The Lyme disease vaccine candidate outer surface protein A (OspA) in a formulation compatible with human use protects mice against natural tick transmission of B. burgdorferi.
Development of a vaccine for the Lyme disease spirochete, Borrelia burgdorferi, has focused on the bacterial lipoprotein, major outer surface protein A (OspA). With few exceptions, testing of OspA vaccines in animal models has involved challenge with needle inoculation of cultured spirochetes. Recombinant OspA proteins from two OspA divergent strains of B. burgdorferi were tested for their vaccine potential in three different strains of mice challenged with laboratory reared ticks with a high rate of B. burgdorferi infection. All formulations of the B. burgdorferi sensu stricto derived OspA vaccine protected all strains of mice when challenged by ticks infected with an OspA homologous strain of the spirochete, whereas heterologous OspA from B. afzelii did not protect. Furthermore, ticks feeding on protected mice had reduced OspA levels compared to unvaccinated controls.
Golde
W T
WT
Division of Vector-Borne Infectious Diseases, Centers for Disease Control and Prevention, US Public Health Service, Department of Health and Human Services, Fort Collins, CO 80522, USA.
Burkot
T R
TR
Piesman
J
J
Dolan
M C
MC
Capiau
C
C
Hauser
P
P
Dequesne
G
G
Lobet
Y
Y
D000818:Animals; D000917:Antibody Formation; D000954:Antigens, Surface / Q000235:genetics / Q000276:immunology*; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics / Q000276:immunology*; D001428:Bacterial Vaccines; D015748:Borrelia burgdorferi Group / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D008074:Lipoproteins; D008193:Lyme Disease / Q000276:immunology / Q000517:prevention & control* / Q000635:transmission*; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D013987:Ticks; D014614:Vaccines, Synthetic / Q000235:genetics / Q000276:immunology*
D000954:Antigens, Surface; D001425:Bacterial Outer Membrane Proteins; D001428:Bacterial Vaccines; D008074:Lipoproteins; C072045:OspA protein; D014614:Vaccines, Synthetic