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Cold Shock Proteins in Francisella Novicida

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dc.contributor.advisor van Hoek, Monique L Feroze, Tayyaba
dc.creator Feroze, Tayyaba 2017-05-04 2017-12-21T20:22:28Z 2018-05-04T06:42:09Z
dc.identifier doi:10.13021/G86Q47
dc.description This thesis has been embargoed for 1 year. It will not be available until May 2018 at the earliest. en_US
dc.description.abstract Francisella tularensis is a facultative intracellular pathogen causing the zoonotic disease tularemia. The mechanisms employed by Francisella to adapt to cold temperatures, harsh intracellular environments, and being able to survive within host macrophages are not clearly understood. Cold- shock proteins (CSPs) are involved in growth at low temperatures as well as other stressful conditions and Francisella novicida encodes two CSPs: cspA and cspC. In this study we showed that at 10°C there was discernible growth defect between wildtype and ΔcspA and ΔcspC. We studied the expression of cspA and cspC genes in Francisella under cold temperature, hydrogen peroxide, and low pH as determined via quantitative reverse transcription PCR. Our results suggest that overall cspA plays a general role in stress response. During osmotic stress, ΔcspC was more sensitive compared to ΔcspA and the parental strain and significantly made more biofilm. These findings suggest that Francisella’s ΔcspA and ΔcspC genes make essential contributions to allowing the bacteria to adapt to cold temperatures and other harsh conditions encountered within the host. In addition, there are some differential roles being played by cspA and cspC that need further investigation. Information from this this study is critical to our understanding of how this pathogen responds to and survives in diverse environments. en_US
dc.language.iso en en_US
dc.subject cold-shock en_US
dc.subject cold-shock proteins en_US
dc.subject Francisella novicida en_US
dc.subject cold-shock domain en_US
dc.subject tularemia en_US
dc.title Cold Shock Proteins in Francisella Novicida en_US
dc.type Thesis en_US Master of Science in Biology en_US Master's en_US Biology en_US George Mason University en_US

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