title: BBA52 facilitates Borrelia burgdorferi transmission from feeding ticks to murine hosts.
abstract: Borrelia burgdorferi, the pathogen of Lyme borreliosis, persists in nature through a tick-rodent transmission cycle. A selective assessment of the microbial transcriptome, limited to gene-encoding putative membrane proteins, reveals that bba52 transcription in vivo is strictly confined to the vector-specific portion of the microbial life cycle, with the highest levels of expression noted in feeding ticks and with swift down-regulation noted in mice. bba52 deletion did not affect murine disease as assessed by the genesis of arthritis and carditis or long-term persistence of pathogens in mice or ticks. However, bba52 deficiency did impair microbial transitions between hosts and vector, defects that could be fully rescued when bba52 expression was genetically restored to the original genomic locus. These studies establish that BBA52 facilitates vector-host transitions by the pathogen and therefore is a potential antigenic target for interference with transmission of B. burgdorferi from ticks to mammalian hosts.
authors.affiliation: Department of Veterinary Medicine, University of Maryland, and Virginia-Maryland Regional College of Veterinary Medicine, College Park, Maryland 20742, USA.
authors.forename: Manish
authors.initials: M
authors.lastname: Kumar
authors.forename: Xiuli
authors.initials: X
authors.lastname: Yang
authors.forename: Adam S
authors.initials: AS
authors.lastname: Coleman
authors.forename: Utpal
authors.initials: U
authors.lastname: Pal
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000235:genetics / Q000378:metabolism; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics / Q000378:metabolism; D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D001899:Borrelia Infections / Q000235:genetics / Q000382:microbiology / Q000635:transmission*; D025065:Borrelia burgdorferi / Q000235:genetics*; D005260:Female; D054884:Host-Pathogen Interactions / Q000235:genetics; D007303:Insect Vectors / Q000382:microbiology; D018884:Ixodes / Q000382:microbiology*; D051379:Mice; D009154:Mutation; D015854:Up-Regulation
chemical_list: D000942:Antigens, Bacterial; D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins