Poly(amidoamine)-based dendrimer/siRNA complexation studied by computer simulations: effects of pH and generation on dendrimer structure and siRNA binding.

Abstract:

:In this work we report, compare and discuss the results obtained from fully atomistic molecular dynamics simulations of generations 4, 5, and 6 of PAMAM-based dendrimers having NH(3) and triethanolamine as cores, forming complexes with a short interfering RNA (siRNA) at different pH values and at physiological ionic strength. By employing a detailed analysis we demonstrate how features such as molecular size, structural details, and protonation level of this category of dendrimers affect the dendrimer/siRNA complexation. Properties like the conformational flexibility of the dendrimer, the effective charge distribution of the assembly, and the level of intra- and intermolecular hydrogen bonding between the two molecular entities are all found to play a significant role in the mutual interactions between the nucleic acid and the hyperbranched molecules. All these features are of key importance in the multifaceted mechanism of dendrimer/gene complexation, and their understanding can provide valuable insight toward the design of more efficient nucleic acid nanocarriers.

journal_name

Macromol Biosci

authors

Karatasos K,Posocco P,Laurini E,Pricl S

doi

10.1002/mabi.201100276

subject

Has Abstract

pub_date

2012-02-01 00:00:00

pages

225-40

issue

2

eissn

1616-5187

issn

1616-5195

journal_volume

12

pub_type

杂志文章
  • Oxidative Epigallocatechin Gallate Coating on Polymeric Substrates for Bone Tissue Regeneration.

    abstract::Plant derived flavonoids have not been well explored in tissue engineering applications due to difficulties in efficient formulations with biomaterials for controlled presentation. Here, the authors report that surface coating of epigallocatechin gallate (EGCG) on polymeric substrates including poly (L-lactic acid) (P...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201800392

    authors: Madhurakkat Perikamana SK,Lee SM,Lee J,Ahmad T,Lee MS,Yang HS,Shin H

    更新日期:2019-04-01 00:00:00

  • Synthesis and characterization of enzymatically degradable PEG-based peptide-containing hydrogels.

    abstract::Biodegradable hydrogels were synthesized by the click reaction of 4-arm azido-terminated PEG differing in molecular weight (2,100 and 8,800) and two alkyne-terminated peptides: [alkyne]-GFLGK-[alkyne] and ([alkyne]-GFLG)(2)K. The physical properties of in situ formed hydrogels were examined. The hydrogels were highly ...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.200900295

    authors: Yang J,Jacobsen MT,Pan H,Kopecek J

    更新日期:2010-04-08 00:00:00

  • Study on Self-Assembled Well-Defined PEG Graft Copolymers as Efficient Drug-Loaded Nanoparticles for Anti-Inflammatory Therapy.

    abstract::The core-shell micelles in aqueous solutions were prepared at low CAC values (<0.1 mg · mL(-1) ) from amphiphilic graft copolymers consisting of poly(methyl methacrylate) backbone (120-165 units) with loosely grafted (17-40%) hydroxyl-capped PEG (9 vs 6 units in side chain) for drug loading. Hydrophobic indomethacin (...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201500189

    authors: Maksym-Bębenek P,Neugebauer D

    更新日期:2015-11-01 00:00:00

  • Thermosensitive "Smart" Surfaces for Biorecognition Based Cell Adhesion and Controlled Detachment.

    abstract::The biorecognition-based control of attachment/detachment of MCF-7 cancer cells from polymer-coated surfaces is demonstrated. A glass surface is coated with a thermoresponsive statistical copolymer of poly(N-isopropylacrylamide-co-acrylamide) [p(NIPAm-co-Am)], which is end-capped with the Gly-Arg-Gly-Asp-Ser (GRGDS) p...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.202000277

    authors: Brunato S,Mastrotto F,Bellato F,Garofalo M,Göddenhenrich T,Mantovani G,Alexander C,Gross S,Salmaso S,Caliceti P

    更新日期:2020-11-04 00:00:00

  • Poly(ethylene glycol) grafting to poly(ether imide) membranes: influence on protein adsorption and thrombocyte adhesion.

    abstract::The chain length and end groups of linear PEG grafted on smooth surfaces is known to influence protein adsorption and thrombocyte adhesion. Here, it is explored whether established structure function relationships can be transferred to application relevant, rough surfaces. Functionalization of poly(ether imide) (PEI) ...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201300309

    authors: Neffe AT,von Ruesten-Lange M,Braune S,Luetzow K,Roch T,Richau K,Jung F,Lendlein A

    更新日期:2013-12-01 00:00:00

  • Long-Term Stable Poly(acrylamide) Brush Modified Transparent Microwells for Cell Attachment Studies in 3D.

    abstract::The fabrication of 3D cell microenvironments exploiting versatile, long-term stable passivating poly(acryl amide) brushes in a microwell format and the study of the behavior of fibroblast and pancreatic tumor cells in wells of systematically varied shape and size is reported. The microwells, which are obtained by comb...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201600451

    authors: Lilge I,Jiang S,Schönherr H

    更新日期:2017-05-01 00:00:00

  • Formation of wheat-protein-based biomaterials through polymer grafting and crosslinking reactions to introduce new functional properties.

    abstract::An insoluble wheat proteins-based polymer networks with new functional groups and positive charges were prepared through grafting-coupling reactions. The networks were also flexible with a lower glass transition temperature since the existence of the grafted mobile segments. The multi-component/multi-phase systems bec...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.200800156

    authors: Kurniawan L,Qiao GG,Zhang X

    更新日期:2009-01-09 00:00:00

  • Novel peptide-shelled dendrimer with dramatically changeable thermo-responsive character.

    abstract::The preparation of a novel peptide/dendrimer hybrid is reported in which an elastin-like oligopeptide is successfully assembled onto a poly(amidoamine) dendrimer surface (G4-ELP), and its unique thermo-responsive behavior is discussed. As a result, the G4-ELP is found to exhibit LCST behavior in the pH range 3-10 incl...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201100509

    authors: Koga T,Iimura M,Higashi N

    更新日期:2012-08-01 00:00:00

  • Micro-engineered 3D scaffolds for cell culture studies.

    abstract::Cells in physiological 3D environments differ considerably in morphology and differentiation from those in 2D tissue culture. Naturally derived polymer systems are frequently used to study cells in 3D. These 3D matrices are complex with respect to their chemical composition, mechanical properties, and geometry. Theref...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章,评审

    doi:10.1002/mabi.201200132

    authors: Greiner AM,Richter B,Bastmeyer M

    更新日期:2012-10-01 00:00:00

  • Novel biodegradable poly(1,8-octanediol malate) for annulus fibrosus regeneration.

    abstract::A novel elastic scaffold that simulates the deformability of annulus fibrosus (AF) and has good biocompatibility was developed. The scaffold was formed of a malic acid-based polyester poly(1,8-octanediol malate) (POM), which was synthesized by direct polycondensation. The tensile strength of POM gradually increased wi...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.200700053

    authors: Wan Y,Feng G,Shen FH,Balian G,Laurencin CT,Li X

    更新日期:2007-11-12 00:00:00

  • Polymersomes from polypeptide containing triblock Co- and terpolymers for drug delivery against pancreatic cancer: asymmetry of the external hydrophilic blocks.

    abstract::Well-defined amphiphilic polymers of the ABA and ABC type are synthesized, where A is poly(L-lysine hydrochloride) (PLL), B is poly(γ-benzyl-(d7) L-glutamate) (PBLG(-d7)), and C is poly(ethylene oxide) (PEO). The two polymers exhibit similar PBLG(-d7) composition, while in the ABC, the volume fraction of PEO block is ...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201400137

    authors: Iatrou H,Dimas K,Gkikas M,Tsimblouli C,Sofianopoulou S

    更新日期:2014-09-01 00:00:00

  • Uniform chitosan microspheres for potential application to colon-specific drug delivery.

    abstract::Uniform chitosan microspheres have been fabricated and weakly crosslinked for potential applications in colon-specific drug delivery. The effects of microsphere size, crosslinking density and electrostatic interactions between the drug and chitosan on drug release were studied, employing model drugs of different acidi...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.200800079

    authors: Choy YB,Cheng F,Choi H,Kim KK

    更新日期:2008-12-08 00:00:00

  • Silk fibroin/gelatin blend films crosslinked with enzymes for biomedical applications.

    abstract::Microbial transglutaminase (mTG) and mushroom tyrosinase (MT) are used to crosslink B. mori silk fibroin/gelatin (SF/G) films. Crosslinked and uncrosslinked SF/G films show no phase separation. The thermal behavior and the conformational structure of SF/G films are strongly affected by blending and enzymatic treatment...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201300156

    authors: Taddei P,Chiono V,Anghileri A,Vozzi G,Freddi G,Ciardelli G

    更新日期:2013-11-01 00:00:00

  • Hybrid polyglycerols with long blood circulation: synthesis, biocompatibility, and biodistribution.

    abstract::Multifunctional polymers with defined structure and biocompatibility are critical to the development of drug delivery systems and bioconjugates. In this article, the synthesis, in vitro blood compatibility, cell viability, in vivo circulation, biodistribution, and clearance of hybrid copolymers based on linear and bra...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201400152

    authors: Imran ul-haq M,Lai BF,Kizhakkedathu JN

    更新日期:2014-10-01 00:00:00

  • Surface modification of PLLA nano-scaffolds with laminin multilayer by LbL assembly for enhancing neurite outgrowth.

    abstract::In this study, PLLA nanofibers are fabricated by electrospinning and their surfaces are modified by laminin/chitosan (LN/CS) polyelectrolyte multilayer. Surface C/N ratio determined by XPS analysis quantitatively indicates of discrete coating layers on the nanofibers. The amount of LN deposited sustainably increases w...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201300177

    authors: He L,Tang S,Prabhakaran MP,Liao S,Tian L,Zhang Y,Xue W,Ramakrishna S

    更新日期:2013-11-01 00:00:00

  • Impact of peptide micropatterning on endothelial cell actin remodeling for cell alignment under shear stress.

    abstract::HSVEC behavior under physiological shear stress in vitro is investigated on PET surfaces micropatterned with both RGDS and WQPPRARI peptides. This technique allows (i) creating geometries on surface to guide cell orientation under shear stress and (ii) controlling surface chemical composition in order to modulate cell...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201200167

    authors: Chollet C,Bareille R,Rémy M,Guignandon A,Bordenave L,Laroche G,Durrieu MC

    更新日期:2012-12-01 00:00:00

  • The Human Embryoid Body Cystic Core Exhibits Architectural Complexity Revealed by use of High Throughput Polymer Microarrays.

    abstract::In pluripotent stem cell differentiation, embryoid bodies (EBs) provide a three-dimensional [3D] multicellular precursor in lineage specification. The internal structure of EBs is not well characterized yet is predicted to be an important parameter to differentiation. Here, we use custom SU-8 molds to generate transpa...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201500051

    authors: Tomov ML,Olmsted ZT,Paluh JL

    更新日期:2015-07-01 00:00:00

  • Green Fabrication of Chitin/Chitosan Composite Hydrogels and Their Potential Applications.

    abstract::Chitin is the second most abundant natural polysaccharide with biocompatibility and bioactivity. Aqueous KOH/urea solution is reported for rapid dissolution of chitin, therefore providing a greener and more efficient avenue to fabricate chitin-based functional materials. Chitosan is the most important derivative of ch...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.202000389

    authors: Xu H,Zhang L,Zhang H,Luo J,Gao X

    更新日期:2021-01-18 00:00:00

  • Mechanical reinforcement of continuous flow spun polyelectrolyte complex fibers.

    abstract::A simple continuous flow wet-spinning method to achieve mechanical reinforcement of the two oppositely charged biopolymers chitosan and gellan gum is described. The mechanical properties of these biopolymers are influenced by the order of addition. Using a facile method for mechanical reinforcement of gellan gum/chito...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.200800257

    authors: Granero AJ,Razal JM,Wallace GG,in het Panhuis M

    更新日期:2009-04-08 00:00:00

  • Influence of satellite groups on telechelic antimicrobial functions of polyoxazolines.

    abstract::The antimicrobial activity of poly(alkyloxazoline) telechelics with one quaternary N,N-dimethyldodecylammonium (DDA) end group was found to be greatly controlled by the non-bioactive distal end group, the so-called satellite group. In systematic investigations, the nature of the latter groups was varied to explore the...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.200400169

    authors: Waschinski CJ,Herdes V,Schueler F,Tiller JC

    更新日期:2005-02-23 00:00:00

  • Efficient encapsulation of plasmid DNA in pH-sensitive PMPC-PDPA polymersomes: study of the effect of PDPA block length on copolymer-DNA binding affinity.

    abstract::We report the self-assembly of a series of amphiphilic diblock copolymers comprising a biocompatible, hydrophilic block, poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) and a pH-sensitive block, poly(2-(diisopropylamino)ethyl methacrylate) (PDPA), into a dispersion of colloidally stable, nanometer-sized polymers...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201000083

    authors: Lomas H,Du J,Canton I,Madsen J,Warren N,Armes SP,Lewis AL,Battaglia G

    更新日期:2010-05-14 00:00:00

  • Functionalized polystyrene nanoparticles trigger human dendritic cell maturation resulting in enhanced CD4+ T cell activation.

    abstract::Nanoparticles (NP) represent a promising tool for biomedical applications. Here, sulfonate- and phosphonate-functionalized polystyrene NP are analyzed for their interaction with human monocyte-derived dendritic cells (DC). Immature dendritic cells (iDC) display a higher time- and dose-dependent uptake of functionalize...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201200223

    authors: Frick SU,Bacher N,Baier G,Mailänder V,Landfester K,Steinbrink K

    更新日期:2012-12-01 00:00:00

  • Amphiphilic Polymethyloxazoline-Polyethyleneimine Copolymers: Interaction with Lipid Bilayer and Antibacterial Properties.

