The Brucella abortus Cu,Zn superoxide dismutase is required for optimal resistance to oxidative killing by murine macrophages and wild-type virulence in experimentally infected mice.

The manganese transporter MntH is a critical virulence determinant for Brucella abortus 2308 in experimentally infected mice.

The gene designated BAB1_1460 in the Brucella abortus 2308 genome sequence is predicted to encode the manganese transporter MntH. Phenotypic analysis of an isogenic mntH mutant indicates that MntH is the sole high-affinity manganese transporter in this bacterium but that MntH does not play a detectable role in the transport of Fe(2+), Zn(2+), Co(2+), or Ni(2+). Consistent with the apparent sele...

Cu,Zn superoxide dismutase of Mycobacterium tuberculosis contributes to survival in activated macrophages that are generating an oxidative burst.

Macrophages produce reactive oxygen species and reactive nitrogen species that have potent antimicrobial activity. Resistance to killing by macrophages is critical to the virulence of Mycobacterium tuberculosis. M. tuberculosis has two genes encoding superoxide dismutase proteins, sodA and sodC. SodC is a Cu,Zn superoxide dismutase responsible for only a minor portion of the superoxide dismutas...

An RNA vaccine based on recombinant Semliki Forest virus particles expressing the Cu,Zn superoxide dismutase protein of Brucella abortus induces protective immunity in BALB/c mice.

We constructed infectious but replication-deficient Semliki Forest virus (SFV) particles carrying recombinant RNA encoding Brucella abortus Cu,Zn superoxide dismutase (SOD). The recombinant SFV particles (SFV-SOD particles) were then evaluated for their ability to induce a T-cell immune response and to protect BALB/c mice against a challenge with B. abortus 2308. Intraperitoneal injection of mi...

Immunity in BALB/c Mice Induces Protective Brucella abortus the Cu,Zn Superoxide Dismutase Protein of Semliki Forest Virus Particles Expressing An RNA Vaccine Based on Recombinant

Brucella abortus HtrA functions as an authentic stress response protease but is not required for wild-type virulence in BALB/c mice.

A second mutation has recently been identified in the previously described Brucella abortus htrA mutant PHE1. As a result of this finding, a new B. abortus htrA mutant, designated RWP11, was constructed to evaluate the biological function of the Brucella HtrA protease. RWP11 is more sensitive to oxidative killing in vitro and less resistant to killing by cultured murine neutrophils and macropha...