine-wave fields, the molecular size exhibits interesting hysteretic behavior in plotting the curves with the field variation. A Maxwell-Wagner type polarization theory is derived and proved by simulations, which connects fcrit with the strength of the applied electric field.
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Affiliation(s)
- Ashok K Das
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Pai-Yi Hsiao
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan
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