    abstract::Polycations, mimicking activity of antibacterial peptides, belong to an important class of molecules investigated as a support or as an alternative to antibiotics. In this work, studies of modified linear amphiphilic statistical polymethyloxazoline (PMOX) and polyethyleneimine copolymers (PMOX_PEI) series are presente...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201900254

    authors: Kozon D,Mierzejewska J,Kobiela T,Grochowska A,Dudnyk K,Głogowska A,Sobiepanek A,Kuźmińska A,Ciach T,Augustynowicz-Kopeć E,Jańczewski D

    更新日期:2019-12-01 00:00:00

  • Poly(polyol sebacate) Elastomers as Coatings for Metallic Coronary Stents.

    abstract::Biocompatible polymeric coatings for metallic stents are desired, as currently used materials present limitations such as deformation during degradation and exponential loss of mechanical properties after implantation. These concerns, together with the present risks of the drug-eluting stents, namely, thrombosis and r...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201600105

    authors: Navarro L,Mogosanu DE,de Jong T,Bakker AD,Schaubroeck D,Luna J,Rintoul I,Vanfleteren J,Dubruel P

    更新日期:2016-11-01 00:00:00

  • Enzymatic synthesis of poly(α-ethyl β-aspartate) by poly(ethylene glycol) modified poly(aspartate) hydrolase-1.

    abstract::We recently discovered that poly(aspartate) (PAA) hydrolase-1 from Pedobacter sp. KP-2 has a unique property of specifically cleaving the amide bond between β-aspartate units in thermally synthesized PAA (tPAA). In the present study, the enzymatic synthesis of poly(α-ethyl β-aspartate) (β-PAA) was performed by taking ...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201000199

    authors: Hiraishi T,Masuda E,Miyamoto D,Kanayama N,Abe H,Maeda M

    更新日期:2011-02-11 00:00:00

  • Mastoid obliteration using three-dimensional composite scaffolds consisting of polycaprolactone/β-tricalcium phosphate/collagen nanofibers: an in vitro and in vivo study.

    abstract::Two different composite scaffolds, solid-freeform-fabricated PCL/β-TCP supplemented with and without collagen nanofibers are fabricated. These scaffolds are evaluated whether a combination of collagen nanofibers with PCL/β-TCP can promote osteogenesis in a mastoid obliteration. To assess the effects of the cellular ac...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201200393

    authors: Jang CH,Cho YB,Yeo MG,Kim GH

    更新日期:2013-05-01 00:00:00

  • Enhanced efficacy of pluronic copolymer micelle encapsulated SCR7 against cancer cell proliferation.

    abstract::5,6-Bis(benzylideneamino)-2-mercaptopyrimidin-4-ol (SCR7) is a new anti cancer molecule having capability to selectively inhibit non-homologous end joining (NHEJ), one of the DNA double strand break (DSB) repair pathways inside the cells. In spite of the promising potential as an anticancer agent, hydrophobicity of SC...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201400480

    authors: John F,George J,Vartak SV,Srivastava M,Hassan PA,Aswal VK,Karki SS,Raghavan SC

    更新日期:2015-04-01 00:00:00

  • Reduction-sensitive amphiphilic triblock copolymers self-assemble into stimuli-responsive micelles for drug delivery.

    abstract::Polymeric nanostructures obtained through self-assembly of reduction-sensitive amphiphilic triblock copolymers were investigated as potential drug delivery systems. The characteristic feature of these polymers is their cleavable disulfide bond in the center of the hydrophobic block. Therefore, the triblock copolymers ...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201400400

    authors: Toughraï S,Malinova V,Masciadri R,Menon S,Tanner P,Palivan C,Bruns N,Meier W

    更新日期:2015-04-01 00:00:00

  • Characterization of the inhibition of enveloped virus infectivity by the cationic acrylate polymer eudragit E100.

    abstract::The antiviral effects of the cationic acrylate polymer E100 on a panel of lipid-enveloped viruses and the interactions involved are studied. The treatment of several common viruses with E100 induced a dose-dependent inhibition of the infectivity of viruses below the detection limit of the assays employed. Similarly, t...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.200700102

    authors: Alasino RV,Bianco ID,Vitali MS,Zarzur JA,Beltramo DM

    更新日期:2007-09-11 00:00:00

  • Development of Non-Cell Adhesive Vascular Grafts Using Supramolecular Building Blocks.

    abstract::Cell-free approaches to in situ tissue engineering require materials that are mechanically stable and are able to control cell-adhesive behavior upon implantation. Here, the development of mechanically stable grafts with non-cell adhesive properties via a mix-and-match approach using ureido-pyrimidinone (UPy)-modified...

    journal_title:Macromolecular bioscience

    pub_type: 杂志文章

    doi:10.1002/mabi.201500278

    authors: van Almen GC,Talacua H,Ippel BD,Mollet BB,Ramaekers M,Simonet M,Smits AI,Bouten CV,Kluin J,Dankers PY

    更新日期:2016-03-01 00:00:00