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 can be cleaved into amphiphilic diblock copolymers. A poly(2-hydroxyethyl methacrylate)-b-poly(butyl methacrylate)-S-S-poly(butyl methacrylate)-b-poly(2-hydroxyethyl methacrylate) (PHEMA-b-(PBMA-S-S-PBMA)-b-PHEMA) triblock copolymer was synthesized. It self-assembled into micelles which were used to encapsulate hydrophobic dye molecules (Nile Red, BodiPy 630/650) as model payloads. The self-assembled nanostructures disintegrated upon reduction of the disulfide bond, releasing their cargo and yielding larger particles that formed aggregates in solution after 24 h. A burst release of payload was shown within the first 15 min, followed by a constant release over several hours. As concentration gradients of reducing agents are commonly found in biological systems, the micelles could be used as redox-sensitive nanocarriers for the intracellular delivery of drugs.
journal_name
Macromol Bioscijournal_title
Macromolecular bioscienceauthors
Toughraï S,Malinova V,Masciadri R,Menon S,Tanner P,Palivan C,Bruns N,Meier Wdoi
10.1002/mabi.201400400subject
Has Abstractpub_date
2015-04-01 00:00:00pages
481-9issue
4eissn
1616-5187issn
1616-5195journal_volume
15pub_type
杂志文章abstract::In the last decade, substantial research in the field of post-plasma grafting surface modification has focussed on the introduction of carboxylic acids on surfaces by grafting acrylic acid (AAc). In the present work, we report on an alternative approach for biomaterial surface functionalisation. Thin poly-ε-caprolacto...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201000147
更新日期:2010-12-08 00:00:00
abstract::A series of enzymatically recyclable poly(ester-urethane)s consisting of a biodegradable diurethane moiety as a hard segment and an ester moiety as an enzymatically cleavable linkage was chemo-enzymatically prepared by two routes. The poly(ester-urethane) was prepared by a) the ring-opening polymerization of a cyclic ...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.200400176
更新日期:2005-04-19 00:00:00
abstract::For use in micro-patterned scaffolds in tissue engineering, novel diacrylated triblock macromers (PLA-b-PCL-b-PLA, PGA-b-PCL-b-PGA and PCL-b-PEO-b-PCL) were synthesized and characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR) and gel permeation chromatography (...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.200300139
更新日期:2004-07-14 00:00:00
abstract::The use of glycopolymer-functionalized resins (Resin-Glc), as a solid support, in column mode for bacterial/protein capture and quantification is explored. The Resin-Glc is synthesized from commercially available chloromethylated polystyrene resin and glycopolymer, and is characterized by fourier transform infrared sp...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.202000342
更新日期:2020-12-18 00:00:00
abstract::Pedobacter sp. KP-2 can degrade and metabolize thermally synthesized alpha,beta-poly(D,L-aspartic acid) (tPAA), which contains 70% of unnatural beta-amide units, with high-molecular-weight. In this study, gene cloning and molecular characterization of PAA hydrolase-1 from KP-2 was carried out. Gene analysis reveals th...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.200800106
更新日期:2009-01-09 00:00:00
abstract::Oligomerization of thiol-unprotected L-cysteine ethyl ester (Cys-OEt) catalyzed by proteinase K in aqueous solution has been used to synthesize oligo(L-cysteine) (OligoCys) with a well-defined chemical structure and relatively large degree of polymerization (DP) up to 16-17 (average 8.8). By using a high concentration...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201500255
更新日期:2016-01-01 00:00:00
abstract::This study describes the development and cell culture application of nanometer thick photocrosslinkable thermoresponsive polymer films prepared by physical adsorption. Two thermoresponsive polymers, poly(N-isopropylacrylamide (NIPAm)-co-acrylamidebenzophenone (AcBzPh)) and poly(NIPAm-co-AcBzPh-co-N-tertbutylacrylamide...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201600175
更新日期:2017-02-01 00:00:00
