16. February 2018
Here you find some abstracts of Engineering of "Biomaterials for Drug Delivery Systems - beyond Polyethylene Glycol". 1 – PEGylated “stealth” nanoparticles and liposomes Through nanomedicine, game-changing methods are emerging to deliver drug molecules directly to diseased tissue. The targeted delivery of drugs and imaging agents via drug carrier-based platforms is among the most promising of these methods. Such drug delivery systems can now be synthesized from a wide range of different...
23. January 2018
Glucagon is a peptide hormone used for the treatment of hypoglycemia; however, its clinical potential is limited by its insolubility and instability in solution. Herein, the encapsulation, stabilization, and release of glucagon by trehalose glycopolymer nanogels are reported. Methacrylate-functionalized trehalose is copolymerized with pyridyl disulfide ethyl methacrylate using free radical polymerization conditions to form trehalose glycopolymers with thiol-reactive handles.
18. August 2017
The administration of therapeutic proteins by inhalation is getting more and more important to treat respiratory diseases.
To enhance residence time of these biopharmaceuticals in the lungs PEGylation is of interest also to reduce the daily burden of inhalation therapies.
24. October 2016
Abstract Drug nanocrystals (NCs) are colloidal dispersions composed almost entirely of drug. As such, there is substantial interest in targeting them to diseased tissues, where they can locally deliver high doses of the therapeutic. However, because of their uncontrolled dissolution characteristics in vivo and uptake by the monomolecular phagocyte system, achieving tumor accumulation is challenging. To address these issues, a layer-by-layer approach is adopted to coat paclitaxel NCs with...
04. July 2016
Abstract The technique of attaching the polymer polyethylene glycol (PEG), or PEGylation, has brought more than ten protein drugs into market. The surface conjugation of PEG on proteins prolongs their blood circulation time and reduces immunogenicity by increasing their hydrodynamic size and masking surface epitopes. Despite this success, an emerging body of literature highlights the presence of antibodies produced by the immune system that specifically recognize and bind to PEG (anti-PEG Abs),...
15. March 2016
Surface modification/functionalization of nanoparticles (NPs) using polymeric protective agents is an issue of great importance and actuality for drug delivery and targeting. Improving the blood circulation half-life of surface-protected nanocarriers is closely related to the elimination of main biological barriers and limiting factors (protein absorption and opsonization), due to the phagocytic activity of reticuloendothelial system. For passive or active targeted delivery, in biomedical area,...
08. November 2015
Attachment of a chain of poly (ethylene glycol) (PEG) to a therapeutic protein, a process widely known as PEGylation, can lead to several beneficial effects. It has the potential to significantly delay aggregation of the protein by steric shielding, a frequently encountered issue in the development of protein drugs. More
06. August 2015
Louise Stenstrup Holm , Peter W. Thulstrup, Marina R. Kasimova, Marco van de Weert Published: July 31, 2015 DOI: 10.1371/journal.pone.0133584