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Jonathan B Gilbert et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(17), 6651-6656 (2013-04-10)
Functional organic thin films often demand precise control over the nanometer-level structure. Interlayer diffusion of materials may destroy this precise structure; therefore, a better understanding of when interlayer diffusion occurs and how to control it is needed. X-ray photoelectron spectroscopy
Patrícia Pereira et al.
Journal of colloid and interface science, 387(1), 84-94 (2012-09-18)
The purpose of the present study is to provide a tool for an efficient design and synthesis of non-viral vectors for small RNA delivery. The effects of properties of the polycation, such as molecular weight, charge density and backbone structure
Anna Alhaddad et al.
PloS one, 7(12), e52207-e52207 (2013-01-04)
Small interfering RNAs (siRNAs) are powerful tools commonly used for the specific inhibition of gene expression. However, vectorization is required to facilitate cell penetration and to prevent siRNA degradation by nucleases. We have shown that diamond nanocrystals coated with cationic
Jingguo Li et al.
Chemistry, an Asian journal, 8(2), 385-391 (2012-12-12)
Multimodal imaging and simultaneous therapy is highly desirable because it can provide complementary information from each imaging modality for accurate diagnosis and, at the same time, afford an imaging-guided focused tumor therapy. In this study, indocyanine green (ICG), a near-infrared
Analytical Chemistry, 68, 4186-4186 (1990)
Sanyog Jain et al.
Molecular pharmaceutics, 9(9), 2626-2635 (2012-08-09)
The present study explores the potential of polyelectrolyte-coated liposomes for improving the oral deliverability of doxorubicin (Dox). As a part of formulation strategy, stearyl amine was selected as a formulation component to provide positive charge to liposomes, which were subsequently
Ilaria E Palamà et al.
Journal of drug delivery, 2011, 203676-203676 (2011-08-31)
This pilot study provides the proof of principle for biomedical application of novel polyelectrolyte complexes (PECs) obtained via electrostatic interactions between dextran sulphate (DXS) and poly(allylamine hydrochloride) (PAH). Scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed that DXS/PAH
Salvatore Di Girolamo et al.
Microbial cell factories, 19(1), 170-170 (2020-08-29)
Miniaturization of biochemical reaction volumes within artificial microcompartments has been the key driver for directed evolution of several catalysts in the past two decades. Typically, single cells are co-compartmentalized within water-in-oil emulsion droplets with a fluorogenic substrate whose conversion allows
L Minati et al.
International journal of pharmaceutics, 438(1-2), 45-52 (2012-09-11)
Gold nanoparticles functionalized with doxorubicin and stabilized with multilayers of degradable polyelectrolyte were allowed to age in aqueous medium in vitro in order to show the possibility of drug release in cellular environment. The chemico-physical characteristics of the nanoparticles are
Gengtao Fu et al.
Nanoscale, 5(17), 8007-8014 (2013-07-19)
This paper reports a facile, water-based and one-pot synthesis of tetrahedral Pd nanocrystals (Pd-TNPs) with high yield and good size monodispersity supported on reduced graphene oxide (RGO) nanosheets via a co-chemical reduction method. The key synthetic strategy employed a positively
Yiyao Liu et al.
Expert opinion on drug delivery, 9(10), 1197-1207 (2012-09-27)
Technologies to increase tissue vascularity are critically important to the fields of tissue engineering and cardiovascular medicine. Angiogenic factors, like VEGF, have been widely investigated to induce vascular endothelial cell proliferation and angiogenesis for establishing a vascular network. However, effective
Milana Lisunova et al.
Langmuir : the ACS journal of surfaces and colloids, 28(37), 13345-13353 (2012-08-29)
The patterned template-assisted assembly of the cubic microparticles driven by the competing capillary, Columbic, and van der Waals forces had been studied in comparison with the traditional spherical colloidal microparticles. We observed that the spherical and cubic microparticles assembled with
Irina Marchenko et al.
Journal of controlled release : official journal of the Controlled Release Society, 162(3), 599-605 (2012-08-21)
Enzyme-catalyzed degradation of CaCO₃-templated capsules is presented. We investigate a) biodegradable, b) mixed biodegradable/synthetic, and c) multicompartment polyelectrolyte multilayer capsules with different numbers of polymer layers. Using confocal laser scanning microscopy we observed the kinetics of the non-specific protease Pronase-induced
Marie Krogsgaard et al.
Biomacromolecules, 14(2), 297-301 (2013-01-26)
Self-healing hydrogels can be made using either reversible covalent cross-links or coordination chemistry bonds. Here we present a multi-pH-responsive system inspired by the chemistry of blue mussel adhesive proteins. By attaching DOPA to an amine-functionalized polymer, a multiresponsive system is
Angela Kruth et al.
ChemSusChem, 6(1), 152-159 (2012-11-28)
Visible-light-driven photocatalysis is currently attracting a great deal of attention because of its potential application in solar water splitting. However, the development of efficient and durable catalyst systems is still a challenging problem. In Ru dye-sensitised TiO(2) nanopowders, catalyst performances
René Hedrich et al.
Carbohydrate research, 365, 52-60 (2012-12-12)
Diatoms-unicellular algae with silicified cell walls-have become model organisms for investigations of biomineralization processes. Numerous studies suggest the importance of biosilica-associated or even embedded biomolecules for the biosilica formation. Such molecules are peptides, polyamines, and even saccharides. However, the role
Filtration, adsorption and immunodetection of virus using polyelectrolyte multilayer-modified paper.
