Biggs, Caroline I. (2015) Bio-integrative polymer surfaces. PhD thesis, University of Warwick.

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Abstract

Protein-carbohydrate interactions mediate a diverse range of biological responses including pathogen-cell adhesion. In this age of decreased antibiotic discovery and increased antibiotic resistance, the study of protein-carbohydrate interactions is crucial to improve our understanding of pathogen-host interactions and surface bound carbohydrates, glycoarrays, offer a powerful tool towards furthering knowledge in this area. These concepts and current glycoarray methodologies are described in Chapter One. This thesis aims to develop glycan immobilisation techniques both directly and using polymeric tethers. Acrylate silane linkers are used to immobilise thiol-terminated monosaccharides by thiol-ene “click”, as described in Chapter
Two. These immobilised glycans are then used to interrogate lectin-carbohydrate interactions. In Chapter Three the synthesis of poly(oligo(ethylene glycol)methyl ether methacrylate)s (pOEGMA)s and poly(N-isopropylacrylamide)s (pNIPAM)s, by reversible addition fragmentation transfer (RAFT) polymerisation is presented. The reduction of the terminal thiocarbonylthio group was explored for thiol-ene surface modifications and thiol-gold reactions. The resulting polymer coatings are characterised and a detailed Quartz Crystal Microbalance study compares their grafting. In Chapter Four, the concepts of glycan immobilisation and polymer grafting are combined and glycan-terminated polymers are synthesised, surface grafted and used to explore protein-carbohydrate interactions. The thesis concludes with the direct contact printing of high density arrays of glycosylated polymers, showing the potential of this technique as a screening tool to monitor these biologically relevant processes.

Item Type:	Thesis (PhD)
Subjects:	Q Science > QD Chemistry
Library of Congress Subject Headings (LCSH):	Protein binding, Carbohydrates, Proteins -- Structure, Polymers -- Surfaces, Glycoproteins
Official Date:	September 2015
Dates:	Date Event September 2015 Submitted
Institution:	University of Warwick
Theses Department:	Department of Chemistry
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Gibson, Matthew
Sponsors:	Biotechnology and Biological Sciences Research Council (Great Britain)
Extent:	xxxi, 228 leaves : illustrations (chiefly colour).
Language:	eng

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