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Title: BioPEGylation of Polyhydroxybutyrate promotes nerve cell health and migration
Authors: Chan, RTH
Russell, RA
Marçal, H
Lee, TH
Holden, PJ
Foster, LJR
Keywords: Polyethylenes
Molecular structure
Issue Date: 3-Dec-2013
Publisher: ACS Publications
Citation: Chan, R. T. H., Russell, R. A., Marçal, H., Lee, T. H., Holden, P. J., & Foster, L. J. R. (2014). BioPEGylation of polyhydroxybutyrate promotes nerve cell health and migration. Biomacromolecules, 15(1), 339-349. doi:10.1021/bm401572a
Abstract: This study reports on the superior suitability of Polyhydroxybutyrate-polyethylene glycol hybrid polymers biosynthesised by Cupriavidus necator over PHB as biomaterials for tissue engineering. Incorporation of PEG106 (DEG) during PHB biosynthesis reduced crystallinity, molecular weight, and hydrophobicity while improving mechanical properties. In vitro olfactory ensheathing cell (OEC) proliferation was enhanced by cultivation on PHB-b-DEG films. Cultivation on PHB and PHB-b-DEG films showed no cytotoxic responses and cell viability and membrane integrity was sustained. PHB-b-DEG films promoted OECs entering into the DNA replication (S) phase and mitotic (G2-M) phase during the cell growth cycle and apoptosis was low. This study also confirmed an association between the level of neurite-outgrowth inhibitory protein (Nogo) and receptor pair Ig-like receptor B (PirB) expression and cell proliferation, both being down-regulated in cells grown on hybrid films when compared with PHB and asynchronous growth. Thus, DEG-terminated PHB-based biomaterials have great potential as biological scaffolds supporting nerve repair. © 2013 American Chemical Society.
Gov't Doc #: 6737
ISSN: 1525-7797
Appears in Collections:Journal Articles

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