abstract::The properties of poly(D,L-lactide)-block-poly(2-hydroxyethyl acrylate) (PLA-b-PHEA) block copolymers by means of in vitro / in vivo (rat) degradation are investigated and compared to those of PLA homopolymer. Over 12 weeks, we observe mass loss and molecular weight decrease. In vitro and in vivo findings are very sim...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201100067
更新日期:2011-09-09 00:00:00
abstract::Novel temperature-sensitive poly(N-isopropylacrylamide)/amine-terminated polyamidoamine dendrimer G6-NH2 hydrogels with fast responsive properties were synthesized by forming semi-interpenetrating polymeric networks. In contrast to the conventional PNIPA hydrogel, these new gels showed rapid shrinking rate at the temp...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.200400003
更新日期:2004-06-25 00:00:00
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
更新日期:2012-10-01 00:00:00
abstract::In many industrial applications, inadequate cell attachment can be a limitation, especially when serum-free media are used. Nitrogen-rich plasma-polymerised ethylene (PPE:N) exhibits high concentrations of polar groups that can help to promote the attachment of weakly adherent cell types. Tissue plasminogen activator-...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.200900079
更新日期:2009-10-08 00:00:00
abstract::The next-generation sutures should provide in situ monitoring of wound condition such as temperature while reducing surgical site infection during wound closure. In this study, functionalized nanodiamond (FND) and reduced graphene oxide (rGO) into biodegradable polycaprolactone (PCL) are incorporated to develop a new ...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.202000364
更新日期:2021-01-12 00:00:00
abstract::The repair of large crushed or sectioned segments of peripheral nerves remains a challenge in regenerative medicine due to the complexity of the biological environment and the lack of proper biomaterials and architecture to foster reconstruction. Traditionally such reconstruction is only achieved by using fresh human ...
journal_title:Macromolecular bioscience
pub_type: 杂志文章,评审
doi:10.1002/mabi.201500367
更新日期:2016-04-01 00:00:00
abstract::Traditionally, conductive materials for electrodes are based on high modulus metals or alloys. Development of bioelectrodes that mimic the mechanical properties of the soft, low modulus tissues in which they are implanted is a rapidly expanding field of research. Many polymers exist that more closely match tissue mech...
journal_title:Macromolecular bioscience
pub_type: 杂志文章,评审
doi:10.1002/mabi.201600057
更新日期:2016-08-01 00:00:00
abstract::Several high-resolution imaging techniques such as FESEM, TEM and AFM are compared with respect to their application on alginate hydrogels, a widely used polysaccharide biomaterial. A new AFM method applicable to RGD peptides covalently conjugated to alginate hydrogels is described. High-resolution images of RGD adhes...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.200700313
更新日期:2008-06-11 00:00:00
abstract::Novel block copolymers using the monomers 5-(2-methoxyethyoxymethyl)-5-methyl-[1,3]-dioxa-2-one (TMCM-MOE1OM) as a hydrophilic segment and lactides as a hydrophobic segment were designed in order to prepare controllable degradation polymers by dynamic polymer rearrangement based on the hydrophilicity. When the copolym...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201200143
更新日期:2012-10-01 00:00:00
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
更新日期:2011-02-11 00:00:00
abstract::A facile and easily reproducible technique for assembling biohybrid nanoparticles is a core feature that is highly desired for biomedical applications, considering the nature and limited lifespan of the biopolymers used. Here we show a simple and effective method to enfold single-walled carbon nanotubes (SWNTs) using ...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.200900349
更新日期:2010-03-10 00:00:00
abstract::Stereolithography-assisted fabrication of hydrogels of carboxybetaine methacrylamide (CBMAA) and a α,ω-methacrylate poly(d,l-lactide-block-ethylene glycol-block- d,l-lactide) (MA-PDLLA-PEG-PDLLA-MA) telechelic triblock macromer is presented. This technique allows printing complex structures with gyroid interconnected ...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201800403
更新日期:2019-04-01 00:00:00
