Abstract
We analyzed variability in outer surface protein B (OspB) from Borrelia burgdorferi (Bb), the causative agent of Lyme disease, to determine how Bb escapes immune destruction. We have shown that vaccination with OspB from Bb strain B31 protected mice from infection with Bb B31 but not against Bb N40. The present study demonstrates that Bb N40 spirochetes which evade vaccination immunity to OspB have a truncated form of OspB, due to a TAA stop codon at nucleotide 577. In contrast, Bb N40 spirochetes that express full-length OspB are unable to infect mice immunized with OspB, analogous to our previous studies with Bb B31. Mapping of the OspB antibody response shows that epitopes in the C terminus of OspB are surface-exposed and bind protective monoclonal and polyclonal antibodies. This suggests that the C terminus of OspB is important for eliciting a protective immune response to OspB. Truncation or modification of outer surface proteins that do not bind protective antibody may be a means by which Bb evades host defenses.
MeSH Terms
Amino Acid Sequence
Animals
Antibodies
Antibodies, Monoclonal
Antigens, Bacterial
Antigens, Surface/biosynthesis,genetics,immunology
Bacterial Outer Membrane Proteins/biosynthesis,genetics,immunology
Base Sequence
Borrelia burgdorferi Group/genetics,immunology
Cloning, Molecular
Codon/genetics
Epitopes/analysis
Escherichia coli/genetics
Female
Fluorescent Antibody Technique
Genes, Bacterial
Humans
Lyme Disease/immunology,prevention & control
Mice
Mice, Inbred C3H
Polymerase Chain Reaction
Recombinant Fusion Proteins/immunology
Recombinant Proteins/biosynthesis,immunology
Restriction Mapping
Ticks/microbiology
Vaccines, Synthetic/immunology
Viral Vaccines/immunology
Chemicals
Antibodies
Antibodies, Monoclonal
Antigens, Bacterial
Antigens, Surface
Bacterial Outer Membrane Proteins
Codon
Epitopes
Recombinant Fusion Proteins
Recombinant Proteins
Vaccines, Synthetic
Viral Vaccines
OspB protein, Borrelia burgdorferi
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Fikrig E
Section of Immunobiology, Yale University School of Medicine, New Haven, CT 06510.
Tao H
Kantor F S
Barthold S W
Flavell R A
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