Journal
JOURNAL OF CONTROLLED RELEASE
Volume 154, Issue 2, Pages 110-122Publisher
ELSEVIER
DOI: 10.1016/j.jconrel.2011.04.022
Keywords
Immunoisolation; Cell encapsulation; Permeability; Semi-permeable membranes; Hydrogels
Funding
- Australian Research Council [DP0986447]
- Australian Research Council [DP0986447] Funding Source: Australian Research Council
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Cell-based medicine has recently emerged as a promising cure for patients suffering from various diseases and disorders that cannot be cured/treated using technologies currently available. Encapsulation within semipermeable membranes offers transplanted cell protection from the surrounding host environment to achieve successful therapeutic function following in vivo implantation. Apart from the immunoisolation requirements, the encapsulating material must allow for cell survival and differentiation while maintaining its physico-mechanical properties throughout the required implantation period. Here we review the progress made in the development of cell encapsulation technologies from the mass transport side, highlighting the essential requirements of materials comprising immunoisolating membranes. The review will focus on hydrogels, the most common polymers used in cell encapsulation, and discuss the advantages of these materials and the challenges faced in the modification of their immunoisolating and permeability characteristics in order to optimize their function. (C) 2011 Elsevier B.V. All rights reserved.
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