Ses proteins as possible targets for vaccine development against Staphylococcus epidermidis infections

The Journal of Infection
Dorien HofmansLieve Van Mellaert

Abstract

The opportunistic pathogen Staphylococcus epidermidis is progressively involved in device-related infections. Since these infections involve biofilm formation, antibiotics are not effective. Conversely, a vaccine can be advantageous to prevent these infections. In view of vaccine development, predicted surface proteins were evaluated on their potential as a vaccine target. Immunoglobulins directed against S. epidermidis surface proteins SesB, M, O, Q and R were used to firstly affirm their surface location. Further, inhibitory effects of these IgGs on biofilm formation were determined in vitro on polystyrene and polyurethane surfaces and in vivo using a subcutaneous catheter mouse model. We also examined the opsonophagocytotic capacity of these IgGs. Surface localization of the five Ses proteins was demonstrated both for planktonic and sessile cells, though to a variable extent. Ses-specific IgGs added to planktonic cells had a variable inhibitory effect on cell adhesion to polystyrene, while only anti-SesO IgGs decreased cell attachment to polyurethane catheters. Although phagocytic killing was only obtained after opsonization with SesB-specific IgGs, a significant reduction of in vivo formed biofilms was observed after admini...Continue Reading

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Citations

Oct 24, 2019·Molecular Biology Reports·Silvestre Ortega-PeñaJuan C Cancino-Diaz
Feb 15, 2020·Expert Review of Anti-infective Therapy·Karsten BeckerHolger Rohde
Jun 6, 2020·Human Vaccines & Immunotherapeutics·Bahman MirzaeiSina Valinejad

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