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Title: Understanding early transcriptional events in Staphylococcus aureus infection
Author: Lindemann, Claudia
ISNI:       0000 0004 6500 6390
Awarding Body: University of Oxford
Current Institution: University of Oxford
Date of Award: 2017
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Staphylococcus aureus remains an important pathogen, which, due to its capability to develop antimicrobial resistance, imposes an increasing threat to human health. Developing preventive means to decrease disease burden is a major aim. However, the development of an S. aureus vaccine, which would be one strategy to achieve such goals, has been complicated through limited understanding of the bacterium's pathogenic mechanisms. This work uses four approaches to address these limitations: Firstly, a reproducible RNA sequencing based method for the determination of gene transcription by S. aureus in vivo during mammalian infection. Secondly, examination of the impact of the bacterial transcription regulator 'Rsp' on the bacterium, which shows that mutations in this gene have profound functional and transcriptional impacts. Thirdly, by examining the in vivo transcription of multiple S. aureus strains during infection, proposing a 'core in vivo transcriptome' of induced genes under the conditions tested. Some of these genes are known to be involved in pathogenesis, others are not completely characterised and may represent suitable vaccine antigens. Finally, this work addresses limited understanding of S. aureus pathogenesis through defining transcriptional changes in vivo, which are induced by an altered immune response in immunised hosts. Together, this body of work contributes to the understanding of S. aureus pathogenesis and provides candidate antigens for future vaccine development.
Supervisor: Wyllie, David ; Wilson, Daniel Sponsor: Marie Curie ITN Fellowship
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Next Generation Sequencing ; Vaccines ; Bacteria ; Communicable diseases ; Staphylococcus aureus ; rsp gene ; Antigen Identification ; In vivo RNA transcription ; Vaccine Development