Macromolecular Bioscience

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Early View (Online Version of Record published before inclusion in an issue)

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  1. 1 - 41
  1. Full Papers

    1. Multi-Technique Characterization of Poly-L-lysine Dendrigrafts–Cu(II) Complexes for Biocatalysis

      Jean-Christophe Rossi, Barbara Maret, Kevin Vidot, Jean-Patrick Francoia, Michela Cangiotti, Susanna Lucchi, Concetta Coppola and Maria Francesca Ottaviani

      Article first published online: 20 OCT 2014 | DOI: 10.1002/mabi.201400341

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      Significant structural features of poly-L-lysine dendrigrafts (DGLs) – Cu(II) complexes are characterized to implement the use of these complexes as biocatalysts. The agreement and complementarity among EPR, potentiometric titration, UV-Vis and CD measurements provide an exhaustive view of the Cu(II)-DGL complexation behavior as a function of DGL generation, relative concentrations, and pH.

  2. Feature Articles

    1. Thermoresponsive Nanodevices in Biomedical Applications

      Julián Bergueiro and Marcelo Calderón

      Article first published online: 16 OCT 2014 | DOI: 10.1002/mabi.201400362

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      Thermoresponsive nanodevices are one of the most promising systems in nanomedicine. Due to new building blocks, a number of promising smart systems have been rapidly developed in response to the needs of nanomedicine. This article reviews the innovations in this field from the last four years.

  3. Full Papers

    1. Blending of Diblock and Triblock Copolypeptide Amphiphiles Yields Cell Penetrating Vesicles with Low Toxicity

      April R. Rodriguez, Uh-Joo Choe, Daniel T. Kamei and Timothy J. Deming

      Article first published online: 16 OCT 2014 | DOI: 10.1002/mabi.201400348

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      Diblock and triblock copolypeptides were blended to form vesicle populations with uniform compositions. Mixing of cationic and non-ionic amphiphiles in these vesicles gave optimized properties of good cellular uptake while maintaining minimal cytotoxicity. Copolypeptide mixing is a promising strategy to provide useful functionality without requiring the use of complicated synthesis procedures.

    2. Glycosylated Star Polypeptides from NCA Polymerization: Selective Binding as a Function of Degree of Branching and Glycosylation

      Mark Byrne, Robert Mildner, Henning Menzel and Andreas Heise

      Article first published online: 15 OCT 2014 | DOI: 10.1002/mabi.201400371

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      Poly(glutamic acid) star polymers with up to 64 arms were synthesized via N-carboxy-anhydride (NCA) polymerization from dendritic initiators. Glycosylation afforded star-shaped glyco- peptides with varying degrees of sugar conjugation. The secondary structure and the ability to selectively bind to lectin ConA was found to be dependent on sugar content and polymer structure, respectively.

    3. Porous Polylactic Acid–Silica Hybrids: Preparation, Characterization, and Study of Mesenchymal Stem Cell Osteogenic Differentiation

      Christos Pandis, Sara Trujillo, Joana Matos, Sara Madeira, Joaquín Ródenas-Rochina, Sotiria Kripotou, Apostolos Kyritsis, João F. Mano and José Luis Gómez Ribelles

      Article first published online: 10 OCT 2014 | DOI: 10.1002/mabi.201400339

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      Polymer/silica porous hybrids are prepared by a novel strategy using sol–gel reactions inside the pores of polylactic acid (PLA) membranes. The link between organic and inorganic phase is achieved by functionalizing PLA and using glycidoxypropyltrimethoxysilane (GPTMS) as coupling agent. The adjustment of silica precursors ratio allows modifying the thermomechanical properties. The proliferation and osteoblastic differentiation potential is studied.

    4. Biocompatible, Biodegradable and Porous Liquid Crystal Elastomer Scaffolds for Spatial Cell Cultures

      Anshul Sharma, Abdollah Neshat, Cory J. Mahnen, Alek d. Nielsen, Jacob Snyder, Tory L. Stankovich, Benjamin G. Daum, Emily M. LaSpina, Gabrielle Beltrano, Yunxiang Gao, Shuo Li, Byung-Woo Park, Robert J. Clements, Ernest J. Freeman, Christopher Malcuit, Jennifer A. McDonough, LaShanda T. J. Korley, Torsten Hegmann and Elda Hegmann

      Article first published online: 10 OCT 2014 | DOI: 10.1002/mabi.201400325

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      A new trick for LC elastomers: Biocompatible, biodegradable and porous liquid crystal (LC) elastomers were used for the first time as viable, soft scaffolds for cell growth and proliferation in a spatial (3D) fashion.