abstract::Thermosensitive polymers enable externally controllable biomolecular interactions but hysteresis effects hamper the reversibility and repeated use of these materials. To quantify the temperature-dependent interactions and hysteresis effects, an optical adhesion assay based on poly(ethylene glycol) microgels (soft coll...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.202000186
更新日期:2020-10-01 00:00:00
abstract::Tissue damage caused by excessive amounts of neutrophil-derived reactive oxygen species (ROS) occurs in many inflammatory diseases. Butyrate is a short-chain fatty acid (SCFA) with known anti-inflammatory properties, able to modulate several neutrophil functions. Evidence is provided here that butyrate inhibits neutro...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201700214
更新日期:2017-11-01 00:00:00
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
更新日期:2012-12-01 00:00:00
abstract::Research and development in the design, synthesis, modification, evaluation, and characterization of polysaccharide-based bioactive polymeric materials for guiding and promoting new tissue in-growth is reviewed. Emphasis is given in this interdisciplinary field of tissue engineering (TE) with particular reference to b...
journal_title:Macromolecular bioscience
pub_type: 杂志文章,评审
doi:10.1002/mabi.201200409
更新日期:2013-04-01 00:00:00
abstract::BSA adsorption onto negatively and positively charged polystyrene nanoparticles was investigated. The nanoparticles were characterized in terms of particle size, zeta potential, surface group density, and morphology. The adsorption behavior of BSA on the particle surface, as a function of pH and overall charge of the ...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201000395
更新日期:2011-05-12 00:00:00
abstract::Photo-crosslinking and self-healing have received considerable attention for the design of intelligent materials. A novel photostimulated, self-healing, and cytocompatible hydrogel system is reported. A coumarin methacrylate crosslinker is synthesized to modify the polyacrylamide-based hydrogels. With the [2+2] cyclo-...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201500457
更新日期:2016-09-01 00:00:00
abstract::Basic fibroblast growth factor (bFGF) is an important protein for wound healing and angiogenesis in tissue engineering, but the lack of a viable delivery system hampers its clinical application. This study aims to maintain the long-term controlled release of bFGF by utilizing a collagen/heparin bi-affinity multilayer ...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201800086
更新日期:2018-11-01 00:00:00
abstract::Hydroxypropyl chitosan-graft-carboxymethyl beta-cyclodextrin (HPCH-g-CM beta-CD) was synthesized by grafting CM beta-CD onto HPCH using water soluble 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) as the condensing agent. Due to the presence of hydrophobic beta-CD rings onto the HPCH backbone, this polymer can be...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.200500087
更新日期:2005-10-20 00:00:00
abstract::A hybrid system for producing conducting polymers within a doping hydrogel mesh is presented. These conductive hydrogels demonstrate comparable electroactivity to conventional conducting polymers without requiring the need for mobile doping ions which are typically used in literature. These hybrids have superior mecha...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201100490
更新日期:2012-04-01 00:00:00
abstract::The use of sugar-functionalized polyplexes as a nonviral gene delivery vector with lower cytotoxicity than the well-known polymeric carrier branched polyethyleneimine (BPEI) is investigated. The substitution of primary amine groups in the BPEI chains with lactose residues leads to larger polyplexes, presumably due to ...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201700299
更新日期:2018-02-01 00:00:00
abstract::The aim of this study is to establish the safe and effective ocular delivery system of therapeutic small interfering RNA (siRNA) in corneal neovascularization therapy. The major hurdle present in siRNA-based corneal neovascularization (CNV) therapy is severe cytotoxicity caused by repetitive drug treatment. A reducibl...
journal_title:Macromolecular bioscience
pub_type: 杂志文章
doi:10.1002/mabi.201600051
更新日期:2016-11-01 00:00:00