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221 Aktuelle Fachpublikationen zum Thema Addition

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Stimuli-Responsive Cellulose Nanocrystals for Surfactant-Free Oil Harvesting

19.04.2016 | Juntao Tang; Richard M. Berry; Kam C. Tam, Biomacromolecules, 2016

Cellulose nanocrystals with grafted binary polymer brushes (CNC-BPB), poly(oligoethylene glycol) methacrylate (POEGMA) and poly(methacrylic acid) (PMAA), were prepared by cerium-mediated polymerization in aqueous solution. The physical properties of CNC-BPB can be controlled by external triggers, ...

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Bienzymatic Sequential Reaction on Microgel Particles and Their Cofactor Dependent Applications

08.04.2016 | Nidhi C. Dubey; Bijay P. Tripathi; Martin Müller; Manfred Stamm; Leonid Ionov, Biomacromolecules, 2016

We report, the preparation and characterization of bioconjugates, wherein enzymes pyruvate kinase (Pk) and l-lactic dehydrogenase (Ldh) were covalently bound to poly(N-isopropylacrylamide)-poly(ethylenimine) (PNIPAm-PEI) microgel support using glutaraldehyde (GA) as the cross-linker. The effects ...

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Programmable Self-Assembly of DNA–Protein Hybrid Hydrogel for Enzyme Encapsulation with Enhanced Biological Stability

30.03.2016 | Lan Wan; Qiaoshu Chen; Jianbo Liu; Xiaohai Yang; Jin Huang; Li Li; Xi Guo; Jue Zhang; Kemin Wang, Biomacromolecules, 2016

A DNA–protein hybrid hydrogel was constructed based on a programmable assembly approach, which served as a biomimetic physiologic matrix for efficient enzyme encapsulation. A dsDNA building block tailored with precise biotin residues was fabricated based on supersandwich hybridization, and then ...

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3D Printed Silicone–Hydrogel Scaffold with Enhanced Physicochemical Properties

04.03.2016 | Soumyaranjan Mohanty; Martin Alm; Mette Hemmingsen; Alireza Dolatshahi-Pirouz; Jon Trifol; Peter Thomsen; Martin Duf ..., Biomacromolecules, 2016

Scaffolds with multiple functionalities have attracted widespread attention in the field of tissue engineering due to their ability to control cell behavior through various cues, including mechanical, chemical, and electrical. Fabrication of such scaffolds from clinically approved materials is ...

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Trimeric PEG-Conjugated Exendin-4 for the Treatment of Sepsis

03.03.2016 | Wonhwa Lee; Eun Ji Park; Soyoung Kwak; Kang Choon Lee; Dong Hee Na; Jong-Sup Bae, Biomacromolecules, 2016

Exendin-4 (EX4), a glucagon-like peptide-1 receptor (GLP-1R) agonist that regulates blood glucose levels, has been used in the management of type-2 diabetes mellitus. EX4 can be PEGylated to improve its antidiabetic effects by enhancing its stability and extending the circulation half-life. Here, ...

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Properties of Poly(ethylene glycol) Hydrogels Cross-Linked via Strain-Promoted Alkyne–Azide Cycloaddition (SPAAC)

12.02.2016 | Sabrina M. Hodgson; Emilia Bakaic; S. Alison Stewart; Todd Hoare; Alex Adronov, Biomacromolecules, 2016

A series of poly(ethylene glycol) (PEG) hydrogels was synthesized using strain-promoted alkyne–azide cycloaddition (SPAAC) between PEG chains terminated with either aza-dibenzocyclooctynes or azide functionalities. The gelation process was found to occur rapidly upon mixing the two components in ...

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N-Acetylgalactosamine Block-co-Polycations Form Stable Polyplexes with Plasmids and Promote Liver-Targeted Delivery

08.02.2016 | Yogesh K. Dhande; Bharat S. Wagh; Bryan C. Hall; Dustin Sprouse; Perry B. Hackett; Theresa M. Reineke, Biomacromolecules, 2016

The liver is an ideal target for nucleic acid therapeutic applications (i.e., siRNA, gene therapy, and genome editing) due to its ability to secrete proteins into the blood. In this work, we present the first synthesis of a novel monomer derived from N-acetyl-d-galactosamine (GalNAc) and its ...

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Collagen–Poly(N-isopropylacrylamide) Hydrogels with Tunable Properties

05.02.2016 | Amanda L. Barnes; Paul G. Genever; Stephen Rimmer; Mark C. Coles, Biomacromolecules, 2016

There is a lack of hydrogel materials whose properties can be tuned at the point of use. Biological hydrogels, such as collagen, gelate at physiological temperatures; however, they are not always ideal as scaffolds because of their low mechanical strength. Their mechanics can be improved through ...

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Rapid Gelling Chitosan/Polylysine Hydrogel with Enhanced Bulk Cohesive and Interfacial Adhesive Force: Mimicking Features of Epineurial Matrix for Peripheral Nerve Anastomosis

27.01.2016 | Yalin Zhou; Jin Zhao; Xiaolei Sun; Sidi Li; Xin Hou; Xubo Yuan; Xiaoyan Yuan, Biomacromolecules, 2016

Prompt and strong reconnection of severed peripheral nerves is crucial to nerve regeneration. The development of biocompatible nerve adhesives that are stronger than commonly used fibrin glue would be extremely beneficial to this field. We designed an in situ forming nerve adhesive hydrogel ...

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Liposome-Cross-Linked Hybrid Hydrogels for Glutathione-Triggered Delivery of Multiple Cargo Molecules

25.01.2016 | Yingkai Liang; Kristi L. Kiick, Biomacromolecules, 2016

Novel, liposome-cross-linked hybrid hydrogels cross-linked by the Michael-type addition of thiols with maleimides were prepared via the use of maleimide-functionalized liposome cross-linkers and thiolated polyethylene glycol (PEG) polymers. Gelation of the materials was confirmed by oscillatory ...

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