    5. Microcellular Open Porous Monoliths for Cell Growth by Thiol-Ene Polymerization of Low-Toxicity Monomers in High Internal Phase Emulsions

      Maja Sušec, Robert Liska, Günter Russmüller, Jiři Kotek and Peter Krajnc

      Article first published online: 8 OCT 2014 | DOI: 10.1002/mabi.201400219

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      Combination of high internal phase emulsion templating and thiol-ene polymerization of vinyl esters and thiols produced highly porous polymers with an interconnected morphology and tunable pore size. Usefulness of novel material is demonstrated by application as a scaffold for in vitro osteoblasts growth.

  4. Reviews

    1. Tissue-Engineered Cartilage: The Crossroads of Biomaterials, Cells and Stimulating Factors

      Nandana Bhardwaj, Dipali Devi and Biman B. Mandal

      Article first published online: 3 OCT 2014 | DOI: 10.1002/mabi.201400335

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      Over the years, cartilage tissue engineering is growing by leaps and bounds. Not only are various biomaterials being opted for repair, but newer methodologies being invented. With an aim to present an overview of current progress, we have summed up the advances and problems in cartilage regeneration with strong emphasis on material types, cells, stimulating factors and culture conditions.

  5. Full Papers

    1. Adsorption of Fibronectin on Salt-Etched Polyelectrolyte Multilayers and its Roles in Mediating the Adhesion and Migration of Vascular Smooth Muscle Cells

      Jun Deng, Mingcong Sun, Shasha Wang, Lulu Han, Zhengwei Mao, Dan Li, Hong Chen and Changyou Gao

      Article first published online: 3 OCT 2014 | DOI: 10.1002/mabi.201400344

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      The adsorption of fibronectin (Fn) and the adhesion and migration of vascular smooth muscle cells (VSMCs) are characterized and correlated on salt-treated PEI(PSS/PDDA)7 multilayers. The swelling properties and surface charge of the salt-treated multilayers jointly govern the adsorption manner, conformation, and activity of Fn, which in turn contribute heavily to the adhesion, spreading, and migration of VSMCs.

    2. New Semi-Biodegradable Materials from Semi-Interpenetrated Networks of Poly(ϵ-caprolactone) and Poly(ethyl acrylate)

      P. Lozano Picazo, M. Pérez Garnes, C. Martínez Ramos, A. Vallés-Lluch and M. Monleón Pradas

      Article first published online: 30 SEP 2014 | DOI: 10.1002/mabi.201400331

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      Semi-degradable materials may have find applications. Poly-(ethyl acrylate) and poly(ϵ-caprolactone) are here combined as semi-IPNs. Materials are obatined which combine their outstanding biological properties and possess mechanical properties tunable in a wide range of moduli. The behavior of fibroblasts and adipose-tissue-derived stem cells on these new materials is studied.

    3. Revisiting Complexation between DNA and Polyethylenimine: Does the Disulfide Linkage Play a Critical Role in Promoting Gene Delivery?

      Yongzheng Ma, Baizhu Chen, Ning He, Gaojian Chen, Lianwei Li and Chi Wu

      Article first published online: 29 SEP 2014 | DOI: 10.1002/mabi.201400253

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      To improve transfection efficiency and lower cytotoxicity, disulfide bonds have been applied in gene vectors. However, the disulfide bonds may not play an important role in promoting gene delivery, but do extend the chain length. A long free PEI chain could efficiently protect DNA from degradation, so that more DNA is transported into the nucleus.

    4. A Cancer-Recognizing Polymeric Photosensitizer Based on the Tumor Extracellular pH Response of Conjugated Polymers for Targeted Cancer Photodynamic Therapy

      Songhee Jeong, Wooram Park, Chung-Sung Lee and Kun Na

      Article first published online: 24 SEP 2014 | DOI: 10.1002/mabi.201400361

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      A cancer-recognizing polymeric photosensitizer (CRPP) for targeted photodynamic cancer therapy is developed through a facile synthetic process. The newly synthesized CRPP is capable of reversing its charge from negative to positive at the tumor extracellular pH (pHe, pH ∼6.5) to facilitate cellular internalization, which can lead to enhanced therapeutic efficacy against tumor cells.

    5. Sulfated Hyaluronan Influences the Formation of Artificial Extracellular Matrices and the Adhesion of Osteogenic Cells

      Alina Miron, Sandra Rother, Linda Huebner, Ute Hempel, Iris Käppler, Stephanie Moeller, Matthias Schnabelrauch, Dieter Scharnweber and Vera Hintze

      Article first published online: 12 SEP 2014 | DOI: 10.1002/mabi.201400292

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      The presence of sulfated glycosaminoglycans (GAG), like sulfated hyaluronan derivatives and chondroitin sulfate, during in vitro-fibrillogenesis of collagen type I alters the structure of the resulting artificial extracellular matrices. Besides, the GAG amount associated to collagen increases in a sulfation-dependent manner. Moreover, GAG sulfation influences the cytoskeletal arrangement of SaOS-2 cells which implies that adhesion-related intracellular signaling is affected.

    6. pH-Responsive Single Walled Carbon Nanotube Dispersion for Target Specific Release of Doxorubicin to Cancer Cells

      Moumita Ghosh, Sayanti Brahmachari and Prasanta Kumar Das

      Article first published online: 11 SEP 2014 | DOI: 10.1002/mabi.201400290

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      pH Responsive cholesterol based dipeptide carboxylates were synthesized as efficient dispersing agents for SWNTs in water. These highly dispersed nanotubes were used for the uploading of anticancer drug doxorubicin. The nanohybrid showed excellent pH responsive drug release at the extracellular tumorogenic environmental pH (6.0–6.5) and selectively kills cancer cells.

    7. Liposomal Drug Deposits in Poly(Dopamine) Coatings: Effect of Their Composition, Cell Type, Uptake Pathway Considerations, and Shear Stress

      Martin E. Lynge, Marina Fernandez-Medina, Almar Postma and Brigitte Städler

      Article first published online: 11 SEP 2014 | DOI: 10.1002/mabi.201400350

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      Different types of liposome-containing poly(dopamine)-based films were assembled and their interaction with adhering cells was assessed. The internalization of cargo was not affected by the presence of lipophilic dopamine conjugates in the lipid membrane but by the charge of the liposomes. Clathrin-mediated endocytosis was identified as uptake pathway. Shear stress had an impact on the interaction of adhering endothelial cells with the composite films.

    8. Sprayed Cells and Polyelectrolyte Films for Biomaterial Functionalization: The Influence of Physical PLL–PGA Film Treatments on Dental Pulp Cell Behavior

      Ivan V. Panayotov, Pierre-Yves Collart-Dutilleul, Hamideh Salehi, Marta Martin, Attila Végh, Jacques Yachouh, Boyan Vladimirov, Péter Sipos, Balázs Szalontai, Csilla Gergely and Frédéric J. G. Cuisinier

      Article first published online: 11 SEP 2014 | DOI: 10.1002/mabi.201400256

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      A good manufacturing practice (GMP)-compliant spraying method is described for the buildup of polyelectro-lyte multilayer (PEM) films constructed by poly-L-lysine (PLL) and poly-glutamic acid (PGA), onto which dental pulp cells are also deposited by spraying. The prepared PEM films were exposed to UV irradiation and drying/re-hydrating cycle. This procedure renders the films thicker, rougher and stiffer, enhancing dental pulp cell adhesion and proliferation.

    9. Bamboo Leaf-Like Micro-Nano Sheets Self-Assembled by Block Copolymers as Wafers for Cells

      Wen Zhu, Bo Peng, Jing Wang, Ke Zhang, Lixin Liu and Yongming Chen

      Article first published online: 10 SEP 2014 | DOI: 10.1002/mabi.201400283

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      Bamboo leaf-like micro-nano sheets are prepared via crystallization-driven self-assembly of poly(ethylene oxide)-b-poly(ϵ-caprolactone). The preparation is quite convenient within 1 h. These polymer sheets look like wafers for cells, and they do display a selective internalization to different cells. The macrophages show great interest in the wafers.

