Fibronectin-binding activity in Borrelia burgdorferi

Dennis J. Grab, Christina Givens, Richard Kennedy

Research output: Contribution to journalArticlepeer-review

Abstract

Recently, the term MSCRAMM (microbial surface components recognizing adhesive matrix molecules), has been introduced to describe microbial molecules that recognize extracellular matrix (ECM) [1]. Here we present evidence for the presence of fibronectin-binding molecules in Borrelia burgdorferi and several other Borrelia species. Immunofluorescence studies show that plasma fibronectin is bound uniformly over the cell surface of free swimming B. burgdorferi. In addition, the spirochetes are able to bind to plasma fibronectin-coated microwell plates, an interaction that is inhibited by anti-fibronectin antibody as well as exogenous plasma fibronectin. Taken together, the data suggest that fibronectin binds to the surface of the spirochete. On Western blot-like assays, B. burgdorferi and some B. afzelii strains express a major fibronectin-binding protein (Fn-BA) with an approximate molecular mass of 52 kDa. In addition, several other major Fn-BAs were found in B. hermsii (26, 31, 33, 39, 46, 54 and 58 kDa) and B. turicatae (39, 41, 45, 50, 56, 59 and 66 kDa). Preliminary evidence suggests that fibronectin (and Fn-BA) may play a role as a molecular bridge between the spirochete and other components of the extracellular matrix. Copyright (C) 1998 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)135-145
Number of pages11
JournalBiochimica et Biophysica Acta - Molecular Basis of Disease
Volume1407
Issue number2
DOIs
StatePublished - Aug 14 1998
Externally publishedYes

Keywords

  • Borrelia afzelii
  • Borrelia burgdorferi
  • Borrelia garinii
  • Borrelia hermsii
  • Borrelia turicatae
  • Collagen
  • Extracellular matrix
  • Fibronectin
  • Microbial surface components recognizing adhesive matrix molecule

ASJC Scopus subject areas

  • Molecular Biology
  • Molecular Medicine
  • Biophysics

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