Contribution of fibronectin-binding protein to pathogenesis of Streptococcus suis serotype 2

A. de Greeff, H. Buys, R. Verhaar, J. Dijkstra, L. van Alphen, H.E. Smit

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Abstract

In the present study we investigated the role of the fibronectin (FN)- and fibrinogen (FGN)-binding protein (FBPS) in the pathogenesis of Streptococcus suis serotype 2 in piglets. The complete gene encoding FBPS from S. suis serotype 2 was cloned in Escherichia coli and sequenced. The occurrence of the gene in various serotypes was analyzed by hybridization studies. The FBPS protein was expressed in E. coli and purified, and binding to human FN and FGN was demonstrated. The induction of antibodies in piglets was studied upon infection. An isogenic mutant unable to produce FBPS was constructed, and the levels of virulence of the wild-type and mutant strains were compared in a competitive infection model in young piglets. Organ cultures showed that FBPS was not required for colonization of the tonsils but that FBPS played a role in the colonization of the specific organs involved in an S. suis infection. Therefore, the FBPS mutant was considered as an attenuated mutant.
Original languageEnglish
Pages (from-to)1319-1325
JournalInfection and Immunity
Volume70
Issue number3
DOIs
Publication statusPublished - 2002

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Streptococcus suis
Fibronectins
Carrier Proteins
Fibrinogen
Infection
Escherichia coli
Palatine Tonsil
Organ Culture Techniques
Genes
Virulence
Antibodies
Serogroup
Proteins

Cite this

de Greeff, A. ; Buys, H. ; Verhaar, R. ; Dijkstra, J. ; van Alphen, L. ; Smit, H.E. / Contribution of fibronectin-binding protein to pathogenesis of Streptococcus suis serotype 2. In: Infection and Immunity. 2002 ; Vol. 70, No. 3. pp. 1319-1325.
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abstract = "In the present study we investigated the role of the fibronectin (FN)- and fibrinogen (FGN)-binding protein (FBPS) in the pathogenesis of Streptococcus suis serotype 2 in piglets. The complete gene encoding FBPS from S. suis serotype 2 was cloned in Escherichia coli and sequenced. The occurrence of the gene in various serotypes was analyzed by hybridization studies. The FBPS protein was expressed in E. coli and purified, and binding to human FN and FGN was demonstrated. The induction of antibodies in piglets was studied upon infection. An isogenic mutant unable to produce FBPS was constructed, and the levels of virulence of the wild-type and mutant strains were compared in a competitive infection model in young piglets. Organ cultures showed that FBPS was not required for colonization of the tonsils but that FBPS played a role in the colonization of the specific organs involved in an S. suis infection. Therefore, the FBPS mutant was considered as an attenuated mutant.",
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Contribution of fibronectin-binding protein to pathogenesis of Streptococcus suis serotype 2. / de Greeff, A.; Buys, H.; Verhaar, R.; Dijkstra, J.; van Alphen, L.; Smit, H.E.

In: Infection and Immunity, Vol. 70, No. 3, 2002, p. 1319-1325.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Contribution of fibronectin-binding protein to pathogenesis of Streptococcus suis serotype 2

AU - de Greeff, A.

AU - Buys, H.

AU - Verhaar, R.

AU - Dijkstra, J.

AU - van Alphen, L.

AU - Smit, H.E.

PY - 2002

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AB - In the present study we investigated the role of the fibronectin (FN)- and fibrinogen (FGN)-binding protein (FBPS) in the pathogenesis of Streptococcus suis serotype 2 in piglets. The complete gene encoding FBPS from S. suis serotype 2 was cloned in Escherichia coli and sequenced. The occurrence of the gene in various serotypes was analyzed by hybridization studies. The FBPS protein was expressed in E. coli and purified, and binding to human FN and FGN was demonstrated. The induction of antibodies in piglets was studied upon infection. An isogenic mutant unable to produce FBPS was constructed, and the levels of virulence of the wild-type and mutant strains were compared in a competitive infection model in young piglets. Organ cultures showed that FBPS was not required for colonization of the tonsils but that FBPS played a role in the colonization of the specific organs involved in an S. suis infection. Therefore, the FBPS mutant was considered as an attenuated mutant.

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DO - 10.1128/IAI.70.3.1319-1325.2002

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