Human monoclonal antibodies against Staphylococcus aureus surface antigens recognize in vitro and in vivo biofilm.
Elife
; 112022 01 06.
Article
in En
| MEDLINE
| ID: mdl-34989676
ABSTRACT
Implant-associated Staphylococcus aureus infections are difficult to treat because of biofilm formation. Bacteria in a biofilm are often insensitive to antibiotics and host immunity. Monoclonal antibodies (mAbs) could provide an alternative approach to improve the diagnosis and potential treatment of biofilm-related infections. Here, we show that mAbs targeting common surface components of S. aureus can recognize clinically relevant biofilm types. The mAbs were also shown to bind a collection of clinical isolates derived from different biofilm-associated infections (endocarditis, prosthetic joint, catheter). We identify two groups of antibodies one group that uniquely binds S. aureus in biofilm state and one that recognizes S. aureus in both biofilm and planktonic state. Furthermore, we show that a mAb recognizing wall teichoic acid (clone 4497) specifically localizes to a subcutaneously implanted pre-colonized catheter in mice. In conclusion, we demonstrate the capacity of several human mAbs to detect S. aureus biofilms in vitro and in vivo.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Staphylococcus aureus
/
Biofilms
/
Antibodies, Monoclonal
Limits:
Animals
/
Humans
/
Male
Language:
En
Journal:
Elife
Year:
2022
Document type:
Article
Affiliation country: