Title
Ectopic expression of the flagellar regulon alters development of the Bordetella-host interaction
UMMS Affiliation
Department of Molecular Genetics and Microbiology
Publication Date
1995-02-24
Document Type
Article
Subjects
Animals; Bacterial Proteins; Base Sequence; Bordetella bronchiseptica; development; Cell Movement; Flagella; *Gene Expression Regulation, Bacterial; Genes, Bacterial; Genes, Regulator; Models, Genetic; Molecular Sequence Data; Rats; Rats, Wistar; Regulon; *Signal Transduction; Trachea; Transcription Factors; Transcription, Genetic; Transcriptional Activation; Virulence
Disciplines
Microbiology | Molecular Genetics
Abstract
Signal transduction molecules within the two-component family represent a conserved adaptation for the control of genes involved in pathogenesis. The Bordetella virulence control locus, bvgAS, activates and represses gene expression in response to environmental signals. While infection requires virulence gene activation, the role of gene repression during infection is not understood. By altering regulatory genes and reversing regulatory connections, we found evidence that the BvgAS-repressed genes responsible for motility are neither required nor expressed during colonization of the host. Expression of this Bvg- phase-specific phenotype in the Bvg+ growth phase resulted in a defect in tracheal colonization. Therefore, BvgAS promotes virulence both by activating genes required for colonization and by repressing genes that inhibit the development of infection.
Source
Cell. 1995 Feb 24;80(4):611-20.
Journal/Book/Conference Title
Cell
Related Resources
Repository Citation
Akerley, Brian J.; Cotter, Peggy A.; and Miller, Jeff F., "Ectopic expression of the flagellar regulon alters development of the Bordetella-host interaction" (1995). Molecular Genetics and Microbiology Publications and Presentations. 6.
https://escholarship.umassmed.edu/mgm_pp/6