Use this URL to cite or link to this record in EThOS:
Title: Development of a biosensor using aptamer/antigen interactions
Author: Fordham, Daniel George
ISNI:       0000 0004 2710 7107
Awarding Body: University of Portsmouth
Current Institution: University of Portsmouth
Date of Award: 2011
Availability of Full Text:
Access from EThOS:
Access from Institution:
The use of aptamers acting within novel biosensors as molecular recognition elements is well documented with a wide variety of techniques being adapted to take advantage of the benefits of oligonucleotide detection. A continuing barrier to the commercial use of ssDNA or RNA aptamers remains the lack of a high-throughput system that confers reliable selection and description of suitable species. Here we describe simple methodologies that utilise fusion proteins, modified affinity chromatography, HPLC, and, nanopore assays, along with other techniques to isolate novel aptamers to well-characterised proteins. These methods have yielded novel aptamers to the HsdR, and HsdS subunits of type I restrictionmodification system EcoR124I and to the human rhinovirus 3C protease, along with an enriched libraries for nitrotyrosine. In addition to the isolation of novel aptamer species, methods for the characterisation of the binding capabilities of candidate aptamers are presented. The techniques of SPR, EMSA, and dot blotting are evaluated and utilised in the appraisal of the novel aptamer sequences.
Supervisor: McClellan, James Alexander Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Biology