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Microstructured dextran hydrogels for burst-free sustained release of PEGylated protein drugs.

Abstract
Hydrogels have gained significant attention as ideal delivery vehicles for protein drugs. However, the use of hydrogels for protein delivery has been restricted because their porous structures inevitably cause a premature leakage of encapsulated proteins. Here, we report a simple yet effective approach to regulate the protein release kinetics of hydrogels through the creation of microstructures, which serve as a reservoir, releasing their payloads in a controlled manner. Microstructured dextran hydrogels enable burst-free sustained release of PEGylated interferon over 3 months without compromising its bioactivity. These hydrogels substantially extend the circulation half-life of PEGylated interferon, allowing for less frequent dosing in a humanized mouse model of hepatitis C. The present approach opens up possibilities for the development of sustained protein delivery systems for a broad range of pharmaceutical and biomedical applications.
AuthorsKi Hyun Bae, Fan Lee, Keming Xu, Choong Tat Keng, Sue Yee Tan, Yee Joo Tan, Qingfeng Chen, Motoichi Kurisawa
JournalBiomaterials (Biomaterials) Vol. 63 Pg. 146-57 (Sep 2015) ISSN: 1878-5905 [Electronic] Netherlands
PMID26100344 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2015 Elsevier Ltd. All rights reserved.
Chemical References
  • Antiviral Agents
  • Delayed-Action Preparations
  • Dextrans
  • Hydrogels
  • Interferon-alpha
  • Polyethylene Glycols
Topics
  • Animals
  • Antiviral Agents (administration & dosage, chemistry, pharmacokinetics, therapeutic use)
  • Cell Line, Tumor
  • Delayed-Action Preparations (chemistry)
  • Dextrans (chemistry)
  • Hepacivirus (drug effects, isolation & purification)
  • Hepatitis C (drug therapy, pathology)
  • Humans
  • Hydrogels (chemistry)
  • Interferon-alpha (administration & dosage, chemistry, pharmacokinetics, therapeutic use)
  • Liver (pathology, virology)
  • Male
  • Mice
  • Polyethylene Glycols (chemistry)

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