Francisella tularensis, a potential bioterrorism agent, is transmitted by arthropod vectors and causes tularemia in many mammals, including humans. Francisella novicida causes disease with similar pathology in mice. We show that F. novicida invades hemocyte-like cells of the Sua1B cell line derived from Anopheles gambiae and replicates vigorously within these cells. We used transposon knockouts of single genes of F. novicida to show that bacterial growth within these insect cells is dependent on virulence factors encoded in a bacterial pathogenicity island that has been linked to replication in mammalian macrophages. The virulence factors MglA, IglA, IglB, IglC, and IglD as well as PdpA and PdpB were necessary for efficient growth in insect cells, but PdpC and PdpD were not required. The Sua1B cell line presents a valuable model to study the interactions between this important pathogen and insect vectors.
How to translate text using browser tools
1 November 2008
Francisella Genes Required for Replication in Mosquito Cells
Amanda Read,
Sigrid J. Vogl,
Karsten Hueffer,
Larry A. Gallagher,
George M. Happ
ACCESS THE FULL ARTICLE
It is not available for individual sale.
This article is only available to subscribers.
It is not available for individual sale.
It is not available for individual sale.
Journal of Medical Entomology
Vol. 45 • No. 6
November 2008
Vol. 45 • No. 6
November 2008
Francisella
mosquito hemocyte-like cells
pathogenicity
vector biology
virulence factor