Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Donaldson, Janet R.
Committee Member
Thornton, Justin
Committee Member
Lawrence, Mark L.
Date of Degree
5-12-2012
Document Type
Graduate Thesis - Open Access
Major
Biological Sciences
Degree Name
Master of Science
College
College of Arts and Sciences
Department
Department of Biological Sciences
Abstract
Listeria monocytogenes is a food-borne pathogen responsible for the disease listeriosis. The infectious process depends upon survival in high bile salt conditions encountered throughout the gastrointestinal tract, including the gallbladder. However, it is not clear how bile salt resistance mechanisms are induced, especially under physiologically relevant conditions. This study sought to determine how L. monocytogenes responds to bile salts under anaerobic conditions. The study found resistance to be strain specific and not dependent upon virulence. Changes in the expressed proteome were analyzed using multidimensional protein identification technology coupled with electrospray ionization tandem mass spectrometry. A general response among virulent and avirulent strains found significant alterations in intensity of cell wall associated proteins, DNA repair proteins, protein folding chaperones and oxidative response proteins. Strain viability was correlated with an initial osmotic stress response followed by strain specific proteins associated with biofilm formation in EGDe and a transmembrane efflux pump in F2365.
URI
https://hdl.handle.net/11668/17915
Recommended Citation
Payne, Angela Inez, "Response of Listeria Monocytogenes to Bile Salts" (2012). Theses and Dissertations. 3803.
https://scholarsjunction.msstate.edu/td/3803
Comments
proteomic analysis||anaerobic||bile salts||Listeria monocytogenes