Public Health Relevance

Streptococcus pyogenes, the group A streptococcus (GAS) is an important human pathogen that causes many types of disease, ranging in severity from strep throat to severe invasive disease and streptococcal toxic shock syndrome. By elucidating the regulation of expression of virulence factors in the GAS, this project will help define the mechanisms the bacterium uses to produce different diseases. We anticipate, therefore, that this work will define new targets for development of therapeutic agents and vaccines.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Project (R01)
Project #
5R01AI020723-25
Application #
7847620
Study Section
Special Emphasis Panel (ZRG1-IDM-H (02))
Program Officer
GU, Xin-Xing
Project Start
1984-06-01
Project End
2011-07-31
Budget Start
2010-05-01
Budget End
2011-07-31
Support Year
25
Fiscal Year
2010
Total Cost
$482,503
Indirect Cost
Name
Emory University
Department
Microbiology/Immun/Virology
Type
Schools of Medicine
DUNS #
066469933
City
Atlanta
State
GA
Country
United States
Zip Code
30322
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Bugrysheva, Julia; Froehlich, Barbara J; Freiberg, Jeffrey A et al. (2011) Serine/threonine protein kinase Stk is required for virulence, stress response, and penicillin tolerance in Streptococcus pyogenes. Infect Immun 79:4201-9
Topp, Shana; Reynoso, Colleen M K; Seeliger, Jessica C et al. (2010) Synthetic riboswitches that induce gene expression in diverse bacterial species. Appl Environ Microbiol 76:7881-4
Churchward, Gordon; Bates, Christopher; Gusa, Asiya A et al. (2009) Regulation of streptokinase expression by CovR/S in Streptococcus pyogenes: CovR acts through a single high-affinity binding site. Microbiology 155:566-75
Froehlich, Barbara J; Bates, Christopher; Scott, June R (2009) Streptococcus pyogenes CovRS mediates growth in iron starvation and in the presence of the human cationic antimicrobial peptide LL-37. J Bacteriol 191:673-7
Barnett, Timothy C; Bugrysheva, Julia V; Scott, June R (2007) Role of mRNA stability in growth phase regulation of gene expression in the group A streptococcus. J Bacteriol 189:1866-73
Dalton, Tracy L; Collins, Julie T; Barnett, Timothy C et al. (2006) RscA, a member of the MDR1 family of transporters, is repressed by CovR and required for growth of Streptococcus pyogenes under heat stress. J Bacteriol 188:77-85