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Development of Streptococcus Pneumoniae Vaccines Using Live Vectors

Description

Streptococcus pneumoniae still causes severe morbidity and mortality worldwide, especially in young children and the elderly. Much effort has been dedicated to developing protein-based universal vaccines to conquer the current shortcomings of capsular vaccines and capsular conjugate vaccines, such as serotype replacement, limited coverage and high costs. A recombinant live…

Streptococcus pneumoniae still causes severe morbidity and mortality worldwide, especially in young children and the elderly. Much effort has been dedicated to developing protein-based universal vaccines to conquer the current shortcomings of capsular vaccines and capsular conjugate vaccines, such as serotype replacement, limited coverage and high costs. A recombinant live vector vaccine delivering protective antigens is a promising way to achieve this goal. In this review, we discuss the researches using live recombinant vaccines, mainly live attenuated Salmonella and lactic acid bacteria, to deliver pneumococcal antigens. We also discuss both the limitations and the future of these vaccines.
ContributorsWang, Shifeng (Author) / Curtiss, Roy (Author) / ASU Biodesign Center Immunotherapy, Vaccines and Virotherapy (Contributor) / Biodesign Institute (Contributor)
Created2015-01-07
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Generation of asd plasmids with a red fluorophore for in vivo imaging

Description
The purpose of my honors thesis project was to generate the tools needed for in vivo imaging by determining the optimal plasmid-fluorophore combination. To determine the optimal plasmid and fluorophore, asd plasmids were constructed with various promoters, origins of replications, and red fluorophores. The optimal asd plasmid for fluorescent in…

The purpose of my honors thesis project was to generate the tools needed for in vivo imaging by determining the optimal plasmid-fluorophore combination. To determine the optimal plasmid and fluorophore, asd plasmids were constructed with various promoters, origins of replications, and red fluorophores. The optimal asd plasmid for fluorescent in vivo imaging was determined by the plasmid stability, growth rate, and growth phase dependence on fluorescent intensity. The end goal is to be able to use the asd plasmid in vaccine strains for the purpose of in vivo imaging of the recombinant attenuated Salmonella vaccine (RASV).
ContributorsEudy, L. Adam (Author) / Curtiss, Roy (Thesis director) / Roland, Kenneth (Committee member) / Forbes, Stephen (Committee member) / Barrett, The Honors College (Contributor) / College of Liberal Arts and Sciences (Contributor)
Created2012-12
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A Multiplexed Lateral Flow Assay for The Serologic Point of Care Detection of HPV Positive Cervical Cancer

Description
Human Papillomavirus (HPV) is the most commonly transmitted STI and isresponsible for an estimated 5% of cancer cases worldwide. HPV infection is implicated in 70% of cervical cancer incidence and is also responsible for a variety of oropharyngeal and anogenital cancers. While vaccination has greatly reduced the cervical cancer burden in developed countries,…

Human Papillomavirus (HPV) is the most commonly transmitted STI and isresponsible for an estimated 5% of cancer cases worldwide. HPV infection is implicated in 70% of cervical cancer incidence and is also responsible for a variety of oropharyngeal and anogenital cancers. While vaccination has greatly reduced the cervical cancer burden in developed countries, HPV infection remains high in developing countries due to high cost and poor access to healthcare. Several studies have highlighted the presence of anti-HPV antibodies following infection and their potential use as biomarkers for developing novel screening methods. Progression from initial infection to cancer is slow, thus presenting an opportunity for effective screening programs. Biomarker screening is an important area of cancer detection and Lateral Flow Assays (LFA) are a low cost, easy to use alternative to other screening methods that require extensive training and laboratory space. Therefore, this project proposes as a hypothesis that the development of an LFA screening for HPV specific IgG can provide clinically relevant data for the early detection of cervical dysplasia. This project adapts an LFA in a multiplexed format for fluorescence-based serologic detection of HPV specific IgG in patient plasma.
ContributorsJohns, William (Author) / Anderson, Karen (Thesis advisor) / Lake, Douglas (Committee member) / Hogue, Brenda (Committee member) / Arizona State University (Publisher)
Created2023