Title: Inhibition of Staphylococcus epidermidis biofilm formation by rabbit polyclonal antibodies against the SesC protein
Authors: Shahrooei, Mohammad ×
Hira, Vishal
Stijlemans, Benoit
Merckx, Rita
Hermans, Peter W M
Van Eldere, Johan #
Issue Date: Sep-2009
Publisher: American Society for Microbiology (ASM)
Series Title: Infection and Immunity vol:77 issue:9 pages:3670-3678
Abstract: Several well-studied proteins with defined roles in Staphylococcus epidermidis biofilm formation are LPXTG motif-containing proteins. Here, we investigate the possible use of the LPXTG motif-containing protein SesC (S. epidermidis surface protein C; accession no. NP_765787) as a target for antibodies to prevent biofilm formation. In vitro and in a in vivo rat model of catheter infection, gene and protein expression analysis showed that SesC is expressed more strongly in biofilm-associated cells than in planktonic cells and is expressed particularly during the late phase of in vivo biofilm formation. Polyclonal rabbit antibodies raised against SesC reduced the fibrinogen-binding ability of S. epidermidis RP62A and Staphylococcus aureus RN4220 transformants expressing SesC, inhibited in vitro biofilm formation by S. epidermidis strains 10b and 1457, and significantly reduced the numbers of bacteria in a 1-day-old in vivo biofilm (P < 0.001, one-way analysis of variance). Our findings revealed that SesC is a promising target for prevention and treatment of S. epidermidis biofilms because it affects both the primary attachment and biofilm accumulation phases. The precise role of SesC in biofilm formation remains to be identified.
ISSN: 0019-9567
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory for Experimental and Clinical Microbiology (-)
Laboratory of Clinical Bacteriology and Mycology
× corresponding author
# (joint) last author

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