    10. Cell Motility on Polyethylene Glycol Block Copolymers Correlates to Fibronectin Surface Adsorption

      Peter J. F. Röttgermann, Samira Hertrich, Ida Berts, Max Albert, Felix J. Segerer, Jean-François Moulin, Bert Nickel and Joachim O. Rädler

      Article first published online: 10 SEP 2014 | DOI: 10.1002/mabi.201400246

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      Cell morphology and motility on artificial surfaces can be controlled by different degrees of surface PEGylations. Here, fibronectin incubation in three different PEG block copolymers is analyzed via neutron reflectivity. Fibronectin adsorbs in the vicinity of the PLL layer. The amount of fibronectin in the polymer layer is correlated to cell spreading and motility.

    11. Decomposition and Transformation of Pyrene-Derivative Micelles at Intracellular Milieu and Their Influence on Cytoviability

      Haisheng Wang, Wei Yu, Wenbo Zhang and Changyou Gao

      Article first published online: 10 SEP 2014 | DOI: 10.1002/mabi.201400338

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      Amphiphilic pyrene-containing random copolymers with pH-sensitive hydrazone bonds are synthesized. Spherical hydrolysable micelles formed by the amphiphilic copolymers at pH 6 are transformed into nanorods due to cleavage of the hydrazone bonds. The shape transformation is observed in pH 5.5 PBS too. The hydrolysable micelles cause higher toxicity to A549 cells than the non-hydrolysable ones without shape transformation.

    12. Preparation and Bioimaging Applications of AIE Dye Cross-linked Luminescent Polymeric Nanoparticles

      Meiying Liu, Xiqi Zhang, Bin Yang, Fengjie Deng, Yang Yang, Zhen Li, Xiaoyong Zhang and Yen Wei

      Article first published online: 8 SEP 2014 | DOI: 10.1002/mabi.201400262

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      We demonstrate that red luminescent polymeric nanoparticles can be prepared via combination of free radical polymerization and a ring-opening reaction using aggregation-induced emission dye as cross-linker. The good water dispersibility, size, enhanced fluorescence intensity, and excellent biocompatibility that these luminescent polymeric nanoparticles exhibit gives them good potential for biological imaging applications.

  6. Communications

    1. Collagen Surfaces Modified with Photo-Cleavable Polyethylene Glycol-Lipid Support Versatile Single-Cell Arrays of Both Non-adherent and Adherent Cells

      Shinya Yamahira, Satoshi Yamaguchi, Masahiro Kawahara and Teruyuki Nagamune

      Article first published online: 5 SEP 2014 | DOI: 10.1002/mabi.201400312

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      A smart-material surface for simply and rapidly preparing versatile single-cell arrays of both non-adherent and adherent cells was designed and constructed based on a photo-cleavable polyethylene glycol (PEG)-lipid. Two high-throughput image analysis applications were demonstrated on these PEG-lipid-based single cell arrays. In addition, extremely densely-packed single-cell arrays were successfully constructed.

  7. Full Papers

    1. In Vitro Synergistic Action of Geldanamycin- and Docetaxel-Containing HPMA Copolymer–RGDfK Conjugates Against Ovarian Cancer

      Nate Larson, Sarah Roberts, Abhijit Ray, Brandon Buckway, Darwin L. Cheney and Hamidreza Ghandehari

      Article first published online: 4 SEP 2014 | DOI: 10.1002/mabi.201400360

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      In vitro evaluation of combination therapy utilizing HPMA copolymer–RGDfK conjugates. Aminohexylgeldanamycin conjugates are more stable and exhibit slower drug release than docetaxel conjugates. Both conjugates demonstrate binding specifically to αvβ3 integrins. HPMA copolymer–RGDfK conjugates bearing aminohexylgeldanamycin and docetaxel induce cytotoxicity synergistically suggesting potential as combination therapy for ovarian cancer.

  8. Communications

    1. Microfluidic Synthesis of Pharmacologically Responsive Supramolecular Biohybrid Microgels

      Désirée Hövermann, Torsten Rossow, Raphael J. Gübeli, Sebastian Seiffert and Wilfried Weber

      Article first published online: 3 SEP 2014 | DOI: 10.1002/mabi.201400342

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      We describe the microfluidic synthesis of pharmacologically responsive biohybrid hydrogel particles synthesized from 8-arm poly(ethylene glycol) coupled to fluorescein and a fluorescein-specific humanized antibody fragment. Mixing the reactants in a microfluidic device results in narrowly dispersed microgels that can be degraded selectively by addition of fluorescein to disrupt the antigen–antibody ties.

  9. Reviews

    1. You have free access to this content
      Polymeric Anti-HIV Therapeutics

      Maarten Danial and Harm-Anton Klok

      Article first published online: 3 SEP 2014 | DOI: 10.1002/mabi.201400298

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      Anti-HIV therapeutics have enabled to improve the lives of many infected individuals and shifted the prognosis to a chronic but manageable disease. In parallel to the development of small molecule drug therapeutics, profound interest and efforts have been made to develop polymeric anti-HIV therapeutics. An overview of these macromolecular therapeutics is presented herein.

  10. Full Papers

    1. A Combined Micelle and Poly(Serinol Hexamethylene Urea)-Co-Poly(N-Isopropylacrylamide) Reverse Thermal Gel as an Injectable Ocular Drug Delivery System

      Amin Famili, Malik Y. Kahook and Daewon Park

      Article first published online: 3 SEP 2014 | DOI: 10.1002/mabi.201400250

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      A poorly-soluble ocular corticosteroid is encapsulated within polymeric micelles, which are mixed with a novel reverse thermal gel to form an injectable long-term drug delivery system. This combined system improves release kinetics of the drug over micelles or reverse thermal gel alone by eliminating burst release behavior and extending the timeframe of drug release.

    2. Spatiotemporally Programmable Surface Engineered Nanoparticles for Effective Anticancer Drug Delivery

      Arsalan Ahmed, Hongliang Yu, Dingwang Han, Jingwei Rao, Yin Ding and Yong Hu

      Article first published online: 2 SEP 2014 | DOI: 10.1002/mabi.201400228

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      Reducible stealthy hybrid nanoparticles are fabricated. The obtained nanoparticles have a sandwich structure consisting of a long circulating outermost layer, a targeting middle layer, and a hydrophobic innermost core. The outermost layer detaches from the nanoparticles in the tumor tissue. Targeting ligands are used to strengthen the interaction between nanoparticles and tumor cells, and the inner core encapsulates and protects the drug from non-specific interactions.

  11. Communications

    1. Nanostructured Gel Scaffolds for Osteogenesis through Biological Assembly of Biopolymers via Specific Nucleobase Pairing

      Ming Fan, Jingxuan Yan, Huaping Tan, Dandan Ben, Qiuling He, Zhongwei Huang and Xiaohong Hu

      Article first published online: 2 SEP 2014 | DOI: 10.1002/mabi.201400320

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      A nanostructured gel scaffold basing cellulose and heparin was developed for targeted BMP-2 delivery and in vitro osteogenesis. The gel scaffold was attributed to the mechanism of the Watson–Crick base pairing via intermolecular hydrogen bonding between thymine and adenine.

  12. Full Papers

    1. Structurally Distinct Hybrid Polymer/Lipid Nanoconstructs Harboring a Type-I Ribotoxin as Cellular Imaging and Glioblastoma-Directed Therapeutic Vectors

      M. Sheikh Mohamed, Srivani Veeranarayanan, Ankur Baliyan, Aby Cheruvathoor Poulose, Yutaka Nagaoka, Hiroaki Minegishi, Seiki Iwai, Yasuhiro Shimane, Yasuhiko Yoshida, Toru Maekawa and D. Sakthi Kumar

      Article first published online: 2 SEP 2014 | DOI: 10.1002/mabi.201400248

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      A multicomponent polymeric/lipid nano-construct encompassing a plant toxin and imaging dye was utilized to specifically curb the proliferation tendencies of glioblastoma in addition to suppressing the anti-apoptotic survivin and membrane interaction vinculin proteins. The cytocompatibility and multifunctionality of the nanoparticles significantly projects their prospective theranostic potential.

    2. Novel Poly(Ethylene Oxide)-b-Poly(Propylene Oxide) Copolymer-Glucose Conjugate by the Microwave-Assisted Ring Opening of a Sugar Lactone

      Romina J. Glisoni and Alejandro Sosnik

      Article first published online: 27 AUG 2014 | DOI: 10.1002/mabi.201400235

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      The surface modification of Pluronic® F127 polymeric micelles with glucose residues by means of a fast and efficient ring opening reaction of gluconolactone leads to their recognition by a soluble vegetal lectin, Concanavalin A, and their subsequent agglutination.

    3. Stabilization of Gelatin Nanoparticles Without Crosslinking

      Saeed Ahmad Khan and Marc Schneider

      Article first published online: 26 AUG 2014 | DOI: 10.1002/mabi.201400214

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      Crosslinking free preparation of gelatin nanoparticles is described, offering a flexible drug carrier system for hydrophilic materials. The structural integrity of gelatin nanoparticles is kept intact by coating them with Eudragit® E 100 forming hybrid nanospheres. For preparation, a hybrid technique of nanoprecipitation-emulsion solvent evaporation is employed.

    4. Synthesis of Homopolypeptides by Aminolysis Mediated by Proteases Encapsulated in Silica Nanospheres

      Peter J. Baker, Siddharth V. Patwardhan and Keiji Numata

      Article first published online: 25 AUG 2014 | DOI: 10.1002/mabi.201400295

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      The encapsulation of three different proteases (bromelain, papain, and trypsin) in bioinspired silica enhances their thermal stability for both hydrolysis and aminolysis reactions. The enhanced thermal activity resulted in increased production of poly-L-leucine, poly-L-alanine, and poly-L-valine by protease-mediated aminolysis at 50 °C.

    5. Boronic Acid Shell-Crosslinked Dextran-b-PLA Micelles for Acid-Responsive Drug Delivery

      Ziwei Zhao, Xuemei Yao, Zhe Zhang, Li Chen, Chaoliang He and Xuesi Chen

      Article first published online: 21 AUG 2014 | DOI: 10.1002/mabi.201400251

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      3-carboxy-5-nitrophenylboronic acid (CNPBA) shell-crosslinked micelles based on amphiphilic dextran-block-polylactide (Dex-b-PLA) are prepared and used for efficient intracellular drug delivery. The pH-responsive biodegradable CNPBA-Dex-b-PLA can efficiently load and deliver DOX into tumor cells and enhance the inhibition of cellular proliferation in vitro, providing a favorable platform as a drug delivery system for cancer therapy.

    6. Functional Brush-Decorated Poly(globalide) Films by ARGET-ATRP for Bioconjugation

      Zeliha Ates, Fabrice Audouin, Amy Harrington, Brendan O'Connor and Andreas Heise

      Article first published online: 21 AUG 2014 | DOI: 10.1002/mabi.201400282

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      Poly(acrylic) acid brushes were grafted from polyester films obtained from the unsaturated macrolactone globalide by ARGET ATRP of tert.-butyl acrylate. After mild in situ deprotection high-density acrylic acid functional films were obtained while avoiding polyester hydrolysis. The conjugation with green fluorescent protein (GFP) and an enzyme was successfully carried out retaining the enzymatic activity.

    7. Monodisperse Carboxyl-Functionalized Poly(Ethylene Glycol)-Coated Magnetic Poly(Glycidyl Methacrylate) Microspheres: Application to the Immunocapture of β-Amyloid Peptides

      Daniel Horák, Helena Hlídková, Mohamed Hiraoui, Myriam Taverna, Vladimír Proks, Eliška Mázl Chánová, Claire Smadja and Zdenka Kučerová

      Article first published online: 21 AUG 2014 | DOI: 10.1002/mabi.201400249

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      Monodisperse magnetic poly(glycidyl methacrylate) microspheres coated with α-amino-ω-methoxy-PEG5000/α-amino-ω-Boc-NH-PEG5000 substantially reduced non-specific protein adsorption. Anti-Aβ 6E10-immobilized microspheres specifically captured β-amyloid peptide (Aβ) from model solutions. Identification and evaluation of small changes in Aβ levels in cerebrospinal fluid is of crucial importance for early detection of Alzheimer's disease.

  13. Communication

    1. Micropatterning Electrospun Scaffolds to Create Intrinsic Vascular Networks

      Eric M. Jeffries, Shintaro Nakamura, Kee-Won Lee, Jimmy Clampffer, Hiroyuki Ijima and Yadong Wang

      Article first published online: 20 AUG 2014 | DOI: 10.1002/mabi.201400306

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      Engineered microvasculature that effectively perfuses the parenchyme and directly integrates with host circulation remains the challenge of organ engineering. Described is a method for patterning microvascular structures in electrospun scaffolds using water-soluble templates produced by fused deposition modeling. The fibrous nature mimicks extracellular matrix and permits nutrient diffusion. Additionally, scaffolds are biodegradable and suturable. In vitro endothelialization demonstrates feasible vascularization.

  14. Full Papers

    1. Electrospun Honeycomb as Nests for Controlled Osteoblast Spatial Organization

      Salima Nedjari, Sandy Eap, Anne Hébraud, Corinne R. Wittmer, Nadia Benkirane-Jessel and Guy Schlatter

      Article first published online: 19 AUG 2014 | DOI: 10.1002/mabi.201400226

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      PCL and PLA nanofibrous scaffolds with honeycomb micro-patterns are prepared by electrospinning. It is shown that the relief of the scaffolds depends on the distribution of fiber diameters. Mimicking hemi-osteons, cell gathering is observed inside the PCL honeycomb fibrous nests with a characteristic size greater than 80 μm.

    2. An Orthogonal Click-Chemistry Approach to Design Poly(glycerol monomethacrylate)-based Nanomaterials for Controlled Immunostimulation

      Lakshminarayanan Ragupathy, Douglas G. Millar, Nicola Tirelli and Francesco Cellesi

      Article first published online: 18 AUG 2014 | DOI: 10.1002/mabi.201400146

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      Immune active polymers based on poly(glycerol monomethacrylate) (PGMMA) are presented. Propargyl-terminated PGMMAs, modified with dangling acrylate groups, are conjugated with thiomannose through Michael-type addition. Orthogonal azide-alkyne cycloaddition can be used to prepare a final traceable nanomaterial. Depending on the mannose content, these polymers can activate dendritic cells, stimulating cytokine (TNFα) and surface activation marker (CD40) expression.

    3. Telechelic Poly(2-oxazoline)s with a Biocidal and a Polymerizable Terminal as Collagenase Inhibiting Additive for Long-Term Active Antimicrobial Dental Materials

      Christoph P. Fik, Stefan Konieczny, David H. Pashley, Christian J. Waschinski, Reinhild S. Ladisch, Ulrich Salz, Thorsten Bock and Joerg C. Tiller

      Article first published online: 8 AUG 2014 | DOI: 10.1002/mabi.201400220

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      A dental adhesive is rendered antimicrobially contact-active by an additive based on poly(2-methyloxazoline) equipped with a biocidal and a polymerizable end group. The polymeric additive also kills cariogenic bacteria in dentin tubuli and inhibits collagenases, such as human MMP that naturally adhere to dental tissue for preventing dentin degradation below a dental restoration.

    4. Stable Biochemically Micro-patterned Hydrogel Layers Control Specific Cell Adhesion and Allow Long Term Cyclic Tensile Strain Experiments

      Alexandra M. Greiner, Peter Hoffmann, Kristina Bruellhoff, Simon Jungbauer, Joachim P. Spatz, Martin Moeller, Ralf Kemkemer and Jürgen Groll

      Article first published online: 6 AUG 2014 | DOI: 10.1002/mabi.201400261

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      PDMS coated with sP(EO-stat-PO) is patterned with fibronectin by micro-contact printing and used for studies with human dermal fibroblasts exposed to uniaxial cyclic tensile strain (CTS). The coating has long term specific protein and cell anti- and pro-adhesive properties. The cells align along the fibronectin lines and orient accordingly their actin fibers independently of the direction of CTS application.

    5. A Novel Crosslinked Hyaluronic Acid Nanogel for Drug Delivery

      Sílvia Santos Pedrosa, Catarina Gonçalves, Laurent David and Miguel Gama

      Article first published online: 4 AUG 2014 | DOI: 10.1002/mabi.201400135

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      A simple two-step method is developed for the synthesis of a redox sensitive hyaluronic acid nanogel. Hyaluronic acid is chemically grafted with a thiolated alkyl chain that allows the reticulation of the self assembled nanogel by dissulfide bond. The nanogel presents high stability and drug loading efficiency.

    6. Rapid Flow Through Immunoassay for CRP Determination Based on Polyethylene Filters Modified with ω-Aminocellulose Carbamate

      Thomas Elschner, Friedrich Scholz, Peter Miethe and Thomas Heinze

      Article first published online: 4 AUG 2014 | DOI: 10.1002/mabi.201400179

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      A new covalent antibody immobilization method based on ω-aminocellulose carbamate coatings is investigated. The flow through immunoassay for CRP determination possesses a very low limit of detection (5 ng CRP mL−1) and a high precision (CV < 9.1%).

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