Per A Larsson et al.
Colloids and surfaces. B, Biointerfaces, 101, 205-209 (2012-09-27)
A new method for detection of viruses has been developed. The entire assay can be performed within 2h, and consists of a polyelectrolyte-multilayer-modified cellulosic filter paper combined with immunodetection. The M13 bacteriophage was used as a model virus. A visual
Ya Wang et al.
Macromolecular bioscience, 12(10), 1321-1325 (2012-09-12)
Fluorescent-magnetic-biotargeting multifunctional microcapsules (FMBMMs) are designed and fabricated via layer-by-layer assembly. It is found that the arginine-glycine-aspartate-modified FMBMMs were capable of sensitively detecting and efficiently isolating approximately 80% target cancer cells within 20 min. More importantly, FMBMMs present a general
Luca Bardini et al.
Langmuir : the ACS journal of surfaces and colloids, 29(11), 3791-3796 (2013-02-21)
We describe for the first time the electro-oxidative synthesis and passivating properties of surface films of poly(allylamine) and copolymers of allylamine and diallylamine. Cyclic voltammetry and impedance spectra show that the films exhibit high charge-transfer resistance and that the addition
Yancey, S.E. et al
Journal of Applied Physics, 99, 034313-034313 (2006)
Inna Y Stetciura et al.
Langmuir : the ACS journal of surfaces and colloids, 29(12), 4140-4147 (2013-03-09)
Surface-enhanced Raman scattering (SERS) microspectroscopy is a very promising label-free, noncontact, and nondestructive method for real-time monitoring of extracellular matrix (ECM) development and cell integration in scaffolds for tissue engineering. Here, we prepare a new type of micrometer-sized SERS substrate
Ankit Agarwal et al.
Biomaterials, 33(28), 6783-6792 (2012-07-13)
Biologic wound dressings contain animal-derived components and are susceptible to high infection rates. To address this issue, we report an approach that permits incorporation of non-toxic levels of the small molecule antiseptic 'chlorhexidine' into biologic dressings. The approach relies on
Bing Wang et al.
Macromolecular bioscience, 12(11), 1534-1545 (2012-09-26)
The mechanism of the cellular uptake of polyelectrolyte microcapsules and its influences on the functions and toxicity of human SMCs are explored. The covalently assembled poly(allylamine hydrochloride)/glutaraldehyde microcapsules are easily ingested by SMCs mainly through macropinosis and caveolae-mediated endocytosis pathways.
Enyu Zhao et al.
Nanoscale, 4(16), 5102-5109 (2012-07-12)
Cellular uptake, endosomal/lysosomal escape, and the effective dissociation from the carrier are a series of hurdles for specific genes to be delivered both in vitro and in vivo. To construct siRNA delivery systems, poly(allylamine hydrochloride) (PAH) and siRNA were alternately
Magdalena Oćwieja et al.
Langmuir : the ACS journal of surfaces and colloids, 29(11), 3546-3555 (2013-01-17)
Systematic studies of silver particle deposition kinetics under diffusion transport on poly(allylamine hydrochloride) (PAH) modified mica were carried out. Monolayer coverage, quantitatively determined by AFM and SEM, was regulated within broad limits by adjusting the deposition time and the ionic
Xin Gao et al.
International journal of nanomedicine, 7, 4037-4051 (2012-08-14)
We designed dual-functional nanoparticles for in vivo application using a modified electrostatic and covalent layer-by-layer assembly strategy to address the challenge of assessment and treatment of hormone-refractory prostate cancer. Core-shell nanoparticles were formulated by integrating three distinct functional components, ie
Walter J Dressick et al.
Langmuir : the ACS journal of surfaces and colloids, 28(45), 15831-15843 (2012-10-31)
We systematically investigate the effects of divalent anions on the assembly of polyelectrolyte multilayers by fabricating polystyrene sulfonate (PSS)/polyallylamine hydrochloride (PAH) multilayer films from aqueous solutions containing SO(4)(2-), HPO(4)(2-), or organic dicarboxylate dianions. The chosen concentrations of these anions (i.e.
Ryosuke Hashide et al.
Journal of nanoscience and nanotechnology, 14(4), 3100-3105 (2014-04-17)
Poly(lactic acid) (PLA) microparticles were coated with layer-by-layer (LbL) films containing insulin and the pH-dependent release of insulin was studied. The LbL films were prepared on the surface of PLA microparticles by the alternate deposition of insulin and poly(allylamine hydrochloride)
Ilaria E Palamà et al.
Biotechnology and bioengineering, 110(2), 586-596 (2012-08-14)
Alignment of skeletal myoblasts is considered a critical step during myotube formation. The C2C12 cell line is frequently used as a model of skeletal muscle differentiation that can be induced by lowering the serum concentration in standard culture flasks. In
Development and investigation of a dual-pad in-channel referencing surface plasmon resonance sensor.
Qiongjing Zou et al.
Analytical chemistry, 84(18), 7891-7898 (2012-08-29)
Herein, we describe the construction of a novel dual-pad referencing surface plasmon resonance (SPR) sensor utilizing electrolytic grafting of diazonium salts to individually functionalize two gold pads positioned in a single fluidic channel. Using a dove prism, a simple single
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