| Literature DB >> 11705940 |
S M Julio1, D M Heithoff, D Provenzano, K E Klose, R L Sinsheimer, D A Low, M J Mahan.
Abstract
Salmonella strains that lack or overproduce DNA adenine methylase (Dam) elicit a protective immune response to different Salmonella species. To generate vaccines against other bacterial pathogens, the dam genes of Yersinia pseudotuberculosis and Vibrio cholerae were disrupted but found to be essential for viability. Overproduction of Dam significantly attenuated the virulence of these two pathogens, leading to, in Yersinia, the ectopic secretion of virulence proteins (Yersinia outer proteins) and a fully protective immune response in vaccinated hosts. Dysregulation of Dam activity may provide a means for the development of vaccines against varied bacterial pathogens.Entities:
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Year: 2001 PMID: 11705940 PMCID: PMC98854 DOI: 10.1128/IAI.69.12.7610-7615.2001
Source DB: PubMed Journal: Infect Immun ISSN: 0019-9567 Impact factor: 3.441